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The following topics were dealt with: energy developments; HVAC; HVDC; power market modeling; power network reliability; power supply quality; alternative energy sources; long distance power transmission; regional electricity markets; FACTS; power system protection; electromagnetic effects power engineering education and computational intelligence
The Westcor project is intended to exploit the environmentally friendly, renewable, hydroelectric energy of the Inga rapids site in the Democratic Republic of Congo (DRC). First pass studies show that HVAC is inadequate and that conventional HVDC at 500 kV is acceptable for low loads over the long distance. For higher loads, it will be required to increase the operating voltage. First pass studies...
Africa has 15% of the world's land area, 13% of the world's population, uses approximately 3% of the world's electricity but accounts for only 2% of the global industrial capacity. With an installed generation capacity of approximately 105000 MW, Africa has a relatively small power infrastructure in comparison with its geographic size and population. This paper sets out to achieve the following: identify...
Distributed generation as well as a growing share in stochastic energy sources will lead to deep changes in electricity transmission & distribution (T&D). In the vision of future energy networks project, these changes are investigated by means of a greenfield study. New concepts and analysis methods shall be used to design an optimal energy system regardless of its actual structure. This paper...
The role of new and renewable energy (NRE) sources is increasing rapidly, and probably this trend will continue in the medium and long term. The main purpose of this paper is to investigate the possible evolution of the energy for electricity generation from renewable resources in the APEC region for the period 2005-2050. Scenario projections are obtained by using specific econometric models which...
This paper outlines a method for modulating direct current in such a way as to distribute power equally among three rather than two conductors., thus making it particularly adaptable to conversion of long AC lines to HVDC. Those principles and the resulting operating characteristics of "tripole" HVDC are then discussed as they relate to converter station design, construction and operation...
This paper describes the transmission lines that have been built throughout the world to operate above 700 kV. The paper provides information on the system planning, the electrical design, the mechanical and tower design, and the operation and maintenance experience of lines built in the U.S., Canada, South Africa, Brazil, Venezuela, Russia, Korea, India and Japan. Also briefly discussed is the research...
The use of ultra high voltage direct current (UHVDC), i.e. voltages above the highest in use, 600 kV, has been found to be economically attractive for power blocks up to 6000 MW for distances above 1000 km, Furthermore the use of 800 kV as transmission voltage will be achievable within the near future with a limited amount of development work. None of the AC equipment, auxiliary equipment or control...
Conversion of one circuit of a double circuit 220 kV AC line into 100 kV, 100 MW, 6 pulse monopolar HVDC ground/metallic return while the other circuit of the same line remaining at 220 kV AC was planned in 1983, with a view to develop the in-house HVDC technology. Many options were discussed and finally concluded to go for 100 kV 100 MW, 6 pulse monopolar HVDC ground/metallic return. During the period...
Systems developers and service providers in utility markets with volatile regulatory compliance conditions due to deregulation, unbundling, privatization and partial re-regulation have over the years witnessed high replacement rates for whole information and communication technology (ICT) systems and low levels of satisfaction with return on investment figures. In this paper resulting deficits in...
Power sector deregulation is a global phenomena but driven locally by a mix of complex forces peculiar to each country. Using a case-study example, this paper evaluates distribution (embedded) generation as an option for developing economies to ensure system stability and improve reliability. A methodology for evaluating distributed generation (DG) services is proposed and a framework for integrating...
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