Abstract:

Hydrogen energy, characterized by its clean nature and high energy density, is a key technical pathway for the large-scale integration of renewable energy and clean energy utilization.To address the economic challenges of photovoltaic(PV)-coupled electrolytic hydrogen production systems, a coordinated operational strategy for optimal power allocation based on varying electricity prices is proposed.Mathematical models for the PV system and the alkaline electrolyzer are developed, and the nonlinear dynamic relationship between the electrolyzer's hydrogen production rate and its power consumption is analyzed.On this basis, with the objective of maximizing total system revenue, the proposed strategy utilizes electricity price differences to dynamically allocate energy between grid sales and electrolytic hydrogen production.The results show that the strategy effectively optimizes power allocation according to electricity prices and PV power output, thereby achieving revenue maximization in different time periods.This work provides technical support for the economic operation of PV-coupled hydrogen production systems.

Key words: photovoltaics, hydrogen production, power supply for hydrogen production, revenue optimization