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

Article retrieval

文章檢索

首頁(yè) >> 文章檢索 >> 往年索引

一種3/2接線方式下的開關(guān)設(shè)備回路電阻評(píng)估方法研究

來源:電工電氣發(fā)布時(shí)間:2016-03-14 10:14 瀏覽次數(shù):7

一種3/2接線方式下的開關(guān)設(shè)備回路電阻評(píng)估方法研究 

吳仁澤,江海濤,卜京 
南京理工大學(xué) 自動(dòng)化學(xué)院,江蘇 南京 210094 
 

摘 要:針對(duì)3/2接線方式開關(guān)設(shè)備回路電阻的在線評(píng)估問題,提出了一種基于電流測(cè)量的在線評(píng)估方法。利用基爾霍夫定律和歐姆定律建立3/2接線方式開關(guān)站開關(guān)設(shè)備的數(shù)學(xué)模型,將求解開關(guān)設(shè)備電阻的問題轉(zhuǎn)化為求解非齊次線性方程組的問題。在求解過程中,對(duì)于存在相關(guān)性的方程組系數(shù)矩陣,利用條件數(shù)的大小作為選取方程組系數(shù)矩陣組合的判斷依據(jù)對(duì)數(shù)學(xué)模型進(jìn)行優(yōu)化可有效提高求解精度,從而提高評(píng)估的質(zhì)量。以某500 kV開關(guān)站的實(shí)測(cè)電流數(shù)據(jù)進(jìn)行仿真計(jì)算,驗(yàn)證了本方法的有效性。
關(guān)鍵詞:3/2接線;回路電阻;評(píng)估
中圖分類號(hào):TM643;TM645 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2015)02-0005-04


Research on Evaluation of Switchgear Circuit Resistance for 3/2 Wiring Connection 

WU Ren-ze, JIANG Hai-tao, BU Jing 
School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China 
 

Abstract: Aiming at the online evaluation problem of 3/2 wiring connection switchgear circuit resistance, this paper proposed a kind of online evaluation method based on current measurements. This method used Kirchhoff’s and Ohm’s laws to establish the mathematical model of switchgear substations which used 3/2 wiring connection. The switchgear resistance problems were converted into non-homogeneous linear equations. To make the calculation for the value of the resistance more accurate, some equations were selected from the correlation coefficient matrix of the equations by comparing matrix condition number, so as to improve the evaluation quality. Simulation studies on the current data obtained from 500 kV switchgear substations verify the effectiveness of the proposed method.
Key words: 3/2 wiring connection; circuit resistance; evaluation


參考文獻(xiàn)
[1] 王軍霞.基于多層模糊評(píng)估模型的高壓斷路器狀態(tài)評(píng)估方法研究[D].成都:西華大學(xué),2013.
[2] 肖建濤,王毅,呂錦柏,韓薇.新型斷路器回路電阻測(cè)試系統(tǒng)的研究[J].電測(cè)與儀表,2014,51(5):67-72.
[3] Aichi H, Tahara N.Analysis on the constriction resistance of the electric contact by the contact model using the electrolyte bath[C]//Proceedings of 20th International Conference on Electrical Contacts, 1994.
[4] 牛文靜.斷路器導(dǎo)電回路電阻智能測(cè)試的研究[D]. 大連:大連理工大學(xué),2004.
[5] 劉幗巾,李文華,蔣棟.電器觸點(diǎn)接觸電阻測(cè)量裝置的研究[J].電測(cè)與儀表,2001,38(2):15-16.
[6] 夏小飛.基于沖擊大電流測(cè)量斷路器回路電阻的方法研究[J].電氣技術(shù),2013(10):28-33.
[7] 李艷艷.斷路器狀態(tài)監(jiān)測(cè)[D].大連:大連理工大學(xué),2002.
[8] 金濤,蔡超,王俊,阮玲.基于遺傳算法的有源式高壓直流開關(guān)參數(shù)計(jì)算[J].武漢大學(xué)學(xué)報(bào):工學(xué)版,2013,46(2):223-227.
[9] 陳亞文,閔濤,王萬斌.數(shù)值計(jì)算中一類病態(tài)不適定問題的求解方法[J].紡織高?;A(chǔ)科學(xué)學(xué)報(bào),2003,16(l):10-13.
[10] 董玉磊.GPS坐標(biāo)轉(zhuǎn)換中基于改進(jìn)遺傳算法求解病態(tài)方程的探討[D].合肥:合肥工業(yè)大學(xué),2007.
[11] 王正林,劉明,陳連貴.精通MATLAB[M].3版.北京:電子工業(yè)出版社,2013.
[12] 孫曉飛.兩種特殊矩陣的條件數(shù)[D].太原:太原理工大學(xué),2013.