An Accurate Power Flow Method for Microgrids with Conventional Droop Control

Fang Lu and Hongda Liu ()
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Fang Lu: College of Intelligent Systems Science and Engineering, Harbin Engineering University, Harbin 150009, China
Hongda Liu: Yantai Research Institute, Harbin Engineering University, Harbin 150009, China

Energies, 2022, vol. 15, issue 16, 1-15

Abstract: With conventional droop control, the droop relationship between the voltage and reactive power is not purely linear because of the filter reactance. This paper focuses on the theoretical analysis to account for this characteristic and presents a precise power flow method for conventional droop control. The proposed method is universal, which can handle not only conventional droop control, but also other control strategies, such as robust droop control, constant power control, and constant voltage–frequency control. It can also handle frequency-dependent active and reactive power loads and is adapted for islanded and grid-connected systems. The proposed method extends the applicability of conventional power flow methods to microgrids so that the framework of the method is generic; any conventional power flow algorithm can be adapted to this framework. Compared with the time-domain simulation method, the proposed method is accurate, simple, and easy to implement for industrial applications.

Keywords: conventional droop control; inverter; microgrids; power flow (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 (4)

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