关键词: 光伏制氢, 光-氢协调, 最大功率点, 整流器控制, 最大量绿氢, 增发功率曲线

Abstract: Green hydrogen utilization is an effective way of carbon neutralization, and large-scale green electricity hydrogen production is one of the main ways of hydrogen energy production. The output characteristics of new energy are volatile, which will reduce the stability of green hydrogen production. The photovoltaic and hydrogen production systems have the potential to regulate, and can provide regulation resources for the system under the premise of safe operation. In order to meet the requirements of multiple control modes of new energy power generation and green hydrogen production in petrochemical enterprises, this paper explores the combined regulation method of photovoltaic and hydrogen production to meet the requirements of source-grid-load collaborative control. In this paper, the photovoltaic maximum power point tracking method is improved, the photovoltaic non-maximum power point operation method is proposed to increase the photovoltaic regulation capacity, and the pressure and power switching control method of hydrogen production system is proposed to improve the response speed of hydrogen production power supply. This paper simulates and calculates the output regulation of the photovoltaic and hydrogen production system under the conditions of maximum green hydrogen production, increase of power generation capacity, reduction of power generation, light and other changes, which verifies the feasibility of the control mode and improves the system regulation capacity.

Key words: photovoltaic hydrogen production, photo-hydrogen coordination, maximum power point, rectifier control, maximum amount of green hydrogen, additional power curve