Introduction:-This power generation is situated at ashraf nagar ,Gorakhpur,uttar Pradesh,India. At here lines is distributed at various part of the city. Which can be used electricity in emergency situations and it can be provided in emergency to the other situations. The lines are distributing electricity Ahmad nagar, , dewarya, ashraf nagar, maharajganj and gorakhpur with the help of 66MVA and 40MVA step up/step down transformers. Those supplies are transmitted to various areas, feeders with help of O.C.B and isolators. There is a capacitor bank at 132 KV ,33 KV and 11 KV Bus bar which is used for improving the power factor and bus bar voltage. I want to create the Power sector in the future. I want you to like my page, so that in the future I teach my Power zone. Has not started it yet. Further it is my wish to make. Founder
S.M.M.Qadri
C.B:- circuit breaker is a self-operated switch which is used for making and breaking the circuit in requisite condition. These normal and abnormal condition in which circuit are designed for operation are called requisites condition
i.e. following condition for current and apparent power in which device can be operated.
1. Fault condition
2. Lead condition
3. Magnetizing current condition of transformer.
4. Charging current condition of cable.
5. No load condition. Duties of circuit breakers: - Main duties of circuit breakers are as follows:
I. All the current follows in it medium without overheating. It breaks and makes the circuit in the pressures and absent of normal load current. III. At abnormal magnitude caused by over load current and short circuit current for which it is designed it breaks the circuit in very less time and carefully by automatically operation. Classification of circuit breakers: - Circuit breakers are classified as following:
A. According to voltage
I. Low voltage circuit breakers
II. High voltage circuit breakers
B. According to capacity(KVA,MVA)
I. Low capacity circuit breakers
II. High capacity circuit breakers
C. According to insulating medium between the electrodes. Air circuit breakers
II. Oil circuit breakers
III. Water circuit breakers
IV. Hard gas circuit breakers
V. Vacuum circuit breakers
VI. SF6 circuit breakers
i. Air circuit breakers :- air circuit breakers are of three types:
a) Simple air circuit breaker
b) High capacity circuit breaker
c) Air blast circuit breaker
ii. Oil circuit breakers :- these are two types:
a) Bulk oil circuit breakers
b) Minimum eril circuit breakers
These are used so many circuit breakers at this transmission substation such as air blast circuit breakers, oil circuit breakers, vacuum circuit breakers etc. At 33kv line and bus bar air blast and SF6 gas circuit breakers are used. At 132KV lines and bas bar ABCD are used and 33KV lines vacuum circuit breakers, oil circuit breakers, SF6 circuit breakers are used.
