CN204789789U - Distribution cable running state monitoring devices - Google Patents
Distribution cable running state monitoring devices Download PDFInfo
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- CN204789789U CN204789789U CN201520402475.3U CN201520402475U CN204789789U CN 204789789 U CN204789789 U CN 204789789U CN 201520402475 U CN201520402475 U CN 201520402475U CN 204789789 U CN204789789 U CN 204789789U
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Abstract
The utility model provides a distribution cable running state monitoring devices, go up the split iron core transducer of optional position including the cover along the line at distribution cable, reach the embedded system host computer rather than linking to each other, still include the pulse current sensor that links to each other with the embedded system host computer, pulse current sensor cover is on distribution cable's bonding line, the induced -current of split iron core transducer output supplies power for the embedded system host computer after the rectifier circuit rectification, still include the temperature detection circuit who links to each other with the embedded system host computer. Do not need extra power to supply power for the embedded system host computer, convenient open -air detection to distribution cable running state, can get the electricity in distribution cable's optional position, guarantee that monitoring devices carries out on -line monitoring steadily or carries out the monitoring of several weeks or several days mobilely.
Description
Technical field
The utility model relates to a kind of distribution cable monitoring running state device, particularly relates to a kind of field of electrical equipment distribution cable monitoring running state device.
Background technology
Distribution cable is the important component part of distribution network, and electric power enterprise carries out the status monitoring work of cable to guarantee its safe operation.
Current, electric power enterprise adopts the method for itinerant monitor system to measure the state of insulation of cable usually.In transformer station, usually all provide external AC power supply, there is not the problem that monitoring system is powered.But, under many circumstances, the connector of cable or terminal are all on the road of city or suburb, obtaining external AC power supply is monitoring system difficulty when powering, the long-term on-line monitoring how carrying out cable easily or the short-term of fluidly carrying out several days or a few time-of-weeks are monitored continuously, become the difficult problem that always could not thoroughly solve.
In recent years, along with electricity marketization is carried out by country, power supply enterprise was forced fully to excavate the potential transport capacity of power cable.Therefore, the monitoring of cable Warm status is carried out gradually in electric power enterprise.Carrying out except running into power shortage outlying similar in the work of state of insulation field monitoring in process, also having a difficult problem to be the current information of how to avoid drawing longer signal wire from current transformer and obtaining three core distribution cables easily.
To sum up can learn, current exploitation has self-powered ability, and can simultaneously the electricity condition of monitoring cable and the monitoring system of Warm status are problems in the urgent need to address during current power enterprise produces easily.
Utility model content
The technical problems to be solved in the utility model is to provide one does not need independent power supply, and does not need the distribution cable monitoring running state device of drawing longer signal wire from current transformer.
The technical solution adopted in the utility model is as follows: a kind of distribution cable monitoring running state device, is characterized in that, comprises and is enclosed within the Split type iron core transducer that distribution cable goes up optional position along the line, and coupled embedded system main frame; Also comprise the pulses of current sensor be connected with embedded system main frame; Described pulses of current sensor is enclosed within the bonding line of distribution cable; The induction current that described Split type iron core transducer exports is embedded system host supplying power after rectifier circuit rectifies; Also comprise the temperature measurement circuit be connected with embedded system main frame.
As preferably, described temperature measurement circuit comprises thermal resistance sensor and conditioning amplifying circuit thereof; Described thermal resistance sensor is close to tested cable surface.
As preferably, described conditioning amplifying circuit is integrated in described embedded system main frame.
As preferably, described Split type iron core transducer comprises: insulation crust, and two or more is uniformly set at the iron core in insulation crust groove, and with iron core supporting corresponding winding one by one; The end of described all windings links together as an output port of Split type iron core transducer, the output port of a first section of correspondence Split type iron core transducer of described each winding.
As preferably, described rectification circuit comprises: commutation diode group more than two, prime filter capacitor, and rear class filter capacitor; Often organize commutation diode group and comprise the first diode and the second diode; The anode of described first diode is connected with the negative electrode of the second diode; Described first diode negative electrode be connected with an output port of rectification circuit; The anode of described second diode is connected with another output port of rectification circuit; Rear class filter capacitor is connected with between two output ports of rectification circuit; Line between described two diodes often organizing commutation diode group, each output port of the Split type iron core transducer corresponding with first section of described each winding, one_to_one corresponding is connected; The output port correspondence that the end of described all windings links together is connected to the line of rectification circuit, respectively by line prime filter capacitor separately between two diodes often organizing commutation diode group, be connected to often organize commutation diode group two diodes between line.
As preferably, described Split type iron core transducer comprises: insulation crust, A phase iron core and winding thereof, B phase iron core and winding thereof, and C phase iron core and winding thereof; Described A, B and C tri-phase iron core is evenly arranged in the groove of insulation crust; The winding ends of A, B and C tri-phase iron core links together, and accesses a pin of Split type iron core transducer output port; The winding head end separately of A, B and C tri-phase iron core is connected to other three pins of described Split type iron core transducer output port.
As preferably, described rectification circuit comprises the input port be connected with described Split type iron core transducer output port, three prime filter capacitors, commutation diode, rear class filter capacitor, and rectification circuit output end mouth; Described commutation diode comprises the first diode Q1, the 3rd diode Q3 and the 5th diode Q5 that negative electrode is connected, the second diode Q2, the 4th diode Q4 and the 6th diode Q6 that anode is connected; The anode of described first diode Q1 is connected with the negative electrode of the second diode Q2, and the anode of described 3rd diode Q3 is connected with the negative electrode of the Q4 of the 4th diode, and the anode of described 5th diode Q5 is connected with the negative electrode of the 6th diode Q6; Wherein three pins of described rectification circuit input end mouth connect one to one between the first diode Q1 and the second diode Q2, between the 3rd diode Q3 and the 4th diode Q4, and between the 5th diode Q5 and the 6th diode Q6 respectively; Wherein three pins of described Split type iron core transducer output port are connected with the 4th pin of rectification circuit input end mouth respectively by a prime filter capacitor; Other three pins of described Split type iron core transducer output port are connected with wherein three pin one_to_one corresponding of described rectification circuit input end mouth; One of them pin of described Split type iron core transducer output port is corresponding with the 4th pin of described rectification circuit input end mouth to be connected; Be connected with rear class filter capacitor between the negative electrode of described 5th diode Q5 and the anode of the 6th diode Q6, the two ends of described rear class filter capacitor are connected to again between two pins of rectification circuit output end mouth.
As preferably, the BNC connector that described pulses of current sensor comprises sensor outer housing, ferrite, coil winding, integrating resistor and is connected with embedded system main frame; Described coil winding all has coiling on the ferrite, and winding ends gets back to winding head end through winding, is formed and returns circle, and first section of winding is connected with two pins that end corresponds respectively to BNC, connects described integrating resistor between two pins of described BNC.
As preferably, the insulation crust of described Split type iron core transducer is hatch frame, and the iron core relative with insulation crust opening part is similarly hatch frame, facilitate Split type iron core transducer to snap in be enclosed within distribution cable along the line on; Described pulses of current sensor shell and ferrite are hatch frame, and described coil winding is wound on wherein on half ferrite.
As preferably, described Split type iron core transducer and pulses of current sensor are loop configuration.
Compared with prior art, the beneficial effects of the utility model are: do not need extra power supply to be embedded system host supplying power, facilitate field to the detection of distribution cable running status; In the optional position power taking of distribution cable, can ensure that monitoring device stably carries out on-line monitoring or fluidly carries out the monitoring of a few week or several days.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the utility model wherein embodiment.
Fig. 2 be embodiment illustrated in fig. 1 in the structural representation of Split type iron core transducer.
Fig. 3 is the structural representation of middle rectification circuit embodiment illustrated in fig. 1.
Fig. 4 is the structural representation of middle pulses of current sensor embodiment illustrated in fig. 1.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Arbitrary feature disclosed in this instructions (comprising any summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
In this specific embodiment, be specifically described for three core distribution cable monitoring running states.
A kind of distribution cable monitoring running state device as shown in Figure 1, comprises the Split type iron core transducer 14 being enclosed within distribution cable 11 upper optional position along the line, and coupled embedded system main frame 13; Also comprise the pulses of current sensor 17 be connected with embedded system main frame 13; Described pulses of current sensor is enclosed within the bonding line 12 of distribution cable; The induction current that described Split type iron core transducer 14 exports is embedded system host supplying power after rectification circuit 15 rectification; Also comprise the temperature measurement circuit 16 be connected with embedded system main frame 13.Warm status and the electricity condition of tested cable can be monitored simultaneously, better can assess the state of cable, from three core distribution cable optional position induction power takings, the convenience of detection can be improve, guarantee power supply reliability and stability.
In this specific embodiment, described temperature measurement circuit 16 comprises thermal resistance sensor and conditioning amplifying circuit thereof; Described thermal resistance sensor is close to tested cable surface.Described conditioning amplifying circuit is integrated in described embedded system main frame 13.
Described Split type iron core transducer comprises insulation crust, and two or more (be three in this specific embodiment, circularize structure, each group is apart from 120 degree) is uniformly set at the iron core in insulation crust groove, and with iron core supporting corresponding winding one by one.Described rectification circuit comprises (being three groups in this specifically embodiment) more than two commutation diode group, prime filter capacitor, and rear class filter capacitor.
As shown in Figure 2, in this specific embodiment, described Split type iron core transducer is loop configuration, comprising: insulation crust 21, A phase iron core 22 and winding 25, B phase iron core 23 thereof and winding 26 thereof, and C phase iron core 24 and winding 27 thereof; Described A, B and C tri-phase iron core is evenly arranged in the groove of insulation crust; The winding ends of A, B and C tri-phase iron core links together, and accesses a pin of Split type iron core transducer output port 28; The winding head end separately of A, B and C tri-phase iron core is connected to other three pins of described Split type iron core transducer output port.In this concrete enforcement, the three-phase induction electric current that described Split type iron core transducer exports, through rectifier circuit rectifies, is embedded system host supplying power.
As shown in Figure 3, corresponding with Fig. 2, described rectification circuit comprises the input port 31 be connected with described Split type iron core transducer output port, three prime filter capacitor 32(are Y capacitance in this specific embodiment), commutation diode, rear class filter capacitor, and rectification circuit output end mouth 34; Described commutation diode comprises the first diode Q1, the 3rd diode Q3 and the 5th diode Q5 that negative electrode is connected, the second diode Q2, the 4th diode Q4 and the 6th diode Q6 that anode is connected; The anode of described first diode Q1 is connected with the negative electrode of the second diode Q2, and the anode of described 3rd diode Q3 is connected with the negative electrode of the Q4 of the 4th diode, and the anode of described 5th diode Q5 is connected with the negative electrode of the 6th diode Q6; Wherein three pins of described rectification circuit input end mouth connect one to one between the first diode Q1 and the second diode Q2, between the 3rd diode Q3 and the 4th diode Q4, and between the 5th diode Q5 and the 6th diode Q6 respectively; Wherein three pins of described Split type iron core transducer output port are connected with the 4th pin of rectification circuit input end mouth respectively by a prime filter capacitor; Other three pins of described Split type iron core transducer output port are connected with wherein three pin one_to_one corresponding of described rectification circuit input end mouth; One of them pin of described Split type iron core transducer output port is corresponding with the 4th pin of described rectification circuit input end mouth to be connected; Be connected with rear class filter capacitor between the negative electrode of described 5th diode Q5 and the anode of the 6th diode Q6, the two ends of described rear class filter capacitor are connected to again between two pins of rectification circuit output end mouth.
In this specific embodiment, the insulation crust of described Split type iron core transducer is hatch frame, the iron core relative with insulation crust opening part is similarly hatch frame (in this specific embodiment for B phase iron core), facilitate Split type iron core transducer to snap in be enclosed within distribution cable along the line on.During power taking, Split type transducer is snapped in distribution cable from opening part, be sleeved on distribution cable along the line on.
In this specific embodiment, the output port 28 of described Split type iron core transducer adopts Aviation Connector; The input port 31 of described rectification circuit adopts Aviation Connector; The output port 34 of described rectification circuit adopts aviation plug; Described rectification circuit adopts insulation crust.
Split type iron core transducer enclosure 21, rectification circuit shell 36 and pulses of current sensor shell 41 all adopt epoxide resin material to make, its dielectric strength is not less than 35kV, there is higher dielectric level, ensure that security when user of service operates this monitoring device.
The BNC connector 45 that described pulses of current sensor 17 comprises sensor outer housing 41, ferrite 42, coil winding 43, integrating resistor 44 and is connected with embedded system main frame; Coiling is on the ferrite equably for described coil winding 43, winding ends gets back to winding head end through winding, formation returns circle, and first section of winding is connected with two pins that end corresponds respectively to BNC connector, connects described integrating resistor 44 between two pins of described BNC connector.
In this specific embodiment, described integrating resistor 44 is noninductive resistance.
Described pulses of current sensor shell and ferrite are hatch frame, and described coil winding is wound on wherein on half ferrite, facilitates pulses of current sensor to snap in and is enclosed within bonding line.
Described Split type iron core transducer and pulses of current sensor are loop configuration.
This monitoring device adopts Split type core structure dexterously, solves the difficult problem recovered energy from three core distribution cables innovatively; Adopt temperature and high-frequency current sensing technology, complete the monitoring of cable heat and electric comprehensive state simultaneously; Adopt low energy consumption embedded technology, reach the minimized object of system energy consumption.The monitoring device be made up of above hardware function units, have manufacture economical, convenient, use safety be installed, be easy to the feature safeguarded, achieve the distribution cable comprehensive state on-line monitoring with self-powered ability.
Claims (10)
1. a distribution cable monitoring running state device, is characterized in that, comprises and is enclosed within the Split type iron core transducer that distribution cable goes up optional position along the line, and coupled embedded system main frame; Also comprise the pulses of current sensor be connected with embedded system main frame; Described pulses of current sensor is enclosed within the bonding line of distribution cable; The induction current that described Split type iron core transducer exports is embedded system host supplying power after rectifier circuit rectifies; Also comprise the temperature measurement circuit be connected with embedded system main frame.
2. distribution cable monitoring running state device according to claim 1, is characterized in that, described temperature measurement circuit comprises thermal resistance sensor and conditioning amplifying circuit thereof; Described thermal resistance sensor is close to tested cable surface.
3. distribution cable monitoring running state device according to claim 2, is characterized in that, described conditioning amplifying circuit is integrated in described embedded system main frame.
4. distribution cable monitoring running state device according to claim 1, it is characterized in that, described Split type iron core transducer comprises: insulation crust, and two or more is uniformly set at the iron core in insulation crust groove, and with iron core supporting corresponding winding one by one; The end of described all windings links together as an output port of Split type iron core transducer, the output port of a first section of correspondence Split type iron core transducer of described each winding.
5. distribution cable monitoring running state device according to claim 4, it is characterized in that, described rectification circuit comprises: commutation diode group more than two, prime filter capacitor, and rear class filter capacitor; Often organize commutation diode group and comprise the first diode and the second diode; The anode of described first diode is connected with the negative electrode of the second diode; Described first diode negative electrode be connected with an output port of rectification circuit; The anode of described second diode is connected with another output port of rectification circuit; Rear class filter capacitor is connected with between two output ports of rectification circuit; Line between described two diodes often organizing commutation diode group, each output port of the Split type iron core transducer corresponding with first section of described each winding, one_to_one corresponding is connected; The output port correspondence that the end of described all windings links together is connected to the line of rectification circuit, respectively by line prime filter capacitor separately between two diodes often organizing commutation diode group, be connected to often organize commutation diode group two diodes between line.
6. distribution cable monitoring running state device according to claim 5, is characterized in that, described Split type iron core transducer comprises: insulation crust, A phase iron core and winding thereof, B phase iron core and winding thereof, and C phase iron core and winding thereof; Described A, B and C tri-phase iron core is evenly arranged in the groove of insulation crust; The winding ends of A, B and C tri-phase iron core links together, and accesses a pin of Split type iron core transducer output port; The winding head end separately of A, B and C tri-phase iron core is connected to other three pins of described Split type iron core transducer output port.
7. distribution cable monitoring running state device according to claim 6, is characterized in that, described rectification circuit comprises the input port be connected with described Split type iron core transducer output port, three prime filter capacitors, commutation diode, rear class filter capacitor, and rectification circuit output end mouth; Described commutation diode comprises the first diode Q1, the 3rd diode Q3 and the 5th diode Q5 that negative electrode is connected, the second diode Q2, the 4th diode Q4 and the 6th diode Q6 that anode is connected; The anode of described first diode Q1 is connected with the negative electrode of the second diode Q2, and the anode of described 3rd diode Q3 is connected with the negative electrode of the Q4 of the 4th diode, and the anode of described 5th diode Q5 is connected with the negative electrode of the 6th diode Q6; Wherein three pins of described rectification circuit input end mouth connect one to one between the first diode Q1 and the second diode Q2, between the 3rd diode Q3 and the 4th diode Q4, and between the 5th diode Q5 and the 6th diode Q6 respectively; Wherein three pins of described Split type iron core transducer output port are connected with the 4th pin of rectification circuit input end mouth respectively by a prime filter capacitor; Other three pins of described Split type iron core transducer output port are connected with wherein three pin one_to_one corresponding of described rectification circuit input end mouth; One of them pin of described Split type iron core transducer output port is corresponding with the 4th pin of described rectification circuit input end mouth to be connected; Be connected with rear class filter capacitor between the negative electrode of described 5th diode Q5 and the anode of the 6th diode Q6, the two ends of described rear class filter capacitor are connected to again between two pins of rectification circuit output end mouth.
8. distribution cable monitoring running state device according to claim 1, is characterized in that, the BNC connector that described pulses of current sensor comprises sensor outer housing, ferrite, coil winding, integrating resistor and is connected with embedded system main frame; Described coil winding all has coiling on the ferrite, and winding ends gets back to winding head end through winding, is formed and returns circle, and first section of winding is connected with two pins that end corresponds respectively to BNC, connects described integrating resistor between two pins of described BNC.
9. according to the distribution cable monitoring running state device one of claim 4 to 6 Suo Shu, it is characterized in that, the insulation crust of described Split type iron core transducer is hatch frame, the iron core relative with insulation crust opening part is similarly hatch frame, facilitate Split type iron core transducer to snap in be enclosed within distribution cable along the line on.
10. distribution cable monitoring running state device according to claim 8, is characterized in that, described pulses of current sensor shell and ferrite are hatch frame, and described coil winding is wound on wherein on half ferrite.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520402475.3U CN204789789U (en) | 2015-06-12 | 2015-06-12 | Distribution cable running state monitoring devices |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520402475.3U CN204789789U (en) | 2015-06-12 | 2015-06-12 | Distribution cable running state monitoring devices |
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| CN204789789U true CN204789789U (en) | 2015-11-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044571A (en) * | 2015-07-10 | 2015-11-11 | 西安交通大学 | Distribution cable comprehensive condition online monitoring system and method with self-powered function |
| CN106092257A (en) * | 2016-08-08 | 2016-11-09 | 河南开启电力实业有限公司 | Transforming plant main transformer liquid level on-line checking early warning system |
| CN113746214A (en) * | 2021-08-31 | 2021-12-03 | 西安交通大学 | Power supply circuit for three-core cable thermal state online monitoring system |
-
2015
- 2015-06-12 CN CN201520402475.3U patent/CN204789789U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044571A (en) * | 2015-07-10 | 2015-11-11 | 西安交通大学 | Distribution cable comprehensive condition online monitoring system and method with self-powered function |
| CN106092257A (en) * | 2016-08-08 | 2016-11-09 | 河南开启电力实业有限公司 | Transforming plant main transformer liquid level on-line checking early warning system |
| CN113746214A (en) * | 2021-08-31 | 2021-12-03 | 西安交通大学 | Power supply circuit for three-core cable thermal state online monitoring system |
| CN113746214B (en) * | 2021-08-31 | 2024-05-07 | 西安交通大学 | Power supply circuit for three-core cable thermal state on-line monitoring system |
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