Assessment of Daily Cost of Reactive Power Procurement by Smart Inverters release_jmo5piaibves5ej4s7yw4p2a5q

by Martha N. Acosta, Francisco Gonzalez-Longatt, Manuel A. Andrade, José L. Rueda, Harold R. Chamorro

Published in Energies by MDPI AG.

2021   Volume 14, Issue 16, p4834

Abstract

The reactive power control mechanisms at the smart inverters will affect the voltage profile, active power losses and the cost of reactive power procurement in a different way. Therefore, this paper presents an assessment of the cost–benefit relationship obtained by enabling nine different reactive power control mechanisms at the smart inverters. The first eight reactive power control mechanisms are available in the literature and include the IEEE 1547−2018 standard requirements. The ninth control mechanism is an optimum reactive power control proposed in this paper. It is formulated to minimise the active power losses of the network and ensure the bus voltages and the reactive power of the smart inverter are within their allowable limits. The Vestfold and Telemark distribution network was implemented in DIgSILENT PowerFactory and used to evaluate the reactive power control mechanisms. The reactive power prices were taken from the default payment rate document of the National Grid. Simulation results demonstrate that the optimal reactive power control mechanism provides the best cost–benefit for the daily steady-state operation of the network.
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