基于电力电子变压器的交直流混合可再生能源关键技术
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摘要
分布式可再生能源大规模接入电网,对系统的灵活接入和运行控制管理提出了新的挑战和更高的要求;利用多端口电力电子变压器构建交直流混合系统,在多个交直流电压等级集成分布式可再生能源,可以实现灵活接入与组网;同时,减少变换环节,提高能源利用效率,增强系统控制能力,在更大范围实现可再生能源互联互补。构建了基于电力电子变压器的交直流混合可再生能源关键技术研究框架,并对其中涉及的关键技术进行了详细阐述。
Large-scale distributed renewable energy access to the power grid presents new challenges and higher requirements for flexible access and operational control management of the power system. Using multi-port PET to build AC-DC hybrid systems and integrate distributed renewable energy at multiple AC and DC voltage levels enables flexible access and networking. At the same time, the transformation of links will be reduced, energy utilization efficiency will be improved, system control capabilities will be enhanced, and interconnection of renewable energy sources will be realized in a wider range. Relying on the national key R&D plans, a research framework for key technologies of AC/DC hybrid renewable energy based on PET is constructed, and the key technologies involved are elaborated.
Large-scale distributed renewable energy access to the power grid presents new challenges and higher requirements for flexible access and operational control management of the power system. Using multi-port PET to build AC-DC hybrid systems and integrate distributed renewable energy at multiple AC and DC voltage levels enables flexible access and networking. At the same time, the transformation of links will be reduced, energy utilization efficiency will be improved, system control capabilities will be enhanced, and interconnection of renewable energy sources will be realized in a wider range. Relying on the national key R&D plans, a research framework for key technologies of AC/DC hybrid renewable energy based on PET is constructed, and the key technologies involved are elaborated.
引文
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[14] 王成山, 李微, 王议锋,等(Wang Chengshan, Li Wei, Wang Yifeng, et al.). 直流微电网母线电压波动分类及抑制方法综述(DC bus voltage fluctuation classification and restraint methods review for DC microgrid)[J]. 中国电机工程学报(Proceedings of the CSEE), 2017, 37(1):84-97.
[15] Shi Jianjiang, Gou Wei, Yuan Hao, et al. Research on voltage and power balance control for cascaded modular solid-state transformer[J]. IEEE Transactions on Power Electronics, 2011, 26(4):1154-1166.
[16] Keshavarzi D, Ghanbari T, Farjah E. A Z-source based bidirectional DC circuit breaker with fault current limitation and interruption capabilities[J]. IEEE Transactions on Power Electronics, 2017,32(9): 6813-6822.
[17] Ahmed H M A, Eltantawy A B, Salama M M A. A Planning approach for the network configuration of AC-DC hybrid distribution systems[J]. IEEE Transactions on Smart Grid, 2018, 9(3): 2203-2213.
[18] Ghadiri A, Haghifam M R, Larimi S M M. Comprehensive approach for hybrid AC/DC distribution network planning using genetic algorithm[J]. IET Generation Transmission & Distribution, 2017, 11(16):3892-3902.
[19] Yang Yongchun, Wang Xiaodan, Luo Jingjing, et al. Multi-objective coordinated planning of distributed generation and AC/DC hybrid distribution networks based on a multi-scenario technique considering timing characteristics[J]. Energies, 2017, 10(12):2137.
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[21] 孙国萌,韩蓓,李国杰(Sun Guomeng, Han Bei, Li Guojie).基于概率方法的全寿命周期交直流混合配电网经济性评估(Economic evaluation of AC/DC hybrid distribution network based on probabilistic life cycle cost)[J].电力建设(Electric Power Construction),2016,37(5):21-27.
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