虚拟同步机技术在电站式储能变流器中应用

Application of Virtual Synchronous Machine Technology in Power Station Energy Storage

随着新能源发电技术的发展和微电网并网要求的提高,具有同步机功能的并网变流器成为一种发展趋势,但其存在单机调节能力有限的缺点。具备虚拟同步机特性的大容量集中式储能系统,不但满足电站功率削峰添谷的储能要求,也具备调频调压的能力。本文针对大容量集中式储能系统控制算法、虚拟同步机关键技术、样机研制进行了研究,并通过仿真和样机试验验证了所研究的系统控制策略。

With the development of new energy power generation technology and the requirement of micro-grid connection, the grid-connected converter with synchronous machine function has become a development trend, but it has the shortcomings of limited capacity. With the characteristics of virtual synchronous machine large-capacity centralized energy storage system, not only to meet the power plant power cut peak plus storage requirements, but also have the ability to FM regulator. In this paper, the control technology of large capacity centralized energy storage system, the key technology of virtual synchronous machine and the development of prototype are studied, and the control strategy of the system is verifed by simulation and prototype test.