remote control equipment - Indian Railways Institute of Electrical ...

More documents

Recommendations

Info

system console and hard and floppy disks along wiht their drives. Watch dogs are provided for monitoring the health of the computer system. In case of failure of one omputer system, the standby takes over automatically. Two data-logging printers, one on-line and other as standby, are provided, both being connected to the same online computer system. In case of failure of one printer, the other printer automatically takes over. Man-Machine-Interface : Work Stations Two work-stations, one for each of the two operators each consisting of two semi-graphic colour Visual Display Units (VDUs) and a key-board are provided at the RCC. The key board contains both functional keys for operations that are repeated frequently and alpha-numeric key for input of numerical data and text. Both workstations are connected to the same on-line computer and mee the following requirements: (i) Normally control pre-defined and physically demarcated sections. (ii) In case of complete outage of one workstation. all of its functions can be transferred to the healthy workstation, so that normal operations can continue. (iii) Normally one VDU is on line and the other acts as standby at each work station. However, if so needed, it is possible to have both VDUs of each work station on lines simultaneously, either of the two VDUs being used for viewing diagram for telecontrol purposes and the other for viewing alarm, on-demand trend curves, histograms or any other data. 7.3.8 Mimic Diagram Board (MDB) A mimic diagram board and its associated mimic dnver is provided at the RCC. The MDB depicts the traction power supply diagram, indicating the energize/de energize condition of the sub-sectors of the catenary. status of the interuptors and CBs at TSS & FP, SSP and SP Unlike in the Conventiona ! Mimic Diagram Board used in RCCs prior introduction of SCADA system (See para 20403) all contrll Operations are camed out from the key board(s) provided at the work stations(s) The Mimic Diagram Board’s sole purpose is. therefore to give an overa.” view of the traction power wupply, system to the operator Size of the MDB is therfore very much smaller. It is the intention to do away with the MDB altogether since the system can be viewed in the VDUs 7.3.9 Annunciations Controlled Station “Remote Station Defective” is annunciated by a LED Master Station The following annunciations by LEDs are provided on the MDB i) Main System “ON” ii) Standby System “ON” iii) Main System Defective. iv) Standby System Defective v) Main UPS Failed vi) Standby UPS Failed vii) UPS battery low (below 90% of nominal voltage) viii) 415 V, ac, 3 ph, supply to UPS failed 135
7.3.10 SCADA Software The operating system used is suitable for multi-user, multi-tasking, net working and real time applications. 7.3.11 VDU Display The application software supports a large number of versatile semi-graphic coloured displays for issuing telecommands, blocking/deblocking the controlled points. viewing alarm listing, event listing or for carrying out special functions. For details of these displays. manufacturers Operating Manual may be referred to. Calling any of the VDU displays is by simple keyboard operation, with pre-defined options available for the order and manner in which displays are called. 7.3.12 Transmission and Coding System The master station equipment normally scans continuously all the RTUs in a pre-defined cyclic sequence to update the equipment status, alarms, events and measurands. Exchange of information between Master Station and RTUs takes place on interrogation by master followed by reply from RTU. The communication technique is based on Digital Address Time Division Multiplexing. Every data exchange is based on well defined transmission protocol. Each transmitted contains sufficient parity check bits do detect transmission errors. 7.3.13 Historical Data Storage The SCADA system is designed to cater for historical data storage of traction power supply data for a period of one year. This includes. i) All alams / events / -- of controlled stations and all system alarms ii) Day wise stronge of average feeder current and voltage dating the day maximum demand maximum and minimum feeder voltage in the 25 KV side. total number of operations of feeder protective relays viz OCR. DPR and WPC relays CB trippings and maximum and minimum OHE voltage on both sides of the neutral section A memory capacity of 40 MB is provided for this purpose in the hard disk with provision for further expansion of the memory as required. 7.3.14 UPS and Batteries at Rcc Dual Stand alone UPS System of adequate capacity to supply 240 V and 50Hz single phase supply to the SCADA system at Master Station is provided. Both the UPS work in parallel sharing the load. In case of failure of one. the entire load is automatically taken over by the healthy UPS without affecting the working of the system. In case of both the UPS at the same time. the load of SCADA equipment is directly connected to input mains through a static switch without any break. A single battery is provided with both the UPS with adequate Ah capacity to provide 2 h supply to various equipments in case of failure of input 415 V ac 50 Hz supply. 7.3.15 Remote Terminal Unit (RTU) The RTU is microprocessor based and includes its associated digital input/output modules. alanninput modules. analog input modules. watchdog transducers. memery modules. interposting relays. summation. CTs power supply unit(s). surge arrestors and other items necessary for its proper working. 7.3.16 Storage of Events and Alarms All changes (one or more) in the status of the CBs/interruptors / motor-operated isolators and alarms that may occur between consective polilngs are stores by RTU until they are reported to the master station. This is to eliminate any loss in reporting to the master station due to 136
Page 2:
PREFACE The book on "Power Supply I
Page 5 and 6:
However transformers of capacity 13
Page 7 and 8:
3. To keep the unbalance on the 3 p
Page 9 and 10:
1.2 POWER SUPPLY FOR SIGNALLING 1.2
Page 11 and 12:
locomotives and Electric Multiple U
Page 13 and 14:
2.0 Supply System 2. POWER SUPPLY F
Page 15 and 16:
figures. This charge should be real
Page 17 and 18:
2.4 Scrutiny of Bills have a bearin
Page 19 and 20:
c) Procedure to be followed in case
Page 21 and 22:
In the territorial setup one Subord
Page 23 and 24:
3.2.3 Over load Capacity of Tractio
Page 25 and 26:
B. Insulation resistance will conti
Page 27 and 28:
3.3. GUIDING NOTES ON MAINTENANCE 3
Page 29 and 30:
f) Fully push home the wedges betwe
Page 31 and 32:
eakers/interrupters should also be
Page 33 and 34:
A detail history of every battery s
Page 35 and 36:
light or bluish grey according to a
Page 37 and 38:
(e) Overhaul, bench tests and calib
Page 39 and 40:
3.5. FORTNIGHTLY MAINTENANCE 3.5.1.
Page 41 and 42:
obstruction and also if the shock a
Page 43 and 44:
2. Test a sample of oil for BDV. 3.
Page 45 and 46:
3. Check if the terminations of the
Page 47 and 48:
Fortnightly Schedule: a) Drain wate
Page 49 and 50:
d) Measure the IR between auxiliary
Page 51 and 52:
TRACTION DISTRIBUTION SCHEDULE OF M
Page 53 and 54:
3.0 Inspection of Traction Sub-stat
Page 55 and 56:
4.0 Switching Stations a) Switch Ya
Page 57 and 58:
SI. No . APPLICATION AND INTERPRETA
Page 59 and 60:
2.2 Oxidation Carbondioxide is the
Page 61 and 62:
3.4 Pattern of generation of gases
Page 63 and 64:
TABLE - I SOLUBILITY OF DIFFERENT G
Page 65 and 66:
TABLE V ROGER'S METHOD OF DIAGNOSIS
Page 67 and 68:
1.1 Schedules MAINTENANCE OF SF6 CI
Page 69 and 70:
Point / Location Tripping Mechanism
Page 71 and 72:
1.0 General Annexure 3.05 MAINTENAC
Page 73 and 74:
1.5 Detailed Check Checking shall b
Page 75 and 76:
DESIGN ASPECTS OF TRACTION SUBSTATI
Page 77 and 78:
• Characteristics of the locomoti
Page 79 and 80:
considerations enlisted in para 4.0
Page 81 and 82:
xii) Load losses 135.0 kW xiii) Cur
Page 83 and 84:
item Nominal System Voltage 66kV 11
Page 85 and 86:
20 1250 1600 2000 245 31.5 1250 160
Page 87 and 88: i) Three post, centre post rotating
Page 89 and 90: etween live parts and different pot
Page 91 and 92: 4.11.5 Design of grounding system 4
Page 93 and 94: 4.12.2 BIL of various equipments us
Page 95 and 96: (d) High speed inter tripping relay
Page 97 and 98: The relay continuously monitors the
Page 99 and 100: SULFUR HEXAFLUORIDE(SF6) GAS 96 ANN
Page 101 and 102: 5.0 POWER SUPPLY SYSTEM PROTECTION
Page 103 and 104: any one of the two sub-staion throu
Page 105 and 106: fault relay (132KV&25KV side) 4. ID
Page 107 and 108: will be supplied to the successful
Page 109 and 110: detected by normal distance protect
Page 111 and 112: 108
Page 113 and 114: 110
Page 115 and 116: 112
Page 117 and 118: 114
Page 119 and 120: 116
Page 121 and 122: 118
Page 123 and 124: 120
Page 125 and 126: Just as the requirements of supervi
Page 127 and 128: The use of hermetically sealed comp
Page 129 and 130: The configuration used in Railway S
Page 131 and 132: This may be accomplished by several
Page 133 and 134: A typical example of commonly used
Page 135 and 136: 7.2.6.2The above sequence of messag
Page 137: 7.3 SCADA EQUIPMENT 7.3.1 General T
Page 141 and 142: systems are different, the basic fe
Page 143 and 144: 140
Page 145 and 146: To combat interference, co-ordinate
Page 147 and 148: e = Er / R were introduced in the v
Page 149 and 150: It is seen that even if the lines a
Page 151 and 152: Fig. 8.3 Fig. 8.3 contains a family
Page 153 and 154: Typical Rail Current Distribution F
Page 155 and 156: 8.8 SUPPRESSION OF INTERFERENCE AT
Page 157 and 158: Magnetizing current is required to
Page 159 and 160: REGULATION FOR ELECTRICAL CROSSING
Page 161 and 162: Kc is cable screening factor and it
show all

remote control equipment - Indian Railways Institute of Electrical ...

Create successful ePaper yourself

Delete template?

Save as template?