含有储能单元的微电网运行控制技术

Operation and control techniques of Micro-Grids with energy storage

含有储能单元的微电网运行控制技术为可再生能源发电的规模化利用提供高效的组织形式和管理手段.搭建包括光伏、风电、储能单元的典型微电网控制系统;光伏、风机采用最大功率跟综控制,以保证风能和光能的最大利用率;给出含有储能单元的微电网组网方案和运行控制方式,分析储能在微电网并网运行、孤岛运行、孤岛下负荷变化及无缝切换等过程中的能量控制作用;基于LCL滤波器的储能电压源型功率变换器,提出包含逆变器侧电感电流环、滤波电容电压环和电网侧电感电流环的三环控制策略.最后,仿真验证了该储能逆变器控制策略和方法合理有效.

Operation and control techniques of Micro-Grids （MG） with energy storage support the high efficient application organization and management tools for the large scale of renewable ener- gy sources. A typical MG control system （including photovoltaic （PV）, wind generation, energy storage） is built in this paper. To ensure the maximum utilization of wind energy and solar ener- gy, the Maximum Power Point Tracking （MPPT） method is used to control wind power and photovoltaic （PV） power generation. The networking scheme and operation ~ control methods of Micro-Grids （MG） with energy storage are given. The energy control function is analyzed in grid-connected operation model, isolated island operation model, cutting or increasing load mod el, and the seamless handoff model. Based the voltage source converter （VSC） with LCL type fil- ter, three-loop control method （concluding converter side inductance current loop, filter capacitor voltage loop and gird side inductance current loop） is proposed. Simulation results show that the proposed energy storage control strategies have high effectivity.