- RSP Power System operates at 132kV and is maintained by the Power Distribution Department. It sources power from two captive power plants and an external grid. - The Power Distribution department is responsible for supplying continuous and adequate power to all consumers within acceptable voltage and frequency levels. They operate and maintain the power infrastructure and coordinate with suppliers and consumers. - RSP has two internal captive power plants and sources external power from the grid. It has an average power consumption of 180MW. The Power Distribution department has various equipment like switchyards, substations, transformers and monitors power through a SCADA system. Islanding systems allow isolation of power units and compatible loads in case of grid disturbances.

1. RSP POWERRSP POWER
SYSTEMSYSTEM

2. RSP Power SystemRSP Power System
• At present RSP Power System is 132kV grade
• It is maintained by Power Distribution Department
• PD has elaborate Power Network to cater to Plant
• RSP has two Captive Power Plants – CPP1, CPP2
• Power contract with GRIDCO at 132kV for 100 MVA
• High redundancy of Power equipment for s/d, Mtc
• GRID as well as Plant system is more robust now
• After Modernization, System will go to 220kV with
increased Demand & consumption

3. POWER SYSTEMPOWER SYSTEM

4. Power DistributionPower Distribution
ResponsibilityResponsibility
• To supply continuous and adequate power to all
consumers within acceptable voltage & frequency
• V => -10 to +6 % & Freq => -3 to +3%
• To operate & maintain all the involved
infrastructure & equipment (with P.D.)
• To co-ordinate with our suppliers & consumers
• Envisage improvements in System
• Procure Power related equipment as per needs
• Maintain SCADA System
• Maintain Power Plant Islanding System
• Maintain Street & Building lighting

5. RSP POWER SUPPLIERSRSP POWER SUPPLIERS
INTERNAL:
a) CPP-I
b) CPP-II (NSPCL)
EXTERNAL:
GRIDCO (OPTCL formerly called
OSEB)

6. INTERNAL POWER SUPPLIERSINTERNAL POWER SUPPLIERS
CPP-I:
• Capacity – 4 TA X 25 MW = 100 MW
• TA # 2, 3, 4 & 6 (All in operation)
• Generating at 6.6kV & Stepping up to 33kV before
use
• Mostly supplying to critical loads in I & S zone
• Supplying to Power Distribution at 33kV as well as
at 6.6kV
• Acts as Air Blowing Station for Blast Furnaces also
• Generation ~ 40 – 50 MW
• Internal consumption ~14 MW
• Commissioned with Steel Plant
• All feeders from CPP-I (33kV & 6.6kV) are cables

7. INTERNAL POWER SUPPLIERS…INTERNAL POWER SUPPLIERS…
CPP-II:
• Capacity – 2 Units X 60 MW = 120 MW
• Units-1 & 2 (Both in operation)
• Generating at 11 kV & Stepping up to 132 kV
before use
• Supplies all Power to Power Distribution at
132kV – 2 lines to MSDS-III switchyard
• Not having dedicated loads with CPP-II
• Generation ~ 115-120 MW
• Internal consumption ~12 MW
• Commissioned in 1987-88
• All 132kV feeders are overhead lines

8. EXTERNAL POWER SUPPLIEREXTERNAL POWER SUPPLIER
GRIDCO/WESCO:
• Supplying Power to RSP thru 2 Nos. 132kV lines
at MSDS-II & 1 No. 132kV line at MSDS-III
• RSP Contract is for 100 MVA (At 132kV)
• Normal drawl of Power is 15 – 30 MVA
• Unit Charge per Unit is – Rs. 2.90
• RSP pays for 80 MVA as Demand Charge @ Rs.
2 Lac i.e. Rs. 1.6 Cr.
• Max Demand w.r.to Peak/Off Peak period has
Rs. 2/4 Lac rate - Peak (6:00 to 22:00) & Off
Peak (22:00 to 6:00)
• Drawl Power Factor below 0.9 attracts PF penalty
• Drawl PF above 0.97 gives PF incentive
• All 132kV feeders are overhead lines

9. Our ConsumersOur Consumers
• All the Departments & Shops of RSP
• Steel Township
• Fertilizer Department (Now only Township - 2
MW)

10. Typical Power ConsumptionTypical Power Consumption
• RSP – 180 MW (Avg) Peak – 220 MW
• Township – 22 MW (Avg) Peak – 32 MW
• Fertilizer – 2 MW (Avg)
• Fluctuating Loads – HSM, LHF-1, LHF-2,
VAR, PM, TM

11. PD Equipment BasePD Equipment Base
• 132kV Switchyards – 2 Nos.
• 33kV Switchyard – 3 Nos.
• 33kV Indoor Substns – 7 Nos.
• 11kV Substns – 3 Nos.
• 6.6kV Substns – 90 Nos.
• LT Substations – 150 Nos.
• HT Breakers – 1500 Nos.
• Transformers – 650 Nos.
• Compressors – 25 Nos.
• Battery & Charger Sets – 60 Nos.

12. PD Equipment Base…PD Equipment Base…
• Capacitor Banks – 15 Nos.
• High Mast Towers – 42 Nos.
• Street Lights – 1045 Nos.
• Buildings – 80 Nos.
• 132 kV Overhead Lines – 12 Kms
• 11kV Overhead Lines – 18 Kms
• Cable Tunnels – 12 Kms
• Cables (33kV) – 300 Kms
• Cables (6.6kV) – 2000 Kms
• HT Motors (TPH) – 15 Nos.
• 6.6kV DG Sets (TPH) – 4 Nos.

13. Power Distribution SectionsPower Distribution Sections
• Operation - Round the Clock (Substn & Sw. Yards)
• Switchyard - MSDS-2, MSDS-3, Pipe Plants, DWP
• Rolling Mill - RM1, RM2, HSM, PM, TM, SSM, WS, CRM
• Iron & Steel - BF, GCP, SMS1, CCM1, LHF1, CCD, SINT, CO
• Modernization - TOP2, SP2, CCM2, OBBP, BOF2, CP2, TPH
• Cable & Tunnel
• SCADA - SCADA, SAS, Energy Acctg., Controls
• Lighting - Street, Building, High Mast, Semi HM
• Planning

14. What is SCADAWhat is SCADA ?
Supervisory
Control
And
Data
Acquisition

15. SCADA ComponentsSCADA Components
• Master Station
• RTU (Remote Telemetry Unit)
• Communication
• Transducer (For field data) &
• Equipment wiring for Status sensing

16. Typical Power DATATypical Power DATA
• Analogue – MW, MVar, KV, Amp, Freq, PF,
MVA, MWH , DC Voltage etc.
• DIGITAL – CB, Isolator, Switch, Relay,
Earth Switch, Alarm etc.
(Bi-State)

17. SCADA SCREENSSCADA SCREENS

18. SCADA SYSTEMSCADA SYSTEM
• Depiction of real time Data with Mimic Diagram
• Better utilization of human resources
• Avoiding of Mal-operation
• Faster restoration of normalcy
• Quick analysis of disturbance
• Avoidance of recurrence
• Systematic recording of event
• Optimized information sharing
• Better planning of maintenance jobs
• Auto Decision

19. A Substation SLDA Substation SLD

20. Facilities from PD SCADAFacilities from PD SCADA
• Display of Single Line diagram of s/s with
analogue/digital information
• Instantaneous Power consumption of all
important consumers
• Hour/Shift/Day/Month/Year consumption report
• Hour/Day Maximum/Minimum Data
• Current Trend @ 5 Sec for 10 Hours
• Historic Trend @ 1 Min (Max/Min/Avg) for 1
Month

21. All Consumers Power DisplayAll Consumers Power Display

22. Important Substation SLDImportant Substation SLD

23. Facilities from SCADA contd.Facilities from SCADA contd.
• Alarm recording
• Alarm sorting- RTU/Point wise
• Maximum Demand Recording/Alarm
• Data Freeze
• Dual Server with smooth Auto-changeover
• Remote Terminals
• Communication to C-DAC/Sun System
• User friendly

24. Rolling Mills MW TrendRolling Mills MW Trend

25. Facilities from SCADA contd.Facilities from SCADA contd.
• Alarm priorities
• Audible Alarm/Voice messages
• Digital Output i.e. Control
• Mimic Display
• Programmer/Engineer/User levels
• Flexible System – Future expansions
• Retrieval of old reports

26. Daily Morning ReportDaily Morning Report

27. RSP Power SCADA factsRSP Power SCADA facts
• Covers 60 HT Substations
• Has nearly 3100 Digital Points
• Covers 1250 Analogue Points
• Has nearly 230 Dynamic Pictures
• Energy Reports
• Maximum Demand
• Trends
• User friendly

28. User FriendlyUser Friendly

29. IslandingIslanding
Deliberate isolation of a running Unit along with
its compatible loads in event of disturbance in
GRID in order to save the Unit & Loads from
Tripping & subsequently synchronizing the Unit
when GRID conditions are normal. For isolation
from GRID, certain Breakers/Bus-couplers need
to be tripped once abnormal GRID conditions
are sensed by Islanding Relay

30. Islanding benefitsIslanding benefits
• Units tripping is avoided
• Disturbance to Plant/ Shops is avoided
• Loss of production/ Damage to sensitive loads
avoided
• Purchase of costlier power is avoided
• Overshooting of Maximum Demand is controlled
• GRID dictate in case of Crisis is not required
• Subjecting Loads to Grid disturbances is
avoided
• Unit Re-starting cost is avoided
Thus a Successful Islanding is WIN-WIN situation

31. Islanding System at CPP-IIslanding System at CPP-I
• CPP-I is having Islanding Scheme since inception as
given by Siemens AEG
• An Uv/Uf Electro-Mechanical relay senses Islanding
• This type of Uv/Uf Relay provided at all 3 Sections
Bus-Couplers
• Load compatibility is reviewed by CPP-I & as per
system adjusted
• There is one point Isolation i.e. thru Sec-2 B/C
• The CPP-I Islanding is always successful
• The settings are: U/V – 82.5%, U/f- 47.6 Hz, O/f –
52.5 Hz
• If CPP-II is Islanding, then CPP-I Islanding is must
• During Synchronizing, first CPP-II synchronizes With
GRID & then CPP-I synchronizes with this combined
system

32. Islanding System at CPP-IIIslanding System at CPP-II
• CPP-II Islanding System conceived in 1989-90 after
Grid disturbances increased in those days
• Islanding system modified many times
• Single Unit Islanding is more successful
• Double Unit Islanding has mixed success rate
• Load monitored jointly by CPP-II & Power Distribution
• Isolation is at multiple points as RSP network is mesh
network
• With Islanding, fluctuating loads have to be tripped
• There are elaborate Islanding scheme panels at
CPP-2, CPP-1 ,RM-1, RM-2, MSDS-2, LBSS-1,
MSDS-3
• At present SU & DU Islanding is sensed at MSDS-2

33. Thank You!