考虑特高压送风电的湖北电网调峰方案

Hubei Power Grid peak load regulation considering wind power transmitted by UHV network

以特高压送风电情况下湖北电网的电力电量消纳为背景,基于模糊分时段负荷预测和改进小生境遗传算法,对2015年丰大方式下湖北电网的调峰方案进行了研究。建立了以有功损耗最小为目标,计及机组爬坡速率约束以及系统安全约束的优化调度模型,制定了特高压送不同风电比例情况下湖北电网的调峰方案。仿真结果表明,2015年丰大方式下,特高压送风电时,湖北电网调峰能力不足,需要特高压参与调峰。采用所提方法制定的调峰方案与传统方法相比,在确保系统安全运行的前提下,充分利用了火电及抽水蓄能机组的调节能力,有效减少了网损。

Based on the load forecast with fuzzy period and the improved niche genetic algorithm,the peak load regulation considering the wind power transmitted by UHV network in 2015＇ wet season mode is researched for Hubei Power Grid according to its power consumption. With the minimum power loss as its goal and the unit ramp rate and system security as its constraints,an optimal dispatch model is established and a peak load regulation scheme of Hubei Power Grid is planed for different proportions of wind power transmitted by UHV network. Simulative result shows that,in case of wind power transmitted by UHV network in 2015＇ wet season mode,the peak load regulation ability of Hubei Power Grid is not sufficient and the UHV network should take part in it. Compared with traditional ones,the proposed peak load regulation scheme ,on the premise of safe system operation ,fully utilizes the peak load regulation capability of thermal and pumped storage units and effectively reduces the net loss.