CN202916437U - Multifunctional metering fault monitoring instrument - Google Patents
Multifunctional metering fault monitoring instrument Download PDFInfo
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- CN202916437U CN202916437U CN 201220625885 CN201220625885U CN202916437U CN 202916437 U CN202916437 U CN 202916437U CN 201220625885 CN201220625885 CN 201220625885 CN 201220625885 U CN201220625885 U CN 201220625885U CN 202916437 U CN202916437 U CN 202916437U
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- metering fault
- energy meter
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 20
- 238000012545 processing Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000006837 decompression Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of monitoring and processing of electric energy metering in a power system, in particular to a multifunctional metering fault monitoring instrument. The multifunctional metering fault monitoring instrument comprises an electric energy meter, a wiring terminal and a single chip microcomputer. The multifunctional metering fault monitoring instrument is characterized in that the multifunctional metering fault monitoring instrument further comprises a metering device which is connected with a lead-in port of the wiring terminal and a counter of the single chip microcomputer. The multifunctional metering fault monitoring instrument of the utility model has the advantage that the multifunctional metering fault monitoring instrument has a pulse electric quantity comparison function. The multifunctional metering fault monitoring instrument still has loss-of-voltage and current breaking judging functions and a timing function; the multifunctional metering fault monitoring instrument can receive pulses of the electric energy meter, and complete pulse comparison of the electric energy meter and a loss-of-voltage meter; once the difference value of the pulses of the electric energy meter and the loss-of-voltage meter exceeds a set value, the multifunctional metering fault monitoring instrument can timely send out an alarm; after a system gets right, automatic reset is performed; and therefore, accuracy and reliability of electric energy metering fault monitoring can be greatly improved, and the difficulty in electric quantity compensation can be lowered. Different pulse constants can be set according to different electric energy meters.
Description
Technical field
The utility model relates to monitoring and the processing technology field of electric energy metrical in the electric system, refers to especially a kind of Multifunctional measuring fault monitoring instrument.
Background technology
The integral body that electric energy metrical in the market mainly is comprised of mutual inductor, electric energy meter and secondary circuit, wherein arbitrarily a part go wrong all can not accurate-metering, and because the interference of all kinds of factors, the metering fault odds is larger, and when and where also can't be determined, in case fault must be carried out the processing of fault and remedying of electric weight after occuring; Consider from the angle that reduces breakdown loss, need to a kind ofly can promptly and accurately find fault, and the effective equipment of information during the record trouble, so not only can improve the speed of fault discovery and processing, also can provide solid reference frame for remedying of fault electric weight.
General failure logging equipment is traditional decompression calculagraph at present, it is to design for the operation characteristic that former terminal electric energy meter is stem-winder, generally there are not the situations such as inner broken string, deadlock because of stem-winder, when so decompression calculagraph and electric energy meter are installed jointly, it can only detect and enter electric energy meter electric parameter before, the abnormal conditions that mainly comprise mutual inductor and secondary circuit, such as TA damage, (TA is current transformer to the TV broken string, general CT; TV is voltage transformer (VT), general PT.) failure condition such as secondary circuit broken string can judge and record more exactly, then can not monitor the ruuning situation of electric energy meter itself.The failure conditions such as secondary circuit broken string can judge and record more exactly, then can not monitor the ruuning situation of electric energy meter itself.But along with going deep into that present metering is transformed, promoting the use of of the new transformers such as a large amount of oil free types, anti-resonance, anti overvoltage, and improving constantly of requiring of measuring apparatus closure, independence, mutual inductor and secondary circuit situation about breaking down is fewer now.On the contrary, electric energy meter is because functional requirement promotes too fast, and adopt the multi-functional form of full electronic more, complex structure, many with being connected of miscellaneous equipment, reduced its reliability and antijamming capability, we also prove the in recent years analysis of metering fault: electric energy meter has surpassed mutual inductor and secondary circuit to be become and causing the main cause of metering fault, and major failure has: 1. electric energy meter crashes because of thunderbolt or superpotential; 2. because causing the metering module of electric energy meter, certain external interference lost efficacy few meter or many quantity calculations; 3. the inner instrument of electric energy meter burns with TV, TA or breaks; In above situation, enter the electric parameter of electric energy meter or correct, so the decompression instrument can not be judged as failure condition, but electric energy meter itself can not accurate-metering.Become the main body of metering along with multi-function wrist-instrument, this problem is more and more outstanding and urgent.
The applicant is in view of disappearance and the inconvenience of prior art, and the spirit of adhering to research and innovation, keeping on improving is utilized its professional eye and professional knowledge, works out a kind of Multifunctional measuring fault monitoring instrument.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of Multifunctional measuring fault monitoring instrument is provided.
The utility model is achieved through the following technical solutions, comprise electric energy meter, connection terminal, single-chip microcomputer (single-chip microcomputer model: Fuji Tsu, MB95F128D), also comprise a measuring apparatus (computation chip model: Zhuhai torch power company, ATT7022A), described measuring apparatus links to each other with the inlet port of connection terminal and the counter of single-chip microcomputer.
At present the general principle of electronic electric energy meter is: the special metering IC in the table is converted to the output pulses that is directly proportional with it with the secondary power of input, and single-chip microcomputer is electric flux in measurable a period of time by the counting to output pulses.If electric energy meter causes crashing because of certain reason or metering module lost efficacy, the output pulses that it sends and the secondary power of input just can not guarantee the proportionate relationship of arranging.Therefore it is contemplated that: if in traditional decompression calculagraph, increase special-purpose computation chip, make simultaneously it possess the function that receives the electric energy meter output pulses, so, because entering the decompression instrument is identical with the secondary power of electric energy meter, just can carry out the in good time comparison of pulse between them, the output pulses number that both send within the regular hour under normal circumstances should equate or keep a fixing ratio, in case and electric energy meter is unusual, both pulses must be unequal, the equilibrium relation of this ratio will be broken, and so just can determine the electric energy meter metering and lose normal condition.
The utility model has the advantage of to have the comparison function of impulse electric charge.1. the judgement and the clocking capability that keep original decompression, cutout; 2. can accept the electric energy meter pulse, finish two kinds ratio of pulse length to the total cycle length pair, in case both pulse differences surpass settings, in time alarm, system automatically resets after recovering normally; Greatly improve accuracy and the reliability of electric energy metrical malfunction monitoring, also reduced the difficulty of electric quantity compensating.3. for different electric energy meters different meter constants can be set.
Description of drawings
Fig. 1 is structural representation.
Embodiment
Be described further below in conjunction with 1 pair of preferred embodiment of the present utility model of accompanying drawing, comprise electric energy meter 1, connection terminal 2, single-chip microcomputer 3(single-chip microcomputer model: Fuji Tsu, MB95F128D), also comprise a measuring apparatus 4(computation chip model: Zhuhai torch power company, ATT7022A), described measuring apparatus 4 links to each other with the inlet port of connection terminal 2 and the counter of single-chip microcomputer 3.
The utility model is on the basis that keeps traditional voltage drop recorder function, has increased the pulse comparison function.Concrete function is achieved as follows: the output pulses that electric energy meter 1 sends enters connection terminal 2, by entering the counter of single-chip microcomputer 3 after processing; Simultaneously, the meter constant that will be monitored electric energy meter 1 by programmable device before single-chip microcomputer 3 is installed is inserted (adapt to different electric energy meter requirements, but constant field modification).Like this, by constant and meter degree umber of pulse, single-chip microcomputer 3 can obtain the accumulative total electric weight E2 of electric energy meter 1 within a period of time.Simultaneously, by entering the special metering IC ATT7022A of measuring apparatus 4 after sampling, the sampling, the electrical energy pulse of ATT7022A output enters single-chip microcomputer 3 to the current/voltage of metering equally respectively, obtains another accumulative total electric weight E1.(tentatively be decided to be at present 1Kwh) after E1 is accumulated to certain value, relatively the difference of E1 and E2 if difference greater than 0.1Kwh, then starts alarm, reminds the staff in time to process; Record simultaneously the aggregate-value of E1, E2, after the situ metrology device recovers normally, stop counting, the difference of E1 and E2 is exactly the electric weight that the planted agent remedies between age at failure like this.In fact this be exactly that present general electric energy metrical function is placed in the utility model, compares constantly with the electric energy meter of operation, greatly improved undoubtedly accuracy and the reliability of electric energy metrical malfunction monitoring, also reduced the difficulty of electric quantity compensating.
1. function pulse small terminal is the common configuration of electronic electric energy meter, and usually is in idle state when moving at the scene, can realize fully so the decompression instrument is introduced in pulse;
Generally only finish the function of fault judgement and timing when 2. traditional decompression instrument moves, do not exist the loaded down with trivial details data of large amount of complex to process, its hardware configuration is relative with software flow simple, the PCB peripheral cell is few, MCU has many function end pins for empty, all has very large extending space on the hardware and software feature;
3. the purpose of function expansion only is to finish the comparison of both pulses, accuracy requirement to the result is not high, normal uneven situation (as owing to the different differences that produce of the class of accuracy of two cover computation chips) can be judged as fault on the contrary because precision is too high; In addition, in a single day electric energy meter breaks down (as crashing), and generally can there be larger difference in its output pulses that sends with normal pulse meeting, and the difficulty that both comparisons realize technically is also little;
4. just because of structure and function are relatively simple, the ability that the decompression instrument stands extraneous all kinds of impacts is strong, and its probability that breaks down is much smaller than electric energy meter, so if the right result of ratio of pulse length to the total cycle length surpasses setting, should be measuring apparatus, but not the decompression instrument goes wrong.
The above embodiment has only expressed a kind of embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (1)
1. Multifunctional measuring fault monitoring instrument comprises electric energy meter, connection terminal, single-chip microcomputer, it is characterized in that: also comprise a measuring apparatus, described measuring apparatus links to each other with the inlet port of connection terminal and the counter of single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220625885 CN202916437U (en) | 2012-11-23 | 2012-11-23 | Multifunctional metering fault monitoring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220625885 CN202916437U (en) | 2012-11-23 | 2012-11-23 | Multifunctional metering fault monitoring instrument |
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| Publication Number | Publication Date |
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| CN202916437U true CN202916437U (en) | 2013-05-01 |
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| CN 201220625885 Expired - Fee Related CN202916437U (en) | 2012-11-23 | 2012-11-23 | Multifunctional metering fault monitoring instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616659A (en) * | 2013-12-02 | 2014-03-05 | 国家电网公司 | Automatic reliability test device and method for intelligent ammeters under circumstance of instant voltage interruption |
| CN103698736A (en) * | 2013-11-27 | 2014-04-02 | 国家电网公司 | Automatic combined wiring instrument |
-
2012
- 2012-11-23 CN CN 201220625885 patent/CN202916437U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698736A (en) * | 2013-11-27 | 2014-04-02 | 国家电网公司 | Automatic combined wiring instrument |
| CN103616659A (en) * | 2013-12-02 | 2014-03-05 | 国家电网公司 | Automatic reliability test device and method for intelligent ammeters under circumstance of instant voltage interruption |
| CN103616659B (en) * | 2013-12-02 | 2016-08-17 | 国家电网公司 | Intelligent electric energy meter transient voltage interrupts automatic testing equipment and the method for lower reliability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Feng Inventor after: Jiang Hui Inventor after: Zhang Xi Inventor after: Liu Hui Inventor after: Ma Haifeng Inventor before: Li Feng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LI FENG TO: LI FENG JIANG HUI ZHANG XI LIU HUI MA HAIFENG |
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| ASS | Succession or assignment of patent right |
Owner name: STATE GRID HUNAN ELECTRIC POWER COMPANY XIANGXI PO Effective date: 20141104 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: LI FENG Effective date: 20141104 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 416000 XIANGXI TUJIA AND MIAO AUTONOMOUS PREFECTURE, HUNAN PROVINCE TO: 100031 XICHENG, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20141104 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: State Grid Hunan Electric Power Company Patentee after: XIANGXI ELECTRIC POWER SUPPLY COMPANY OF STATE GRID HUNAN ELECTRIC POWER COMPANY Address before: 416000 Xiangxi Power Bureau of Xiangyang County, Xiangxi Tujia and Miao Autonomous Prefecture, Hunan, Jishou Patentee before: Li Feng |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20181123 |