大型光伏直流发电控制保护技术及仿真试验研究

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Abstract Traditional photovoltaic AC power generation systems face a series of significant challenges, such as power angle stability and wide-frequency oscillation. Medium-voltage DC power generation technology has gradually become another alternative technical solution. This article conducts research based on the Huadian Xinjiang ±50 kV/200 MW medium-voltage DC demonstration project. Firstly, it introduces the system topology and operation mode based on high-magnification modular commutated converter (MCC) valves, and designs a hierarchical coordinated control system architecture and collaborative control protection strategy. Then, a full-chain hardware-in-the-loop simulation test platform for the DC control and protection system is established, and a simulation test verification scheme for control and protection strategies is designed. Finally, hard-ware-in-the-loop simulation tests are conducted for the transient and steady-state conditions of the me-dium-voltage DC power generation system. The test waveforms confirm the reliability and accuracy of the proposed control and protection system architecture, control and protection strategies, and the built simulation test platform, providing technical support for the in-plant joint debugging tests and on-site commissioning of the demonstration project.

Key words： photovoltaic voltage source converter based high voltage direct current (VSC-HVDC) transmission DC control and protection DC fault ride-through hardware-in-the-loop simulation

Received: 23 December 2025

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	Articles by authors
	YANG Weitao
	LIU Ying
	ZHANG Yao
	GUO Xiao

Cite this article:

YANG Weitao,LIU Ying,ZHANG Yao等. Research on control and protection technology and simulation testing for large-scale photovoltaic DC power generation[J]. Electrical Engineering, 2026, 27(7): 54-61.

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https://dqjs.cesmedia.cn/EN/Y2026/V27/I7/54

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