FIELD: power engineering; protection of overhead power transmission lines deiced by three-phase short-circuit current. SUBSTANCE: double-output transient-condition sensor, second delay element, as well as AND gate are newly introduced to record two changes in line condition; first output of transient-condition sensor is connected to input of second delay element whose output is connected to first input of AND gate; second output of transient- condition sensor is connected to second input of AND gate whose output is connected to disconnecting circuit of main deicing switch. Information about disconnection of short-circuiting switch is obtained without using special data transmission channel. EFFECT: improved reliability of disconnection of line circuit breaker in case of trouble caused by ice melting. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR CIRCUIT BREAKER CONTROL IN ICE MELTING | 1996 |
|
RU2101824C1 |
| GEAR CONTROLLING SHORT-CIRCUITING SWITCH IN CIRCUITS MELTING ICE DEPOSITS | 1996 |
|
RU2123750C1 |
| DEVICE FOR CONTROLLING SHORT-CIRCUITING SWITCH IN SLEET MELTING | 0 |
|
SU1023485A1 |
| DEVICE FOR CONTROL OVER SHORT-CIRCUITING SWITCH FOR ICE-MELTING | 0 |
|
SU1642544A1 |
| DEVICE FOR ADJUSTING SHORT-CIRCUIT BREAKER WHEN MELTING GLAZED FROST | 0 |
|
SU1132320A1 |
| ICE DETECTOR FOR OVERHEAD POWER TRANSMISSION LINES | 1995 |
|
RU2080723C1 |
| METHOD OF REMOTE CONTROL OF SHORT-CIRCUITING SWITCH IN GLAZE ICE MELTING NETWORK | 0 |
|
SU817837A1 |
| DEVICE FOR CONTROLLING SWITCHING DEVICES AT MELTING GLAZED FROST | 0 |
|
SU1051636A1 |
| DEVICE FOR ADJUSTING POWER LINE CIRCUIT BREAKER WHEN MELTING GLAZED FROST | 0 |
|
SU1132319A1 |
| DEVICE FOR CONTROL OF SHORTING SWITCH | 0 |
|
SU824371A1 |
