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A kind of main/auxiliary type wide-area backup protection fault location algorithm is proposed to improve the performance of the protection system. The “main” is through strict mathematical calculation to accurately locate the fault location, and the “auxiliary” is using the basic knowledge of power system to predict the fault interval. The “main” and the “auxiliary” run simultaneously. The interval...
This paper has built a new evaluation approach (called SQ-Atten) based on summary and comparative study of the four traditional service quality assessment instruments. SQ-Atten has a new term attention, which has similar function with zone of tolerance (ZOT). It can analyze the users' satisfaction using the score of attention and performance, and has less difficult than that of ZOT in collecting data...
Teaching-Aided Website (TAW) is a complex social technical system. As a result, the evaluation on TAW's service quality (SQ) is a complicated social process. The paper analyzes the characteristics of college TAW. Then it designs the evaluation index system and approach for measuring the Website's SQ. AT last, it gives the process and result of the case study on a college TAW. The data indicate that...
In order to enhance the magnetic drive system reliability under the condition of large gap and high speed, the large gap magnetic drive technology, which is driven by traveling wave magnetic field, is studied. By analyzing the motion state between the initiative magnetic pole (electromagnet) and the driven magnetic pole (permanent magnet), this paper determines the relationship between the switch...
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