A measurement system for very fast transients in GIS power substations

In order to acquire the very fast transients during the disconnector operations in GIS (gas insulated switchgear, GIS) of power substation, a novel measurement system is developed and tested. By using the high speed digitizer as an alternative of the oscilloscope with other auxiliary device, the system is an effective approach to acquire the characteristics of the disturbance voltage of VFTs, including the frequency domain and the time domain features. Several kinds of experiments are carried out in the lab and GIS substation. The results show the good performance of this measurement system

Online promotion format selection for a supply chain with environment responsibility in an uncertain market

Corporate environmental responsibility has received considerable attention. In our study, we consider a supply chain in which a manufacturer invests in green technology to decrease the carbon footprint. The main issue addressed here is how the manufacturer selects the optimal online selling format between agency selling and reselling to ensure profitability with a lower carbon footprint. In an uncertain market with considering different pricing sequences in dual-channel promotion,we explore six scenarios. The results show that the different pricing sequences will not affect the equilibrium green degree and pricing strategies under agency selling, whereas it may result in an improved greenness in reselling format. Furthermore, under the interaction of uncertain demand, pricing sequence and green technology investment, we reveal the agent selling format is not always superior to the reselling format with a double-marginalization effect, which contrary to the general intuition. Specifically, in an optimistic market, the manufacturer is more profitable in reselling format when the promotion price set in online channel prior to traditional channel, and in a pessimistic market, the opposite pricing sequence formulated will bring a considerable benefit to the manufacturer

A novel computing architect in ubiquitous electric IoT

The Internet of things (IOT) has attracted great interest in many applications related to the monitoring and control of physical phenomena. The rapid popularity of Internet of things (IOT) equipment has brought unprecedented pressure to data communication and processing on communication network and central cloud infrastructure. Edge computing, as a potential platform to address such challenges, is facing significant challenges from the tension between resource constrained hardware and low latency applications. In this work, we propose a technical framework to meet the challenges. We suggest that computing and communication resources should be sliced horizontally to form a virtual computing platform to solve the problem of resource shortage