CN203772964U - Power distribution transformer grounding resistance anomaly remote alarm device - Google Patents
Power distribution transformer grounding resistance anomaly remote alarm device Download PDFInfo
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- CN203772964U CN203772964U CN201320743854.XU CN201320743854U CN203772964U CN 203772964 U CN203772964 U CN 203772964U CN 201320743854 U CN201320743854 U CN 201320743854U CN 203772964 U CN203772964 U CN 203772964U
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- 238000001514 detection method Methods 0.000 claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims description 24
- 230000003287 optical effect Effects 0.000 claims description 24
- 239000003381 stabilizer Substances 0.000 claims description 24
- 230000002159 abnormal effect Effects 0.000 claims description 21
- 238000004804 winding Methods 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000013307 optical fiber Substances 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000008054 signal transmission Effects 0.000 claims description 9
- 230000007935 neutral effect Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000000737 periodic effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The utility model discloses a power distribution transformer grounding resistance anomaly remote alarm device. The power distribution transformer grounding resistance anomaly remote alarm device includes a grounding resistance online detection circuit, a signal data calculation and judgment circuit, a remote alarm circuit and a power source circuit; the grounding resistance online detection circuit is connected with the signal data calculation and judgment circuit; the signal data calculation and judgment circuit is connected with the remote alarm circuit a; the remote alarm circuit is connected with a mobile phone of a distribution network power supplying management center or an operator on duty; and the power source circuit is connected with the signal data calculation and judgment circuit and the remote alarm circuit respectively. With the power distribution transformer grounding resistance anomaly remote alarm device adopted, once grounding resistance anomaly occurs, the grounding resistance anomaly will be immediately reported to the operator on duty, so that maintenance and repair can be performed; grounding device periodic overhaul in the past is avoided, and grounding device state overhaul is realized, and the labor intensity of workers can be reduced, and the unsafe factors of equipment can be decreased, and the reliability of power supplying can be improved, and social and enterprise benefits can be increased .
Description
Technical field
The utility model relates to distribution transformer earthing resistance, relates in particular to the abnormal remote alarming device of a kind of distribution transformer earthing resistance.
Background technology
At present, according to the requirement of electrical equipment grounding technical regulation, to jointly carry out protective ground and working earthing at 10kV substation transformer low-pressure side winding neutral point, shell, equipment frame.The object of ground connection: the one, in the time that human body touches the transformer case of electric leakage, can ensure personal safety and not be subject to shock hazard; The 2nd, when ground connection occurs low pressure phase line, protection can be moved tune lock in time, protection electric shock person's life security.
Because transformer grounding device is carried out cycled recondition regulation; namely the cycle is carried out maintainability test to earthing device according to the rules; so bury underground and change when insecure or earthing pole occurs to connect earthing device; make transformer grounding resistance value can not meet code requirement; often there is human body and touch phase line or because transformer case leaks electricity, electric shock accidents occurs, and can not get protection.
Utility model content
The purpose of this utility model is to provide the abnormal remote alarming device of a kind of distribution transformer earthing resistance, can carry out distant place warning to stake resistance abnormal signal in real time, improves power supply reliability.
The utility model adopts following technical proposals: the abnormal remote alarming device of a kind of distribution transformer earthing resistance, comprises that stake resistance calculates decision circuitry, distant place warning circuit and power circuit at line detection circuit, signal data; Described stake resistance connects described signal data at line detection circuit and calculates decision circuitry, signal data calculates decision circuitry and connects described distant place warning circuit, distant place warning circuit connects supplying power allocation administrative center or operator on duty's mobile phone, and described power circuit connects respectively signal data and calculates decision circuitry, distant place warning circuit.
Described stake resistance comprises distribution transformer earthing lead-in wire, a circular iron core, a winding at line detection circuit; Described distribution transformer earthing goes between through circular iron core, distribution transformer earthing lead-in wire upper end is connected on earth stud, described earth stud is substation transformer low-pressure side winding neutral point, shell, the common earth stud connecting of equipment frame, distribution transformer earthing lead-in wire lower end ground connection; Described winding is enclosed within on circular iron core, and two terminations of winding connect signal data and calculate decision circuitry.
Described signal data calculates decision circuitry and comprises monitor signal input circuit, signal conversion circuit, signal judging circuit and executive circuit; Monitor signal input circuit connects described signal conversion circuit, and signal conversion circuit connects described signal judging circuit, and signal judging circuit connects described executive circuit, and executive circuit connects described distant place warning circuit.
Described distant place warning circuit adopts wireless communication line, comprises stake resistance abnormal signal input circuit, Signal coding circuit and signal transmission circuit; Stake resistance abnormal signal input circuit connects described Signal coding circuit, and Signal coding circuit connects described signal transmission circuit; Signal transmission circuit is transmitted into stake resistance abnormal signal power distribution network power supply management center or operator on duty's mobile phone.
Described distant place warning circuit adopts optical fiber communication circuit, comprises optical fibre communication cable, optical transmitter and receiver circuit; Described optical transmitter and receiver circuit comprises optical transmission circuit, optical receiving circuit; Optical receiving circuit connects the executive circuit of signal data calculating decision circuitry, and optical receiving circuit connects optical transmission circuit by optical fibre communication cable, and optical transmission circuit connects supplying power allocation administrative center.
Described power circuit comprises the first voltage stabilizer and the second voltage stabilizer, the first termination of described the first voltage stabilizer connects this power distribution station step down side AC power phase line after being connected with the first capacitor one termination, the second termination of the first voltage stabilizer connects direct supply positive voltage terminal after being connected with the 3rd capacitor one termination, this power distribution station step down side AC power zero line after the 3rd termination of described the second voltage stabilizer is connected with the second capacitor one termination, the second termination of the second voltage stabilizer connects direct supply negative voltage side after being connected with the 4th capacitor one termination, the 3rd termination of the first voltage stabilizer respectively with the 3rd another termination of capacitor, another termination of the first capacitor, another termination of the second capacitor, the 4th another termination of capacitor, after connecting, the first termination of described the second voltage stabilizer connects direct supply generating positive and negative voltage for earth terminal, described direct supply just, negative voltage side connects respectively signal data and calculates decision circuitry, distant place warning circuit.
The utility model is for the deficiencies in the prior art, thereby provide a kind of design science, cost is low, reliability is high, can guarantee that again the distribution transformer earthing resistance of personal safety carries out on-line monitoring constantly, report to extremely immediately operator on duty and keep in repair once there is stake resistance; Can change earthing device cycled recondition in the past, and realize earthing device repair based on condition of component, reduce worker's labour intensity, reduce the unsafe factor of equipment, improve power supply reliability, increase the benefit of society and enterprise.
Brief description of the drawings
Fig. 1 is schematic block circuit diagram of the present utility model;
Fig. 2 be in the utility model stake resistance at the structural representation of line detection circuit;
Fig. 3 is the circuit block diagram that in the utility model, signal data calculates decision circuitry;
Fig. 4 is the circuit block diagram of wireless communication line in the utility model;
Fig. 5 is the schematic diagram of power circuit in the utility model.
Embodiment
As shown in Figure 1, the utility model discloses the abnormal remote alarming device of a kind of distribution transformer earthing resistance, comprise that stake resistance calculates decision circuitry, distant place warning circuit and power circuit at line detection circuit, signal data; Described stake resistance connects described signal data at line detection circuit and calculates decision circuitry, signal data calculates decision circuitry and connects described distant place warning circuit, distant place warning circuit connects supplying power allocation administrative center or operator on duty's mobile phone, and described power circuit connects respectively signal data and calculates decision circuitry, distant place warning circuit.
As shown in Figure 2, described stake resistance comprises distribution transformer earthing lead-in wire 1, circular iron core 2, a winding 3 at line detection circuit; Described distribution transformer earthing lead-in wire 1 is through circular iron core 2, the distribution transformer earthing 1 upper end D1 that goes between is connected on earth stud, described earth stud is the common earth stud connecting of substation transformer low-pressure side winding neutral point, shell, equipment frame, the distribution transformer earthing 2 lower end D2 ground connection that go between; Described winding 3 is enclosed within on circular iron core 2, and two termination X, Y of winding 3 connect signal data and calculate decision circuitry.
As shown in Figure 3, described signal data calculating decision circuitry comprises monitor signal input circuit, signal conversion circuit, signal judging circuit and executive circuit; Monitor signal input circuit connects described signal conversion circuit, and signal conversion circuit connects described signal judging circuit, and signal judging circuit connects described executive circuit, and executive circuit connects described distant place warning circuit.
Wherein said distant place warning circuit can adopt wireless communication line, and as shown in Figure 4, wireless communication line comprises stake resistance abnormal signal input circuit, Signal coding circuit and signal transmission circuit; Stake resistance abnormal signal input circuit connects described Signal coding circuit, and Signal coding circuit connects described signal transmission circuit; Signal transmission circuit is transmitted into stake resistance abnormal signal power distribution network power supply management center or operator on duty's mobile phone.
Wherein said distant place warning circuit can adopt optical fiber communication circuit, and optical fiber communication circuit comprises optical fibre communication cable, optical transmitter and receiver circuit; Described optical transmitter and receiver circuit comprises optical transmission circuit, optical receiving circuit; Optical receiving circuit connects the executive circuit of signal data calculating decision circuitry, and optical receiving circuit connects optical transmission circuit by optical fibre communication cable, and optical transmission circuit connects supplying power allocation administrative center.
As shown in Figure 5, described power circuit comprises the first voltage stabilizer IC1 and the second voltage stabilizer IC2, the first termination of described the first voltage stabilizer IC1 meets this power distribution station step down side AC power phase line L after being connected with the first capacitor C1 mono-termination, the second termination 2 of the first voltage stabilizer IC1 meets direct supply positive voltage terminal A after being connected with the 3rd capacitor C3 mono-termination, this power distribution station step down side AC power zero line N after the 3rd termination 3 of described the second voltage stabilizer IC2 is connected with the second capacitor C2 mono-termination, the second voltage stabilizer IC2 termination 2 meets direct supply negative voltage side B after being connected with the 4th capacitor C4 mono-termination, the 3rd termination 3 of the first voltage stabilizer IC1 respectively with the 3rd another termination of capacitor C3, first another termination of capacitor C1, second another termination of capacitor C2, the 4th another termination of capacitor C4, after connecting, second voltage stabilizer IC2 the first termination 1 connects direct supply generating positive and negative voltage for earth terminal O, described direct supply just, negative voltage side A, B connects respectively signal data and calculates decision circuitry, distant place warning circuit.
Under normal operation, distribution transformer earthing resistance value is very little, the earth point current potential of transformer higher than with ground potential, have certain electric current to flow through, the winding of observation circuit monitors certain current signal.Exceed code setting when abnormal increase occurs distribution transformer earthing resistance value, earth point and the ground potential of transformer change, the electric current of ground connection also changes, the winding of observation circuit monitors the current signal changing, and output sends signal data calculating decision circuitry to and calculates judgement processing.Calculate judgement by the current signal of analog to digital conversion, when judging to such an extent that current signal inputs to distant place warning circuit after exceeding the value that code specifies, report to the police.
The electric current monitoring when the winding of observation circuit diminishes, and illustrates that stake resistance increases, and after the value that code specifies if exceed, inputs to distant place warning circuit, reports to the police.
Monitor less than electric current when the winding of observation circuit, ground wire broken string is described, ground wire disconnection signal is inputed to distant place warning circuit, report to the police.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement the specific embodiment of the present invention; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request protection of the present invention.
Claims (5)
1. the abnormal remote alarming device of distribution transformer earthing resistance, is characterized in that: comprise that stake resistance calculates decision circuitry, distant place warning circuit and power circuit at line detection circuit, signal data; Described stake resistance connects described signal data at line detection circuit and calculates decision circuitry, signal data calculates decision circuitry and connects described distant place warning circuit, distant place warning circuit connects supplying power allocation administrative center or operator on duty's mobile phone, and described power circuit connects respectively signal data and calculates decision circuitry, distant place warning circuit;
Described stake resistance comprises distribution transformer earthing lead-in wire, a circular iron core, a winding at line detection circuit; Described distribution transformer earthing goes between through circular iron core, distribution transformer earthing lead-in wire upper end is connected on earth stud, described earth stud is substation transformer low-pressure side winding neutral point, shell, the common earth stud connecting of equipment frame, distribution transformer earthing lead-in wire lower end ground connection; Described winding is enclosed within on circular iron core, and two terminations of winding connect signal data and calculate decision circuitry.
2. the abnormal remote alarming device of distribution transformer earthing resistance according to claim 1, is characterized in that: described signal data calculates decision circuitry and comprises monitor signal input circuit, signal conversion circuit, signal judging circuit and executive circuit; Monitor signal input circuit connects described signal conversion circuit, and signal conversion circuit connects described signal judging circuit, and signal judging circuit connects described executive circuit, and executive circuit connects described distant place warning circuit.
3. the abnormal remote alarming device of distribution transformer earthing resistance according to claim 2, is characterized in that: described distant place warning circuit adopts wireless communication line, comprises stake resistance abnormal signal input circuit, Signal coding circuit and signal transmission circuit; Stake resistance abnormal signal input circuit connects described Signal coding circuit, and Signal coding circuit connects described signal transmission circuit; Signal transmission circuit is transmitted into stake resistance abnormal signal power distribution network power supply management center or operator on duty's mobile phone.
4. the abnormal remote alarming device of distribution transformer earthing resistance according to claim 2, is characterized in that: described distant place warning circuit adopts optical fiber communication circuit, comprises optical fibre communication cable, optical transmitter and receiver circuit; Described optical transmitter and receiver circuit comprises optical transmission circuit, optical receiving circuit; Optical receiving circuit connects the executive circuit of signal data calculating decision circuitry, and optical receiving circuit connects optical transmission circuit by optical fibre communication cable, and optical transmission circuit connects supplying power allocation administrative center.
5. the abnormal remote alarming device of distribution transformer earthing resistance according to claim 1, it is characterized in that: described power circuit comprises the first voltage stabilizer and the second voltage stabilizer, the first termination of described the first voltage stabilizer connects this power distribution station step down side AC power phase line after being connected with the first capacitor one termination, the second termination of the first voltage stabilizer connects direct supply positive voltage terminal after being connected with the 3rd capacitor one termination, this power distribution station step down side AC power zero line after the 3rd termination of described the second voltage stabilizer is connected with the second capacitor one termination, the second termination of the second voltage stabilizer connects direct supply negative voltage side after being connected with the 4th capacitor one termination, the 3rd termination of the first voltage stabilizer respectively with the 3rd another termination of capacitor, another termination of the first capacitor, another termination of the second capacitor, the 4th another termination of capacitor, after connecting, the first termination of described the second voltage stabilizer connects direct supply generating positive and negative voltage for earth terminal, described direct supply just, negative voltage side connects respectively signal data and calculates decision circuitry, distant place warning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320743854.XU CN203772964U (en) | 2013-11-22 | 2013-11-22 | Power distribution transformer grounding resistance anomaly remote alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320743854.XU CN203772964U (en) | 2013-11-22 | 2013-11-22 | Power distribution transformer grounding resistance anomaly remote alarm device |
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| Publication Number | Publication Date |
|---|---|
| CN203772964U true CN203772964U (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320743854.XU Expired - Fee Related CN203772964U (en) | 2013-11-22 | 2013-11-22 | Power distribution transformer grounding resistance anomaly remote alarm device |
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| CN (1) | CN203772964U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182153A (en) * | 2015-08-24 | 2015-12-23 | 国网天津静海供电有限公司 | Grounding wire fault indicator for distribution transformer |
| CN109765432A (en) * | 2018-12-29 | 2019-05-17 | 国网山东省电力公司高唐县供电公司 | Public power distribution station ground resistance real-time monitoring system and its implementation |
| CN109856460A (en) * | 2019-01-24 | 2019-06-07 | 国网山东省电力公司日照供电公司 | A kind of power distribution station grounding resistor monitoring system and monitoring method |
-
2013
- 2013-11-22 CN CN201320743854.XU patent/CN203772964U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182153A (en) * | 2015-08-24 | 2015-12-23 | 国网天津静海供电有限公司 | Grounding wire fault indicator for distribution transformer |
| CN109765432A (en) * | 2018-12-29 | 2019-05-17 | 国网山东省电力公司高唐县供电公司 | Public power distribution station ground resistance real-time monitoring system and its implementation |
| CN109765432B (en) * | 2018-12-29 | 2021-08-10 | 国网山东省电力公司高唐县供电公司 | Real-time monitoring system for ground resistance of public power distribution station area and implementation method thereof |
| CN109856460A (en) * | 2019-01-24 | 2019-06-07 | 国网山东省电力公司日照供电公司 | A kind of power distribution station grounding resistor monitoring system and monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20151122 |
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| EXPY | Termination of patent right or utility model |