DETERMINATION DEVICE AND METHOD FOR OPERATING CHARACTERISTICS OF CIRCUIT BREAKER OF GAS INSULATION SWITCHGEAR(GIS)

• Main Authors: JU, HYUNG JUN, AHN, KI JUNG, YOON, JIN YUL, HAN, KI SON
• Format: Patent
• Language: English; Korean
• Published: 02.12.2011
• Subjects: BASIC ELECTRIC ELEMENTS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; EMERGENCY PROTECTIVE DEVICES; GENERATION; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; RELAYS; SELECTORS; TESTING

PURPOSE: A gas insulation switchgear cut-off part characteristic measurement apparatus and method are provided to measure the operation characteristic of a cut-off part in a real load state during regular operation of gas insulation switchgear, thereby minimizing measurement errors and improving the reliability of measurement data. CONSTITUTION: A sensor(211) senses the cut-off part opening/closing operation of driving gas insulation switchgear and outputs a characteristic signal. A state judgment part(240) kerf-fits the characteristic signal outputted from the sensor. An operation characteristic change rate of the cut-off part is outputted by extracting slope of the kerf-fitted characteristic signal. The state judgment part determines an opening or closing state of the cut-off part from the calculated operation characteristic change rate. A soundness judgment part(215) judges the operation soundness of the cut-off part. The soundness judgment part comprises a differentiator(221), an FFT(Fast Fourier Transform) converter(228), a wavelet converter(225), and an operation part(230).