摘要
通过陕西电网330kV主变在短路电流作用下损坏的实例,分析了短路电流对电气设备破坏的机理,针对大型电力变压器抗短路能力不足的问题,指出传统的补救措施有一定的局限性,提出330kV北郊变电站240MVA主变短路保护的全新补救方案,并阐述了该方案的适用性,得出的结论可供电力主管部门作为相关电气设备反事故措施的参考。
In the light of 330kV main transformer damage under short circuit in Shaanxi power network,the mechanism of short circuit current＇s damage upon electric equipment is analyzed.It is pointed out that the traditional compensation measures have certain limitation,the new compensation scheme of 240MVA main transformer short circuit protection in 330kV northern suburb substation,and the feasibility of scheme is demonstrated,the conclusion can be used as reference for electric power administration department when making related electric equipment countermeasure.
出处
《陕西电力》
2011年第4期34-38,共5页
Shanxi Electric Power
关键词
变压器
短路电流
短路电流限流开断器
电动力
限流器
transformer
short circuit
short circuit limiter
electrodynamic force
current limiter
