控制回路感應(yīng)電壓分析與對(duì)策
沈建位1，謝名勇2
（1 寧波職業(yè)技術(shù)學(xué)院，浙江 寧波 315800；2 浙江聯(lián)能電氣有限公司，浙江 衢州 324000）
摘 要：針對(duì)某電廠輸煤電機(jī)控制回路在調(diào)試過(guò)程發(fā)生的問(wèn)題，對(duì)故障情況進(jìn)行了分析；為減少交流長(zhǎng)距離控制回路感應(yīng)電壓的影響，提出了改變繼電器參數(shù)、減少感應(yīng)電壓和寄生電容的產(chǎn)生等處理對(duì)策，并結(jié)合現(xiàn)場(chǎng)情況，采用電感補(bǔ)償?shù)姆椒ǎ行б种屏烁袘?yīng)電壓對(duì)控制回路的影響。
關(guān)鍵詞：控制回路；感應(yīng)電壓；分布電容
中圖分類號(hào)：TM645.2+1 文獻(xiàn)標(biāo)識(shí)碼：B 文章編號(hào)：1007-3175(2020)07-0047-04
Analysis and Countermeasure of Induced Voltage in Control Circuit
SHEN Jian-wei1, XIE Ming-yong2
（1 Ningbo Polytechnic, Ningbo 315800, China; 2 Zhejiang Union Power Electric Co., Ltd, Quzhou 324000, China）
Abstract: This paper analyzed the problems that occurred during the commissioning process of a coal-fired motor control loop of a power plant, the failure conditions. In order to reduce the influence of the induced voltage of the AC long-distance control loop, the countermeasures such as changing the relay parameters, reducing the induced voltage and the generation of parasitic capacitance are proposed; and combined with the on-site situation, the method of inductance compensation is used to effectively suppress the influence of the induced voltage on the control loop.
Key words: control circuit; induced voltage; distributed capacitance
參考文獻(xiàn)
[1] 欒瑞瑛. 控制回路中電纜感應(yīng)電壓分析及解決方案[J]. 通訊世界，2017(21)：237-239.
[2] 林樹(shù)國(guó). 控制電纜感應(yīng)電壓引起機(jī)泵頻繁故障停機(jī)事故[J]. 電工技術(shù)，2016(1)：65-66.
[3] 韓吉成，趙樹(shù)燾，李紅星，陳雨. 由分布電容引起的控制故障及其處理[J]. 電世界，2017，58(2)：47-48.
[4] 農(nóng)海. 長(zhǎng)距離控制回路設(shè)計(jì)方案探討[J]. 廣西電業(yè)，2018(11)：78-80.
