适用于纯新能源基地送出的混合型直流输电方案

刘文韬; 张哲任; 徐政

doi:10.19912/j.0254-0096.tynxb.2022-1323

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太阳能学报 ›› 2023, Vol. 44 ›› Issue (12) : 533-543. DOI: 10.19912/j.0254-0096.tynxb.2022-1323

适用于纯新能源基地送出的混合型直流输电方案

刘文韬, 张哲任, 徐政

作者信息 +

HYBRID HVDC TRANSMISSION SCHEME OF PURE RENEWABLE ENERGY BASE

Liu Wentao, Zhang Zheren, Xu Zheng

Author information +

文章历史 +

摘要

为实现光伏、风电等新能源远距离输送,提出一种适用于大规模新能源远距离外送的混合型直流输电系统。首先,介绍混合型直流输电系统的拓扑结构和数学模型,整流站采用半桥子模块型模块化多电平换流器（MMC）与电网换相换流器（LCC）串联,逆变站采用混合型MMC,该系统能为新能源基地提供电压支撑并且实现直流故障的自清除;然后,提出系统的稳态控制方式与交直流故障下的控制策略;最后,在PSCAD/EMTDC中对送端功率波动、送端交流故障、受端交流故障、直流线路故障等4个典型场景进行仿真分析,验证了控制策略的有效性。

Abstract

In order to realize the long-distance transmission of sustainable energy sources such as photovoltaic and wind power, a hybrid HVDC transmission scheme for large-scale renewable energy sources long-distance transmission is proposed. Firstly, the topology structure and mathematical model of the hybrid HVDC transmission system are introduced. The rectifier station adopts half-bridge modular multilevel converters and line commutated converter in series, and the inverter station adopts hybrid modular multilevel converters, which is capable of providing voltage support for the renewable energy bases and realize self-clearance of DC faults. Then the steady-state control method of the system and the control strategy under AC and DC faults are further proposed. Finally, based on PSCAD/EMTDC, an electromagnetic transient simulation model is built. The effectiveness of the control strategy is verified by four typical scenarios, which include power fluctuation at the sending-end, AC fault at the sending-end, AC fault at the receiving end, and DC line fault.

导出引用

刘文韬, 张哲任, 徐政. 适用于纯新能源基地送出的混合型直流输电方案[J]. 太阳能学报. 2023, 44(12): 533-543 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1323

Liu Wentao, Zhang Zheren, Xu Zheng. HYBRID HVDC TRANSMISSION SCHEME OF PURE RENEWABLE ENERGY BASE[J]. Acta Energiae Solaris Sinica. 2023, 44(12): 533-543 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1323

中图分类号： TM722

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