四川电力技术
四川電力技術
사천전력기술
SICHUAN ELECTRIC POWER TECHNOLOGY
2013年
4期
1-5,36
,共6页
石超群%朱军%吴静文%吴驰%吴广宁%邱璆
石超群%硃軍%吳靜文%吳馳%吳廣寧%邱璆
석초군%주군%오정문%오치%오엄저%구구
等效电荷法%共用走廊%工频电场%相序布置%接近距离%对地高度
等效電荷法%共用走廊%工頻電場%相序佈置%接近距離%對地高度
등효전하법%공용주랑%공빈전장%상서포치%접근거리%대지고도
charge equivalent method%common corridor%power-frequency electric field%phase sequence arrangement%ap-proaching distance%clearance of conductor to the ground
超/特高压线路共用走廊架设时，由于导线数目多，电压等级不同，所以影响电场分布的因素较多，为了分析超/特高压输电线路共用走廊架设时线路下方的电场分布，基于等效电荷法建立了共用走廊时工频电场的计算模型，利用Matlab编制计算程序，仿真分析了共用走廊时输电线路下方距离地面1．5 m处的电场分布。重点讨论了超/特高压输电线路的相序排列、接近距离以及导线最小对地高度对整个输电走廊电场分布的影响。研究表明超/特高压共用走廊时导线的相序排列和导线最小对地高度对场强最大值有较大影响，高场强覆盖区域与接近距离成线性增长关系。结合电磁环境评估标准，提出了超/特高压共用走廊架设时建议采用的相序布置，接近距离和导线最小对地高度。
超/特高壓線路共用走廊架設時，由于導線數目多，電壓等級不同，所以影響電場分佈的因素較多，為瞭分析超/特高壓輸電線路共用走廊架設時線路下方的電場分佈，基于等效電荷法建立瞭共用走廊時工頻電場的計算模型，利用Matlab編製計算程序，倣真分析瞭共用走廊時輸電線路下方距離地麵1．5 m處的電場分佈。重點討論瞭超/特高壓輸電線路的相序排列、接近距離以及導線最小對地高度對整箇輸電走廊電場分佈的影響。研究錶明超/特高壓共用走廊時導線的相序排列和導線最小對地高度對場彊最大值有較大影響，高場彊覆蓋區域與接近距離成線性增長關繫。結閤電磁環境評估標準，提齣瞭超/特高壓共用走廊架設時建議採用的相序佈置，接近距離和導線最小對地高度。
초/특고압선로공용주랑가설시，유우도선수목다，전압등급불동，소이영향전장분포적인소교다，위료분석초/특고압수전선로공용주랑가설시선로하방적전장분포，기우등효전하법건립료공용주랑시공빈전장적계산모형，이용Matlab편제계산정서，방진분석료공용주랑시수전선로하방거리지면1．5 m처적전장분포。중점토론료초/특고압수전선로적상서배렬、접근거리이급도선최소대지고도대정개수전주랑전장분포적영향。연구표명초/특고압공용주랑시도선적상서배렬화도선최소대지고도대장강최대치유교대영향，고장강복개구역여접근거리성선성증장관계。결합전자배경평고표준，제출료초/특고압공용주랑가설시건의채용적상서포치，접근거리화도선최소대지고도。
The number of conductor with different voltage level is more complicated than single circuit when EHV and UHV transmission lines are erected in the common corridor , so there are many factors which will influence the distribution of electric field.The calculation model of power -frequency electric field is established based on charge equivalent method in order to analyze the distribution of electric field when using the common corridor , and Matlab is utilized to develop simulation program for the visible analysis of electric field distribution under the transmission lines at 1.5 m above the ground .The discussion lays emphasis upon some influencing factors to the distribution of electric field in the transmission corridor , such as the phase se-quence of EHV and UHV transmission lines , the approaching distance between EHV and UHV transmission lines , and the clearance of conductor to the ground .Research shows that the phase sequence and the clearance of conductor to the ground have a great influence on the maximum of electric field , and there is a linear growth relationship between high -intensity cov-erage area of electric field and the approaching distance .Finally, the suggested phase sequence , approaching distance and clearance of conductor to the ground when EHV and UHV transmission lines are erected in the common corridor are proposed according to the criterion of electromagnetic environmental evaluation .
