含分布式電源的配電網(wǎng)故障特征研究
宮林國(guó)1,王法2
1 上海電力學(xué)院 電氣工程學(xué)院,上海 200090;2 上海電力公司,上海 201500
摘 要:介紹了不同類型的分布式電源在配電網(wǎng)發(fā)生故障時(shí)的特征,分析了線路不同位置發(fā)生短路故障時(shí)分布式電源接入配電網(wǎng)后對(duì)三段式電流保護(hù)所產(chǎn)生的不同影響,在PSCAD 仿真軟件上建立了等效的配電網(wǎng)模型,得出了引起保護(hù)拒動(dòng)或誤動(dòng)的臨界值,分析結(jié)果與仿真結(jié)果一致,為配電網(wǎng)保護(hù)的設(shè)計(jì)整定提供了依據(jù)。
關(guān)鍵詞:分布式電源;故障特征;繼電保護(hù)
中圖分類號(hào):TM711 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2013)10-0006-04
Research on Fault Characteristics of Distribution Network with Distributed Generation
GONG Lin-guo1, WANG Fa2
1 School of Electrical Engineering, Shanghai University of Electric Power, Shanghai 200090, China;
2 Shanghai Power Supply Company, Shanghai 201500, China
Abstract: Introduction was made to the features of different types of distributed generation when the faults of distribution network happened.This paper analyzed the different impacts of distributed generation accessing distribution network on three sections of current protection when the faults happened at different positions. The equivalent model of distribution network was established on PSCAD simulation software to obtain critical value resulting in protection rejection and misoperation and the analysis result was consistent with simulation result, which provided basis for the design setting of distribution network protection.
Key words: distributed generation; fault characteristic; relay protection
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