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案例頻道★盧松城（廣州天豐電力工程設計有限公司，廣東 廣州 510600）
摘要：本文闡述了某發(fā)電廠多次發(fā)生由DEH系統(tǒng)伺服控制卡故障引起高壓調節(jié)閥突然全關，造成機組MFT的情況，以3號機某次跳機為例，深入詳細地分析MFT動作原因，找到存在的問題，并研究出解決問題的對策加以實施，取得良好的效果，消除了重大安全隱患，保障了機組和電網的安全穩(wěn)定，提出的故障分析及處理方法，對處理機組類似問題具有重要的參考價值。
關鍵詞：主燃料跳閘（MFT）；數(shù)字式電液調節(jié)系統(tǒng)（DEH）；閥門流量特性；控制策略
Abstract: It is represented MFT occurs repeatedly for one power plant due to the high pressure regulating valve closes suddenly, and which is caused by faults of DEH servo control card. In the case of Unit 3 of this power plant tripped one time, find out inner faults and put forward correct strategy for solving the problem according to researching the reason of MFT deeply. Meanwhile, produce good effect for eliminating a major safety hazard and guarantee Unit, power grid operate safely.It is useful and important guideline while the same faults appear for power plant again.
Key words: Main fuel trip(MFT); Digital electro-hydraulic regulation system(DEH); Flow characteristic of valve; Control strategy
摘自《自動化博覽》2021年7月刊
北京市公安局海淀分局備案號：11010802023656號