云南电力技术
雲南電力技術
운남전력기술
YUNNAN ELECTRIC POWER
2015年
1期
124-128
,共5页
直流高压输电%交直流同塔架设%PSCAD电磁暂态仿真
直流高壓輸電%交直流同塔架設%PSCAD電磁暫態倣真
직류고압수전%교직류동탑가설%PSCAD전자잠태방진
high-voltage DC transmission%AC&DC transmission line on the same tower%PSCAD simulation
本文采用PSCAD－EMTDC电磁暂态软件建立了交直流输电系统和同塔输电模型，研究了交直流线路在同塔输电时直流输电线路发生单极接地故障条件下的交直流线路过电压水平变化及其影响。仿真并分析了交流输电线路不同排列方式，是否换位对交直流线路过电压的影响。经过仿真和数据分析，得出了以上因素下交直流线路在直流故障情况下的过电压的大小及其变化趋势，并且分析了过电压发生变化的原因。
本文採用PSCAD－EMTDC電磁暫態軟件建立瞭交直流輸電繫統和同塔輸電模型，研究瞭交直流線路在同塔輸電時直流輸電線路髮生單極接地故障條件下的交直流線路過電壓水平變化及其影響。倣真併分析瞭交流輸電線路不同排列方式，是否換位對交直流線路過電壓的影響。經過倣真和數據分析，得齣瞭以上因素下交直流線路在直流故障情況下的過電壓的大小及其變化趨勢，併且分析瞭過電壓髮生變化的原因。
본문채용PSCAD－EMTDC전자잠태연건건립료교직류수전계통화동탑수전모형，연구료교직류선로재동탑수전시직류수전선로발생단겁접지고장조건하적교직류선로과전압수평변화급기영향。방진병분석료교류수전선로불동배렬방식，시부환위대교직류선로과전압적영향。경과방진화수거분석，득출료이상인소하교직류선로재직류고장정황하적과전압적대소급기변화추세，병차분석료과전압발생변화적원인。
This article use the PSCAD-EMTDC software to build a model of AC and DC transmission system which make the AC and DC transmission line on the same tower. Analysis the hybrid line’ s overvoltage level and its trends when the DC transmission line under the single-pole ground fault. Design different arrangement modes of AC transmission line, whether the AC transmission line exchange the transposition to simulate the overvoltage of same tower system. Also make the DC transmission line on the different fault condition, different operation modes and different length to simulate the overvoltage of the single-pole ground fault of the DC transmission line. Through the model simulation and data analysis, it should draw the size and trend of transmission line’ s over￣voltage, and analyze the reason of the change of overvoltage.
