Download Augmentation Protection

PROTECTION AND CONTROL
REQUIREMENTS FOR HEYWOOD
TERMINAL STATION (HYTS)
AUGMENTATION
PREPARED BY:
Connection Services
VERSION:
2.0
RELEASE DATE:
4 October 2013
Document:
PCR / HYTS /18
Issued WITHOUT Settings
PROTECTION AND CONTROL REQUIREMENTS
Version Release History
Version
Date
Prepared by
Reviewed
by
Approved
By
1.0
15 July 2013
F. Ma
E. Twining /
M. Redpath
A. Dinning
2.0
12 September
2013
E. Twining
M. Redpath
A. Dinning
Changes
Updated to incorporate
tender clarifications
This document has been created by Connection Services, Network Development.
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PROTECTION AND CONTROL REQUIREMENTS
Contents
1
Glossary ........................................................................................................... 4
2
General Information ......................................................................................... 4
3
Interface Boundaries ........................................................................................ 5
4
Protection Requirements .................................................................................. 7
5
Control and Monitoring Requirements .............................................................. 8
6
Remote Monitoring and Control from TOC and AEMO ...................................10
7
Miscellaneous Requirements ..........................................................................10
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1 Glossary
In this document, capitalised words or phrases or acronyms not defined in the PCCD, have the
meaning set out opposite those words, phrases, or acronyms in Table 1 below.
Table 1: Glossary of terms
Term
Meaning
APD
Portland Aluminium
DNSP
Distribution Network Service Provider
EAPTS
Emergency APD Potline Tripping Scheme
MOPS
Mortlake Power Station
ROI
Remotely Operated Isolators
TRTS
Tarrone Terminal Station
X/R ratio
Ratio of reactance to resistance
2 General Information
2.1 Introduction
This document specifies the protection, control and monitoring requirements for the Augmentation.
2.2 Related Documents
This document should be read in conjunction with the documents listed in Table 2.
Table 2: Related Documents
Document Number
Document Name
PCR/HYTS/17
Protection and Control Requirements for Heywood Terminal Station (HYTS)
Interface
Primary Functional Requirements for Heywood Terminal Station (HYTS) Interface
Primary Functional Requirements for Heywood Terminal Station (HYTS)
Augmentation
2.3 Interdependencies
Implementation of the Project requires the completion of the Augmentation and Interface in
accordance with the PFRs and PCRs for each.
The PCRs and PFRs referred to in the documents listed in Table 2 are required in addition to the
works described in this document.
2.4 Plant operating conditions
Expected power system conditions have been included to allow the design of the secondary
equipment and for the preparation of secondary settings. These conditions are outlined in
Appendix B.
The fault levels and X/R ratios shown in Table A-1 apply to plant when the Augmentation is
complete. The plant loading levels shown in Table A-2 apply when the Augmentation is complete
and represent peak loading under worst case prior outage and single contingency conditions.
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PROTECTION AND CONTROL REQUIREMENTS
TNSP must ensure that protection and control systems and settings are implemented such that
they will not operate for plant loading levels up to at least those shown in Table A-2.
TNSP must ensure that protection and control systems and settings are implemented such that
they will not operate for voltage conditions that the plant must ride through. These voltage
conditions are set out in Table A-3.
2.5 General requirements
2.5.1 Provision of Data
AEMO will advise the TNSP generally three months prior to service of the following information:

Parameters for the synchronism-check interlock facilities; and

Parameters for all voltage controls and interlocks.
2.5.2 Security Requirements
If the following facilities are provided as part of the project in accordance with this PCR, they must
be duplicated and/or be provided with an adequate measure of physical and electrical segregation.
The design must avoid common points of failure between the duplicated facilities:

Batteries used for protection, control and communications purposes;

Battery chargers;

Auxiliary supplies;

Protection panels;

Circuit breaker trip coils;

Control cables containing X and Y protection quantities, including:
o
Trip circuits to CBs;
o
CT and VT secondaries;
o
Communication systems; and
o
Transformer quantities used for protection purposes.
Wherever available, independent physical routes must be used for control cables. Otherwise,
control cables must be secured to opposite sides of the route for the length of the common
physical route.
3 Interface Boundaries
Protection, monitoring and control signals must be exchanged at the Interface. The physical
location of the Interface will be specified in the connection agreement between SPI PowerNet and
the TNSP. This document specifies the functional obligations on either side of the Interface.
3.1 Primary Interfaces
The primary interfaces are outlined in the document titled: “Primary Functional Requirements for
Heywood Terminal Station Interface”.
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3.2 Secondary Interfaces
This document specifies the minimum requirements for the exchange of secondary signals and
quantities through the Interface.
3.3 Secondary signals and quantities at interfaces
Secondary signals and quantities exchanged through the Interfaces include:
Table 3: Secondary Signals and Quantities
Class of signal or quantity
Protection
Plant monitoring and controls
Monitoring and controls for remote
system operation
System monitoring (HSM, QoSM)
Special control schemes (emergency
control schemes)
Auxiliary supplies
Type of signal or quantity
 trips
 interaction such as fibre optic communication links between
Protection devices
 Protection device inputs such as binary, current and voltage
 controls, status indications, alarms and instrumentation
 controls, status indications, alarms and instrumentation







inputs such as current and voltage
files for transmission remotely
controls, status indications, alarms and instrumentation required
locally for correct operation
inputs received from remote locations
outputs transmitted remotely
240V and 415 V ac supplies
Protection, control and communications dc supplies
3.4 Obligations at Interface Points
TNSP and SPI PowerNet must exchange signals at the Interface to achieve the functional
requirements specified in PCR/HYTS/17 and PCR/HYTS/18. More particularly:
TNSP must:

Provide secondary signals and quantities, identified in PCR/HYTS/18 for the Augmentation
at the Interface for use by SPI PowerNet;

Utilise secondary signals and quantities, identified in PCR/HYTS/18 for the Augmentation
provided by SPI PowerNet at the Interface.
SPI PowerNet must:

Provide the secondary signals and quantities, identified in PCR/HYTS/17 for TNSP at the
Interface;

Utilise secondary signals and quantities, identified in PCR/HYTS/17 provided by TNSP at
the Interface.

Transmit signals and quantities, received from the TNSP at the Interface, to appropriate
sites; and

Transmit signals and quantities to the TNSP at the Interface.
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4 Protection Requirements
4.1 General requirements
TNSP must coordinate with SPI PowerNet to ensure the design of the protection systems on the
Augmentation seamlessly integrate with SPI PowerNet’s protection systems at HYTS.
TNSP must ensure that its protection systems comply with the requirements detailed in Table 4.
Table 4: General Protection Requirements
Requirement
 Each protection system in a duplicated protection scheme (designated “X” and “Y” throughout this
document) must be of different manufacturer or have differing operating principles. If this is not possible
then permission from AEMO must be obtained to implement the proposed arrangement.
 All circuit breaker backup and dead zone trips must be independently initiated by X and Y primary
protection.
 Protection times specified apply to both X and Y protection schemes.
 All fault clearance times, including backup/dead zone protection, include circuit breaker operating times,
including (where applicable) those at remote locations.
 Saturation characteristics of current transformers used for protection purposes must be suitable to meet
the operating requirements of the protection with margins in accordance with good electricity industry
practice.
 Where new plant is added to the terminal station, that plant must be integrated into all existing protection
systems as required.
The fault clearance times referenced throught this PCR are detailed in Appendix C.
4.2 Augmentation Protection
4.2.1 Primary Protection Systems
TNSP must ensure that duplicated primary protection schemes are established or modified to
detect and clear all faults within the Augmentation.
If a fault occurs within the Augmentation, TNSP must ensure that:

all assets under its control required to operate to clear the fault do operate to clear the fault;

the fault is cleared within the time listed in Row 1 of Table B-1 for a 500 kV fault measured
from fault inception;

if the fault clearance requires operation of SPI PowerNet’s 275 kV shared network circuit
breakers, protection trip signalling is provided to SPI PowerNet at the Interface within the
time listed in Row 1 of Table B-2 measured from fault inception.
Where trip signals are provided by SPI PowerNet at the Interface and operation of the
Augmentation is necessary to clear a fault (while isolating the minimum amount of plant necessary
to clear the fault), TNSP must ensure that the Augmentation operates within the fault clearance
time listed in Row 2 of Table B-1, measured from the time the protection signalling is provided.
4.2.2 Backup Protection Systems
For all faults detected by the TNSP’s primary protection schemes, TNSP must ensure that the
primary protection system that detects the fault initiates the backup/dead-zone protection system
associated with the faulty plant.
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If a fault occurs that requires the operation of the Augmentation and it fails to clear the fault, or the
fault has occurred within a dead zone, TNSP must ensure that:

all assets required to operate to clear this fault operate to clear the fault within the time
listed in Row 3 of Table B-1 measured from fault inception;

trip signals are provided to SPI Power Net at the Interface when a SPI PowerNet circuit
breaker is required to operate to clear the fault;

trip signals are provided to SPI PowerNet within the time listed in
o
Row 2 of Table B-2 for 500 kV assets, measured from fault inception;
o
Row 3 of Table B-2 for 275 kV assets, measured from fault inception.
Where trip signals are provided by SPI PowerNet at the Interface and the operation of the
Augmentation is necessary to clear a fault (while isolating the minimum amount of plant necessary
to clear the fault), TNSP must ensure that the Augmentation operates within the fault clearance
time listed in Row 4 in Appendix C measured from the time the signalling is provided.
5 Control and Monitoring Requirements
5.1 General requirements
TNSP must ensure that:

equipment is arranged so that failure of local automatic or remote manual controls cannot
prevent operation of the local manual switching controls at HYTS;

interlocking signals (for example voltage measurement or CB status indicators) of
appropriate security provided at the Interface by SPI PowerNet are utilised to prevent
asynchronous closure of 500 kV CBs while Victoria and South Australia are separated;

all isolators are motorised; and

controls are implemented for all circuit breakers and ROIs referred to in this document to
meet the requirements outlined in Table 5.
Table 5: General Circuit Breaker and ROI Control Requirements
Facility
 Local and remote circuit breaker trip (open) and close controls
 Circuit breaker local and remote open and closed status indications
 Circuit breaker alarms as required by CB type and for remote operation
 Circuit breaker pole (phase) discrepancy (CB to trip and raise alarm on detection of discrepancy) if
required by CB type (e.g., separate mechanism for each phase)
 All isolators are motorised (Remote Operated Isolators [ROI])
 ROI open and close controls (local and remote)
 ROI open and close operation interlocked with CB and earth switch status
 ROI local and remote open and closed status indications
5.2 Control Requirements
5.2.1 Remote Control Requirements for Circuit Breakers and ROIs
TNSP must provide facilities that will allow TOC to remotely open the 500 kV circuit breakers in
accordance with the requirements of
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Table A-4 in Appendix B.
5.2.2 Circuit Breaker Control Requirements
TNSP must provide facilities in accordance with the following:

General Circuit Breaker Control Requirements included in Table A-5

General ROI Control Requirements included in Table A-6;

Transformer Circuit Breaker Control Requirements included in Table A-7.
5.2.3 Transformer Tap Changer Control Requirements
Design of the transformer tap changer control scheme must be co-ordinated with SPI PowerNet to
acheve regulation of the 275 kV bus voltage. The following modes of operation must be
implemented:

Automatic master (M1) – slave (M2) – slave (M3) arrangement when three transformers are
operating in parallel;

Automatic master (M2) – slave (M3) arrangement when M1 is out of service.

Automatic / manual independent arrangement when M1 and M2 are out of service.
5.3 Voltage sources
TNSP must:

implement at least two voltage sources for each 500 kV Bus and the 275 kV Bus;

implement automatic potential selection arrangements to provide secure voltage sources
for control and monitoring systems;

obtain the potential selections from appropriate and suitably switched (via CB and ROI
auxiliary switches) bus and line voltage sources;

provide potentials for manual synchronising that are manually selectable only;

meet the performance requirements listed in Table A-8; and
TNSP may negotiate with SPI PowerNet to use SPI PowerNet’s existing voltage sources at HYTS
provided they meet the above conditions and the burdens are within the source ratings.
Instrumentation
5.4
5.4.1 Accuracy
The total overall errors of measurements must be less than:

1.0% of range for current and voltage measurements, and

2.0% for other measurements.
5.4.2 Instrumentation ranges
The HYTS TNSP must provide instrumentation quantities specified in Table A-9.
5.5 Alarms
TNSP must ensure that control and protection alarms are provided for the Augmentation in
accordance with good electricity industry practice, including alarms related to the following:
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




Protection schemes;
communications (including RTU alarms, if required);
fire (including transformer fire alarms if applicable);
double pole discrepancy; and
any other plant alarms or protection and control alarms required for safe and reliable
operation of the Augmentation.
6 Remote Monitoring and Control from TOC and AEMO
TNSP must, in conjunction with SPI PowerNet, provide or modify local monitoring and control
facilities at HYTS as appropriate for any terminal station quantities that are added or altered as a
consequence of the Project, and include the required facilities for remote monitoring and control.
This requirement applies to all plant and controls identified in this document.
6.1 Communications
Table 6: Communication requirements
Communication requirements
 Quantities associated with the Augmentation must be transmitted to AEMO in accordance with AEMO
requirements (refer National Electricity Rules clause S5.2.6).
 Duplicated communications facilities are required for transmission of data between TNSP and AEMO.
 Duplication of dc auxiliary supplies to the communications facilities is required to prevent simultaneous loss of
both communications links. (Excludes RTUs)
 Communications facilities (including RTUs) must meet AEMO requirements in respect of scan rates, update
times, RTU turnaround times etc.
6.2 Remote Monitoring and Control Signals
TNSP must make the remote monitoring and control quantities listed in Table A-9 and Table A-10
available to AEMO via a direct link communications connection. Remote control from AEMO is to
be carried out through direct operator communications.
TNSP must make the remote monitoring and control quantities listed in Table A-11 available to SPI
PowerNet at the Interface.
The HYTS TNSP is to receive the remote monitoring and control quantities listed in Table B-14 and
Table A-12 at the Interface from SPI PowerNet.
7 Miscellaneous Requirements
7.1 AC Supplies
Two independent AC supplies are required. Each of these AC supplies must be sufficient to
provide supply to:


all of the TNSP's equipment requiring AC supply (excluding lighting);
meet the AC load requirement advised by SPI PowerNet for the Interface.
Acceptable sources of AC supplies include the following:

Transformer tertiary windings;
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

Feeder supplies from DNSPs. Where two feeder supplies are used, these shall preferably
be from different substations or where this is not practicable, from different buses from the
same substation; and
Diesel generator. Portable generators are acceptable provided they can be connected and
operated before expiration of battery service. If a diesel generator is included in the AC
supplies, the diesel generation should be capable of operating for at least 12 hours as per
the existing diesel generation at HYTS.
TNSP must submit the AC Supply design to AEMO for approval.
7.2 DC Supplies
7.2.1 DC Supply Requirements
TNSP must ensure that:





Two independent and appropriately sized DC supplies are provided;
DC supplies will be provided from batteries. Use of external dc supplies is not acceptable;
The main batteries are duplicated batteries;
Communication supplies are duplicated and are provided from either separate batteries or
from DC – DC converters; and
X and Y supplies are segregated.
7.2.2 DC Supply battery capacity
If diesel generation is provided as an alternative AC source the following DC battery capacities are
required:


Battery for X & Y supplies: 5 hours plus 2 open and 1 close operations for each CB
including 2 open and 1 close operation for each ROI
Communication Batteries: 5 hours
Alternatively, if diesel generation is not provided the following DC battery capacities are required:


Battery for X & Y supplies: 8 hours plus 2 open and 1 close operations for each CB
including 2 open and 1 close operation for each ROI
Communication Batteries: 10 hours
7.3 Quality of Supply Monitoring (QoSM)
7.3.1 General Requirements
The TNSP must provide the following signals at the Interface for the purposes of QoSM:
 500 kV 3 phase (R, W, B) transformer currents; and
 275 kV 3 phase (R, W, B) transformer currents.
7.3.2 Transducer Requirements
The TNSP must ensure that:
 The transducers selected for current measurements represent a technically suitable
source of the quantities required;
 Current is measured using metering class CTs (with an accuracy class of 0.2); and
 The response of the transducers is designed to ensure that saturation does not occur
under normal conditions.
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Appendix A: Tables
Table A-1: Fault Levels
Plant
HYTS 500 kV bus
HYTS 275 kV bus
Maximum Fault Levels
3ph (kA)
1ph-g
X/R ratio
(kA)
50
50
35
40
40
30
Table A-2: Plant Loading
Plant
500kV Circuit breakers
275 kV Circuit breakers
275 kV Capacitor bank circuit breaker
Minimum Fault Levels
3ph (kA)
1ph-g
X/R ratio
(kA)
TBA
TBA
TBA
TBA
TBA
TBA
Load (kA)
TBA
TBA
TBA
Table A-3: Voltage Conditions
In addition to the requirements of Figure S5.1a.1 in the Rules (for nominal voltage), Plant will be exposed to the
following voltage profiles:
Voltage Level – 500 kV Buses
Duration
565 kV
30 minutes
Voltage Level – 275 kV Bus
Duration
311 kV
30 minutes
Table A-4: Requirements for Remote Control of Circuit Breakers and ROIs from TOC
Plant
Remote Control From TOC
M3 Transformer / No 1 500 kV Bus CB
Required
(open only)
M3 Transformer / No 2 500 kV Bus CB
Required
(open only)
M3 Transformer 500 kV ROIs
Not Required
M3 Transformer 275 kV ROIs
Not Required
Table A-5: General Circuit Breaker Control Requirements
Control
Local and remote manual synchronising
Remote synchronism-check interlock and interlock bypass
Pre-contingent Voltage Interlock
Requirement
Required
Required
Not Required
Table A-6: General ROI Control Requirements
Control
Local and remote Open and Close controls
Interlocked appropriately with circuit breaker and earth switch operation
Requirement
Required
Required
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Table A-7: Transformer Circuit Breaker Control Requirements
500 kV CB Control
Local and remote manual synchronising
Remote synchronism-check interlock and interlock bypass
- Voltage differential
- Angle differential
- Frequency differential
- Undervoltage Blocking
Point on Wave switching interlock and interlock bypass
Three Pole Auto Reclose
Voltage Interlock
Live Line Lockout
Single Pole Auto Reclose
Requirement
Required
Required
Setting
TBA
TBA
TBA
TBA
Required
Not Required
Not Required
Not Required
Not Required
Table A-8: Potential Selector Performance Requirements Requirements
Performance requirement
Time
Drop out time on potential selection relays used for DSMs (and later Not less than 400 milliseconds
HSMs)
Changeover time between potentials
Not greater than one second
Table A-9: Instrumentation to be provided by HYTS TNSP to SPI PowerNet and AEMO
Plant
Quantity
Required ranges
M3 Transformer
Voltage (3-phase) HV side
0 – 600 kV
Voltage (3-phase) MV side
0 – 340 kV
Current (3-phase) HV side
TBA
Current (3-phase) MV side
TBA
Active power
TBA
Reactive power
TBA
Tap position
TBA
Top oil temperature
TBA
Winding temperature
TBA
Frequency
45-55 Hz
M3 Transformer / No 1 500 kV Bus
CB
Current (3-phase)
0 – TBA kA
M3 Transformer / No 2 500 kV Bus
CB
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Table A-10: Instrumentation Quantities to be provided by SPI PowerNet to TNSP
Instrumentation
 M1 Transformer active and reactive power
 M1 Transformer tap position
 M2 Transformer active and reactive power
 M2 Transformer tap position
 TRTS No. 1 500 kV Line active and reactive power
 MOPS No. 2 500 kV Line active and reactive power
 APD No. 1 500 kV Line active and reactive power
 APD No. 2 500 kV Line active and reactive power
 SESS No. 1 275 kV Line active and reactive power
 SESS No. 2 275 kV Line active and reactive power
 No 1 500 kV bus voltage
 No 2 500 kV bus voltage
 275 kV bus voltage
Table A-11: Remote monitoring and control quantities to be provided to AEMO
Controls (via operator communications)





M3 Transformer / No 1 500 kV Bus CB open / close
M3 Transformer / No 1 500 kV Bus ROIs open / close
M3 Transformer / No 2 500 kV Bus CB open / close
M3 Transformer / No 2 500 kV Bus ROI open / close
M3 Transformer 275 kV ROIs open / close
Status Indications
 M3 Transformer / No 1 500 kV Bus CB open / closed and local / remote
 M3 Transformer / No 1 500 kV Bus ROIs open / closed and local / remote
 M3 Transformer / No 2 500 kV Bus CB open / closed and local / remote
 M3 Transformer / No 2 500 kV Bus ROIs open / closed and local / remote
 M3 Transformer 275 kV ROI open / closed
 Position of all Earth Switches owned by TNSP
Alarms







Version 2.0
Alarms relating to protection or devices relating to protection
RTUs and other communications facilities
dc auxiliary supplies
remote tap position indication (TPI)
Double pole discrepancy
Fire (including transformer fire alarms where applicable)
Any other plant alarms or protection and control alarms required for safe reliable operation of
TNSP owned plant.
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Table A-12: Remote Monitoring and Control Quantities to be provided by TNSP to SPI PowerNet
Controls (direct)
 M3 Transformer / No 1 500 kV Bus CB open
 M3 Transformer / No 2 500 kV Bus CB open
Status Indications
 M3 Transformer / No 1 500 kV Bus CB open / closed and local / remote
 M3 Transformer / No 1 500 kV Bus ROIs open / closed and local / remote
 M3 Transformer / No 2 500 kV Bus CB open / closed and local / remote
 M3 Transformer / No 2 500 kV Bus ROIs open / closed and local / remote
 M3 Transformer 275 kV ROI open / closed
 Position of all Earth Switches owned by TNSP
Alarms







Alarms relating to protection or devices relating to protection.
RTUs and other communications facilities
dc auxiliary supplies
remote tap position indication (TPI)
Double pole discrepancy
Fire (including transformer fire alarms where applicable)
Any other plant alarms or protection and control alarms required for safe reliable operation of
TNSP owned plant.
Table A-13: Remote Monitoring and Control Quantities provided by SPI PowerNet to TNSP
Controls
N/A
Status Indications
 TRTS / APD No 1 500 kV Line CB and ROI open / closed
 MOPS No 2 / APD No 2 500 kV Line CB and ROI open / closed
 M1 Transformer 500 kV ROI open / closed
 M2 Transformer 500 kV ROI open / closed
 M1 Transformer / SESS No 1 500 kV Line CB and ROI open / closed
 M2 Transformer / SESS No 2 500 kV Line CB and ROI open / closed
 SESS No 1 275 kV Line / 275 kV Bus CB and ROIs open / closed
 SESS No 2 275 kV Line / 275 kV Bus ROIs open / closed
 275 kV Capacitor Bank CB and ROIs open / closed
 Position of all Earth Switches owned by SPI PowerNet
Alarms
 Indications of malfunction or unavailability of all or any part of plant or facilities owned by SPI
PowerNet
 RTUs and other communications facilities
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Appendix B: Maximum Fault Clearance Times
Table B-1: Protection Timing Requirements
Row
Clearance Time (milliseconds)
1
80 from the inception of fault
2
40 from provision of protection signalling
3
175 from the inception of fault
4
50 from provision of protection signalling
Table B-2: Protection Signalling Timing Requirements
Row
Signalling Time (milliseconds)
1
30 from the inception of fault
2
125 from the inception of fault
3
200 from the inception of fault
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