基于V^2控制方法双Boost-Buck单一逆变器的风光储分布并网/孤岛离网控制模式  

The Control Mode of Distribution Grid/Off-Grid of Wind-Solar-Storage with Double Boost-Buck Converter Single Inverter Based on V^2 Control Method

作　　者：希望.阿不都瓦依提 晁勤[1] 王筱[2] Xiwang·Abuduwayiti Chao Qin Wang Xiao(School of Electrical Engineering Xinjiang University Urumqi 830047 China State Grid Xinjiang Electric Power Company Urumqi 830063 China)

机构地区：[1]新疆大学电气工程学院,乌鲁木齐830047 [2]国网新疆电力公司,乌鲁木齐830063

出　　处：《电工技术学报》2016年第22期194-204,共11页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51367016);国家国际科技合作专项(172013DFG61520)资助项目

摘　　要：目前边缘农牧区采用风光互补发电,由于通过各自逆变器运行,存在成本高、能耗高等问题。提出采用双Boost-Buck单一逆变器结构实现风光储联合发电共用直流母线方案,达到降低投资成本和运行能耗的效果。首先设计了基于V2控制双Boost-Buck变换器风光储联合发电的拓扑结构和电路,实现了输入电压在较宽范围内波动时输出电压仍然能够恒值控制的目标,同时采用电压斜坡补偿方法抑制了Boost-Buck电路自激振荡问题。接着基于蓄电池,制定了储能平抑风光波动、九宫分区跟随负荷、模糊充放电等控制策略,达到了风光储发电与逆变器无缝对接。其次基于风光储联合发电系统,进行了减小弃风光电量效益评估。最后基于风光储分布并网和孤岛离网控制模式,研发了软硬件装置,进行了仿真验证和试验测试。结果表明:逆变器输出电流具有良好的静、动态性能,同时实现了较好的经济性、有效性、稳定性和可靠性。Wind and solar hybrid power generation is widely used in agricultural and pastoralareas. In current applications, each system uses independent inverters, which requires higher cost andenergy consumption. In this paper, a common DC bus scheme with dual Boost-Buck based singleinverter structure was proposed, to realize wind and solar hybrid power generation. The proposedscheme can reduce cost and energy consumption. Firstly, topological structure and circuit ofwind-solar-storage cogeneration system were designed based on V2 controlled double Boost-Buckconverter. Hence the constant voltage value control can be achieved when the input voltage varies in awide range. At the same time, voltage slope compensation method was used to suppress the self-excitedoscillation of Boost-Buck circuit. Secondly, a series of control strategies were designed to improvestorage stability, including stabilizing fluctuation of wind-solar, nine zoning following load, fuzzycharging and discharging. The seamless abutment between wind-solar-storage power and inverter wasachieved. Thirdly, the benefit evaluation on the power consumption reduction of abandoned wind-solar was carried out. Finally, the software and hardware device were developed, according to the controlmodes of distribution grid and isolated island off-grid. The test and simulation were carried out. Theoutput current of inverter shows good static and dynamic performance, stability and reliability, as wellas better cost economy.

关 键 词：风光储联合发电 V2控制双Boost-Buck变换器 电压斜坡补偿方法 分布式并网 抑制波动控制 孤岛式离网跟随负荷控制 

分 类 号：TP273.1[自动化与计算机技术—检测技术与自动化装置]