FIELD: electricity.
SUBSTANCE: invention is used in electrical engineering. The method involves the following stages: measuring values of current and voltage at undamaged phase conductors in a transmission line in real time when a single-phase fault occurs; computing values of inductive voltage and capacitive joint voltage based on measured values of current and voltage; comparing the value of capacitive joint voltage with the value of inductive voltage multiplied by a coefficient, at that the product is used as a self-regulated threshold value considering load conditions of the power transmission line in real time; and identifying the fault type based on results of the comparison.
EFFECT: improving reliability.
16 cl, 10 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DETERMINING THE PLACE OF DAMAGE TO AIRLINES IN DISTRIBUTION NETWORKS | 2016 |
|
RU2647536C1 |
| RESISTANCE MEASURING CIRCUIT FOR SENSOR WITH GALVANIC ISOLATION | 2005 |
|
RU2350003C2 |
| SYNCHRONISATION METHOD FOR DIFFERENTIAL CURRENT PROTECTION | 2010 |
|
RU2524383C1 |
| METHOD OF IDENTIFYING TYPE OF SHORT-CIRCUITING IN ELECTRIC POWER LINE | 2009 |
|
RU2489724C1 |
| METHOD OF MEASURING REMOTENESS OF SINGLE-PHASE SHORT CIRCUIT IN THREE-PHASE POWER LINE | 2003 |
|
RU2249226C2 |
| METHOD OOF CHECKING DISAPPEARANCE OF SHORT CIRCUIT AT POWER TRANSMISSION LINE DISCONNECTED PHASE AND DEVICE FOR EFFECTING SAME | 0 |
|
SU1092642A1 |
| Method and device for predicting the service cycle of the splice | 2017 |
|
RU2747611C2 |
| METHOD AND DEVICE FOR FAULTY PHASE DETECTION | 2005 |
|
RU2343497C2 |
| METHOD FOR REAL-TIME MONITORING OF OPERATING CONDITIONS OF CAPACITIVE SENSOR | 2015 |
|
RU2686522C2 |
| DETECTION METHOD OF SUBSYNCHRONOUS RESONANCE | 2011 |
|
RU2561763C2 |
