摘要
虚拟同步机(VSM)技术通过模拟传统同步机转子惯性和系统阻尼,对电网提供惯性支撑。然而,阻尼与惯性的引入使得变换器的动态响应速度变慢,当变换器对输出功率进行主动调节时,无法快速、平稳地到达给定值。针对这一问题,提出一种惯性与阻尼自适应调节的负荷侧VSM优化控制策略。该控制策略通过在功率调节不同阶段,自主调节VSM的惯性J和阻尼D,实现对输出功率的优化控制。为了验证该控制策略的有效性,建立了VSM的MATLAB/Simulink模型,对其进行了仿真实验。仿真结果表明,与传统控制方法相比,基于该控制策略的同步机有功功率调节速度更快,调节过程中的波动和超调更小,具备更好的动态调节性能。
Virtual synchronous machine(VSM) technology provides inertia support for power grid by simulating rotor inertia and system damping of drive synchronous machine. However, the dynamic response speed of converter is reduced by damping and inertia. It cannot reach the given value quickly and smoothly when the converter needs to regulate the output power. In order to solve this problem, an optimal control strategy of load side VSM with adaptive adjust of inertia and damping is proposed in this paper. At different stages of power regulation, the inertia J and damping D of VSM will be regulated autonomously to realize the optimal control of output power. In order to verify the effectiveness of the control strategy, the MATLAB/Simulink model of VSM is established, and the simulation experiment is carried out. Compared with the traditional control method, the active power regulation speed of the synchronous machine is faster, the fluctuation and overshoot in the regulation process are smaller and the dynamic regulation performance is better.
作者
龚仁喜
顾佳宇
Gong Renxi;Gu Jiayu(School of Electrical Engineering,Guangxi University,Nanning 530004,China)
出处
《电测与仪表》
北大核心
2023年第3期130-135,共6页
Electrical Measurement & Instrumentation
基金
国家自然科学基金资助项目(61561007)
广西自然科学基金资助项目(2017GXNSFAA198168)。
关键词
负荷虚拟同步机
转动惯量
阻尼系数
自适应控制
动态性能
load virtual synchronous machine
rotational inertia
damping coefficient
adaptive control
dynamic performance
