特高壓斷路器近區故障合成試驗用人工數學鏈路設計研究
瞿哲奕1,2,洪深1,2,陳勇1,2,鄭占鋒1,2,周文杰1,2,張玲1,2
(1 國網電力科學研究院有限公司,江蘇 南京 211000;2 國網電科院檢測認證技術有限公司,江蘇 南京 211000)
摘 要:近區故障開斷特性是斷路器型式試驗中的重要考核項目。就模擬一段架空線路的人工數學鏈路進行了研究及設計,介紹了人工數學鏈路設計及選型,對鏈路結構設計進行了闡述,并從人工數學鏈路的原理結構、參數計算、元器件選型以及過電壓分析等方面進行了仿真計算,最終設計出了滿足800 kV/63 kA整極、1 200 kV/80 kA半極近區故障試驗要求的人工數學鏈路,并且與實際架空線路有較好的等價性。
關鍵詞:近區故障;人工數學鏈路;合成試驗;元件選型;過電壓分析
中圖分類號:TM561;TM726.3 文獻標識碼:A 文章編號:1007-3175(2019)12-0053-06
Artificial Mathematics Link Design Research Used in EHV Circuit Breaker Close-In Fault Synthetic Test
QU Zhe-yi1,2, HONG Shen1,2, CHEN Yong1,2, ZHENG Zhan-feng1,2, ZHOU Wen-jie1,2, ZHANG Ling1,2
(1 State Grid Electric Power Research Institute, Nanjing 211 000, China;
2 State Grid Power Testing and Certification Technology Co., Ltd, Nanjing 211 000, China)
Abstract: The close-in fault making and breaking characteristic is the important evaluation indicator in circuit breaker type tests. A length of overhead line of artificial mathematics link was simulated to carry out research and design. Introduction was made to the artificial mathematics link design and selection. This paper expounded the link structure design and carried out simulated calculation from the aspects of principle structure of artificial mathematics link, parameter calculation, components selection and overvoltage, and designed the artificial mathematics link meeting the requirement of 800 kV/63 kA whole polarity, 1 200 kV/80 kA half polarity close-in fault tests, closely equivalent to the practical overhead line.
Key words: close-in fault; artificial mathematics link; synthetic test; components selection; overvoltage analysis
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