电力系统及其自动化学报2025，Vol.37Issue(7)：91-101,11.DOI:10.19635/j.cnki.csu-epsa.001570
多馈入直流下考虑暂态电压稳定的新一代大容量调相机最优配置
Optimal Configuration for New Large-capacity Synchronous Condenser Considering Transient Voltage Stability Under Multi-Feed DC Environment
摘要
Abstract
The high AC-DC coupling strength of a receiving-end grid under a multi-feed DC environment faces severe challenges of DC phase change failure and voltage instability.Therefore,it is valuable to study how to optimally config-ure a new large-capacity synchronous condenser at the key nodes of the receiving-end grid.First,a reactive power out-put characteristic model of the synchronous condenser during sub-transient and transient processes is established to clar-ify the coupling relationship between the reactive power output of the large-capacity synchronous condenser and DC re-active power demand on different time scales.Then,a critical stable voltage index for dynamic load is set up,and the mechanism of effect of transient DC reactive power variation on the transient voltage stability of a multi-feed DC area with dynamic load access is revealed.Finally,an optimal configuration model of large-capacity synchronous condenser under the multi-feed DC environment is proposed,with a goal of achieving the maximum reactive power support capaci-ty at the least economic cost.The proposed model is verified by an example of one multi-feed DC area,and results show that a scientific and reasonable configuration of the large-capacity synchronous condenser can effectively solve the prob-lems of DC phase change failure and voltage instability caused by the AC bus voltage drop during sub-transient and tran-sient processes.关键词
交直流混联电网/多馈入直流/暂态电压稳定/调相机/最优配置/动态负荷Key words
AC-DC hybrid grid/multi-feed DC/transient voltage stability/synchronous condenser/optimal configura-tion/dynamic load分类
信息技术与安全科学引用本文复制引用
李清,陈培渊,徐智华,盛浩..多馈入直流下考虑暂态电压稳定的新一代大容量调相机最优配置[J].电力系统及其自动化学报,2025,37(7):91-101,11.基金项目
中国南方电网有限责任公司科技项目(CGYKJXM20220207). （CGYKJXM20220207）
