| Vacuum circuit breaker in the power system has important position,the online monitoring of its insulation has a lot of necessity and practical to the stable operation of the power system. The article do the following job and obtained the corresponding results on its monitoring:(1) Firstly, according to the important position of vacuum circuit breaker in the power system, detailed introduces the present several common monitoring theory, do the prepare for the next study.(2)In the hardware, in accordance with the requirements of Hang Zhou power station, using hierarchical and distributed fieldbus structure, choose the temperature, humidity and current sensor, design of distributed signal acquisition system, realized the parameter setting, the interference, using the method of realization of hardware and software of the system to improve the anti-interference ability, and have achieved good effect.(3) In the software,using DELPHI7developed data management system function module,adopt the background of the SQLserver2000database of Microsoft, built substations needed data management made the data table, the ADOconnection component realized the function module and the backend database connections, the ADOquery component implementation of database insert, and delete, modify operation, in the realization of the system function, but also give consideration to the system friendly man-machine interface,realized easy operation of humanized design. At the same time, through the analysis the diagnosis system, from horizontal or vertical two aspects,analyse the history data of the collection, and concludes that the vacuum circuit breaker operation state diagnosis, and timely feedback to operation management personnel, realize the online monitoring function. |
