针对分布式电源的种类,对分布式发电系统中重合闸技术进行了分析.采用分布式电源额定容量、次暂态电抗等实际参数,从分布式电源的安装位置、大小等方面,考虑了自同期合闸的应用可行性,并对分布式电源逆变并网装置及控制方案进行了详细介绍.在MATLAB中,进行了系统建模和计算.结果表明,在分布式发电条件下,自同期合闸具有一定的可行性;对于逆变并网的分布式电源,电流瞬时值反馈可以实现合闸并网条件.

According to the type of the DG,the working situations of the reclosing are studied.The actual parameters of DG's rated capacity and transient reactance are adopted.According to the location and capacity of the DG, the possibility of auto-reclosing is analyzed,and the parallel feed inverter used in this system and its control method is presented.The system model and calculation results are given in MATLAB.It shows that the auto-reclosing technique is feasible in the distributed generation system and for some DGs connected to the net by inverters,the current instantaneous feedback control can realize the switching condition.

TM762.2

重庆市自然科学基金