What is a 132/33KV substation?
132/33 KV EHV substation The power from main bus was fed into a 20MVA transformer which stepped the voltage down to 33KV. The power is then fed into a 33KV bus from which different loads were tapped.
What CT is used in 33KV substation?
Oil Filled 33 Kv 33kv Current Transformer, Accuracy Class: 0.2
| Accuracy Class | 0.2, 0.2s |
|---|---|
| Core Type | Wound CT |
| Material | oil filled |
| CT Ratio | 400/1 or as required |
| Rated Voltage | 33 KV |
What is 33KV transmission line?
The 11kV lines are used in residential areas and is what feeds the local transformers, which then distributes power to the buildings in the area. 33kV lines on the other hand involve much higher voltages and are used to distribute power from one small sub-station to another.
What is kV in substation?
of electric supply. This is accomplished by suitable apparatus called Substation. For example, generation voltage (11KV or 6.6KV) at the power station is stepped up to high voltage (say 220KV or 132KV) for transmission of electric power. The assembly of apparatus (e.g. transformer etc.)
Why 11KV 22kv 33kv 66kv?
The reason is something historical. In olden days when the electricity becomes popular, the people had a misconception that in the transmission line there would be a voltage loss of around 10%. So in order to get 100 at the load point they started sending 110 from supply side. This is the reason.
How do you calculate PT ratio?
You can determine the PT ratio by dividing the phase-to-phase voltage, which is 4,160V, by the voltmeter full-scale range, which is 150V. This simple calculation results in a value of 27.7, which you would interpret as an approximate 28:1 ratio.
Why is DC supply used in substations?
The main reason for using DC supply in substation or power stations is to provide a continuous power supply to the control circuit. DC is a reliable source of power supply because it can obtain from batteries. Only a battery can give continuous power supply until it fully discharges.
What is Pi in substation?
PI is a complete range of air-insulated switchgear for the medium and lower segment of primary distribution. It is an economical and environmentally-friendly solution.
What are the parts of 132/33kV substation?
In its most basic form the device consists of three parts: two capacitors across which the voltage signal issplit, an inductive element used to tune the device and a transformer used to isolate and further step- down the voltage. 21. OPERATION AND MAINTENANCE OF 132/33KV SUBSTATION DEPT OF EEE, SKIT.
What is Debagram 132/33/11 kV substation WBSETCL?
OVERVIEW OF SUB-STATION Debagram 132/33/11 KV Substation WBSETCL Introduction:- Debagram substation is a 132/33/11 KV substation under West Bengal State Electricity Transmission Company Limited. Debagram 132 KV substation connected with the grid via 132 KV Debagram-Krishnagar, Debagram-Katwa and Debagram-Amtala double circuit transmission lines.
How is the power transferred from 132kV to 33kV?
We considered incoming power at 132 KV and the power was transferred to main bus through isolator-circuit breaker-isolator combination. The power from main bus was fed into a 20MVA transformer which stepped the voltage down to 33KV. The power is then fed into a 33KV bus from which different loads were tapped.
How many terminals does a 132 33kV power supply have?
OPERATION AND MAINTENANCE OF 132/33KV SUBSTATION DEPT OF EEE, SKIT. Page 8 Fig: 4.3.1 Circuit Diagram of C.V.T The device has at least four terminals, a high-voltage terminal for connection to the high voltage signal, a ground terminal and at least one set of secondary terminals for connection to the instrumentation or protective relay.