Location of voltage sag source by using artificial neural network

Khairul Rijal Wagiman, S. N. Khalid, H. Shareef

Research output: Contribution to journalArticlepeer-review


Power quality (PQ) is a major concern for number of electrical equipment such as sophisticated electronics equipment, high efficiency variable speed drive (VSD) and power electronic controller. The most common power quality event is the voltage sag. The objective is to estimate the location of voltage sag source using ANN. In this paper, the multi-monitor based method is used. Based on the simulation results, the voltage deviation (VD) index of voltage sag is calculated and assigned as a training data for ANN. The Radial Basis Function Network (RBFN) is used due to its superior performances (lower training time and errors). The three types of performance analysis considered are coefficient of determination (R2), root mean square error (RMSE) and sum of square error (SSE). The RBFN is developed by using MATLAB software. The proposed method is tested on the CIVANLAR distribution test system and the Permas Jaya distribution network. The voltage sags are simulated using Power World software which is a common simulation tool for power system analysis. The asymmetrical fault namely line to ground (LG) fault, double line to ground (LLG) fault and line to line (LL) fault are applied in the simulation. Based on the simulation results of voltage sag analysis, the highest VD is contributed by LLG for both test systems. Based on the proposed RBFN results, the best performance analysis are R2, RMSE and SSE of 0.9999, 5.24E-04 and 3.90E-05, respectively. Based on the results, the highest VD shows the location of voltage sag source in that system. The proposed RBFN accurately identifies the location of voltage sag source for both test systems.

Original languageEnglish
Pages (from-to)11-30
Number of pages20
JournalJurnal Teknologi
Issue number2
Publication statusPublished - Feb 2017


  • Multi-monitor based method
  • Power quality
  • Radial basis function network
  • Voltage deviation index
  • Voltage sag

ASJC Scopus subject areas

  • General Engineering


Dive into the research topics of 'Location of voltage sag source by using artificial neural network'. Together they form a unique fingerprint.

Cite this