ICAM Sub Station

Confidential

iCAM SYSTEMS LLPIN SERVICE FROM THE LAST 1 YEAR

SINCE - 2012

Presented By:

Anshul Saxena anshul@icamsystems.com +91-9810160103

Ajay Raina ajay@icamsystems.com +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

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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….)

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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

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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

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Confidential •TIME STAMPING MODULE-1ms RESOLUTION

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•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

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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

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BUS SYNCHRONIZATION

PANEL

MAIN CONTROL CENTRE OPERATOR

PANEL

REMOTE CONTROL CENTRE OPERATOR

PANEL

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