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Frequent failures and increased maintenance in a 30-year old 230kV air insulated switchyard (AIS) of a large gas plant had caused the existing installation to be unreliable to provide uninterrupted power supply to critical plant operations. The replacement parts from original equipment manufacturers became scarce and expensive. The maintenance activities in severe and extremely hot middle-east weather...
One of Saudi Aramco's gas exploration expansion plans consists of powering an unmanned offshore platform via a 13.8 kV submarine cable. The closest available source substation (SS) is located onshore; approximately 107 km from the platform. Power systems analyses were conducted under various loading conditions. Upon starting the 11500 HP motor, at the onshore SS, severe system voltage drops were observed...
One of Saudi Aramco's gas exploration expansion plans consists of powering an offshore platform via a 13.8 kV, 56 km subsea cable. Under various loading conditions on the offshore platform, voltage fluctuation and control becomes problematic. The installation of a 13.8 kV shunt capacitor bank (SCB) and shunt reactor bank (SRB), was initially introduced to remedy voltage control. During transient analysis,...
In spite of the great advances in increasing the reliability, and technical and economic viability of seawater desalination by reverse osmosis (RO) made over the past decade, its commercial application is still limited. Unit design is highly dependent on the quality of the feedwater and pretreatment method used to safeguard membrane performance. Work is in progress at Doha Research Plant (DRP), in...
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