Power Supply for a Metro 9.8.12 System

POWER SUPPLY FOR A METRO SYSTEMMahendra Kumar CEE/DMRC 9.8.12 MAP OF THE PRESENTATION • IEC 61850 • ADOPTION 61850 in DMRC • Reliability of Power supply • Arrangements adopted in DMRC IEC 61850 FUNCTIONAL DESIGN SPECIFICATION SUBSTATION AUTOMATION SYSTEM BE-8A FUNCTIONAL PARTS OF SAS BE-8A • SAS comprises of • Bay Control IED Unit (BCU) • Bay Protection IED Unit (BPU) • Station Human Machine Interface (Main and Stand by) • Gateway for Remote Control Centre • Communication through fibre optic medium • Ethernet switch • Peripheral devices like printer, display unit, keyboards etc • DR workstation • GPS for Time Synchronising • UPS • Standard Functionality and communication as per IEC 61850 standard. BAY CONTROL UNIT • Bay Control IED Unit has • Fully Complaint to IEC 61850 standard • Control and Monitoring function • Synchro-check function • Voltage selection function • In built back up o/c protection function • Displays status of bay oriented equipments • Peer-Peer communication using GOOSE message for interlocking function • Communication through fibre optic medium • Interoperable with third party IEC 61850 compliant devices • Directly Connected to the inter bay bus on IEC 61850 STATION LEVEL HMI FUNCTIONS • Station level HMI functions • Displays status of all equipments of each bays in single line diagram format • Controlling of all equipments of each bays • Measurements • Event and Alarm Handling • System supervision • Event and Alarm list generation • User authority levels • Reports handling • Disturbance analysis • IED parameter setting COMMUNICATION DEVICES • Gateways • Communication interface medium for Remote OCC. • Two ports for simultaneous reporting to two masters i.e. at shastripark and Metrobhavan • One spare port for future use. • Fibre optic medium • Data exchange between IED on bay level and Station level through fibre optic cables • Disturbance free communication COMMUNICATION DEVICES • Ethernet switch • Interface device between IED at bay level and Station level for data exchange • One switch for two bays • Data exchange as per IEC 61850 standard • Operates on 110V dc SYSTEM HARDWARE • Station Hardware • Main and Standby station HMI workstation • DR workstation for disturbance handling • Plasma screen for display of overall SLD of the station • Printers (one Laser and one DoT matrix type) • GPS receiver for time synchronizing FUNCTIONAL REQUIREMENTS Four level of operations • Operation Control Centers(OCC) • Station HMI (Station level) • Local Bay Controller IED (Bay level) • Apparatus levelOperations shall be possible by only one operator at a time subject to interlocking, synchrocheck and other functions etc LIST OF IED • BCU • REC 670 IED dedicated for controlling, monitoring and back up o/c protection function for each and every bay of 66/33/25kV level • BPU • RED 670 IED dedicated for Line or cable differential protection with backup distance protection function for 66kV incomer bays • RET 670 IED dedicated for Transformer diff. protection with integrated REF and standby E/F protection function for Transformer bays. • REB 670 IED dedicated for BusbarProtection function for 66kV busbar • REO 517 dedicated for 25kV Traction feeder protection ADVANTAGES OVER CONVENTIONAL SYSTEM • Highly reliable • Less maintenance • Reduced hardwiring • Conventional RTU’snot required. • Modification or Extension of components does not require shutdown of whole SAS • Safety for operating staff • Minimum basic training is required for operating staff. SHASTRI PARK DEPOT (RSS 220kV) (RSS 66kV GIS) (RSS 66kV) (RSS 66kV) DWARKA NJF DEPOT (RSS 66kV) INDRAPRASTHA (RSS 66kV) SUSHANT LOK KHYBER PASS Red Line Yellow Line Blue Line SYMBOLS Interchange Station (Existing) Future Interchange Station GTB NAGAR JEHANGIRPURI VISHWA VIDYALAYA DILSHAD GARDEN VAISHALI ANAND VIHAR BOTANICAL NOIDA S-32 CITY CENTRE GARDEN SARITA BADARPUR SHUSHANT CHATARPUR SAKET LAJPAT NAGAR CENTRAL SECRETIAT IP RAJIV CHOWK KIRTI SUBHASH D W A R K A S E C 9 NAGAR D W A R K A S E C 2 1 A IR P O R T M U N D K A R I T H A L A I N D E R L O K ASHOK PARK NAGAR U/G Line YAMUNA BANK DEPOT S H I V A J I S T D M . RSS 2 .5 0 K m GHITORNI DEPOT VIHAR DEPOT MUNDKA (RSS 220kV) (RSS 132kV) (RSS 66kV) (RSS 66kV GIS) GATE AMBEDKAR COLONY (RSS 66kV GIS) (RSS 66kV GIS) RITHALA NEW DELHI KASHMERE LOK (RSS 66kV GIS) AIRPORT (RSS 66kV GIS) PARK STREET SHAHDRA The Delhi Metro Rail Corporation (DMRC) has successfully completed the Phase I & Phase II of construction of Metro Corridors, namely • Line 1 (Shahdara-Rithala), • Line 2 (Vishwa Vidyalaya-Central Secretariat) • Line 3 (Barakhamba Road-Dwarka, including extension Dwarka-Dwarka Subcity and Barakhamba Road-Indraprastha). • Line 4 • Line 5 • Line 6 As part of Phase I & II Projects, 6 & 8 Receiving Substations have also been installed respectively POWER SUPPLY ARRANGEMENT FOR PHASE-I Line No. Name of DMRC RSS Abbre- viation Incoming Voltage Source of Supply Grid Substation Remarks Location Agency 1 Kashmere Gate KG 220 kV Mandaula Kashmere Gate NDPL Rithala RL 66 kV Bawana Rohini I NDPL 2 New Delhi ND 66 kV GTPS GTPS BYPL 3 Dwarka DW 66 kV Bamnauli Pappankalan II BRPL Subhash Nagar SN 66 kV Bamnauli Pappankalan I BRPL Indraprastha IP 66 kV GTPS GTPS BYPL DMRC is building the following Corridors as part of DMRC- Phase II Project. Sr. No. Corridor Ref. Name of Corridor Remarks RO Shahdara-Dilshad Garden IN Indraprastha-New Ashok Nagar via Yamuna Bank YA Yamuna Bank-Anand Vihar MO Vishwa Vidyalaya-Jehangir Puri IM Inderlok-Mundka M3 Central Secretariat-Green Park M4 Green Park-Ambedkar Colony GE Ambedkar Colony-Sushant Lok (Gurgaon) NE New Ashok Nagar-Noida POWER SUPPLY ARRANGEMENT FOR PHASE-II Line No. Name of DMRC RSS Abbre- viation Incoming Voltage EHV Feeder Grid Substation Source of Supply Remarks Location Agency Line2 Ext. Jehangirpuri JP 220 kV 1 Shalimar Bagh NDPL Bawana GSS for 2 nd Feeder yet to be decided 2 None at present Ambedkar Colony AC 66 kV 1 Mehrauli BRPL Bamnauli / Badapur 2 Mehrauli BRPL Sushant Lok SL 66 kV 1 Sushant Lok Sector 52A HVPNL Badshah- pur 2 nd Feeder yet to be provided 2 Sushant Lok Sec. 57 HVPNL Line 3 Ext. Botanical Garden BG 132 kV 1 Noida Sector 45 UPPCL Sector 20 Noida * (220 kV) 2 Noida Sector 45 UPPCL Line 5 Mundka MK 66 kV 1 Kanjhawla BRPL Bawana 2 nd Feeder yet to be provided 2 Mundka DTL Bamnauli/ Bawana Integrating Phase I & Phase II Power Supply Systems 25 kV Feeder from Subhash Nagar TSS to Kirti Nagar-II FP (IM Line) COMPOSITE POWER SUPPLY ARRANGEMENT DRAWING 25 kV Feeder from Line1 OHE to Inderlok II FP (IM Line) KGE / KG MD NDPL IP G T P / N D G T B Y P L ROH / RL BW NDPL NDPL JP SHB / KJW MK BW BRPL MHL / AC BD BRPL BRPL DW BM PKT / B R P L S N P K O / Kirti Nagar FP Inderlok II FP ISBT FP U P P C L B G N T S 4 5 / SL Appendix-I HVPNL S52A / HVPNL S57 / BM LEGEND TRACTION POWER SUPPLY 1. NORMAL POWER SUPPLY ARRANGEMENTS 2. ESTIMATED POWER REQUIREMENT 3. PROJECTED POWER DEMANDS AT DMRC SUBSTATIONS NORMAL POWER SUPPLY ARRANGEMENTS Assuming that all DMRC Traction Substations are healthy and feeding, the zone of feed of every Traction Substation extends upto the Neutral Section (Sectioning Post) on either side of the Substation. A schematic traction power supply diagram, showing the locations of Traction Substations and their zone of feed, under normal conditions of power supply is as below. NORMAL POWER SUPPLY ARRANGEMENTS PRASTHA CHOWK DWARKA SUBCITY SECTOR-9 DWARKA SAKET SUSHANT LOK ANDHERIA MOR HAUS KHAS CENTRAL SECTT NOIDA BOTANICAL GARDEN VIHAR MAYUR NAGAR SUBHASH MUNDKA NJF DEPOT RITHALA INDERLOK-II Kirti Nagar II RAJIV INDRA NEW DELHI (LINE1) KG AZADPUR PURI VIDYALAYA VISWA- JEHANGIR VAISHALI YAMUNA BANK DILSHAD GARDEN SAHADARA AMBEDKAR COLONY SP 2x30MVA 2x30/45MVA 2x30MVA 2x40MVA 2x40MVA UTTAM NAGAR 2x30MVA 2x30MVA 2x30MVA 2x40MVA NAGAR SP KAROL BAGH 25 kV Feeder from Subhash Nagar TSS to Kirti Nagar-II FP (IM Line) SP 2x30MVA 2x30MVA SCHEMATIC TRACTION POWER SUPPLY DIAGRAM SP SP SP SP INDERLOK KANHAIYA 25 kV Feeder from Line1 OHE to Inderlok II FP (IM Line) Appendix 2 Main Ashok Park Lengths of Feed • The following table indicates the approximate Lengths of feed from various TSS, under normal conditions of feed. • These lengths are made use of for projecting the Power requirements now. These lengths may be different from the lengths adopted at the time of making Simulation Studies. The lengths of feeding zones adopted at the time of making Simulation Studies, are made use of for calculating the average power requirement per km based on Simulation Studies.] Length of Feed from various Substations, under Normal conditions of feed Name of Substation Length of Feed (km) Remarks Towards Direction A Towards Direction B Total Kashmere Gate 7.103 9.102 16.205 Rithala 1.410 7.894 8.664 Jehangirpuri 0.070 3.788 3.858 Dwarka 5.625 5.925 11.550 Subhash Nagar 3.584 9.129 12.713 Indraprastha 7.082 15.300 22.382 Botanical Garden 3.285 4.271 7.556 Mundka 0.106 17.499 17.605 ESTIMATED POWER REQUIREMENTS The Power demand at the various Traction Substations, depends upon a number of factors, such as – Lengths of feeding zone – No of trains in the feeding zones – Power drawn by each train, based on its state (whether starting, accelerating, coasting, braking etc) – The profile of track in the zone which is being fed by the TSS. • A precise estimation of power demand can be made only with the help of a suitable computer software, which can simulate the train running, determine the current drawn by each train in the feeding zone, add up the power demands to arrive at the total Instantaneous demand at the Substation and also integrate the power demand over a specified time interval (say 15-minutes). Based on past data records and on thumb- rule calculations, the max power demand per km, can be interpolated for various combinations of train running (8-car, 6-car, 4-car trains at say, 3-min, 4-min, 6-min etc headway). Figures adopted by RITES in the DPR RITES, in their “Detailed Project Report for Phase II Corridors of Delhi Metro”, had adopted the following figures for Peak hour power demand per km of the route, for different train operation plans. Peak Hour Trains and Hourly Traction Power Demand per Km Year Trains per hour Average Hourly Power Demand (MW/Km) Number of Cars per Train 4-Car 6-Car 8-Car 2011 & 2021 10 0.36 0.54 0.72 12 0.43 0.65 0.86 20 0.72 1.08 1.43 Designed 24 0.86 1.30 1.73 AUXILIARY POWER SUPPLY GENERAL DESCRIPTION • The various electrical and electro-mechanical installations in passenger stations are required to be provided with electrical power at 415 V 3 phase. • AMS • 33 kv network • ASS INTERCONNECTION STUDY •GENERAL The object of the interlink between various DMRC Lines is to ensure an emergency supply between the lines, both at 25 kV and 33 kV. Under normal power supply arrangements, the different DMRC Lines are deriving power supply from the following RSS/TSS/AMS, situated in the respective lines. Line 1 Description Power Supply from 25 kV 33 kV 1 Rithala - Dilshad Garden KG Rithala KG Rithala 2 Jehangirpuri – Viswavidyalaya - Central Sectt. - Qutub Minar - Sushant Lok (Gurgaon) Jehangirpuri New Delhi Ambedkar Colony Sushant Lok Jehangirpuri New Delhi Ambedkar Colony Sushant Lok 3 Dwarka Sector 9 – Dwarka Barakhamba Road – Indraprastha – New Ashok Nagar – Noida (including Yamuna Bank – Vaishali) Dwarka Subhash Nagar Indraprastha Botanical Garden Dwarka Subhash Nagar Indraprastha Botanical Garden 4 Inderlok - Mundka Mundka Mundka • The Lines 1, 2 and 3 have more than one Substation and hence, under an Emergency condition, when one of the Substations in the Line, is totally out-of- service, one of the remaining healthy Substations in the Line, will be able to provide the back-up power, both at 25 kV and 33 kV. However, in the case of Line 5, which has only one Substation and is not track- linked with any of the other Lines, Interconnection Links at 25 kV and 33 kV, with other Line/s, are essential and hence provided at detailed below. • Traction Power LINKS – Interconnection Links between Lines 1, 2 and 3 – 25 kV Link between Line 1 and Line 2 – Two additional 25 kV Outgoing bays were established in the KG TSS, to enable two 25 kV Link feeders to be taken off the 25 kV bus bars at KG TSS. These Link feeders were taken to ISBT FP of Line 2 and can be used, if required, to feed 25 kV traction power to Line 2, if New Delhi TSS fails. As a long term measure, it may also be worthwhile to consider adding one more 66 kV / 27.5 kV Traction transformer at KG TSS along with a 66 kV feeder from the GTPS. • 25 kV Link between Line 2 and Line 3 A 25 kV Link had been established between New Delhi TSS (of Line 2) and the R.K. Ashram Marg FP (of Line 3). The Link is made up of a 240 sq mm copper cable, which will be able to safely transfer a power upto 7.5 MVA, from New Delhi TSS of R.K. Ashram Marg FP. •25 kV Link between Line 3 and Line 1 The Link between Line 1 and Line 3, originally envisaged between Rithala TSS (Line 1) and Dwarka TSS (Line 3), was given up and at present an indirect link exists between Line 1 and Line 3, from KG TSS (Line1) to R.K. Ashram Marg FP (Line 3), via the 25 kV Bus bars at New Delhi TSS. However this Link is not useful from technical, as well as, logistical points of view. 2. INTERCONNECTION LINKS WITH LINE 5 – 25 kV Link between Line 5 and Line 3 A Feeding Post at Kirti Nagar II (in IM Corridor) has been established and this FP derives 25 kV single phase power supply from Subshah Nagar TSS (Line 3), via a 25 kV Link consisting of duplicate 25 kV feeders (each feeder consisting of a phase cable 2x240 sq mm copper and a return cable 2x240 sq mm (3.3 kV) copper). •Provisions made in the Design Sr. No. Item Availability of Redundancy 1 Incoming HV Feeders from the Grid Substation to the DMRC Receiving Substation 2 Incoming Feeders provided (except in KG and Jehangirpuri RSS) 2 Traction Transformers 2 Traction Transformers are provided at every Substation. Each transformer is rated fore 100% load at the Substation, one supplying the load and the other remaining as hot-standby. 3 25 kV Outgoing Traction Feeders 4 Outgoing feeders provided at every Substation, each feeder designed to carry the full traction load. Failure of Traction Transformer • Every Substation has 2 traction transformers, each rated for the 100% maximum power demand at the Substation. One transformer supplies the entire load and the other remains as ‘hot-standby’. Hence, failure of one traction transformer at one Substation, does not affect the 25 kV traction power supply to the Traction Overhead Equipment. Failure of 25 kV Feeder/ Equipment • Failure of one 25 kV Traction outgoing feeder or failure of one 25 kV power supply equipment, does not affect the 25 kV traction power supply to the equipment. OVERALL CONTINGENCY POWER SUPPLY PLAN Appendix 3 `1 ^¦· ª·¯® e·` ª·¯® ^® ©¯ `e ¯©+ `^¯® ¯©¦ `^¯® ·1 eª e· ©- ¯ ª·¯® ©- `· e· ® `^¯® ·` - + - +¯ `4¯® ª· ¨¯ - e±±· · V¯ª® e® - e_± ±¯¯`® `- - ©1 `^¯® e© ± e4CÞ-pE Þ- ¯ e4CÞ-pE Ò- . e4CÞ-pE ·4 Emergency Power Supply Plan 1. Line 1 (Rithala-Shahdara-Dilshad Garden) Sr. No. Emergency Conditions Standby Power Supply Remarks 1st Standby 2nd Standby 1A Rithala Fails Kashmere Gate Mundka KG Supply is from KGE GSS (NDPL) RL Supply is from ROH GSS (NDPL) MK Supply is from MK GSS (NDPL) 1B Kashmere Gate Fails Rithala Mundka As a 3rd standby, power can be drawn from New Delhi TSS. 2. Line 2 (Jehangirpuri – Viswavidyalaya-Central Secretariat – Qutub Minar – Sushant Lok) Sr. No. Emergency Conditions Standby Power Supply Remarks 1st Standby 2nd Standby 2A Jehangirpuri Fails New Delhi - If JP fails and at the same time ND is also off, then power can be drawn from KG. 2B New Delhi Fails Ambedkar Colony Jehangirpuri As a 3rd standby, power can be drawn from Kashmere Gate TSS 2C Ambedkar Colony Fails New Delhi Sushant Lok 2D Sushant Lok Fails Ambedkar Colony - 3. Line 3 & 4 (Dwarka-Indraprastha-New Ashok Magar-Noida, Yamuna Bank-Vaishali) Sr. No. Emergency Conditions Standby Power Supply Remarks 1st Standby 2nd Standby 3A Dwarka Fails Subhash Nagar - 3B Subhash Nagar Fails Dwarka Indraprastha As a 3 rd standby, power can be drawn from New Delhi TSS. 3C Indraprasth a Fails Botanical Garden Subhash Nagar As a 3 rd standby, power can be drawn from New Delhi TSS. 3D Botanical Garden Fails Indraprast ha - 4.Line 5 (Mundka-Kirti Nagar-Inderlok) Sr. No. Emergency Conditions Standby Power Supply Remarks 1st Standby 2nd Standby 4 Mundka Fails Subhash Nagar Kashmere Gate AUXILIARY POWER SUPPLY GENERAL As already described above, the normal auxiliary power supply arrangement includes • Two independent 33 kV feeders to feed the ASS’s • Division of the feeders into separate loops deriving feed from different AMS’s. The Schematic Auxiliary Power Supply Diagram as below, shows the division of feeders into separate loops in the various Corridors. PRASTHA CHOWK DWARKA SUBCITY SECTOR-9 DWARKA SAKET SUSHANT LOK ANDHERIA MOR HAUS KHAS CENTRAL SECTT NOIDA BOTANICAL GARDEN NAGAR SUBHASH MUNDKA NJF DEPOT RITHALA INDERLOK-II Kirti Nagar II RAJIV INDRA NEW DELHI (LINE1) KG PURI VIDYALAYA VISWA- JEHANGIR VAISHALI YAMUNA BANK DILSHAD GARDEN SAHADARA AMBEDKAR COLONY 2x35/50MVA 2x30/45MVA 2x15MVA 2x15MVA 2x15MVA 2x30/45MVA 2x30/45MVA 2x15MVA 3x15MVA 33 kV Cable connection in Future (after adding one Transformer at Subhash Nagar) 2x15MVA 2x30/45MVA SCHEMATIC AUXILIARY POWER SUPPLY DIAGRAM INDERLOK Proposed 33 kV Cable COnnection Appendix 4 Main Ashok Park THANK YOU POWER SUPPLY INSTALLATIONS OF DMRC