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| Content Provider | IET Digital Library |
|---|---|
| Author | Jha, Rahul R. Dubey, Anamika Schneider, Kevin P. |
| Abstract | Voltage control devices are employed in power distribution systems to reduce the power consumption by operating the system closer to the lower acceptable voltage limits; this technique is called conservation voltage reduction (CVR). The different modes of operation for system's legacy devices (with binary control) and new devices (e.g. smart inverters with continuous control) coupled with variable photovoltaic (PV) generation results in voltage fluctuations which makes it challenging to achieve CVR objective. This study presents a two-timescale control of feeder's voltage control devices to achieve CVR that includes: (i) a centralised controller operating in a slower time-scale to coordinate voltage control devices across the feeder; and (ii) local controllers operating in a faster timescale to mitigate voltage fluctuations due to PV variability. The centralised controller utilises a three-phase optimal power flow model to obtain the decision variables for both legacy devices and smart inverters. The local controllers operate smart inverters to minimise voltage fluctuations and restore nodal voltages to their reference values by adjusting the reactive power support. The proposed approach is validated using the IEEE-123 bus (medium-size) and R3-12.47-2 (large-size) feeders. It is demonstrated that the proposed approach is effective in achieving the CVR objective for unbalanced distribution systems. |
| Starting Page | 801 |
| Ending Page | 813 |
| Page Count | 13 |
| Volume Number | 3 |
| e-ISSN | 25152947 |
| Issue Number | Issue 6, Dec (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-stg/3/6 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-stg.2020.0051 |
| Journal | IET Smart Grid |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2020-09-07 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
| Subject Keyword | Binary Control Centralised Controller Conservation Voltage Reduction Continuous Control Control of Electric Power System CVR Objective Distribution Network IEEE-123 Bus Feeder Load Flow Control Local Controller Nodal Voltage Photovoltaic Power System Power Consumption Power Distribution Control Power System Control PV Variability R3-12.47-2 Feeder Reactive Power Reactive Power Support Smart Inverter Solar Power Stations Three-phase Optimal Power Flow Model Two-timescale Control Unbalanced Distribution System Unbalanced Power Distribution System Variable Photovoltaic Generation Voltage Control Voltage Control Device Voltage Fluctuation |
| Content Type | Text |
| Resource Type | Article |
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