面向能源互联网的多端口DC/DC能源路由器控制策略研究

doi:10.11959/j.issn.2096-3750.2020.00197

物联网学报 ›› 2020, Vol. 4 ›› Issue (4): 32-42.doi: 10.11959/j.issn.2096-3750.2020.00197

面向能源互联网的多端口DC/DC能源路由器控制策略研究

马文忠¹,李冠成¹,张奎同²,杨淑娟³,魏孟迪¹,唐毓振¹,宋玉成⁴,董磊¹()

¹ 中国石油大学（华东）新能源学院，山东青岛 266580
² 兖矿集团有限公司，山东邹城 273500
³ 山东交通职业学院，山东潍坊 261100
⁴ 中国石油大学（华东）理学院，山东青岛 266580

修回日期:2020-09-24 出版日期:2020-12-30 发布日期:2020-12-14
作者简介:马文忠（1968- ），男，山东东营人，中国石油大学（华东）教授，主要研究方向为能源互联网与智能电网技术等|李冠成（1995- ），男，山东淄博人，中国石油大学（华东）新能源学院硕士生，主要研究方向为多端口DC/DC能源路由器、直流自耦变压器等|张奎同（1983- ），男，山东济宁人，兖矿集团有限公司新能源事业部高级工程师，主要研究方向为煤化工技术|杨淑娟（1987- ），女，山东济宁人，山东交通职业学院副教授，主要研究方向为电力电子技术、船舶电气等|魏孟迪（2000- ），男，山东滨州人，中国石油大学（华东）新能源学院本科生，主要研究方向为电力系统自动化、电力电子技术|唐毓振（1999- ），男，山东烟台人，中国石油大学（华东）新能源学院本科生，主要研究方向为电力系统自动化、电力电子技术|宋玉成（2001- ），男，山东德州人，中国石油大学（华东）理学院本科生，主要研究方向为电力系统自动化、电力电子技术|董磊（1978- ），男，山东东营人，中国石油大学（华东）新能源学院讲师，主要研究方向为能源互联网与智能电网技术等
基金资助:
山东省自然科学基金资助项目(ZR2018MEE040);山东省自然科学基金资助项目(ZR2019MEE094)

Research on the control strategy of multi-port DC/DC energy router for the energy Internet

Wenzhong MA¹,Guancheng LI¹,Kuitong ZHANG²,Shujuan YANG³,Mengdi WEI¹,Yuzhen TANG¹,Yucheng SONG⁴,Lei DONG¹()

¹ College of New Energy,China University of Petroleum,Qingdao 266580,China
² Yankuang Group Co.,Ltd.,Zoucheng 273500,China
³ Shandong Transport Vocational College,Weifang 261100,China
⁴ College of Science,China University of Petroleum,Qingdao 266580,China

Revised:2020-09-24 Online:2020-12-30 Published:2020-12-14
Supported by:
The Natural Science Foundation of Shandong Province(ZR2018MEE040);The Natural Science Foundation of Shandong Province(ZR2019MEE094)

摘要/Abstract

摘要：

分析了目前多端口直流（DC,direct current）转DC（DC/DC）能源路由器的特点和缺陷，优化设计了一种面向能源互联网的多端口DC/DC能源路由器。通过对不同工况下运行电压的需求分析，对多端口DC/DC能源路由器进行了子模块全桥比例设计，在此基础上提出了一种实现无闭锁穿越直流故障的交直流（AC/DC,alternating current/DC）解耦的控制策略。该多端口DC/DC能源路由器用于实现多个电压等级不同的直流电网的相互连接，既保留了传统直流自耦变压器技术低成本、低损耗的优势，又有效改善了其无法应对直流故障的缺点。最后，在MATLAB/Simulink环境进行了仿真测试，验证了该技术正常运行时的稳定性、抑制直流故障的可行性和控制策略的有效性。

关键词: 能源互联网, 能源路由器, 直流自耦变压器, 直流故障

Abstract:

The characteristics and shortcomings of the current multi-port direct current (DC) to DC (DC/DC) energy router were analyzed.A multi-port DC/DC energy router for the energy Internet was optimized and designed.Through the analysis of the operating voltage requirements under different working conditions,the full-bridge proportional design of the sub-module was proposed.On this basis,an alternating current (AC) to DC (AC/DC) decoupling control strategy to realize riding through the DC fault without de-blocking any devices was proposed.The multi-port DC/DC energy router was used to realize the interconnection of multiple DC power grids with different voltage levels.It not only retained the advantages of low cost and low loss of the traditional DC autotransformer,but also effectively improved the shortcomings that the DC autotransformer cannot ride through the DC fault.Finally,the simulation test was carried out in the MATLAB/Simulink environment to verify the stability of the technology in the normal operation,the feasibility of suppressing the DC fault and the effectiveness of the control strategy.

Key words: energy Internet, energy router, DC autotransformer, DC fault

中图分类号:

TM402

马文忠,李冠成,张奎同,杨淑娟,魏孟迪,唐毓振,宋玉成,董磊. 面向能源互联网的多端口DC/DC能源路由器控制策略研究[J]. 物联网学报, 2020, 4(4): 32-42.

Wenzhong MA,Guancheng LI,Kuitong ZHANG,Shujuan YANG,Mengdi WEI,Yuzhen TANG,Yucheng SONG,Lei DONG. Research on the control strategy of multi-port DC/DC energy router for the energy Internet[J]. Chinese Journal on Internet of Things, 2020, 4(4): 32-42.

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换流器	正常运行	E₁侧双极性短路	E₂侧双极性短路	E₃侧双极性短路	运行电压需求
MMC1	(E₃-E₂)/2	(E₃-E₂)/2	E₃/2	-E₂/2	-E₂/2,E₃/2]
MMC2	(E₂-E₁)/2	E₂/2	-E₁/2	(E₂-E₁)/2	-E₁/2,E₂/2]
MMC3	E₁	0	E₁	E₁	0,E₁]
MMC4	(E₂-E₁)/2	E₂/2	-E₁/2	(E₂-E₁)/2	-E₁/2,E₂/2]
MMC5	(E₃-E₂)/2	(E₃-E₂)/2	E₃/2	-E₂/2	-E₂/2,E₃/2]

系统参数	MMC1和MMC5	MMC2和MMC4	MMC3
MMC额定直流电压/kV	8（所连接的直流电网的额定电压E₁为80 kV）	7（所连接的直流电网的额定电压E₂为64 kV）	50（所连接的直流电网的额定电压E₃为50 kV）
MMC额定有功功率/MW	15	6.562 5	34.375
每桥臂子模块数目	4 FBSMs+2 HBSMs	4 FBSMs+2 HBSMs	6 FBSMs+2 HBSMs
额定子模块电容电压/kV	2	1.75	6.25
子模块电容值/μF	1 000	1 000	450
桥臂电抗器值/H	0.048 8	0.048 8	0.09

面向能源互联网的多端口DC/DC能源路由器控制策略研究

Research on the control strategy of multi-port DC/DC energy router for the energy Internet

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