发明名称 |
METHOD FOR ADAPTING A PROTECTIVE RELAY TO THE MAINS FREQUENCY, AND A PROTECTIVE RELAY |
摘要 |
The invention relates to a method for adapting a protective relay (7) to the mains frequency and a protective relay, the method comprising the steps of determining the mains frequency, and sampling a measured variable of mains frequency in order to provide physical samples. The method further comprises the steps of re-sampling the measured variable, by means of software, on the basis of the physical samples and the determined mains frequency in order to provide virtual samples and performing the further processing of the measured variable on the basis of the virtual samples.
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申请公布号 |
WO9954976(A1) |
申请公布日期 |
1999.10.28 |
申请号 |
WO1999FI00318 |
申请日期 |
1999.04.20 |
申请人 |
ABB SUBSTATION AUTOMATION OY;KUISTI, HARRI;LEHTINEN, REIJO |
发明人 |
KUISTI, HARRI;LEHTINEN, REIJO |
分类号 |
G01R19/25;H02H1/00;H02H3/46;(IPC1-7):H02H3/02 |
主分类号 |
G01R19/25 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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