Improving Power Quality in Low-Voltage Networks Containing Distributed Energy Resources

Author:

Mazumder Sumit,Ghosh Arindam,Zare Firuz

Abstract

Abstract Severe power quality problems can arise when a large number of single-phase distributed energy resources (DERs) are connected to a low-voltage power distribution system. Due to the random location and size of DERs, it may so happen that a particular phase generates excess power than its load demand. In such an event, the excess power will be fed back to the distribution substation and will eventually find its way to the transmission network, causing undesirable voltage–current unbalance. As a solution to this problem, the article proposes the use of a distribution static compensator (DSTATCOM), which regulates voltage at the point of common coupling (PCC), thereby ensuring balanced current flow from and to the distribution substation. Additionally, this device can also support the distribution network in the absence of the utility connection, making the distribution system work as a microgrid. The proposals are validated through extensive digital computer simulation studies using PSCADTM.

Publisher

Walter de Gruyter GmbH

Subject

Energy Engineering and Power Technology

Reference26 articles.

1. Power Quality Enhancement Using Custom Power Devices

2. A minimal harmonic controller for a STATCOM;Ben-Sheng;IEEE Trans Ind Electron,2008

3. Operation of a DSTATCOM in voltage control mode;Mishra;IEEE Trans Power Deliv.,2003

4. Inverter control using output feedback for power compensating devices;Ghosh;IEEE Asia-Pac Reg-10 Conf (TENCON),2003

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