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排序方式: 共有199条查询结果,搜索用时 31 毫秒
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This paper introduces and compares four algorithms by which reconfiguration for restoration of an arbitrary number of interdependent critical infrastructure systems can be achieved. A method of modeling systems called Graph Trace Analysis is used to enable generic operation on various system types. The algorithms described are compared with each other and with prior work when run on a model of an actual electrical distribution system. The described algorithms are also run on an example model to demonstrate the ability to reconfigure interdependent infrastructure systems. 相似文献
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The common view is that major transitions come about through breakthroughs of technological discontinuities. This article proposes gradual and stepwise reconfiguration as an alternative transition pathway. In it, new elements are adopted in the existing socio-technical regime to help solve particular problems. But as more is learned and circumstances change, these elements may trigger further changes in technology, user practice, infrastructure, and policies, eventually altering the basic architecture of the regime. These notions are integrated in a multi-level perspective on transitions and system changes. The resulting reconfiguration perspective is illustrated with a historical case study of the transition from traditional factories to mass production in America (1850–1930). The analysis shows that mass production was the last step in a much longer reconfiguration process involving cumulative changes in machine tools, building materials, materials handling technologies, power generation, and power-distribution technologies. The reconfiguration perspective has wider relevance for other systems that function through the interplay of multiple technologies, e.g., agriculture, retailing, and hospitals. 相似文献
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This paper applies a new dynamical electrical array reconfiguration strategy on photovoltaic (PV) panels arrangement based on the connection of all PV panels on two parallel groups to reach the 24 V requested by the considered load and providing a maximum output current by connecting in series the two groups. If one of the PV panels or more are shaded, dusty or faulty the connection of the others in the same group will be automatically modified to maintain the requested load output voltage. This dynamical reconfiguration allows also limiting the lost power, due to the incriminate panel, by switching off this panels and reconfiguration the topology. As a result, a real time adaptation of a switch matrix allows a self-ability to maintain a constant load voltage. Moreover, a minimum number of PV panels are switched off by isolating the effect of unhealthy panels. In addition, the proposed solution can also be applied for identifying and locating the shaded, dusty and faulty panel. Experimental setup has been built and the results validate the proposed method. 相似文献
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This paper suggests a method based on stochastic multi-objective modelling for optimally siting and sizing of distributed generations and capacitors and simultaneously network reconfiguration, in order to take more advantages of recent developed technologies. With respect to the widespread effect of uncertainties of load forecasting and market price, some strategies must be devised so as to well incorporate them into the problem. The mentioned problem can be regarded as a multi-objective optimisation problem for which NSGA-II accompanied by fuzzy set theory are chosen. The main aim of DisCo is to provide highly reliable power at the lowest possible costs. Besides, voltage deviation and voltage stability as the criteria of power quality in distribution networks and emission pollutant reduction are treated as independent objective functions. Eventually, to validate the effectiveness of the proposed scheme, simulations are carried out and the results are compared to the initial configuration. 相似文献
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Scott Olsen James Wang Alejandro Ramirez-Serrano Robert W. Brennan 《Robotics and Computer》2005,21(4-5):379-390
In this paper, we describe our experience using a Java-based platform to implement an emerging real-time distributed control model (IEC 61499). We provide a simple example of a control application that is distributed across two devices (Dallas Semiconductor TINI boards) and also investigate how this distributed implementation can be exploited to enhance the system's fault tolerance using a contingencies-based approach to reconfiguration. 相似文献
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