配电网中分布式发电系统的复合并网控制方法  

A New Composite Grid-Connected Method of Distributed Generation System in Power Distribution Network

作　　者：夏向阳[1] 徐刚[1] 程莎莎[1] 张琦[1] 

机构地区：[1]长沙理工大学电气与信息工程学院,长沙湖南410114

出　　处：《电力科学与工程》2013年第8期1-5,共5页Electric Power Science and Engineering

基　　金：湖南省自然科学基金资助项目(2011JJ5027)

摘　　要：分析了光伏并网发电装置的工作原理和电路拓扑结构,从光伏并网发电的控制策略出发,针对带本地负载的光伏并网发电系统产生的谐波、无功消耗等问题,提出一种基于比例谐振(PR)控制的分布式发电并网控制方法,该控制方法把比例谐振控制(PR)和比例积分控制(PI)相结合,利用PR控制可以通过对参考信号的无差跟踪实现零稳态误差的特点,可以补偿新能源并网发电时本地非线性负载消耗的无功和产生的谐波;利用PI控制简单实用、鲁棒性强的特点,可以使并网逆变器稳定的向电网输送电能。最后,利用Matlab/Simulink仿真验证了本控制方法的可行性和合理性。This paper analyzes the working principle of photovohaic （pv） grid power generation device and the circuit topology, starting from the control strategy of photovoltaic （pv） grid power generation, photovohaic （pv） grid power generation system for with local load to produce the problem such as harmonic, reactive power consumption, based on a proportional resonant （PR） control method of new type of distributed generation （dg） in power control, the control method to control the proportional resonant （PR） and proportional integral （P I） control combined together. Use PR control can through to the reference signal has no difference for zero steady-state error tracking characteristic, the new energy can compensate when hooked up to the local consumption of reactive power and harmonics generated in the nonlinear load; Using PI control is simple and practical, robust characteristics, can make the grid inverter sending electricity to power grid stability. Finally, using Matlab/Simulink simulation verify the feasibility and rationality of this control method.

关 键 词：新能源并网发电 逆变器 比例谐振控制 PI控制 复合控制 

分 类 号：TM464[电气工程—电器]