Calculation Method of Power Flow in AC&DC Hybrid Distribution System with Flexible Power Distribution Equipment

doi:10.3969/j.issn.1000-7229.2018.05.007

Abstract

Abstract: ABSTRACT： This paper proposes the power flow model of AC& DC hybrid power distribution system, in which distributed generators and mixed loads plug and play and flexible power distribution units are the core. Forward-backward sweep method is used for alternate iterative solution. The power flow equations of flexible power distribution units are obtained by establishing equivalent model of the flexible power distribution units considering advanced control strategies and the loss. Meanwhile, according to the operation characteristics of distributed generators and mixed loads, corresponding power flow models are established respectively, whose node equivalent is carried out. And then, the power flow equations of AC and DC networks are established according to the system structure. Finally, the proposed power flow model and algorithm are validated by examples. Simulation results show that the proposed power flow model of AC&DC hybrid power distribution system has high accuracy, and the power flow algorithm has a certain degree of reliability and flexibility for AC& DC hybrid power distribution, active power flow of multi-directional power flow and other issues.

Key words: KEYWORDS： AC&DC hybrid power distribution system, flexible power distribution equipment, forward-backward sweep method, alternate iterating algorithm

CLC Number:

WANG Cong, XU Xiaoxian,SHA Guanglin， DUAN Qing,GUO Jing,ZHANG Lan.

Calculation Method of Power Flow in AC&DC Hybrid Distribution System with Flexible Power Distribution Equipment

[J]. Electric Power Construction, 2018, 39(5): 56-.

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