Power Quality Analysis at Pumping Stations Network In Egypt

Document Type : Original Article

Authors

1 Faculty of Engineering, Helwan University

2 Mechanical and Elect. Research Ins. National Water Research Center

3 Faculty of Engineering, Monofia, B Universty

4 B.Sc, research Assistant, Mechanical and Elect. Research Ins.

Abstract

This paper aims mainly to implement the power quality isspes and
impact on the pumping stations networks supervised by the ministry of Water
Recourses and Inigation in Egypt. The paper outlines the strategy of monitoring
the power system disturbances at these stations with special emphasis on those
disturbances influencing the performance of the pumping units. Because the
pump stations network is large (more than 1500 pump stations) with different
hydraulic load nature, this paper adopted a pilot project to conceive the power
quality study. Two large pump stations are selected for this study at two
different locations. The rating of the pumping units ranges between 475 kW and
1 MW for each unit at an operating voltage ranges between 6.6 kV and 11 kV. A
special diagnosis system is described and installed at the selected pilot pump
stations for long periods to cover the seasonable load system at these stations.
Based on that svstem a com~rehensive data of unpredictable disturbances are
recorded, examined and analyzed to clarify the power quality picture at the
selected stations. This study also includes the lack of industry standards and
performance behavior of the drive motors at the pumping station network.
Problems conducted for investigation included all type of voltage disturbances
such as voltage surges and impulses, voltage sags, harmonic invasion,
flickering, and P.F quality. It is hoped that this study will be of special benefits
to the Ministry and other private sectors growing now in the field of cultivated
iands

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