Studies on the On-line Insulation Monitoring System of High Voltage Electric Equipment in Substations
|School||North China Electric Power University|
|Course||Proceedings of the|
|Keywords||Line Insulation Monitoring High voltage capacitor type equipment Substation Online monitoring Measurement system Immunity test Intelligent terminal Technical design Design flow chart Fieldbus technology|
This paper first describes the current situation and development trend of the importance of conducting line insulation monitoring at home and abroad to carry out this work . Then , line insulation monitoring system and in this article do work . The paper select the high voltage capacitor device as online monitoring of objects , specially developed the online monitoring system of fieldbus technology designed for this type of equipment . Value describes the composition of the online monitoring system of high - voltage electrical equipment , and in theory analysis of the insulating characteristics of the high-voltage capacitor type device , the mathematical model , the digital waveform analysis method based on Fourier transform of the signal analysis and calculations , as online monitoring method . An error may occur on the high voltage capacitor type device in monitoring , analysis and judgment. The sensor is a key component in the online monitoring system , particularly in technical requirements and design characteristics of the sensor . Discussed in detail on the part of the text of the online monitoring system of communication . Firstly, the concept of fieldbus technology , and discusses its characteristics , and then select the communication program and given the application points . Finally, the software design flow chart of the communications between the control end of the host computer and the next machine scene intelligent terminal . After the completion of the on -line monitoring system hardware part and the software part of the design , laboratory testing and simulated field of low-voltage analog high voltage test and immunity test . The results of these tests show that the online fieldbus technology insulation monitoring system works correctly , the monitoring results are valid . Line insulation monitoring , a useful exploration , research has practical significance for promoting China insulation online monitoring .