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Research on the control strategy of energy storage participation in power system frequency regulation
International Transactions on Electrical Energy Systems ( IF 1.9 ) Pub Date : 2020-10-22 , DOI: 10.1002/2050-7038.12676 Junhui Li 1 , Zhuo Gao 1 , Gang Mu 1 , Xingkai Fan 2 , Zheshen Zhang 1 , Jiajun Zou 3
International Transactions on Electrical Energy Systems ( IF 1.9 ) Pub Date : 2020-10-22 , DOI: 10.1002/2050-7038.12676 Junhui Li 1 , Zhuo Gao 1 , Gang Mu 1 , Xingkai Fan 2 , Zheshen Zhang 1 , Jiajun Zou 3
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Large‐scale wind power integrated the power system may result in a challenge for frequency regulation because of the variable nature of wind. Energy storage system (ESS) is an effective measure against the challenge of frequency regulation caused by wind power. Aiming to solve the problem that the response time of traditional turbines can hardly meet frequency regulation demand, this article proposes a strategy for ESS which can adaptively adjust the output coefficient of ESS according its state of charge (SOC). And the relationship between the frequency regulation effect and the size of ESS is established. Firstly, the reference power of ESS is obtained based on fuzzy theory. Secondly, the principle of giving priority to ESS is adopted, and the actual output is determined according to the SOC. Finally, the output of the thermal power unit is determined based on the penalty power of ESS. The case analyzed shows that the proposed strategy has a significant effect on the improvement of the frequency deviation and the CPS1, and the maintenance of SOC. Moreover, it is shown that the 100 MW/50 MWh ESS can increase the CPS1 index by 57.1% in response to the AGC frequency regulation.
中文翻译：
储能参与电力系统频率调节的控制策略研究
由于风的可变性，大规模集成了电力系统的风电可能会给频率调节带来挑战。储能系统（ESS）是一种有效的措施，可应对风力发电带来的频率调节挑战。为了解决传统涡轮机的响应时间几乎不能满足调频需求的问题，提出了一种ESS的策略，该策略可以根据其荷电状态（SOC）自适应地调节ESS的输出系数。并建立了调频效果与ESS的大小之间的关系。首先，基于模糊理论获得了ESS的参考功率。其次，采用优先考虑ESS的原理，并根据SOC确定实际输出。最后，根据ESS的惩罚功率确定火电单元的输出。实例分析表明，所提出的策略对改善频率偏差和CPS1，以及保持SOC有重要影响。此外，表明响应于AGC频率调节，100 MW / 50 MWh ESS可将CPS1指数提高57.1％。
更新日期：2020-12-07
中文翻译：
储能参与电力系统频率调节的控制策略研究
由于风的可变性，大规模集成了电力系统的风电可能会给频率调节带来挑战。储能系统（ESS）是一种有效的措施，可应对风力发电带来的频率调节挑战。为了解决传统涡轮机的响应时间几乎不能满足调频需求的问题，提出了一种ESS的策略，该策略可以根据其荷电状态（SOC）自适应地调节ESS的输出系数。并建立了调频效果与ESS的大小之间的关系。首先，基于模糊理论获得了ESS的参考功率。其次，采用优先考虑ESS的原理，并根据SOC确定实际输出。最后，根据ESS的惩罚功率确定火电单元的输出。实例分析表明，所提出的策略对改善频率偏差和CPS1，以及保持SOC有重要影响。此外，表明响应于AGC频率调节，100 MW / 50 MWh ESS可将CPS1指数提高57.1％。
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