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

摘要： 绿氢利用是碳中和的有效途径，大规模绿电制氢是氢能生产的主要方式之一。新能源出力具有波动性，会降低绿氢制备稳定性。光伏、制氢系统具有调节潜力，可以在安全运行前提下，为系统提供调节资源。为满足石化企业新能源发电-绿氢制备多种控制方式要求，探索光伏、制氢联合调节方法，实现源-网-荷协同控制。通过改进光伏最大功率点跟踪方法，提出光伏非最大功率点运行方法，增加光伏调节能力；提出制氢系统压力/功率切换控制方法，提高制氢电源响应速度。对光伏-制氢系统最大量绿氢制备、增加发电能力、减少发电量、光照等条件变化情况下出力调节进行模拟计算，验证了控制方式的可行性，提高了系统调节能力。

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