| 引用本文: | 郭磊磊,贾凯阳,朱 虹,等.基于有功微分补偿与虚拟惯量自适应的光储VSG控制策略[J].电力系统保护与控制,2024,52(10):21-31. |
| GUO Leilei,JIA Kaiyang,ZHU Hong,et al.Control strategy for a PV energy storage VSG based on active power differentialcompensation and virtual inertia adaptive strategy[J].Power System Protection and Control,2024,52(10):21-31 |
|
| 摘要: |
| 针对传统光储虚拟同步发电机(virtual synchronous generator, VSG)存在并网有功稳态偏差与系统动态振荡难以兼顾的问题，提出一种基于有功微分补偿(active power differential compensation, APDC)与虚拟惯量自适应的光储VSG控制策略。首先，建立了基于APDC算法的光储VSG并网有功闭环小信号模型，并通过极点分布图与伯德图的分析，讨论了APDC算法对系统暂态振荡与有功稳态偏差的抑制效果，给出了相关系数的整定方法。然后，为改善频率响应并避免有功超调量的增加，设计了一种基于APDC算法的改进型虚拟惯量自适应策略，同时给出其参数的取值范围。最后，实验结果表明，所提策略能消除VSG并网有功的动态振荡与稳态偏差，具有更小的频率偏差与频率变化率。 |
| 关键词: 光储VSG 稳态偏差 小信号模型 有功功率振荡 虚拟惯量 |
| DOI：10.19783/j.cnki.pspc.231365 |
| 分类号: |
| 基金项目:国家自然科学基金项目资助(U2004166)；河南省科技攻关计划项目资助(212102210021，232102241026) |
|
| Control strategy for a PV energy storage VSG based on active power differentialcompensation and virtual inertia adaptive strategy |
|
GUO Leilei1, JIA Kaiyang1, ZHU Hong2, SUN Jian2, JIN Nan1, LI Yanyan1, XU Haizhen3
|
|
1. College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China;
2. China Energy Engineering Group Anhui Electric Power Design Institute Co., Ltd., Hefei 230601, China;
3. Hefei University, Hefei 230601, China
|
| Abstract: |
| There is a problem in that it is difficult to balance the steady-state deviation of grid-connected active power with the dynamic oscillation of the system in a traditional PV storage virtual synchronous generator (VSG). Thus a PV storage VSG control strategy based on active power differential compensation (APDC) and virtual inertia adaptive strategy is proposed. First, a closed-loop small signal model of a PV energy storage VSG based on the APDC algorithm is established, and the suppression effect of the algorithm on transient oscillation and steady-state deviation of active power is determined by analyzing a pole map and Bode diagram, and the tuning method of correlation coefficient is given. Then, to improve the frequency response performance and avoid the increase of active power overshoot, an improved virtual inertia adaptive strategy based on the APDC algorithm is designed, and the range of its parameters is given. Finally, experimental results show that the proposed strategy can eliminate the dynamic oscillation and steady-state deviation of the VSG grid-connected active power, with smaller frequency deviation and change rate. |
| Key words: PV energy storage VSG steady-state deviation small signal model active power oscillation virtual inertia |
