Multi-index fuzzy evaluation method for grid faults caused by disasters
A technology for power grid fault and fuzzy determination, which is applied in the fields of electrical digital data processing, instrumentation, and calculation, and can solve the problems of automatic reclosing without considering the voltage level of transmission lines and the length of transmission lines.
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[0072] One, at first, introduce the method principle that the present invention relates to:
[0073] The present invention is based on the definition of four kinds of judgment indicators for the ability of disasters to affect the power grid: the number of trips, the number of unplanned outages, the comprehensive trip rate of regional transmission lines, and the reclosing failure rate, wherein,
[0074] 1. Use N for the number of trips T (j) indicates that it specifically refers to the number of grid trips triggered by disaster j each year, and its unit is next year;
[0075] 2. Use N for the number of unplanned outages NPO (j) indicates that it specifically refers to the number of grid trips triggered by disaster j each year, and its unit is next year;
[0076] 3. R is used for the comprehensive trip rate of regional transmission lines CT (j) means, based on the following formula:
[0077] R CT ( j ...
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