基于相控投切技术的无功补偿装置  

Reactive Power Compensation Device Based on Phase-Controlled Switching Technology

作　　者：汪玉凤[1] 王静[1] 许晓禹[1] 费翔[2] 

机构地区：[1]辽宁工程技术大学电气与控制工程学院,葫芦岛125105 [2]辽宁工程技术大学矿业技术学院,葫芦岛125105

出　　处：《计算机系统应用》2013年第1期178-181,195,共5页Computer Systems & Applications

摘　　要：为了减小煤矿电网在无功补偿时随机投切电容器组给电网带来的涌流及过电压,设计了一套以具有发展前景的"软开关"技术即相控技术为根基的无功补偿装置,采用寿命长、成本低的带有永磁机构的真空接触器作为投切开关,该机构较传统的弹簧机构和电磁机构动作分散性小,为满足动作时间高度一致,对真空接触器动作时间的分散性进行有效补偿,并采用模块化的思想理念建立系统整体结构,采取适当的控制策略完成预期位置投切.最后本系统进行了仿真,并在某矿6kv电网中进行了实验测试,仿真和实验结果都表明本系统能有效的补偿系统无功,有一定的应用价值.In order to reduce inrush current and over-voltage which caused by random switch capacitors during reactive power compensation in coal mine power network,this paper designs a kind of reactive power compensation device based on promising ＂soft switch＂ technology that is phase-controlled switching technology, takes long life, low cost vacuum contactors with permanent magnetic actuator as switching ,this actuator has little action time dispersion than traditional spring actuator and electromagnetic actuator, in order to meet action time high degree of consistency, this paper compensates vacuum contactors action time dispersion, uses modular ideas to design reactive power compensation system structure diagram, together with the appropriate control strategy, completion the capacitor bank switching at a predetermined phase.finally this system makes experiment test in certain mine coal 6KV power network, experiment results show that phase-controlled switching technology of reactive power compensation effect is unmatched by traditional others methods, practice proved that this system has a certain value.

关 键 词：相控技术 永磁机构 真空接触器 无功补偿 控制策略 

分 类 号：TM761.1[电气工程—电力系统及自动化]