摘要
针对煤矿井下电网选择性漏电保护的问题,着重围绕零序功率方向性原理对该问题进行了深入研究,通过设计零序电压、电流采样以及相位比较电路,实现井下电网选择性漏电保护三个条件的判定,同时为了验证所用电路的可行性,使用电子电路仿真软件Multisim 9进行了硬件仿真,并给出了实验波形及数据,有力地证明了电路的实用性与可靠性。
According to the selective electric leakage protection problems in the underground mine electric grid, a detail study on the selective electric leakage protection problems was conducted base on the zero - sequence power direction principle. With the designed zero sequence voltage, current sampling and phase comparison circuit, three conditions for the selective electric leakage protection of the underground mine electric grid were determined. Meanwhile in order to verify the feasibility of the circuit applied, the electronic circuit simulation software was applied to the hardware simulation. The experiment waveform and data obtained could be firmly to approve the practicality and reliability of the circuit.
出处
《煤炭工程》
北大核心
2010年第2期92-94,共3页
Coal Engineering
关键词
选择性漏电保护
零序功率方向性
相位比较
selective electric leakage protection
zero - sequence power direction
phase comparison
作者简介
李国顺（1982-），男，河北沧州人，2008年毕业于河北工业大学，硕士，河北工程技术高等专科学校教师，研究方向为电气控制、电力电子技术应用。
