高电压技术
高電壓技術
고전압기술
HIGH VOLTAGE ENGINEERING
2010年
2期
301-305
,共5页
特高压%直流输电%可靠性%可用率%共用接地极%向家坝-上海特高压直流工程
特高壓%直流輸電%可靠性%可用率%共用接地極%嚮傢壩-上海特高壓直流工程
특고압%직류수전%가고성%가용솔%공용접지겁%향가패-상해특고압직류공정
UHV%DC%reliability%availability%comment electrode%XS800 UHV DC project
根据向家坝-上海±800 kV特高压直流输电系统采用双换流器串联的主回路结构特点,以及国内已投运的远距离直流输电系统的可靠性、可用率统计数据,建立了向家坝-上海±800 kV直流系统可靠性评价模型,对每极双换流器串联的直流系统的可靠性进行了计算,提出了±800 kV直流系统可靠性指标.利用该模型,对2个直流系统同时发生同极性单极故障的故障率进行了计算,评估了向家坝-上海±800 kV特高压直流输电工程共用接地极的可靠性和影响.
根據嚮傢壩-上海±800 kV特高壓直流輸電繫統採用雙換流器串聯的主迴路結構特點,以及國內已投運的遠距離直流輸電繫統的可靠性、可用率統計數據,建立瞭嚮傢壩-上海±800 kV直流繫統可靠性評價模型,對每極雙換流器串聯的直流繫統的可靠性進行瞭計算,提齣瞭±800 kV直流繫統可靠性指標.利用該模型,對2箇直流繫統同時髮生同極性單極故障的故障率進行瞭計算,評估瞭嚮傢壩-上海±800 kV特高壓直流輸電工程共用接地極的可靠性和影響.
근거향가패-상해±800 kV특고압직류수전계통채용쌍환류기천련적주회로결구특점,이급국내이투운적원거리직류수전계통적가고성、가용솔통계수거,건립료향가패-상해±800 kV직류계통가고성평개모형,대매겁쌍환류기천련적직류계통적가고성진행료계산,제출료±800 kV직류계통가고성지표.이용해모형,대2개직류계통동시발생동겁성단겁고장적고장솔진행료계산,평고료향가패-상해±800 kV특고압직류수전공정공용접지겁적가고성화영향.
Based on the series connection configuration of two 12-pulse converters in ±800 kV UHV DC links and reliability and availability figures of practical operation of HVDC links in China, the philosophy of reliability evalua-tion model of Xiangjiaba-Shanghai (i.e.XS800) UHV DC system was presented, also the reliability and availability was calculated and the reliability index was proposed based on the calculation result.Based on the model, the influ-ence to XS800 HVDC link arise from sharing the comment electrode was also evaluated.
