A two‑stage recovery strategy for damaged distribution networks considering cold load pick‑up

Authors

Yongpeng ZHANG, College of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaFollow
Lizhen WU, College of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Jianping WEI, College of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China; National Active Distribution Network Technology Research Center, Beijing Jiaotong University, Beijing 100044, China
Wei CHEN, College of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China

Keywords

damaged distribution network; cold load pick-up; distributed power supply; mixed integer linear programming; power restoration

Abstract

The development of intelligent distribution networks has improved the self-healing ability and recovery speed of the power grid. However, when the system encounters large-scale power outages, the recovery process becomes more complex. Therefore, in response to the problem of power interruption in damaged distribution networks, this paper proposes a two-stage recovery strategy for damaged distribution networks that takes into account cold load pick-up (CLPU), aiming to generate a power restoration plan for distribution networks with switch control actions. The first stage generates traditional recovery and distributed power-assisted island power supply recovery plans that support feeder reconfiguration. In the second stage, the optimal switching operation sequence is generated and transformed into a mixed integer linear programming (MILP) problem, which enables the damaged distribution network to quickly recover to its final configuration. Finally, a distribution network recovery strategy is simulated in a multi-feeder 1069-node power system for single- and multi-line faults. The results show that the proposed strategy can effectively generate switching operation sequences, make reasonable use of all resources to quickly recover distribution networks, and improve the recovery speed and capacity of damaged distribution networks.

DOI

10.19781/j.issn.1673-9140.2025.02.016

First Page

150

Last Page

162

Recommended Citation

ZHANG, Yongpeng; WU, Lizhen; WEI, Jianping; and CHEN, Wei (2025) "A two‑stage recovery strategy for damaged distribution networks considering cold load pick‑up," Journal of Electric Power Science and Technology: Vol. 40: Iss. 2, Article 16.
DOI: 10.19781/j.issn.1673-9140.2025.02.016
Available at: https://jepst.researchcommons.org/journal/vol40/iss2/16