引用本文: | 郄朝辉,黄慧,李威,等.周期通信对储能系统参与电网调频的影响分析[J].电力系统保护与控制,2020,48(1):41-47.[点击复制] |
QIE Zhaohui,HUANG Hui,LI Wei,et al.Analysis of the influence of periodic communication on the participation of energy storage system in power grid frequency modulation[J].Power System Protection and Control,2020,48(1):41-47[点击复制] |
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摘要: |
随着新能源并网功率逐步增加,跨区直流替换传统机组,电网调节能力不断下降。储能系统双向功率快速控制的优势,为电网频率控制提供了更多手段。根据储能系统和电网设备间大量使用周期通信方式的现状,定量计算了可能引发电网频率振荡的通信周期范围。通过分析目前运行的园区电网频率振荡过程,得出是由周期通信定值设置不合理引发频率振荡的结论。通过实际降低周期值,未发生类似现象。根据该电网和储能实际参数,建立了包含储能系统周期通信及功率控制的电网仿真系统。仿真系统频率响应过程与实际电网频率振荡周期、幅值一致。对不同的低通信周期情况进行了仿真,系统扰动后未出现频率振荡过程,验证了定量计算结果的正确性,也支撑了电网实际修改周期定值的有效性。 |
关键词: 周期通信 储能 电网调频 频率振荡 |
DOI:10.19783/j.cnki.pspc.190227 |
投稿时间:2019-03-04修订日期:2019-09-05 |
基金项目:国家电网公司科技项目资助(SGJSDK00DWJS1900 312):“电化学储能电站群在特高压交直流混联受端电网应用关键技术研究及示范”;国网江苏省电力有限公司科技项目资助(J2019027):“大容量储能支撑机网安全稳定运行关键技术研究” |
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Analysis of the influence of periodic communication on the participation of energy storage system in power grid frequency modulation |
QIE Zhaohui,HUANG Hui,LI Wei,SU Dawei,HU Yang,ZOU Yan,ZHOU Ting |
(NARI Group Corporation/State Grid Electric Power Research Institute, Nanjing 211106, China;State Grid Jiangsu Electric Power Co., Ltd., Nanjing 210024, China) |
Abstract: |
With the gradual increase of grid-connected power of new energy sources and the replacement of traditional units by cross-region DC, the grid regulation capability continues to decline. The advantages of bi-directional power fast control of energy storage system provide more means for power grid frequency control. According to the current situation of large-scale use of periodic communication between energy storage systems and grid equipment, the communication period range which may cause power grid frequency oscillation is calculated quantitatively. By analyzing the current campus power grid frequency oscillation process, it is concluded that the frequency oscillation is caused by the unreasonable setting of the periodic communication setting. By actually reducing the period value, no similar phenomenon occurs. According to the actual parameters of the power grid and energy storage system, a power grid simulation system including periodic communication and power control of the energy storage system is established. The frequency response process is consistent with the frequency oscillation period and amplitude of the actual power grid. The simulation results under different low communication periods show that there is no frequency oscillation after the system disturbance, which verifies the correctness of the quantitative calculation results and also supports the effectiveness of the grid to actually modify the fixed period setting. This work is supported by Science and Technology Project of State Grid Corporation of China (No. SGJSDK00DWJS 1900312):“Application Key Techniques Research and Demonstration of Electrochemistry Energy Storage Substation Cluster in UHV AC/DC Hybrid Receiving Power Grid”, and Science and Technology Project of State Grid Jiangsu Electric Power Co., Ltd. (No. J2019027):“Key Techniques Research on High-capacity Energy Storage Supporting the Safe and Stable Operation of Generator and Grid”. |
Key words: periodic communication energy storage power grid frequency modulation frequency oscillation |