陈景荣,邱立伟,万玉晶,李建,张榆,潘荣超,刘念.大型电动机高阻抗差动保护稳定校验研究[J].电测与仪表,2015,52(1):. Chen Jing-rong,Qiu Li-wei,Wan Yu-jing,LI Jian,Zhang Yu,PAN Rong-chao,LIN Nian.Study of Stability Check of High Impedance Differential Protection for the Large Motor[J].Electrical Measurement & Instrumentation,2015,52(1):.
大型电动机高阻抗差动保护稳定校验研究
Study of Stability Check of High Impedance Differential Protection for the Large Motor
For the problem of large motor protection in the nuclear station, the stability check method of high impedance differential protection for large motors is presented, and we analysze the effect of CT excitation inflection point, CT number of turns ratio and CT loop cable resistance for the high impedance differential protection of large motors. The test method of stability check for the high impedance differential protection is also introduced, and the setting calculation of evaluation is completed, according to the actual motor dynamic simulation test. At last, the conclusion was obtained by analyzing the test data.
