并网下虚拟同步发电机并联频率无差协调控制

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中图分类号：TM314 文献标志码：A 文章编号：1671-5276（2025）05-0252-05

Abstract：Acollaborative optimal design shemeof paralelfrequencyof virtual synchronous generator（VSG）is proposed to further improve the stabilityof power equipment operating in isolated island.The secondary adjustment and vibration reductionaresetin VSG'sactive regulation looprealizing VSG'sparalel frequency conversionand errorlesscooperative control.Acording to the analysis on VSG's frequency一free control mechanism，VSG's transient damping performance and active power overshoot suppresion ability are improved by compensating VSG's active control loop. Simulation results show thatthe proposed schemecan restore the network frequency tothe given voltage level，and theratio of active power output of three VSG is 1：2：3 ，achieving accurate active power distribution effect and improving the output dynamic performance of each VSG when the load jumps.Experimental verification shows that the three VSG output curents decrease under sudden loading，and can smoothly transition to steady state，and the outputcurrent ratio remains atabout 1：2：3 . The proposed control method is also suitable for the case of sudden change of active load.

Keywords：virtual synchronous generator；frequency shift；non-diference regulation；accurate distribution of active power;active power overshoot

0 引言

学行为，赋予新能源逆变电源惯量、阻尼等优异性能，对增强新能源消纳能力、提高海岛电网稳定运行具有重要意义[7-8]。（剩余4658字）