Intelligent Control of On-Load Tap Changing Transformer

Author

Bahadornejad, Momen ; Nair, Nirmal-Kumar C.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Auckland, Auckland, New Zealand

Volume

5

Issue

5

fYear

2014

fDate

Sept. 2014

Firstpage

2255

Lastpage

2263

Abstract

In this paper, an intelligent on-load tap changer (OLTC) control scheme is introduced that is based on the changes of the transformer primary side voltage and current caused by the OLTC action. It is shown that the changes in the voltage and current can be used to estimate the supply system Thevenin impedance and to monitor the OLTC stability by using a simple index. The proposed method is validated by simulation on a standard test system. Different cases are studied to demonstrate the ability of the method in monitoring the OLTC stability and avoiding or mitigating the possible instabilities.

Keywords

electric current control; intelligent control; on load tap changers; voltage control; OLTC control scheme; OLTC stability monitoring; instability avoidance; instability mitigation; intelligent on-load tap changer control scheme; on-load tap changing transformer; standard test system; supply system Thevenin impedance estimation; transformer primary side current change; transformer primary side voltage change; Estimation; Impedance; Indexes; Power system stability; Stability criteria; Voltage measurement; Intelligent electronic device; on-load tap changer; power system modeling; power system stability; reverse control action;

fLanguage

English

Journal_Title

Smart Grid, IEEE Transactions on

Publisher

ieee

ISSN

1949-3053

Type

jour

DOI

10.1109/TSG.2014.2329017

Filename

6850031