Power up-gradation of existing EHV AC lines using transformer bank configuration by composite AC/DC transmission

Vivek Kumar, H Kumar

Abstract


Over the years, rising electricity demand, costly power transmission infrastructure, and technology innovation have urged concerned stakeholders towards the recently proposed concept of simultaneous ac-dc power transmission that enables the long Extra High Voltage (EHV) ac lines to be loaded close to their thermal limits. The conductors are allowed to carry a certain amount of dc current superimposed on the usual ac. This paper presents a novel power up-gradation technique of the existing HVAC line corridor by using a set of single-phase transformers as bank, for converting lines into the composite ac-dc power transmission line. There is no need for alteration in conductors, insulator strings, or towers of the original line. Also, there are great advantages of using a transformer bank. The Simulation study is carried on Multisim 11.0 (NI’s software package) and the results are practically verified on the HAN2013 kit

Keywords


Power Upgrading, EHVAC Corridor, transformer bank, Simultaneous AC-DC Transmission.

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References


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