Attending small loads along a half-wavelength transmission line

Abstract

This paper presents some results on a Transmission Line a little greater than the Half-Wavelength (HWL+) attending small loads. A non-conventional 800 kV line with 2600 km with natural power of 4.8 GW was analyzed. The studies consisted in analyzing the capacity of this AC-Link feeding some small loads. The results confirm that this transmission is rather robust and can operate with small load drainage along its length.Index Terms-Long distance transmission line, halfwavelength, small loads feeding.

Technical and economic comparison between direct current and half‐wavelength transmission systems for very long distances

“…As a result, reliable operating schemes as well as the technical and economical parameters of HWL were designed. Furthermore, the performance of HWL was corroborated with the field tests in the 500 kV Russian Grid [2,11].…”

“…Nowadays ultra-high voltage (UHV) AC TSs of 1000 and 1150 kV have been brought to commercial level [12,18]. The operation of 1150 kV UHV interconnection Ekibastuz-Kokchetav-Kustanai began in 1985 [11]. However, after 5 years the operation was interrupted due to the disintegration of the former Soviet Union.…”

New perspectives about AC link based on half‐wavelength properties for bulk power transmission with flexible distance

“…However, from (5) it is observed that M HWL+ is a matrix with equal elements on main diagonal. Observing (6)- (11) only the matrices of T and PI banks have this characteristic, so only they can properly reproduce the HWL+ properties. Series and L banks are discarded for HWL+ tuning purpose.…”

“…This alternative does not require intermediate substations (it is a point-to-point transmission) and the higher the line length the lower the reactive compensation required to achieve HWL properties. Also small loads between 100 and 200 MW can be drained along the line without compromising the HWL properties [11] and studies about multi-terminal operation are under development with promising results [12,13].…”

Linha de transmissão de pouco mais de meio comprimento de onda com multiterminais na recepção

“…Análises aprofundadas a respeito das mais amplas possibilidades de condições operativas, bem como faltas passíveis de ocorrer durante os testes, foram realizadas no âmbito do projeto de Pesquisa e Desenvolvimento advindo de [12]. Em 2011, a validade de se utilizar as interligações supracitadas, de parâmetros semelhantes, a fim de se representar a manobra de energização de uma linha de meia onda, foi comprovada a partir dos resultados apresentados em [27] e [28]. Os autores concluíram que a representação permanece válida para linhas com diferença de até 5 % entre suas respectivas impedâncias características de sequência positiva.…”