李倩, 李奎, 王尧,等.脉动直流剩余电流下AC型漏电断路器动作特性分析[J].河南理工大学学报（自然科学版）,2020,39(3):100-107.

LI Q, LI K, WANG Y, et al.Analysis on tripping performances of AC-type leakage circuit breaker underpulsating DC residual current[J].Journal of Henan Polytechnic University(Natural Science) ,2020,39(3):100-107.

脉动直流剩余电流下AC型漏电断路器动作特性分析

李倩1,2, 李奎1,2, 王尧1,2, 王天朔1,2, 林靖怡1,2, 孙家豪1,2

1.河北工业大学省部共建电工装备可靠性与智能化国家重点实验室，天津 300130;2.河北工业大学河北省电磁场与电器可靠性重点 实验室，天津 300130

摘要:电力电子设备系统出现故障时，漏电电流呈现非正弦特征，并会对漏电断路器的动作特性产生影响。本文通过对脉动直流剩余电流的特征进行分析，建立AC型剩余电流互感器数学模型，分析直流分量对剩余电流互感器输出的影响。采用MATLAB/Simulink建立剩余电流互感器动态仿真模型，对AC型漏电断路器的典型检测与保护电路进行分析，发现脉动直流剩余电流下互感器输出信号失真为其动作特性变化的主要原因。对AC型漏电断路器的漏电保护动作特性进行试验测试，结果表明，在脉动直流剩余电流下，断路器不能正确动作。

关键词:漏电保护;剩余电流;AC型漏电断路器;互感器;脉动直流剩余电流

doi:10.16186/j.cnki.1673-9787.2020.3.13

基金项目:国家自然科学基金资助项目（51077038 ）

收稿日期:2019/08/22

修回日期:2019/10/19

出版日期:2020/05/15

Analysis on tripping performances of AC-type leakage circuit breaker underpulsating DC residual current

LI Qian1,2 LI Kui1,2, WANG Yao1,2, WANG Tianshuo1,2, LIN Jingyi1,2

1.State Key Laboratory ofReliability and Intelligence ofElectrical Equipment，Hebei University of Technology，Tianjin  300130，China;2.Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province，Hebei University of Technology，Tianjin  300130，China

Abstract:The leakage current of power electronic equipment system presents non-sinusoidal characteristic as the faults appears， and this has influence on the operation characteristics of the leakage breaker. The characteristics of pulsating DC residual current were analyzed， and the mathematical model of AC residual current transformer was established to analyze the influences of DC component on the output of residual current transformer. The dynamic simulation model of residual current transformer was established in MATLAB/Simulink. The typical detection and protection circuit of AC-type leakage circuit breaker was analyzed， and it was revealed that the distortion of the output signal of transformer was the main reason for the change of tripping performances. The action characteristics of the AC-type leakage circuit breaker were tested， and the results showed that the AC-type leakage circuit breaker failed to trip off under the pulsating DC residual current

Key words:leakage current protection;residual current;AC-type leakage circuit breaker;transformer;pulsating DC residual current

脉动直流剩余电流下AC型漏电断路器动作特性分析_李倩.pdf