山西电力
山西電力
산서전력
SHANXI ELECTRIC POWER
2014年
2期
31-36
,共6页
接地网%门型构架%腐蚀诊断
接地網%門型構架%腐蝕診斷
접지망%문형구가%부식진단
grounding grid%gate-type architecture%corrosion diagnosis
指出完整健康的接地网对电力系统的安全稳定运行至关重要。基于特勒根定理和电网络理论，提出了接地网导体腐蚀诊断的计算模型，研究了站内构架对诊断结果准确性的影响。以河南省周口市某110 kV变电站为例进行现场测试，结果表明，考虑钢型构架影响时，不论构架位置如何布置、数目多少，进行腐蚀诊断测试时其附近支路的腐蚀倍数要比不考虑构架影响时低，且腐蚀支路距离构架越近，腐蚀倍数降低越明显；当构架接于腐蚀支路两端时误差最大，而对距离构架较远的腐蚀支路的诊断结果基本上没有影响。
指齣完整健康的接地網對電力繫統的安全穩定運行至關重要。基于特勒根定理和電網絡理論，提齣瞭接地網導體腐蝕診斷的計算模型，研究瞭站內構架對診斷結果準確性的影響。以河南省週口市某110 kV變電站為例進行現場測試，結果錶明，攷慮鋼型構架影響時，不論構架位置如何佈置、數目多少，進行腐蝕診斷測試時其附近支路的腐蝕倍數要比不攷慮構架影響時低，且腐蝕支路距離構架越近，腐蝕倍數降低越明顯；噹構架接于腐蝕支路兩耑時誤差最大，而對距離構架較遠的腐蝕支路的診斷結果基本上沒有影響。
지출완정건강적접지망대전력계통적안전은정운행지관중요。기우특륵근정리화전망락이론，제출료접지망도체부식진단적계산모형，연구료참내구가대진단결과준학성적영향。이하남성주구시모110 kV변전참위례진행현장측시，결과표명，고필강형구가영향시，불론구가위치여하포치、수목다소，진행부식진단측시시기부근지로적부식배수요비불고필구가영향시저，차부식지로거리구가월근，부식배수강저월명현；당구가접우부식지로량단시오차최대，이대거리구가교원적부식지로적진단결과기본상몰유영향。
The integrity and soundness of grounding grid is crucial to the safe and stable operation of power system. Based on Tellegen’s theorem and electrical network theory,grounding conductor corrosion diagnosis model is proposed,which is used to study the impacts of gate-type architecture on the accuracy of the diagnosis results. A 110 kV substation at Zhoukou city in Henan province is taken for an example to test this model. The results show that when the impacts of the gate-type architecture are taken into account,the increasing multiples of branches resistance are smaller than that without the consider of the station architecture,regardless of the position of station architecture. When corrosion branches are nearer to the station architecture,the measurement error is bigger,and vice versa.
