电网技术Issue(9)：2404-2409,6.DOI:10.13335/j.1000-3673.pst.2014.09.014
基于模糊理论的并网型含光伏微电网功率控制
Fuzzy Theory Based Grid-Connected Power Control of Microgrid Containing Photovoltaic System
摘要
Abstract
Randomness and fluctuation of renewable energy resources such as wind farm and photovoltaic (PV) generation included in grid-connected microgrid bring negative influence to power grid. For this reason, a fuzzy theory based control method, in which the output of distributed generation systems is used to smooth the power in tie line connecting microgrid with power grid, is proposed. Taking a system composed of PV generation and diesel generator as example, a theoretical control model is established, in which the intensity of illumination and the power difference of the tie line are regarded as input variables of fuzzy operation and through the fuzzy modeling a PWM control waveform is output, which controls the active power of PV inverter. Thus the output of PV system transmitted to load is controlled. Simulation results show that the exchanged power in the tie line can be effectively suppressed, and it means that the employment of energy storage devices is somewhat decreased, so the utilization of renewable energy sources can be ensured. Therefore, when the microgrid is connected to power grid the power impact from microgrid to power grid can be controlled within a lighter extent.关键词
微电网/光伏-柴油机系统/联络线功率控制/模糊逻辑控制Key words
microgrid/photovoltaic-diesel hybrid power system/tie-line power flow control/fuzzy control分类
信息技术与安全科学引用本文复制引用
吕天光,艾芊,韩学山,赵媛媛..基于模糊理论的并网型含光伏微电网功率控制[J].电网技术,2014,(9):2404-2409,6.基金项目
国家科技支撑计划项目(2013BAA01B04)；国网公司2012年科技项目(SA0300274)。Project Supported by National Science and Technology Support Plan(2013BAA01B04) （2013BAA01B04）
