| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ground detection control method of a parallel structure high voltage system in which a possibility of temporary operation can be determined by more precisely determining whether to stop emergency operation of the parallel structure high voltage system. <P>SOLUTION: A ground detection control method includes the step of calculating and updating a synthetic insulation resistance ground reference value R<SB POS="POST">TREF</SB>on the basis of individual insulation resistance values R<SB POS="POST">1</SB>to R<SB POS="POST">n</SB>of items, measuring a starting synthetic insulation resistance value R<SB POS="POST">Tn</SB>of a high voltage power net, and comparing an error from an ending synthetic insulation resistance value R<SB POS="POST">Tn</SB>'. The method further includes the step of calculating and updating a synthetic insulation resistance value R<SB POS="POST">T</SB>in accordance with the individual insulation resistance values R<SB POS="POST">1</SB>to R<SB POS="POST">n</SB>of the items, and comparing the synthetic insulation resistance value R<SB POS="POST">T</SB>to the synthetic insulation resistance ground reference value R<SB POS="POST">TREF</SB>in real time. In the case where the error between the starting synthetic insulation resistance value R<SB POS="POST">Tn</SB>and the ending synthetic insulation resistance value R<SB POS="POST">Tn</SB>' is greater than the reference value and the synthetic insulation resistance value R<SB POS="POST">T</SB>is smaller than the synthetic insulation resistance ground reference value R<SB POS="POST">TREF</SB>, system operation is stopped urgently. <P>COPYRIGHT: (C)2012,JPO&INPIT |
