Title :
Study on characteristics and detection of DC arc fault in power electronics system
Author :
Liu Yuan ; Ji Shengchang ; Wang Jin ; Yao Xiu ; Zhu Yeye
Author_Institution :
State Key Lab. of Electr. Insulation & Power Equip., Xi´an Jiaotong Univ., Xi´an, China
Abstract :
In power electronics System, dc arc, which is difficult to extinguish and to be detected, would easily lead to fire causing great harm to the lines and equipment around[1]. In this paper, a dc arc generation simulation unit is designed. A series DC arc can be generated by dragging the moving electrode away from the fixed one with the help of the stepper motor. During experiments, gap distances, the shape and speed of electrodes are changed to determine the influence factors of the characteristics of series dc arcs. Based on the experimental data, the V-I characteristic of the dc arc is determined. In addition, by analyzing the pulse characteristics of arc current and source output in corresponding window of time, a dc arc fault detection methodology is proposed based on the abrupt change of current and source output, thus makes a good foundation for future works.
Keywords :
arcs (electric); electrodes; fault diagnosis; power electronics; stepping motors; DC arc fault detection; V-I characteristic; arc current; dc arc generation simulation unit; electrode speed; gap distances; power electronics system; pulse characteristic analysis; series DC arc; stepper motor; Circuit faults; Current measurement; Electrodes; Fault detection; Insulation; Resistance; Voltage measurement; arc current variation; characteristics of dc arc; dc source rate of change; fault detection;
Conference_Titel :
Condition Monitoring and Diagnosis (CMD), 2012 International Conference on
Conference_Location :
Bali
Print_ISBN :
978-1-4673-1019-2
DOI :
10.1109/CMD.2012.6416335
