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As a response to economic growth, electric power utilities installed many electric power facilities to meet power demand. However, these facilities have aged and should be replaced in the near future. Moreover, after the Great East Japan Earthquake, significant power flow changes in power system would likely to happen. Therefore, for electric power facilities planning, it is necessary to solve such...
This paper assumes significant amount of protracted local loss of the generation capability (approximately 20% of the total capacity), and examines the resulting load changes in the loop system, which likely result in creating considerable power flow differences in such a system. We then propose the use of phase shifting transformers (PSTs) to alleviate load differences among transmission lines, allowing...
In some loop systems, there is a possibility of considerable power flow differences between heavy and light loads. Significant changes in the power system, such as from damage due to a natural disaster, would likely result in even larger differences. This paper examines changes in loop system load after significant loss of generation generating capacity, and proposes use of phase shifting transformers...
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