Innovative solution for overcurrent relay coordination studies in power delivery networks using optimisation techniques

• Published in: Journal of engineering (Stevenage, England) Vol. 2018; no. 15; pp. 1103 - 1108
• Main Authors: Papaspiliotopoulos, Vasileios A, Korres, George N
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 01.10.2018
• Subjects: minimisation; minimisation problem; numerical analysis; numerical relays; OC protection coordination studies; optimisation techniques; optimum OC setting values; overcurrent protection; overcurrent protection coordination studies; overcurrent relay coordination studies; power delivery networks; protection engineers; relay protection; software package; The 14th International Conference on Developments in Power System Protection (DPSP 2018); overcurrent relay coordination studies; OC protection coordination studies; numerical relays; software package; protection engineers; minimisation problem; optimisation techniques; relay protection; optimum OC setting values; overcurrent protection; numerical analysis; overcurrent protection coordination studies; power delivery networks; minimisation
• ISSN: 2051-3305; 2051-3305
• DOI: 10.1049/joe.2018.0177

This study presents a software package developed to carry out overcurrent (OC) protection coordination studies for power delivery networks, making use of versatile optimisation models and robust solvers. The problem of setting and coordinating OC functions in modern numerical relays is formulated as a minimisation problem, subject to technical constraints which are relevant to the protection practises applied by utilities. The proposed solution aims to assist protection engineers in calculating optimum OC setting values, which is a labour-intensive task.