Analysis of Lightning-Caused Distribution Transformer Failures in Ghana

Solomon Nunoo, Anthony Ekow Sey


The Electricity Company of Ghana (ECG) experiences several distribution transformer failures every year. Among the several factors that lead to this is the issue of lightning. This paper presents an analysis of lightning-caused distribution transformer failure in Ghana and proposes remedial measures to tackle the menace. This will help the ECG to protect their distribution transformers and other equipment from lightning transients. Data collected indicate that ECG Global experienced 477 lightning-caused distribution transformer failures between 2011 and 2015. The results show that Western Region experiences the highest number of lightning-caused distribution transformer failures in ECG Global. To address this problem, this paper proposes a design that uses lightning protection system at both terminals of the distribution transformers. Simulation results show improved performance by the proposed method.


Distribution Transformers, Transformer Failures, Lightning Protection

Full Text:



Silva, A. C., M. Castro, A. R., and Miranda, V. (2012), “Transformer Failure Diagnosis by Means of Fuzzy Rules Extracted from Kohonen Self-Organizing Map”, International Journal, Electrical Power, Vol. 42, pp. 34-42.

Taylor, T. O. and Alehosseini, H. A. (2015), “Necessity of Employment of Active Influence on Lightning in Contemporary Lightning Protection”, 25th International Conference on Lightning Protection, Krakow, Poland, pp.54-67.


  • There are currently no refbacks.