控制回路感應電壓分析與對策
沈建位1,謝名勇2
(1 寧波職業技術學院,浙江 寧波 315800;2 浙江聯能電氣有限公司,浙江 衢州 324000)
摘 要:針對某電廠輸煤電機控制回路在調試過程發生的問題,對故障情況進行了分析;為減少交流長距離控制回路感應電壓的影響,提出了改變繼電器參數、減少感應電壓和寄生電容的產生等處理對策,并結合現場情況,采用電感補償的方法,有效抑制了感應電壓對控制回路的影響。
關鍵詞:控制回路;感應電壓;分布電容
中圖分類號:TM645.2+1 文獻標識碼:B 文章編號: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
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