基于频率前馈补偿的储能VSG并网有功响应优化策略
OPTIMIZATION STRATEGY OF GRID-CONNECTED ACTIVE POWER RESPONSE OF GRID-CONNECTED ACTIVE OF ENERGY STORAGE VSG BASED ON FREQUENCY FEEDFORWARD COMPENSATION
兰才华 1石荣亮 1王国斌 1周其锋 1刘维莎1
作者信息
- 1. 桂林理工大学机械与控制工程学院,桂林 541006
- 折叠
摘要
分析现有基于电磁功率前馈补偿的暂态阻尼方案,该方案可有效抑制储能虚拟同步机(VSG)并网有功的动态振荡,但会因降低其惯量支撑能力而存在频率过冲风险.为此,提出一种基于频率前馈补偿的暂态阻尼优化策略.该策略在不影响储能VSG惯量响应性能的前提下,可有效抑制其并网有功的动态振荡,既能大大减小有功超调,又不会引起频率过冲.最后,建立储能VSG并网系统的Matlab仿真模型与实验平台,仿真与实验测试对比结果验证了所提策略的有效性与优越性.
Abstract
The existing transient damping control scheme based on electromagnetic power feedforward compensation is analyzed,which can effectively suppress the dynamic oscillation of grid-connected active power for energy storage virtual synchronous generator(VSG),but reduces its inertia support capacity and has the risk of frequency overshoot.In view of this,a transient damping optimization strategy based on frequency feedforward compensation(FFC)is proposed.On the premise of not affecting the inertia response performance of energy storage VSG,the improved transient damping optimization strategy based on FFC can effectively suppress the dynamic oscillation of its grid-tied active power,which can greatly reduce the active power overshoot without increasing the frequency overshoot.Finally,both the Matlab simulation model and the experimental platform of energy storage VSG grid-connected system are established,and the effectiveness and superiority of the proposed transient damping optimization strategy based on FFC are verified by simulation and experimental test results.
关键词
虚拟同步机/虚拟惯量/储能/下垂特性/暂态阻尼/动态振荡Key words
virtual synchronous generator/virtual inertia/energy storage/droop characteristics/transient damping/dynamic oscillation引用本文复制引用
基金项目
广西自然科学基金(2020GXNSFBA297124)
广西自然科学基金(2021GXNSFAA220038)
出版年
2024
NETL
NSTL
维普
万方数据