【摘要】 针对中低压母线保护提出了一种基于电流突变量的保护方案。该保护方案通过比较分析电源侧与负荷侧的电流突变量采样值,区分了母线内部故障、外部故障,并且考虑了母线空载充电时以及母线正常运行时增加负荷的情况。此种保护方案具有原理简单、快速可靠和易于实现等特点。更多还原

【Abstract】 Aimming at the protection of low voltage bus,a protective plan based on current mutation guantity is proposed.Through comparison and analysis of the sampling value of current mutation quantity of the power supply side and load-side,the internal bus faults and external faults are distinguished.The load increase situations are considered with bus no-load charging and normal operation.The protective plan is simple,fast,reliable and easy to implement.更多还原