配电网分布式逆变电源并网系统的暂态量计算方法  

Transient Calculation Method for Distribution Network Systems with Distributed Grid-connected Inverter Power Sources

作　　者：叶远波 戴长春 汪伟 马红月 付新宇 YE Yuanbo;DAI Changchun;WANG Wei;MA Hongyue;FU Xinyu(State Grid Anhui Electric Power Co.,Ltd.,Hefei 230022,China;School of Electrical Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]国网安徽省电力有限公司,合肥230022 [2]西安交通大学电气工程学院,西安710049

出　　处：《电力系统及其自动化学报》2025年第3期37-46,共10页Proceedings of the CSU-EPSA

基　　金：国家电网公司科技项目(521200223001N)。

摘　　要：为精确描述故障过程中逆变电源并网系统暂态量的变化过程,提出适用于逆变电源并网系统故障计算的离散分段求解法。首先,通过建立逆变电源控制系统与滤波电路的耦合模型,表征控制过程的非线性特性和状态量间的耦合特性;然后,构建逆变电源并网系统的离散函数模型,通过离散分段求解得到故障过程中的系统暂态量;最后,运用所提方法对典型配电网系统进行故障计算,并通过仿真对比验证了该方法的可行性和有效性。To accurately describe the changing process of transient variables in a grid-connected inverter power source system under fault,a discrete segmented solution method suitable for the fault calculation of the grid-connected inverter power source system is proposed.Through the establishment of a coupling model between the inverter power source control system and the filtering circuit,the nonlinear characteristics during the control process and the coupling characteristics between state variables are characterized.Then,a discrete function model of the grid-connected inverter power source system is formed.By solving the discrete segment of state variables,the transient variables of the system under fault are calculated.The proposed method is applied to the fault calculation of typical distribution network systems,and its feasibility and effectiveness are verified through simulation comparison.

关 键 词：逆变电源 故障计算 低电压穿越 离散分段求解 暂态量 

分 类 号：TM464[电气工程—电器]