Modelling and Analysis of Lightning Overvoltage Protection of MV Cable Laterals Connected with Overhead Lines

  • Murtaza Hashmi Aalto University
  • Matti Lehtonen Aalto University
  • Seppo Hänninen VTT Technical Research Centre of Finland
Keywords: Lightning, overvoltage protection, EMTP-ATP, cable laterals, surge arresters

Abstract

This paper describes the lightning overvoltage protection schemes of cable laterals connected with MV overhead line. The various protection schemes are modelled and investigated are carried out on the simulation results. The simulations are performed using EMTP-ATP simulation environment, which is a strong tool to analysis transient behaviour of MV network components. The simulated lightning surge is struck on one of the overhead line phases and overvoltage effects are investigated down the cable connected with overhead line. The cable laterals are consisted of sub-laterals which are also simulated in this study. Generally, the surge arresters are installed at the junction of overhead line and cable and at far end of the cable. The various mitigation methods and protection schemes for protecting MV cable laterals are proposed on the basis of surge arresters locations, sub-laterals connections, and cable length.

DOI: http://dx.doi.org/10.5755/j01.eee.123.7.1325

Author Biographies

Murtaza Hashmi, Aalto University

Post-doctoral Researcher,

Department of Electrical Engineering

School of Electrical Engineering, Aalto Univeristy

Matti Lehtonen, Aalto University

Professor,

Department of Electrical Engineering

School of Electrical Engineering, Aalto University

Seppo Hänninen, VTT Technical Research Centre of Finland

Technology Manager,

Department of Energy Systems

VTT Technical Research Centre of Finland

 

Published
2012-07-01
Section
ELECTRICAL ENGINEERING