Harmonic entrainment prevention device, reactor device, and phase advance capacitor device

摘要

PPROBLEM TO BE SOLVED: To prevent a harmonic pull-in phenomenon which is a kind of ferro resonance between a phase-advanced capacitor inserted into a power system and its serial reactor. PSOLUTION: A phase-advanced capacitor device 10 comprises a phase-advanced capacitor 11 and a serial reactor 12 connected electrically to the phase-advance capacitor 11. A harmonic pull-in phenomenon preventing device 20 is connected in series to the phase-advance capacitor 11 while being connected in parallel to the serial reactor 12. The harmonic pull-in phenomenon preventing device 20 is composed of a gap element 21, a varistor element 22, and a resistance element 23 whose resistance value is 50 to 2 k connected in series. PCOPYRIGHT: (C)2006,JPO&NCIPI