NETWORKED DIFFERENTIAL PROTECTION METHOD FOR A DISTRIBUTION NETWORK BASED ON OVERHAULING OF TERMINAL EQUIPMENT
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United States of America Patent
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Issued Date -
Nov 14, 2013
app pub date -
Oct 14, 2012
filing date -
May 11, 2012
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a networked differential protection method for a distribution network based on overhauling of terminal equipment. The present invention comprises the steps of detecting in real time an operation state of a terminal equipment, and reconstructing a differential logic when there is a terminal equipment under an overhaul state so as to bring it into a state in which an overhaul mode and an operation mode are in parallel; for the operation mode in the state in which an overhaul mode and an operation mode are in parallel, only calculating data of all nodes in normal operation in an electrical element by a differential protection for the electrical element, while excluding data under the overhaul state in the electrical element from taking part in calculation. With the method of the present invention, the operation switch may be reliably switched off and failures may be isolated when they appear during an experiment of a scheduled test. The experiment of the scheduled test may be completed, and the correctness of the electrical topological configuration and the terminal equipment network configuration of the networked differential protection device may be automatically verified.
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