500 kV電抗器局部放電故障處理分析
石海鵬，奇達博爾，姜楠，張倩然
（國網內蒙古東部電力有限公司電力科學研究院，內蒙古 呼和浩特 010020）
摘 要：針對某500 kV 變電站帶電檢測時發現的500 kV 1 號電抗器A 相存在明顯的局部放電信號情況，根據油色譜檢測數據，通過現場檢查、測試及故障分析，顯示該電抗器乙炔含量超標，初步判斷缺陷為電抗器爬梯對側的屏蔽件、定位件、緊固件等金屬部件發生懸浮放電，進一步確認是因為此處的鐵軛穿心桿螺母松動導致局部放電。根據故障原因，采取了相應的故障檢修處理措施，有效消除了事故隱患。
關鍵詞：電抗器；帶電檢測；局部放電；油色譜分析
中圖分類號：TM471+.2 文獻標識碼：B 文章編號：1007-3175(2017)04-0034-03
Disposal and Analysis of 500 kV Reactor Partial Discharge Fault
SHI Hai-peng, QI Da-boer, JIANG Nan, ZHANG Qian-ran
（State Grid East Inner Mongolia Electric Power Research Institute, Hohhot 010020, China）
Abstract: In allusion to the condition that there obviously exists partial discharge signals in 500 kV No.1 Reactor A phase when the live detection carries out in certain 500 kV substation, according to the oil chromatographic detection data, via field inspection, test and fault analysis, it was found that the acetylene content of the reactor exceeded the standard, so as to initially judge that the drawback was the suspension discharge of metal parts such as shielding parts, locating piece, fasteners and other parts of the opposite side of the reactor ladder and to further affirm that the iron yoke rod nut loose led to partial discharge. In consideration of the failure causes, the corresponding corrective maintenance treatment measure was adopted to effectively eliminate accident potential.
Key words: reactor; live detection; partial discharge; oil chromatographic analysis
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