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The manufacturing enterprises are currently under great pressures to shorten innovation cycles, grow importance of high-efficiency manufacturing and accommodate new products by building more factories. Discrete manufacturing sectors face a huge array of problems because of its specificity. Knowledge representation is one of the most highlighted troubles. In this case, ontology is a significant knowledge...
Reliability of mobile cloud computing system (MCS) components substitution is an important issue for troubleshooting and system upgrading. In this paper, MCS components substitution is equated to MCS service substitution based on a service-oriented architecture of MCS. Then, a reliable workflow for MCS service substitution is proposed, which consists of two parts. One is a qualitative judgment method...
Fatigue and destruction in the shafts of a wind turbine caused by sub-synchronous oscillations during power system faults is critical for wind turbine reliability. This paper investigates a three-mass shaft model according to a MW class doubly-fed wind generator shaft mechanical structure and obtains the electromagnetic torque of a wind turbine by PSCAD simulation when sub-synchronous oscillation...
In order to reduce greenhouse gas emission and fossil fuel dependence, Electric Vehicle (EV) has drawn increasing attention due to its zero emission and high efficiency. However, new problems such as range anxiety, long charging duration and high charging power may threaten the safe and efficient operation of both traffic and power systems. This paper proposes a probabilistic approach to model the...
This paper focusses on studying the changes brought about in the aggregated probabilistic representation of a distribution network containing distributed generation and local loads after the incorporation of Energy Storage Devices (ESD) into the said network. A stochastic model of the ESD is first constructed using a suitable charging/discharging strategy, and it is then combined with information...
Conditional neuromodulation is a form of closed-loop bladder control where neurostimulation is applied in reaction to bladder pressure changes. Current methods based on external catheters have limited utility for chronic ambulatory therapy. We have developed a wireless pressure monitor to provide real-time, catheter-free detection of bladder contractions. The device is sized for chronic implantation...
Energy storages (ESs) are widely used in DC distribution system to compensate power imbalance. Hybrid energy storage system (HESS), which combines various ESs, can optimize energy density, power density and dynamic response. Hierarchical control of HESS is shown able to achieve dynamic power sharing among ESs with improved system reliability. However, system stability of HESS under hierarchical control,...
This paper presents a distributed control scheme for reliable autonomous operation of a hybrid three-port ac/dc/distributed storage (ds) microgrid by means of power sharing in individual network, power exchange between ac and dc networks, and power management among three networks. The proposed distributed control scheme includes: 1) a fully decentralized control, which is achieved by local power sharing...
Femtocell networks have emerged as a key technology in residential, office building or hotspot deployments that can significantly improve the coverage and performance of next-generation wireless networks. But, in the co-channel deployment scenarios, dense inter-femto interference might significantly deteriorate the overall system performance. In this paper, a new adaptive soft frequency reuse scheme...
In order to improve the risk communication and emergency disposal capacity of trans-boundary water pollutions, a river basin risk communication model has been developed based on Multi-Agent, combined with WebGIS technology, which coordinate the relationship among government departments, the related enterprises and the general public. By the cooperation of the distributed agents, the risk information...
At present, the adjustment of train operation plans is undertaken generally before a comparatively long planning horizon such as 3 hours by the dispatchers via the workstation of train scheduling, which can not meet the requirements of optimization and real-time processing in the networked operation with medium- and high-speed trains. This paper establishes the generalized formal description for train...
In this paper, it has established a city gas network resisting engineering geological hazard damage early warning and decision support system. The purpose of building this system is to supply model support, technical support and decision support to carry on early warning of engineering geological hazard damage to city gas network, anti-disaster capacity assessment and preventive measures and emergency...
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