Using PV and QV curves with the meaning of static contingency screening and planning |
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Authors: | AC Zambroni de Souza Fritz W Mohn Isabella F Borges Tito R Ocariz |
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Affiliation: | a Federal University at Itajubá, Av. Pinheirinho, 1303, BPS, Cx. P. 50, Itajubá 37400-903, Brazil b Câmara dos Deputados, Praça dos Três Poderes, CEP 70160-900, Brasília, DF, Brazil c Companhia Energética de Goiás-CELG, CEP 74 000-000, Goiânia, GO, Brazil d ANDE, Padre Cardozo 355, Asunción, Paraguay |
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Abstract: | This paper investigates the use of the QV and PV curves in the planning scenario, when some system reinforcements and contingency screening are analyzed. The idea is to employ the continuation method to obtain the system load margin and the QV curve to calculate the reactive power reserve associated with each bus. Combining these approaches enables one to identify the system critical area, the actual operating conditions, the most severe contingencies and the most important reinforcements. The methodology proposed may provide important signals to system planners, since the planning is focused under the voltage security point of view. The ideas are tested with the help of some academic systems and two real (a Brazilians and a Paraguayan) systems with all the system limits considered. |
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Keywords: | Voltage collapse Continuation methods QV curve Contingency screening System reinforcements |
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