NGCP's power restoration of Southern Tagalog area during system blackout using Kalayaan Pump and storage power plant.

Date

4-2012

Degree

Bachelor of Science in Electrical Engineering

Major Course

Major in Power Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Dulce. Elvin D.

Committee Member

Valdez, Billy John Q.

Abstract

Voltage instabilities in power systems arise from heavy loading, inadequate reactive support resources, unforeseen contingencies and/or mis-coordinated action of tap- changing transformers. The risk of voltage instability increases as the transmission system becomes heavily loaded. The typical scenario of these instabilities starts with a high system loading, followed by a relay action due to a fault, a line overload, or operation beyond the excitation limit. Overload of one, or a few power system elements, may lead to a cascading overload of many more elements, mostly transmission lines, and ultimately, it may lead to a complete power system blackout. The process of Black Start Recovery Procedure, initiated by the System Operator, has the purpose of energizing the Grid and assisting other generating units to start. The procedure includes the following: 1) energizing of transmission lines to adjacent substations; 2) maintaining voltage below 253 kV (for 230 kV system), 127 kV (for 115 kV system), and 76 kV (for 69 kV system) for continuous operation of transformer banks; 3) making sure that the generators have MVAR reserve to absorb line charging; 4) energizing shunt capacitors to help reduce system high voltage; 5) maintaining frequency at 60.5 Hz before energizing feeder loads; and finally 6) synchronizing to major power station with synchronizing capability.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology

Call Number

Thesis

Document Type

Thesis

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