电网技术
電網技術
전망기술
POWER SYSTEM TECHNOLOGY
2013年
10期
2681-2688
,共8页
1 000 kV%±800 kV%输电系统%可靠性%模型%评价方法%稳定措施%经济性
1 000 kV%±800 kV%輸電繫統%可靠性%模型%評價方法%穩定措施%經濟性
1 000 kV%±800 kV%수전계통%가고성%모형%평개방법%은정조시%경제성
1 000 kV%±800 kV%transmission system%reliability%model%evaluation method%stability measures%economy
根据1000 kV/±800 kV交/直流输电系统结构建立基于确定性指标的输电系统串并联可靠性模型，提出评估方法，以相关的元器件和子系统实际运行可靠性指标评估两种输电系统可靠性，比较分析两种输电系统可靠性的特点，讨论两种输电系统强迫停运对电网运行稳定性的影响以及保持电网运行稳定措施的经济性。分析结果表明：1000 kV大容量远距离交流输电系统的可靠性明显高于±800 kV 直流输电系统；1000 kV双回路交流输电系统，±800 kV直流输电系统按实际可利用功率运行，“单极闭锁联动调制”稳定控制可显著提高电力系统稳定性。
根據1000 kV/±800 kV交/直流輸電繫統結構建立基于確定性指標的輸電繫統串併聯可靠性模型，提齣評估方法，以相關的元器件和子繫統實際運行可靠性指標評估兩種輸電繫統可靠性，比較分析兩種輸電繫統可靠性的特點，討論兩種輸電繫統彊迫停運對電網運行穩定性的影響以及保持電網運行穩定措施的經濟性。分析結果錶明：1000 kV大容量遠距離交流輸電繫統的可靠性明顯高于±800 kV 直流輸電繫統；1000 kV雙迴路交流輸電繫統，±800 kV直流輸電繫統按實際可利用功率運行，“單極閉鎖聯動調製”穩定控製可顯著提高電力繫統穩定性。
근거1000 kV/±800 kV교/직류수전계통결구건립기우학정성지표적수전계통천병련가고성모형，제출평고방법，이상관적원기건화자계통실제운행가고성지표평고량충수전계통가고성，비교분석량충수전계통가고성적특점，토론량충수전계통강박정운대전망운행은정성적영향이급보지전망운행은정조시적경제성。분석결과표명：1000 kV대용량원거리교류수전계통적가고성명현고우±800 kV 직류수전계통；1000 kV쌍회로교류수전계통，±800 kV직류수전계통안실제가이용공솔운행，“단겁폐쇄련동조제”은정공제가현저제고전력계통은정성。
Based on the structure of 1 000 kV/±800 kV UHVAC/UHVDC transmission system, a determinacy index based reliability model of series-parallel power transmission system is built and a reliability assessment method, in which the reliability of the two kinds of power transmission system is assessed by actual operational reliability indices of related components and sub-systems, is proposed. The features of the reliability of the two kinds of power transmission systems are compared and analyzed; the comparative analysis on impacts of the forced outage of the two kinds of transmission systems on power grid operation stability as well as the economy of the measures to maintain operation stability of power grid are discussed. Analysis results show that the reliability of high-capacity long-distance 1 000 kV AC transmission system is obviously higher than that of ±800 kV DC transmission system;when 1 000 kV AC transmission system is operated in double circuit mode and ±800 kV DC transmission system is operated in practical available capacity mode, the power grid stability can be evidently improved by use of linked modulation under monopole blocking.
