虚拟同步机储能配置约束原则的研究摘要为了应对越来越严峻的环境和能源问题，近些年来学者们在分布式发电领域取得了快速发展和突破。但分布式电源不仅具有固有的间歇性缺点，而且还无法为电力系统提供充足的惯量和阻尼用来维持系统的频率稳定性。为了消除分布式发电的因为惯性不足给电力系统带来的不良影响，使用虚拟同步机的方法被一些学者所提出，发电机所具有的惯性特征能够利用向变流器直流侧的储能电池进行充电和放电来效仿，这样可以使虚拟同步机在一些频段内具有与同步发电机相似的特征。虚拟同步机通常装备一定容量的储能电池，这是其用来维持自身惯性特征所不可缺少的结构单元，但是在实际中，储能电池的容量经常受限于环境和投资等因素。本篇论文主要针对虚拟同步机构建出相匹配的小信号模型，并由此获得计算储能物理约束的基本方法。此外笔者还成功推出有功以及频率彼此间的传递函数，绘制出相应的对数频率特性曲线图和极点轨迹图，用以分析惯性参数与储能物理约束的关系，同时还分析在物理约束的制约下，虚拟同步机惯性参数取值的依据。为了研究物理约束下的运行边界，本文分析了不同无功参考值时物理约束的变化情况。关键词：虚拟同步机；分布式发电；储能；物理约束；运行边界 Research on the Constraint Principle of Energy Storage Configuration of Virtual Synchronous MachineAbstractIn order to cope with increasingly serious environmental and energy problems, scholars have made rapid development and breakthroughs in distributed power generation in recent years. However, distributed power supplies not only have inherent intermittent shortcomings, but also do not provide sufficient inertia and damping for the power system. In conventional power systems, steam turbines and generators provide inertia and damping. In order to solve the problem of low inertia and under-damping of distributed generation, the method of using virtual synchronous machine has been proposed by some scholars. The inertia and damping characteristics of traditional generators can be charged by the energy storage system on the DC side of the inverter. T...
