基于V<sup>2</sup>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

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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。

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	阿不都瓦依提
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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

Abstract：Wind and solar hybrid power generation is widely used in agricultural and pastoral areas. In current applications, each system uses independent inverters, which requires higher cost and energy consumption. In this paper, a common DC bus scheme with dual Boost-Buck based single inverter structure was proposed, to realize wind and solar hybrid power generation. The proposed scheme can reduce cost and energy consumption. Firstly, topological structure and circuit of wind-solar-storage cogeneration system were designed based on V² controlled double Boost-Buck converter. Hence the constant voltage value control can be achieved when the input voltage varies in a wide range. At the same time, voltage slope compensation method was used to suppress the self-excited oscillation of Boost-Buck circuit. Secondly, a series of control strategies were designed to improve storage stability, including stabilizing fluctuation of wind-solar, nine zoning following load, fuzzy charging and discharging. The seamless abutment between wind-solar-storage power and inverter was achieved. 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 control modes of distribution grid and isolated island off-grid. The test and simulation were carried out. The output current of inverter shows good static and dynamic performance, stability and reliability, as well as better cost economy.

Key words： Wind and PV energy complemental generation V2 control dual Boost-Buck converter voltage slope compensation method distributed grid connected suppression control following load control with isolated island

收稿日期: 2016-01-30 出版日期: 2016-12-02

PACS:

TP273.1

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

作者简介: 希望·阿不都瓦依提男,1967年生,副教授,博士研究生,研究方向为多种可再生能源互补发电。E-mail:xiwang_x@126.com（通信作者）;晁勤女,1959年生,教授,博士生导师,研究方向为洁净能源并网发电技术,电力系统继电保护。E-mail:cqtdx@163.com

引用本文:

希望·阿不都瓦依提, 晁勤, 王筱. 基于V²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[J]. 电工技术学报, 2016, 31(22): 194-204. Xiwang·Abuduwayiti, Chao Qin, Wang Xiao. The Control Mode of Distribution Grid/Off-Grid of Wind-Solar-Storage with Double Boost-Buck Converter Single Inverter Based on V² Control Method. Transactions of China Electrotechnical Society, 2016, 31(22): 194-204.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I22/194

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