In order to further improve the operation reliability of substation site equipment, abnormal sound online monitoring and positioning system for substation equipment was designed. This system consists of on-site monitoring unit, system server and client three parts. Three key technologies were researched and developed: substation abnormal sound automatic identification technology, substation abnormal sound video positioning technology and substation abnormal sound message warning system technology. Abnormal sound online monitoring and positioning system for substation equipment has reasonable structure and good results.

Principle of vernier caliper is a reference of the working principle of high voltage cable head positioner for scribing and cutting (HVCHPSC), considering the HVCHPSC is suitable for 35kV and below grade high voltage cable termination, the desired measurement range and position is 0-600mm and the measurement accuracy is 0.1mm of HVCHPSC are determined. According to the characteristics of production and installation process during 35kV and lower grade high voltage cable termination, identified the desired number of vernier on HVCHPSC is six, the required measuring span is 20mm. Designed and produced HVCHPSC, mainly constructed of a set of main scale and six sets of deputy ruler, each of which have a snap ring structure match with high voltage cable. Tests proved that the tool is easy to use, precise in positioning, well in performance.

TGZ10A-40.5 wall bushing of high voltage switch cabinet from one company was taken as applied research object. Reference the development process of high voltage cable shielding technology, three samples were designed and produced depending on different sets of the shield system. The result show that: surfaces processed by the way that the inner (aluminum cylinder) and the outer (metal mesh ring) shielding components were coated with a semi-conductive material, made little sense to improve the withstand voltage level and reduce the partial discharge; surface processed by the way that inner shield component (aluminum cylinder) was coated with semi-conductive material, the outer shield component (metal mesh ring) was not coated with semi-conductive material, was obviously influenced the improvement of the withstand voltage level and reduction of the partial discharge, compared with traditional technology, the average start voltage of corona increased 23.8%, the average value of partial discharge dropped 27.7%.

Most of research on formation mechanism of black silicon stays in the stage of experimental analysis. Consequently, it is quite difficult to perceive the mechanism of its formation process theoretically. In this paper, Quantum Mechanics is involved in our research on mechanism of how black silicon is formed in the fabrication process based on DRIE. Satisfying result is obtained through our simulation: Pillar structures with spacing raging from 500nm to 550nm can be formed when there exist particles with single momentum size in emulated experiment environment; With further efforts, more complicated pillar structures are obtained assuming that there exist particles with two sizes of momentum. By comparing with SEM image of black silicon, the simulated pillar structures are quite similar with real black silicon in both spacing and height distribution.