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automation of substation
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Confidential
iCAM SYSTEMS LLPIN SERVICE FROM THE LAST 1 YEAR
SINCE - 2012
Presented By:
Anshul Saxena [email protected] +91-9810160103
Ajay Raina [email protected] +91-9811126243
iCAM Systems LLP
A-43, Ground Floor, Sec-7 Noida-201301
Visit us at http://icamsystems.com
Confidential
SPECIALISED IN
• SUB-STATION AUTOMATION-400/220/66/33/11KV
• ROTATIONAL LOAD SHEDDING SYSTEM
• SCADA SYSTEM - LOAD DESPATCH CENTRE
• SCADA SYSTEM -POWER DISTRIBUTION
• SUB-STATION AUTOMATION-400/220/66/33/11KV
• ROTATIONAL LOAD SHEDDING SYSTEM
• SCADA SYSTEM - LOAD DESPATCH CENTRE
Confidential
PLC
BASED
SUB STATION
AUTOMATION
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A Substation involves two functions:
• Protection
• Operation & Control
Substation Automation -Related Issue
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Automation In a Substation
•Protection - Present Duties
•Monitors Healthiness Of Equipment On Line
•Trips the CB’s On Fault Automatically.
•Fault Annunciation for Operator
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CONTROL EQUIPMENT - Present Duties
• Switch On & Off On Demand - Manual
• Status Indication of Circuit Breakers, Isolators & Other Equipment.
• Manual Logging of Events.
• Fault Analysis based On Manual Log
Substation Automation
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• Existing System Obsolescence
• Electromechanical/Solid State Relay Based Protection
• Expensive to Maintain
• High Downtime
• Calibration a Continuos Process.
• Spares problem-Large Inventory,Availability??
• Manual Data Log,Error/Manipulation Prone
Conventional Substation-Problems Faced
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• DC Leakage in Control Cables-Exposed to environment
• Control Wiring Fault Finding- Highly Skilled Work
• Drawings and Documents Required for Fault Location
• Fault Location is Time Consuming.
• Long Downtime.
• If fault not located change of cable inevitable.
Conventional Substation-Problems Faced (from pre-page)
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Conventional Substation- LIMITATIONS
• No Communication Capability
• No Disturbance Recording
• No Event Logging
• Not Configurable-Dedicated Outputs
• Expensive to Expand,
• Space For Expansion, A Serious Problem.
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Automation The Solution
µ-Processor Control &Communicable Numerical Relays
• PLC based Control system
• Touch Sensitive Operator Screen
• Communicable Numerical Relays
• Communication Interface between PLC-Relays
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Implementation
• In 1998,the then DESU identified a 33/11KV fault-prone
Substation at Shankar Road handling 42MVA power for
Automation
• A Pilot Substation Automation Project was designed
• System was commissioned in February 1999
• The System worked satisfactorily with no failure afterwards.
( Contd….)
Confidential
Implementation (from pre page)
• Four Substations identified on turnkey basis as PLC
based automation Substations at
a) 66/11 KV S/Stn (To be upgraded to 220 KV level)
b) 33/11 KV S/Stn (In Advanced Stage of Commissioning)
c) 33/11 KV S/Stn (In Advanced Stage of Commissioning)
d) 66/33/11 KV S/Stn (Under Erection)
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• Automatic Logging of the Half/Hourly Logs - V & I
• Automatic Voltage parameters maintained
• Automatic Logging of events has Imposed Self Discipline- No
Manipulation
• Modular and Expandable with communication capabilities for
Remote Monitoring and Operation
• Access to Numerical Relays locally/remotely
• Numerical Relay data - a useful tool to diagnose
performance , cause of failure , guides preventive measures
to be taken
Operational Benefits Achieved
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• Panel View is Operator friendly and provides guidance at
the time of Normal/Critical Events Related to Controls
• Panel View Provides same Look & Feel of the
Conventional Control System - Thus Zeroing adaptability
by Operators
• Ease of Maintenance
Operational Benefits Achieved
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Cost Benefit Analysis
Civil Cost
S.No Items Coventional
Sub-Station
(Rs. In Lacs)
PLC Sub-
Station
(Rs. In lacs)
Remarks
1
Civil Works (Item 1 to 4) Boundary wall,yard
development,fencing,levelling
& steel for granty
120.40 120.40
2 Foundation of gantry
Equipment transformer
91.00 91.00
3 Control cable trench 39.20 4.20
4 Control Room building 77.00 49.00
5 Total Cost of Civil Works 327.60 264.60
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Cost Benefit Analysis
Electrical Cost
S.No Items Coventional
Sub-Station
(Rs. In Lacs)
PLC Sub-
Station
(Rs. In lacs)
Remarks
6
a
b
c
Elect. Works (Item 6 to 8) Equipment for 7 bay
Power Hardware i.e. CT,CB,
ISO,PT,Insulators ,Tx.and Bus
material etc.
C&R Board*
Control cable
Sub-total of item 5
414.40
60.20*
7.28
414.40
92.40**
0.7
*Costing of
Rs.43 lacs is
for conven-
tional/electro
-mechnical
relay
481.88 507.50
7 Add Erection, testing &
commissioning etc. as per
DVB schedule Part B
7.266 4.50
8 Total Cost of Electrical Works 489.14 512.00
Total
816.74 776.60
PLC based Sub Station is 5% cheaper than conventional station
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Financial Benefits
• PLC based substation is 5% cheaper on capital cost. It is
more cheaper for larger no of bays.
• Execution cost cheaper by 20%
• Execution of PLC based project requires 20% less time
than conventional station. Hence less supervision cost.
• At least 10% less man-hours for protection and substation
commissioning.
• PLC based substation is requires 40% less space.
• It requires only 10% control cable in comparison to
conventional substation.
• It requires no trenches and no steel trays for control cable.
• Quality of Power Supply Improved
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CONVENTIONAL SUBSTATION
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PLC BASED AUTOMATED SUB STATION
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View
Of
33/11 KV
SHANKAR ROAD
DVB
SUBSTATION
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Configuration Diagram
66/33/11KV SUB – STATION SYSTEM CONFIGURATION
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PLC BASED CONTROL PANEL ROOM
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Existing Control Panel Of Control System
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PV600 BASED CONTROL DESK
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RENOVATED SWITCHGEAR PANEL ADDED WITH NUMERICAL RELAYS
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RENOVATED CONTROL PANEL WITH PLC
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View
Of
66/11 kV
DVB
SUBSTATION
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Configuration Diagram
SYSTEM CONFIGURATION FOR 66/11KV SUB STATION
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Configuration Diagram
SYSTEM CONFIGURATION FOR 33/11KV SUB STATION
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LIST OF SIGNALS FOR S/S
66 kV STATUSCB OPEN
CB CLOSE
EARTH SWITCH CLOSE
CB READY ( SPRING CHG. + SF6 NOT LOW)
CB S/S IN REMOTE POSITION
SF6 LOCKOUT FAULT
ISO 29A OPEN
ISO 29A CLOSE
ISO 29A S/S IN REMOTE POSITION
ISO 29B OPEN
ISO 29B CLOSE
ISO 29B S/S IN REMOTE POSITION
ISO 29C OPEN
ISO 29C CLOSE
ISO 29C S/S IN REMOTE POSITION
TRIP CIRCUIT FAULTY
CB FAILIURE PROTECTION
MASTER TRIP RELAY INITIATED
RELAY OPERATED
RELAY FAIL
AUTO RECLOSE
BUCHOLZ OPERATED
OIL/ WINDING TEMP HIGH
PRV/ SUDEEN PRESSURE TRIP
11 kV STATUSCB OPEN
CB CLOSE
SPRING CHARGED
CB FAILIURE PROTECTION
OVER CURRENT OPERATED
EARTH FAULT OPERATED
CB TEST POSITION
CB IN SERVICE POSITION
DC FAIL
66 kV COMMANDS
CB OPENCB CLOSE
CB LATCH RESET
ISO A OPEN
ISO A CLOSE
ISO B OPEN
ISO B CLOSE
ISO C OPEN
ISO C CLOSE
11kV COMMANDSCB OPEN
CB CLOSE
CB LATCH RESET
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LIST OF METERING PARAMETERS FOR S/S
66 kVAVG PHASE TO PHASE VOLTAGE
AVG RMS VOLTAGE
TOTAL ACTIVE POWER
TOTAL REACTIVE POWER
LINE FREQUENCY
PRIMARY VOLTAGE U1
PRIMARY VOLTAGE U2
PRIMARY VOLTAGE U3
PRIMARY CURRENT I1
PRIMARY CURRENT I2
PRIMARY CURRENT I3
CURRENT L1 PRIMARY
CURRENT L2 PRIMARY
CURRENT L3 PRIMARY
CURRENT L1 SECONDARY
CURRENT L2 SECONDARY
CURRENT L3 SECONDARY
MW TRANSFORMER 1
PF TRANSFORMER 1
MW TRANSFORMER 2
PF TRANSFORMER 2
11 kV CURRENT R
CURRENT Y
CURRENT B
INCOMMER 1 VOLTAGE RY
INCOMMER 1 VOLTAGE YB
INCOMMER 1 VOLTAGE BR
INCOMMER 2 VOLTAGE RY
INCOMMER 2 VOLTAGE YB
INCOMMER 2 VOLTAGE BR
Confidential
AUTOMATED BHEL SWITCHGEAR
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SIMPLICITY OF WIRING
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• ENERGY METER
• NUMERICAL
RELAY
Confidential • FIBRE OPTIC LINK SPAJ RELAY to PLC
Confidential
Confidential •TIME STAMPING MODULE-1ms RESOLUTION
Confidential
•PROTOCOL LINK-FIBRE OPTIC FROM RELAY to PLC
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• TRANSDUCERS & FLEX ANALOG INPUT
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• TOTAL VIEW PLC PANEL IN CONTROL ROOM
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• PANEL VIEW
having TOUCH
SCREEN
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• KIOSK for
HOUSING
RELAY
PANELS
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• RELAY PANEL having NUMERICAL RELAYS
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SUPERVISION RELAYS
Confidential •DISTANCE & LINE DIRECTIONAL RELAYS
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•KIOSK IS LEAST OCCUPIED-FUTURE EXPANSION
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•KIOSK PANEL HOUSING FIELD I / O’s EXPANSION
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•EXPLODED VIEW KIOSK PANEL -FIELD I / O
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•FIELD I / O DIGITAL & ANALOG
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•FIELD I / O DIGITAL & ANALOG LARGE VIEW
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•WIRING FROM CT,CB AND ISOLATOR KIOSK
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VIEW -CONTROL ROOM-SMALL SPACE REQUIRED
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SECOND VIEW -CONTROL ROOM-SMALL SPACE
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SUB STATION AUTOMATION
OBJECTIVE:
SCADA FOR 400 kV GENERATING/ DISTRIBUTION STATION
FEATURES:
•HOTBACKUP
•COMMUNICATION NETWORK REDUNDANCY
•REMOTE COMMUNICATION ON PLCC USING 870-5-101 PROTOCOL
•LINE SYNCHRONIZATION
•METERING INFORMATION
•EVENT RECORING WITH 1ms RESOULUTION
BAYS:
GAS TURBINE 4 NOS
OUTGOING LINES 8 NOS
BUS COUPLER 5 NOS
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PHASE-II MMI SLD DISPLAY
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SUB STATION AUTOMATION
•FLEX I/O’S FOR BAY CONTROLS
HARDWARE USED:
•CONTROL LOGIX IN HOTBACKUP
•DUAL CONTROLNET NETWORK
•CNET PLC-5 & LSM FOR SYNCHRONIZATION
•POWER MONITERS FOR METERING ON ETHERNET
•TIME STAMPING MODULES FOR EVENT RECORDING
•INDUSTRIAL COMPUTERS FOR MAIN & REMOTE LOCATION
•PROSOFT MODBUS & IEC COMMUNICATION MODULE
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Confidential MAIN CONTROL PANEL WITH PLC IN REDUNDENCY
FRONT VIEW REAR VIEW
Confidential BAY CONTROL PANEL WITH FIELD I/O, PM & SOE
FRONT VIEW REAR VIEW
Confidential
BUS SYNCHRONIZATION
PANEL
MAIN CONTROL CENTRE OPERATOR
PANEL
REMOTE CONTROL CENTRE OPERATOR
PANEL
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