Analysis on environmental impact evaluation methods of 1000kV ultra high voltage alternating current transmission line pilot project

2017 ◽  
Author(s):  
Yana Duan ◽  
Haiming Xu ◽  
Guangwei Jiang ◽  
Panpan Wang ◽  
Yang Sun ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Transmission Line ◽  
High Voltage ◽  
Impact Evaluation ◽  
Pilot Project ◽  
Alternating Current ◽  
Evaluation Methods ◽  
Current Transmission ◽  
Environmental Impact Evaluation ◽  
Ultra High Voltage

scholarly journals PERFORMANCE OF HIGH VOLTAGE TRANSMISSION LINE BASED ON THYRISTOR-CONTROL SERIES COMPENSATOR

2021 ◽  
Vol 25 (5) ◽  
pp. 26-38
Author(s):  
Dunya Sh. Wais ◽  
◽  
Wafaa S. Majeed ◽  
Keyword(s):  
Transmission Line ◽  
High Voltage ◽  
Search Algorithm ◽  
Gravitational Search Algorithm ◽  
Alternating Current ◽  
Transmission System ◽  
Current Transmission ◽  
Gravitational Search ◽  
Flexible Alternating Current Transmission ◽  
Matlab Programming

This research aims to improve the steady-state performance of high-voltage power transmission lines, which is a significant challenge for the power system grid's safe and reliable operation. The research adopted Flexible Alternating Current Transmission System for electronic devices. The flexible alternating current transmission system technology will be used in this specific work as Thyristor-Controlled Series Compensators. Thyristor-controlled series compensator devices increase transmission systems' capacity and enhance the voltage profile by regulating transmission line reactance. Gravitational Search Algorithm is a meta-heuristic approach applied to find the optimum size and optimal location of thyristor-controlled series compensators in power systems. The gravitational search algorithm is used to solve the multi-objective and integrated optimum power flow problem in reactive energy management during normal and contingency operations. The results showed reduced voltage deviation, reduced active/reactive power losses, and increased transmission line reserves above thermal limits, in addition to reducing the installed cost and number of thyristor series compensators devices. The simulation part was created with MATLAB programming language and validated with MATPOWER software. Applied to IEEE 30 bus system and 400kV super high voltage grid system.

A Comparative Study of Ultra-Long Distance Transmission Technology

2013 ◽  
Vol 347-350 ◽  
pp. 1348-1352 ◽  
Author(s):  
Yu Gao ◽  
Jun Wen ◽  
Jia Liang Wen ◽  
Jing Wu ◽  
Xiao Xia Liu ◽  
...  
Keyword(s):  
High Voltage ◽  
Direct Current ◽  
Wave Length ◽  
Alternating Current ◽  
Long Distance ◽  
High Voltage Direct Current ◽  
Long Distance Transmission ◽  
Half Wave ◽  
Current Transmission ◽  
Ultra High Voltage

Therere two main methods for ultra-long distance transmission: half-wave length alternating current transmission and ultra high voltage direct current transmission. Its described in this paper that the working principle, and operational performance of both technology. In addition a comparison is made in areas of technology and performance including transmission capacity, reactive power compensation, stability and over-voltage. The parameters from the running project and theoretical prediction is used to make an economical comparison among the 1000kV half-wave length alternating current transmission and ±1000kV, ±800kV ultra high voltage direct current transmission.

Economic and environmental impact evaluation of various biomass feedstock for bioethanol production and correlations to lignocellulosic composition

2019 ◽  
Vol 7 ◽  
pp. 100230 ◽  
Author(s):  
Jhuma Sadhukhan ◽  
Elias Martinez-Hernandez ◽  
Myriam A. Amezcua-Allieri ◽  
Jorge Aburto ◽  
J. Amador Honorato S
Keyword(s):  
Environmental Impact ◽  
Impact Evaluation ◽  
Biomass Feedstock ◽  
Bioethanol Production ◽  
Environmental Impact Evaluation
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