SPECICATION NO. ETI/PSI/144 (12/91) SPECIFICATION FOR ... - rdso

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Specification No. : ETI/PSI/144 (12/91) SUPERVISORY CONTROL AND DATA ACQUISITION (SCADA) SYSTEM FOR 2x25 kV A.T. TRACTION POWER SUPPLY 1.0 Scope 1.1 This specification applies to the design, manufacture, supply, erection, testing and commissioning of SCADA system to enable the Traction Power Controller(TPC) or operator, to control from a central place called Remote Control Centre (RCC), the switching operations of the equipments at traction sub-stations and switching stations (hereinafter called "controlled stations"), to monitor the status of the equipments and to collect and store information and data relating to the overall traction power supply to the 2X25 kV overhead traction lines. 1.2 The SCADA equipment shall be based on the state-of-the-art technology. The equipment at RCC, here after called as master station equipment, shall include dual main mini-computer(s) system with sufficient semi-conductor RAM main memory, high speed computer to computer communication link, system consoles, man-machine interfaces through color VDUs and key-boards, front-end processors, modems, data logging printers, watch dogs, floppy disks and hard disks along with their drives, switchover unit for switching over from main to standby computer or vice-versa, mimic driver and mimic diagram board (MDB), UPSs with battery, console desks and surge arresters. 1.2.1 As an alternative to the master station built around minicomputers, tenderer shall also quote for a master station built around dual main micro-computers. 1.3 The SCADA equipment at controlled station, hereafter called as Remote Terminal Unit (RTU), shall be micro-processor based and shall be compatib1e with the master station equipment• It shall be complete in all respects including central processing unit with watch dog, digital input/output modules, alarm input modules, analogue input modules, transducers, memory, interposing relays, summation current transformers, power supply units, surge arresters and modem. 1.4 The SCADA equipment at RCC and at controlled stations shall be complete with all units, parts and accessories necessary for their efficient operation and all such units, parts and accessories shall be deemed to be within the scope of this specification whether specifically mentioned or not. 2.0 Service conditions 2.1 The SCADA equipment may be installed any where in India. The equipment at RCC shall be installed indoors. Air-conditioning may be provided, if convenient, or else filtered air will be blown through to cool the equipments. 2.2 The SCADA equipment at controlled stations shall be installed inside track side cubicles and subjected to vibrations on account of running trains on the near-by railway tracks. These cubicles will not be air-conditioned and are liable to exposure to polluted atmosphere.
2.3 Atmospheric Conditions Maximum average ambient temperature Minimum ambient temperature Relative humidity … 45 deg C … 0 deg C ... 100 % The locations at which the equipment is to function shall be subjected to dust storms in summer, and to heavy rains and lightning during monsoon. 2.4 The SCADA system is intended for use at altitude not exceeding 1000 metres. 2.5 Voltage and frequency 2.5.1 At RCC : 415 V, 3 phase 50 Hz supply from the State Electricity Board shall be made available by the Railways. The voltage may vary between +10% and -15%, while the frequency between +3% and -3% of the nominal values. The master station equipment shall be suitable for satisfactory operation throughout these variations. 2.5.2.1 240V, single phase 50 Hz a.c.supply from the auxiliary transformers provided at controlled stations shall be made available by the Railways. Due to variation in the catenary voltage(25kV). The single phase voltage may vary between 180 V and 265 V. The frequency may vary between +3% and -3% of the nominal value. The RTU equipment shall normally operate off this a.c. supply and be suitable for satisfactory operation throughout variations in voltage and frequency. 2.5.2.2 Operation (open/close) of circuit breakers, interruptors and other equipments is carried out at 110 V d.c. For this purpose necessary battery charger shall be provided by the railways. 2.5.2.3 In case of failure of a.c. supply at the controlled station, the RTU shall automatically operate off the 110 V d.c. supply. The d.c. voltage may vary between +l0% and -15% of the nominal value. The RTU shall be suitable for satisfactory operation throughout this variation. 3.0 Governing specifications 3.1 The SCADA equipment and component thereof shall, unless otherwise specified, conform generally to the latest editions of the Bureau of Indian Standards specification mentioned below: IS:590 Fixed paper dielectric capacitors. IS:1554 PVC (Heavy duty) insulated electric cables. IS:1652 Stationary cells and batteries, lead-acid type with plants positive plates. IS:1765 Direct current Potentiometers.
Page 1: SPECIFICATION FOR SPECICATION NO. E
Page 5 and 6: phases of the 220 or 132kV, three p
Page 7 and 8: main control and relay panel, 240V
Page 9 and 10: indicated by operation of Buchholz
Page 11 and 12: - 11 - ―PT fuse fail‖ indicatio
Page 13 and 14: - 13 - 5.8.8. The Railways will tap
Page 15 and 16: - 15 - (ii) There shall be two data
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Page 19 and 20: equipments status including manuall
Page 21 and 22: shall confirm in the offer that the
Page 23 and 24: 6.1.6 Data-logging printers - 23 -
Page 25 and 26: - 25 - 6.2.3.2 The ac supply will h
Page 27 and 28: 6.4 Equipment capacity - 27 - 6.4.1
Page 29 and 30: - 29 - 6.5.2 Whenever the number of
Page 31 and 32: - 31 - channels and other such aids
Page 33 and 34: e so engineered that they are clear
Page 35 and 36: 6.12.4.4 The system shall also take
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Page 45 and 46: - 45 - ANNEXURE-I TYPICAL REQUIREME
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c) Number of controlled stations th
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40. Level meters ( dB Meter) i) Mak
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ix) Rated accuracy limit factor 15
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SS -TRACTION SUBSTAION. TP -AUTO TR
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SPECICATION NO. ETI/PSI/144 (12/91) SPECIFICATION FOR ... - rdso

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