CN203069727U - Fault positioning device for power transmission lines - Google Patents
Fault positioning device for power transmission lines Download PDFInfo
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- CN203069727U CN203069727U CN 201220697058 CN201220697058U CN203069727U CN 203069727 U CN203069727 U CN 203069727U CN 201220697058 CN201220697058 CN 201220697058 CN 201220697058 U CN201220697058 U CN 201220697058U CN 203069727 U CN203069727 U CN 203069727U
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- positioning device
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- display controller
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 17
- 230000007257 malfunction Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 8
- 238000005070 sampling Methods 0.000 abstract description 7
- 239000003595 mist Substances 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a fault positioning device for power transmission lines, which comprises a current transformer, a voltage transformer, an analog-to-digital (AD) converter, a GPS (Global Positioning System) time server, an RAM (Random Access Memory), a keyboard-display controller and a DSP (Digital Signal Processor). The fault positioning device is characterized in that the current transformer and the voltage transformer are respectively communicated and connected with the AD converter, the AD converter and the GPS time server are respectively communicated and connected with the DSP, the keyboard-display controller and the RAM are respectively connected with the DSP in a control manner, and the DSP is also connected with a power supply. The fault positioning device for the power transmission lines has the following technical effects that an interface circuit is simple, sampling is high in precision and speed, and multipath signals can be simultaneously acquired. Tests show that the device is stable in performance, can completely satisfy requirements for detecting pollution flashover, mist flashover and electricity stealing in the power system, and can rapidly discover and position a fault point.
Description
Technical field
The utility model relates to a kind of electric device, relates in particular to a kind of locating device of transmission line malfunction.
Background technology
The NETWORK STRUCTURE PRESERVING POWER SYSTEM complexity, failure mode is various, but it is wide to involve scope, to the resident living influence bigger be that pollution flashover and mist dodge problem.Pollution flashover refers to because equipment outer insulation surface contamination under atmospheric pollution, when running into dense fog or drizzle, the moistening formation conduction of conductive materials in filth moisture film, thereby there is leakage current to flow through along insulator surface, along with the increase of leakage current, insulator surface develops into arc discharge by spark discharge.When leakage current surpassed certain value, local arc can progressively stretch along face and finally cause flashover; It is more that mist dodges the pollutant that refers to owing to contained in the thick fog, makes power transmission line be subjected to " pollution ", causes containing mist air conductance and increase severely, and causes faults such as transmission line of electricity short circuit, tripping operation, breaking, causes the phenomenon of electric grid large area outage.By the accurate time service of GPS, failure point of power transmission line both end voltage, electric current and phase place are measured simultaneously, compared, can make the staff of electric system judge the position of trouble spot quickly and easily, thereby save national human and material resources, financial resources in large quantities.
The utility model content
The purpose of this utility model provides a kind of fault locator of transmission line of electricity, and it can determine the position of trouble spot fast, a large amount of savings manpower, material resources and financial resources.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows:
A kind of transmission line malfunction locating device, comprise current transformer, voltage transformer (VT), A-D converter, GPS timing device, RAM reservoir, keyboard display controller and dsp processor, it is characterized in that current transformer is connected with the A-D converter communication respectively with voltage transformer (VT), A-D converter is connected with the dsp processor communication respectively with the GPS timing device, keyboard display controller and RAM storer respectively with the dsp processor control linkage, dsp processor also is connected with power supply.
Keyboard display controller connects keyboard and display respectively.
Processor also is connected with computer, and dsp processor is sent to the data of gathering on the computer.
The utlity model has following technique effect:
This device interface circuit is simple, the sampling precision height, and speed is fast, and can gather multiple signals simultaneously.Test shows, the native system stable performance can be satisfied the detection requirement of pollution flashover in the electric system, mist sudden strain of a muscle and three kinds of phenomenons of stealing fully, can find and navigate to the trouble spot rapidly.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further
Fig. 1 is the structural representation of transmission line malfunction locating device described in the utility model.
Fig. 2 is the main program flow chart of transmission line malfunction locating device described in the utility model.
Embodiment
Embodiment 1
As shown in Figure 1, a kind of transmission line malfunction locating device, comprise current transformer, voltage transformer (VT), A-D converter, GPS timing device, RAM reservoir, keyboard display controller and dsp processor, it is characterized in that current transformer is connected with the A-D converter communication respectively with voltage transformer (VT), A-D converter is connected with the dsp processor communication respectively with the GPS timing device, keyboard display controller and RAM storer respectively with the dsp processor control linkage, dsp processor also is connected with power supply.Keyboard display controller connects keyboard and display respectively.Dsp processor also is connected with computer, and dsp processor is sent to the data of gathering on the computer.
Voltage on the high voltage transmission line is higher, electric current is bigger, but by the voltage transformer (VT) summation current transformer, can be translated into-voltage signal of 5V～5V, therefore, only need to after transforming-voltage signal of 5V～5V samples and stores by ADC and get final product.Data acquisition and processing (DAP) circuit in the detector main frame is core with the dsp processor, by the accurate time service of GPS, adopts high-accuracy A-D converter (ADC) to obtain the digitizing parameter.System has man-machine interface and communication function, the data that collect can be sent to upper PC, in the form of host computer by figure display data images intuitively.
In order to guarantee certain accuracy, this detector system adopts 16 high-accuracy A-D converters (ADC).Frequency analog signal is 50Hz, each cycle 100 points of need sampling, thereby the sampling rate of ADC is greater than or equals 5Ksps.The ADS8364 that the ADC of native system adopts TI to release, this chip internal have independently 16 analog to digital converters, six difference sampling amplifiers and 16 s' high speed parallel interface of six fully differential input channels, six.
System's master routine adopts the C language compilation, according to modular design method, a complete program is divided into the separate subroutine of some functions to design one by one and debugs, to debug good subroutine module then and organically piece together, after debugging is finished it will be solidificated among the inner Flash of F2812.The main program flow of this detector system as shown in Figure 2.At first, F2812 and HD7279 are carried out initialization.The initialization of F2812 is comprised the initialization (capturing unit and ADC clock are set) of initialization (communication baud rate is set), EV of initialization, the SCI of system's control initialization (house dog, system clock and peripheral hardware clock), interrupt vector table and the initialization of interrupt control register accordingly (enable and forbid respective interrupt).To the initialization of HD7279, to set the initial value of charactron exactly, at first remove to show, and then with the value zero clearing of each charactron.Then, ADS8364 is carried out electrification reset.Reset and to remove output register, stop the A/D conversion and close sampling switch.The ADC that resets, the RESET pin will keep the low level of 20ns at least.At last, enter circulation and wait interruption.Press when key is set, read a gps time and as the time benchmark is set, by the selected sampling time that sets of acknowledgement key.Equal setting-up time up to gps time, enable capturing unit, interrupt and start ADC once changing when the 10KHz rising edge of a pulse comes interim capturing unit to produce.EOC output low level during the ADC EOC produces XINT2 and interrupts, and the storage data also start ADC again in the XINT2 interrupt service subroutine, up to EOC.When biography PC key was pressed, it was effective to pass the PC sign, and the data of gathering are passed to the power carrier detector system of host computer and shown respective waveforms.
It will be recognized by those skilled in the art; under the prerequisite that does not depart from protection domain of the present utility model; can carry out various modifications, variation and combination to above-mentioned embodiment, and think that this modification, variation and combination are within the scope of originality thought.
Claims (3)
1. transmission line malfunction locating device, comprise current transformer, voltage transformer (VT), A-D converter, GPS timing device, RAM reservoir, keyboard display controller and dsp processor, it is characterized in that current transformer is connected with the A-D converter communication respectively with voltage transformer (VT), A-D converter is connected with the dsp processor communication respectively with the GPS timing device, keyboard display controller and RAM storer respectively with the dsp processor control linkage, dsp processor also is connected with power supply.
2. transmission line malfunction locating device as claimed in claim 1 is characterized in that keyboard display controller connects keyboard and display respectively.
3. transmission line malfunction locating device as claimed in claim 1 is characterized in that dsp processor also is connected with computer, and dsp processor is sent to the data of gathering on the computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220697058 CN203069727U (en) | 2012-12-14 | 2012-12-14 | Fault positioning device for power transmission lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220697058 CN203069727U (en) | 2012-12-14 | 2012-12-14 | Fault positioning device for power transmission lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203069727U true CN203069727U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220697058 Expired - Lifetime CN203069727U (en) | 2012-12-14 | 2012-12-14 | Fault positioning device for power transmission lines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203069727U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112003183A (en) * | 2020-08-06 | 2020-11-27 | 河南省同信电力工程有限公司 | Power transmission network fault processing system and method |
-
2012
- 2012-12-14 CN CN 201220697058 patent/CN203069727U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112003183A (en) * | 2020-08-06 | 2020-11-27 | 河南省同信电力工程有限公司 | Power transmission network fault processing system and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |
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| CX01 | Expiry of patent term |