Study On Remote Power Quality Calibration Equipment Management System Applicable For Multi-Modes Communications

At the present time, power quality calibration adopts the method of spot calibration. This method wastes large amount of time, and the working efficiency is low. There are some hidden troubles of security during the way to the calibration locale and the period of preparing for calibration. And there are some man-made data reliability problems. Aiming at such problems, this thesis brings forward the idea of setting up a remote power quality calibration system for the first time. This system consists of three parts: the server program, the client program and the data collection card based on the PCI bus. This thesis accomplished the part one and the part two. The whole system is developed under the Visual C++ developer, using the Cjlib class lib as the base interface class. The system has such functions as followed: firstly, it could provide the whole function of drawing and editing the power component blueprint of the transformer substation. Secondly, using the multi-thread and the thread pool technique to realize the function of communicating with several transformer substations by different communication modes (the telephone dial-up mode, the data net directly linked mode). And the system also has the function to analyse and manage the data of the ammeters. Using this system, the worker can remote control and supervise any ammeter of the area without going to the locale. Surely, this system will in favor of the automation in the power system.