Research on mutual support capacity analysis and optimization evaluation of mutual support capacity for interconnected regional power grids

Authors

Zhiqiang LIU, Electric Power Research Institute, State Grid Inner Mongolia Eastern Electric Power Co., Ltd., Hohhot 010020, China
Geng CHEN, Electric Power Research Institute, State Grid Inner Mongolia Eastern Electric Power Co., Ltd., Hohhot 010020, China
Aihong TANG, School of Automation, Wuhan University of Technology, Wuhan 430070, ChinaFollow
Caifu CHEN, Electric Power Research Institute, State Grid Inner Mongolia Eastern Electric Power Co., Ltd., Hohhot 010020, China
Lulu MA, School of Automation, Wuhan University of Technology, Wuhan 430070, China

Keywords

source-load matching; interconnected regional power grid; complementary characteristic; electrical energyinteraction; mutual support capacity optimization evaluation

Abstract

In order to determine the mutual support capacity between regional power grids with complementary characteristics in terms of new energy output and electrical load demand, fully leverage the mutual support advantages of cross-regional interconnected grid capacity, reduce allocation of system reserve capacity, and enhance system operation reliability, the complementary characteristics between new energy output and electrical load demand in interconnected regional power grids and the feasibility of the mutual support between regional power grids are analyzed from the perspective of source-load matching. An algorithm for quantifying the mutual support capacity of the residual power after source-load matching is proposed. To fully exploit mutual support potential while considering economic efficiency, based on the principle that all regional power grids are given priority to participating in internal electric energy interaction, a spatial-temporal mutual support capacity optimization evaluation model of regional grids is constructed, which incorporates constraints such as internal and external power exchange within the system and residual power mutual support capacity after source-load matching, so as to minimize the overall operational cost of interconnected regional power grids. The Cplex solver embedded in MATLAB is employed to perform case simulation analysis and obtain the solution, thereby validating the effectiveness of the proposed model.

DOI

10.19781/j.issn.1673-9140.2025.06.002

First Page

12

Last Page

22

Recommended Citation

LIU, Zhiqiang; CHEN, Geng; TANG, Aihong; CHEN, Caifu; and MA, Lulu (2026) "Research on mutual support capacity analysis and optimization evaluation of mutual support capacity for interconnected regional power grids," Journal of Electric Power Science and Technology: Vol. 40: Iss. 6, Article 2.
DOI: 10.19781/j.issn.1673-9140.2025.06.002
Available at: https://jepst.researchcommons.org/journal/vol40/iss6/2