Electronic Science and Technology ›› 2019, Vol. 32 ›› Issue (3): 47-52.doi: 10.16180/j.cnki.issn1007-7820.2019.03.010

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Analysis on Electric Field and Electrodynamics Force of Switching Air-core Reactor

WANG Yang,LI Yingna,LI Chuan   

  1. School of Information Engineering and Automation,Kunming University of Science and Technology,Kunming 650500,China
  • Received:2018-03-18 Online:2019-03-15 Published:2019-03-01
  • Supported by:
    National Natural Science Foundation of China(51567013);National Natural Science Foundation of China(51667011)


For the influence of frequent switching operations on the insulation of dry-type air-core reactors, in order to ensure the safe and stable operation of the power system, the simulation and experimental analysis methods were applied to analyze the electric field and electrodynamics force of the reactor under steady state and switching transient state. The distribution and numerical changes of electric and electrodynamics force were further compared under the two states through the establishment of simulation model of Maxwell’s air-core reactor. The results showed that the electric field strength and electrodynamics force under the switching operation were significantly increased compared with that under the steady state operation, and the insulation thickness needed to reach 0.0325mm to constrain the radial electrodynamics force generated during the switching process. The transient switching process imposed a higher requirement for the insulation thickness of the reactor, which provided a certain theoretical basis for the industrial design of the air-core reactor.

Key words: dry-type air-core reactor, electric field distribution, finite element method, electrodynamics force, coupling, insulation performance

CLC Number: 

  • TP301