Work

An Evaluation Method of the Equivalent Inertia of High-Penetration-Rate Distributed Photovoltaic Power Generation Connected to the Grid

Year: 2025

Type: article

Abstract: The large-scale integration of distributed photovoltaic power generation leads to increasingly scarce inertia carriers in new power systems. To prevent the frequency of the low-inertia system from dropping too quickly during faults, more extensive inertia response resources need to be urgently explored. Considering that photovoltaic arrays do not have mechanical rotors, it is necessary to configure energy storage with VSM control for photovoltaic power generation units to give them the ability to actively support frequency. Thus, from the perspective of inertia carriers, the contribution of each power generation unit to the stability of the system frequency is quantified, and an equivalent inertia assessment method is proposed for high-penetration distributed photovoltaic power generation connected to the grid considering virtual inertia transformation. Finally, simulation verification is carried out based on the DIgSILENT/Power Factory platform. This research shows that the equivalent inertia assessment method proposed in this paper can effectively reflect the overall inertia level and inertia distribution trend of the system.

Source: Processes

DOI: 10.3390/pr13061871

Authors: Hongchun Yao, Shan Gao, Jianyu Lu

Institutions: China Electric Power Research Institute, Southeast University, State Grid Corporation of China (China)

Language: English

Topic: Microgrid Control and Optimization

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $2,896