CN204679575U - Overhead grounded short-circuit fault indicator - Google Patents

Overhead grounded short-circuit fault indicator Download PDF

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Publication number
CN204679575U
CN204679575U CN201520236795.6U CN201520236795U CN204679575U CN 204679575 U CN204679575 U CN 204679575U CN 201520236795 U CN201520236795 U CN 201520236795U CN 204679575 U CN204679575 U CN 204679575U
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China
Prior art keywords
processor
overhead
circuit
detecting device
display device
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Active
Application number
CN201520236795.6U
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Chinese (zh)
Inventor
吕强
陈菊明
袁海波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shui Yuanhua Electric Co., Ltd.
Original Assignee
Beijing Semeureka Electric Co Ltd
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Priority to CN201520236795.6U priority Critical patent/CN204679575U/en
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Publication of CN204679575U publication Critical patent/CN204679575U/en
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Abstract

The utility model provides a kind of overhead grounded short-circuit fault indicator, comprising: multiple detecting device; For judging according to each described detecting device feedack whether this detecting device position is short-circuited the processor of fault; And, according to the judgement of described processor to show the display device of abort situation and state; Each described detecting device comprises: current transformer, Hi-pass filter, voltage transformer (VT) and low-pass filter; Described current transformer is connected with described processor by described Hi-pass filter, and described voltage transformer (VT) is connected with described processor by described low-pass filter; Described display device is connected with described processor.Such scheme detects the break-make information of each circuit by detecting device, the treated device of this information judges, to determine whether place circuit is short-circuited fault, again judged result is met at display device display, the short trouble greatly facilitating overhead transmission line detects, and can carry out detecting and processing in the very first time of fault.

Description

Overhead grounded short-circuit fault indicator
Technical field
The utility model relates to high-voltage test technical field, refers to a kind of overhead grounded short-circuit fault indicator especially.
Background technology
In grid power transmission field, often have the generation of small earthing current system singlephase earth fault, generally all adopt the mode of manual detection in prior art for such fault, manual detection needs to utilize instrument to carry out artificial judgment below lines branch and below circuit.
The method of artificial judgment in prior art, due to needs field wiring and detection, not only bothers very much, and detection time is long, and detection efficiency is very low.
Utility model content
The technical problems to be solved in the utility model be to provide a kind of can the overhead grounded short-circuit fault indicator of locating bad lines rapidly, to solve short trouble detection time existing for prior art of long, inefficient problem.
For solving the problems of the technologies described above, the utility model embodiment provides a kind of overhead grounded short-circuit fault indicator, comprising:
Multiple detecting device;
For judging according to each described detecting device feedack whether this detecting device position is short-circuited the processor of fault;
And, according to the judgement of described processor to show the display device of abort situation and state;
Each described detecting device comprises: current transformer, Hi-pass filter, voltage transformer (VT) and low-pass filter; Described current transformer is connected with described processor by described Hi-pass filter, and described voltage transformer (VT) is connected with described processor by described low-pass filter;
Described display device is connected with described processor.
Wherein, described indicator also comprises: for pointing out the warning horn of described detecting device abnormality, be connected with described processor.
Wherein, described processor is Programmable Logic Controller, ARM or AVR single chip.
Wherein, described display device is liquid crystal display, diode display or electroluminescent lamp;
Be provided with display driver circuit in described display device, described display device is connected with described processor by this driving circuit.
Wherein, described indicator also comprises: for the reset circuit of the described processor state information that resets, be connected with described processor.
Wherein, described indicator also comprises: for carrying out the test circuit of simulation test to described display device duty, be connected with described processor.
Wherein, described indicator also comprises: for the timer providing timing information to described processor, be connected with described processor.
The beneficial effect of technique scheme of the present utility model is as follows:
Such scheme detects the break-make information of each circuit by detecting device, the treated device of this information judges, to determine whether place circuit is short-circuited fault, again judged result is met at display device display, the short trouble greatly facilitating overhead transmission line detects, and can carry out detecting and processing in the very first time of fault.The utility model structure is simple, easy to use, can show rapidly fault and position occurs, thus indirectly improve the reliability of supply line.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the utility model embodiment overhead grounded short-circuit fault indicator;
Fig. 2 is the structured flowchart of another embodiment overhead grounded short-circuit fault indicator of the utility model.
[main element symbol description]
1, processor;
2, detecting device;
10, current transformer;
11, Hi-pass filter;
20, voltage transformer (VT);
21, low-pass filter;
3, display device;
4, reset circuit;
5, test circuit;
6, timer;
7, warning horn.
Embodiment
For making the technical problems to be solved in the utility model, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The utility model embodiment provide a kind of can the overhead grounded short-circuit fault indicator of locating bad lines rapidly.As shown in Figure 1, the overhead grounded short-circuit fault indicator of the present embodiment, comprising: multiple detecting device 2, processor 1 and display device 3.Described processor 1 for according to each described detecting device 2 feedack to judge whether this detecting device position is short-circuited fault; Display device 3 again according to the judgement of described processor 1 to show abort situation and malfunction.
In the present embodiment, described processor 1 is generally Programmable Logic Controller, ARM or AVR single chip.Apparent, described its inside of processor 1 also comprises C/D converter (analog to digital converter).
Each described detecting device 2 comprises: current transformer 10, Hi-pass filter 11, voltage transformer (VT) 20 and low-pass filter 21; Described current transformer 10 is connected with described processor 1 by described Hi-pass filter 11, and described voltage transformer (VT) 20 is connected with described processor 1 by described low-pass filter 21; Display device 3 is connected with processor 1.
In described detecting device 2, Hi-pass filter 11 be used for filtering current transformer 10 output signal in first-harmonic and low-order harmonic, output signal to processor 1, processor 1 is by the inner laggard row operation of analog to digital conversion; Low-pass filter 21 be used for filtering voltage transformer (VT) 20 output signal in high frequency interference, only leave power frequency component to processor 1, processor 1 is by the inner laggard row operation of analog to digital conversion; Processor 1 by conjunction with the voltage signal transmitted in each detecting device 2 and current signal, to judge whether this detecting device position is short-circuited fault.
And, processor 1 according to the measured value of voltage transformer (VT) 20, can also judge whether the circuit at its detecting device place has electricity, can also judge whether display device 3 is in the state of working online, thus allow processor 1 enter dormant state, until again detect that electricity just starts the monitoring of fault; Adopt the method to considerably reduce the power consumption of display device 3 in the middle of storing process, substantially prolongs the serviceable life of display device 3.
When the utility model embodiment uses, all main lines of transmission line of electricity, branch line and branch line are equipped with detecting device 2, by mutual inductor sample ground connection moment, the sudden change value of capacitance current, this capacitance current value is greater than certain numerical value, and ground connection moment phase voltage value of simultaneously sampling, and this magnitude of voltage is less than certain value, then think that circuit there occurs earth fault, otherwise think and earth fault does not occur.Upon the occurrence of a ground fault, the circuit at fault current place can do corresponding instruction in display device 3.
On the basis of above-described embodiment, described display device 3 is liquid crystal display, diode display or electroluminescent lamp, and other visual modes such as pointer even can be adopted to show; Be provided with display driver circuit in described display device 3, described display device 3 is connected with described processor 1 by this driving circuit.Certainly, when display device 3 adopts electroluminescent lamp, each electroluminescent lamp all has circuit connecting relation with corresponding detecting device, to show abort situation in time when breaking down.
On the basis of above-described embodiment, further, the indicator of the present embodiment also comprises: warning horn 7.Warning horn 7 is for pointing out the abnormality of described detecting device 2, and general employing hummer etc., determine that to facilitate maintainer whether detecting device is normal.
As Fig. 2, in another embodiment of the utility model, described indicator can also comprise: reset circuit 4, test circuit 5 and/or timer 6.
Reset circuit 4 is for the status information of the described processor 1 that resets, and reset circuit 4 is connected with described processor 1; Reset circuit 4 can also be used to resetting processor 1 in scheduling and planning process.Test circuit 5 is for carrying out simulation test to described display device 3 duty, and test circuit 5 is connected with described processor; Whether test circuit 8 is mainly used to test display apparatus 3 in process of production reliable, to enhance productivity, ensures product quality.Timer 6 provides timing information for giving described processor 1, and timer 6 is connected with described processor 1.
The beneficial effect of technique scheme of the present utility model is as follows:
Such scheme detects the break-make information of each circuit by detecting device, the treated device of this information judges, to determine whether place circuit is short-circuited fault, again judged result is met at display device display, the short trouble greatly facilitating overhead transmission line detects, and can carry out detecting and processing in the very first time of fault.The utility model structure is simple, easy to use, can show rapidly fault and position occurs, thus indirectly improve the reliability of supply line.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (7)

1. an overhead grounded short-circuit fault indicator, is characterized in that, comprising:
Multiple detecting device;
For judging according to each described detecting device feedack whether this detecting device position is short-circuited the processor of fault;
And, according to the judgement of described processor to show the display device of abort situation and state;
Each described detecting device comprises: current transformer, Hi-pass filter, voltage transformer (VT) and low-pass filter; Described current transformer is connected with described processor by described Hi-pass filter, and described voltage transformer (VT) is connected with described processor by described low-pass filter;
Described display device is connected with described processor.
2. overhead grounded short-circuit fault indicator according to claim 1, is characterized in that, described indicator also comprises: for pointing out the warning horn of described detecting device abnormality, be connected with described processor.
3. overhead grounded short-circuit fault indicator according to claim 1, is characterized in that, described processor is Programmable Logic Controller, ARM or AVR single chip.
4. overhead grounded short-circuit fault indicator according to claim 1, is characterized in that, described display device is liquid crystal display, diode display or electroluminescent lamp;
Be provided with display driver circuit in described display device, described display device is connected with described processor by this driving circuit.
5., according to the arbitrary described overhead grounded short-circuit fault indicator of claim 1-4, it is characterized in that, described indicator also comprises: for the reset circuit of the described processor state information that resets, be connected with described processor.
6., according to the arbitrary described overhead grounded short-circuit fault indicator of claim 1-4, it is characterized in that, described indicator also comprises: for carrying out the test circuit of simulation test to described display device duty, be connected with described processor.
7. according to the arbitrary described overhead grounded short-circuit fault indicator of claim 1-4, it is characterized in that, described indicator also comprises: for the timer providing timing information to described processor, be connected with described processor.
CN201520236795.6U 2015-04-17 2015-04-17 Overhead grounded short-circuit fault indicator Active CN204679575U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520236795.6U CN204679575U (en) 2015-04-17 2015-04-17 Overhead grounded short-circuit fault indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520236795.6U CN204679575U (en) 2015-04-17 2015-04-17 Overhead grounded short-circuit fault indicator

Publications (1)

Publication Number Publication Date
CN204679575U true CN204679575U (en) 2015-09-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106019063A (en) * 2016-08-02 2016-10-12 国网辽宁省电力有限公司抚顺供电公司 Fault indicator and fault detecting method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106019063A (en) * 2016-08-02 2016-10-12 国网辽宁省电力有限公司抚顺供电公司 Fault indicator and fault detecting method

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CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 100083 Building No. 1, No. 5, Yongfeng Road, Haidian District, Beijing 301

Patentee after: Beijing Shuimu Yuanhua Electric Co., Ltd.

Address before: 100083 Building No. 1, No. 5, Yongfeng Road, Haidian District, Beijing 301

Patentee before: BEIJING SEMEUREKA ELECTRICS CO., LTD.

Address after: 100083 Building No. 1, No. 5, Yongfeng Road, Haidian District, Beijing 301

Patentee after: Shui Yuanhua Electric Co., Ltd.

Address before: 100083 Building No. 1, No. 5, Yongfeng Road, Haidian District, Beijing 301

Patentee before: Beijing Shuimu Yuanhua Electric Co., Ltd.