Verification Scheme of Negative Sequence Voltage Blocking for Busbar Protection Based on Vector Computation
In order to solve the problem of negative-sequence blocking voltage verification in bus protection com-plex voltage blocking,the decomposition and calculation of negative-sequence voltage of bus protection are stud-ied based on vector calculation method,and a simplified verification method of negative-sequence voltage block-ing is proposed.By adjusting only the B and C phase voltage amplitude,the negative sequence voltage is changed,and the zero sequence voltage and phase voltage meet the locking requirement,and no snatch phenom-enon occurs.The test platform is set up to verify the verification scheme.
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