考虑约束的微电网储能运行模式智能切换仿真  

Simulation of Smart Switching of Energy Storage Operation Mode in Microgrid Considering Constraints

作　　者：岳昊 岳云力 武冰清 杨树 YUE Hao;YUE Yun-li;WU Bing-qing;YANG Shu(State Grid Jibei Electric Power Economic Research Institute,BeiJing 100038,China;China Agricultural University,BeiJing 100091,China)

机构地区：[1]国网冀北电力有限公司经济技术研究院,北京100038 [2]中国农业大学,北京100091

出　　处：《计算机仿真》2024年第12期117-121,共5页Computer Simulation

基　　金：国网冀北经研院2023科研项目(SGJBJY00GPJS2310018)。

摘　　要：当微电网电压与频率波动幅度较大时,储能系统需要更加频繁地进行充放电操作以维持电网的稳定,增加了储能运行模式切换控制的难度。为了确保微电网在不同运行条件下,能够快速、准确地切换到最佳储能运行模式,以实现更精准有效的储能管理,提出一种用户侧微电网储能运行模式切换控制方法。对用户侧微电网储能系统的组成单元及其运行特性展开分析,深入了解储能系统的运行机制。根据用户侧微电网储能系统的运行特性,在下垂控制和恒定电压控制方式下对储能变流器展开切换,并对直流母线电压展开分级,同时设定相关的约束条件,满足约束条件下微电网可以在自主运行和电能交易模式下稳定运行,由此实现用户侧微电网储能运行模式切换控制。仿真结果表明,所提方法控制下能够确保母线电压快速收敛至理想状态,且微电网频率波动幅度较小,说明其可以实现更加精准且有效的储能管理和控制,全面提升系统的适应性和可扩展性。When the microgrid voltage and frequency fluctuations are large,the energy storage system needs to carry out charging and discharging operations more frequently in order to maintain the stability of the grid,which increases the difficulty of the energy storage operation mode switching control.In order to ensure that the microgrid can quickly and accurately switch to the optimal energy storage operation mode under different operating conditions,and realize a more accurate and effective energy storage management,a user-side microgrid energy storage operation mode switching control method is proposed.The components and operating characteristics of the user-side microgrid energy storage system were analyzed to gain a deeper understanding of the operating mechanism of the energy storage system.According to the operating characteristics of the user-side microgrid energy storage system,the energy storage converter was switched under sag control and constant voltage control,the DC bus voltage was graded,and the relevant constraints were set,so that the microgrid can be operated stably under autonomous operation and power trading mode under the constraints,and the switching control of the user-side microgrid energy storage operation mode was thus realized.The simulation results show that the proposed method can ensure that the bus voltage converges to the ideal state quickly,and the frequency fluctuation of the microgrid is small,which indicates that it can realize more accurate and effective energy storage management and control,and comprehensively improve the adaptability and scalability of the system.

关 键 词：用户侧 微电网 储能运行模式 切换控制 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]