Suzhou Electric Appliance Research Institute
期刊號(hào): CN32-1800/TM| ISSN1007-3175

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一種改進(jìn)的電網(wǎng)故障診斷解析模型研究

來源:電工電氣發(fā)布時(shí)間:2017-11-17 09:17 瀏覽次數(shù):3
一種改進(jìn)的電網(wǎng)故障診斷解析模型研究
 
于雪雪1,2,楊文輝1,2,周紅3
(1 三峽大學(xué) 電氣與新能源學(xué)院,湖北 宜昌 443002;2 三峽大學(xué) 梯級(jí)水電站運(yùn)行與控制湖北省重點(diǎn)實(shí)驗(yàn)室,湖北 宜昌 443002;
3 國(guó)網(wǎng)七臺(tái)河供電公司,黑龍江 七臺(tái)河 154600)
 
    摘 要:針對(duì)保護(hù)或斷路器出現(xiàn)拒動(dòng)條件下,保護(hù)期望動(dòng)作狀態(tài)計(jì)算結(jié)果與實(shí)際動(dòng)作邏輯間可能出現(xiàn)失配的原因進(jìn)行了分析。通過計(jì)及主保護(hù)、近后備保護(hù)、遠(yuǎn)后備保護(hù)和斷路器失靈保護(hù)間相互制約關(guān)系,給出了一種電網(wǎng)故障診斷模型解析規(guī)則的改進(jìn)方法。仿真算例表明,所提方法能夠提高故障診斷模型目標(biāo)函數(shù)的計(jì)算精度,獲得更加合理的故障診斷結(jié)果。
    關(guān)鍵詞:故障診斷;解析模型;繼電保護(hù);報(bào)警信息;電力系統(tǒng)
    中圖分類號(hào):TM773     文獻(xiàn)標(biāo)識(shí)碼:A     文章編號(hào):1007-3175(2017)11-0010-04
 
An Improved Analytical Model for Fault Diagnosis in Power Grid
 
YU Xue-xue1,2, YANG Wen-hui1,2, ZHOU Hong3
(1 College of Electrical Engineering and New Energy, Three Gorges University, Yichang 443002, China;
2 Hubei Key Laboratory of Cascaded Hydropower Stations Operation & Control, Three Gorges University, Yichang 443002, China;
3 State Grid Qitaihe Power Supply Company, Qitaihe 154600, China)
 
    Abstract: In allusion to the occurrence of misoperation in protective relays and circuit breakers, this paper analyzed the cause that the calculating results of expected action state mismatched the actual operation results of protective relays. By considering the mutual interaction relationship among main protection, near backup protection, far backup protection and circuit breakers failure protection, this paper gave the amended analytical rules of a kind of grid fault diagnosis model. Simulation examples show the proposed method may improve the calculation accuracy of object functions of fault diagnosis models, and thus obtain more reasonable fault diagnosis results.
    Key words: fault diagnosis; analytical model; protection relay; alarm information; power system
 
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