摘要
介绍了分布式电源并网后对配电网产生的影响,以及简化的含分布式电源的配电网模型。针对分布式发电的并网接口技术,引入滑模变结构控制系统以减轻分布式电源对配网产生的影响,并设置一定宽度的滞环带宽来消除滑模变结构控制中由于切换频率过高而带来的抖振问题。仿真结果表明该方法在一定程度上提高了分布式电源电压突变后恢复稳定状态的速度和效果,保证了电网的供电质量和安全可靠性。
The impact of distributed generation （DG） which connected to the distribution network is introduced in this paper. A simplified model of distribution network with DG is established. Sliding mode variable structure controller is introduced to reduce the impact of the distributed network by the interface of DG. The controller sets an annual in order to eliminate the chattering problems because of the high frequency of the process of sliding control. The simulation and experimental test results show that the proposed sliding mode variable structure controller improves the speed and effect when the voltage of DG come back from chop to stable state, which ensures the supply quality and safety and reliability of the network.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2009年第15期75-78,82,共5页
Power System Protection and Control
基金
三峡大学研究生科研创新基金项目(200922)
关键词
分布式电源
配电网
并网接口
滑模变结构控制
滞环带宽
供电质量
DG
distribution network
gird-connected interface： sliding mode variable structure control
hysteresis bandwidth
supply quality
