학술논문

A General Methodology for Short-circuit Calculations in Hybrid AC/DC Microgrids
Document Type
Periodical
Source
IEEE Transactions on Industry Applications IEEE Trans. on Ind. Applicat. Industry Applications, IEEE Transactions on. 59(3):2742-2749 Jun, 2023
Subject
Power, Energy and Industry Applications
Signal Processing and Analysis
Fields, Waves and Electromagnetics
Components, Circuits, Devices and Systems
Microgrids
Resistance
IEC Standards
Short-circuit currents
Voltage
Standards
Mathematical models
AC/DC microgrids
fault calculation
hybrid systems
short-circuit
Language
ISSN
0093-9994
1939-9367
Abstract
In this paper, the issues related to short-circuit calculations in hybrid AC/DC microgrids are discussed. The reference standard for short-current calculations in DC systems is the IEC 61660, which provides a mathematical formulation of the problem. The standard only includes radial DC grids and does not consider a more complex system, such as meshed DC systems or a hybrid AC/DC microgrid. This paper proposes a generalized approach that can be used independently of the characteristics of the hybrid system. The proposed approach is applied to four test microgrids with different distributed sources and number of nodes and the results are compared with those obtained simulating the same grids with Neplan 360.