Research and Experimental Verification of Temperature Field of Metal Structure of Ultra-large Capacity Dry-type Air-core Current-limiting Reactor Based on Magnetic-thermal Coupling
In order to solve the heating problem of metal structural parts of 500kV/6000A dry-type air-core current-limiting reactor,based on the installation of a series impedance project in the Shanghai Yuandong-Tingwei 500kV substation,the temperature field distribution characteristics of metal structural parts of a large capacity current-limit-ing reactor with rated current 6000A,single impedance 7Ω and single capacity 252MVar are studied by means of magnetic-thermal coupling simulation and test verification.The results show that:first,the temperature rise test of metal structural parts of current limit-ing reactor is basically consistent with the simulation results,which verifies the accuracy of the simulation calculation;the second is the use of special structural design of alu-minum boom flow,hot spot temperature rise to 92K,to meet the long-term flow re-quirements of large capacity current limiting reactor;the third is the stainless steel sup-port structure with low eddy current design structure,and the hot spot temperature rise does not exceed 100K to meet the support strength requirements.
Air core reactorCurrent-limiting reactorTemperature rise of metal structural partMagnetic-thermal coupling
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