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电子工程2019年14期

浅谈电力系统谐振过电压
杨志强
(四川巴河水电开发有限公司,四川 巴中 636400)

摘  要:本文详细分析电力系统线性谐振和参数谐振,以及谐振过电压的危害,在电力系统运行中,为了限制和消除这类有危害的过电压,提出可以采用的方法。电力系统运行中,因为有电感、电容的存在,加之不同情况下对设备的运行方式和状态的改变,导致谐振和过电压,本文探讨了实际运行中产生的多种谐振过电压以及危害较大、产生频率较高的铁磁谐振,并结合工作实例进行分析,且提出了相应的改善措施。我们研究谐振的目的就是要科学地利用谐振的特征,与此同时又要预防它在我们生活和工作中带来的危害。


关键词:过电压;谐振;电容;电感;保护装置



中图分类号:TM864         文献标识码:A         文章编号:2096-4706(2019)14-0049-03


Talking about the Resonance Overvoltage of Power System

YANG Zhiqiang

(Sichuan Bahe Hydropower Development Co.,Ltd.,Bazhong 636400,China)

Abstract:In this paper, the linear resonance and parametric resonance of power system and the harm of resonance overvoltage are analyzed in detail. In the operation of power system,in order to limit and eliminate such harmful overvoltage,a method can be proposed. In the operation of the power system,because of the existence of inductance,capacitance,and changes in the operation mode and state of the device under different conditions,resulting in resonance and overvoltage,this paper discusses the various resonant overvoltages and hazards generated in actual operation. Large,high-frequency ferromagnetic resonance is generated,and the corresponding improvement measures are proposed through the combination of working examples. The purpose of our study of resonance is to scientifically exploit the characteristics of resonance,while at the same time preventing the harm it brings in our lives and work.

Keywords:overvoltage;resonance;capacitance;inductance;protection device


参考文献:

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[2] 孙增杰,王铁强,王海棠. 电力系统铁磁谐振分析综述 [J].电力设备,2007(12):62-64.

[3] 金雄飞,李之昆. 电力系统铁磁谐振研究现状 [J]. 四川电力技术,2004(1):10-13.

[4] 秦涛. 铁路电力系统电压互感器铁磁谐振解决方案的探讨 [J]. 民营科技,2013(3):58+143.


作者简介:杨志强(1988.04-),男,汉族,四川平昌人,电气助理工程师,本科,研究方向:电气运行和检修。