CN209148816U - Multiterminal wireless telecommunications partial discharge detecting system - Google Patents
Multiterminal wireless telecommunications partial discharge detecting system Download PDFInfo
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- CN209148816U CN209148816U CN201821658920.2U CN201821658920U CN209148816U CN 209148816 U CN209148816 U CN 209148816U CN 201821658920 U CN201821658920 U CN 201821658920U CN 209148816 U CN209148816 U CN 209148816U
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- partial discharge
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- multiterminal
- collector
- divider resistance
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Abstract
The utility model discloses a kind of multiterminal wireless telecommunications partial discharge detecting systems, are related to cable partial discharge system regions.There are problems in terms of synchronizing partial discharge for existing local discharge test equipment: 1, cable distance is longer, and partial discharge measurement point is relatively more, it is difficult to complete measurement at the appointed time；2, partial discharge measurement point environment is complicated, and measurement nearby has many dangerous factors.The utility model includes the information processing unit that the collector being connected with route and collector are connected by communication, and multiple collectors on a route constitute collector group, and collector group is connected by wireless communication module with information processing unit.By the way that multiple collector independent acquisition signals are arranged on the line, due to each collector independent acquisition and transmission signal, mutually it is independent of each other, and information processing unit can receive multiple wireless Partial discharge signals simultaneously, independent analysis processing is carried out, has been conveniently realized to the synchronous partial discharge detection of the multiterminal of long-distance cable route.
Description
Technical field
The utility model relates to cable partial discharge system regions more particularly to multiterminal wireless telecommunications partial discharge detecting systems.
Background technique
Currently, urban construction is accelerated, land resource is in short supply, and cable is using more more and more universal, or even individual city stations whole station
Outlet is all made of cable.Cable examination item only has major insulation, major insulation pressure resistance, outer jacket test, ground resistance, attachment originally
Test etc..
Cable section defect is not developed to breakdown in handover pressure resistance 60 minutes, needs to increase test item.
The main examination item development process of ac cable major insulation uses DC break down voltage, due to ac cable electric field in early days
It is capacitance profile, is not into distribution of resistance, examines electric field distribution of resistance since directly pressure resistance is main, it can not limited examination alternating current
Cable.The development of variable-frequency power sources promotes the formation of large capacity ac voltage withstanding instrument, and it is effective to start within 2004 universal cable ac voltage withstanding
Promote to examine the pressure resistance of ac cable.But local non-through defect can not be solved.The development of cable partial discharge test macro,
Promote the formation of domestic regulation, and pilot project is increased to on-site cable, more guarantees the safe operation of cable.
Long-distance cable is increasingly becoming the trend of later city cable, and existing local discharge test equipment is synchronizing partial discharge
Aspect exists obvious insufficient: 1, cable distance is longer, and partial discharge measurement point is relatively more, it is difficult to complete measurement at the appointed time；2,
Partial discharge measurement point environment is complicated, and measurement nearby has many dangerous factors.
Utility model content
The technical problems to be solved in the utility model and the technical assignment of proposition be prior art is carried out improve with
It improves, multiterminal wireless telecommunications partial discharge detecting system is provided, to realize the synchronous partial discharge detection purpose of long-distance cable multiterminal.For this purpose,
The utility model takes following technical scheme.
Multiterminal wireless telecommunications partial discharge detecting system, including the collector being connected with route, the letter being connected by communication with collector
Processing unit is ceased, multiple collectors on a route constitute collector group, and collector group passes through wireless communication module and letter
Processing unit is ceased to be connected.It is transmitted by the way that multiple collector independent acquisition signals are arranged on the line, and by wireless communication module
It carries out concentrating analysis processing to information processing unit, due to each collector independent acquisition and transmission signal, mutually be independent of each other, and
Information processing unit can receive multiple wireless Partial discharge signals simultaneously, carry out independent analysis processing, conveniently realized to it is long away from
The synchronous partial discharge detection of multiterminal from cable run.
As further improving and supplementing to above-mentioned technical proposal, the utility model further includes that following supplementary technology is special
Sign.
As optimization technique means:
The collector includes for acquiring the current transformer of signal, for carrying out effectively to the voltage signal of acquisition
Conversion follow preposition operational amplifier circuit, for provide stablize output driving circuit, the input of the preposition operational amplifier circuit
End is connected with the output end of current transformer, and the output end of preposition operational amplifier circuit is connected with the output end of driving circuit.Effectively
It realizes the acquisition of current signal and stablizes output.
The wireless communication module includes E/O converting unit, 4G transmission line, O/E converting unit, driving circuit it is defeated
Outlet is connected with E/O converting unit input terminal；The O/E converting unit output end is connected with information processing unit output end.
4G transmission mode is not limited by region, environment, distance, can be simutaneously arranged on the route of long range.
The information processing unit includes operational amplifier circuit, host, and the input terminal and O/E converting unit of operational amplifier circuit export
End is connected, and the output end of operational amplifier circuit is connected with host.Signal is handled by operational amplifier circuit after wireless receiving and passes to master again
Machine can effectively realize the reduction and analysis processing of signal, and signal stabilization is good, and clarity is high.
The preposition operational amplifier circuit includes the divider resistance R1 for partial pressure, divider resistance R2, is connected with divider resistance
The Voltage Feedback operational amplifier for being used to form stable voltage follow, the output end of Voltage Feedback operational amplifier and driving
Circuit input end is connected.By partial pressure and Voltage Feedback effect, forms stable voltage follower circuit and be output to driving circuit.
The resistance value of the divider resistance R1, divider resistance R2 and be 50 Ω.Partial pressure effect can be effectively realized.
The driving circuit includes divider resistance R3, divider resistance R4, power supply chip, amplifier and optical coupling isolator,
Described one end divider resistance R4 is connected with power supply chip, and the other end is connected with the one end divider resistance R3 and amplifier in,
The other end of divider resistance R3 is connected with Voltage Feedback operational amplifier output terminal, the optical coupling isolator input terminal and amplification
Device output end is connected, and the output end of the optical coupling isolator is connected with wireless communication module.Input letter can be effectively realized
Number stabilization and amplification pre-bias voltage is provided by R3, R4 divider resistance, power supply chip noise is small, precision is high, input
Signal can be realized precise and stable amplification and output.
The utility model has the advantages that by the way that multiple collector independent acquisition signals are arranged on the line, and pass through 4G wireless communication module
It passes to information processing unit to carry out concentrating analysis processing, due to each collector independent acquisition and transmission signal, mutually not shadow
It rings, and information processing unit can receive multiple wireless Partial discharge signals simultaneously, carry out independent analysis processing, conveniently realize pair
The synchronous partial discharge detection of the multiterminal of long-distance cable route;4G transmission mode is not limited by region, environment, distance, can be simultaneously
It is arranged on the route of long range;Signal stabilization is reliable, and clarity is high.
Detailed description of the invention
Fig. 1 is Tthe utility model system schematic layout pattern.
Fig. 2 is Tthe utility model system schematic illustration.
Fig. 3 is the preposition operational amplifier circuit schematic diagram of the utility model.
Fig. 4 is the utility model drive circuit schematic diagram.
In figure: 1- collector；2- wireless communication module；3- information processing unit；4- route；The preposition operational amplifier circuit of 101-；
102- driving circuit；301- operational amplifier circuit；302- host.
Specific embodiment
The technical solution of the utility model is described in further detail below in conjunction with Figure of description.
As shown in Figure 1, multiterminal wireless telecommunications partial discharge detecting system, including the collector 1 being connected with route 4 and collector 1
The information processing unit 3 being connected by communication, multiple collectors 1 on a route 4 constitute 1 group of collector, and 1 group of collector passes through
Wireless communication module 2 is connected with information processing unit 3.
As shown in Fig. 2, collector 1 includes for acquiring signal in order to effectively realize the acquisition of signal and stablize output
Current transformer, for effectively converting the preposition operational amplifier circuit 101 followed, for providing surely to the progress of the voltage signal of acquisition
Surely the input terminal of the driving circuit 102 exported, preposition operational amplifier circuit 101 is connected with the output end of current transformer, preposition amplifier
The output end of circuit 101 is connected with the output end of driving circuit 102.It effectively realizes the acquisition of current signal and stablizes output.
As shown in Fig. 2, in order not to be limited by region, environment, distance, wireless communication module 2 include E/O converting unit,
The output end of 4G transmission line 4, O/E converting unit, driving circuit 102 is connected with E/O converting unit input terminal；O/E conversion is single
First output end is connected with 3 output end of information processing unit.4G transmission mode is not limited by region, environment, distance, can be simultaneously
It is arranged on the route 4 of long range.
As shown in Fig. 2, information processing unit 3 includes fortune in order to effectively realize the reduction and analysis processing of realizing signal
Discharge road 301, host 302, the input terminal of operational amplifier circuit 301 is connected with O/E converting unit output end, operational amplifier circuit 301 it is defeated
Outlet is connected with host 302.Signal passes to host 302 by the processing of operational amplifier circuit 301 after wireless receiving again, can be effective
The reduction and analysis processing of signal are realized in ground, and signal stabilization is good, and clarity is high.
As shown in figure 3, preposition operational amplifier circuit 101 includes for dividing in order to realize stable voltage follower circuit output
Divider resistance R110101, divider resistance R210102, the electricity for being used to form stable voltage follow being connected with divider resistance
Press feedback operational amplifier 10103, divider resistance R110101, divider resistance R210102 resistance value and be 50 Ω, Voltage Feedback
The output end of operational amplifier 10103 is connected with 102 input terminal of driving circuit.Partial pressure can be effectively realized, by partial pressure and
Voltage Feedback effect, forms stable voltage follower circuit and is output to driving circuit 102.
As shown in figure 4, driving circuit 102 includes divider resistance in order to realize stable signal input and amplification output
R310201, divider resistance R410202, power supply chip 10204, amplifier 10203 and optical coupling isolator 10205, divider resistance
The one end R410202 is connected with power supply chip 10204, the other end and 10203 input terminal of the one end divider resistance R310201 and amplifier
It is connected, the other end of divider resistance R310201 is connected with 10103 output end of Voltage Feedback operational amplifier, optical coupling isolator
10205 input terminals are connected with 10203 output end of amplifier, output end and 2 phase of wireless communication module of optical coupling isolator 10205
Even.The stabilization and amplification that input signal can be effectively realized provide pre-bias voltage, power supply by R3, R4 divider resistance
10204 noise of chip is small, precision is high, and input signal can be realized precise and stable amplification and output.
As shown in figure 4, amplifier 10203 is OPA690, and the operating voltage of HFBR-1414 linear zone cannot in this example
Lower than 1.48V, in order to provide the pre-bias voltage for being more than 1.48V, Ui is input signal, chooses REF5030 as power supply chip
10204, noise is small, precision is high, R3, R4 divider resistance, provides the stable output greater than 1.48V for U0.
It is passed to by the way that multiple 1 independent acquisition signals of collector are arranged on route 4, and by 4G wireless communication module 2
Information processing unit 3 carries out concentrating analysis processing, due to each 1 independent acquisition of collector and transmission signal, is mutually independent of each other, and
Information processing unit 3 can receive multiple wireless Partial discharge signals simultaneously, carry out independent analysis processing, conveniently realized to it is long away from
The synchronous partial discharge detection of multiterminal from cable run 4.
Multiterminal wireless telecommunications partial discharge detecting system is specific embodiment of the utility model shown in figure 1 above -4,
The utility model in essence feature and progress are embodied, it can be right under the enlightenment of the utility model according to actual using needs
Its equivalent modifications for carrying out shape, structure etc., the column in the protection scope of this programme.
Claims (7)
1. multiterminal wireless telecommunications partial discharge detecting system, it is characterised in that: including the collector (1) being connected with route (4) and acquisition
The information processing unit (3) that device (1) is connected by communication, the multiple collectors (1) being set on a route (4) constitute collector (1) group,
Collector (1) group is connected by wireless communication module (2) with information processing unit (3).
2. multiterminal wireless telecommunications partial discharge detecting system according to claim 1, it is characterised in that: the collector (1)
Including for acquiring signal current transformer, for effectively converting the preposition amplifier followed to the progress of the voltage signal of acquisition
Circuit (101), the driving circuit (102) exported for providing stabilization, the input terminal and electricity of the preposition operational amplifier circuit (101)
The output end of current transformer is connected, and the output end of preposition operational amplifier circuit (101) is connected with the output end of driving circuit (102).
3. multiterminal wireless telecommunications partial discharge detecting system according to claim 2, it is characterised in that: the wireless telecommunications mould
Block (2) includes E/O converting unit, 4G transmission line (4), O/E converting unit, and the output end and E/O of driving circuit (102) are converted
Unit input terminal is connected；The O/E converting unit output end is connected with information processing unit (3) output end.
4. multiterminal wireless telecommunications partial discharge detecting system according to claim 3, it is characterised in that: the information processing apparatus
Setting (3) includes operational amplifier circuit (301), host (302), input terminal and the O/E converting unit output end phase of operational amplifier circuit (301)
Even, the output end of operational amplifier circuit (301) is connected with host (302).
5. multiterminal wireless telecommunications partial discharge detecting system according to claim 4, it is characterised in that: the preposition amplifier electricity
Road (101) includes the divider resistance R1(10101 for partial pressure), divider resistance R2(10102), being used for of being connected with divider resistance
Form the Voltage Feedback operational amplifier (10103) of stable voltage follow, the output of Voltage Feedback operational amplifier (10103)
End is connected with driving circuit (102) input terminal.
6. multiterminal wireless telecommunications partial discharge detecting system according to claim 5, it is characterised in that: the divider resistance R1
(10101), divider resistance R2(10102) resistance value and be 50 Ω.
7. multiterminal wireless telecommunications partial discharge detecting system according to claim 5, it is characterised in that: the driving circuit
(102) include divider resistance R3(10201), divider resistance R4(10202), power supply chip (10204), amplifier (10203) and
Optical coupling isolator (10205), the divider resistance R4(10202) one end is connected with power supply chip (10204), the other end with point
Piezoresistance R3(10201) one end and amplifier (10203) input terminal be connected, divider resistance R3(10201) the other end and voltage
Feedback operational amplifier (10103) output end is connected, optical coupling isolator (10205) input terminal and amplifier (10203)
Output end is connected, and the output end of the optical coupling isolator (10205) is connected with wireless communication module (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821658920.2U CN209148816U (en) | 2018-10-12 | 2018-10-12 | Multiterminal wireless telecommunications partial discharge detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821658920.2U CN209148816U (en) | 2018-10-12 | 2018-10-12 | Multiterminal wireless telecommunications partial discharge detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209148816U true CN209148816U (en) | 2019-07-23 |
Family
ID=67269175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821658920.2U Active CN209148816U (en) | 2018-10-12 | 2018-10-12 | Multiterminal wireless telecommunications partial discharge detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209148816U (en) |
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2018
- 2018-10-12 CN CN201821658920.2U patent/CN209148816U/en active Active
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