Studies On Distributed On-line Supervision System Of Capacitive Equipment's Insulation And Algorithmic Routine Of Dissipation Factor

Recently, with the development of the domestic electric power system and interlink of area electric power system, the scale of electric power system expanding greatly. Thus, higher-level supervision technologies are required for the on-line supervision. Aiming at on-line supervision of capacitive equipment's insulation, this paper proposes studies of distributed on-line supervision system of capacitive equipment and algorithmic routine of dissipation factor. According to the requirement of on-line insulating supervision of capacitive equipment, the paper taking "arithmetic of dissipation factor-design of on-line supervision system-design of system reliability" as researching object, studying on-line insulating supervision system of capacitive equipment deeply, doing lots of work on algorithmic theory of dissipation factor, analyzing on framework of supervision system, analyzing on function of system module, supervision system hardware design, supervision system software design, supervision system reliability design. Developing a set of on-line insulating supervision system of capacitive equipment, which based on reducing noisy by wavelet, correlation function algorithmic routine and distributed system frame in three layer.Firstly, comparing older algorithmic routine and finding out its merits or defects, then bring forward correlation function algorithmic routine which reducing noisy by wavelet of dissipation factor. Eventually, the paper concluded that correlation function algorithmic routine is more precise than resonance wave analyzing algorithmic routine to calculate dissipation factor by emulator.Secondly, the paper adopting distributed system project of many-MCU and multilayer. Separating whole system into three layer which are frontage wave data collecting device, master controlling device and industrial computer. Expatiating on hardware designing of three layer particularly , and paper showing hardware frame diagrams of each modules and electrocircuit schematics; Introducing software structure layout and each module's function, communication protocol of fieldbus and how to implement all software modules. Also recommending how to program by the correlation function algorithmic routine which reduced noisy by wavelet.Finally, analyzing the reason of interferential sources under system working circumstance, and illuminating the reliability of on-line supervision system in both hardware and software. Experiment result of system testing-run showing that on-line insulating supervision system of capacitive equipment, which based on reducing noisy by wavelet, correlation function algorithmic routine and distributed system frame in three layer, can satisfy the requirement of on-line supervising on capacitive equipment.