The Smart Grid UHF Partial Discharge Monitoring System Research

Construction of the smart grid is a arduous historic project,as the real-time monitoring of the key parameters,partial discharge monitoring and research occupies a large market.Through practical investigation and research,both at home and abroad using UHF method to detect the smart grid power equipment work mostly in the laboratory,the scene to carry out less,and the development of the detection system of key equipment for spectrum analyzer,not only expensive but also not suitable for long-term operation at the scene.For the partial discharge in the process of the smart grid construction and operation maintenance problems,this paper designed a set of portable and practical monitoring system,UHF bureau on line monitor,it through to the traditional industrial structure innovation,through the inverter,under the dual orthogonal dual-channel high-speed AD technologies such as application,in order to achieve the 300 MHz to 3200 MHz band signal receiving,processing,has the good signal-to-noise ratio.Field experiment shows that the practical application of this technology will greatly improve the theory of discharge monitoring of power equipment and technology level,the practicability and accuracy of the reinforced insulation diagnosis.The concrete content includes:(1)The smart grid development status at home and abroad are introduced,and analyzed the smart grid,compared with traditional grid difference in monitoring technology and improvement of.Finally from the perspective of economic and social demand,expounds the significance of thesis research.(2)To make a brief introduction of partial discharge mechanism,in the smart grid,it expounds the harm brought by the performance.Through investigating the various common partial discharge detection method,determines the UHF method as the main detection methods of this system,and then again to UHF detection mechanism for further details.(3)Through the external acquisition part,high frequency acquisition card integrated modular display parts,protocol processing unit,can make readers of the whole hardware architecture of the system can have a intuitive understanding and mastery.Finally have conducted a discharge monitoring system for the new and old UHF improvement summary,highlighting the advancement and innovation of the system.(4)The software design part:on the one hand,in view of the above,the hardware part,correspond to design software operation process;On the other hand,users of the system is helped by the human-computer interaction interface.GUI interface designs a method,and the algorithm of software system and its simulation is using MATLAB toolbox combined with LabVIEW.(5)Discharge monitoring system for UHF launched a series of the running effect of verification and testing,the main can be divided into signal extraction test,signal analysis,frequency sweep function,finally summarized a set of system has its own technical parameters.(6)On the paper’s main research content is summarized,and future research direction is presented.