Optimal Configuration and Operation of Grid-Forming Electro-Hydrogen Energy Storage in New Power System Considering Power and Energy Balance

Abstract

Aiming to address the problem of power and energy imbalance caused by a high proportion of new energy grid connections, the influence of fluctuation characteristics of both sides of the load on power and energy balance of new power systems is analyzed, and an evaluation system including core indicators such as power balance margin, peak regulation demand index and source–load power matching degree is proposed. Then, by analyzing the influence of the operation of electrolytic cell, hydrogen fuel cell and Grid-Forming energy storage equipment on the inertia level of a system, the inertia response control strategy of Grid-Forming electro-hydrogen energy storage (GFM-EHS) is proposed. Finally, considering frequency security constraints of the power system, virtual inertia and frequency support of the hydrogen energy system, an optimal configuration and scheduling method of new power system Grid-Forming hydrogen energy storage, considering that inertia support is proposed, which can provide a certain basis for improving new energy consumption capacity, ensuring the safe and stable operation of the new power grid and promoting green and low-carbon transformation of the energy structure.