Autonomous Decentralized Voltage Profile Control Method Using Communication Function of Smart Meters in Distribution Systems

Abstract

SUMMARY The introduction of renewable energy sources, such as photovoltaics or wind turbines, has been greatly promoted recently in order to improve the energy and environmental issues. In distribution systems with a large number of distributed generators, voltage profile management becomes one of serious problems due to the reverse power flow. Usual PCS (Power Conditioning System) reduces their active power output if they detect the voltage violation from the upper limit in order to get the voltage profile back to the proper range. However, since the magnitude of voltage fluctuation at the nodes with PCSs are different each other, there is a possibility that the amount of the curtailment are not the same among them. Hence, in this paper, we developed a new method which can solve the problem by using information exchange between PCSs using communication function of smart meters supposing the communication among them is available every 30 min. The proposed method was tested in 38‐node model system and its effectiveness was shown.

Predictive Voltage Control Scheme Based on Estimation of Short‐Time‐Ahead Voltage Fluctuation in Distribution System withPVs

“…The recent years have witnessed a significant amount of research and development pertaining to voltage control schemes in distribution systems to overcome the voltage violation problems, such as advancing the tap control scheme of existing voltage regulators [2][3][4][5], voltage control utilizing reactive power control such as static var. compensators (SVCs) [6,7], and voltage control utilizing consumer equipment such as PV inverters and chargers/dischargers for electric vehicles [8][9][10][11][12][13][14]. Reactive power control schemes using SVCs demonstrate the limitation that the voltage control performance is heavily dependent on the SVC a Correspondence to: Shinya Yoshizawa.…”