primary Equipment of Distribution

Network and Its Coordinations of the Parameters

CHEN Zhen—sheng1，QIN Xiao—hui2

(1.Xi’an High Voltage Electric Apparatus Research Institute，Xi’an 710077,China;2.LIaoning

Head Office of Science and Technology Equipment，Shenyang 110004)

Abstract：The paper presents primary equipment of distributing network of city network and load breaker switchgear coordination with fuses.

Key words：distribution network；box transformer substation；trausformer；fuse；circuit breaker；automatic sec-tionalizer;automatic reclosing device;current transformer

1  前言

由发电厂发出的电能，最后降到6～35kV等级，经过配电网变为城乡居民、工业，农业，商业用电。因此，配电网的可靠性直接关系到人民生活、工农业生产安全，另外，完善的电力市场、电价也要求配电网提高经济性及可靠性。

配电网的主要设备是负荷开关—熔断器组合电器、断路器、箱式变电站、自……