Download - Training report on 400 kV GSS
SUMMER PRACTICAL TRAINING REPORTAT
400kV GRID SUB-STATION(HEERAPURA, JAIPUR)
SUBMITTED TO:-DEPARTMENT OF ELECTRICAL ENGINEERINGJECRC, JAIPUR
SUBMITTED BY:-PUNEET MANGHANI13EJCEE080BATCH: B-1
INTRODUCTION
Electric power is generated, transmitted and distributed in the form of AC. The electric power produced at the power station is delivered to the consumers through a large network of transmission and distribution.
SUBSTATION
Main tasks of sub-station
Fault analysis Voltage control Controlling the exchange of energy Protection of transmission system Reliable supply
ABSTRACT
400 kV INCOMING FEEDERS BASSI- 1 BASSI- 2 MERTA HINDOUN CITY 200 kV OUTGOING FEEDERS SANGANER SEZ PHULERA KTPS
CONTENTS Bus bars Isolators Insulators Circuit breakers Power transformers Control room Potential and current transformers Relays Lightning arrestors Battery room
BUS BARS• An electrical
conductor that makes a common connection between several circuits
Single main transfer scheme
Single bus bar scheme
Double main bus bar scheme
ISOLATORS
• Isolators is a mechanical switch which isolates a part of circuit from system when required.
• Types: i)Double break isolators ii)Single break isolators iii)Pantograph type isolators
INSULATORS• It provides insulation between the conductors
and support and thus prevent any leakage current from conductor to earth.
• Purpose: i)Support ii)Break the current
• Types: i)Pin type insulators ii)Suspension type insulators iii)Strain type insulators
CIRCUIT BREAKER
The main function of circuit breaker: i) It carries current continuously
without heatingii) Opens or close the circuit
when required.iii)It protects the circuit in case
of any fault.
Types of circuit breaker:
Vacuum circuit breaker SF6 circuit breaker Oil circuit breaker Air circuit breaker
Difference between Isolator and Circuit Breaker Isolator is an off-load device while circuit
breaker is an on- load device. Isolator is a switch which is operated manually,
separates the circuit from the power main and discharges the trapped charges in the circuit.
Circuit breaker operates automatically, triggered by electromechanical mechanism inside and are a safety feature for abnormal and voltage in the circuit
POWER TRANSFORMER Transformers are used to transform voltage from one circuit to
another without changing the frequency.
Types of power transformer:
Step up transformer and step down transformer
Single phase transformer and three phase transformer
Electrical power transformer, distribution transformer an instrument transformer
Two winding transformer and auto transformer Outdoor transformer and indoor transformer
LIGHTNING ARRESTER A lightning arrester is a device used on electrical power
systems and telecommunications systems to protect the insulation and conductors of the system from the damaging effects of lightning. The typical lightning arrester has a high-voltage terminal and a ground terminal.
RELAYS
A relay is an electrically operated switch which senses abnormal conditions of electrical circuit and closes its contacts. Many relays use an electromagnet to mechanically operate a switch
BATTERY ROOMA battery room is a room in a facility used to house batteries for backup or uninterruptible power systems.
CONCLUSION
During my two months summer training I got the knowledge about transmission and distribution of the electrical power, about the equipment used, their arrangement and their working.