基于节点模式势能的复合机组-整流器电力系统功率振荡特性分析
Analysis of Power Oscillation Characteristics of Composite Unit and Rectifier Power System Based on Nodal Mode Potential Energy
马佳航 1孙麓 1张智翔 1韩子杨1
作者信息
- 1. 东北电力大学,吉林 吉林 132012
- 折叠
摘要
针对新能源占比逐渐提高,新型电力系统引发的小干扰稳定性问题日益复杂,因此研究含有新能源和传统能源机组的复合机组-变流器场景的小干扰稳定性问题尤为重要.以含光伏和高压直流输电的复合机组-变流器电力系统为研究对象,提出了一种利用节点模式势能法对复合机组-变流器电力系统功率振荡特性分析的方法,推导出小干扰下光伏和高压直流输电并网节点模式势能表达式,分析总结了复合机组-变流器电力系统功率振荡特性.最后,经电力系统分析软件仿真分析和低频振荡评价指标计算对比,验证了此方法的可行性.
Abstract
With the gradual increase of the proportion of new energy sources,the small disturbance stability problem caused by new power systems is becoming more and more complex.It is particularly important to study the small disturbance stability problem of the composite unit-converter scenario containing new energy and traditional energy units.In this paper,the composite unit converter power system including photovoltaic and high voltage direct current(HVDC)is studied.In this paper,a nodal mode potential energy method is proposed to analyze the power oscillation characteristics of the combined unit converter power system,and the expression of the nodal mode potential energy of the photovoltaic and HVDC grid-connected power transmission under small interference is derived.The power oscillation characteristics of the compound unit-rectifier power system are analyzed and summarized.Finally,the feasibility of this method is verified by simulation analysis and low frequency oscillation evaluation index calculation.
关键词
小干扰稳定/光伏/复合机组-整流器电力系统/节点模式势能Key words
small signal stability/photovoltaic/compound unit-rectifier power system/node mode potential energy引用本文复制引用
基金项目
吉林省教育厅科学研究项目(JJKH20210092KJ)
出版年
2024
NETL
NSTL
维普
万方数据