摘要
针对本地不对称的三相负荷所引起的公共连接点(PCC)三相电压不对称,提出了基于分布式发电的不对称电压调节器的设计,将三相不对称电压的调节统一于分布式发电系统中,在并网的情况下实现了负荷不对称时PCC点电压的调节。采用的是功率电流双环控制策略的逆变控制系统,通过合理的选取功率控制环,电流控制环,PI控制器参数,可以使得分布式发电逆变装置在两种情况下具有良好的电压调节稳态及动态性能。利用Matlab/Simulink对系统进行仿真,验证了所提系统结构及控制策略设计的可行性。
In view of the three-phase local asymmetry caused by load of public access point （PCC） three-phase voltage asymmetry, this paper proposes distributed power generation-based asymmetric voltage regulator design. Three-phase voltage regulator is integrated in distributed power systems to realize unsymmetrical load voltage regulation at PCC in parallel network. This paper is based on current dual-loop control power inverter control strategy control system, and reasonably selects power control ring, the current control loops, and PI controller parameters, by which distributed power generation network devices inverter voltage regulator has good stability state and dynamic performance. And using Matlab / Simulink simulation of the system, it verifies the feasibility of the system structure and control strategy design.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2009年第17期35-39,共5页
Power System Protection and Control
关键词
分布式发电
电压不对称
电压调节
逆变控制
distributed power grid
voltage asymmetry
voltage regulator
inverter control
