摘要
本文针对交直流混合微网提出了一种控制直流母线电压和交流系统电压和频率稳定的协调控制策略。直流部分光伏系统和风力系统采用MPPT控制,蓄电池和超级电容混合控制承担余下的功率实现对直流母线的控制,交流部分对原有的下垂控制进行了改进,柴油同步发电机的控制单元通过加入下垂控制对原有的调速系统和励磁系统进行改进和对DC/AC逆变器进行下垂控制共同参与系统的频率和电压调节。通过PSCAD仿真平台,验证了本文控制算法的有效性。
As for the AC-DC hybrid micro-grid in this paper,a kind of coordination control strategy for con-trolling DC bus voltage and AC system voltage as well as frequency stability is proposed.The photovoltaic system and the wind power system of DC part are controlled by MPPT.The hybrid control of the battery and super capacitor takes over the remaining power to control the DC bus.The AC part has improved the origi-nal sag control.The control unit of the diesel synchronous generator improves the speed regulating system and exciting system with addition of sag control and performs sag control for the DC/AC inverter so to partic-ipate jointly frequency and voltage regulation of the system.The effectiveness of the control algorithm in this paper is verified by the PSCAD simulation platform.
作者
苗健
吴文谊
赵倩宇
MIAO Jian;WU Wenyi;ZHAO Qianyu(National Defense Academy of PLA Academy of Military Sciences,Beijing 100850,China;Tianjin University,Key Laboratory of Art Grid of Ministry of Education,Tianjin 300072,China)
出处
《电力电容器与无功补偿》
北大核心
2018年第6期168-172,178,共6页
Power Capacitor & Reactive Power Compensation
