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

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基于偏度和峰度指標(biāo)的GIS壓力異常改進(jìn)判據(jù)研究

來源:電工電氣發(fā)布時(shí)間:2016-06-27 10:27 瀏覽次數(shù):12
基于偏度和峰度指標(biāo)的GIS壓力異常改進(jìn)判據(jù)研究
 
張琦1,周博2,王曉娟1
(1 三峽大學(xué) 電氣與新能源學(xué)院,湖北 宜昌 443002;
2 國網(wǎng)湖北省電力公司隨州供電公司,湖北 隨州 441300)
 
    摘 要:針對GIS 設(shè)備傳統(tǒng)年泄漏率計(jì)算判據(jù)的缺陷,提出了一種采用偏度和峰度計(jì)算判據(jù)的改進(jìn)計(jì)算方法。該方法通過分析氣室壓力曲線趨勢,以正態(tài)分布曲線為標(biāo)準(zhǔn),判斷氣室壓力曲線分布類型,確定氣室壓力是否異常;若出現(xiàn)氣室壓力異常,則再通過計(jì)算曲線的增量指標(biāo),判斷其異常類型,最終給出綜合判斷,對GIS 設(shè)備運(yùn)行情況中氣室壓力狀況進(jìn)行評(píng)估。
    關(guān)鍵詞:GIS;年泄漏率;計(jì)算判據(jù);偏度;峰度
    中圖分類號(hào):TM591       文獻(xiàn)標(biāo)識(shí)碼:A       文章編號(hào):1007-3175(2016)06-0020-04
 
Improved Criterion for Abnormal Pressure in Gas Insulated
Switchgear Based on Skewness and Kurtosis Index
 
ZHANG Qi1, ZHOU Bo2, WANG Xiao-juan1
(1 College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, China;
2 State Grid Hubei Electric Power Company Suizhou Electric Power Supply Company, Suizhou 441300, China)
 
    Abstract: Aiming at the shortcomings of traditional calculation criterion of annual leakage rate in gas insulated switchgear (GIS) equipment, this paper put forward an improved calculation method of skewness and kurtosis calculation criterion. This method analyzed the curve tendency of air chamber pressure and took the normal distribution curve as a standard, judging the curve distribution pattern of air chamber pressure to determine whether the air chamber pressure was normal. If the air chamber pressure was abnormal, the increment index needed calculating again to judge its abnormal types and gave the synthetic judgment ultimately to carry out evaluation for air chamber pressure status in GIS equipment.
    Key words: gas insulated switchgear; annual leakage rate; calculation criterion; skewness; kurtosis
 
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