Overcurrent protection based on ANNs for smart distribution networks with grid‐connected VSIs. Issue 7 (16th December 2020)

• Record Type: Journal Article
• Authors: Bakkar, Mostafa; Bogarra, S.; Córcoles, F.; Iglesias, J.
• Is Part Of: IET generation, transmission & distribution. Volume 15:Issue 7(2021)
• Page Start: 1159
• Page End: 1174
• Publication Date: 2020-12-16
• Subjects: Electric power production -- Periodicals; Electric power transmission -- Periodicals; Electric power distribution -- Periodicals; 621.3105
• DOI: 10.1049/gtd2.12093
• Languages: English
• ISSNs: 1751-8687

Abstract

Abstract: Recently, the global concern for protection coordination is growing with the impact of distributed generators connected to medium voltage distribution system. Effective protection strategies need to be developed in order to avoid undesirable tripping when distributed generators based on Voltage Source Inverters are connected to the medium voltage grid. According to Spanish grid code requirements, the inverter controller response in this paper is assessed under grid faults integrating low voltage ride through capabilities. This paper presents a novel use of a communication‐based directional relay system with artificial neural network, an appropriate option for smart grids protection. A protection strategy is proposed using two algorithms. The first algorithm is based on gathering data of all the protective devices in the grid and send it to a centralized controller. The second algorithm is based on a zone controller using the communication between the peer protection devices in the same line. One of the main advantages of the zone controller is that no need to modify the protection devices setting in case of temporary grid reconfigurations. The behaviour of the protection algorithms is validated through both simulations in MATLAB‐Simulink and experimental results.