Research on Load State Sensing and Early Warning Method of Distribution Network under High Penetration Distributed Generation Access

Cailian Gu (), Yibo Wang, Weisheng Wang and Yang Gao
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Cailian Gu: Shenyang Institute of Engineering, Shenyang 110136, China
Yibo Wang: College of Information Science and Engineering, Northeastern University, Shenyang 314001, China
Weisheng Wang: College of Information Science and Engineering, Northeastern University, Shenyang 314001, China
Yang Gao: Shenyang Institute of Engineering, Shenyang 110136, China

Energies, 2023, vol. 16, issue 7, 1-15

Abstract: Aiming at the problems of power flow fluctuation and voltage exceeding standard caused by high permeability distributed power supply access, this paper proposes a load state perception early warning method for distribution networks. Firstly, the random behavior characteristics and voltage early warning mechanisms of power supply and load in distribution networks are analyzed, the dynamic model of distribution networks based on complex network theory is established, and the risk index of voltage exceeding limits under the conditions of high permeability distributed power supply access is put forward. Secondly, the random power flow of distribution networks based on the Monte Carlo method is studied by sampling and analyzing the dynamic model of distribution networks. Then, the risk calculation and safety assessment of voltage exceeding limits are carried out on the currently extracted model, and the risk control strategy of distribution network operation is put forward. Finally, an improved IEEE30-node distribution network topology is proposed. Through simulation analysis, it is proven that the load situation awareness early warning method of distribution networks can effectively predict, improve the security of distribution networks, and provide timely early warning information for maintenance personnel.

Keywords: distributed power supply; load flow analysis; new energy; power system (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: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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