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      [1]夏君山,夏向陽,趙 威,等.基于差值電流分析的高壓電纜在線監測研究[J].高壓電器,2019,55(07):165-172.[doi:10.13296/j.1001-1609.hva.2019.07.024]
       XIA Junshan,XIA Xiangyang,ZHAO Wei,et al.Research on Online Monitoring for HV Cable Based on Differential Current Analysis[J].High Voltage Apparatus,2019,55(07):165-172.[doi:10.13296/j.1001-1609.hva.2019.07.024]
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      基于差值電流分析的高壓電纜在線監測研究()
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      《高壓電器》[ISSN:1001-1609/CN:61-11271/TM]

      卷:
      第55卷
      期數:
      2019年07期
      頁碼:
      165-172
      欄目:
      研究與分析
      出版日期:
      2019-07-31

      文章信息/Info

      Title:
      Research on Online Monitoring for HV Cable Based on Differential Current Analysis
      作者:
      夏君山1 夏向陽2 趙 威2 李明德3 黃 海3 陳善求1
      (1. 金杯電工股份有限公司, 長沙 410007; 2. 長沙理工大學電氣與信息工程學院, 長沙 410114; 3. 衡陽市産商品質量 監督檢驗所, 湖南 衡陽 421000)
      Author(s):
      XIA Junshan1 XIA Xiangyang1 ZHAO Wei2 LI Mingde3 HUANG Hai3 CHEN Shanqiu1
      (1. Goldcup Electric Apparatus Co.,Ltd., Changsha 410007, China; 2. College of Electrical and Information Engineering, Changsha University of Science & Technology, Changsha 410114, China; 3. Hengyang City Commodity Quality Supervision and Inspection, Hunan Hengyang 421000, China)
      關鍵詞:
      高壓電纜 接地線電流 比值分析 不平衡度 在線監測
      Keywords:
      HV cable ground line current ratio analysis unbalance factor online monitoring
      DOI:
      10.13296/j.1001-1609.hva.2019.07.024
      摘要:
      針對當前高壓電纜故障單一參數監測判斷准確度低,多參數監測存在數據融合分析不足等問題,提出一種基于差值電流分析的高壓電纜故障在線監測方法。該方法通過測量直接接地箱和交叉互聯接地箱處接地線電流,對故障及正常情況下接地線三相電流進行比值分析和不平衡度分析來識別故障,根據模糊控制原理建立了故障判別依據和相關數據庫,以此進行故障診斷。分析了故障情況下接地箱電流變化情況並仿真模擬了不同位置的接地箱進水、同軸電纜破損、接頭開路、接頭短路等故障。最後以此設計出一套高壓電纜線路故障在線監測系統。通過實例分析驗證了該方法的可行性,能及時預警高壓電纜線路故障,防止高壓電纜線路發生安全事故。
      Abstract:
      Since single-parameter monitoring of power cable sheath fault cannot be evaluated fault accurately and multi-parameter fault monitoring is not enough for data fusion analysis, an on-line cable faults method based on differential current analysis is proposed to precautions for early failures of high-voltage cable lines. This method measures grounding current at the direct grounding box and the cross-connected grounding box and calculate the fault and normal conditions of the grounding wire three-phase current for ratio analysis and unbalance to identify the fault. The fault criteria and fault database are established by fuzzy control based on the change of character parameter such as eccentricity, and inclination angle of the locus. The faults such as grounding box water inlet, coaxial cable broken, joint open circuit, joint short circuit in different locations are simulated. A set of cable insulation on-line monitoring system is designed and simulated at laboratory which includes the front-end signal acquisition unit, micro-controller master unit, as well as background data analysis and processing unit. The actual monitoring results show that the cable online monitoring system based on this method can truly reflect the insulation characteristics of the cable.

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      備注/Memo

      備注/Memo:
      夏君山(1967—),男,碩士,教授級高工,主要從事電纜設計與制造工作。 夏向陽(1968—),男,博士,教授,主要研究方向爲電力電子技術在電力系統中的應用和電力電纜故障診斷。 趙 威(1995—),男,碩士生,研究方向爲電力系統運行與控制(通訊作者)。收稿日期:2018-11-18; 修回日期:2019-01-10 基金項目:國家自然科學基金資助項目(51307009);湖南省自然科學衡陽聯合基金(2018JJ4025)。 Project Supported by National Natural Science Foundation of China(51307009),Hunan Natural Science Hengyang Joint Fund(2018JJ4025).
      更新日期/Last Update: 2019-07-15