Insulation Fault Analysis of Capacitor in 10kV Reactive Power Compensation Device Capacitor on Low Voltage Side of 220kV Transformer
Reactive power compensation of capacitor plays an important role in improving voltage stability of the system,reducing loss of transmission line and substation. In view of full fusion and body burning of external fuse protection of capacitor of 10 kV system at one for a 220 kV substation,the main reasons for the capacitor insulation damage and the further expansion of the fault are analyzed on the basis of the unplaning of the faulty capacitor. The irrationality of imbalance protection setting is found by calculation analysis,the fault process is repeated through simulation software PSCAD/EMTDC and the fault result is verified. Finally,corresponding treatment suggestions are proposed to avoid the recurrence of the fault and assure normal operation of capacitor.
reactive power compensationshunt capacitorfailure analysisdouble starPSCAD
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