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Download kk010 - installing of generator protection2009-08
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Transcript
INSTALLING OF GENERATOR PROTECTION Understanding the Maintenance Protection Protection system of electricity is 1. Current 2. Voltage 3. Angle between the two phrases General, component protection system : 1. Circuit Breaker (CB) and Fuse (fuse) 2. Relay 3. Current Transformer (CT) 4. Potential Transformer (PT) 5. Control cable / wairing 1. Circuit Breaker (CB) dan Fuse Equipment is directly related to DS (Disconect Switch) is a means of protecting the occurrence of the excess flow preventer, which can be sekring or CB. Picture Circuit Breaker (CB) DS (Disconect Switch) 2. Relay Relay adalah peralatan listrik yang berfungsi untuk melindungi, memutuskan atau menghubungkan suatu rangkaian listrik yang satu ke rangkaian listrik yang lainnya, yang bekerja secara otomatis dan dapat dipakai sebagai alat kontrol jarak jauh. Gambar Relay 3. Current Transformer (CT) Current Transformer is a type of instrument transformer designed to support the current that flows in the secondary coil proportional to the current pace that flows on the primary. Current Transformer (CT) 4. Potential Transformer (PT) Potential transformer is single phase transformer serves to decrease the voltage (Step down), the instrument designed for measurement / protection. Picture Potential Transformer (PT) 5. Control cable / wairing Conveyer cable as the flow of electricity, the most common material used is copper (Cu) have because of the nature of the high electricity Conductivitas. Cable NYAF Cable NYFGbY Cable Twisted 1. Analyzing the data maintenance system with the protection criteria, including: a. Data examination and testing of protection systems are identified to determine the feasibility of operation suitable standard. b. The cause of damage or deviation is identified according to standard equipment. 2. Plan and prepare for the implementation of the protection system: a. Resources needed for testing to identify suitable job specifications. b. Equipment work (images, intruksi work, etc.) are interpreted in accordance with the work plan c. Location work is prepared in accordance with the purposes and work procedures. 3. Create a report with the maintenance criteria include: a. Reports made in accordance with the format and procedures / intruksi work that has been set. b. Electrical installation standard maintenance program includes inspection, maintenance, repair and re-testing based on the maintenance instructions which have been determined (PUIL 2000-SNI04-0225-2000) Protection against failure of the unit may affect the damage of the unit as a whole. Therefore the program should be carried out maintenance of the system of protection in accordance with the provisions of the company carefully and manufacturer instructions. INSTALLING OF GENERATOR PROTECTION Understanding the Standard Termination of Protection PROTECTION SYSTEM REQUIREMENTS To get a good protection system required several conditions, among others: 1. Sensitive: Ability in detecting the minimum disturbance to the stimulus and only decided that the system is interrupted only. 2. Selective: A quality of neatness in the election security. PROTECTION SYSTEM REQUIREMENTS To get a good protection system required several conditions, among others: 3. Fast: Reaction from the protection system when the disturbance must occur quickly to minimize the objective possibility of expansion due to the disruption caused. 4. Reliable : Ability protection system in normal circumstances and in the interference and should certainly work. So that the reliability of equipment protection system terga, the required periodic testing. PROTECTION SYSTEM REQUIREMENTS To get a good protection system required several conditions, among others: 5.Economical: With the cost of a child-protection system is expected to be able to work well 6. Simple: System protection devices have required a simple and flexible. STANDARD TERMS OF PROTECTION SYSTEM Standard protection system requirements: 1. Protection system must be able to nominal flow continuously without excessive heating (overheating). 2. Overload on a small lapse of time that short should not cause the equipment to work. 3. Protection must be working, even though the overload occurs a small but long enough so that they can cause overheating in the series conveyor. STANDARD TERMS OF PROTECTION SYSTEM Standard protection system requirements: 4. Protection must be opened before a series of damage caused by the flow disturbances that can occur; 5. Protection must be able to "separation" (discriminative) only on the set of the series only and subject to the other should still operate. Considerations Choice Protection System In selecting the system protection are issues that must be considered, among others: BENEFITS OF PROTECTION SYSTEM 1. Avoid or reduce damage to equipment due to interference (abnormal operating condition of the system). The quick reaction of the protection device is used then the effect will be less disruption to the possibility of damage to equipment. 2. Quickly localize broad area is broken, may be small; BENEFITS OF PROTECTION SYSTEM 3. Can provide electricity with high reliability to the customer and also the good quality of electricity 4. Securing against the human hazards caused by electricity. Termination Protection Standard Termination protection standards must be in accordance with the rules of the applicable electrical installation as PUIL and should be dituruti. Standards referred to both standards, both local and international standards must be observed as SPLN, IEC 60947-2. INSTALLING OF GENERATOR PROTECTION Testing Secure of Generator - Protection system fails to work at all for the work - Failed selektip so that the extinction of a wide - Failed to work quickly cause damage to - Failure which caused the wrong jo Technology and Engineering 1. Relay does not work 2. Battery voltage low 3. Wiring secondary protection circuit to short 4. There is damage to the contacts PMT 5. The mechanism of PMT jammed 6. Settings is not correct relenya (less sensitive or less quickly) 7. PMT failure in the flow disturbances that can be caused by the flow gangguanya too large exceeds the ability of termination (interupting capability), or the ability pemutusannya has dropped, or because there is damage; 8. Tele communication channel failure protection. Technology and Engineering The steps in conducting the test generation system protection, among others: 1. Protection system test results recorded according to standard and test center of power; 2. Test results compared with the standard test centers of power; 3. Test results will be done outside the standard test is believed to have been reset in accordance with standard test centers of power. How can I test the implementation of a comprehensive protection system? INSTALLING OF GENERATOR PROTECTION Manage Secure Settings of Generator Adjustment More Cash Adjustment of the relay currents flow over the load flow is calculated based on the incoming flow dipenyulang or transformer, means: 1. For more current relays installed in penyulang calculated based on the maximum load current that flows in these penyulang; 2. For more current relays installed in the incoming transformer are calculated based on the current transformer is nominal. Invers regular relays of 1.05 set s.d. 1.1 x Income, Relays Definit set of 1.2 s.d. 1.3 x I burden. Adjustment More Cash Relay Characteristics: TIME Delay Characteristics CERTAIN (Definite TIME) t SET I SET I (ampere) Characteristics definite time: can flow in the setting of a small setting time Characteristics the Combination t (seconds) Characteristics the combination instant on time inverse pause I (ampere) Used for setting and inverse moment Security Energy SYSTEM TO ELECTRICITY A 1 2 1 3 B C 2 4 5 D 6 7 1. Differential Relay Security Main Gen etc. 2. Distance Relay Security Main transmission etc. 3. Differential Relay Security Main transformer etc. 4. Over Current Relay 150 kV transformer the Local Security Backup transformer Security Reserves Away Bus B 5. OCR GFR and the 20 kV transformer Security Main Bus B1 Security Backup Far Channel BC 6. OCR and GFR in the B2 channel BC Home Security Security Backup CD Far channel 7. OCR and GFR in the C channel CD Security Main Security Backup Far following section Coordination Relays Coordination Relays Definite A t in Sub 1 = t+ta Sub2 B Sub3 t ta = t+tb C t tb = t+t 51 51G tc 51 51 51 51G 51G 51G Coordination Relay Inverse 51 51 51 51 51G 51G 51G 51G 51N Coordination Relays 1. SMALL GENERATOR (isolated system) Power: 500 s / d 1000 kVA voltage 600 volt (maximum) 1- 51V, ba1 - 51V, backup overcurrent relays, voltage control or voltage control 1-51G, backup ground time overcurrent relay Coordination Relays 2. Medium GENERATOR (isolated systems / parallel) Power: 500 s / d 12 500 kVA voltage 600 volt (maximum) 3 - 51V, backup overcurrent relays, voltage control or voltage control 1-51G, backup ground time overcurrent relay 1 - 87, differential relay 1 - 32, reserve power to control relay protection 1 - 40, Impedance relay, to the loss of field Security of Area Security of Area 1. Electric power system divided into several sections - the section. the one with the other or can be connected by pmt. 2. Each section is secured by relays, each relay and have the security of the area Security of Area REGION Security GENERATOR REGION Security GENERATOR-transformer SECURITY AREA FROM PEACEMAKER ISTEM ELECTRIC POWER REGION Security BUSBAR REGION Security TRANSMISSION REGION Security Transformer REGION Security BUSBAR REGION Security BUSBAR TM REGION Security TM NETWORK Security of Area Rele The Secondary Flow CT GI Interference • CT transfer the amount of primary to produce secondary + - • Rele detectors only work flow with small accurate • Please Volt DC source for tripping PMT Characteristics can be selected Definite, inverse, Very-inverse or inverse Extreemely. Security of Area CT OCR + DC SUPPLY TR AUX R - DC SUPPLY AUX R Single Diagram PLTU 46 32 40 37 21 GB Single diagram pltu 87G PT 60 CT G SWITCHGEAR 59/81 AVR 64F 59 87 AT 51 51N GT 96 87GT 96 51 51N RT 51N 87 51N 86G 86GB A A1 AB1 B1 B 51N Single Diagram PLTU 46 32 60 PT 37 40 21 DIAGRAM SINGLE PROTECTION PLTU 87G CT G 59/81 AVR 64F 59 87 96 AT 51/51N 51/51N 87GT 96 51N GT 86GB A A1 51N 96 51N 86G RT 87 AB1 B1 B 86RT IBAA DOC Electrical Power Plant THE END