Facility Monitoring Device Developing for the Insulators Leakage Current Detection

Abstract:

In the smart power grids construction and for the needs of the power distribution reliability，and for the overhaul and maintenance of the power equipment, it is important for all the operation equipment condition being under monitoring. All equipment has its own characteristics. These characteristics give the customizing messages for monitoring the equipment condition. For the overhead lines insulators, its leakage current mainly mirror insulating property and can give out the insulating strength degrading in time. So trying to monitor the insulators leakage current is significant for Electrical safety. In this paper, the polluted insulator leakage current generating mechanism and characteristics in the operating voltage be analyzed, the actual use of the leakage current on-line monitoring methods and equipment be compared. Based on MSP430 single chip, one facility insulator leakage current online monitoring device is developed. This on-line monitoring device make up of leakage current signal acquisition unit, periodically the leakage current signal into the signal processing unit, the microcontroller to process data effectively, and given the alarm in case of problems, and the data stored by the host computer communication module and communication. By preliminary testing on the good and polluted insulator, the test data reflect the polluted insulator leakage current changed condition, and can find out fault insulators nicely.

• Periodical: Advanced Materials Research (Volumes 516-517)
• Pages: 1521-1526
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.516-517.1521
• Online since: May 2012
• Authors: Fu Jiang Mo, Ying Yu Pan, Hai Dong Xu, Ming Li He
• Keywords: Insulator Leakage Current, Insulator Strength, MSP430, Online Monitoring

References

[1] Dengming Xiao, Power equipment online monitoring and faults diagnose [M], Shanghai Jiao Tong University press, (2006)

[2] Xingbo Huang, Ronggui Chen etc. Transmission lines online monitoring and faults diagnose [M], China Electric Power PRESS, (2008)

[3] Weiguo Li, Zhijian Tu, Eectrical equipment insulation test and detection [M], China Electric Power PRESS, 2006.

[4] Xinghpng Xie, Fanqiang Lin, Xiongying Wu, MSP430 single chip element and practice [M], Beijing University of Aeronautics and Astronautics press, (2008)

[5] Jianhui Zhang, Study on the polluted flashover mechanism and their influencing factors of insulator[D], Chongqing University doctoral dissertation(2003)

[6] Tianri Yang, Design and application of insulation resistance tester[J], electronic instrumentation customer, 2006.6 pp.48-50