• AMOL ANKUSHRAO KALE
• N. J. Phadkule

The mandatory requirements for constructing new transmission line such as land acquisition, Rehabilitation and Resettlement, Rights of Way and Compensation, Environmental Problems Due to Design. Alternative for that upgrade low efficient existing transmission or construct new lines with minimum impact on mandatory factors. The objective of injection of third harmonic voltage in transmission lines to reduced peak amplitude of phase voltages. In this proposed method, 13.4 % of peak amplitude of phase voltage is reduced by injecting third harmonic voltage in fundamental component of phase voltage and line to line voltage remains intact. The third harmonic voltage could be injected through line or neutral of transformer. Injected third harmonic voltage does not affect or generation or load side. In this method impact of third harmonic voltage only in phase voltage And does not affected on line to line voltage. With this approach, the existing transmission line can be upgraded by increasing voltage level. In proposed method required less ground clearance compared to practical transmission lines by injecting third harmonic. Furthermore, the capital investment of new construction transmission line could be reduced by shorter length of tower. The loadability of existing transmission lines can be increased, if clearance of new phase to phase is met. In this paper, operation of a power transmission line with injected third harmonic voltage and practical consideration for its implementation is studied.

power transmission, third harmonic voltage, ground clearance, line upgrading, and line loadability.

"Operation of a Power Transmission Line with Injected Third Harmonic Voltage ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.534-546, April-2019, Available :http://www.jetir.org/papers/JETIR1904P83.pdf

"Operation of a Power Transmission Line with Injected Third Harmonic Voltage ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp534-546, April-2019, Available at : http://www.jetir.org/papers/JETIR1904P83.pdf