Optimization of overcurrent relay coordination using cuckoo search algorithm in electronic induction systems

Z S Rahmania,I Pakaya,Zulfatman Zulfatman,L Syafa’Ah

doi:10.1088/1757-899x/674/1/012037

Z S Rahmania, I Pakaya + Show 2 more

Open Access

https://doi.org/10.1088/1757-899x/674/1/012037

Copy DOI

Abstract

Overcurrent relay protection is one of the electrical power supply protection mechanisms that serve to prevent the system from overcurrent. The main issue that occurs when developing the coordination of overcurrent relays is the timing determination of the primary and back-up relay operation. The objective of this study is to develop an optimization method to result a faster operating time of relay coordination. The optimization method was developed and implemented in case of PT Semen Padang (Indarung VI) at 150 kV PLN’s source, which was operated with conventional calculation method. The Cuckoo Search Algorithm (CSA) method was proposed as optimization method for calculation. The optimization was used to set the relay time and the secondary current (Ipickup) according to the British standard to obtain the optimal Coordination Time Interval (CTI). The CSA method was calculated by MATLAB R2016 software, while the relay testing was done on the ETAP 12.6.0. Results of simulation indicate that the CSA method more capable and faster than the manual calculations in calculating relay setting coordination since almost all of the CTI values were reached in 2.0 to 4.0 seconds.

Highlights

The overcurrent relay is a relay which used to protect the system from the overcurrent noise [1]
The objective of this study is to develop an optimization method to result a faster operating time of relay coordination
After obtaining the value of time dial setting, it is necessary to create a table of primary relay and backup relay in order to know the value of Coordination Time Interval (CTI)

Summary

Introduction

The overcurrent relay is a relay which used to protect the system from the overcurrent noise [1]. To coordinate the overcurrent relay, there are many parameter values that must be reached, one of those parameters is used to get the ideal setting value. The desired operating time is as fast as possible by the time setting parameters consideration. This is done to minimize the interference effects on the electrical equipment from the arc flash. This exposure explains that failures in overcurrent relay coordination can be caused by the operating time of the back-up relay on the primary relay have not the right timing values [3]

Objectives

Methods

Results