REACTOR HIGHER HARMONIC FAULT PREVENTION METHOD

• Main Authors: UEHARA MASAKAZU, SUZUKI HITOSHI, KOBAYASHI HIROSHI, NAKAMURA KOICHI, KOSUGI YASUO
• Format: Patent
• Language: English
• Published: 10.03.1998
• Edition: 6
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROLLING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PHYSICS; REGULATING; SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES; SYSTEMS FOR STORING ELECTRIC ENERGY

PROBLEM TO BE SOLVED: To prevent the flow-in of an excessive current and to prevent the overheating and burning, etc., of a reactor even when the voltage of both terminals of the reactor rises by connecting a voltage rise control means for suppressing the rise of the voltage by the energizing of a current including higher harmonic to the reactor. SOLUTION: A surge absorber SA is a voltage rise suppression element and normally keeps insulation, however, when the voltage applied to both terminals of the reactor L exceeds the limit voltage of the surge absorber SA, is turned to a conductive state. Then, by parallelly connecting the surge absorber SA to the reactor L, the voltage including the higher harmonic applied to both terminals of the reactor L is prevented from exceeding the limit voltage of the surge absorber SA. Since the reactor L is a linear element and a flowing current is made small when the voltage is made small, the energizing of the excessive higher harmonic current to the reactor L is prevented and higher harmonic faults such as the overheating and burning of the reactor L are prevented.