CN2704052Y - In-situ detecting instrument for electric energy metering device - Google Patents
In-situ detecting instrument for electric energy metering device Download PDFInfo
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- CN2704052Y CN2704052Y CN 200420016518 CN200420016518U CN2704052Y CN 2704052 Y CN2704052 Y CN 2704052Y CN 200420016518 CN200420016518 CN 200420016518 CN 200420016518 U CN200420016518 U CN 200420016518U CN 2704052 Y CN2704052 Y CN 2704052Y
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Abstract
An in-situ detecting instrument for electric energy metering device disclosed by the utility model belongs to the technical field of electric energy testing instrument. The utility model is a comprehensive in-situ detecting instrument for electric energy metering device, comprising a housing and a control panel, a voltage mutual inductor and a current mutual inductor for metering electric energy. The inner part of the housing is equipped with an electric voltage, electric current, electric energy and information inputting and processing part for checking and metering, a control part, an output part, a communicating part and their auxiliary parts. The detecting instrument also comprises a quadrate drop of pressure wireless checking mechanism including a quadrate drop of pressure checking module and a wireless communicating module which are connected with a microcontroller. The detecting instrument applies complete digital signal processing technique, and adopts a method of A/D convert; a multi-channel successive comparison type A/D converter is controlled by the microcontroller to realize measuring various electric quantity; the detecting instrument can detect electrical parameters of electric voltage, electric current, horsepower, power factor, electric energy, PT real charge, CT real charge, quadrate drops of pressure, variable ratio, ratio difference and angular difference, etc. The detecting instrument realizes the composite measurement of the various electric quantity by a set of circuit, and makes the electric energy metered and detected with unification, totalization, simplification and multiple functions, and the detecting instrument makes the instrumental integration, miniaturization, advancement and modernization.
Description
One. technical field
The disclosed electric power meter in-situs tester of the utility model belongs to the power test Instrument technology field, and what be specifically related to is a kind of spindle comprehensive parameter detector device of field electric energy measurement.
Two. background technology
Electric power meter is made up of voltage transformer (VT) (PT), current transformer (CT) and electric energy meter usually.Thereby, when at present electric power meter being carried out field-checking, also need to use real Road test instrument of PT secondary voltage drop tester, PT and CT and electric energy meter field check meter to carry out verification usually respectively.Because these traditional testing instruments are confined to a certain specific test function, thereby its test circuit and testing software are special-purpose separately, and the mutual difference of test philosophy is very big separately, test based on small-signal difference analogue measurement as the PT secondary voltage drop, and electric energy measurement can't realize multi-functional multiple measurement based on time division multiplier or digital multiplier etc. at all.
Our design philosophy and above-mentioned traditional testing instruments deposit ground basic different.We just consider as a whole on initial hardware design, have used totally digitilized signal processing technology, have adopted high-speed, high precision A/D converter, microcontroller to control, and a unified hardware test platform is provided.In addition, owing to also adopted some new integrated circuit blocks on hardware design, the technical work that these are new makes the volume and weight of a comprehensive detector of the electric energy metrical that we develop much smaller than above-mentioned any traditional single parameter check meter.On this basis, we with the organically combination in addition of above-mentioned various functions, have realized the comprehensive integral function of instrument by software design.
Our electric power meter field test instrument has adopted direct mould-number conversion scheme, to realize the measurement of multiple electric weight.Specifically, adopt the microprocessor controls hyperchannel to compare pattern---number converter one by one, waveform to voltage and current is sampled simultaneously, by the same group sampled value of microcontroller, calculate electric parameters such as voltage, electric current, power, power factor, electric energy, load, no-load voltage ratio, pressure drop then according to gained.Thereby realized the measurement of multiple electric weight by a cover circuit.Simplify hardware design greatly, improved the reliability of instrument.
Up to the present, it all is to realize by wired mode that secondary voltage drop detects, and adopts this measuring method, needs tens meters cables to hundreds of rice of laying from voltage transformer (VT) to electric energy meter, sometimes this cable also needs to walk around various obstacles, time-consuming effort again.Making and using wireless secondary voltage drop tester device is that producer and user dream of always.Yet because technology, wireless secondary voltage drop tester device is never accomplished.We have proposed a kind of brand-new design proposal finally through proving repeatedly and testing, and have obtained ideal results in the laboratory.Need further to improve and improve the transmission speed of measuring raw data, and this detection method is also merged in the comprehensive detecting Instrument of electric energy metrical.That the electric power meter in-situs tester of Xing Chenging has realized that electric energy metrical detects thus is unitized, synthesization, simplification, multifunction, integrated, the miniaturization of instrument, evolve earlier, modernization.
Three. summary of the invention
Goal of the invention of the present utility model is to provide this new electric power meter in-situs tester to society, for the development of electric utility is made contributions.
The technical solution of the utility model is such: a kind of electric power meter in-situs tester, include housing and control panel, the voltage transformer (VT) of electric energy metrical and current transformer, the voltage of the detection of assembling metering in the housing, electric current, energy information input and processing section, control section, output, communication part and their slave part, voltage wherein, electric current, the energy information importation comprises voltage, electric current, the multi-channel input of electric energy, multichannel detects change-over circuit and connects composition with the sequence circuit function, its processing section comprises the amplifying circuit of multiple sample information, filtering circuit, holding circuit, shaping circuit, A/D change-over circuit function connects to be formed, control section comprises microcontroller and auxiliary circuit thereof---interface circuit, control bus, be used for selecting and operation detection, show, print the keyboard of electrical quantity, output comprises writing circuit and printer thereof, display circuit and display thereof, appliance circuit and instrument thereof---voltage table, reometer etc., slave part comprises power supply and power circuit etc., and the electronic component of assembling described each circuit, device, assembly, parts, connector, circuit board, integrated circuit block, connecting conducting wire and cable etc., function connects package assembly and forms, and these all are the known technology contents.Technical characterstic is: this electric power meter in-situs tester also includes the secondary voltage drop wireless detection mechanism, this mechanism includes secondary voltage drop detection module, wireless communication module, wherein secondary voltage drop detection module, wireless communication module all connect with microcontroller, the secondary voltage drop detection module is connected and is formed by three groups of voltage transformer (VT) sample circuit corresponding with each, treatment circuit, A/D change-over circuit functions, wireless communication module by signal generating circuit, carrier current channel, radiating circuit or/and receiving circuit, antenna function connection form.
The above-described electric power meter in-situs tester of root a tree name, technical characterstic also has: the described voltage of a., electric current, energy information multi-channel input include three-phase and four-line voltage input end, three-phase current pincers input end, electrical energy pulse input end; B. it is that a program control conversion multi-way switch is the main circuit that constitutes that described multichannel detects change-over circuit, it is controlled by sequence circuit, and program control conversion multi-way switch includes the program control switch of electrical quantitys such as detecting voltage, electric current, power, power factor, electric energy, the real load of PT, the real load of CT, secondary voltage drop, no-load voltage ratio, ratio, angular difference.
The above-described electric power meter in-situs tester of root a tree name, detailed technical characterstic has: the described three-phase and four-line voltage input end of a., three-phase current pincers input end all are the input ends that multichannel detects change-over circuit; The electrical energy pulse input end connects with electric energy meter pulse information sampling end, this end also connects with a control end of microcontroller behind phase inverter, phase inverter can adopt the merchant to sell common phase inverter, as long as they can realize all can using of its circuit function, as available 74HC1G14,74ACT1G14 etc.; B. the program control end of described sequence circuit connects with another control end of microcontroller; C. this electric power meter in-situs tester can have the subsidiary capsule of secondary voltage drop wireless detection mechanism, realizes the radio detection with an instrument.
The above-described electric power meter in-situs tester of root a tree name, detailed technical characterstic also has: the treatment circuit of the described secondary voltage drop detection module of a. is connected and is formed by amplifying circuit, filtering circuit, phase lock circuitry, frequency multiplier circuit, shaping circuit function; B. the signal generating circuit of described wireless communication module is connected and is formed by crystal oscillating circuit, oscillatory circuit function, carrier current channel is connected and is formed by modulation circuit, mixting circuit, high frequency carrier circuit function, and wherein the input end of the output terminal of oscillatory circuit and carrier current channel connects together.
The above-described electric energy metrical in-situs tester of root a tree name, the detailed technology characteristics also have: the integrated circuit block that the described secondary voltage drop detection module of a. is made up of functions such as sample circuit, treatment circuit, A/D change-over circuits is that the master constitutes, the common integrated circuit block that can adopt the merchant to sell fully, as long as it can realize all can using of its circuit function, it has synchronous serial bus to connect with microcontroller, and synchronous serial bus comprises compositions such as clock line, synchronous incoming line and output line; B. described wireless communication module by signal generating circuit, carrier current channel, radiating circuit or/and the integrated circuit block that receiving circuit, antenna function are formed is mainly to constitute, the common integrated circuit block that can adopt the merchant to sell fully, as long as it can realize all can using of its circuit function, it has asynchronous serial bus to connect with microcontroller, and asynchronous serial bus comprises compositions such as asynchronous incoming line and output line; C. the integrated circuit block that described voltage detection module and current detection module all are made up of sample circuit, treatment circuit, A/D change-over circuit function is that the master constitutes, can adopt the merchant to sell common integrated circuit block equally, as long as they can realize all can using of its circuit function, they have synchronous serial bus to connect with microcontroller respectively, and its synchronous serial bus comprises compositions such as clock line, synchronous incoming line and output line.
The above-described electric power meter in-situs tester of root a tree name, detailed technical characterstic also has: the described voltage detection module of a., current detection module, secondary voltage drop detection module all are that the integrated circuit block by analog to digital converter is mainly to constitute, the common integrated circuit block that they all can adopt the merchant to sell, as integrated circuit blocks such as ADE7754, AT73C500, ADS7809, as long as they can realize all can using of its circuit function; B. described wireless communication module all is to be that the integrated circuit block of the wireless transmission of 100MHz～4.2GHz is mainly to constitute by frequency, the common integrated circuit block that they all can adopt the merchant to sell, as JINOU3263, PTR2000, LT8030, D29DM, SR24G or the like integrated circuit block, as long as they can realize all can using of its circuit function.C. the common microcontroller that described microcontroller all can adopt the merchant to sell is as EZ80F91, LPC2000, P89C51RDZ etc., as long as they can realize that the function of microcontroller needs all can use.
The advantage of electric power meter in-situs tester described in the utility model is a lot: 1. consider as a whole on hardware design, used totally digitilized signal processing technology, adopted high-speed, high precision A/D converter, microcontroller to control, the hardware test platform of a unified comprehensive parameters is provided; 2. adopted the analog-to-digital conversion method comprehensively, to realize the measurement of multiple electric weight, compare pattern---number conversion mode one by one by the microprocessor controls hyperchannel, waveform to voltage and current is sampled simultaneously, then by the same group sampled value of microcontroller according to gained, calculate electrical parameters such as voltage, electric current, power, power factor, electric energy, load, no-load voltage ratio, pressure drop, thereby realized the composite measurement of multiple electric weight by a cover circuit; 3. the secondary voltage drop test all is to realize that by wired mode we break through routine before this, has realized the technological leapfrogging that secondary voltage drop adopts wireless mode to detect; 4. that this electric power meter in-situs tester has realized that electric energy metrical detects is unitized, synthesization, simplification, multifunction, integrated, the miniaturization of instrument, evolve earlier, modernization.Above advantage illustrates that this is a kind of electric power meter in-situs tester that is worthy of popularization.
Four. description of drawings
Figure of description of the present utility model has 6 width of cloth:
Fig. 1 is the structured flowchart of electric power meter in-situs tester;
Fig. 2 is the input panel structural drawing of electric power meter in-situs tester;
Fig. 3 is the subsidiary capsule structured flowchart of electric power meter in-situs tester;
Fig. 4 is the subsidiary capsule input panel structured flowchart of electric power meter in-situs tester;
Fig. 5 is the circuit theory diagrams of electric power meter in-situs tester;
Fig. 6 is the circuit theory diagrams of the subsidiary capsule of electric power meter in-situs tester.
In each figure, used unified label, among each figure: 1. housing; 2. panel; 3. information of voltage input and processing section also are current detection section; 4. current information input and processing section also are the current detecting part; 5. energy information input and processing section also are the electric energy detection part; 6. mould---logarithmic data bus; 7. control section; 8. control line; 9. control line; 10. electrical energy pulse incoming line; 11. video data bus; 12. display; 13. keyboard data bus; 14. keyboard; 15. communication data bus; 16. communication part; 17,18,19. three-phase and four-line voltage input ends; 20,21,22. three-phase currents pincers input end; 23 electrical energy pulse input ends; 24. ground end; 25,26, the 27. three-phase and four-line voltage input ends of putting in addition; 28. secondary voltage drop detection module; 29. another mould---logarithmic data bus; 30. control line; 31. microcontroller; 32. another communication data bus; 33. wireless communication module; 34. capsule housing; 35. little box panel; 36,37,38. form mould---logarithmic data bus 6, and wherein 36 is clock line, and 37,38 are data discrepancy bus; 39,40. form communication data bus 15, and wherein 39 is emission line, and 40 for receiving line; 41,42,43. form another mould---logarithmic data bus 29, and wherein 41 is clock line, and 42,43 are data discrepancy bus; 44,45. form communication data bus 32, and wherein 44 is emission line, and 45 for receiving line.
Five. specific embodiments
Non-limiting examples of the present utility model is as follows:
Embodiment one. the electric power meter in-situs tester
This routine its concrete structure of electric power meter in-situs tester is united by Fig. 1, Fig. 2, Fig. 5 and is illustrated, it includes housing 1 and control panel 2, the voltage transformer (VT) of electric energy metrical and current transformer, the voltage of the detection of assembling metering, electric current, energy information input and processing section 3,4,5 in the housing 1, control section 7,14, output 12, communication part 16 and their slave part.Wherein voltage, electric current, energy information importation comprise voltage input end 17～19, current input terminal 20～22, all are the input ends that multichannel detects change-over circuit; It is that a program control conversion multi-way switch is the main circuit that constitutes that multichannel detects change-over circuit, it is connected and control by sequence circuit, and program control conversion multi-way switch includes the program control switch of electrical quantitys such as detecting voltage, electric current, power, power factor, electric energy, the real load of PT, the real load of CT, secondary voltage drop, no-load voltage ratio, ratio, angular difference.Electric energy detection partly has: electrical energy pulse input end 23 connects with electric energy meter pulse information sampling end, 23 also connect with the input end (2 pin) of phase inverter 5, phase inverter 5 output terminals (4 pin) connect with a control end (114 pin) of microcontroller 7 through electrical energy pulse incoming line 10, phase inverter 5 can adopt the merchant to sell common phase inverter, as long as they can realize all can using of its circuit function, as available 74HC1G14, also available 74ACT1G14 etc.Its processing section comprises that amplifying circuit, filtering circuit, holding circuit, shaping circuit, the A/D change-over circuit function of multiple sample information connect composition.Control section comprises microcontroller 7 and auxiliary circuit thereof---connecting conducting wire and cables such as interface circuit, control bus 6,8～10,11,13,15, mould---logarithmic data bus 6 wherein, the 6th, synchronous serial bus, comprise clock line 36, synchronous incoming line and output line 37,38 etc., 8 and 9 is respectively the control line of 7 pairs of current detection section 3 of microcontroller and current detecting part 4, communication data bus 15 is asynchronous serial bus, comprises asynchronous incoming line and output line 39,40 etc.Be used for selecting with operation detection, demonstration, printing electrical quantity be keyboard 14 and keyboard data bus 13.Output comprises writing circuit and printer (not illustrating in the drawings) thereof, display circuit (video data bus 11) and display 12 thereof---as LCD, appliance circuit and instrument thereof---voltage table, reometer etc., slave part comprises power supply and power circuit etc., and the electronic component, device, assembly, parts, connector, circuit board, integrated circuit block etc. of assembling described each circuit, function connects package assembly and forms.Technical characterstic is: this electric power meter in-situs tester also includes the secondary voltage drop wireless detection mechanism, and this mechanism includes secondary voltage drop detection module 3, wireless communication module 16, microcontroller 7.Secondary voltage drop detection module 3 is connected and is formed by three groups of voltage transformer (VT) sample circuit, treatment circuit, A/D change-over circuit functions corresponding with each, and the treatment circuit of this module is connected and formed by amplifying circuit, filtering circuit, phase lock circuitry, frequency multiplier circuit, shaping circuit function.And in this example, voltage detection module and secondary voltage drop detection module are both a module.Voltage detection module 3, current detection module 4 all are that the integrated circuit block that is formed by functional circuits such as realization sample circuit, treatment circuit, A/D change-over circuits is that the master constitutes, the common integrated circuit block that can adopt the merchant to sell fully, as long as it can realize all can using of above circuit function, it has synchronous serial bus 6 to connect with microcontroller 7.Wireless communication module 16 by signal generating circuit, carrier current channel, radiating circuit or/and receiving circuit, antenna function connect and form, the signal generating circuit of this module is connected and is formed by crystal oscillating circuit, oscillatory circuit function, carrier current channel is connected and is formed by modulation circuit, mixting circuit, high frequency carrier circuit function, and wherein the input end of the output terminal of oscillatory circuit and carrier current channel connects together.Wireless communication module 16 in this example is or/and the integrated circuit block that functional circuits such as receiving circuit, antenna form is to lead to constitute by signal generating circuit, carrier current channel, radiating circuit, the common integrated circuit block that can adopt the merchant to sell fully, as long as it can realize all can using of its circuit function, it has asynchronous serial bus 15 to connect with microcontroller 7.Integrated circuit block 3 and 4 in this example all can be the common integrated circuit block that the merchant sells, as use ADE7754, have 24 pin, wherein 14～16 pin connect voltage input end 17～19 or current input terminal 20～22 respectively, control end is that 21 pin connect 8 or 9 control lines, and 22～24 pin connect the clock line 36 (connecing 23 pin) of synchronous serial bus 6, synchronous incoming line and output line 37,38.Integrated circuit blocks such as also available AT73C500, ADS7809 are as long as they can realize all can the using of function of circuit.Integrated circuit block 16 in this example all can be the common integrated circuit block that the merchant sells, as uses JINOU3263, has 20 pin, and wherein 5,6 pin connect the asynchronous incoming line and the output line 39,40 of asynchronous serial bus 15.Also available PTR2000, LT8030, D29DM, SR24G or the like integrated circuit block as long as their frequency is the integrated circuit block of 100MHz～4.2GHz wireless transmission, and can be realized all can using of its circuit function.The common microcontroller that this routine microcontroller 7 all can adopt the merchant to sell, as use EZ80F91, have 144 pin, wherein 114,115,116 pin connect incoming line 10, control line 8,9 respectively, and 103,106,107 pin connect the clock line 36 (connecing 103 pin) of synchronous serial bus 6, synchronous incoming line and output line 37 (106 pin), 38 (107 pin) respectively, and 73,74 pin connect the asynchronous incoming line and the output line 39,40 of asynchronous serial bus 15 respectively.Also available LPC2000, P89C51RDZ etc. are as long as they can realize that the function of microcontroller 7 needs all can use.Also be noted that: the merchant sells known common integrated circuit block 3,4,5,7,16 etc., do not provide in the drawings they biasing, power supply, the known technology content such as hold.
It is as follows that use is detected at the scene of the electric power meter in-situs tester that this is routine: the voltage transformer (VT) of electric energy metrical, current transformer are inserted on the detected electric power or electric energy circuit, and electrical energy pulse also connects.Detected three-phase alternating voltage U
a, U
b, U
cAnd electric current I
a, I
b, I
cEnter current detection section 3 and current detecting part 4 respectively by each incoming line, microcontroller 7 carries out the test item selection and makes detected information carry out mould---number conversion by integrated circuit block 3,4 by control line 8,9, the information of conversion enters by data bus 6 carries out computing in the microcontroller 7, can detect a series of electrical quantitys such as the real load of PT and CT.Also, calculate and a series of electrical quantitys such as error that relatively detect electric energy meter by electrical energy pulse.A ', b ', c ' point (being different from a, b, c point) that also available second electric power meter in-situs tester received the triple-phase line that first electric power meter in-situs tester detected to its voltage transformer (VT) detect and obtain this three-phase voltage U of 3
a' U
b' U
c', each incoming line by second enters current detection section 3 respectively, microcontroller 7 is by control line 8,9 carry out the test item selection and make detected information carry out mould---number conversion by integrated circuit block 3, the information of conversion enters by data bus 6 carries out computing in the microcontroller 7, the information that computing goes out is launched secondary voltage drop radio detection results by second communication data bus 15 and communication part (module) 16, received by first communication part (module), 16 wireless modes, arrive microcontroller 7 (first) through communication data bus 15, the information of voltage that detects with this machine (first) compares, and draws the ratio of relevant secondary voltage drop, series of results such as angular difference.Select and operation by keyboard 14, can select test item, electrical quantity, can show the project of detection, the result of electrical quantity, the project of printable detection, the result of electrical quantity.After detecting projects and result and finishing, unload the electric power meter in-situs tester and each detection piece gets final product from line of electric force.
Embodiment two. the electric power meter in-situs tester
This routine electric power meter in-situs tester concrete structure is united by Fig. 1～Fig. 6 and is illustrated.With different described in the example one be: 1. the electric power meter in-situs tester of this example can have the subsidiary capsule of secondary voltage drop wireless detection mechanism, and the possibility that makes an instrument carry out radio detection becomes a reality.Fig. 3, Fig. 4, Fig. 6 unite the housing 34 and panel 35 and 34 li secondary voltage drop wireless detection mechanism of assembling of housing that capsule is shown, and this mechanism includes secondary voltage drop detection module 28, wireless communication module 33, microcontroller 31.Secondary voltage drop detection module 28 is connected and forms with each sample circuit, treatment circuit, A/D change-over circuit function with each corresponding input end 25,26,27 by three groups of voltage transformer (VT), and the treatment circuit of this module is connected and formed by amplifying circuit, filtering circuit, phase lock circuitry, frequency multiplier circuit, shaping circuit function.And in this example, secondary voltage drop detection module 28 is that the integrated circuit block that is formed by functional circuits such as realization sample circuit, treatment circuit, A/D change-over circuits is that the master constitutes, the common integrated circuit block that can adopt the merchant to sell fully, as long as it can realize all can using of its circuit function, it has synchronous serial bus 41～43 to connect with microcontroller 31.Wireless communication module 33 by signal generating circuit, carrier current channel, radiating circuit or/and receiving circuit, antenna function connect and form, the signal generating circuit of this module is connected and is formed by crystal oscillating circuit, oscillatory circuit function, carrier current channel is connected and is formed by modulation circuit, mixting circuit, high frequency carrier circuit function, and wherein the input end of the output terminal of oscillatory circuit and carrier current channel connects together.Wireless communication module 33 in this example is or/and the integrated circuit block that functional circuits such as receiving circuit, antenna form is to lead to constitute by signal generating circuit, carrier current channel, radiating circuit, the common integrated circuit block that can adopt the merchant to sell fully, as long as it can realize all can using of its circuit function, it has asynchronous serial bus 44,45 to connect with microcontroller 31.Integrated circuit block 28 in this example can be the common integrated circuit block that the merchant sells, as use ADE7754, have 24 pin, wherein 14～16 pin connect voltage input end 25～27 respectively, control end is that 21 pin connection control line, 30,22～24 pin connect the clock line 41 (connecing 23 pin) of synchronous serial bus, synchronous incoming line and output line 42,43.Integrated circuit blocks such as also available AT73C500, ADS7809 are as long as they can realize all can using of its circuit function.Integrated circuit block 33 in this example all can be the common integrated circuit block that the merchant sells, as uses JINOU3263, has 20 pin, and wherein 5,6 pin connect the asynchronous incoming line and the output line 44,45 of asynchronous serial bus.Also available PTR2000, LT8030, D29DM, SR24G or the like integrated circuit block as long as their frequency is the integrated circuit block of 100MHz～4.2GHz wireless transmission, and can be realized all can using of its circuit function.The common microcontroller that this routine microcontroller 31 all can adopt the merchant to sell, as use EZ80F91, have 144 pin, wherein 115 pin connect control line 30, and 103,106,107 pin connect the clock line 41 (connecing 103 pin) of synchronous serial bus, synchronous incoming line and output line 42 (106 pin), 43 (107 pin) respectively, and 73,74 pin connect the asynchronous incoming line and the output line 44,45 of asynchronous serial bus respectively.Also available LPC2000, P89C51RDZ etc. are as long as they can realize that the function of microcontroller 7 needs all can use.Also be noted that: the merchant sells known common integrated circuit block 28,31,33 etc., do not provide in the drawings they biasing, power supply, the known technology content such as hold.2. can use second electric power meter in-situs tester in this routine capsule replacement example one when this routine electric power meter in-situs tester carries out electric energy metrical and detection at the scene, carry out on-the-spot detecting operation and can realize carrying out the secondary voltage drop radio detection with an instrument.What all the other were not stated is same as described in the example one entirely, no longer stating more.
Embodiment three. the electric power meter in-situs tester
This routine electric power meter in-situs tester concrete structure is united by Fig. 1, Fig. 2 and Fig. 5 or by Fig. 3, Fig. 4 and Fig. 6 and is illustrated.Different with example one and example two is: 1. the electric power meter in-situs tester of this example can just have been removed the current transformer, current detecting input end 20～22 and the current detection module 4 that detect current segment as the electric power meter in-situs tester of example one.2. but the external and internal compositions of the capsule of concrete structure Quan Tongyou in example two of this routine electric power meter in-situs tester is added with input end 23, the module 5 of electric energy detection part again, writing circuit that output comprises and printer thereof (not illustrating in the drawings), display circuit 11 and display 12 thereof---as LCD, appliance circuit and instrument thereof---voltage table, reometer are used for selecting and formations such as the keyboard 14 of operation detection, demonstration, printing and keyboard data bus 13.All the other are not stated is same as in the example one entirely, described in the example two, no longer stating more.
Embodiment four. the electric power meter in-situs tester
This routine electric power meter in-situs tester concrete structure is united by Fig. 1, Fig. 2 and Fig. 5 and is illustrated.Different with first three example is: this routine electric power meter in-situs tester can just have been removed the voltage transformer (VT), voltage detecting input end 17～19 and the voltage detection module 3 that detect voltage segment and constitute as the electric power meter in-situs tester of example one.All the other are not stated is same as in the example one entirely, in the example two, described in the example three, no longer stating more.
Claims (6)
1. electric power meter in-situs tester, include housing and control panel, the voltage transformer (VT) of electric energy metrical and current transformer, the voltage of the detection of assembling metering in the shell, electric current, energy information input and processing section, control section, output, communication part and their slave part, voltage wherein, electric current, the energy information importation comprises voltage, electric current, the multi-channel input of electric energy, multichannel detects change-over circuit and connects composition with the sequence circuit function, its processing section comprises the amplifying circuit of multiple sample information, filtering circuit, holding circuit, shaping circuit, A/D change-over circuit function connects to be formed, control section comprises microcontroller and auxiliary circuit thereof---interface circuit, control bus, keyboard, output comprises writing circuit and printer thereof, display circuit and display thereof, appliance circuit and instrument thereof, slave part comprises power supply and power circuit, and the electronic component of assembling described each circuit, device, assembly, parts, connector, circuit board, integrated circuit block, connecting conducting wire and cable, function connects package assembly and forms, be characterised in that: this electric power meter in-situs tester also includes the secondary voltage drop wireless detection mechanism, this mechanism includes the secondary voltage drop detection module, wireless communication module, secondary voltage drop detection module wherein, wireless communication module all connects with microcontroller, the secondary voltage drop detection module is by three groups of sample circuits that voltage transformer (VT) is corresponding with each, treatment circuit, A/D change-over circuit function connects to be formed, and wireless communication module is by signal generating circuit, carrier current channel, radiating circuit is or/and receiving circuit, antenna function connects to be formed.
2. the described electric power meter in-situs tester of root a tree name claim 1 is characterised in that:
A. described voltage, electric current, energy information multi-channel input include three-phase and four-line voltage input end, three-phase current pincers input end, electrical energy pulse input end;
B. it is that a program control conversion multi-way switch is the main circuit that constitutes that described multichannel detects change-over circuit, it is controlled by sequence circuit, and program control conversion multi-way switch includes the program control switch that detects voltage, electric current, power, power factor, electric energy, the real load of PT, the real load of CT, secondary voltage drop, no-load voltage ratio, ratio, angular difference.
3. the described electric power meter in-situs tester of root a tree name claim 2 is characterised in that:
A. described three-phase and four-line voltage input end, three-phase current pincers input end all are the input ends that multichannel detects change-over circuit; The electrical energy pulse input end connects with electric energy meter pulse information sampling end, and this end also connects with a control end of microcontroller behind phase inverter;
B. the program control end of described sequence circuit connects with another control end of microcontroller;
C. this electric power meter in-situs tester can have the subsidiary capsule of secondary voltage drop wireless detection mechanism.
4. the described electric power meter in-situs tester of root a tree name claim 3 is characterised in that:
The treatment circuit of a. described secondary voltage drop detection module is connected and is formed by amplifying circuit, filtering circuit, phase lock circuitry, frequency multiplier circuit, shaping circuit function;
B. described wireless communication module signal generating circuit is connected and is formed by crystal oscillating circuit, oscillatory circuit function, carrier current channel is connected and is formed by modulation circuit, mixting circuit, high frequency carrier circuit function, and wherein the input end of the output terminal of oscillatory circuit and carrier current channel connects together.
5. the described electric power meter in-situs tester of root a tree name claim 4 is characterised in that:
A. the integrated circuit block that described secondary voltage drop detection module is made up of sample circuit, treatment circuit, A/D change-over circuit function is that the master constitutes, and it has synchronous serial bus to connect with microcontroller;
B. or/and the integrated circuit block that receiving circuit, antenna function are formed is mainly to constitute, it has asynchronous serial bus to connect with microcontroller to described wireless communication module by signal generating circuit, carrier current channel, radiating circuit;
C. the integrated circuit block that described voltage detection module and current detection module all are made up of sample circuit, treatment circuit, A/D change-over circuit function is that the master constitutes, and they have synchronous serial bus to connect with microcontroller respectively.
6. the described electric power meter in-situs tester of root a tree name claim 5 is characterised in that:
A. described voltage detection module, current detection module, secondary voltage drop detection module all are that the integrated circuit block by analog to digital converter is mainly to constitute;
B. described wireless communication module all is that the integrated circuit block by the wireless transmission of 100MHz～4.2GHz is mainly to constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420016518 CN2704052Y (en) | 2004-06-30 | 2004-06-30 | In-situ detecting instrument for electric energy metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420016518 CN2704052Y (en) | 2004-06-30 | 2004-06-30 | In-situ detecting instrument for electric energy metering device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156274A (en) * | 2011-04-22 | 2011-08-17 | 四川电力科学研究院 | Field integral detecting system of three-phase electric energy measuring system of electric distribution network |
| CN101666827B (en) * | 2009-09-23 | 2011-09-07 | 广州从兴电子开发有限公司 | Electric-power metering automotive product with communication function |
| CN1936600B (en) * | 2005-09-23 | 2012-01-11 | 吴桂生 | Electric-power metering monitor |
| CN101685147B (en) * | 2008-09-22 | 2012-02-22 | 黑龙江省电力科学研究院 | Test device and method for simulating field electric energy measurement |
| CN101876694B (en) * | 2009-11-24 | 2012-10-03 | 湖北省电力试验研究院 | Configuration software based function detection device of multifunctional electric energy meter and method thereof |
| CN102809741A (en) * | 2012-08-14 | 2012-12-05 | 河南弘正电气科技有限公司 | Intelligent monitoring and managing information system for electric energy metering devices of substations |
| CN103424610A (en) * | 2012-05-23 | 2013-12-04 | 路华科技(深圳)有限公司 | Switch power-source precision testing power meter |
| CN103592615A (en) * | 2013-01-10 | 2014-02-19 | 国家电网公司 | Intelligent testing device of built-in load switch of electric energy meter |
| CN104316895A (en) * | 2014-10-28 | 2015-01-28 | 哈尔滨电工仪表研究所 | Single-phase and three-phase power meter detector |
| CN104597359A (en) * | 2015-02-07 | 2015-05-06 | 国家电网公司 | Networking-supportive electric energy measuring completion acceptance device |
| CN105295483A (en) * | 2015-12-04 | 2016-02-03 | 常熟市裕华计量检测咨询服务有限公司 | Measurement and detection instrument |
| CN106197561A (en) * | 2016-08-31 | 2016-12-07 | 南京隆远电气技术有限公司 | Electric power observation and control device |
| CN110058188A (en) * | 2019-05-24 | 2019-07-26 | 国网江苏省电力有限公司镇江供电分公司 | The active detector of electric energy metering device |
| CN113834968A (en) * | 2020-06-24 | 2021-12-24 | 宁波三星医疗电气股份有限公司 | Intelligent electric energy meter management system and method |
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| CN1936600B (en) * | 2005-09-23 | 2012-01-11 | 吴桂生 | Electric-power metering monitor |
| CN101685147B (en) * | 2008-09-22 | 2012-02-22 | 黑龙江省电力科学研究院 | Test device and method for simulating field electric energy measurement |
| CN101666827B (en) * | 2009-09-23 | 2011-09-07 | 广州从兴电子开发有限公司 | Electric-power metering automotive product with communication function |
| CN101876694B (en) * | 2009-11-24 | 2012-10-03 | 湖北省电力试验研究院 | Configuration software based function detection device of multifunctional electric energy meter and method thereof |
| CN102156274A (en) * | 2011-04-22 | 2011-08-17 | 四川电力科学研究院 | Field integral detecting system of three-phase electric energy measuring system of electric distribution network |
| CN102156274B (en) * | 2011-04-22 | 2012-10-03 | 四川电力科学研究院 | Field integral detecting system of three-phase electric energy measuring system of electric distribution network |
| CN103424610A (en) * | 2012-05-23 | 2013-12-04 | 路华科技(深圳)有限公司 | Switch power-source precision testing power meter |
| CN102809741A (en) * | 2012-08-14 | 2012-12-05 | 河南弘正电气科技有限公司 | Intelligent monitoring and managing information system for electric energy metering devices of substations |
| CN103592615A (en) * | 2013-01-10 | 2014-02-19 | 国家电网公司 | Intelligent testing device of built-in load switch of electric energy meter |
| CN103592615B (en) * | 2013-01-10 | 2016-04-20 | 国家电网公司 | The intelligent test device of the built-in on-load switch of a kind of electric energy meter |
| CN104316895A (en) * | 2014-10-28 | 2015-01-28 | 哈尔滨电工仪表研究所 | Single-phase and three-phase power meter detector |
| CN104597359A (en) * | 2015-02-07 | 2015-05-06 | 国家电网公司 | Networking-supportive electric energy measuring completion acceptance device |
| CN105295483A (en) * | 2015-12-04 | 2016-02-03 | 常熟市裕华计量检测咨询服务有限公司 | Measurement and detection instrument |
| CN106197561A (en) * | 2016-08-31 | 2016-12-07 | 南京隆远电气技术有限公司 | Electric power observation and control device |
| CN110058188A (en) * | 2019-05-24 | 2019-07-26 | 国网江苏省电力有限公司镇江供电分公司 | The active detector of electric energy metering device |
| CN113834968A (en) * | 2020-06-24 | 2021-12-24 | 宁波三星医疗电气股份有限公司 | Intelligent electric energy meter management system and method |
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