刘爱国,毛佳奇,陈彦桥,赵璐璐,刘静佳,希望·阿布都瓦依提

• 1:国能宁东新能源有限公司
• 2:国家能源集团新能源技术研究院有限公司
• 3:新疆大学电气工程学院

摘要(Abstract)：

随着电力系统电力电子化程度加深，具有电压源特性的构网型变流器将成为未来电力系统的常规装备之一。为了准确高效地分析含构网型装备的电力系统控制运行与安全稳定特性，需对具有强非线性特性的构网型变流器进行降阶。传统的基于电流环、电压环简化的降阶方法构建的简化模型由于忽略了内环控制与线路耦合阻抗对装备同步稳定性的潜在影响，在部分场景下难以保证稳定性分析的准确性。基于此，在现有降阶方法的基础上，充分考虑内环控制的小信号特性与线路耦合阻抗的影响，提出了一系列改进的简化模型，并就各简化模型对频域、特征值、时域分析的适应性进行了分析。分析得出在各类场景下没有能始终保持高精度的简化模型，需要根据场景更换模型简化方法，并根据分析结果总结了变流器简化模型选择与控制参数整定的相关依据。

关键词(KeyWords)： 构网型;变流器控制;模型降维;小信号稳定性

Abstract:

Keywords:

基金项目(Foundation): 国家能源集团科技项目(GJNY-23-119);; 国家重点研发计划项目(2021YFB150700)~~

作者(Author): 刘爱国,毛佳奇,陈彦桥,赵璐璐,刘静佳,希望·阿布都瓦依提

DOI: 10.19666/j.rlfd.202404096

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