PURPOSE:To execute automatic voltage control even in case when a load side of a transformer is varied, by controlling selectively input voltage of an automatic voltage control control relay by a flow direction of electric power from the primary and the seconary sides of the transformer. ...
TheTap-Changing Transformerblock represents a single-phase tap-changing transformer. You can vary the turns-ratio of the transformer during the simulation using the control input. Use this component to regulate or change the output voltage of a linear transformer during a simulation. To model the ...
Centralized control of transformer tap changing for voltage stability enhancement This paper presents a novel centralized control scheme for load tap-changing transformers. To implement the coordinated tap changing, by taking into accoun... CS Chang,JS Huang - 《Electric Machines & Power Systems》 被...
United States Patent US3287624 Note: If you have problems viewing the PDF, please make sure you have the latest version ofAdobe Acrobat. Back to full text
The algorithm is developed for voltage level control with on load tap changer operation. Normally the tap changer operation is done manually nowadays but the main purpose of this work is to introduce the automatic operation of tap changer.Sneh T. Gohil...
Voltage stability of a power system is related to load characteristics and voltage control devices such as on-load tap-changing (OLTC) transformers. This p... CS Chang,JS Huang - 《Electric Power Systems Research》 被引量: 13发表: 1997年 Three-phase auto transformer with two tap changers ...
By using the ideal rectifier or inverter no load direct voltage as the reference the frequency of operation of the onload tap changer of the converter transformer can be reduced and its useful life thus prolonged. Also a more uniform operation of the converter results. This reference is compared...
A Study on Integrated Performance of Tap-Changing Transformer and SVC in Association with Power System Voltage Stability 来自 waset.org 喜欢 0 阅读量: 33 作者:MR Shakarami,R Sedaghati 摘要: Electricity market activities and a growing demand for electricity have led to heavily stressed power ...
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 sy...
Virtual energy storage for frequency and voltage control Results showed that the voltage control scheme made a significant improvement in the voltage and reduced tap changing actions of the on-load tap changing transformer and the voltage regulator by approximately 30 % compared with the base ... ...