Improving Distribution System State Estimation by Including Volt-Var Control Information.

Autor: Sampaio Pinto, Miguel F. M., de Melo, Vitor H. P., Massignan, Julio A. D., Pereira Jr., Benvindo R., London Jr., João B. A.
Zdroj: Journal of Control, Automation & Electrical Systems; Oct2024, Vol. 35 Issue 5, p899-908, 10p
Abstrakt: The increasing penetration of distributed energy resources poses new challenges for operating distribution systems, as high penetration levels are causing adverse grid impacts. In this context, active grid regulation, such as the smart inverters functions recommended in IEEE 1547–2018, has become necessary. In this regard, advanced monitoring techniques, such as state estimation, are promising alternatives to enhance the operation of active distribution networks. However, the lack of reliable information is a technical limitation for applying estimation algorithms to distribution circuits. Therefore, knowledge of the control mode of distributed energy resources may be valuable information to enhance the accuracy of the estimates. This paper proposes to include the volt-var smart inverter function in WLS three-phase state estimation via iterative adjustment. The volt-var control variables are introduced as pseudo-measurements in the first stage, and the second one ensures the control and state variables' compliance with the control model. The validation and benefits of the proposed method are presented via simulation results in the IEEE 34-node test feeder. [ABSTRACT FROM AUTHOR]
Databáze: Supplemental Index
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