Kron Reduction Based on Node Ordering Optimization for Distribution Network Dispatching with Flexible Loads

Huihui Song, Linkun Han, Yichen Wang, Weifeng Wen and Yanbin Qu
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Huihui Song: School of New Energy, Harbin Institute of Technology, Weihai 264209, China
Linkun Han: State Grid Tai’an Electric Power Company, Tai’an 271000, China
Yichen Wang: School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
Weifeng Wen: School of New Energy, Harbin Institute of Technology, Weihai 264209, China
Yanbin Qu: School of New Energy, Harbin Institute of Technology, Weihai 264209, China

Energies, 2022, vol. 15, issue 8, 1-14

Abstract: Kron reduction is a general tool of network simplification for flow calculation. With a growing number of flexible loads appearing in distribution networks, traditional Kron reduction cannot be widely used in control and scheduling due to the elimination of controllable and variable load buses. Therefore, this paper proposes an improved Kron reduction based on node ordering optimization whose principles guarantee that all the boundary nodes are retained eventually after eliminating the first row and the first column in every step according to the order, thereby making it possible to take full advantage of their potential to meet different requirements in power system calculation and dispatching. The proposed method is verified via simulation models of IEEE 5-bus and 30-bus systems through illustrating the dynamic consistency of the output active power of the generator nodes and the power flow data of preserved nodes before and after reduction.

Keywords: Kron reduction; node ordering optimization; flexible loads; distribution network dispatching; graph theory (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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