Method and device for preventing distance protection misoperation, equipment and storage medium
The invention discloses a method and device for preventing distance protection misoperation, equipment and a storage medium. The method comprises the following steps: when overload latching protection is started, setting an overload identification criterion as a first criterion; judging whether line...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a method and device for preventing distance protection misoperation, equipment and a storage medium. The method comprises the following steps: when overload latching protection is started, setting an overload identification criterion as a first criterion; judging whether line fault tripping occurs outside the to-be-protected line or not according to a preset judgment rule; when line fault tripping occurs, the overload identification criterion is modified into a second criterion; the stability of the first criterion is greater than that of the second criterion; performing overload identification according to the overload identification criterion and the inter-phase cosine voltage to obtain an overload identification result; and adjusting the distance protection section III according to an overload identification result. According to the embodiment of the invention, whether line fault tripping occurs outside the to-be-protected line or not can be identified, different criteria are adapti |
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