CAJ | 학술논문

指出微电网采用下垂控制可以减小对通信系统的依赖，提高微电网的可靠性，易于实现分布式电源和负荷的即插即用。基于逆变器采用下垂控制方式的基本原理，讨论了逆变器的端电压、相角与其输出的有功功率、无功功率的相关性；理论研究了逆变器采用下垂控制的频率调节作用和下垂控制微电网的频率调节特性；最后在Matlab/Simulink仿真平台搭建一微电网的仿真模型，分析了负荷并网和分布式电源并网时微电网的动态特性，以及下垂控制逆变器的频率调节作用。研究表明，下垂控制的微电网能够自动调节系统的电压和频率，动态调节逆变器的空载运行参数可以实现微电网频率的无差调节。
지출미전망채용하수공제가이감소대통신계통적의뢰，제고미전망적가고성，역우실현분포식전원화부하적즉삽즉용。기우역변기채용하수공제방식적기본원리，토론료역변기적단전압、상각여기수출적유공공솔、무공공솔적상관성；이론연구료역변기채용하수공제적빈솔조절작용화하수공제미전망적빈솔조절특성；최후재Matlab/Simulink방진평태탑건일미전망적방진모형，분석료부하병망화분포식전원병망시미전망적동태특성，이급하수공제역변기적빈솔조절작용。연구표명，하수공제적미전망능구자동조절계통적전압화빈솔，동태조절역변기적공재운행삼수가이실현미전망빈솔적무차조절。
The microgrid based on droop controlled inverters can reduce the dependency on communication system and increase its reliability. It is easy to implement plug-and-play for Distributed Generators(DG) and loads. The original theory of droop controlled inverter is researched in the paper,and correlations between voltage,phase angle,and the active power and reactive power and analyzed. The frequency adjustment effect of droop controlled inverter,and frequency regulation characteristics of droop controlled microgrid are studied theoretically. Finally,a microgrid is modeled on Matlab/Simulink. The dynamic performance of microgrid aroused by disturbance such as load or DG connected to the grid is studied,and the frequency adjustment function of droop controlled inverter is analyzed. The results show that the microgrid can regulate voltage and frequency automatically,and the errorless regulation can be realized by regulating the no-load operation parameters of the inverters.