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In this paper, familiar means of energy storage are compared with respect to both performance and cost, on the basis of which some general rules are discussed on how to select proper energy storage means. Based on integrative analysis of capacity-fluctuation's impact on system and customers, some technical requirements of energy storage capacity configuration are determined. Proper capacity proportion...
It is difficult to find a reasonable and accepted index to evaluate the comprehensive level of power quality because of the great difference in characteristics and effects among all the individual problems. A new evaluation method is proposed which responses to what the customers care, based on the economical considerations. Example is given to show the advantages of the proposed method, including...
After analyzing typical structure of microgrids with distributed energy sources, a new idea of microgrid based on "DC energy pool" is proposed in the paper, whose energy exchanging process is also discussed. The new idea lays stress on the skillfully control of energy stored in the energy-storage device. Since the power balance within the microgrid is realized in a way with the help of distributed...
Remarkable increase of agricultural load due to concentrative irrigation arrangement will consume a large amount of energy and impact the operation of power system. Traditional waterwheels require wind and water being together and can only deal with surface water, as will be unpractical in many areas. An irrigation system applying wind power generation is proposed. Wind energy is converted to electric...
Overall understanding on the nature and characteristics of the harmonics penetration between different voltage levels is necessary and significative. Factors affecting harmonic penetration are checked in the paper. After comprehensive analysis considering more than one factor simultaneously with the help of 3-dimension mesh plots, the distribution characteristics of with respect to key factors in...
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