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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| creator | DENG CHAOPING CHAO WUJIE DONG XINZHOU LIN GUODONG CHEN BINSHU HUANG JUNWEI JIN BOLIANG DAI YUANYUAN WANG HAOZONG |
| description | 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 |
| format | Patent |
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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. 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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</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY |
| title | Method and device for preventing distance protection misoperation, equipment and storage medium |
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