Application of the transient-energy-function method to stressed large-scale power systems

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5986183

Rajagopal, S

This dissertation attempts to apply the transient energy function (TEF) method of direct stability analysis to stressed large-scale power systems. In a stressed system, the post-disturbance network is often characterized by the weak synchronizing forces caused by large transmission impedances. When the instability occurs following a disturbance, a large group of generators may separate from the system. This is known as the inter-area mode of system separation. The analysis of stressed systems by the TEF method requires overcoming a number of analytical and numerical issues. The major issues identified and dealt with are the following: (i) identifying the group of machines most seriously affected in the post-disturbance system, known as the mode of disturbance (MOD) determination, and (ii) obtaining and verifying the unstable equilibrium point (UEP) solution. The determination of MOD involves the inspection of several candidate modes of disturbance provided by the analyst. The MOD has to be determined in order to identify the UEP relevant to the disturbance under investigation, and to calculate the portion of kinetic energy responsible for system separation.

• Research Organization: Iowa State Univ. of Science and Technology, Ames (USA)
• OSTI ID: 5986183
• Country of Publication: United States
• Language: English

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DISTURBANCES
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FUNCTIONAL ANALYSIS
MATHEMATICS
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STABILIZATION
TRANSIENTS