考虑逆变型分布式电源时滞的孤岛微网小信号稳定分析

ZHOU Niancheng

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考虑逆变型分布式电源时滞的孤岛微网小信号稳定分析

更新时间：2025-08-13

- 考虑逆变型分布式电源时滞的孤岛微网小信号稳定分析
- Automation of Electric Power Systems Vol. 41, Issue 12, Pages: 20-25(2017)
- 作者机构：
  
  输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市,400044
- 作者简介：
- 基金信息：
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  CLC：
- Published：2017
- 稿件说明：
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ZHOU Niancheng. [J]. Automation of electric power systems, 2017, 41(12): 20-25.
DOI：

ZHOU Niancheng. [J]. Automation of electric power systems, 2017, 41(12): 20-25. DOI：

摘要

孤岛微网电源容量小且网架结构薄弱易于发生稳定性问题。文中针对基于下垂控制含逆变型分布式电源(IIDG)的孤岛微网系统

通过参数灵敏度和参与因子分析对IIDG小信号模型进行化简;结合柴油机经典同步发电机模型并考虑IIDG执行机构时滞特性

构建了孤岛微网小信号模型;采用特征根分析法对考虑IIDG侧时滞后的孤岛微网在IIDG机组出力、下垂系数及时滞时间常数变化下的小信号稳定性进行分析。其结果可用于指导孤岛微网IIDG机组投运组合和顺序的策略

采用时域仿真验证了研究结果的有效性。

Abstract

An islanded microgrid is apt to have stability problems because of its low power capacity and weak network configuration. This paper mainly focuses on the droop control microgrid system consisting of an inverter interfaced distributed generator(IIDG). Using the participation factor and sensitivity analysis

simplified small signal models of the IIDG are derived. By referring to the diesel engine equivalent model

the small signal model of microgrid is created. Then by adopting the eigenvalue analysis to analyse the time-delay effect of IIDG

the small signal stability of microgrid during the variation of IIDG's power output

the droop coefficient and the time constant are studied. The results can be used to guide the IIDG operation strategy of different combinations and orders in the microgrid

and time-domain simulation is used to prove the validity of the results. This work is supported by National Natural Science Foundation of China(No. 51577018).

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