Primary wiring in substation
Power transmission equipment includes
Equipment that transforms voltage: such as a transformer.
Switching appliances for making and breaking circuits: such as circuit breakers, disconnectors, fuses, etc.
Electrical appliances that protect against overvoltage and limit fault current: such as lightning arresters, lightning rods, lightning conductors, and reactors.
Reactive power compensation equipment: such as power capacitors, synchronous camera adjustment, and static compensator.
Current-carrying conductors: such as busbars, leads, cables, overhead lines.
Grounding device; such as transformer neutral point grounding, equipment shell grounding, lightning protection grounding, etc.
Electrical main wiring The primary equipment in power plants and substations is a circuit that is connected according to certain rules, also known as electrical primary wiring or primary system.
Basic parameters of high voltage circuit breaker
Rated breaking current INbr, full breaking time tab, closing time ton
Rated dynamic stable current (peak value) ies, thermal stable current It, automatic reclosing performance
Operating characteristics: the secondary winding cannot be opened
Secondary wiring: single-phase wiring; star wiring; incomplete star wiring