Abstract
The U-V or V-V winding connections of two single-phase distribution transformers are widely utilized in distribution systems to deliver power to various three-phase and/or single-phase loads. Such special winding connections of distribution transformers can cause three-phase voltage unbalance in distributions systems, which could also lead to unexpected trip of ground relay, extra power losses on distribution-system lines, reduced operating efficiency of induction-motor loads, etc. This paper proposes a distribution static synchronous compensator (D-STASTCOM) to effectively improve the voltage unbalance of a distribution system connected with a microgrid system. The studied microgrid system contains various renewable-energy resources, a diesel-engine generator, and three distribution transformers with U-V and/or V-V winding connections. The simulation results show that the proposed D-STATCOM with the designed controller can effectively reduce voltage unbalance of the distribution system connected with the studied microgrid system when the distribution transformers have U-V and/or V-V winding connections.
| Original language | English |
|---|---|
| Pages (from-to) | 2002-2011 |
| Number of pages | 10 |
| Journal | IEEE Transactions on Industry Applications |
| Volume | 54 |
| Issue number | 3 |
| DOIs | |
| Publication status | Accepted/In press - 22 Dec 2017 |
Keywords
- Automatic voltage control
- distribution static synchronous compensator
- distribution transformer
- Electrical engineering
- Generators
- Mathematical model
- microgrid system
- Microgrids
- U-V/V-V winding connections
- Voltage unbalance
- Windings
ASJC Scopus subject areas
- Control and Systems Engineering
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering