摘要
提出一种多因素影响下的输配网主变容量协同优化配置方法。通过梳理供电能力、负荷增长、负荷密度及供电半径、接线形式等多方面因素对主变容量配置的影响,建立多因素作用的耦合关系。在此基础上,通过对220 kV及110 kV电压等级接线方式及其匹配模式的研究,分析变电站及线路的容量匹配关系,进而计算其建设规模。结合变电站从初期规模至终期规模发展年限及设备的建设和运行费用,计算单位负荷供电成本,作为优化输配网主变容量的参考指标。既考虑了负荷的发展趋势及资金的时间价值,又考虑了多种典型接线方式及其匹配模式,为实际工程应用提供了灵活的处理方法。算例给出几种典型110kV构网模式下不同容量配置方案的经济性对比结果,并且对是否考虑负荷发展动态过程的结果进行对比,进一步阐明相关因素对容量配置带来的影响,验证了模型的合理性及适用性。
A coordinated optimization method for main transformer capacity in transmission and distribution network considering multi-factor influence was proposed.By carding the influence of power supply capacity,load growth,load density and supply radius,connection modes and other factors on main transformer capacity planning,the coupling relationship of multi-factor was established.Based on the research of 220 kV and 110 kV connection and matching modes,capacity matching and construction size of substation and transmission line were calculated.Furthermore,considering the substation development process from initial size to final size and the cost of construction and operation,supply cost of unit demand was calculated as a reference index for main transformer capacity optimization in transmission and distribution network.In the method presented,the load development trend,time value of funds and the connection and matching modes were considered.Thus a flexible method for engineering application was provided.Economic comparison of different main transformer capacity allocation schemes in typical 110 kV connection modes was presented,and results of whether the load development was considered were compared.Results of calculation indicate the influence of related factors on substation capacity allocation,which verifies the rationality and applicability of the method proposed.
作者
靳冰洁
高崇
梁晨
Jin Bingjie;Gao Chong;Liang Chen(Grid Planning&Research Center,Guangdong Power Grid Corporation,CSG,Guangzhou 510080,China;Maintenance&Test Center,UHV Power Transmission Company,CSG,Guangzhou 510663,China)
出处
《机电工程技术》
2021年第10期200-205,210,共7页
Mechanical & Electrical Engineering Technology
关键词
容量配置
协同优化
供电能力
接线形式
容量匹配
capacity planning
coordinated optimization
power supply capacity
connection mode
capacity matching
