Modal Controllability and Observability of Linear Models of Power Systems Revisited
Research Article - Electrical Engineering
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Abstract
Modal controllability/observability may be quantified. We suggested the cosine of the angle between the input or output vector and the left or right eigenvector as measures of these properties. Another measure was the minimum singular value of appropriate complex matrices. In this paper we give two slight extensions of the previous measures. The extensions specify the best direction of the input and output vectors to obtain the highest measures of controllability/observability of a mode. A 9-bus power system is used to verify these results. We hope that these results will be useful in improving control of power systems.
Keywords
Power system control Control techniques Eigenvalues and eigenvectorsPreview
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