覆盖多层级全场景的构网型储能电站并网测试方法研究

Grid connection testing methods for grid-forming energy storage power stations covering multiple levels and all scenarios

随着新能源占比在电网系统中不断增加,国内调峰、调频与调压能力日益增大,电网灵活性受到较大影响。对此,重点围绕构网型储能相关领域进行分析研究。首先,对构网型与跟网型控制的技术特点进行对比分析,总结了新疆地区构网型储能的发展现状;同时,选取新疆某构网型储能电站示范工程对低电压穿越、惯量响应与阻尼特性方面进行相关性能测试,并提出了一种覆盖多层级全场景的构网型储能电站并网测试方法,测试结果可为构网型储能并网性能评估提供借鉴参考;最后,针对新疆地区构网型储能发展进行预测分析,总结了构网型储能在新能源富足地区的发展优势。

With the increasing proportion of new energy in power grid system,the domestic capacity of peak regulation,frequency regulation and voltage regulation is increasing,which greatly affects the flexibility of the power grid.In this regard,the focus is on analyzing and researching the related fields of grid-forming energy storage.Firstly,the technical characteristics of grid-following and grid-forming control are compared and analyzed,and the development status of grid-forming energy storage in Xinjiang is summarized.At the same time,a demonstration project of a grid-forming energy storage power station in Xinjiang is selected to test the low voltage ride-through,inertia response and damping characteristics,and a grid-connected test method for grid-forming energy storage power stations covering multi-level and full-scale scenarios is proposed.The test results can provide reference for grid-connected performance evaluation of grid-forming energy storage.Finally,the development of grid-forming energy storage in Xinjiang is predicted and analyzed,and the development advantages of grid-forming energy storage in new energy-rich areas are summarized.