储能电池参与电网快速调频的自适应控制策略

发布时间：2018-04-27 23:24

本文选题：储能电池 + 快速调频　；参考：《高电压技术》2017年07期

【摘要】：为充分利用储能对电网调频性能的改善作用,对储能电池参与电网快速调频的控制策略展开了研究。通过分析含储能电池的区域电网幅频特性,得到电网可承受的最大负荷扰动范围;兼顾电网调频控制要求和储能电池容量限制因素,提出一种考虑储能电池荷电状态(SOC)因素的调频自适应控制策略,并给出了储能电池参与调频的时域评价指标;最后以典型区域电网为例对该策略进行仿真验证。结果表明:所提策略能较大幅度提升区域电网所能承受的负荷扰动最大值,即改善电网的抗干扰能力;相较其他控制策略,其在短时扰动(阶跃负荷扰动)工况下,改善频率指标的效果更为显著,而在长时扰动(连续负荷扰动)工况下,其在储能电池SOC指标效果上更有优势。研究结果验证了所提方法的有效性和优势。
[Abstract]:In order to make full use of energy storage to improve the performance of power grid FM, the control strategy of energy storage battery participating in power grid fast frequency modulation is studied. By analyzing the amplitude-frequency characteristics of the regional power network with energy storage cells, the maximum load disturbance range of the power network can be obtained, which takes into account the requirements of power grid frequency modulation control and the limiting factors of the capacity of the energy storage cells. This paper presents an adaptive frequency modulation control strategy considering the charge state of the energy storage cell (SOC), and gives the time domain evaluation index of the energy storage cell participating in the frequency modulation, and finally takes the typical regional power grid as an example to verify the strategy. The results show that the proposed strategy can greatly enhance the maximum load disturbance that the regional power network can withstand, that is, improve the anti-interference ability of the power network, and compare with other control strategies, it can be used in the short-term disturbance (step load disturbance) condition. The effect of improving the frequency index is more obvious, but under the condition of long time disturbance (continuous load disturbance), it has more advantages on the SOC index of energy storage battery. The results verify the effectiveness and advantages of the proposed method.
【作者单位】：湖南大学电气与信息工程学院;国网湖南省电力公司长沙供电分公司;
【基金】：国家自然科学基金(51477043) 湖南省科技重大专项(2016GK1003)~~
【分类号】：TM712;TM912

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