UNITROL6800勵磁系統(tǒng)故障引起跳機原因分析及改進
賀永剛1,趙鐵英2
(1 華潤電力焦作有限公司,河南 焦作 454001;
2 河南理工大學 電氣工程與自動化學院,河南 焦作 454000)
摘 要:介紹了一起UNITROL6800 勵磁系統(tǒng)故障引起的機組跳閘事故,對事故原因進行了分析與勵磁系統(tǒng)試驗驗證,給出相應的整改方案,并進行了抗干擾改造。實際運行情況表明,該方案提高了UNITROL6800 系統(tǒng)的可靠性,且有效杜絕了系統(tǒng)誤動作引起跳機的不良后果。
關鍵詞:勵磁故障;誤動;脈沖閉鎖;可靠性
中圖分類號:TM611 文獻標識碼:B 文章編號:1007-3175(2016)10-0031-0005
Reason Analysis of Unit Trip Caused by UNITROL6800 Excitation
System Fault and Improvement
HE Yong-gang1, ZHAO Tie-ying2
(1 China Resources Power Jiaozuo Co., Ltd, Jiaozuo 454001, China;
2 School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China)
Abstract: Introduction was made to the unit trip accident caused by the UNITROL6800 excitation system fault. The accident cause was analyzed and the excitation system was verified. This paper gave the corresponding rectification and reform program and carried out anti-interference reform. The actual operation shows that this scheme raises the reliability of UNITROL6800 system and can eliminate adverse consequences caused by the system misoperation effectively.
Key words: excitation system; maloperation; pulse blocking; reliability
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