电力系统自动化2024，Vol.48Issue(16)：59-67,9.DOI:10.7500/AEPS20230815004
交-直-交异步系统准同步控制下直流动态功频响应特性分析
Analysis on Characteristics of DC Dynamical Power and Frequency Response for AC-DC-AC Asynchronous-interconnection System Under Quasi-synchronous Control
摘要
Abstract
The asynchronous system interconnected by DC transmission can realize quasi-synchronous operation of the asynchronous system and achieve the goal of real-time sharing of frequency regulation resources by implementing additional control on the DC transmission.However,in the engineering practice of quasi-synchronous control,unreasonable control structure or parameter configuration can lead to unexpected power fluctuations in the system.First,a dynamical power and frequency response analysis model of the quasi-synchronous system is constructed based on the additional quasi-synchronous DC control.Then,the influence of DC control parameters on power oscillations is analyzed based on this model.Furthermore,the similarities and differences between power fluctuations caused by quasi-synchronous control and traditional angle oscillations are analyzed.Finally,the analysis and verification are conducted by using the power fluctuations that occurred during the quasi-synchronous experiment process,and recommendations for suppressing DC power fluctuations are proposed,along with a discussion on quasi-synchronous control.关键词
异步互联系统/准同步运行/动态功频响应/直流联络线/频率控制/功率振荡Key words
asynchronous-interconnection system/quasi-synchronous operation/dynamical power and frequency response/DC tie-line/frequency control/power oscillation引用本文复制引用
李崇涛,陈亦平,杨若朴,杨荣照,黄济宇,肖逸..交-直-交异步系统准同步控制下直流动态功频响应特性分析[J].电力系统自动化,2024,48(16):59-67,9.基金项目
国家重点研发计划资助项目(2022YFB2403500) （2022YFB2403500）
中国南方电网有限责任公司科技项目(ZDKJXM20210034). This work is supported by National Key R&D Program of China(No.2022YFB2403500)and China Southern Power Grid Company Limited(No.ZDKJXM20210034). （ZDKJXM20210034）
