電力變壓器差動(dòng)保護(hù)研究現(xiàn)狀與發(fā)展趨勢
孫玉勝1,劉濤1,董宇1,申克2
(1 鄭州輕工業(yè)學(xué)院 電氣信息工程學(xué)院,河南 鄭州 450002;2 中國化學(xué)工程第十一建設(shè)有限公司,河南 開封 475002)
摘 要:隨著用電負(fù)荷和非線性電氣元件的增加,傳統(tǒng)的差動(dòng)保護(hù)已經(jīng)不能滿足變壓器保護(hù)的靈敏性和可靠性的需求。闡述了國內(nèi)外變壓器差動(dòng)保護(hù)研究的發(fā)展歷程,對(duì)其保護(hù)原理進(jìn)行了分類總結(jié),指出了現(xiàn)有保護(hù)原理存在的不足,并對(duì)變壓器差動(dòng)保護(hù)的研究方向進(jìn)行了展望。
關(guān)鍵詞:電力系統(tǒng);變壓器;差動(dòng)保護(hù);內(nèi)外部故障;靈敏性;可靠性
中圖分類號(hào):TM41 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2016)12-0001-06
Research Status and Development Trend of Power
Transformer Differential Protection
SUN Yu-sheng1, LIU Tao1, DONG Yu1, SHEN Ke2
(1 College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China;
2 China Eleventh Chemical Construction Company Limited, Kaifeng 475002, China)
Abstract: With the increase of electrical load and nonlinear electrical component, the traditional differential protection hasn’t met the requirement of sensitivity and reliability of transformer protection in transformer protection. This paper expounded the development history of transformer differential protection at home and abroad, carried out classification summary for its protection principle, pointed out the existing deficiency of protection principle now available and carried out expectation for transformer differential protection.
Key words: electric power system; transformer; differential protection; internal and external fault; sensitivity; security
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