DG DemoNet: Experiences from volt/var control field trials and control algorithm advancements

Hierarchical and distributed control concept for distribution network congestion management

“…Methods can operate in real-time based on measurements or state estimation data (e.g. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]) or predetermine a control schedule for the controllable resources based on forecasted load and production (e.g. [18][19][20][21]) or combine the two approaches [22].…”

“…In centralised methods (e.g. [2][3][4][5][6][7][8][9][10][11][12][13]), measurement data is gathered to one point in the network (usually the control centre), control decisions are made based on that data and control commands are then sent to the controllable resources. The advantages of centralised methods are that they can take into account the whole network when determining the control actions and that they can be relatively easily integrated into existing systems of distribution system operators (DSOs).…”

Balancing in low voltage grids to increase decentralized generation

“…Some solutions are already implemented in Austrian smart grid demo regions ( [2], [3], [4] and [5]):…”

Investigation of Phase-wise Voltage Regulator Control Logics for Compensating Voltage Deviations in an Experimental Low-voltage Network

“…The results showed that the phase-wise OLTC can significantly improve the penetration of PVs, since it reduces phase-neutral voltage deviations from the rated value, with acceptable increases of the voltage unbalance factor. Regarding field trials, [26] and [27] In this study, we aim to examine the control logics of a phase-wise on-load tap-changer transformer in an experimental low-voltage network, considering the line-drop compensation technology. To achieve the objective, the experimental low-voltage system is built and three types of control logic with regard to the OLTC are studied in the system.…”

“…In addition, the current studies focus on simulation-based validation that means experimental-based validation is still largely missing in the literature. To address the aforementioned problems, several studies are performed to investigate the control performance provided by a single-phases on-load tap-changer transformer [21]- [25] and validate the OLTC control in an experimental environment [26], [27].…”