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Maintenance strategy impacts the reliability of distribution network directly. Common distribution network maintenance strategies contain corrective maintenance and preventive maintenance. However, the existing reliability assessment methods ignore the effects of preventive maintenance. This study showed the influence of preventive maintenance on the system failure rate by describing the preventive...
The load identification of the shield machine is presented in this paper by introducing the mechanical analysis of shield excavating into the nonlinear multiple regression of on-site data. The analysis on mechanical characteristics of shield-soil system can decouple the nonlinear multi-parameter problem of load, so it is great helpful for the regression process to establish a load model. Then a load...
Combat mission of battle plane is usually executed by plane fleet as a unit. Plane fleet can be divided into several team formations. Battle planes in different formations have different flight profiles, and cooperate with each other. The load conditions varied under different flight profiles. According to the influence of load conditions on battle plane's reliability, the flight profile conversion...
This paper presents a band-stop tunable filter (BSF) within frequency ranges of 7-13.5GHz and it shows good stop rejection and sharp roll off frequency. It used a novel design to turn the resonant frequency by microelectromechanical systems (MEMS) switch and coplanar-waveguide (CPW) structures. The DC voltage is utilized to load RF-MEMS switch as source of the tunable cell's power. This paper also...
In this paper we focus on the electric power load in Beijing during this great Olympics to analyze their dynamic fluctuation and find the relationships between electric and other factors (i.e. the highest temperatures). The ARMA process is used here to illustrate the series trends and do the next day's prediction. We also do some research on the effect of the highest temperature to the electric power...
Based on data collected previously on the electricity market of the East China, we use stepwise regression method to find the approximate expression of the active power flow of each power sets on East Chinapsilas certain electrical network. Then classified discussion is carried out according to the difference of the capacity in and out of merit in order to obtain a simple and reasonable rule for calculating...
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