Damping Characteristic Analysis of Wind-thermal-bundled Systems  

作　　者：Shiying Ma Liwen Zheng 

机构地区：[1]the Power System Department,China Electric Power Research Institute,Beijing 100192,China

出　　处：《Journal of Modern Power Systems and Clean Energy》2024年第5期1383-1395,共13页现代电力系统与清洁能源学报（英文）

基　　金：supported in part by National Key R&D Program of China(No.2022YFB2403100)。

摘　　要：Wind-thermal-bundled system has emerged as the predominant type of power system,incorporating a significant proportion of renewable energy.The dynamic interaction mechanism of the system is complex,and the issue of oscillation stability is significant.In this paper,the damping characteristics of the direct current(DC)capacitance oscillation mode are analyzed using the path analysis method(PAM).This method combines the transfer-function block diagram with the damping torque analysis(DTA).Firstly,the linear models of the permanent magnet synchronous generator(PMSG),the synchronous generator(SG),and the alternating current(AC)grid are established based on the transfer functions.The closed-loop transferfunction block diagram of the wind-thermal-bundled systems is derived.Secondly,the block diagram reveals the damping path and the dynamic interaction mechanism of the system.According to the superposition principle,the transfer-function block diagram is reconstructed to achieve the damping separation.The damping coefficient of the DTA is used to quantify the effect of the interaction between the subsystems on the damping characteristics of the oscillation mode.Then,the eigenvalue analysis is used to analyze the system stability.Finally,the damping characteristic analysis is validated by time-domain simulations.

关 键 词：Wind-thermal-bundled system path analysis method(PAM) transfer-function block diagram damping 

分 类 号：TM61[电气工程—电力系统及自动化] TM73