HYBRID HVDC TRANSMISSION SCHEME OF PURE RENEWABLE ENERGY BASE

Liu Wentao; Zhang Zheren; Xu Zheng

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

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (12) : 533-543. DOI: 10.19912/j.0254-0096.tynxb.2022-1323

HYBRID HVDC TRANSMISSION SCHEME OF PURE RENEWABLE ENERGY BASE

Liu Wentao, Zhang Zheren, Xu Zheng

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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.

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HVDC power transmission / electrical power system / renewable energy resource / line commutated converter / modular multilevel converter / fault ride-through strategy

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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

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