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Power System Stabilizers
E2 Power Systems has the tools, techniques and engineering expertise to correctly measure the system resonant frequencies, generator frequency response and set these programmable constants. E2 Power Systems provides PSS installation, commissioning and modeling studies. Services include:
Power systems can be simulated on personal computers with appropriate software. Such simulations can predict large area-wide power outages caused by resonant swinging power flow in agreement with actual historical outages. Similarly the same computer mathematical equations have been programmed into the Power System Stabilizer subroutines of the modern voltage regulator.
Power System Stabilizers (PSS) can modulate the Synchronous machine's voltage to instantaneously take real power from the system or put real power into the system by varying the angle between magnetic moment or the rotating field and the rotating magnetic field of the three phase electric system reflected in the voltage on the stationary part of the Synchronous machine. If the adjustments of the PSS are set correctly, then power swings into or out of the Synchronous machine will act to dampen the system-wide resonant power swings and improve system stability. If the adjustments are set incorrectly, then the opposite is true.
Power System Stabilizers are being used on generators from 35MW and on groups of machines totaling 75MW in facilities that are connected to the transmission system.
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