碩士 / 和春技術學院 / 電機工程研究所 / 96 / Based on the power conservation theory for the any circuit the algebraic summation of active power or reactive power is equal to zero. In this thesis covers two major parts: One for power distribution feeders based on line segment loadings switching operation. Two for the open sea fishing boat freezers reactive power compensation.
In first part, the flow parameter using the line segments loadings composition and integrated the switching operation to vary the feeder and line segment power factor. To find the optimal switching operation and the compensative value of the distribution feeders by using the differential of multi-variables method. Base on the operation mode discrimination is four small parts. One is only for the optimal switching operation. Two is only for the reactive power compensation for the most influence line segment. Three is the optimal switching operation then reactive power compensation for the most influence line segment. Four is reactive power compensation for the most influence line segment then the optimal switching operation. The second part is aimed to the open sea of fishing boat freezer with the different loading to investigate the optimal reactive power compensation strategy.
With the energy conservation theory, to infer the biggest influence of the each line segment of feeders and whole feeder power factor summation by each line segment to get the most power factor improve. In general, to improve the biggest influence line segment power factor to 0.95，the average power factor improved rate of small distribution system in a day is 7.5%. With the open sea of fishing boat freezer in view of the reactive power compensation, according to its load shape its best reactive power compensation value. After the compensation, its current descending rate to be bigger than above 9.6%. By using the above method will only have along to it compensation, might extremely effective also the fast decision the reactive power compensation point and the compensation quantity.
| Identifer | oai:union.ndltd.org:TW/095FIT00442020 |
| Date | January 2008 |
| Creators | Wei-Cheng Dai, 戴威成 |
| Contributors | Yen-Ming Tzeng, 曾燕明 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 119 |
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