构网型储能黑启动系统自激振荡机理分析  

Analysis of Self-Excited Oscillations Mechanism in Grid-Forming Energy Storage Black Start System

作　　者：孙广宇 韩子娇 孙俊杰 谢冰 SUN Guangyu;HAN Zijiao;SUN Junjie;XIE Bing(Electric Power Research Institute of State Grid Liaoning Electric Power Co.,Ltd.,Shenyang,Liaoning 110006,China;State Grid Liaoning Electric Power Co.,Ltd.,Shenyang,Liaoning 110006,China)

机构地区：[1]国网辽宁省电力有限公司电力科学研究院,辽宁沈阳110006 [2]国网辽宁省电力有限公司,辽宁沈阳110006

出　　处：《东北电力技术》2025年第3期1-8,12,共9页Northeast Electric Power Technology

摘　　要：针对构网型储能黑启动过程中发现的由变压器投切引发的自激振荡现象,揭示其产生机理,并给出可行的振荡抑制策略。首先,建立典型构网型储能黑启动系统的等值模型,在线性化分析方法无法揭示该自激振荡产生机理的前提下,引入描述函数法解析了这类自激振荡产生的机理。其次,分析了该系统各参数对振荡特性的影响,并提出该自激振荡现象的抑制策略。最后,实时仿真及实际试验结果验证了该分析的准确性,为构网型储能黑启动试验的顺利完成提供了理论及仿真依据。For the self-excited oscillation phenomenon caused by transformer switching and found in the black start process of grid-forming energy storage,it reveals its generation mechanism and provides a feasible oscillation suppression strategy.Firstly,it establishes an equivalent model of a typical grid-forming energy storage black start system.Under the premise that the linearization analysis method cannot reveal the generation mechanism of this self-excited oscillation,the describing function method is introduced to analyze the generation mechanism of this kind of self-excited oscillation.Secondly,it analyzes the effects of the system parameters on the oscillation characteristics,and proposes a suppression strategy for this self-excited oscillation phenomenon.Finally,the real-time simulation and actual test results verify the accuracy of this analysis,providing theoretical and simulation basis for the successful completion of the grid-forming energy storage black start test.

关 键 词：构网型储能 黑启动 自激振荡 小信号分析 描述函数法 

分 类 号：TM91[电气工程—电力电子与电力传动]