Project Details
Toshka Pumping Station
Project Date: 2008-03-30
Description:
A scientific team studied the results obtained on the 30th of March 2008 and found the solution for the problem which caused the 18th unit not to operate. The Following modifications were done to run 18 units. Some of these points were for the LCI circuit as follows; LCI software changed ACR (Automatic Current Regulator) gain from 100% to 75% to reduce the current fluctuation, and changed ASR (Automatic Speed Regulator) gain. Changes of pulse mode period and current limiter from 0.7sec to 1.4 sec /peak current reduce approximately 100% to 40% the shock to network. The LCI hardware; changing the voltage reference position from the secondary side of the main transformer to the primary one, to be strong against voltage fluctuation. The harmonic filter units (HMF) hardware; the 3rd order HMF is removed from each unit