基于虚拟惯量控制的新型电力系统功率差前馈振荡抑制方法
Power Difference Feed-forward Oscillation Suppression Method for New Power System Based on Virtual Inertial Control
王雪 1刘林 1卓庆东 2张海鹏 2杨苓 2许方园 2曹雨晨1
作者信息
- 1. 国网能源研究院有限公司,北京 102209
- 2. 广东工业大学自动化学院,广东广州 510006
- 折叠
摘要
为了解决新型电力系统的低惯量、弱阻尼问题,虚拟同步发电机技术备受关注.但虚拟同步发电机在为系统提供惯量和阻尼的同时,也使得系统在受扰动影响时产生有功振荡问题,并且容易产生稳态误差.为此,提出基于虚拟惯量控制的新型电力系统功率差额前馈振荡抑制方法,优化虚拟同步发电机控制,有效地减小了系统在扰动下产生的有功功率和频率冲击,改善了系统的动态稳定性.同时,分别建立常规控制、普通微分前馈控制和功率差前馈控制等控制策略的有功闭环小信号模型,并给出相关参数设计方法.仿真验证表明,所提策略对解决动态振荡、稳态误差问题的有效性与优越性.
Abstract
To solve the problem of low inertia and weak damping in the new power system,virtual synchronous generator technology has attracted much attention.However,while the virtual synchronous generator provides inertia and damping for the system,it also causes the system to generate active oscillation when affected by disturbance,and it is easy to produce steady-state errors.Therefore,this paper proposes a power difference feedforward oscillation suppression method for a new power system based on virtual inertial control to optimize the control of a virtual synchronous generator.This effectively reduces the influence of active power and frequency generated under disturbance and improves the dynamic stability of the system.Meanwhile,the active closed-loop small-signal models of conventional control,differential feedforward control,and power difference feedforward control are built respectively,and the relevant parameter design methods are given.The effectiveness and superiority of the proposed strategy in solving dynamic oscillation and steady-state error problems are verified through simulation.
关键词
新型电力系统/有功振荡/频率超调/根轨迹分析/参数整定Key words
new power system/active oscillation/frequency overshoot/root locus analysis/parameter tuning引用本文复制引用
基金项目
国家电网科技项目(1400-202357351A-1-1-ZN)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据