Frequency-support Control for Grid-connected DC-coupled Hydrogen Production System

LI Limin; LI Shuona; FENG Qifan; XIA Yanghong; WEI Wei

doi:10.13334/j.0258-8013.pcsee.250991

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Frequency-support Control for Grid-connected DC-coupled Hydrogen Production System

更新时间：2026-09-20

- Frequency-support Control for Grid-connected DC-coupled Hydrogen Production System
- Vol. 45, Issue 16, Pages: 6163-6175(2025)
- 作者机构：
  
  浙江大学电气工程学院,浙江省,杭州市,310027
- 作者简介：
- 基金信息：
- DOI：10.13334/j.0258-8013.pcsee.250991
  CLC：
- Published：2025
- 稿件说明：
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LI Limin, LI Shuona, FENG Qifan, et al. Frequency-support Control for Grid-connected DC-coupled Hydrogen Production System[J]. 2025, 45(16): 6163-6175.
DOI：

LI Limin, LI Shuona, FENG Qifan, et al. Frequency-support Control for Grid-connected DC-coupled Hydrogen Production System[J]. 2025, 45(16): 6163-6175. DOI： 10.13334/j.0258-8013.pcsee.250991.

摘要

并网型直流耦合制氢系统(grid-connected DC-coupled hydrogen production system，GDHPS)参与电网调节是能源转型战略下的热门趋势，其需在尽可能为电网提供频率支撑的同时确保电解槽间合理功率分配，而现有文献对该问题研究较少。为此，该文针对碱液电解槽(alkaline water electrolyzer，AWE)，提出一种新型的GDHPS参与频率支撑的控制策略，该策略包含3点改进：一是提出自适应虚拟热敏电阻控制策略，通过控制系统定期更新AWE模型并结合其温度实时计算下垂系数；二是设计频率响应机制以快速响应电网频率变化；三是引入虚拟惯性响应机制提升系统动态性能。所提策略可在宽温度范围内实现AWE间完全分散控制与合理功率共享，同时为电网提供频率支撑，并通过Matlab/Simulink仿真平台及电解制氢实验平台验证有效性。

Abstract

It is a current trend that the grid-connected DC-coupled hydrogen production system (GDHPS) participates in grid regulation within the framework of the energy transition strategy. On one hand

it should provide frequency support to the grid to the greatest extent possible. On the other hand

it needs to ensure a reasonable power distribution among electrolyzers. In the existing literature

this issue has been scarcely considered. To fill this gap

this paper focuses on alkaline water electrolyzers (AWEs) and proposes a novel frequency support control strategy for the GDHPS. Specifically

there are three improvements in this control strategy. First

An adaptive virtual thermal resistor control strategy is proposed. The control system updates AWE model periodically

and calculates the real-time droop coefficient in combination with the AWE's temperature. Second

a frequency response mechanism is proposed. Third

the virtual inertial response mechanism is introduced to improve the dynamic performance. The proposed control strategy realizes completely decentralized control and reasonable power sharing among AWEs within wide temperature range

and also provides frequency support for the grid. The proposed control strategy is verified in the Matlab/Simulink platform and an electrolysis hydrogen experimental platform.

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