Corona and spark discharges occurring between a grounded sphere and an array of charged multiple electrodes

• Published in: Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting Vol. 3; pp. 1559 - 1564 vol.3
• Main Authors: Sugimoto, T., Chiba, K., Higashiyama, Y.
• Format: Conference Proceeding
• Language: English
• Published: Piscataway NJ IEEE 2004
• Subjects: Applied sciences; Charge measurement; Clouds; Corona; Current measurement; Electrical engineering. Electrical power engineering; Electrical power engineering; Electrodes; Electrostatic discharge; Electrostatic measurements; Exact sciences and technology; Fault location; Operation. Load control. Reliability; Power networks and lines; Space charge; Sparks; Ground discharge; Load distribution; Three dimensional model; Spark discharge; Electrostatic discharge; Spherical electrode; Space charge; Charge transfer; Corona effect
• ISBN: 0780384865; 9780780384866
• ISSN: 0197-2618; 2576-702X
• DOI: 10.1109/IAS.2004.1348678

Corona and spark discharges between a grounded sphere electrode and an array of charged multiple electrodes have been investigated for understanding the characteristics of an electrostatic discharges produced by space charges distributed in three dimension. The electrode array consists of sixty-four 50-cm long by 1-cm diameter conducting rods arranged in an eight-by-eight array with 50-mm spacing between each rod. The entire array was charged by a DC corona discharge. Electrostatic discharges were initiated from the grounded spherical electrode brought in the proximity to the charged array. The electric current and the luminous aspect of the discharge were observed for various sizes of the grounded sphere electrode. The charge distributions of the array before and after the discharge were measured directly. The current waveform and charge transfer of the discharge depend on the polarity of the charged array and the size of the spherical electrode.