CN102096003A - Automatic analytical device for checking wiring of conventional transformer - Google Patents
Automatic analytical device for checking wiring of conventional transformer Download PDFInfo
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- CN102096003A CN102096003A CN2009103114874A CN200910311487A CN102096003A CN 102096003 A CN102096003 A CN 102096003A CN 2009103114874 A CN2009103114874 A CN 2009103114874A CN 200910311487 A CN200910311487 A CN 200910311487A CN 102096003 A CN102096003 A CN 102096003A
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- conventional transformer
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Abstract
The invention provides an automatic analytical device for checking the wiring of the conventional transformer, which mainly comprises an alternating voltage sampler, an alternating current sampler, an analog/digital (A/D) converter, a processor I, a processor II based on the analysis of the wiring correctness of a differential protection current transformer (CT) of the conventional transformer, a liquid crystal display module and a key module. By the automatic analytical device, the problems of time consumption, energy consumption and high requirements on operators during the judgment on the wiring error of a relay protection circuit under the artificial condition in the prior art are solved. The automatic analytical device has high judging and analytical reliability, is used safely and simply and is convenient to operate.
Description
Technical field
The invention belongs to power industry analytical equipment technical field, be specifically related to a kind of conventional transformer wiring check automatic analysing apparatus, this device is used for measuring voltage, current parameters, drafting vector plot, analyzes the wiring correctness.
Background technology
The correctness of relay protection circuit wiring directly influences the normal operation of electric power system.Correctness to the relay protection circuit wiring is in time made analysis; it is requisite important step during transformer station invests to build, overhauls; the relay protection circuit wiring correctness of electric system is at present analyzed; mainly to pass through a large amount of calculating by manually carrying out the Zhao staff; manual drawing current vector figure, and then draw the result of relay protection circuit wiring analysis according to result of calculation and vector plot.The The whole analytical process calculated amount is big, and needs the staff rule of thumb to judge, so there is the shortcoming that efficient is low, error is big.
The manual method of traditional relay protection circuit wiring analysis specifically exists following shortcoming or deficiency:
1, analysis result reliability and poor accuracy.Owing to there is not unified working specification, there is certain randomness in operation; In addition, the height of staff's professional skill, objective environment factor etc., accuracy that all can impact analysis.
2, the professional ability to operating personnel requires high.Operating personnel should be familiar with the electric system knowwhy, and will possess rich practice experience, and whether can judge the relay protection circuit wiring correct, analyze then and where make mistakes, how to revise.
3, work complexity height, inefficiency.The data computation amount is big in the analysis and judgement process, and the manually-operated inefficiency is wasted time and energy, and in complicated operations flow process and lot of data computation process, makes a mistake unavoidably.
Summary of the invention
The object of the present invention is to provide a kind of conventional transformer wiring check automatic analysing apparatus, solved in the prior art only be waste time and energy when under the artificial situation relay protection circuit wiring error situation being judged, to the demanding problem of staff.
The technical solution that the present invention is directed to above-mentioned technical matters is as follows:
Conventional transformer wiring check automatic analysing apparatus, its special character is: comprise alternating voltage sampling thief and alternating current sampling thief, the A/D converter of connecting with the alternating current sampling thief with the alternating voltage sampling thief respectively, the processor I that connects with A/D converter, connect with processor I based on the processor II of the analysis of conventional transformer differential protecting CT wiring correctness and the LCD MODULE and the key-press module of connecting with processor II respectively based on the analysis of conventional transformer differential protecting CT wiring correctness.
The processor II of above-described analysis based on conventional transformer differential protecting CT wiring correctness is connected with communication module.
Above-described alternating voltage sampling thief and alternating current sampling thief comprise mutual inductor/current clamp, I/V converter and programmable amplifier respectively.
Above-described A/D converter is used for the analog signal conversion of programmable amplifier output is become digital signal.
Above-described processor I is used for the gain-adjusted of programmable amplifier and the signals collecting of A/D converter.
The processor II of above-described analysis based on conventional transformer differential protecting CT wiring correctness is used to control the demonstration of LCD MODULE, the keypress function of key-press module and the data communication of communication module and host computer.
Advantage of the present invention is as follows:
Discriminatory analysis reliability height, safe in utilization simple, easy to operate; conventional transformer wiring check provided by the invention can draw vector plot automatically, realize that the wiring correctness of conventional transformer differential protecting CT analyzes automatically with automatic analysing apparatus, the position and the type that can point out faults for the wiring of mistake.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Referring to Fig. 1, conventional transformer wiring check provided by the invention with automatic analysing apparatus mainly by alternating voltage sampling thief, alternating current sampling thief, A/D converter, processor I (C8051021), based on processor II (LPC2478), LCD MODULE, key-press module, the communication module (RS232) of the analysis of conventional transformer differential protecting CT wiring correctness be used for determining that the zero-crossing detector of phase place constitutes.Wherein alternating voltage sampling thief and alternating current sampling thief comprise mutual inductor/current clamp, I/V converter and programmable amplifier.Be used for becoming the A/D converter of digital signal to connect with alternating voltage sampling thief, alternating current sampling thief respectively the analog signal conversion of programmable amplifier output; The processor I (C8051021) that is used to realize the signals collecting of the gain-adjusted of programmable amplifier and A/D converter is connected with A/D converter; Processor II (LPC2478) end based on the analysis of conventional transformer differential protecting CT wiring correctness that is used to control the data communication of the keypress function of demonstration, key-press module of LCD MODULE and communication module (RS232) and host computer is connected with processor I (C8051021), is connected with key-press module with display module respectively based on the other end of the processor II (LPC2478) of the analysis of conventional transformer differential protecting CT wiring correctness.
Principle of work of the present invention is after measured signal converts current signal to through mutual inductor/current clamp, by the I/V converter current signal is converted to voltage signal, uses programmable amplifier to amplify after the adjustment signal amplification factor automatically then according to the size of input signal; By processor I (C8051021) control A/D converter the signal after amplifying is sampled, calculated again, obtain effective value, peak-to-peak value, by processor I (C8051021) sampled data is carried out phase place and the frequency that fast fourier transform obtains being sampled signal subsequently.Processor I (C8051021) sends to processor II (LPC2478) based on the analysis of conventional transformer differential protecting CT wiring correctness with measurement result by serial ports, realizes the demonstration and the preservation of measurement result based on the processor II (LPC2478) of the analysis of conventional transformer differential protecting CT wiring correctness.
Analysis specific implementation based on conventional transformer differential protecting CT wiring correctness is as described below:
Draw the correct vector plot in this loop
Collect this loop meritorious, idle send, be subjected to situation;
According to step 1.1) meritorious, the idle situation of sending, be subjected to draws the correct vector plot in this loop with reference voltage;
2) draw the vector plot of actual measurement with reference voltage;
3) export this circuit connection correctness analysis result:
3.1) vector plot and the step 2 that the step 1) gained is correct) vector plot of gained actual measurement compares to judge the correctness of wiring;
3.2) correct wiring according to analysis, judged result;
3.3) export this circuit connection correctness analysis result;
4) finish measurement, the judgement of closing facies unit wiring correctness;
5) obtain each side CT of conventional transformer differential protection and close the phase desired parameters;
6) adopt the simultaneously-measured method of each side homophase to draw the vector plot of each side CT selected item of conventional transformer differential protection loop with reference voltage;
7) according to conventional transformer and parameter thereof conventional transformer differential protecting CT loop measured value is converted;
8) analyze, judge whether close the facies analysis result correct?
9) the output conventional transformer closes phase correctness analysis result.
Conventional transformer differential protecting CT wiring correctness analytical work principle of the present invention: have three kinds of metering systems and realize the analysis of wiring correctness.
1. each side homophase Measurement and analysis: with voltage measurement passage one measuring transformer high-pressure side A phase voltage, measure the in-phase current of high-pressure side, medium voltage side, low-pressure side three sides simultaneously with current channel one, two, three, with A, B, C three-phase measure respectively finish after processor II (LPC2478) in the operative installations measurement data is carried out analytical calculation and is obtained the result.If medium voltage side and low-pressure side have multi-way switch and protection CT, analyze again after then each CT measurement being finished according to the method for saying above.
2. single-phase Measurement and analysis: with voltage measurement passage one measuring transformer high-pressure side A phase voltage, measure on high-tension side A, B, C three-phase current respectively with current channel one, use the same method and measure medium voltage side and low-pressure side three-phase current, if multichannel CT is arranged then should adopt with quadrat method and measure each road CT.After measurement is finished in the operative installations " processor II (LPC2478) carries out analytical calculation and obtains the result measurement data.
3. three-phase Measurement and analysis: with voltage measurement passage one measuring transformer high-pressure side A phase voltage, measure on high-tension side A, B, C three-phase current with current channel one, two, three, use the same method and measure medium voltage side and low-pressure side three-phase current, if multichannel CT is arranged then should adopt with quadrat method and measure each road CT.Processor II (LPC2478) after measurement is finished in the operative installations carries out analytical calculation and obtains the result measurement data.
Claims (6)
1. conventional transformer wiring check automatic analysing apparatus is characterized in that: comprise alternating voltage sampling thief and alternating current sampling thief, the A/D converter of connecting with the alternating current sampling thief with the alternating voltage sampling thief respectively, the processor I that connects with A/D converter, connect with processor I based on the processor II of the analysis of conventional transformer differential protecting CT wiring correctness and the LCD MODULE and the key-press module of connecting with processor II respectively based on the analysis of conventional transformer differential protecting CT wiring correctness.
2. a kind of conventional transformer wiring check automatic analysing apparatus according to claim 1 is characterized in that: the processor II of described analysis based on conventional transformer differential protecting CT wiring correctness is connected with communication module.
3. a kind of conventional transformer wiring check automatic analysing apparatus according to claim 1 and 2, it is characterized in that: described alternating voltage sampling thief and alternating current sampling thief comprise mutual inductor/current clamp, I/V converter and programmable amplifier respectively.
4. a kind of conventional transformer wiring check automatic analysing apparatus according to claim 3 is characterized in that: described A/D converter is used for the analog signal conversion of programmable amplifier output is become digital signal.
5. a kind of conventional transformer wiring check automatic analysing apparatus according to claim 4, it is characterized in that: described processor I is used for the gain-adjusted of programmable amplifier and the signals collecting of A/D converter.
6. a kind of conventional transformer wiring check automatic analysing apparatus according to claim 5 is characterized in that: the processor II of described analysis based on conventional transformer differential protecting CT wiring correctness is used to control the demonstration of LCD MODULE, the keypress function of key-press module and the data communication of communication module and host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103114874A CN102096003A (en) | 2009-12-15 | 2009-12-15 | Automatic analytical device for checking wiring of conventional transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103114874A CN102096003A (en) | 2009-12-15 | 2009-12-15 | Automatic analytical device for checking wiring of conventional transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102096003A true CN102096003A (en) | 2011-06-15 |
Family
ID=44129174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103114874A Withdrawn CN102096003A (en) | 2009-12-15 | 2009-12-15 | Automatic analytical device for checking wiring of conventional transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102096003A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459435A (en) * | 2014-11-21 | 2015-03-25 | 国家电网公司 | Wiring verification method and device for transformer substation |
| CN105929300A (en) * | 2016-04-15 | 2016-09-07 | 国网山东省电力公司章丘市供电公司 | Differential circuit detection voltage and power output box |
| CN108535587A (en) * | 2018-04-19 | 2018-09-14 | 云南电网有限责任公司曲靖供电局 | A kind of transformer connection fault testing apparatus |
-
2009
- 2009-12-15 CN CN2009103114874A patent/CN102096003A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459435A (en) * | 2014-11-21 | 2015-03-25 | 国家电网公司 | Wiring verification method and device for transformer substation |
| CN104459435B (en) * | 2014-11-21 | 2017-06-16 | 国家电网公司 | A kind of wiring verification method and device for transformer station |
| CN105929300A (en) * | 2016-04-15 | 2016-09-07 | 国网山东省电力公司章丘市供电公司 | Differential circuit detection voltage and power output box |
| CN105929300B (en) * | 2016-04-15 | 2019-01-04 | 国网山东省电力公司章丘市供电公司 | Differential circuit detects voltage, power supply delivery casing |
| CN108535587A (en) * | 2018-04-19 | 2018-09-14 | 云南电网有限责任公司曲靖供电局 | A kind of transformer connection fault testing apparatus |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Open date: 20110615 |