Fault positioning method based on power transmission line
The invention discloses a fault positioning method based on a power transmission line, the power transmission line MN is provided with a starting end M and a tail end N, a fault point C is located between the starting end M and the tail end N. When a fault occurs, the fault point C generates a zero-...
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| creator | LIU MIN DU SONGFENG SUN QINGYU ZOU CONG CHENG GUANG WANG DULIANG GENG BAOHUA SUN WEI LI JIANGCHUAN WANG TIAN WANG QIANG |
| description | The invention discloses a fault positioning method based on a power transmission line, the power transmission line MN is provided with a starting end M and a tail end N, a fault point C is located between the starting end M and the tail end N. When a fault occurs, the fault point C generates a zero-sequence current, and primary equipment of the line is monitored through protection devices distributed and installed on a circuit breaker side. The protection action condition is set through a protection fixed value in the protection device, when the voltage and current of the line meet the protection action logic and reach the action value set by the protection fixed value, action information is sent to the measurement and control device through time delay, the measurement and control device conducts opening operation on the circuit breaker, and meanwhile according to the protection action information, the protection action condition is set. Fault recording information is obtained, and then a fault point is posit |
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When a fault occurs, the fault point C generates a zero-sequence current, and primary equipment of the line is monitored through protection devices distributed and installed on a circuit breaker side. The protection action condition is set through a protection fixed value in the protection device, when the voltage and current of the line meet the protection action logic and reach the action value set by the protection fixed value, action information is sent to the measurement and control device through time delay, the measurement and control device conducts opening operation on the circuit breaker, and meanwhile according to the protection action information, the protection action condition is set. 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When a fault occurs, the fault point C generates a zero-sequence current, and primary equipment of the line is monitored through protection devices distributed and installed on a circuit breaker side. The protection action condition is set through a protection fixed value in the protection device, when the voltage and current of the line meet the protection action logic and reach the action value set by the protection fixed value, action information is sent to the measurement and control device through time delay, the measurement and control device conducts opening operation on the circuit breaker, and meanwhile according to the protection action information, the protection action condition is set. Fault recording information is obtained, and then a fault point is posit</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING |
| title | Fault positioning method based on power transmission line |
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