协调大规模风电汇聚外送的火电容量优化  

Capacity Optimization of Corollary Thermal Sources Transmitted with Large-Scale Clustering Wind Power

作　　者：侯婷婷[1] 娄素华[1] 张滋华[1] 吴耀武[1] 

机构地区：[1]华中科技大学强电磁工程与新技术国家重点实验室,武汉430074

出　　处：《电工技术学报》2012年第10期255-261,共7页Transactions of China Electrotechnical Society

基　　金：国家重点基础研究发展计划(973计划)(2012CB215100);国家自然科学基金重点项目(50937002973);国家自然科学青年基金(51207062)资助项目

摘　　要：针对风电基地风电外送的形势,提出了一种风电汇聚外送配套火电容量优化方法。针对风电的随机性,定义了输电通道的持续STC曲线,来分析输电通道输送风电后火电可用容量空间的特性。在此基础上,建立了风电外送配套火电容量优化模型,模型考虑了输电线路、配套火电的费用及输送电量收益,在风电优先外送的前提下,充分利用输电通道,使得经济效益最大化,并采用两层优化策略对模型进行求解。应用本文模型对一个算例系统进行了计算分析,并对电价和火电煤价对结果的影响进行了分析,结果证明了所提方法的正确性和有效性。ince wind power is explored on a large scale and in a highly centralized way these years,and usually wind bases are inconsistent with load in geographic region,so transmitting wind power through high-voltage transmission line will be an inevitable trend.In this new situation,the paper presents an optimal methodology for corollary thermal sources transmitted with wind power together for wind power’s variability and low energy density.For the random nature of wind power,the duration curve of spare capacity of transmission line（STC） which can be used to transmit thermal power is introduced to illustrate characteristics of capacity for thermal power after transmitting wind power.Based on the duration curve of STC,the model for optimizing the capacity of corollary thermal sources is proposed,which takes into account transmission line costs,thermal sources costs and benefit of electric power transmitted,and the objective function being maximized is the total benefits.The model can be solved by a two-stage optimal strategy.The case studies are carried out for a system,where effects of coal price and electricity price on the optimal schemes is also studied,and the results verify the effectiveness of the presented method.

关 键 词：风电基地 风电汇聚外送 配套火电容量优化 持续STC曲线 

分 类 号：TM715[电气工程—电力系统及自动化]