Reactive power redispatch for loss reduction using a modified power flow jacobian

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Zambroni de Souza, A.C. and Leme, R. and Lo, Kwok and Stacchini de Souza, J.C. and Almeida, A.B. (2012) Reactive power redispatch for loss reduction using a modified power flow jacobian. IET Generation, Transmission and Distribution, 6 (7). pp. 657-664. ISSN 1751-8695 (https://doi.org/10.1049/iet-gtd.2011.0685)

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Abstract

This study addresses the problem of reactive power redispatch under bilateral power transactions. The proposed approach is to reduce active loss in a critical area, under the voltage collapse point of view, which is identified by the tangent vector technique. A methodology that uses an augmented load flow Jacobian is proposed to redispatch the reactive power and can be easily implemented in ordinary power flow programmes. Tests with the IEEE 14-bus test system and with a real Brazilian-107 bus system are carried out to illustrate the proposed approach. Results obtained by solving an optimal power flow problem are also presented for validation purposes.

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