CN104459455A - Overhead line fault indication device - Google Patents
Overhead line fault indication device Download PDFInfo
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- CN104459455A CN104459455A CN201310430589.4A CN201310430589A CN104459455A CN 104459455 A CN104459455 A CN 104459455A CN 201310430589 A CN201310430589 A CN 201310430589A CN 104459455 A CN104459455 A CN 104459455A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
The invention discloses an overhead line fault indication device which comprises a fault indicator and a processor. The fault indicator comprises a first fault indicator and a second fault indicator which are arranged on the same phase line of an overhead line. The first fault indicator and the second fault indicator are used for detecting and sending fault information of the positions where the fault indicators are placed respectively. The processor is used for receiving fault information sent by the first fault indicator and the second fault indicator and determining a phase line fault zone according to the fault information sent by the first fault indicator and the second fault indicator. According to the overhead line fault indication device, a single-phase grounded fault zone can be located.
Description
Technical field
The present invention relates to field of power transmission, in particular to a kind of overhead transmission line accident indicator.
Background technology
Electric power transfer is safely the important embodiment of electric power transfer quality, and the phase fault of the power transmission lines such as overhead transmission line and singlephase earth fault cause safely immense pressure to electric power transfer, therefore, when fault occurs, the timely repairing of electric power first-aid personnel seems particularly important.The geographic range related to due to power supply overhead transmission line is very wide, and therefore, when fault occurs, electric power first-aid personnel can the quick position position of fault be the important guarantees shortening emergency repair time.
In order to the quick position position of fault, provide a kind of scheme in the prior art, in this scenario, along overhead transmission line, overhead transmission line accident indicator is installed.When overhead transmission line generation phase fault, overhead transmission line accident indicator can orient the fault section that phase fault occurs fast and exactly, but when overhead transmission line generation singlephase earth fault, this overhead transmission line accident indicator but can not orient the fault section that single-phase earthing occurs effectively.
For the problem of fault section can not locating single-phase earthing in correlation technique, at present effective solution is not yet proposed.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of overhead transmission line accident indicator, to solve the problem of the fault section can not locating single-phase earthing in correlation technique.
To achieve these goals, according to an aspect of the present invention, a kind of overhead transmission line accident indicator is provided.This overhead transmission line accident indicator comprises: fault detector, fault detector comprises Fisrt fault indicator and the second fault detector, Fisrt fault indicator and the second fault detector are arranged in the same phase line of overhead transmission line, and Fisrt fault indicator and the second fault detector are respectively used to the failure message detecting and send present position; Processor, for receiving the failure message that Fisrt fault indicator and the second fault detector send, and the fault section of the failure message determination phase line sent according to Fisrt fault indicator and the second fault detector.
Further, fault detector comprises: first group of fault detector, is separately positioned on the first-phase circuit of overhead transmission line; Second group of fault detector, is separately positioned on the second-phase circuit of overhead transmission line; 3rd group of fault detector, is separately positioned on the third phase circuit of overhead transmission line.
Further, fault detector comprises: the 4th group of fault detector, is separately positioned on the primary importance of the three-phase phase line of overhead transmission line; 5th group of fault detector, is separately positioned on the second place of the three-phase phase line of overhead transmission line.
Further, 4th group of fault detector is separately positioned on the primary importance of the three-phase phase line of the backbone of overhead transmission line, 5th group of fault detector is separately positioned on the second place of the three-phase phase line of the backbone of overhead transmission line, wherein, primary importance and second place interval predeterminable range on the bearing of trend of the backbone of overhead transmission line.
Further, overhead transmission line comprises backbone and is connected the first branch line with by backbone, 4th group of fault detector is separately positioned on the primary importance of the three-phase phase line of the first branch line of overhead transmission line, 5th group of fault detector is separately positioned on the second place of the three-phase phase line of the first branch line of overhead transmission line, wherein, the second place of the primary importance of the three-phase phase line of the first branch line and the three-phase phase line of the first branch line interval predeterminable range on the bearing of trend of the first branch line.
Further, overhead transmission line comprises backbone and is connected the first branch line of and the second branch line with by backbone, 4th group of fault detector is separately positioned on the primary importance of the three-phase phase line of the first branch line of overhead transmission line, and the 5th group of fault detector is separately positioned on the primary importance of the three-phase phase line of the second branch line of overhead transmission line.
Further, overhead transmission line comprises backbone and is connected the branch line by backbone, 4th group of fault detector, be separately positioned on the primary importance of the three-phase phase line of the backbone of overhead transmission line, 5th group of fault detector, is separately positioned on the primary importance of the three-phase phase line of the branch line of overhead transmission line.
Further, overhead transmission line accident indicator also comprises: the first isolating switch, is arranged on the first-phase circuit of the backbone of overhead transmission line; Second isolating switch, is arranged on the second-phase circuit of the backbone of overhead transmission line; 3rd isolating switch, is arranged on the third phase circuit of the backbone of overhead transmission line; 4th isolating switch, is arranged on the first-phase circuit of the first branch line of overhead transmission line; 5th isolating switch, is arranged on the second-phase circuit of the first branch line of overhead transmission line; 6th isolating switch, is arranged on the third phase circuit of the first branch line of overhead transmission line.
Further, fault detector comprises: sensor, sensor setting is inner at fault detector, for detection failure information, sensor is current sensor, and current sensor comprises the first current sensor for detecting phase fault and the second current sensor for detecting singlephase earth fault; Communication unit, communication unit is connected with sensor, for sending the failure message that sensor detects.
Further, fault detector also comprises: indicating fault mechanism, be connected with communication unit, be used to indicate failure message, indicating fault mechanism is annunciator and signal lamp, annunciator is be used to indicate normal first annunciator of overhead transmission line and the secondary signal board for indication fault information by day, and signal lamp is for the signal lamp in indication fault information at night.
Further, fault detector also comprises: electric capacity or battery, is arranged in the power circuit of fault detector, for providing power supply for signal lamp; Electricity-fetching module, is arranged in a power, thinks that fault detector provides power supply for obtaining energy from the external world.
Further, communication unit is wireless communication unit, and wireless communication unit comprises: sending module, for sending the failure message that current sensor detects; Receiver module, for the control command that receiving processor sends.
Further, fault detector also comprises: digital signal acquiring unit, and digital signal acquiring unit is arranged between sensor and communication unit, samples for the failure message detected sensor.
Further, fault detector also comprises: clock synchronization unit, for the clock synchronous of multiple fault detector.
Pass through the present invention, adopt fault detector, fault detector comprises Fisrt fault indicator and the second fault detector, Fisrt fault indicator and the second fault detector are arranged in the same phase line of overhead transmission line, and Fisrt fault indicator and the second fault detector are respectively used to the failure message detecting and send present position; Processor, for receiving the failure message of Fisrt fault indicator and the transmission of the second fault detector, and the fault section of the failure message determination phase line sent according to Fisrt fault indicator and the second fault detector, solve the problem of the fault section can not locating single-phase earthing in correlation technique, and then reach the effect shortening the breakdown repair time.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural drawing of the overhead transmission line accident indicator according to the embodiment of the present invention;
Fig. 2 is the structural drawing of the fault detector according to the embodiment of the present invention; And
Fig. 3 is the schematic diagram be arranged on according to the preferably accident indicator of the embodiment of the present invention in overhead transmission line.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
According to embodiments of the invention, provide a kind of overhead transmission line accident indicator, this accident indicator is for locating the fault section of single-phase earthing.
It should be noted that, the Cleaning Principle of overhead transmission line phase fault is: when there is phase fault, and the transmission current on the overhead transmission line before the position of fault and after Bulk Supply Substation abrupt transients can occur, and current break is obvious; And abrupt transients also can occur the transmission current on overhead transmission line after the position of fault, but current break is not obvious, negligible.The Cleaning Principle of overhead transmission line singlephase earth fault is: when there is singlephase earth fault, and the transmission current on the overhead transmission line before the position of fault and after Bulk Supply Substation abrupt transients can occur, and current break is obvious; And abrupt transients also can occur the transmission current on overhead transmission line after the position of fault, but current break is not obvious, negligible.
Fig. 1 is the structural drawing of the overhead transmission line accident indicator according to the embodiment of the present invention.
As shown in Figure 1, this device comprises: fault detector and processor.
Fault detector can comprise Fisrt fault indicator and the second fault detector.Fisrt fault indicator and the second fault detector can be arranged in the same phase line of overhead transmission line.Fisrt fault indicator and the position of the second fault detector in the same phase line of overhead transmission line can be different, and can arrange distance long arbitrarily between the two.Fisrt fault indicator and the second fault detector can be respectively used to the failure message detecting and send its present position.Failure message can comprise the current information of overhead transmission line and the positional information of fault detector.If carry out label in advance to the shaft tower of overhead transmission line, or carry out label in advance to Fisrt fault indicator and the second fault detector, so the positional information of fault detector can also comprise the information such as the number of the shaft tower at fault detector place or the label of fault detector itself.The failure message detected can be sent to processor by fault detector.
Such as, Fisrt fault indicator and the second fault detector can be arranged on A phase (or B phase or the C phase) circuit of overhead transmission line simultaneously.Further, Fisrt fault indicator can be arranged on the first shaft tower of A phase circuit, and the second fault detector can be arranged on the second shaft tower of A phase circuit.And the lable number of the first shaft tower and the second shaft tower is respectively No. 1 and No. 2.Suppose that Fisrt fault indicator detects that in the first moment the electric current at the first shaft tower place of A phase circuit is I11, Fisrt fault indicator detects that in the second moment the electric current at the first shaft tower place of A phase circuit is I12.Fisrt fault indicator is after electric current I 11 and electric current I 12 being detected, electric current I 11 and electric current I 12 can be sent to processor, and Fisrt fault indicator and the failure message such as the shaft tower number at the second fault detector place or the label in advance of Fisrt fault indicator and the second fault detector also can be sent to processor by fault detector.
Processor may be used for the failure message receiving Fisrt fault indicator and the transmission of the second fault detector, and the failure message localizing faults that processor can send according to Fisrt fault indicator and the second fault detector is interval.Processor can be the processor of the central station of intelligent distribution network.Processor can comprise detection analysis software.By detecting analysis software, processor can judge whether current information that Fisrt fault indicator and the second fault detector detect the fault section of current break, the duration of current break and the phase line at place, trouble spot occurs.
Like this, achieve the object of the fault section of location single-phase earthing, thus reach the effect shortening the breakdown repair time.
Such as, the first shaft tower number at Fisrt fault indicator place is 1, in the first moment, Fisrt fault indicator detects that the electric current at A phase circuit first shaft tower place is I11, in the second moment, Fisrt fault indicator detects that the electric current at A phase circuit first shaft tower place is I12, electric current I 11 and electric current I 12 and the first shaft tower number 1, after electric current I 11 and electric current I 12 being detected, can be sent to processor by Fisrt fault indicator; In like manner, the second shaft tower number at the second fault detector place is 2, second fault detector detects that in the first moment the electric current at the second shaft tower place of A phase circuit is I21, second fault detector detects that in the second moment the electric current at the second shaft tower place of A phase circuit is I22, electric current I 21 and electric current I 22 and the second shaft tower number 2, after electric current I 21 and electric current I 22 being detected, can be sent to processor by the second fault detector.Processor is by after detection analysis software, if can get Fisrt fault pointer detection to the value of electric current I 12 be greater than the value of electric current I 11, and the value of the electric current I 22 that the second fault detector detects approximates the value of electric current I 21, so can judge A phase circuit generation singlephase earth fault, and the fault section at place, trouble spot is between the first shaft tower and the second shaft tower; If can get Fisrt fault pointer detection to the value of electric current I 12 be greater than the value of electric current I 11, and the value of the electric current I 22 that the second fault detector detects also is greater than the value of electric current I 21, so can judge A phase circuit generation singlephase earth fault, and the fault section at place, trouble spot is the position after the second shaft tower.
In embodiments of the present invention, processor can also send various control order.Such as, processor can send the order arranging parameter lock in time, also can send the order arranging fault condition, can also send the order etc. controlling the involution of indicating fault mechanism.
In embodiments of the present invention, by adopting accident indicator, the effect determining fault type and localizing faults interval is reached.
In embodiments of the present invention, as shown in Figure 2, fault detector can comprise sensor and communication unit.Sensor can be arranged on the inside of overhead transmission line accident indicator, and it may be used for detection failure information.Sensor can comprise current sensor and voltage sensor.Such as, sensor can be current sensor.Current sensor can comprise the first current sensor and the second current sensor.First current sensor may be used for detecting phase fault, and the second current sensor may be used for detecting singlephase earth fault.First current sensor and the second current sensor are respectively used to detection phase fault and singlephase earth fault can be detect phase fault current information and single-phase-to-ground current information respectively.
Like this, the phase fault of overhead transmission line and the current information of single-phase earthing is detected by sensor, and the current information detected is converted to the adaptable current signal of fault detector of the applicable embodiment of the present invention, such as, this adaptable current signal can be the current signal that current value is less, thus reaches the effect of the failure message detecting overhead transmission line.
In embodiments of the present invention, the communication unit of fault detector is connected with sensor, may be used for the failure message that transmission sensor detects.Communication unit can be wireless communication unit.Such as, wireless communication unit can be 51 single-chip microcomputers etc.Wireless communication unit can comprise: sending module and receiver module.
Sending module may be used for the failure message that transmission current sensor detects, and failure message is sent to processor.Failure message can comprise the fault type such as short trouble that the first current sensor detects and the earth fault that the second current sensor detects.Short trouble can be the phase fault of A phase and B phase, B phase and the phase fault of C phase and the phase fault of A phase and C phase.Earth fault can be A phase earth fault, B phase earth fault and C phase earth fault.Failure message can also comprise the number information or other positional informations of fault detector place etc. of the shaft tower at fault detector place.When sending module sends failure message, can first carry out contrasting to judge fault type with the fault condition that presets, and then the failure messages such as the number information of the shaft tower at fault type and fault detector place or other positional informations of fault detector place are sent to processor.
Such as, suppose that the fault detector of the embodiment of the present invention is arranged on the first shaft tower of overhead transmission line, when A phase and B phase alternate is short-circuited fault, sensor can detect the phase fault current information of A phase and B phase.After sensor detects the phase fault current information of A phase and B phase, this phase fault electric current and the phase fault electric current preset can first contrast by communication unit.If the phase fault current value detected actual generation abrupt transients compared with the phase fault current value preset, then show that this phase fault occurs in certain position between A phase before this fault detector and B phase.
Like this, sending module, by sending the failure messages such as the number information of the shaft tower of failure message and fault detector place to processor, reaches the effect shortening the breakdown repair time.
Receiver module may be used for the information such as the control command of receiving processor transmission.Control command can comprise the optimum configurations etc. of the overhead transmission line accident indicator to the embodiment of the present invention.Such as, the control commands such as the fault condition that the amendment that receiver module may be used for receiving processor transmission presets.
Like this, the control command arranging correlation parameter sent by receiving processor is with the different fault condition of setting, and fault detector can be arranged on the diverse location of overhead transmission line.
In embodiments of the present invention, by detecting the current information of overhead transmission line, and the positional information at this current information and this current information place is sent to processor, reach and determine fault type and the effect in localizing faults interval, and then reach the effect shortening the breakdown repair time.
Preferably, this fault detector can also comprise digital signal acquiring unit, for sampling to current signal.Such as, 64 points can be gathered carry out Fast Fourier Transform (FFT) (FFT) in each cycle of electric current, become digital signal to communicate analog-signal transitions.Like this, by digital signal acquiring unit, reach and improve the sensitivity of fault detect and the effect of accuracy.
It should be noted that, counting of gathering in the single cycle is more, and the result of detection will be more accurate, but the cost of cost also can be larger.
Preferably, this fault detector can also comprise indicating fault mechanism.Indicating fault mechanism is connected with communication unit, and it can be used to indicate different fault types under the triggering of failure message.Indicating fault mechanism can be annunciator and signal lamp.Annunciator can comprise the first annunciator and secondary signal board, and different annunciators indicates different failure messages.Such as, the first annunciator can be the annunciator adopting red fluorescence paint, and secondary signal board can be the annunciator adopting white fluorescent paint.Under light illumination, adopt the annunciator of red fluorescence paint and adopt the visual effect of the annunciator of white fluorescent paint stronger, can obvious indication fault type, and long-term under outdoor Ultraviolet radiation, adopt the annunciator of red fluorescence paint and adopt the annunciator of white fluorescent paint to have the effect of significantly not fading.Wherein, adopt the annunciator of red fluorescence paint that the fault type of overhead transmission line can occur to indicate by day; Adopt the annunciator of white fluorescent paint can indicate the normal condition of overhead transmission line.Signal lamp can indicate the fault type of overhead transmission line at night.For different fault types, the instruction action of signal lamp can not be identical.Such as, be a time cycle with 1s, for instruction phase fault, the flashing times of signal lamp can be set to 2 times/second, and for indication single-phase earth fault, the flashing times of signal lamp can be set to 1 time/second.
Like this, indicating fault mechanism, by annunciator and signal lamp, reaches the effect indicated respectively at different time phases same fault type, but also reaches the effect carrying out distinguishing instruction to different fault types.
Preferably, this fault detector can also comprise electric capacity or battery.Electric capacity or battery are arranged in the power circuit of fault detector, may be used for for signal lamp provides power supply.Electric capacity can first pass through charging accumulation of energy, then by electric discharge for signal lamp provides power supply.Battery can be lithium battery, also can be solar cell etc.Lithium battery can adopt the lithium battery of serviceable life more than 8 years.
Preferably, this fault detector can also comprise electricity-fetching module.Electricity-fetching module arrange in a power, can by from extraneous power taking for fault detector provides working power.Electricity-fetching module can be mutual inductor.Mutual inductor can be the iron core composition of coil and high magnetic conduction, and coordinating the circuit design of Micro Energy Lose, it can produce electric energy by electromagnetic induction principle, thus is reached for the effect that fault detector provides working power.The work of fault detector can be 10A.Electricity-fetching module also can be solar panel.
Preferably, this fault detector can also comprise clock synchronization unit, and its synchronization accuracy can reach 50 microseconds.When the fault detector of multiple embodiment of the present invention is arranged on pole line simultaneously, clock synchronization unit may be used for the clock synchronous between multiple fault detector.Clock synchronization unit can be multiple fault detector synchronous acquisition failure messages.That is, adopt clock synchronization unit multiple fault detector can at synchronization, and sample in interval identical cycle to current signal.The cycle that fault detector gathers current signal can be arranged, and can be arranged by processor.The cycle of fault detector is shorter, and its result gathered is more accurate.Fault detector can trigger fault indicating mechanism indicate fault type in this locality while getting collection result, and the shaft tower number that can send this collection result and its place waits until processor.
Like this, by clock synchronization unit, achieve the synchronism that multiple fault detector detects, improve the accuracy of testing result.Processor can be analyzed testing result by detecting analysis software, thus reaches the effect in the type of failure judgement and the interval of fault generation.
Preferably, in embodiments of the present invention, accident indicator can comprise telepilot.When the breakdown repair of overhead transmission line is complete or after replying power supply, telepilot can control the indicating fault mechanism involution of fault detector.Such as, if the breakdown repair of overhead transmission line is complete or reply power supply occur in daytime, then annunciator can from adopting the annunciator involution of red fluorescence paint to the annunciator adopting white fluorescent paint.If the breakdown repair of overhead transmission line is complete or reply power supply occur in night, then signal lamp will from blink states involution to the state of not glimmering.Processor can control the indicating fault mechanism involution of fault detector by the online mode arranged.
In embodiments of the present invention, fault detector is after failure message being detected, and first, failure message can be sent to processor by gsm module or GPRS module etc. by failure message, and then, failure message can be sent to processor by USB interface.After receiving failure message, processor by detecting analysis software and to compare failure message and judging to obtain fault type and fault section and be sent on mobile phone by the fault type got and fault section, can send alerting signal by triggered alarm simultaneously.Alarm can be hummer.Like this, the waste to the man power and material that line data-logging causes can be reduced.
In embodiments of the present invention, preferably, this device can also comprise mobile phone.Mobile phone may be used for the historical record etc. receiving failure message and check failure message.The mode that mobile phone receives failure message can be receive note or voice signal etc.Wherein, a trouble spot can pre-set one or more phone number.
Like this, reach the effect of automatic decision fault type and fault section, and then reach the effect shortening the breakdown repair time.
It should be noted that, in embodiments of the present invention, the fault detector of this device can be arranged on the backbone of the transmission lines of electricity such as distribution overhead line and branch line and on the arrival line of user power utilization.It can be arranged on the backbone of overhead transmission line and the shaft tower of branch line that fault detector is arranged on the backbone of distribution overhead line and branch line, and each shaft tower carries out label in advance, and different shaft tower labels is different.
Preferably, the fault detector of this device can comprise three groups of fault detectors, and three groups of fault detectors can be respectively: first group of fault detector, second group of fault detector and the 3rd group of fault detector.Wherein, often organize fault detector and at least can comprise 2 identical fault detectors.First group of fault detector can be separately positioned on the first-phase circuit of overhead transmission line, second group of fault detector can be separately positioned on the second-phase circuit of overhead transmission line, and the 3rd group of fault detector can be separately positioned on the third phase circuit of overhead transmission line.
Such as, suppose that three groups of fault detectors are respectively 1 group of fault detector, 2 groups of fault detectors and 3 groups of fault detectors, and 1 group of fault detector, 2 groups of fault detectors and 3 groups of fault detectors are separately positioned on the A phase circuit of overhead transmission line, B phase circuit and C phase circuit.Often organize fault detector and comprise 2 identical fault detectors, be separately positioned on primary importance and the second place of A phase, B phase and C phase circuit.Because fault detector has clock synchronization unit, therefore all fault detectors can accomplish good time synchronized, and namely all fault detectors can ensure to carry out information acquisition at synchronization.Like this, more accurate testing result can be obtained.
Like this, 2 fault detectors of 2 fault detectors of 1 group of fault detector, 2 fault detectors of 2 groups of fault detectors and 3 groups of fault detectors can detect A phase, B phase and the singlephase earth fault of C phase circuit and the fault section of single-phase earthing respectively.
In embodiments of the present invention, the fault detector of this device can also comprise the 4th group of fault detector and the 5th group of fault detector.4th group of fault detector and the 5th group of fault detector can comprise 3 identical fault detectors respectively.4th group of fault detector can be separately positioned on the primary importance of the three-phase phase line of overhead transmission line, and the 5th group of fault detector can be separately positioned on the second place of the three-phase phase line of overhead transmission line.4th group of fault detector and the 5th group of fault detector cooperatively interact, and can detect fault type and the fault section of the three-phase line of overhead transmission line.
Such as, 4 groups of fault detectors and 5 groups of fault detectors can have altogether 6 fault detectors, and 4 groups of fault detectors and 5 groups of fault detectors are separately positioned on the A phase of No. 4 shaft towers and No. 5 shaft towers, B phase and C phase circuit.Suppose that 4 groups of fault detectors are arranged on the electric current that the fault detector on A phase circuit detects and undergo mutation, and 4 groups of fault detectors are arranged on the electric current that the fault detector on B phase circuit detects and also undergo mutation, and the electric current that other 4 fault detectors detect is not undergone mutation, then when failure message is sent to processor by 4 groups of fault detectors and 5 groups of fault detectors, and after processor gets failure message, can judge that this fault type is, between A phase and B phase, phase fault occurs, and be between No. 4 shaft towers and No. 5 shaft towers between shorting region.
In embodiments of the present invention, overhead transmission line can comprise backbone and is connected the branch line by backbone, branch line can comprise the first branch line and the second branch line, and can preset distance long arbitrarily between primary importance and the second place, then the set-up mode of the 4th group of fault detector and the 5th group of fault detector can have multiple:
3 fault detectors of mode one: the four group of fault detector can be separately positioned on the primary importance of the A phase of the backbone of overhead transmission line, B phase and C phase circuit; 3 fault detectors of the 5th group of fault detector can be separately positioned on the second place of the A phase of the backbone of overhead transmission line, B phase and C phase circuit.
3 fault detectors of mode two: the four groups of fault detectors can be separately positioned on the primary importance of the A phase of the first branch line of overhead transmission line, B phase and C phase circuit; 3 fault detectors of the 5th group of fault detector can be separately positioned on the second place of the A phase of the first branch line of overhead transmission line, B phase and C phase circuit.
3 fault detectors of mode three: the four groups of fault detectors can be separately positioned on the primary importance of the A phase of the first branch line of overhead transmission line, B phase and C phase circuit; 3 fault detectors of the 5th group of fault detector can be separately positioned on the primary importance of the A phase of the second branch line of overhead transmission line, B phase and C phase circuit.
3 fault detectors of mode four: the four groups of fault detectors can be separately positioned on the primary importance of the A phase of the backbone of overhead transmission line, B phase and C phase circuit; 3 fault detectors of the 5th group of fault detector can be separately positioned on the primary importance of the A phase of the branch line of overhead transmission line, B phase and C phase circuit.
Like this, achieve the object of the failure message detecting overhead transmission line diverse location, thus reach the effect in fault type and the localizing faults interval determining overhead transmission line diverse location.
Preferably, in embodiments of the present invention, this device can also comprise isolating switch.Isolating switch can comprise the first isolating switch, the second isolating switch, the 3rd isolating switch, the 4th isolating switch, the 5th isolating switch and the 6th isolating switch, wherein, the first isolating switch, the second isolating switch and the 3rd isolating switch can be separately positioned on the first-phase circuit of the backbone of overhead transmission line, second-phase circuit and third phase circuit.4th isolating switch, the 5th isolating switch and the 6th isolating switch can be separately positioned on the first-phase circuit of the first branch line of overhead transmission line, second-phase circuit and third phase circuit.Isolating switch can protect overhead system from the harm of overvoltage and overcurrent etc.
In embodiments of the present invention, reach the effect of automatic decision fault type and fault section, and then reach the effect shortening the breakdown repair time.
Fig. 3 is the schematic diagram be arranged on according to the preferably accident indicator of the embodiment of the present invention in overhead transmission line.
As shown in Figure 3, this circuit diagram mainly comprises: Bulk Supply Substation, isolating switch R1, isolating switch R2, isolating switch R3, isolating switch R4, isolating switch R5, isolating switch R6, P1 group fault detector, P2 group fault detector, P3 group fault detector and P4 group fault detector.
Isolating switch R1, isolating switch R2 and isolating switch R3 are separately positioned on the A phase of basic routing line of the overhead transmission line of Bulk Supply Substation outlet, B phase and C phase circuit, and isolating switch R4, isolating switch R5 and isolating switch R6 are separately positioned on the A phase of the first branch line of overhead transmission line, B phase and C phase circuit.Isolating switch R1 to isolating switch R6 can protect the basic routing line of overhead transmission line and the first branched line of overhead transmission line from the destruction of overvoltage and overcurrent.
In an embodiment of the present invention, accident indicator can comprise P1 group fault detector, P2 group fault detector, P3 group fault detector and P4 group fault detector and processor, and processor can be the processor of the central station of intelligent distribution network.Composition and the setting position of P1 group fault detector, P2 group fault detector, P3 group fault detector and P4 group fault detector are as follows:
P1 group fault detector can comprise 3 fault detectors.3 fault detectors of P1 group fault detector can be respectively P1A fault detector, P1B fault detector and P1C fault detector, and 3 fault detectors can be separately positioned on No. 1 shaft tower of the A phase of overhead transmission line first branched line, B phase and C phase circuit.
P2 group fault detector also can comprise 3 fault detectors.3 fault detectors of P2 group fault detector can be respectively P2A fault detector, P2B fault detector and P2C fault detector, and 3 fault detectors are separately positioned on No. 2 shaft towers of the A phase of overhead transmission line first branched line, B phase and C phase circuit.
P3 group fault detector can comprise 3 fault detectors, 3 fault detectors of P3 group fault detector can be respectively P3A fault detector, P3B fault detector and P3C fault detector, and 3 fault detectors can be separately positioned on No. 3 shaft towers of the A phase of overhead transmission line second branched line, B phase and C phase circuit.Wherein, overhead transmission line second branched line is drawn by between No. 1 shaft tower of overhead transmission line first branched line and No. 2 shaft towers.
P4 group fault detector can comprise 3 fault detectors, it is respectively P4A fault detector, P4B fault detector and P4C fault detector, and 3 fault detectors can be separately positioned on No. 4 shaft towers of the A phase of overhead transmission line second branched line, B phase and C phase circuit.
Like this, overhead transmission line is divided into multiple interval by many groups fault detector, the positional information of the current information of multiple point and multiple point by detecting the current information of multiple point, and is sent to processor by many groups fault detector, can determine various faults type and multiple fault section.
P1 group fault detector, P2 group fault detector, P3 group fault detector and P4 group fault detector can be the fault detector of clock synchronous, like this, the positional information at testing result and fault detector place synchronously can be sent to the central station of intelligent distribution network by these fault detectors.The cycle that fault detector sends testing result can be arranged arbitrarily, and such as, its cycle can be 5 minutes, namely can send one-time detection result and positional information to the central station of intelligent distribution network every 5 minutes fault detectors.The cycle of the transmission testing result of fault detector is shorter, and its result detected is more accurate.The central station of intelligent distribution network is after the testing result receiving fault detector transmission and positional information, and can be out of order by the automatic decision detecting analysis software type and fault section.The central station of intelligent distribution network, after judging fault type and fault section, can trigger hummer etc. and produce alerting signal.The warning time duration of alerting signal can be arranged arbitrarily.Such as, warning time duration can be set to 3 minutes.
Such as, suppose by detecting analysis software, the central station of intelligent distribution network finds that the detection electric current of P1C fault detector and P3C fault detector is undergone mutation, and there is not obvious change in the detection electric current of other fault detectors, then can judge that this fault type is C phase singlephase earth fault, and the interval of fault is between P3C fault detector and P4C fault detector.If daytime, P1C fault detector and P3C fault detector can make board turning instruction, and such as, it can be turned to red card by person who is not a member of any political party.If night, P1C fault detector and P3C fault detector can make flashing light instruction, and flicker frequency can be 1 time/second.
Again such as, suppose by detecting analysis software, the central station of intelligent distribution network finds that the detection electric current of P1C fault detector, P3C fault detector, P1B fault detector and P3B fault detector is undergone mutation, and there is not obvious change in the detection electric current of other indicators, then can judge that this fault type is, between B phase and C phase, phase fault occurs, and this fault section is between P3B fault detector and P4B fault detector and between P3C fault detector and P4C fault detector.If daytime, P1C fault detector and P3C fault detector and P1B fault detector and P3B fault detector can make board turning instruction, and such as, it can be turned to red card by person who is not a member of any political party.If night, P1C fault detector and P3C fault detector and P1B fault detector and P3B fault detector can make flashing light instruction, and flicker frequency can be 2 times/second.
In an embodiment of the present invention, the central station of intelligent distribution network, after judging fault type and fault section, can also send note to one or more phone number to notify breakdown repair personnel fault type and failure message.After having rushed to repair line fault or be complete to circuit power transmission, the mode that can be arranged online by processor or make fault detector involution by telepilot.
In an embodiment of the present invention, reach automatic decision overhead transmission line fault type and fault section and automatically produce alerting signal and send the effect of failure message to one or more phone number pre-set.
As can be seen from the above description, according to embodiments of the invention, reach the effect that effectively can shorten the breakdown repair time by adopting wireless communication unit.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. an overhead transmission line accident indicator, is characterized in that, comprising:
Fault detector, described fault detector comprises Fisrt fault indicator and the second fault detector, described Fisrt fault indicator and described second fault detector are arranged in the same phase line of described overhead transmission line, and described Fisrt fault indicator and described second fault detector are respectively used to the failure message detecting and send present position; And
Processor, for receiving the described failure message of described Fisrt fault indicator and described second fault detector transmission, and determines the fault section of described phase line according to the described failure message that described Fisrt fault indicator and described second fault detector send.
2. overhead transmission line accident indicator according to claim 1, is characterized in that, described fault detector comprises:
First group of fault detector, is separately positioned on the first-phase circuit of described overhead transmission line;
Second group of fault detector, is separately positioned on the second-phase circuit of described overhead transmission line; And
3rd group of fault detector, is separately positioned on the third phase circuit of described overhead transmission line.
3. overhead transmission line accident indicator according to claim 1, is characterized in that, described fault detector comprises:
4th group of fault detector, is separately positioned on the primary importance of the three-phase phase line of described overhead transmission line; And
5th group of fault detector, is separately positioned on the second place of the three-phase phase line of described overhead transmission line.
4. overhead transmission line accident indicator according to claim 3, is characterized in that,
Described 4th group of fault detector is separately positioned on the primary importance of the three-phase phase line of the backbone of described overhead transmission line,
Described 5th group of fault detector is separately positioned on the second place of the three-phase phase line of the backbone of described overhead transmission line,
Wherein, described primary importance and described second place interval predeterminable range on the bearing of trend of the backbone of described overhead transmission line.
5. overhead transmission line accident indicator according to claim 3, is characterized in that, described overhead transmission line comprises backbone and is connected the first branch line by described backbone,
Described 4th group of fault detector is separately positioned on the primary importance of the three-phase phase line of described first branch line of described overhead transmission line,
Described 5th group of fault detector is separately positioned on the second place of the three-phase phase line of described first branch line of described overhead transmission line,
Wherein, the second place of the primary importance of the three-phase phase line of described first branch line and the three-phase phase line of described first branch line interval predeterminable range on the bearing of trend of described first branch line.
6. overhead transmission line accident indicator according to claim 3, is characterized in that, described overhead transmission line comprises backbone and is connected the first branch line of and the second branch line with by described backbone,
Described 4th group of fault detector is separately positioned on the primary importance of the three-phase phase line of described first branch line of described overhead transmission line, and
Described 5th group of fault detector is separately positioned on the primary importance of the three-phase phase line of described second branch line of described overhead transmission line.
7. overhead transmission line accident indicator according to claim 3, is characterized in that, described overhead transmission line comprises backbone and is connected the branch line by described backbone,
Described 4th group of fault detector, is separately positioned on the primary importance of the three-phase phase line of the backbone of described overhead transmission line, and
Described 5th group of fault detector, is separately positioned on the primary importance of the three-phase phase line of the branch line of described overhead transmission line.
8. overhead transmission line accident indicator according to claim 1, is characterized in that, also comprise:
First isolating switch, is arranged on the first-phase circuit of the backbone of described overhead transmission line;
Second isolating switch, is arranged on the second-phase circuit of the backbone of described overhead transmission line;
3rd isolating switch, is arranged on the third phase circuit of the backbone of described overhead transmission line;
4th isolating switch, is arranged on the first-phase circuit of the first branch line of described overhead transmission line;
5th isolating switch, is arranged on the second-phase circuit of the first branch line of described overhead transmission line; And
6th isolating switch, is arranged on the third phase circuit of the first branch line of described overhead transmission line.
9. overhead transmission line accident indicator according to claim 1, is characterized in that, described fault detector comprises:
Sensor, described sensor setting is inner at described fault detector, for detecting described failure message, described sensor is current sensor, and described current sensor comprises the first current sensor for detecting phase fault and the second current sensor for detecting singlephase earth fault; And
Communication unit, described communication unit is connected with described sensor, for sending the described failure message that described sensor detects.
10. overhead transmission line accident indicator according to claim 9, is characterized in that, described fault detector also comprises:
Indicating fault mechanism, be connected with described communication unit, be used to indicate described failure message, described indicating fault mechanism is annunciator and signal lamp, described annunciator is be used to indicate normal first annunciator of described overhead transmission line and for indicating the secondary signal board of described failure message by day, described signal lamp is the signal lamp for indicating described failure message at night.
11. overhead transmission line accident indicators according to claim 9, it is characterized in that, described fault detector also comprises:
Electric capacity or battery, be arranged in the power circuit of described fault detector, for providing power supply for described signal lamp; And
Electricity-fetching module, is arranged in described power circuit, thinks that described fault detector provides power supply for obtaining energy from the external world.
12. overhead transmission line accident indicators according to claim 9, is characterized in that, described communication unit is wireless communication unit, and described wireless communication unit comprises:
Sending module, for sending the described failure message that described current sensor detects; And
Receiver module, for receiving the control command that described processor sends.
13. overhead transmission line accident indicators according to claim 9, it is characterized in that, described fault detector also comprises: digital signal acquiring unit, described digital signal acquiring unit is arranged between described sensor and described communication unit, samples for the described failure message detected described sensor.
14. overhead transmission line accident indicators according to claim 9, it is characterized in that, described fault detector also comprises: clock synchronization unit, for the clock synchronous of multiple described fault detector.
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| CN107966629A (en) * | 2017-12-19 | 2018-04-27 | 广东电网有限责任公司韶关供电局 | A kind of line fault point detection device |
| CN107966634A (en) * | 2017-12-19 | 2018-04-27 | 广东电网有限责任公司韶关供电局 | A kind of line fault point positioning system and its localization method |
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| CN115798162A (en) * | 2022-11-21 | 2023-03-14 | 国网安徽省电力有限公司郎溪县供电公司 | Alarm for warning fault of overhead line in live state |
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| CN115798162A (en) * | 2022-11-21 | 2023-03-14 | 国网安徽省电力有限公司郎溪县供电公司 | Alarm for warning fault of overhead line in live state |
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