CN202693728U - Electric power circuit fault detection system - Google Patents
Electric power circuit fault detection system Download PDFInfo
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- CN202693728U CN202693728U CN 201220288471 CN201220288471U CN202693728U CN 202693728 U CN202693728 U CN 202693728U CN 201220288471 CN201220288471 CN 201220288471 CN 201220288471 U CN201220288471 U CN 201220288471U CN 202693728 U CN202693728 U CN 202693728U
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Abstract
The utility model discloses an electric power circuit fault detection system, which is used for detecting a fault of an electric power circuit and carrying out remote alarming. The electric power circuit fault detection system comprises a digital fault indicator, a data collector and a main controller, wherein the digital fault indicator is used for detecting real-time data of the electric power circuit and outputting state information of the electric power circuit according to the real-time data; the data collector and the digital fault indicator form a communication network through short-distance wireless frequency modulation; the data collector is used for collecting the state information sent by the digital fault indicator and preparing the state information into a data packet; and the main controller is used for receiving the data packet sent by the data collector and judging a fault point of the electric power circuit and a fault type according to the information in the data packet. The electric power circuit fault detection system can realize remote alarming of the fault of the electric power circuit and the fault detection of a plurality of types of the electric power circuits is realized.
Description
Technical field
The utility model relates to the electroporation field, particularly a kind of power line fault detection system.
Background technology
Electric power line fault indicator is to be applied on electric line, power cable and the switch cubicle line, is used to indicate the device of fault current circulation.In case line failure, the track walker can be by the alarm indication of indicator, and the rapidly localization of faults is fixed a breakdown, and changes in the past blindly line walking, and segmentation is closed a floodgate and sent the backward way of electric looking up the fault.But traditional fault detector has adopted Analogical Circuit Technique and small shell package design, practical function is too simple, and the type of detection failure is also too single, and needs the on-the-spot tour of track walker, can't realize the remote failure warning, have very large technical limitation.
The utility model content
The technical problems to be solved in the utility model is that feeder line fault is detected and remote alarms.
To achieve these goals, the utility model provides a kind of power line fault detection system, comprising: the digital fault indicator, for detection of the real time data of power circuit, according to the status information of real time data output power circuit; Data acquisition unit forms communication network with described digital fault indicator by short-distance wireless frequency modulation, is used for gathering the status information that described digital fault indicator sends, and described status information is made packet; Master controller is used for receiving the packet that described data acquisition unit sends, and judges trouble spot and the fault type of power circuit according to the information in the packet.
Alternatively, described digital fault indicator and data acquisition unit have respectively the unique mailing address in the nybble whole world, are used for described data acquisition unit to the identification of digital fault detector.
Alternatively, described data acquisition unit also has a byte IEC60870-5-101 protocol communication address, is used for the Address Recognition between described master controller and the digital acquisition device.
Alternatively, carry out communication by the GPRS public network between described data acquisition unit and the master controller.
Alternatively, the APN passage by the GPRS public network carries out communication between described data acquisition unit and the master controller.
Alternatively, described digital fault indicator comprises: current detection circuit is couple to the wire of power circuit, for detection of the current status of power circuit; The wire insulation voltage detecting circuit is couple to the wire of power circuit, for detection of the Leakage Current of described wire; Temperature sensing circuit is couple to the wire of power circuit, for detection of the temperature of described wire; The automatic electricity getting circuit is couple to the wire of power circuit, is used for from power circuit induction power taking electric current; Microcontroller, be couple to the output terminal of current detection circuit, wire insulation voltage detecting circuit and temperature sensing circuit, real time data for the power circuit that will receive is compared with the state threshold of the power circuit of presetting, and draws the status information of power circuit.
Alternatively, described current detection circuit comprises: the first current transformer, for the primary current of sampling power line lead; The signal rectification filtering circuit is used for receiving the secondary current that the first current transformer is exported, and exports flat ripple signal, half-wave voltage signal and trap signal; The first analog to digital conversion circuit is used for flat ripple signal, half-wave voltage signal and the trap signal of analog form are converted to the receivable digital signal of microcontroller.
Alternatively, described wire insulation voltage detecting circuit comprises: the electric field induction sheet is couple to power line lead, for detection of the Leakage Current of wire; The signal rectification filtering circuit is for the induced signal that receives the electric field induction sheet, output lead insulation voltage detection signal; The second analog to digital conversion circuit is used for the wire insulation voltage detection signal of analog form is converted to the receivable digital signal of microcontroller.
Alternatively, described temperature sensing circuit comprises: thermal conductive metal plate directly contacts with power line lead; Temp probe, an end contacts with thermal conductive metal plate, other end output temperature detection signal; Signal amplification circuit, its input end is couple to the other end of temp probe, the temperature detection signal of output terminal output through amplifying of signal amplification circuit; The 3rd analog to digital conversion circuit is used for the temperature detection signal of analog form is converted to the receivable digital signal of microcontroller.
Alternatively, described automatic electricity getting circuit comprises: the second current transformer, be couple to power line lead, and be used for obtaining the power taking electric current by electromagnetic induction; The power taking current conversion circuit carries out conversion to the power taking electric current, the electric energy of output digital fault indicator available form.
The beneficial effects of the utility model are:
(1) realization is to reliable detection and the remote alarms of feeder line fault;
(2) can effectively detect multiple feeder line fault.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the circuit block diagram of power line fault detection system of the present utility model;
Fig. 2 is the circuit block diagram of digital fault indicator among Fig. 1;
Fig. 3 is the circuit diagram of current detection circuit among Fig. 2;
Fig. 4 is the circuit diagram of wire insulation voltage detecting circuit among Fig. 2.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the circuit block diagram of power line fault detection system of the present utility model.
As shown in Figure 1, digital fault indicator 20 mainly is installed in transformer station's 10 outlets, switch load side, built on stilts branch line, cable incoming-outgoing wire and basic routing line segmentation place, real time data for detection of power circuit, according to the status information of real time data output power circuit, to realize on-line monitoring, the fault detection and location to power circuit.For example, the data such as the load current of digital fault indicator 20 detection power circuits, short circuit action current, ground current, landing operation electric current, line-to-earth voltage, conductor temperature, judge the failure message of power circuit according to these data, the status information of output power circuit, the operational data the when failure message when status information comprises fault and normal operation.
Figure 2 shows that the circuit block diagram of digital fault indicator among Fig. 1.
As shown in Figure 2, the digital fault indicator comprises: current detection circuit 201, wire insulation voltage detecting circuit 202, temperature sensing circuit 203, automatic electricity getting circuit 204 and microcontroller 205.
Fig. 3 is the circuit diagram of current detection circuit among Fig. 2.
As shown in Figure 3, current detection circuit comprises: the first current transformer 2011, for the primary current of sampling power line lead 50; Signal rectification filtering circuit 2012 is used for receiving the secondary current that the first current transformer 2011 is exported, and exports flat ripple signal, half-wave voltage signal and trap signal; The first analog to digital conversion circuit 2013 is used for the input end that flat ripple signal, half-wave voltage signal and trap signal with analog form is converted to digital signal and is sent to microcontroller 205.The first current transformer 2011 among Fig. 3 only is that schematically those skilled in the art can select any suitable current transformer that power line lead is carried out current sample.
Fig. 4 is the circuit diagram of wire insulation voltage detecting circuit among Fig. 2.
As shown in Figure 4, the wire insulation voltage detecting circuit comprises: electric field induction sheet 2021, be couple to power line lead 50, and for detection of the Leakage Current of wire 50, calculate the insulation voltage of wire 50 by Leakage Current; Signal rectification filtering circuit 2022 is for the induced signal that receives electric field induction sheet 2021, output lead insulation voltage detection signal; The second analog to digital conversion circuit 2023 is used for the input end that wire insulation voltage detection signal with analog form is converted to digital signal and is sent to microcontroller 205.Electric field induction sheet 2021 among Fig. 4 only is that schematically those skilled in the art can select any suitable electric field induction sheet that power line lead is sampled.
Temperature sensing circuit 203 among Fig. 2 specifically comprises: with the thermal conductive metal plate that power line lead 50 directly contacts, be used for the temperature of conductive leads 50; With the contacted temp probe of thermal conductive metal plate, the other end output temperature detection signal of temp probe; Signal amplification circuit, its input end is couple to the other end of temp probe, the temperature detection signal of output terminal output through amplifying of signal amplification circuit; The 3rd analog to digital conversion circuit is used for the input end that temperature detection signal with analog form is converted to digital signal and is sent to microcontroller 205.For example, temp probe is comprised of temperature sensor chip LM94022, cylindrical metal case and inside stuffing, and the enclosure interior filling material is the silica flour that insulativity is high, thermal conductivity is good, and surface of shell uses the Epoxy Resin envelope.Temp probe is installed on the top encapsulating face of digital fault indicator, and fixed by encapsulating, the exposed part of temp probe is enclosed within on the thermal conductive metal plate, in the time of on digital fault indicator 20 conducting wires 50, wire 50 can directly be pressed on the thermal conductive metal plate, and the temperature of wire 50 is directly conducted to temp probe through thermal conductive metal plate.
Automatic electricity getting circuit among Fig. 2 specifically comprises: the second current transformer, be couple to power line lead 50, and be used for obtaining the power taking electric current by electromagnetic induction; The power taking current conversion circuit carries out conversion to the power taking electric current, the electric energy of output digital fault indicator 50 available forms.For example, the first current transformer 2011 in the current detection circuit 201 is except being used for current measurement, also can be used for online power taking, on the current coil basis, add again electricity taking coil, just can obtain certain power taking electric current, the power taking electric current just can provide complete machine working power and wireless telecommunications power supply for the digital fault indicator through the power converter of power taking current conversion circuit.
Power line fault detection system of the present utility model can be realized the remote alarms of feeder line fault, realizes multiple feeder line fault is detected.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. a power line fault detection system is characterized in that, comprising:
For detection of the real time data of power circuit and according to the digital fault indicator of the status information of real time data output power circuit;
The data acquisition unit that is used for gathering the status information of described digital fault indicator transmission and described status information is made packet forms communication network with described digital fault indicator by short-distance wireless frequency modulation;
Be used for receiving the packet of described data acquisition unit transmission and judge the trouble spot of power circuit and the master controller of fault type according to the information of packet, carry out communication with described data acquisition unit by wireless network.
2. power line fault detection system as claimed in claim 1, it is characterized in that, described digital fault indicator and data acquisition unit have respectively the unique mailing address in the nybble whole world, and described data acquisition unit is identified digital fault detector by unique mailing address.
3. power line fault detection system as claimed in claim 2 is characterized in that, described data acquisition unit also has for described master controller it is carried out a byte IEC60870-5-101 protocol communication address of Address Recognition.
4. power line fault detection system as claimed in claim 3 is characterized in that, carries out communication by the GPRS public network between described data acquisition unit and the master controller.
5. power line fault detection system as claimed in claim 4 is characterized in that, the APN passage by the GPRS public network between described data acquisition unit and the master controller carries out communication.
6. such as each described power line fault detection system of claim 1 to 5, it is characterized in that, described digital fault indicator comprises:
For detection of the current detection circuit of the current status of power circuit, be couple to the wire of power circuit;
For detection of the wire insulation voltage detecting circuit of the Leakage Current of described wire, be couple to the wire of power circuit;
For detection of the temperature sensing circuit of described conductor temperature, be couple to the wire of power circuit;
Be used for being couple to the wire of power circuit from the automatic electricity getting circuit of power circuit induction power taking electric current;
The real time data that is used for the power circuit that will receive is compared with the state threshold of the power circuit of presetting and is drawn the microcontroller of the status information of power circuit, is couple to the output terminal of current detection circuit, wire insulation voltage detecting circuit and temperature sensing circuit.
7. power line fault detection system as claimed in claim 6 is characterized in that, described current detection circuit comprises:
The first current transformer that is used for the primary current of sampling power line lead;
Be used for the signal rectification filtering circuit of the secondary current of reception the first current transformer output, export flat ripple signal, half-wave voltage signal and trap signal;
Be used for flat ripple signal, half-wave voltage signal and the trap signal of analog form is converted to the first analog to digital conversion circuit of digital signal, its output terminal is couple to the input end of microcontroller.
8. power line fault detection system as claimed in claim 6 is characterized in that, described wire insulation voltage detecting circuit comprises:
Electric field induction sheet for detection of the Leakage Current of wire is couple to power line lead;
The signal rectification filtering circuit that is used for the induced signal of reception electric field induction sheet, output lead insulation voltage detection signal;
Be used for the wire insulation voltage detection signal of analog form is converted to the second analog to digital conversion circuit of digital signal, its output terminal is couple to the input end of microcontroller.
9. power line fault detection system as claimed in claim 6 is characterized in that, described temperature sensing circuit comprises:
Thermal conductive metal plate directly contacts with power line lead;
Temp probe, an end contacts with thermal conductive metal plate, other end output temperature detection signal;
Signal amplification circuit, its input end is couple to the other end of temp probe, the temperature detection signal of output terminal output through amplifying of signal amplification circuit;
Be used for the temperature detection signal of analog form is converted to the 3rd analog to digital conversion circuit of digital signal, its input end is couple to signal amplification circuit, and its output terminal is couple to microcontroller.
10. power line fault detection system as claimed in claim 6 is characterized in that, described automatic electricity getting circuit comprises:
Be used for obtaining by electromagnetic induction the second current transformer of power taking electric current, be couple to power line lead;
The power taking current conversion circuit carries out conversion to the power taking electric current, the electric energy of output digital fault indicator available form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220288471 CN202693728U (en) | 2012-06-19 | 2012-06-19 | Electric power circuit fault detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220288471 CN202693728U (en) | 2012-06-19 | 2012-06-19 | Electric power circuit fault detection system |
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| Publication Number | Publication Date |
|---|---|
| CN202693728U true CN202693728U (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220288471 Expired - Fee Related CN202693728U (en) | 2012-06-19 | 2012-06-19 | Electric power circuit fault detection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749554A (en) * | 2012-06-19 | 2012-10-24 | 张忠华 | Electric power circuit fault detecting system |
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- 2012-06-19 CN CN 201220288471 patent/CN202693728U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749554A (en) * | 2012-06-19 | 2012-10-24 | 张忠华 | Electric power circuit fault detecting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING LINE PECKER POWER TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHANG ZHONGHUA Effective date: 20150715 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150715 Address after: 100000 Beijing city Fangshan District Doudian Town Wang Chu village north No. 132 Patentee after: Beijing Line Pecker Power Technology Co., Ltd. Address before: 100089 B building, new material building, Yongfeng base, Beijing, Haidian District 327 Patentee before: Zhang Zhonghua |
|
| DD01 | Delivery of document by public notice |
Addressee: Beijing Line Pecker Power Technology Co., Ltd. Document name: Notification of Termination of Patent Right |
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| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20170619 |
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| CF01 | Termination of patent right due to non-payment of annual fee |