The document provides an overview of the 110kV Mangad substation. It summarizes that the substation was commissioned in 1976 and has two 12.5MVA power transformers. It has 11 outgoing feeders and receives its main supply through the 110kV TAMG feeder. The document also provides details about the transformer specifications, capacitor bank, battery bank, feeders and safety guidelines for operating personnel.

1. INTUSTRIAL
TRAINING
PRESENTED BY
ABHIJITH M M
ABHIJITH T
DINIL LAL MT
KEERTHANA O
JISHNA MK
110 kV MANGAD
SUBSTATION.

2. INTRODUCTION

3. KERALA STATE ELECTRIC BOARD
LIMITED
• Kerala State Electricity Board Limited – KSEBL is one of the best
power utilities in India and the driving force behind
development of Kerala.
• EL1-6475/56/PW dated 7-3-1957 of the Kerala State
Government, under the Electricity (Supply) Act, 1948 for
carrying out the business of Generation, Transmission and
Distribution of electricity in the state of Kerala.

4. VISION & MISSION
• VISION – KSEB Limited envision to be the best power utility in
india
• MISSION – KSEB Limited mission is to provide quality electricity
to customer
adequately , safely, sustainably at affordable cost

5. POWER MAP OF KERALA

6. GENERATION

7. FUTURE HYDRO
PROJECTS

8. TRANSMISIO
N
• Transmission network, the backbone of any power system enables
transfer of bulk power from the generating stations to the load centers.
• The Kerala grid is presently connected to the national grid mainly
through three 400 kV double circuit lines viz. (1) Udumalpett –
Madakkathara, (2) Thirunelveli – Pallippuram (Trivandrum).
• The Kerala grid has grown considerably during the recent years. We
have as many as 418 Substations spread across the state as on
01.12.2019. Also the total length of our transmission network is
12845.55 C km. The total power transfer capacity of our Substations
stands at 20,933.4 MVA as on 30.09.2019.

9. TRANSMISION SYSTEM-TABLE
(* substation and lines owned by PGCIL)

10. DISTRIBUTION
• The North Malabar Region, with its headquarters at Kannur is
headed by the Chief Engineer (Distribution North Malabar). The
region has a consumer strength of 18,47,694 and consists of 4
Electrical Circles, 8 Electrical Divisions, 29 Electrical Sub
Divisions, and 108 Electrical Sections, as on 31st March 2021.

11. 110 kV MANGAD SUBSTATION.
OUT GOING FEEDER
• There are total 11 out
going feeder
• New 2 out going
feeders are
• Bakklam
• STN AUX

12. TAMG–MGAZ
Incoming Supply
• The main incoming supply to the station is through 110kV TAMG Feeder
from 220kV substation Taliparamba in the case of shutdown at Taliparamba
substation, the supply of this substation can be maintained through MGAZ
Feeder from 110kV Mundayad Substation via 110kv Azhikode Substation.
• The incoming line was coverted in to double circuit [LILO] on 28-02-
2011,Previously it was tapped from AZTA feeder.

13. AN OVER VIEW OF MANGADE SUBSTATION
• The 110kV substation Mangad was commissioned on 1976
August 2, in a land of 6.3acres. It is situated in Kalliasseri
Grama panchayath. It was commissioned with two 12.5MVA,
Crompton Greaves make 110/11kV transformers which is
connected to 11 kV bus. There are also two 10MVAR capacitor
banks. The outlets from the two 110/11kV transformers are
connected to the 11KV Indoor panel in the control room
through the two 11kV incomers. From the 11kV panel, 11
numbers of feeder outlets are taken. The new yard was
constructed in 2000 in that whole equipment except capacitor

15. POWER TRANSFORMER
• Two numbers 12.5 MVA, 110/11KV Transformers are
connected to 110kV bus. There are also two 10 MVAR Capacitor
banks.
• The outlets from the two 110/11KV Transformers are
connected to the 11kV indoor panel in the control room
through the two 11kV incomers. From the 11KV panel, 11 Nos,
feeder outlets are taken including station Auxiliary

16. • Two numbers 125 MVA, 110/11kV Cromption Greaves make Transformers are
installed at Mangad substation. Both Transformers are having OLTC [On Load
Tap Changer] and can put on parallel operation.
• ABB make SF6, Spring charging type circuit Breaker is provided for controlling
Transformer #1 and Areva Make SF6 Circuit Breaker for Transformer #2 at
110kV side. The Circuit Breaker operates on spring charge mechanism and the
spring is charged through a motor.
• If this motor does not operate, the spring can be charged manually. Normally
after closing the Circuit Breaker, the spring will charged automatically, through
the motor by itself. If this do not happens, check the spring charging motor
circuitry. In case of any abnormalities observed, inform Station Engineer.

17. • If the SF6 lockout alarm comes, no operation can be possible,
so the particular Transformer should isolated by opening bus
isolator after affecting a switch off on 110kVbus. Total capacity
of both transformers is 25MVA having maximum current
capacity 1312Amps on 11kV side.

18. FEEDER DETAILS

19. CAPACITOR BANK
• There are two nos of ABB make 110kV capacitor banks of
capacity 10 MVAR each with total capacity 20 MVAR.
• The capacitor bank is located in the old yard with remote
operation from the control room.
• & Capacitor bank is connected with 110kV station bus with a
110kV Single circuit Tap line.
• The operation of Capacitor bank is done with the concurrence
of Sub LD Thiruvanthapuram. Cand rem BATTERY & BATTERY
CHARGER

20. BATTERY BANK
• There are 55 Nos of 2 V, Exide make 200 Ah Planet Type
Battery to provide 110V DC Supply for the Protection system
and for the emergency lighting.
• If any appreciable reduction in total battery voltage is noticed
due to discharge, the charger may be adjusted for boost
charging at higher rate until normal voltage is restored.
• Availability of Dc supply is a must for the operation of
protective system. Any abnormality noticed with the station
battery /charger should be brought to the attention of station
engineer/ Assistant Executive Engineer. Since battery is the
most important equipment in the station which vigils the whole
equipment, most attention to be given, watching the

21. Safety Guidelines For Operating Personnel:
• Aware of safety rule and become safety minded.
• Work safely, orderly and with general care
• Study safety practices, like first aid resuscitations methods etc.
• Have injuries treated immediately.
• Exercise good house keeping always.