Work

Reliability evaluation of electric-gas-thermal coupling systems considering the post-fault operation modes of user-level integrated energy system

Year: 2024

Type: article

Abstract: The distribution network with user-level integrated energy systems (UIESs) represents a new form of future energy systems. Traditional reliability evaluation methods for distribution networks with multiple UIESs are no longer applicable due to their multi-energy coupling and island operation. To address this, a reliability evaluation method for electric-gas-thermal coupling systems with UIESs is introduced. Post-fault operation modes of UIESs are proposed considering the multi-energy cooperation and joint island operation. The criteria of fault correlation matrixes are further established to quickly determine the energy supply state of the loads and the operation mode of the UIESs. Moreover, a static island division model and a dynamic load reduction model for the UIES are embedded in the reliability assessment. The effectiveness and practicality of the proposed reliability evaluation method are verified, as the results accurately calculate reliability indices and offer guidance for micro-energy grid operations under various fault conditions.

Source: iScience

DOI: 10.1016/j.isci.2024.110922

Authors: Bo Zhang, Jia Li, Lu Zhang, Wei Tang, Yan Sun

Institutions: China Agricultural University, State Grid Corporation of China (China)

Language: English

Topic: Power System Reliability and Maintenance

Subfield: Safety, Risk, Reliability and Quality

Field: Engineering

Domain: Physical Sciences

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

Open Access status: gold

Estimated APC paid: $3,150