AUTHOR=Qiu Shi , Zhang Kun , Chen Zhuo , Zhang Youming , Chen Zhe , Cheng Songqing 

TITLE=Identification model for weak areas of transient energy balance in EESs based on dynamic grid partitioning

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 11 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2023.1204960

DOI=10.3389/fenrg.2023.1204960

ISSN=2296-598X

ABSTRACT=In response to the high uncertainty of large-scale new energy output in EES and the weak controllability of energy output at multiple time scales, this paper proposes a weak grid identification model for transient energy balance in EES based on grid partitioning, which has an increasingly complex impact on the weak areas of transient energy balance in the sending end network. Firstly, study the accumulation of port energy during transient faults and the propagation mechanism of port energy in the sending end system, and establish an EES transient energy propagation mechanism model; Then, considering the energy balance support requirements of nodes, establish an EES grid partitioning model; Afterwards, based on the characteristics of transient energy propagation and a grid partitioning model, an identification model for weak areas of transient energy balance in EES is constructed; Finally, based on actual operating data, numerical simulations were conducted, and the results showed that the proposed weak grid identification model for transient energy balance can meet the requirements for transient stability analysis and transient energy balance characteristics analysis during actual operation of power grid.