河南理工大学学报（自然科学版）2024，Vol.43Issue(1)：124-131,8.DOI:10.16186/j.cnki.1673-9787.2022010046
多机系统PSVR与PSS的参数协调
Coordination of PSVR and PSS parameters in multi-machine system
摘要
Abstract
Objective To improve the power angle and voltage oscillation characteristics of the multi-machine power system as a whole,Methods the power system voltage regulator(PSVR)was introduced into the multi-machine power system with PSS,the interaction between voltage oscillation modes and power angle os-cillation modes was considered,and PSVR parameters were set reasonably.In this paper,the initial values of PSS and PSVR parameters were set by phase-frequency characteristic analysis and root locus method re-spectively.Then,gain coefficients and time constants of the controllers were used as control variables,stabil-ity indices of power angle oscillation modes and voltage oscillation modes as optimization objective,and the permitted range of controller parameters as the constraint condition,the joint optimization model of PSS and PSVR parameters were established.Finally,the optimization model was solved by the nonlinear programming method.Results Through the analysis of practical examples,through coordinated optimization of PSS and PSVR parameters,the power angle oscillation modes and voltage oscillation modes of the system improved,and the damping ratio of both reached the expected level.In the 8-machine system,the damping ratio of the minimum damping power angle mode increased from 0.0841 to 0.1029,and the damping ratio of the mini-mum damping voltage mode increased from 0.0475 to 0.0911.In the practical system,the minimum damping mode of power angle and voltage oscillation modes could also reach the threshold value after optimizing.Conclusion Introducing PSVR into the multi-machine system with PSS,the joint optimization model of PSS and PSVR parameters proposed in this paper could improve the power angle and voltage oscillation charac-teristics of the system as a whole.关键词
电力系统稳定器/电力系统电压调节器/小干扰稳定性/参数优化Key words
power system stabilizer/power system voltage regulator/small signal stability/parameter optimization分类
信息技术与安全科学引用本文复制引用
于佳彤,王克文,刘文君,陈梦茹,陈剑,蒋松芳..多机系统PSVR与PSS的参数协调[J].河南理工大学学报（自然科学版）,2024,43(1):124-131,8.基金项目
国家自然科学基金资助项目(52007171) （52007171）
