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요약정보
大型接地网腐蚀诊断优化方案研究 / Study on Optimized Method of Erosion Diagnosis of Large Grounding Grid
Resource Type
Academic Journal
Authors
杨建龙
;
贺鹏威
;
薄林
;
YANG Jianlong
;
HE Pengwei
;
BO Lin
Source
电瓷避雷器 / Insulators and Surge Arresters
. (3):38-44
Subject
大型接地网
腐蚀诊断
优化分析
Language
Chinese
ISSN
1003-8337
Online Access
Find it @ DONGA
초록
变电站接地网由于埋设在土壤中,在长期电化学作用下逐渐发生腐蚀,导致其接地电阻增大、接地性能下降,严重时可能引发接地事故,影响电力系统的稳定运行.若发生事故后,再通过开挖的方式寻找故障点,工作量大且影响变电站的正常运行.工程上采用腐蚀诊断的方法对接地网的腐蚀故障进行检测,中小型接地网腐蚀诊断的研究在原理、模型和工程应用等各方面的已基本完善,但大型接地网腐蚀在应用方面依然存在着测量节点选取盲目,工作量大等问题.利用所编的接地网腐蚀诊断程序,结合大型变电站接地网的实际结构和运行特点,对其腐蚀诊断进行了模拟实验,提出大型接地网腐蚀诊断优化方案:分块分步测量的方法.该方法在保证准确性的前提下,不仅能避免开挖、停电,且大大降低了腐蚀诊断的工作量,提高了工作效率.
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