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Indexed by:期刊论文

Date of Publication:2022-06-28

Journal:高电压技术

Affiliation of Author(s):电子信息与电气工程学部

Volume:42

Issue:10

Page Number:3214-3220

ISSN No.:1003-6520

Abstract:In order to accomplish parameters estimation and prediction of zero
   crossing point, and determine fault types quickly and accurately, we
   designed a three-phase controlled fault interruption control system. The
   hardware of control system has the field-programmable gate array
   EP4CE15F17C8N as the controlling core with AD sampling, bus transaction
   and other peripheral circuits. Based on the principle of controlled
   fault interruption and adaptive RLS algorithm, the fault initial time
   detection and waveform recovery were completed, and the software of
   control system was designed. Moreover, through experimental circuit
   built by the relay protection tester, we tested the accuracy and
   stability of the system. The results show that the system can determine
   the occurrence of fault within 3 ms, and the result of 3sigma of zero
   crossing point errors is [-0.240 2, 0.416 2] ms. This means that the
   control system meets the demands of the accuracy and speed of controlled
   fault interruption.

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