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1.浙江大学电气工程学院,浙江省杭州市 310027
2.中国电建集团华东勘测设计研究院有限公司,浙江省杭州市 310014
张哲任(1988—),男,通信作者,博士,副研究员,主要研究方向:直流输电与柔性交流输电、新能源并网。E-mail:3071001296zhang@zju.edu.cn
唐英杰(1996—),男,博士研究生,主要研究方向:直流输电、电磁暂态仿真与新能源并网。E-mail:11810049@zju.edu.cn
傅春翔(1987—),男,硕士,高级工程师,主要研究方向:海上风电场柔性直流输电技术。E-mail:fu_cx@ecidi.com
收稿日期:2021-04-19,
修回日期:2021-08-26,
网络出版日期:2021-09-22,
纸质出版日期:2021-11-10
移动端阅览
张哲任,唐英杰,傅春翔.面向海上平台轻型化的跟网型中频远海风电场直流送出方案[J].电力系统自动化,2021,45(21):139-148.
ZHANG Zheren,TANG Yingjie,FU Chunxiang.HVDC Transmission Scheme of Grid-following Medium-frequency Distant Offshore Wind Farm for Offshore Platform Miniaturization[J].Automation of Electric Power Systems,2021,45(21):139-148.
张哲任,唐英杰,傅春翔.面向海上平台轻型化的跟网型中频远海风电场直流送出方案[J].电力系统自动化,2021,45(21):139-148. DOI: 10.7500/AEPS20210419001.
ZHANG Zheren,TANG Yingjie,FU Chunxiang.HVDC Transmission Scheme of Grid-following Medium-frequency Distant Offshore Wind Farm for Offshore Platform Miniaturization[J].Automation of Electric Power Systems,2021,45(21):139-148. DOI: 10.7500/AEPS20210419001.
海上风电具有广阔的发展前景,而可靠、高效的大规模远海风电并网系统是开发海上风电的关键技术。针对远海风电直流送出系统的海上平台轻型化问题,提出一种跟网型中频远海风电场直流送出方案。该方案采用跟网型风电机组,直流系统的整流侧和逆变侧都采用模块化多电平换流器(MMC)。首先,从拓扑结构和控制系统2个方面对该跟网型中频方案进行了描述;接着,就海上风电场交流系统运行频率对风电场及其直流送出系统的影响进行了分析,包括对变压器、交流电缆和MMC等的影响。基于±320 kV/1 000 MW海上风电直流送出系统,分析了100 Hz跟网型中频方案的技术经济性,包括关键电气设备的主回路参数、海上交流电缆造价、海上平台造价、风机造价、交流电缆损耗和整流站阀损耗、交流电缆输电能力。最后,在PSCAD/EMTDC中搭建了跟网型中频方案的电磁暂态仿真模型,验证了该方案的有效性。
Offshore wind power has promising development potential
and reliable and efficient large-scale distant offshore wind power grid integration system is the key technology to develop the offshore wind power. Aiming at the miniaturization problem of offshore platform for distant offshore wind power HVDC transmission system
an HVDC transmission scheme for the grid-following medium-frequency distant offshore wind farm is proposed. This scheme utilizes the grid-following wind turbines
where the modular multilevel converters (MMCs) are installed on both the rectifier side and the inverter side of HVDC system. Firstly
the grid-following medium-frequency scheme is described from two aspects of topology and control system. Then
the influence of the offshore AC system operation frequency on the offshore wind farm and its HVDC transmission system is analyzed
including influence on the transformer
the AC cable and the MMC. Based on a ±320 kV/1 000 MW offshore wind power HVDC transmission system
the technical and economic efficiency of the proposed 100 Hz grid-following medium-frequency scheme is analyzed
including the main circuit parameters of key electrical equipment
the cost of AC cable
the cost of offshore platform
the cost of wind turbines
the AC cable loss and rectifier station valve loss
and the transmission capability of AC cables. Finally
an electromagnetic transient simulation model of the grid-following medium-frequency scheme is built in PSCAD/EMTDC to verify the effectiveness of the scheme.
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