摘要
为解决可再生能源接入电力系统导致系统频率稳定性下降的问题,将虚拟同步发电机(virtual synchronous generator,VSG)控制策略和优化算法相结合,提出了一种基于算法优化的VSG控制策略。对蚁狮算法进行改进并用于优化VSG的参数,使VSG的性能达到最佳;最后,将优化的VSG用于并网逆变器的控制;建立电力系统仿真模型,并与传统控制方案进行对比测试,结果表明:优化的VSG控制策略降低了系统频率波动的幅值和时间,阶跃负荷扰动下频率波动幅值降低了约0.00042 Hz,波动时间降低了约1.5 s,提高了可再生能源电力系统的频率稳定性。
In order to solve the problem of system frequency stability decreasing caused by the access of renewable energy to the power system,the control strategy of virtual synchronous generator(VSG)is combined with optimization algorithm to propose a VSG control strategy based on algorithm optimization.The Antlion algorithm is improved to optimize the parameters of the VSG and maximize the performance of the VSG.The optimized VSG is used to control the grid-connected inverter.The power system simulation model is established and compared with traditional control scheme.The results show that the optimized VSG control strategy reduces the amplitude and time of system frequency fluctuations,the amplitude of frequency fluctuation under step load disturbance is reduced by about 0.00042 Hz,and the fluctuation time is reduced by about 1.5 s,which improves the frequency stability of the renewable energy power system.
作者
李玲玲
冯欢
LI Ling-ling;FENG Huan(State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300130,China;Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province,Hebei University of Technology,Tianjin 300130,China)
出处
《天津工业大学学报》
CAS
北大核心
2021年第5期81-88,共8页
Journal of Tiangong University
基金
天津市自然科学基金资助项目(19JCZDJC32100)
河北省自然科学基金资助项目(F2018202282)。
关键词
可再生能源
电力系统
虚拟同步发电机
改进蚁狮算法
频率控制
renewable energy
power system
virtual synchronous generator(VSG)
improved Antlion algorithm
frequency control
