“Draw a 132 kV to 33 kV grid substation single line diagram with a 2000 A line disconnector and circuit breaker, CT, 132 kV bus voltage transformer, 90 MVA grid transformer, 33 kV bus section breaker, two outgoing feeders, and a 12 MVAr capacitor bank.”
看懂背後的決策。
A 2000 A disconnector, CT, and circuit breaker control the 132 kV incomer.
A voltage transformer monitors the 132 kV main bus.
A 90 MVA transformer steps power down to 33 kV.
A bus section breaker supports controlled switching at 33 kV.
A 12 MVAr capacitor bank is connected to the 33 kV bus.
Use this for a high-level grid substation concept. Protection, surge arresters, grounding, clearances, and breaker duties require detailed utility engineering.
常見問題
Why is a capacitor bank connected at 33 kV?
It supplies reactive power locally and can help support voltage and reduce upstream reactive demand.
What is the bus section breaker for?
It can split or connect bus sections to support maintenance and operational flexibility.
Does the diagram include surge arresters?
No. This is a concise topology diagram; arrester placement belongs in detailed substation design.