电气技术
電氣技術
전기기술
ELECTRICAL ENGINEERING
2012年
3期
6-9
,共4页
特高压直流输电%电晕%离子流%标称场强%空间电荷
特高壓直流輸電%電暈%離子流%標稱場彊%空間電荷
특고압직류수전%전훈%리자류%표칭장강%공간전하
UHVDC transmission%electric corona%ion flow%nominal electric field%space charges
针对特高压直流输电导线发生电晕的情况，采取测量试验来探究直流导线产生电晕以后导线下方的离子流对地面电场的影响。通过试验，得出直流导线产生电晕以后导线下方的合成场强、标称场强、空间电荷场强分别与导线电位成线性关系，正、负极导线放电电晕情况有差异以及标称场强在合成场强中的比重随高度变化而改变等。
針對特高壓直流輸電導線髮生電暈的情況，採取測量試驗來探究直流導線產生電暈以後導線下方的離子流對地麵電場的影響。通過試驗，得齣直流導線產生電暈以後導線下方的閤成場彊、標稱場彊、空間電荷場彊分彆與導線電位成線性關繫，正、負極導線放電電暈情況有差異以及標稱場彊在閤成場彊中的比重隨高度變化而改變等。
침대특고압직류수전도선발생전훈적정황，채취측량시험래탐구직류도선산생전훈이후도선하방적리자류대지면전장적영향。통과시험，득출직류도선산생전훈이후도선하방적합성장강、표칭장강、공간전하장강분별여도선전위성선성관계，정、부겁도선방전전훈정황유차이이급표칭장강재합성장강중적비중수고도변화이개변등。
For the situation that the electric corona happens on UHVDC transmission lines, a measure experiment to study the effect of ion flow on the ground electric field under the DC-wire after the electric corona appearing is proposed. By the experiment, the linear relation between the total electric field strength, the nominal electric field strength, the electric field strength of space charges and wire potential separately under the DC-wire after the electric corona appearing, the differences between corona discharge of positive and negative wire, the proportion of nominal electric field strength changing in total field strength with its height are obtained.
