摘要
提出了一种省为实体的调度模式下多省区互补运行指标。首先计算各省区独立运行情况下的运行状态和功率交换需求,然后通过功率交换曲线的余缺互济,计算省间电网的互补能力,协调运行各省区电网运行,从而既保证各省区的独立性,又保证各省电力互济性,在求解方法上则大大简化,物理意义明确、操作简单。以青海电网为研究对象,应用所提指标将青海与周边省区的互补运行问题分解为长期购电和调峰互济两个子问题,采用基于全时段8 760 h生产模拟计算青海购电需求和其他省区的电力补充能力。在满足青海长期购电需求子问题中,用火电富裕较多的新疆解决青海季节性的缺电问题,并通过长期交易形式确定下来;对于临时性电力盈缺则通过与陕西以调峰互济方式加以解决。青海电网的仿真算例验证了方法的有效性。
A multi⁃provincial complementary operation in⁃dex under the province⁃based scheduling model is proposed.First⁃ly,the operating status and power exchange needs of each province is claculated under independent operating conditions,and then the complementarity of the inter⁃provincial grids is calculted through the complementarity of the power exchange curve,which not only ensures the independence of each provinces,but also ensures the mutual benefit of each province.The solution method is greatly simplified,the physical meaning is clear,and the operation is sim⁃ple.The simulation example of Qinghai practical power grid veri⁃fies the effectiveness of the proposed method.The problem of coor⁃dinated operation of Qinghai and surrounding provinces is decom⁃posed into two sub⁃problems:long⁃term power purchase and short⁃term load peak⁃sharing,using 8760 hour production simulation.In satisfying the sub⁃problem of long⁃term electricity purchase de⁃mand in Qinghai,Xinjiang province with excess thermal power is used to solved the problem of seasonal shortage of electricity in Qinghai,which is determined through long⁃term trading.For the temporary power surplus or shortage,it is solved by mutual aid in Shaanxi province.
作者
傅旭
李富春
杨攀峰
吴雄
FU Xu;LI Fuchun;YANG Panfeng;WU Xiong(Northwest Electric Power Design Institute Co.,Ltd.,China Power Engineering Consulting Group,Xi’an 700075,China;School of Electrical Engineering,Xi’an Jiaotong University,Xi’an 710049,China)
出处
《电力需求侧管理》
2021年第2期22-28,共7页
Power Demand Side Management
基金
国家自然科学基金资助项目(51807149)。
关键词
生产模拟
弃电率
协调运行
互补能力
production simulation
power abandoning rate
coordinated operation
complementary ability
