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What is a substations

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A substation is part of an electrical transmission and distribution system that transforms voltage from high to low levels or vice versa. Electric power may pass through multiple substations at different voltages. A substation contains transformers to change voltages between transmission and distribution levels or between two transmission voltages. Substations are classified by their voltage levels as power stations, extra high voltage substations, high voltage substations, or medium voltage substations, with each containing components like transformers, switches, circuit breakers, and monitors suited to their operating voltages.

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What is a substations A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions between the generating station and consumer. Electric power may flow through several substations at different voltage levels. A substation may include transformers to change voltage levels between high transmission voltages and lower distribution voltages, or at the interconnection of two different transmission voltages.
Classification of substations according to voltage levels 1- power stations 2- Extra high voltage substations 400KV transmission substations 3- High voltage substations 132 KV transmission substations 4- Medium voltage substations 33 KV Distribution substations
1- power stations Components of power stations A- Generators B- step-up transformers (Delta / Star connection) C- Disconnect switches (DS) D- Low and High voltage circuit breakers (CB) E- Earth switches F- Current transformer G- voltage transformer H- Lightning Arrestors
What is a substations
2- Extra high voltage substations 400KV Components of Extra high voltage substations 400KV A- Bus bars B- Step down autotransformers (star/ Star / delta connection)400/132/11.5 KV C- Disconnect switches (DS) D- High voltage circuit breakers (CB) E- Earth switches F- Current transformer G- Voltage transformer H- Lightning Arrestors
What is a substations
3- High voltage substations 132 KV Components of high voltage substations 132 KV A- Bus bars B- Step-down power transformers (star/ Star / delta connection)132/33/11.5 KV C- Disconnect switches (DS) D- High voltage circuit breakers (CB) E- Earth switches F- Current transformer G- Voltage transformer H-Lightning Arrestors
What is a substations
4-Medium voltage substations 33 KV Components of Medium voltage substations 33 KV A- Bus bars B- Step-down power transformers (Delta/star connection)33/11.5 KV C- Disconnect switches (DS) D- Medium-voltage circuit breakers (CB) E- Earth switches F- Current transformer G- Voltage transformer H-Lightning Arrestors
What is a substations
What is a substations
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What is a substations

  • 1. What is a substations A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions between the generating station and consumer. Electric power may flow through several substations at different voltage levels. A substation may include transformers to change voltage levels between high transmission voltages and lower distribution voltages, or at the interconnection of two different transmission voltages.
  • 2. Classification of substations according to voltage levels 1- power stations 2- Extra high voltage substations 400KV transmission substations 3- High voltage substations 132 KV transmission substations 4- Medium voltage substations 33 KV Distribution substations
  • 3. 1- power stations Components of power stations A- Generators B- step-up transformers (Delta / Star connection) C- Disconnect switches (DS) D- Low and High voltage circuit breakers (CB) E- Earth switches F- Current transformer G- voltage transformer H- Lightning Arrestors
  • 5. 2- Extra high voltage substations 400KV Components of Extra high voltage substations 400KV A- Bus bars B- Step down autotransformers (star/ Star / delta connection)400/132/11.5 KV C- Disconnect switches (DS) D- High voltage circuit breakers (CB) E- Earth switches F- Current transformer G- Voltage transformer H- Lightning Arrestors
  • 7. 3- High voltage substations 132 KV Components of high voltage substations 132 KV A- Bus bars B- Step-down power transformers (star/ Star / delta connection)132/33/11.5 KV C- Disconnect switches (DS) D- High voltage circuit breakers (CB) E- Earth switches F- Current transformer G- Voltage transformer H-Lightning Arrestors
  • 9. 4-Medium voltage substations 33 KV Components of Medium voltage substations 33 KV A- Bus bars B- Step-down power transformers (Delta/star connection)33/11.5 KV C- Disconnect switches (DS) D- Medium-voltage circuit breakers (CB) E- Earth switches F- Current transformer G- Voltage transformer H-Lightning Arrestors
  • 12. Thank you for watching