Comparative investigation of lightning impulse tests on electrical submersible pump motors

Ibrahim A. Metwally, Adel Gastli, Mohamed Al-Sheikh

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper investigates the capability of some samples of electrical submersible pump (ESP) motors to withstand standard basic "lightning" impulse level (BIL) and to get the destructive voltage for all phases. Tests were performed on samples from different ESP vendors and with a voltage rating between 1 kV and 2 kV, to fulfill the lightning impulse standard test requirements. All the tested ESP motors showed a decrease in the terminal impedance between one line and the motor casing with the frequency, i.e. low-pass filter effect for fast transient overvoltages. In addition, all ESP motors passed the standard lightning impulse withstand tests with no significant change in the terminal impedance. Used ESP motor failed at 37 pu of the BIL, while all the new ESP motors failed at much lower level up to 22 pu. This trend is attributed to the better oil infiltration in the used motor during runtime than in the new motor with zero runtime.

Original languageEnglish
Pages (from-to)1065-1072
Number of pages8
JournalElectric Power Systems Research
Volume77
Issue number8
DOIs
Publication statusPublished - Jun 2007

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Keywords

  • Electrical submersible pumps
  • ESP motors
  • Lightning impulse test

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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