Visual live-line condition monitoring of composite insulators

Today's society has an ever increasing demand for electrical energy. The UK's core electrical infrastructure is approximately 60 years old and is reaching the end of its originally intended lifespan. However it is not economically viable to completely replace aging components; a better solution being to actively monitor infrastructure components and perform maintenance as required. This paper focuses on the monitoring of transmission line insulators. It reports on the initial stages of the development of a system for visually inspecting exposed surfaces of composite insulators under live-line conditions, whilst mounted to the insulator itself. Various image capture mechanisms are discussed and detail is provided on chosen solution. Data transmission experimentation is presented from the viewpoint of ASCII data, which can be subsequently replaced with digital images. Results presented indicate that a moderate wireless communication channel is perfectly viable under high field strength conditions and indicate no reason why higher bandwidth communication mechanisms should not also function effectively.

[1]  Andreas Dernfalk,et al.  Image analysis and laser induced fluorescence combined to determine biological growth on silicone rubber insulators , 2005 .

[2]  P.J. Moore,et al.  Partial discharge investigation of a power transformer using wireless wideband radio-frequency measurements , 2006, IEEE Transactions on Power Delivery.

[3]  V. L. Chartier,et al.  Radio Noise Measurements on Overhead Power Lines from 2.4 to 800 KV , 1971 .

[4]  G. Jaensch,et al.  Locating defects in high voltage transmission lines , 1998, ESMO '98 - 1998 IEEE 8th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Proceedings ESMO '98 Proceedings. ESMO 98 The Power is in Your Hand.

[5]  Kevin Barraclough,et al.  I and i , 2001, BMJ : British Medical Journal.

[6]  Masayuki Hikita,et al.  Electromagnetic noise spectrum caused by partial discharge in air at high voltage substations , 1998 .

[7]  Qingshan Shan,et al.  Performance of Zigbee in Electricity Supply Substations , 2007, 2007 International Conference on Wireless Communications, Networking and Mobile Computing.

[8]  Tseng-Wu Liao,et al.  Power Line Radiations and Interference Above 15 MHz , 1969 .

[9]  S. Montambault,et al.  The HQ LineROVer: contributing to innovation in transmission line maintenance , 2003, 2003 IEEE 10th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance, 2003. 2003 IEEE ESMO..

[10]  Yao Wang,et al.  Development of Hanging-Arm Inspection Robot for High-Voltage Transmission Line , 2008, ICIRA.

[11]  S. Montambault,et al.  Preliminary results on the development of a teleoperated compact trolley for live-line working , 2000, 2000 IEEE ESMO - 2000 IEEE 9th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Proceedings. ESMO 2000 Proceedings. Global ESMO 2000. The Pow.

[12]  H. Okubo,et al.  Phase-resolved partial discharge measurements and their electromagnetic spectrum in SF/sub 6/ gas , 1993 .

[13]  Philip J. Moore,et al.  Characterisation of radio frequency interference from high voltage electricity supply equipment , 2003 .

[14]  John H. Dunlap,et al.  Robotic Maintenance of Overhead Transmission Lines , 1986, IEEE Power Engineering Review.

[15]  Y. Zhou,et al.  The investigation of insulation defects in transmission line disc insulators using remote detection techniques , 1994, Proceedings of 1994 4th International Conference on Properties and Applications of Dielectric Materials (ICPADM).

[16]  Rafael Aracil,et al.  Telerobotic system for live power lines maintenance: ROBTET , 1998, Proceedings. 1998 IEEE International Conference on Robotics and Automation (Cat. No.98CH36146).

[17]  Guo-Ping Liu,et al.  Control of Inspection Robots for Power Transmission Lines Based on Remote Video over Internet , 2005, International Conference on Computational Intelligence for Modelling, Control and Automation and International Conference on Intelligent Agents, Web Technologies and Internet Commerce (CIMCA-IAWTIC'06).

[18]  D. A. Hoch,et al.  Infra-red and ultra-violet imaging techniques applied to the inspection of outdoor transmission voltage insulators , 2002, IEEE AFRICON. 6th Africon Conference in Africa,.

[19]  R. Aracil,et al.  ROBTET: a new teleoperated system for live-line maintenance , 1995, Proceedings of ESMO'95 - 1995 IEEE 7th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance.

[20]  Raj Aggarwal,et al.  Radio frequency measurement of different discharges , 2003, 2003 IEEE Bologna Power Tech Conference Proceedings,.

[21]  Masayuki Hikita,et al.  Electromagnetic spectrum caused by partial discharge in air under AC and DC voltage application , 1994, Proceedings of 1994 4th International Conference on Properties and Applications of Dielectric Materials (ICPADM).

[22]  R. G. Olsen,et al.  Use of Global Positioning System (GPS) Receivers under Power Line Conductors , 2002, IEEE Power Engineering Review.

[23]  R. J. Mather,et al.  Radio Interference from High-Voltage Lines , 1963 .

[24]  Rafael Aracil,et al.  Teleoperated robots for live power lines maintenance (ROBTET) , 1997 .

[25]  Tsutomu Hasegawa,et al.  Application of live line work robots for distribution work: Kyushu Electric's challenges for fully-automated robotic system , 2001, Adv. Robotics.