考虑电池寿命和过放现象的风电场储能容量优化

发布时间：2018-01-09 07:38

本文关键词：考虑电池寿命和过放现象的风电场储能容量优化　出处：《电网技术》2014年06期 　论文类型：期刊论文

【摘要】：风电接入量的增加给电网的安全稳定运行带来了挑战。引入储能系统使风功率输出最大程度地满足期望输出,以减小风电不稳定特性造成的影响。将放电深度及过放现象等造成的寿命损伤折合为运行成本,将未满足期望输出部分的能量折合为惩罚成本,同时考虑储能设备的固有成本,以这三部分综合经济成本最小为优化目标,以功率约束、容量约束、电池寿命约束为约束条件,以遗传算法为求解方法,求解最优的储能容量。算例分析结果表明,采用该方法求得的最优容量,既可以保证较小的经济成本,也可以将功率波动控制在较小范围内。此外,对运行成本、惩罚成本、固有成本的关系进行了分析,证明了引入运行成本的必要性。
[Abstract]:The increase of wind power access brings challenges to the safe and stable operation of the power grid. The introduction of the energy storage system makes the wind power output meet the expected output to the maximum extent. In order to reduce the influence caused by wind power instability, the damage caused by discharge depth and overdischarge is reduced to the operating cost, and the energy that does not meet the expected output is converted into the penalty cost. At the same time, considering the inherent cost of energy storage equipment, taking the minimum comprehensive economic cost of these three parts as the optimization objective, taking power constraints, capacity constraints, battery life constraints as constraints, and genetic algorithm as the solution method. The result of example analysis shows that the optimal capacity obtained by this method can not only guarantee less economic cost, but also control the power fluctuation in a small range. The relationship among operation cost, penalty cost and inherent cost is analyzed, and the necessity of introducing running cost is proved.
【作者单位】：国网青岛供电公司;电网智能化调度与控制教育部重点实验室(山东大学);国网山东省电力公司科学研究院;国网潍坊供电公司;
【基金】：国家自然科学基金项目(51307101,51177091)~~
【分类号】：TM614
【正文快照】： 0引言截至2013年初,全国风电装机容量达7 532万kW,位居世界第一[1]。风电接入量的增加及其波动特性和间歇特性给电网的安全稳定运行带来了挑战。在风力较大时,为避免风机所发的较大功率对电网造成冲击,需要部分弃风;在无风状态下,部分风机仍同电网连接,发电机从电网中吸收有功

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