Continuation power flow considering area net interchange constraint

Abstract

Interconnected power systems not only allow to the areas to provide mutual assistance, but also import or export energy with respect to optimize energy resources assessment where, a cost reduction involved in the generation of power required to meet its demand. To determine the required control actions, in the planning and operation stages, it is important to verify the loading margins for both the normal operation and the different conditions of contingencies that may eventually occur. In this paper a continuation power flow that allows obtaining the loading margin and maximum active power transfer considering the area interchange control is proposed. From the results of the IEEE systems (9 and 118 buses), a difference of up to twelve percent in the active power transfer capacity is verified compared to the cases without area interchange control. The method also highlights the effects of the loop flow which occur as a consequence of the existence of parallel paths in the interconnected network.

State vulnerability assessment against false data injection attacks in AC state estimators

“…The IEEE 118 bus system can be divided into three areas with eight power corridors, as described in ref. [30]. The details of these corridors are listed in Table 3.…”

Development of an Interactive Program to Study of the Continuation Power Flow

“…Dessa forma, possibilitam que algoritmos com precisão simples sejam usados tanto na vizinhança quanto no próprio PMC. Essa é a razão principal de sua ampla utilização para o traçado das curvas P-V [15][16][17][18][19]. Outra ideia envolvendo o FPC é a análise de contingências (saída de operação de um ou mais componentes do sistema de forma inesperada, por exemplo, a perda de uma linha de transmissão) [ Neste contexto, este trabalho apresenta a interface gráfica desenvolvida com o intuito de introduzir os conceitos relacionados com a análise estática da estabilidade de tensão, o fluxo de potência continuado e o traçado das curvas P-V de pré-e pós-contingência de um sistema elétrico de potência.…”