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The vibration signals generated by the transmission and impact of circuit breaker mechanical components have chaotic characteristics and using conventional signal processing method is difficult to distinguish the abnormal operation process quickly and accurately. Based on the mutual information method and the Cao algorithm, the delay time and the embedding dimension of the phase space reconstruction parameters are calculated and optimized according to the chaotic characteristics of the vibration signals. The singular value order energy (SVOE) and the singular value energy entropy (SVEE) are obtained by decomposing the phase space reconstruction matrix, which is determined by the optimal phase space reconstruction parameters, and the support vector machines (SVM) are used to identify the states of the circuit breaker in operation. The experimental results show that the combination phase space reconstruction and singular value decomposition (PSR-SVD) can accurately extract the characteristics of the vibration signal of the circuit breaker, and the genetic algorithm (GA)-improved SVM can quickly and effectively identify the circuit breaker defect types, which solves the problems of path distortions, energy leaks, modal aliasing, and lack of samples in existing diagnostic methods.

Modern educational technologies have been playing an important role in “blue-collar talent” staff quality education and training project in Xiasha Economic and Technological Development Zone of Hangzhou. The theoretical part of this article has explored the features and connections between the educational technologies and instructional system design in the “blue-collar talent” project, and has proposed the employee training model in this development zone according to the constructivism-based instructional system design theory. For this case, this article has made an in-depth analysis on the educational resources and performance evaluation in employee training in the development zone, and has also put forward the corresponding suggestions in accordance with the theme of educational technology in the “blue-collar talent” project.

Based on the practice of the landscape sketch bamboo buildings of Meixi Lake in Changsha, this thesis, from the perspective of material construction, aims to perceive the region and bamboo structure, to concern the bamboo frame form and space construction, to try to integrate bamboo structure with other materials and to explore the formation of bamboo-framed building and the related regional expression. Excavating bamboo value, improving bamboo performance and developing bamboo structural building can satisfy requirements as the main part of construction and expression in architecture and promote the using level of GluBam. Technological innovation such as suitable construction skills and reasonable structural system can promote the effective utilizing bamboo and development of modern bamboo structure. It is a alternative green building system for sustainable development.

In order to reduce investment and maintenance cost, the optimal sizing of distributed energy in AC/DC hybrid stand-alone micro-grid is studied in this paper. The optimization model is built and economics, power supply reliability and environmental protection are taken into account. By means of the modified artificial bee colony algorithm, the optimal sizing method is obtained. Finally, the feasibility of method is verified by calculating example analysis. By comparing the optimal sizing results of three different micro-grid configurations, hybrid AC/DC micro-grid is proved to be superior to traditional micro-grid. Furthermore, the modified ABC is more suitable for solving optimization problems because of the higher convergence precision. AC/DC hybrid stand-alone micro-grid system System configuration of AC/DC hybrid stand-alone micro-grid. In this paper, the system configuration of AC/DC hybrid stand-alone micro-grid is shown in Fig.1. It consists of three parts: AC subgrid, DC subgrid and storage battery system. There are four kinds of distributed energy: WT, PV, storage batteries and diesel generators. Storage batteries are connected to DC bus.