光伏直流微网协调直流电压控制策略的研究
摘要：直流微电网是新能源发电接入常规公用电网的一种有效方式,并以其显著的优势成为微电网技术研究的一个新方向。本文以光伏发电系统、储能系统、交直流负荷组成的直流微电网为研究对象,在分析该直流微电网运行状态的基础上,提出了直流电压协调控制策略。该控制策略根据直流电压的变化量以及蓄电池的荷电状态SOC(State of Charge)自动协调各换流器的工作状态,从而实现了在各种运行工况下直流微电网内的有功功率平衡,达到了维持直流母线电压稳定的目的。最后,在Matlab/Simulink仿真环境下进行了仿真实验,结果验证了该控制策略的有效性。
Abstract:DC microgrid is an effective way for new energy power generation to access to the utility power grid, and it is becoming a new research direction of microgrid technology due to its obvious advantages. Taking a DC microgrid which consists of PV systems, energy storage system and AC/DC loads as an example, a coordinated DC voltage control strategy is proposed based on the analysis of different operation states of the DC microgrid. According to the DC voltage variation and the state of charge (SOC) of battery, coordinating control of converters is achieved automatically, then the active power of DC microgrid can be balanced to maintain the voltage stability of DC bus. In the end, simulations are carried out in Matlab/Simulink simulation environment, and the validity of the control strategy is verified by the results.
标题：光伏直流微网协调直流电压控制策略的研究
英文标题：Research on Coordinated DC Voltage Control Strategy of DC Microgrid Based on Photovoltaic Generation
作者：朱晓荣, 张慧慧,
关键词：直流微电网, 光伏发电, 协调控制, 电压控制,
发表日期：2014-10-09
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