ELECTRICAL TRANSIENT STABILITY AND UNDERFREQUENCY LOAD SHEDDING ANALYSIS FOR A LARGE PUMP STATION

Electrical transients from faults, loss of generation, and toad swings can disrupt pump station operations, isolated stations with no utilit y tie, and those with weak utility ties, are especially at risk, Relat ive to this problem, the following four main issues are addressed. 1) Analyze the methods that use high-speed underfrequency load shedding t o maintain system stability and preserve station operations. 2) Analyz e combustion gas turbine generator and diesel generator transient resp onses, as they pertain to the electrical engineer. 3) Discuss system c omponent modeling and the use of low voltage circuit snitching devices to shed loads. 4) Compare two computer analysis program outputs for u nderfrequency load shedding responses.