What is the need of 132/33KV substation?
132/33 KV EHV substation 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.
What are the equipments used in substations?
The following equipment are installed in distribution substations:
- Distribution Transformer.
- Circuit breaker.
- Lightning Arrester.
- Air Break (AB) switches / Isolator.
- Insulator.
- Busbar.
- Capacitor Bank.
- Earthing.
What is routine maintenance of substation?
In simple terms, substation maintenance is a regimen of regular preventative checks and actions carried out to ensure substations are kept in good working order. This process typically consists of a series of stringent visual and physical inspections and actions carried out according to a set schedule.
Are responsible for the operation and maintenance of 220 132 KV transmission lines for traction substation?
Supply utility
Supply utility is responsible for owning, installation, operation, maintenance of /100/132/220 kV transmission line, grid substation upto 25 kV outgoing terminal.
Is 33KV a transmission voltage?
In a transmission line, if three pieces of disc insulators per phase are connected, then the KV of the transmission line is 33KV. For the 33KV transmission line, generally, Four Pole structure is used. Sometimes double pole structure also used.
What does 33KV mean?
33 kV double-circuit line: 33 single-circuit wood pole: 33 kV lines are either carried on small lattice steel pylons or on wood poles. There are many different variants of lines design but they all produce roughly similar fields.
What is preventive maintenance in substation?
Preventive Maintenance (PM) system consists of a routine maintenance action taken in a planned pattern based on the average breakdown rates of the system components or equipment [1]. They are actions taken to improve the condition of equipment for optimal performance and prevent unintended failure or breakdown.
What is meant by SP and SSP in traction system?
There will be 25 to 30km interval between TSS and the sectioning and paralleling post (SP). And, there will be sub-sectioning and paralleling post (SSP) in the midway of the SP and TSS. (2) Connection Method of Traction Transformers.
What is meant by SP & SSP in traction system?
Sectioning and-Paralleling Post (SP) 10207. Sub-Sectioning and Paralleling Post (SSP)
What is the safe distance from 33kv line?
Minimum Approach Distance for Authorized Person
| Voltage | Distance (minimum) |
|---|---|
| 22 KV to 33 KV | 1.0 Meter |
| 33 KV to 66 KV | 1.0 Meter |
| 66 KV to 132 KV | 1.2 Meter |
| 132 KV to 220 KV | 1.8 Meter |
What is difference between LT and HT panel?
HT panels are installed both outdoor and indoor as well, while mostly used in substations for controlling the electricity flow. LT Panels are used with low tension cables to obtain power from the generator or transformer and distribute electricity to various electrical devices and distribution boards.
What is LT and HT line?
A low-tension line is a low voltage line and a high-tension line is a high voltage line. In India LT supply is of 400 Volts for three-phase connection and 230 Volts for single-phase connection. High tension or HT supply is applicable for bulk power purchasers who need 11 kilo-Volts or above.
What is 132/33kV substation?
OPERATION AND MAINTENANCE OF 132/33KV SUBSTATION DEPT OF EEE, SKIT. Page 1 1.1 INTRODUCTION OF SUBSTATION The present-day electrical power system is A.C. i.e. electric power is generated, transmitted and distributed in the form of alternating current. It is delivered to the consumers through a large network of transmission and distribution.
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.
How are 330kV power lines connected to other power stations?
This is fed into a step – up power transformer at the power station site, to give an output of 330kV which is then fed into substation bus bar nearest to the power station. From the bus bar, lines radiate at the same 330kV level to other distant substations of the grid after synchronization conditions are met.
What are the technical specifications of substation equipment?
The specification of substation equipment is meticulously undertaken to conform with the IEC Standards. These technical specifications are published in the Request for Proposal (RfP) documents, to serve as a reference to the implementing contractors. Transformation Substation under construction O. T. OTIS ENGINEERING