BP-2B微机型母线差动保护校验

The Check of BP-2B Busbar Differential Protection

母线是电能集中和供应的枢纽,母线故障的处理不当将破坏电力系统的安全稳定运行。母线保护装置能及时检测到母线故障,并快速有选择性地切除故障母线,将故障点从系统隔离。母线保护装置运行的可靠性对电力系统的稳定运行有着重要意义。文章从普通比率制动特性的母线差动保护出发,对南瑞BP-2B型微机母线差动保护的原理和特性进行分析,提出了一种适用于保护定检及装置单独调试的具有普遍适用性的复式比率差动校验方法,对电网微机型母差保护装置的安全稳定运行具有一定意义。

Busbar is the hub of the power concentration and supply. Improper handling of the busbar fault will damage the power system security and stability. Busbar protection device can immediately detect busbar faults, and make fast selective removal of failure busbar, then isolate the fault from the system. Busbar protection operation reliability has an important significance to the stable operation of the power system. From the busbar differential protection of ordinary rate braking characteristics, this article analyzed the principles and characteristics of the NARI BP-2B microprocessor-based bus differential protection, and presented a kind of universal applicable check method for differential protection of compound rate, which is suit for both seized check and separate debugging of protection devices. The method has certain significance for the safe stable operation of microprocessor-based busbar differential protection.