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Inter-turn short circuit faults are the most common stator winding faults in permanent magnet wind generators. Their early detection is vital to avoid subsequent damages which can led to catastrophic machine failures. To accomplish this task stator current signature analysis has been recently proposed for identifying inter-turn faults via a non-invasive, non-destructive and cost effective approach...
Aim of the present paper is to propose a framework for the choice of the opportunistic maintenance models for applications in real contexts. The paper explores firstly the scientific literature on opportunistic maintenance in order to obtain a multi-criteria classification of the main existing models. This allowed us to devise a methodological map for the selection and the choice of the opportunistic...
With the rapid development of information technology, it is inevitable that the distributed mobile computing will evolve to pervasive computing gradually whose final goal is fusing the information space composed of computers with the physical space in which the people are working and living in. However, most of WSN contexts coming from may be more and more unstructed, widespread and massive. Therefore,...
in high-voltage substations, poor contacts at the junctions of contacts can generate heat leading to high temperature, arc and fire disaster in serious condition. In this paper, we present a remote temperature monitor system to monitor and alarm when temperature of the contacts increases. The system measures temperature by sensor node based on low power consuming temperature sensor and Zigbee communication...
In order to optimize the performance of the steam turbine unit performance monitoring system, improve the reliability, stability and accuracy of the system, a new idea to establish target value surface and coal consumption growth surface in different load is presented. Take an imported supercritical steam turbine unit, which capacity is 600 MW, as an example to expound the design idea, the mathematic...
The policy-oriented nature ofBGP provides network operators with great flexibility and control over the interdomain routing, nevertheless researchers showed that these benefits come at the cost of stability and predictability. In particular, policy interactions often separate, both in time and space, the effects of network events from their causes, making it hard to assess and debug network configurations...
Either as a significant augmentation of GPS system, or as an independent system for indoor positioning, pseudolites augmenting GPS technique has become an exciting technology whose potential can be explored for a wide range of positioning and navigation application. Indoor positioning using multiple pseudolites signals, however, comes up against a number of obstacles, and there are some challenging...
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