浙江电力
浙江電力
절강전력
ZHEJIANG ELECTRIC POWER
2015年
6期
1-4
,共4页
直流输电线路%合成电场%屏蔽线%屏蔽网%措施
直流輸電線路%閤成電場%屏蔽線%屏蔽網%措施
직류수전선로%합성전장%병폐선%병폐망%조시
DC transmission lines%synthetic electric field%shielding wire%shielding mesh%measures
直流输电线路电晕放电所产生的空间离子会使得地面附近的电场大幅增加，产生合成电场问题。为了降低线路下方某些敏感区域的合成电场，需要采取一些屏蔽措施。采用通量线法对屏蔽线和屏蔽网2种合成电场屏蔽措施进行定量计算分析，结果显示屏蔽网的屏蔽效果更好，屏蔽线更适合用于大区域的合成电场屏蔽。指出了这2种屏蔽措施在实际应用中需要注意的问题。
直流輸電線路電暈放電所產生的空間離子會使得地麵附近的電場大幅增加，產生閤成電場問題。為瞭降低線路下方某些敏感區域的閤成電場，需要採取一些屏蔽措施。採用通量線法對屏蔽線和屏蔽網2種閤成電場屏蔽措施進行定量計算分析，結果顯示屏蔽網的屏蔽效果更好，屏蔽線更適閤用于大區域的閤成電場屏蔽。指齣瞭這2種屏蔽措施在實際應用中需要註意的問題。
직류수전선로전훈방전소산생적공간리자회사득지면부근적전장대폭증가，산생합성전장문제。위료강저선로하방모사민감구역적합성전장，수요채취일사병폐조시。채용통량선법대병폐선화병폐망2충합성전장병폐조시진행정량계산분석，결과현시병폐망적병폐효과경호，병폐선경괄합용우대구역적합성전장병폐。지출료저2충병폐조시재실제응용중수요주의적문제。
The ions generated by corona discharge on DC transmission lines will enhance the ground level electric field substantially, resulting in synthetic electric field. Shielding measures is probably necessary to reduce synthetic electric field around sensitive objects under the lines. This paper uses the flux tracing method to analyze the shielding effect of shielding wire and shielding mesh. The results show that the shield-ing mesh has better shielding effect, while the shielding wire is more appropriate for synthetic electric field shielding in large areas. Several precautions in application of the two shielding measures are proposed.
