- The document provides details of a 132kV grid station project in Rawalpindi for Islamabad Electric Supply Company, including scope of work, contract values, equipment installed, civil works completed, and diagrams of the site layout, single line diagram, and protection relay circuits. Key equipment installed includes two 31.5/40MVA power transformers, four 132kV circuit breakers, disconnect switches, current and potential transformers, and indoor panels. Civil works included foundations, trenches, roads, fencing and a control house building. Diagrams show the layout and protection schemes.

1. Preston University Pakistan Islamabad Campus
 Project Name : 132/11.5kv Grid Station
 Project Submit to : Engr Sir Usman
 Project Submit by : Muhammad Zeeshan Sohail,
Mahmood-UL-Hassan, Saqib Abbasi , Aamir Abbasi

2. Project Name: Design, Manufacture, Supply, Erection, Testing, Comissioning
and Civil Works at 132-kV Grid Station MES, Rawalpindi
Client: Islamabad Electric Supply Company Limited (IESCO)
Street # 40, Sector G-7/4, Islamabad
Consultant: Barqab Consulting Services
(Private) Limited Lahore
Contractor: ALSTOM Grid Pakistan (Private) Limited
House # 05/B, Abu Bakar Block,
New Garden Town, Lahore
Scope of Work: 1). 2 x Line Bays.
2). 2 x 132/11.5-kV, 31.5/40-MVA Power Trafo Bays.
3). 1 x PT Bay
4). Civil Works i.e. Of Switch Yard Area & Control House Building etc
Contract Value: a). Foreign Currency Component USD 1,353,251/-
b). Foreign Currency Component EURO 169,955/-
c). Local Currency Component PKR 92,880,750/-
Briefing Of The Project

3. List of Out Door Equipment Installed
S.
No.
Description/Specification of O/D Equipment Unit Quantity
1
Power Transformer Three Pole 132-kV/11.5-kV, 31.5/40-MVA
(Complete With All Accessories).
Set 2
2
132-kV, 1600A, Three Pole SF-6 Circuit Breakers
(Complete with All Accessories).
Set 4
3
145 kV, 1600A, 20 kA, Three Pole
Bus Disconnecting Switches without earthing switch
(Complete With All Accessories).
Set 5
4
145 kV, 1600A, 20 kA, Three Pole
Line Disconnecting Switches with earthing switch
(Complete With All Accessories).
Set 2
2
132-kV Current Transformers Single Phase
Ratio 1200:600:300, 5-5-5-5A
(Compete With All Accessories).
Set 6
3
132-kV Current Transformers Single Phase
Ratio 200:100, 5-5-5A
(Compete With All Accessories).
Set 6
4
132-kV Potential Transformers Single Phase
Ratio 132/1.7321 kV:110/1.7321 Volts
(Complete With All Accessories).
Set 3
5
132-kV Gantry & Earth Mast Towers
(Complete With All Accessories).
Set 7
6
132-kV Beams Structures
(Complete With All Accessories).
Set 4
7
11-kV Capacitor Bank Having Capacity 7.2-MVAR
(Complete with All Accessories).
Set 2
8
Pad Mounted Auxiliary Transformer
11.5-kV/415-Volts, 200-kVA
(Complete with All Accesssories)
Set 1

4. List of Indoor Equipment Installed
S.
No.
Description/Specification of I/D Equipment Unit Quantity
1
11-kV Incoming Panels, 2500A
(Complete with All Accessories)
Set 2
2
11-kV Bus Coupler Panel, 2500A
(Complete with All Accessories)
Set 1
3
11-kV Outgoing Panels, 630A
(Complete with All Accessories)
Set 16
4
11-kV Capacitor Outgoing Panels, 630A
(Complete with All Accessories)
Set 2
5
Relay Panel RP-4
(As per WAPDA Specifications).
Set 2
6
Relay Panel RP-3
(As per WAPDA Specifications).
Set 2
7
Control Panel CP-50
(As per WAPDA Specifications).
Set 2
8
Control Panel CP-30
(As per WAPDA Specifications).
Set 2
9
Event & Fault Recorder Panel
(As per WAPDA Specifications).
Set 2
10
AC/DC Auxiliary Panel
(As per WAPDA Specifications).
Set 1
11
110-VDC, 5-AMPS Battery Charger
(As Per WAPDA Specifications).
Set 1
12
110-VDC Battery Bank 150-AH
(As per WAPDA Specifications).
Set 1

5. List of Civil Related Civil Works
S.
No.
Brief Description of Works Completed
1 Construction of 132-kV Switchyard Equipment RCC Foundations.
2 Construction of 132-kV Switchyard RCC Cable Trenches.
3 Construction of PCC Transformer Way & Approach Roads.
4 Construction of Switchyard Fence with Gate.
5 Construction of Boundary of Grid Area With Gate.
6
Construction of Double Storey Control House Building
Complete with Electrification and Sanitation System.
7 Construction of Security Guard Cabin.

6. Site Plan

7. Single Line Diagram of the Project

8. General Layout

9. Switch yard Foundation Layout

10. MES Earthing Layout

11. Switch Yard Layout (Sections)

12. Equipment layout in 11kv Switch Room

13. Control Room Equipment Layout

14. MES Lighting Layout

15. O/C and E/F Relay

16. O/C and E/F Protection Relay

17. Differential Relay Circuit Diagram
Directional relay Definition.
Directional relay is the relay that uses the relationship between voltage and current
forming polarization to determine the direction of a fault inside or outside the zone
protection. It operates when a fault lies within its zone of protection and not behind
where the relay is looking.

18. Distance Relay
Distance relay,
The most common form of protection on high voltage transmission systems is
distance relay protection. Power lines have set impedance per kilometer and
using this value and comparing voltage and current the distance to a fault can be
determined. The ANSI standard device number for a distance relay is 21.It is also
called as the impedance relay as it calculates the line fault with the use of the
impedance per meter of the transmission line

19. Capacitor Bank

20. Switch Yard

21. The End