Transformer Shelf Depreciation Examination SYSTEM Communication Connection Development

The insulated state is one of the most important problems of large power transformer safely running in power system. The most efficient method in monitoring the running transformer's insulated state is to extract partial discharge signals in real-time. In this paper, the essentiality of developing online partial discharge monitoring, the actuality and develop trend in home and abroad are discussed. In order to solve the problem in online monitoring system, a high effective detection PD circuit is designed, at the same time, wavelet transform and DSP technology are applied to improve capability in real-time process. This topic is studies this system the communication connection development.This article mainly is and withdraws after through the programming grealization to the shelf depreciation signal filter the signal communication to transmit PC machine. It is one kind based on DSP and the USB2.0 connection high speed data gathering processing system principle of work, the design and the realization. This high speed data gathering processing system uses TI Corporation the TMS320VG5402 digital signal processor and Cypress Corporation's USB2.0 connection chip.First, carries on the USB system the outline and the system structure analysis. Again carries on the principle analysis and component selection USB2.0 connection, according to is actual needs to carry on the component selection. Again will choose the hardware will carry on the hardware connection, through will study various hardware the principle, the determination connection preferred plan. Finally carries on the USB software design, has the quite big work load is about the USB software development, mainly includes the firmware programming, the driver design and the main engine end application programming. Through enumerates, the programming description, the procedure frame, process and so on procedure showing, finally has realized the driver design.