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作者：沈鐵志（國(guó)能神福（石獅）發(fā)電有限公司，福建 泉州 362700）

摘要：為了提高火電廠汽輪機(jī)危急遮斷系統(tǒng)（ETS）及保護(hù)回路的可靠 性，排除ETS保護(hù)回路中存在的典型設(shè)計(jì)缺陷及隱患，進(jìn)一步優(yōu)化汽輪 機(jī)主保護(hù)聯(lián)鎖功能，減少ETS保護(hù)聯(lián)鎖控制回路誤動(dòng)和拒動(dòng)風(fēng)險(xiǎn)，避免 火力發(fā)電廠經(jīng)濟(jì)損失及不安全事件的發(fā)生，針對(duì)汽輪機(jī)危急遮斷系統(tǒng)保 護(hù)回路設(shè)計(jì)及安裝中常見的典型問(wèn)題進(jìn)行了列舉和風(fēng)險(xiǎn)分析，對(duì)國(guó)內(nèi)火 力發(fā)電廠汽輪機(jī)危急遮斷系統(tǒng)及回路常見設(shè)計(jì)的潛在風(fēng)險(xiǎn)及產(chǎn)生的原因 進(jìn)行了研究，提出了針對(duì)性的優(yōu)化解決措施，在應(yīng)用中切實(shí)提高了汽輪 機(jī)危急遮斷系統(tǒng)及保護(hù)回路的可靠性，對(duì)工控領(lǐng)域其他應(yīng)用保護(hù)聯(lián)鎖功 能的場(chǎng)所也具有同樣的推廣和借鑒作用。

關(guān)鍵詞：可靠性；危急遮斷系統(tǒng)；ETS；保護(hù)回路；保護(hù)誤動(dòng)

Abstract: In order to improve the reliability of turbine emergency trip  system (ETS) and protection circuit in thermal power plant, eliminate  the typical design defects and hidden troubles in ETS protection circuit,  further optimize the interlock function of turbine main protection,  reduce the risk of Maloperation and rejection of the fossil-fuel power  station chain control circuit, and avoid economic losses and unsafe  incidents, the typical problems in the design and installation of  protection circuit for emergency trip system of Steam Turbine are  enumerated and the risks are analyzed. This paper studies the potential  risks and causes of common design of emergency trip system and circuit  of fossil-fuel Power Station Steam Turbine in China, and puts forward  the corresponding optimized solutions. The reliability of emergency trip  system and protection circuit is improved in the application, which can  be used as a reference for other places in industrial control field.

Key words: Reliability; Emergency trip system; ETS; Protection circuit;  Protection misoperation

在線預(yù)覽：提高汽輪機(jī)ETS保護(hù)回路可靠性的技術(shù)措施.pd

摘自《自動(dòng)化博覽》2021年8月刊