广东电力
廣東電力
엄동전력
GUANGDONG ELECTRIC POWER
2014年
7期
106-110,115
,共6页
电网规划%闭式双回网络%供电能力%“N-1”原则%热稳极限
電網規劃%閉式雙迴網絡%供電能力%“N-1”原則%熱穩極限
전망규화%폐식쌍회망락%공전능력%“N-1”원칙%열은겁한
power grid planning%closed double loop network%power supply capacity%“N-1”principle%heat stability limit
在电网规划阶段，一般采用对规划电网进行潮流计算的方式校核电网供电能力，该方法缺乏前瞻性，难以指导电网长远发展。闭式双回网络是国内大多数城市发展220 kV电网的主体电网结构，其精确的供电能力计算对网络参数要求较严苛，而在电网规划阶段难以准确全面获取。通过分析城市220 kV 闭式双回网络的特点，基于工程上可接受的近似和假设，提出了对220 kV闭式双回网络供电能力进行评估的方法，能够有效且快速地对220 kV闭式双回网络的供电能力进行评估，进而把网络供电能力与变电站的规划建设规模相匹配。通过对典型220 kV闭式双回网络供电能力的评估，提出了与网络结构相匹配的变电站建设规模的建议，发挥电网的最大供电能力，提高电网建设的经济性。
在電網規劃階段，一般採用對規劃電網進行潮流計算的方式校覈電網供電能力，該方法缺乏前瞻性，難以指導電網長遠髮展。閉式雙迴網絡是國內大多數城市髮展220 kV電網的主體電網結構，其精確的供電能力計算對網絡參數要求較嚴苛，而在電網規劃階段難以準確全麵穫取。通過分析城市220 kV 閉式雙迴網絡的特點，基于工程上可接受的近似和假設，提齣瞭對220 kV閉式雙迴網絡供電能力進行評估的方法，能夠有效且快速地對220 kV閉式雙迴網絡的供電能力進行評估，進而把網絡供電能力與變電站的規劃建設規模相匹配。通過對典型220 kV閉式雙迴網絡供電能力的評估，提齣瞭與網絡結構相匹配的變電站建設規模的建議，髮揮電網的最大供電能力，提高電網建設的經濟性。
재전망규화계단，일반채용대규화전망진행조류계산적방식교핵전망공전능력，해방법결핍전첨성，난이지도전망장원발전。폐식쌍회망락시국내대다수성시발전220 kV전망적주체전망결구，기정학적공전능력계산대망락삼수요구교엄가，이재전망규화계단난이준학전면획취。통과분석성시220 kV 폐식쌍회망락적특점，기우공정상가접수적근사화가설，제출료대220 kV폐식쌍회망락공전능력진행평고적방법，능구유효차쾌속지대220 kV폐식쌍회망락적공전능력진행평고，진이파망락공전능력여변전참적규화건설규모상필배。통과대전형220 kV폐식쌍회망락공전능력적평고，제출료여망락결구상필배적변전참건설규모적건의，발휘전망적최대공전능력，제고전망건설적경제성。
In the stage of power grid planning,it usually uses load flow calculation on planning power grid to check power supply capacity of the grid.But for lacking of foresight,this method is hard to guide long-term development of the power grid.Closed double loop network is the major structure of 220 kV power grid developed in most cities in domestic of which precise calculation on power supply capacity has strict requirement for network parameter which is hard to correctly get in the stage of power grid planning.By analyzing characteristic of 220 kV closed loop network and on the basis of acceptable similarity and supposition in engineering,this paper proposes a method for estimating power supply capacity of 220 kV closed loop network which is able to effectively and rapidly estimate power supply capacity of the network and match the power supply capacity with planning construction scale of the substation.Based on estimating power supply capacity of typical 220 kV closed loop network,this paper proposes suggestion for substation construction scale in order to develop maximum power supply capacity of the power grid and improve economy of grid construction.
