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Download General Specification for Digital Protective Relay of MV Switchgear
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Specification for Tender Document1 General Specification for Digital Protective Relay of MV Switchgear This specification defines: Requirements for the Manufacturer Basic requirements for the Digital Protective Relay Digital Protective Relay functional description Tender documents Testing, commissioning, maintenance requirements Last update : 2017-05-06 -1- Specification for Tender Document1 Table of contents: 1. General …………………………………………………………………………………......... p. 3 2. Requirements for the manufacturer ……………………………………………………….. p. 3 2.1 Certifications……………………………………………………………………………........ p. 3 2.2 Experience………………………………………………………………………….……....... p. 3 2.3 Local support…………………………………………………………………........................ p. 3 3. Basic requirements for the Digital Protective Relay………………………......................... p. 4 3.1 General requirements ………………………………………………………………….......... p. 4 - 5 3.2 General Digital Protective Relay design requirements ………………………....................... p. 5 - 6 3.3 Digital Protective Relay general and practical operating requirements…………..... ………. p. 7 3.4 Digital Protective Relay installation rules and requirements ……………….......................... p. 7 - 8 4. Digital Protective Relay description ………………………………...................................... p. 8 4.1 Protection……………………………………………………................................................. p. 8 - 9 4.2 Control and Monitoring…………………………………………………………................... p. 9 4.3 Metering…………………………………………………………........................................... p. 10 4.4 Network, Machine and Switch gear diagnosis…………………………………………….... p. 10 - 11 4.5 Relay diagnosis ………………………………………………............................................... p. 12 4.6 Programming and configuration software …………………………………………............... p. 12 4.7 User Machine Interface…………………………………....................................................... p. 13 4.8 Communication …………………………………………………………………................... p. 13 - 14 4.9 Digital Protective Relay hardware architecture platform………………………………....... p. 15 5. Tender documents ……………………………………………………………………........... p. 15 6. Protection relay testing , commissioning and maintenance …………………………........ p. 15 6.1 Testing ……………………………………………………………………………………..... p. 15 6.2 Commissioning tests ………………………………………………….....................……...... p. 15 6.3 Maintenance………………………………………………………….................................... p. 16 7. Annexes ……………………………………………………………………………………..... p. 17 7.1 Annex A1……………………………………………………………………………….…..... p. 18 7.2 Annex A2………………………………………………………............................................. p. 19 7.3 Annex A3………………………………………………………………….............................. p. 20 7.4 Annex A4…………………………………………………………………............................. p. 19 7.5 Annex A5………………………………………………………………….............................. p. 21 7.6 Annex A6………………………………………………………………….............................. p. 22 7.7 Annnex A7…………………………………………………………………............................ p. 23 Last update : 2017-05-06 -2- Specification for Tender Document1 1. General This part of the specification describes the general requirements for a Digital Protective Relay, to comply with National, IEC, EN, CSA and NEMA standards and for use in the low voltage compartment of a Medium Voltage switch gear cubicle or a in separate control panel. It also defines Low, Mid and High-end solutions to protect the following Medium Voltage Low, Mid, High power applications: 1.1 Substation (feeder or incomer type) 1.2 Transformer 1.3 Motor 1.4 Generator 1.5 Busbar 1.6 Capacitor bank 2. Requirements for the manufacturer 2.1 Certifications The Digital Relay manufacturer shall have a valid ISO 9001 (2000 version) certification and an applicable Quality Assurance and Quality Control system. The Digital Relay manufacturer shall have the Environment Certification ISO 14001 and shall be able to supply the Product Environmental Profile (P.E.P) on the engineer’s request. 2.2 Experience The Digital relay manufacturer shall have a long term experience in designing and manufacturing Digital Protective Relays linked to switchgear applications and have relevant business volume and references in order to provide credibility in his commitments and a long term support capability. 2.3 Local support The manufacturer/supplier shall have a permanent representative office with a trained and skilled support staff, in the country or in the region where the Digital Relays are delivered, in order to prove his commitment for local or regional support and to provide a channel for communication. The local or regional support team shall be easily reached and shall be able to arrive on site whenever accessible within (x x) hour’s notice. The engineers employed by the supplier’s local or regional office shall be certified by the manufacturer and provide start-up service including physical inspection of the Digital Relay, connected wiring and final adjustment, to ensure that the Digital Relay meets the required performance. The manufacturer shall be able to offer commissioning of the Digital relay to be carried out by the local or regional office. The most common spare parts shall be available within (x x) Hours/days from the notification through the local or regional service centre of the supplier. Last update : 2017-05-06 -3- Specification for Tender Document1 3. Basic requirements for the Digital Protective Relay 3.1 General requirements The Digital Protective Relay shall comply with the most relevant national, international standards and recommendations for industrial electrical distribution (IEC, EN, UL, CSA) as per table (1) Digital Protective Relay Standards - Table 1 Requirements Protection relays Electro Magnetic Emission tests Compatibility (EMC) Disturbing field emission Conducted field emission Immunity tests Radiated disturbances – radiated fields – electrostatic discharge – to power magnetic fields at network frequency Conducted disturbances – RF disturbances – fast transient bursts – damped oscillating waves – Oscillatory wave imunity Environmental Mechanical constraints Safety – surges – voltage interruptions In operation – vibrations – shocks – earthquakes De-energised – vibrations – shocks – jolts Enclosure tests – Mechanical protection degree – Fire withstand Electrical tests – earth continuity – 1.2/50µs impulse wave – dielectric at network frequency Last update : 2017-05-06 Standards IEC 60255 Level IEC 60255-25 EN 55022 IEC 60255-25/EN 55022 A IEC 60255-22-3 IEC 61000-4-3 ANSI C37.90.2 IEC 60255-22-2, ANSI C37.90.3 IEC 61000-4-8 III 4 IEC 60255-22-6 IEC 60255-22-4 IEC 61000-4-4 ANSI C37.90.1 IEC 60255-22-1, ANSI C37.90.1, IEC 61000-4-18 EN 61000-4-12 III A and B IV IEC 61000-4-5 IEC 60255-11 III IEC 60255-21-1 IEC 61000-2-6 IEC 60255-21-2 IEC 60255-21-3 2 Fc 2 2 IEC 60255-21-2 IEC 60255-21-2 IEC 60255-21-2 2 2 2 IEC 60529 NEMA IEC 60695-2-11 IP52 Type 12 IEC 61131-2 IEC 60255-5 IEC60255-5, ANSI C37.90 -4- Specification for Tender Climatic conditions Certification (*) Document1 In operation – to cold – to dry heat – to damp heat – salt mist – corrosion influence/Gas test In storage – temperature variation – to cold – to dry heat – to damp heat CE UL CSA GOST Low Voltage electrical installations Functional Safety of electronic safety related systems Communication IEC 61068-2-1 IEC 61068-2-2 IEC 61068-2-78 IEC 61068-2-52 IEC 61068-2-60 Ad Bd Cab Kb/2 IEC 61068-2-14 IEC 61068-2-1 IEC 61068-2-2 IEC 61068-2-78 IEC 61068-2-30 EN 50263 harmonised standard European directive UL508 CSA C22.2 Nb Ab Bb Cab Db IEC 60364 IEC61508 Data transmission industrial protocol: Modbus RTU Between protective relay and control system inside a power station For power substation automation inside the substation IEC 61158 Field Bus foundation IEC 870-5 series and IEC 870-5-103 – DNP3 IEC 61850 Ed.1-and 2 (*) The Digital Protective Relay shall be CE marked, conforming to European Low Voltage (73/23 EEC and 93/68 EEC) and EMC (89/336/EEC) Directives, UL/CSA marked according to UL 508C and shall have GOST marking for Russia and Eastern Europe. 3.2 General Digital Protective Relay design requirements 3.2.1 Technology and Functionality: The Digital Protective Relay design shall be based on a microprocessor technology and shall accommodate a hardware and software architecture consisting of a multifunction protection and control platform with logic/analogue inputs and outputs, including Protections, Metering, Control and Monitoring, User Machine Interface with alphanumeric display, Communication Interface, Network, Machine, Switch gear and relay diagnosis functionalities. 3.2.2 Safety and Dependability (Functional Safety) The Digital Protective Relay design shall be part of a safety and dependability design process of the manufacturer, associating the four R.A.M.S parameters: 3.2.2.1 Reliability: To define a predictive calculated and field measured MTTF, determine a Failure Rate and a useful life Last update : 2017-05-06 -5- Specification for Tender Document1 time of the digital relay. 3.2.2.2 Availability: To prevent any nuisance or unwanted tripping by selecting the adequate settings and improve the continuity of service. 3.2.2.3 Maintainability: To define the Time to repair and spare part requirements in the maintenance process. 3.2.2.4 Safety: To increase the level of protection safety without lowering the process availability according to IEC 61508 requirements and determine a S.I.L (Safety Integrity Level) capability, a P.F.D ( Probability of Failure on Demand) and a S.F.F (Safe Failure Fraction) measuring the percentage of failures seen by the Watchdog leading to a safe position. The Digital Protective Relay shall therefore be fitted with an internal self-test monitoring system (“Watchdog”) testing the relay power supply, the acquisition of current and voltages signals, the processing unit (memories, processor(s)), software/hardware watchdog, logic inputs/outputs. In case of an internal failure making the relay inoperant, the relay shall be set in fail-safe position leading to a fall-back position and shall not trip the circuit breaker equipped with shunt trip coil (e.g: loss of internal or external power supply). All the relays outputs and logic inputs shall be locked in deactivated position. The watchdog function shall be able to activate a vertical back-up protection architecture based on an upstream protective relay rescuing a downstream defective relay. Any minor safe internal failure shall enable the relay to normally perform its protection functions in a downgrading mode. 3.2.3 Programming and Configuration The Digital Protective Relay shall be programmable and configurable with appropriate user-friendly setting software using a MS Windows program running on a standard PC. The programming and configuration shall be carried out locally (front access) through a RS 232 port or remotely through a communication network, mainly an Engineering LAN (E-LAN) with adequate passwords to prevent any illegal intrusion. Programming and configuration shall also be able to be prepared on a PC file directly (unconnected mode) and down-loaded locally or remotely into the relay according to relevant protocol used. 3.2.4 Hardware and Software architecture The hardware and software architecture shall be modular and disconnectable to adapt the protection and control unit to the required level of complexity of the MV applications. The architecture shall allow future extensions by simple and easy hardware and firmware upgrading of the protection and control unit and shall be designed to enable upward compatibility between Digital Protective Relay of different generations of the manufacturer. The architecture shall provide easy cost efficient maintenance operations when changing modules. The Protective Digital relay shall accommodate digital and isolated inputs/outputs. The inputs shall be used to monitor the status of the complete MV panel as well as receive external signal (e.g: Buchholz, inter-trip, etc,) while the outputs shall be used for circuit breaker or contactor control, inter-tripping between panels and remote alarms. Last update : 2017-05-06 -6- Specification for Tender Document1 3.3 Digital Protective Relay general and practical operating requirements The Protective Digital Relay shall operate according to the following conditions: Temperature: External auxiliary power supply: - For Low and Mid-end solutions/ applications - For High-end solutions/applications: Current sensors: Voltage sensors: - 25°C to +70°C From AC/AC UPS system or dual battery charger 24V-250V DC and 110V-240V AC (50Hz/60Hz) 24V-250V DC In/1A or In/5A current transformers, LPCT( Low Power Current Transformer) , Core Balance CT’s or interposing ring CT From 90V up to 230V with 1V step 3.3.1 The circuit breaker control output relay contact shall be capable of withstanding a 30A DC current for 0.2seconds and 2000 operating cycles according to ANSI C37.90-clause 6.7. 3.3.2 Other logic output relay contacts shall be capable of withstanding a 8A DC/AC steady state current 3.3.3 Logic input pilot voltage shall be rated as per the auxiliary power supply of external driven digital signals from the control system (RTU or PLC) and shall comply with IEC 60011-32. 3.3.4 Current carrying terminal from current sensors shall be automatically short circuited when withdrawing current sensor modules. 3.3.5 Provisions shall be made in the switch gear cubicle for testing and calibrating the relay by current injection using an external source, without disconnecting the permanent wiring. 3.3.6 CT/VT and Trip coil supervision facilities shall be provided to check the wiring circuit continuity with relevant alarms and messages. 3.3.7 The Digital Protective Relay shall be continuously rated and shall maintain the setting accuracy without setting drift over time and full range of auxiliary voltage variations as per the requisition. 3.3.8 The Digital Protective Relay shall be capable of withstanding the output current of the associated current transformers corresponding to a primary current equal to the specified short circuit withstand current and time of the assembly ( 4 In permanent, 100 In 1 second). 3.3.9 The Digital Protective Relay shall have a constant 150 year minimum design MTTF during its useful life time which shall not be less than 15 years in proper temperature and environmental operating conditions. 3.3.10 Any component substitution because of component obsolescence shall not affect the upward compatibility between relays on duty 3.4 Digital Protective Relay installation rules and requirements The Digital Protective Relay shall be able to be flush mounted or mounted inside the Low Voltage compartment and shall have an IP52 mechanical protection degree according to IEC 60529. To operate properly and to achieve satisfactory operating quality, the Digital Protective Relay shall be installed so that it shall be protected against EMC, and the following points shall be required: Last update : 2017-05-06 -7- Specification for Tender Document1 3.4.1 A single equipotential earth system used as the site potential reference 3.4.2 A power distribution with TN-S earthing system 3.4.3 Separation of different kinds of cables (power, power supply, auxiliary, data, measures) 3.4.4 Use of equipotential metallic structure for cable trays 3.4.5 Use of screened cables for data and measure 3.4.6 A power supply protection (filtering, over voltage protection) 3.4.7 Equipment and installation protection against the indirect effects of lightning 4. Digital Protective Relay description 4.1 Protection The Digital Protective Relay shall integrate all the necessary ANSI code protections according to the different levels of applications (as per the protection selection guide in Annex A1, A2, A3, A4, A5, A6) and shall provide wide setting ranges mainly for current protections and a large choice of tripping curves through two setting groups (normal/back-up mode network) operated by logic input: 4.1.1 Definite Time (DT) curve 4.1.2 IDMT curves set by T time delay or TMS factor, including: - IEC curves (SIT, VIT/LTI, EIT) - IEEE curves (MI, VI, EI) - Usual curves (UIT, RI, IAC) 4.1.3 Customised tripping curve possibilities shall be available for specific Phase, Earth fault over current and directional Phase, Earth fault applications or revamping ANSI code 50/51(High-end solutions/applications) Tripping curve DT IDMT Threshold Tripping time delay Is set point 0,05 to 24 In 0,05 to 2,4In Inst: 0,05 sec to 300 sec 0,1 sec to 12,5 sec at 10 Is Inst: 0,05 sec to 300sec 0,1sec to 10 Is0 50N/51N (High-end solutions/applications) DT IDMT Is0 set point 0,01 to 15 In0 (min 0,1A) 0,1 to 1 In0 (min 0,1A) 50/51(Low, Mid-end solutions/applications) DT IDMT Is set point 0,1 to 24 In 0,1 to 2,4In 50N/51N(Low, Midend solutions /applications) DT IDMT Is0 set point 0,1 to 15 In0 0,1 to 1 In0 Inst: 0,05 sec to 300 sec 0,1 sec to 12,5 sec at 10 Is Inst: 0,05 sec to 300sec 0,1sec to 10 Is0 4.1.4 Overload protection shall be based on RMS current value (Minimum 13th Harmonic) and shall take the ambient temperature into account. 4.1.5 Phase over current and earth fault protection shall have an adjustable timer hold to allow re-striking fault detection. 4.1.6 Phase over current protection shall integrate an H2 Harmonic restraint for transformer start-up inrush current, to be activated or inhibited. 4.1.7 Earth fault protection shall integrate a H2 Harmonic restraint for: 4.1.7.1 Transformer start-up inrush current without circuit breaker tripping Last update : 2017-05-06 -8- Specification for Tender Document1 4.1.7.2 Cable arcing fault with circuit breaker tripping This protection shall be activated or inhibited 4.1.8 Differential protection shall integrate H2 and H5 Harmonic restraint to prevent a transformer nuisance tripping during the energising period and stability on external zone fault. 4.1.9 Alternative over current setting groups shall be selectable by logical conditions through logic inputs or communication facilities, to adapt a fast protection plan change as well as setting facilities for thresholds and time delay adjustment. 4.1.10 The Digital and protective Relay shall allow the use of upstream and logic discrimination in a cascading scheme or closed loop applications. 4.2 Control and Monitoring The Digital Protective Relay shall basically carry out all the ANSI code Control and Monitoring functions necessary to control the Circuit Breaker or Contactor for electrical operations. These operations shall be performed from pre-defined functions using logic inputs/outputs and shall be processed from internal and external data for: 4.2.1 Circuit breaker/Contactor control - ANSI 94/69 4.2.1.1 On/Off control whatever the type of tripping coil (shunt trip or under voltage release) 4.2.1.2 Inhibit tripping 4.2.1.3 Remote control 4.2.2 Latching /acknowledgement - ANSI 86 4.2.2.1 Latch individually all the tripping outputs and logic inputs 4.2.2.2 Used as “Lock-out relay” 4.2.3 Local annunciation - ANSI 30 4.2.3.1 LED indication (relay status) 4.2.3.2 Local annunciation on the relay display (events, alarms, messages) 4.2.3.3 Alarm processing 4.2.4 Logic discrimination - ANSI 68 4.2.4.1 Provide full tripping discrimination and faster tripping of circuit breakers close to the source in a cascading scheme 4.2.4.2 Send and receive blocking orders between Protective Digital Relays of the cascading scheme 4.2.5 Setting groups Switching (normal to back-up mode network) with logic input or communication facilities. 4.2.6 Output relay testing Each output relay shall be manually activated for 5 seconds to check output connections and connected switch gear operation 4.2.7 Automation functions Mid and High-end Digital Protective Relay shall be able to provide specific control and monitoring functions carried out with Logic Equations and/or Ladder Logic Last update : 2017-05-06 -9- Specification for Tender Document1 4.3 Metering The Digital Protective Relay shall include accurate measurement processing functions and shall display the metering data on the User Machine Interface to operate the different applications and carry out commissioning and maintenance as per the following table (2): Designation - Table 2- (*option) Low-end solutions / Applications Current or Voltage Phase current I1, I2, I3 RMS Demand current I1, I2, I3 Peak demand current IM1, IM2, IM3 Calculated residual current I0Σ Measured residual current I0 Voltage U21, U32, U13, V1, V2, V3 Positive sequence voltage Vd/rotation direction Negative sequence voltage Vi Frequency Measured residual voltage V0 Calculated residual voltage V0Σ Active power P, P1, P2, P3 Reactive power Q, Q1, Q2, Q3 Apparent power S, S1, S2, S3 Peak demand power PM, QM Power factor Calculated active and reactive energy(±Wh,±VAR) Active and reactive energy by pulse counting (±Wh,±VAR) Phase current I’1, I’2, I’3 RMS Calculated residual current I’0Σ Measured residual current I’0 Voltage U’21, U’32, U’13, V’1, V’2, V’3, V’d, V’i and frequency Calculated residual voltage V’0 Σ Measured residual voltage V’0 Temperature Rotation speed Neutral point voltage Vnt Phasor diagram Mid-end solutions/ Applications High-end solutions/ Applications * * 4.4 Network, Machine and Switch gear diagnosis The Digital Protective Relay shall provide diagnosis facilities for process management and maintenance purpose as per table (3) 4.4.1Network diagnosis The Digital Protective Relay shall provide network power quality metering functions and all data on detected network disturbances to record, for analysis purpose. 4.4.2 Machine diagnosis Last update : 2017-05-06 - 10 - Specification for Tender Document1 For maintenance purpose the Digital Protective Relay shall provide data on the operation of the machines , predicted data to optimise process management, useful data to facilitate protection functions and implementation 4.4.3 Switch gear diagnosis The Digital Protective Relay shall provide information on switch gear mechanical status for preventive and curative maintenance - Table 3 - (*option) Designation Low-end Mid-end High-end solutions / solutions/ solutions/ Applications Applications Applications Switch gear diagnosis CT/VT supervision – ANSI 60/60FL Trip circuit supervision – ANSI 74 Cumulative breaking current Number of operations, operating time, charging time, number of racking out operations Auxiliary power supply monitoring Network and Machine diagnosis Tripping context Tripping current Trip I1, I2, I3, I0 Unbalance ratio / negative sequence current Ii Disturbance recording Thermal capacity used Remaining operating time before overload tripping and waiting time after overload tripping Starting current and time Start inhibit time Number of starts before inhibition Phase displacement φ1, φ2, φ3, φ0, φ0Σ Running hours counter / operating time Unbalance ratio / negative sequence I’i Motor start report recording and trends * Parametrable data log function * Phase fault and earth fault trip counters * Harmonic distortion (THD), current and * voltage Ithd, Uthd Apparent positive sequence impedance Zd * Apparent phase-to-phase impedances Z21, * Z32, Z13 Difference in amplitude, frequency and phase * of voltages compared to for synchro-check Differential current I diff1, I diff2, Idiff3 Through current It1, It2, It3 Current displacement θ Third harmonic voltage, neutral point or residual Capacitor unbalance current and capacitance Last update : 2017-05-06 - 11 - Specification for Tender Document1 4.5 Relay diagnosis The Digital Protective Relay shall contain self-test diagnosis facilities to: 4.5.1 Detect internal relay failures that may cause nuisance tripping or failed fault tripping 4.5.2 Set the relay in fail-safe position leading to a fall-back position to avoid any unwanted tripping if a major internal failure is detected. A Watchdog relay with change over contact (NO+NC) shall provide an alarm or information to activate a back-up protection. Any minor failure shall not interrupt the protection function operations and the relay shall operate in downgraded mode 4.5.3 Inform for maintenance operation 4.5.4 Detect unplugged connectors resulting in a major internal failure 4.5.5 Check the hardware configuration The absence or failure of a remote module shall be considered as a minor failure The absence or failure of a Logic input/output module shall be considered as a major failure 4.6 Programming and configuration software The Digital Protection Relay shall use a user-friendly setting and operating multi-lingual software in Windows environment with menus and icons for fast direct access to the data required. Guided navigation to go through all the data on the same function together in the same screen and with a file management will be prefered. Printing report at each step of engineering for archiving (paper or electronic files) will be suitable: 4.6.1 Prior to commissioning and without connection to the relay (unconnected mode), to prepare the relay protection and parameter settings: – configure the relay and extension modules and entry of general settings – enable/disable functions and entry of general settings – adapt pre-defined control and monitoring functions – create specific mimic diagrams for local display 4.6.2 During commissioning , on a PC connected point-to-point to the front panel – access to all functions available in unconnected mode, after entering the protection settings or parameter setting password – transfer of the relay parameters and protection setting file, prepared in unconnected mode, protected by the parameter setting password – display of all the measurements and useful information during commissioning – display of logic inputs, logic outputs and LED status – test of logic inputs – display of automation variables – modification of passwords 4.6.3 During operation, on a PC connected to a set of relays via an E-LAN multi-point communication network – read relay protection and parameter settings, modifications following entry of protection setting or parameter password – display the relay measurement data – display the time-stamped alarm messages Last update : 2017-05-06 - 12 - Specification for Tender Document1 – display the relay, switch gear and network diagnosis data – retrieve disturbance recording data and all files recorded 4.7 User Machine Interface 4.7.1 The Digital Protective Relay shall incorporate a User Machine Interface (or UMI) with an alphanumeric graphical LCD and back-light display screen indicating: - Measurement values - Operating messages in major international languages (English native and local language) or shall accept translation possibilities if not available in the basic relay - System maintenance messages 4.7.2 The UMI shall display a clear information of alarm conditions. Signalling LED shall be available for alarms and status, including: Circuit Breaker position (open/closed), relay self test, phase fault and earth fault alarms. The UMI shall accept specific LED assignments 4.7.3 The UMI shall enable to: - Display metering and operating data, alarms and messages - Clear alarms and resetting - Access to protection and parameter settings 4.7.4 Access to setting mode shall be protected by two dedicated passwords of at least four digits: the first password shall protect access to protection settings, the second one shall protect to parameter settings 4.7.5 The User Machine Interface shall be available as: - Basic UMI including signalling and operating status LED - Advanced integrated or remote UMI monitoring measurement data and messages for local equipment operation - Mimic-based UMI ( High-end application) with selection of control mode (remote, local, test), animated mimic diagram 4.8 Communication 4.8.1 The Digital Protective Relay shall be communicating through one or two communication ports and integratable in communication architecture with information remote access. It shall be able to be interfaced to two types of communication networks providing access to data on each communication port, via: - A multi-protocol based Supervisory Local Area Network (S-LAN) to supervise functions regarding the installation and the electrical network from a supervision system (SCADA or RTU). - Modbus based Engineering Local Area Network (E-LAN) to configure, set up the relay, collect operating and diagnosis information, monitor the status of the electrical network and run diagnostics on electrical network incidents from the programming and configuration software. 4.8.2 The Digital Protective Relay shall use appropriate communication protocols depending on whether the relay interfaces an industrial process electrical network or a power substation of electrical distribution: - Modbus RTU, Field bus and Industry data transmission protocol, IEC 61158 foundation compliant, through Twister-Pair cable RS 485 (2-wire or 4-wire) or Fibre Optic link. - IEC 870-5-103, a companion standard of IEC 870-5 series to communicate between the Digital Protective Relay and the control system (Supervisor or RTU) inside a Utility power substation, through Twisted Pair Last update : 2017-05-06 - 13 - Specification for Tender Document1 cable RS 485 (2-wire) or Fibre Optic link. - DNP3, a data transmission protocol for remote control and monitoring of Utility power substations, IEC 870-5 series compliant, through Twisted Pair cable RS 485 (2-wire) or Fibre Optic link. - Modbus TCPIP and/or IEC 61850 for HV/MV Power Station Automation inside the substation through Ethernet 10//100 Mbits Base Tx or Base Fx , and Fibre Optic link. - IEC 61850 Ed.1 Level 1:For monitoring, control application, time stamping and simple Ethernet link: - Direct, single IEC 61850 Ethernet copper link - Monitoring of electrical characteristics, device status, protection functions and alarms - Circuit Breaker control: SBO (Select Before Operate) - Network diagnostic: disturbance event recording system - Time stamping and time synchronization through mandatory SNTP (Simple Network Time Protocol) - Smooth upgrading migration from an existing Modbus installation - Simultaneous Modbus TCP and IEC 61850 on the same Ethernet physical network - IEC 61850 Ed.2 Level 2: For enhanced Ethernet and IEC 61850 connectivity of digital protective relays and higher level of availability: - Direct double port Ethernet coupler for redundancy with: -Integrated switches -Copper of fibre optic link, based on ring management and open RSTP (Rapid Spanning Tree Protocol) (IEC 62439 Ed.1 compliant and IEEE 802.1d2004 - Monitoring of electrical characteristics, device status, protection functions and alarms - Circuit Breaker control: SBO (Select Before Operate) - Network diagnostic: disturbance event recording system - Time stamping and time synchronization through mandatory SNTP (Simple Network Time Protocol) - While supporting simultaneous Modbus TCP and IEC 61850 on the same Ethernet physical network - For improved protection and distributed automation based on GOOSE services: - Logic discrimination - Inter-locking/Inter-tripping - Fast load shedding - logic programming - Availability of both communication and redundant ports with a single IP address, if the digital protective relay is not operating (power off, relay failure) - Open on non proprietary switches (performance on network architechture will be checked) 4.8.3 The Digital Protective Relay and the Supervisor shall transmit operating data protected by password: - Relay to Supervisor: metering and diagnosis information. - Supervisor to Relay: remote-control orders. 4.8.4 The Digital Protective Relay shall provide: - time-stamped events facilities regarding the status changes of all logic inputs and all remote indications to time-stamp event within one millisecond. - time-setting and synchronisation facilities to ensure a long term stability or to co-ordinate a number of relays to be synchronised by an external pulse to a dedicated logic input or via the communication link. Last update : 2017-05-06 - 14 - Specification for Tender Document1 4.8.5 The Digital Protective Relay shall have remote setting possibilities to select protection-setting groups, read general parameters, read protection settings remotely, write protection settings remotely to be inhibited by parameter setting if needed. 4.8.6 The digital Protective Relay shall have network diagnostic information available, recorded in files, to transmit over the communication link: - Disturbance-recording records in COMTRADE format according to IEC 60255-23. - Tripping contexts. - Out-of-synchronisation context. - The datalog function of measurment. - The motor start report and trend files for valuable data. 4.9 Digital Protective Relay hardware architecture platform As per Annexes 7 5. Tender documents To support its technical offer description, the bidder shall submit the following documents relative to the Digital Protective Relay: 5.1 Relay architecture single line diagrams 5.2 Technical data sheets 5.3 Catalogues 5.4 User manuals and installation guide 5.5 Test and conformity certificates 5.6 Reference lists for similar application 6. Protection relay testing, commissioning and maintenance 6.1 Testing: Digital protective relays shall be tested prior to commissioning in order to maximise availability and minimising the risk of malfunctioning of the assembly being commissioned. Because of the use of digital technology the relay shall guarantee the reproducibility of announced performances over time and shall have undergone full factory qualification. So the Protective Digital Relay shall therefore be ready to operate without requiring any additional qualification testing that concerns it directly 6.2 Commissioning tests: The preliminary relay commissioning tests shall be limited to a commissioning check: 6.2.1 Checking of compliance with bill of materials and hardware installation diagrams and rules during a preliminary general check 6.2.2 Checking of the compliance of the general settings and protection settings entered with the setting sheets 6.2.3 Checking of current or voltage input connections by secondary injection tests 6.2.4 Checking of logic input and output connections by simulation of input data and forcing output status All the tests shall be carried out with the MV cubicle completely isolated and the MV circuit breaker racked out (disconnected and open) All the test shall be performed in the operating situation with the parameter setting and operating software or without software for relay with advanced UMI: no wiring or setting changes, even temporary changes to facilitate testing shall be allowed. Report and archives should be facilitated by easy software used. Last update : 2017-05-06 - 15 - Specification for Tender Document1 6.3 Maintenance The Digital Protective Relay shall not need any internal and specific maintenance over time, mainly for parameter settings and after commissioning. Nevertheless connections to the relay shall be checked preventively as well as the quality of output relay contacts to ensure that tripping and closing coils are properly energised and all control logic orders are properly transmitted . Communication test possibility should be permanently performed. Last update : 2017-05-06 - 16 - Specification for Tender Document1 7. Annexes 7.1 Annex A1 Protection selection guide for Substation applications ANSI Codes Designation 50/51 50N/51N 50G/51G 50BF 46 79 CLPU Phase over current Earth fault/Sensitive Earth fault Breaker Failure Negative sequence / unbalance Recloser (4cycles) Phase over current Cold load Pick Up CLPU Earth Fault current Cold Load Pick Up 27 Under voltage (L-L or L-N) 27D Positive sequence under current 27R Remanent under voltage 59N Neutral voltage displacement 81H Over frequency 81L Under frequency 81R Rate of change of frequency 47 Negative sequence over voltage 59 Over voltage (L-L or L-N) 67 Directional Phase over current 67N/67NC Directional Earth Fault 32P Directional active overpower 49RMS Thermal overload for cables 25 Synchro-check 46 BC Broken Conductor 21 FL Fault locator 37P Directional active under power (*option) Last update : 2017-05-06 Low-end solutions/ Applications Current Voltage Mid-end solutions/ Applications High-end solutions/ Applications * * * * * * * * * * * * - 17 - Specification for Tender Document1 7.2 Annex A2 Protection selection guide for Busbar applications ANSI Codes Designation Low-end solutions/ Applications 27D 27R 27 59 59N 81H 81L 81R 50/51 50N/51N 50G/51G 67 67N 68 50BF 46 47 25 *option Positive sequence under voltage Remanent under voltage Under voltage (L-L or L-N) Over voltage (L-L or L-N) Neutral voltage displacement Over frequency Under frequency Rate of change of frequency Phase over current Earth fault/Sensitive Earth fault Directionnal over-current Directionnal earth fault Logic discrimination Breaker Failure Negative sequence / unbalance Negative sequence over voltage Synchro-check Last update : 2017-05-06 Mid-end solutions/ High-end Applications solutions/ Applications * * * * * * * * - 18 - Specification for Tender Document1 7.3 Annex A3 Protection selection guide for Transformer applications ANSI Codes Designation 50/51 50N/51N 50G/51G 50BF 46 26/63 38/49T CLPU Phase over current Earth fault/Sensitive Earth fault Breaker Failure Negative sequence / unbalance Thermostat/Buchholz Temperature monitoring Phase over current Cold Load Pick Up CLPU Earth fault current Cold Load Pick Up 67 Directional Phase over current 67N/67NC Directional Earth Fault 49RMS Thermal overload for transformer 27 Under voltage (L-L or L-N) 59 Over voltage (L-L or L-N) 59N Neutral voltage displacement 47 Negative sequence over voltage 81H Over frequency 81L Under frequency 46 BC Broken Conductor 32P Directional active overpower 27D Positive sequence under voltage 27R Remanent under voltage 64REF Restricted Earth Fault 25 Synchro-check 24 Over fluxing (V/ Hz) 87T Two-winding transformer Differential *option Last update : 2017-05-06 Low-end solutions / Applications Current Voltage Mid-end solutions/ High-end Applications solutions/ Applications * * * * * * * * * * - 19 - Specification for Tender Document1 7.4 Annex A4 Protection selection guide for Motor applications ANSI Codes Designation Low-end solutions/ Applications 50/51 50N/51N 50G/51G 50BF 46 49RMS 37 48/51LR/1 4 66 38/49T 67N/67NC 32P 32Q/40 40 27D 27R 27 59 59N 47 81H 81L 26/63 12 14 78PS 87T Phase over current Earth fault/Sensitive Earth fault Mid-end solutions/ High-end Applications solutions/ Applications Breaker Failure Negative sequence / unbalance Thermal overload for machines Phase undercurrent Excessive starting time, locked rotor Starts per hour Temperature monitoring Directional Earth Fault Directional active overpower Directional reactive overpower Field loss (under impedance) Positive sequence under voltage Remanent under voltage Under voltage (L-L or L-N) Over volatage (L-L or L-N) Neutral voltage displacement Negative sequence over voltage Over frequency Under frequency Thermostat/Buchholz Over speed (2 set points) Under speed (2 set points) Pole slip Two-winding motor bloc differential Machine differential * * 87M * option Last update : 2017-05-06 - 20 - Specification for Tender Document1 7.5 Annex A5 Protection selection guide for Generator applications ANSI Codes Designation 12 14 21B 24 25 26/63 27 27D 27R 27TN/64G 2 64G 32P 32Q40 37P 38/49T 40 46 47 49RMS 50/51 50N/51N 50G/51G 50BF 50/27 50V/51V 59 59N 64REF 67 67N/67NC 78PS 81H 81L 87M 87T Over speed (2 set points) Under speed (2 set points) Under impedance Over fluxing (V/ Hz) Synchro-check Thermostat/Buchholz Under voltage (L-L or L-N) Positive sequence under voltage Remanent under voltage Third H3 Harmonic under voltage/100%stator Earth Fault Directional active overpower Directional reactive overpower Directional active under power Temperature monitoring Field loss (under impedance) Negative sequence / unbalance Negative sequence over voltage Thermal overload for machines Phase over current Earth fault/Sensitive Earth fault Breaker Failure Inadvertent energization Voltage-restrained over current Over voltage ( L-L or L-N) Neutral voltage displacement Restricted Earth Fault Directional Phase over current Directional Earth Fault Pole slip Over frequency Under frequency Machine differential Two-winding group bloc Differential Low-end solution Mid-end / Application solution/ Application * * * * * * High-end solutions/ Applications * * * * * * option Last update : 2017-05-06 - 21 - Specification for Tender Document1 7.6 Annex A6 Protection selection guide for Capacitor applications ANSI Codes Designation 24 Over fluxing (V/ Hz) 27 Under voltage (L-L or L-N) 27D Positive sequence under voltage 27R Remanent under voltage 38/49T Temperature monitoring 46 Negative sequence / unbalance 47 Negative sequence over voltage 49 RMS Thermal overload for capacitors 50/51 Phase over current 50N/51N Earth fault/Sensitive Earth fault 50G/51G 50BF Breaker Failure 51C Capacitor bank unbalance 59 Over voltage ( L-L or L-N) 59N Neutral voltage displacement 81H Over frequency 81L Under frequency option Last update : 2017-05-06 Low-end solutions/ Applications Mid-end solutions/ High-end Application solutions/ Applications * * * * * - 22 - Specification for Tender Document1 7.7 Annnex A7 Digital Protective Relay hardware architecture platform (--)Number of exemplary Designation Main analogue inputs Phase current (1A/5A) Residual current (sensitive) Phase voltage (100V) Residual Voltage Phase current (1A/5A) Residual current (sensitive) Phase voltage (100V) Residual Voltage Phase current (1A/5A) Residual current (sensitive) Phase voltage (100V) Residual Voltage User Machine Interface (UMI) Basic UMI integrated remote Mimic-based UMI Removable memory cartridge Disturbance recording saving Communication ports (service port included) Logic relay outputs (watch dog included) Additional Logic inputs/outputs Outputs Inputs Temperature data inputs Synchro-check Analogue Output Multi-protocol Communication Programming and configuration local /remote software *option Last update : 2017-05-06 Low-end solutions Mid-end / Applications solutions/ Current or Voltage Applications High-end solutions/ Applications (3) (1) (3) (1) (3) (1) (3) (2) (3) (1) (3) (2) (6) (2) (6) (2) (3) (1) (battery) (3) (5) (18) (40) (15) (1) (3) (1) – – – – – (2) (4) – (2) (4) * * * (2) (4) (4) (10) ( 8) – (1) (4) (10) ( 8) – (1) (4-16*) (10-28*) (15) * (1) - 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