CN112147567A - Intelligent ammeter with self-checking function and ammeter checking method - Google Patents
Intelligent ammeter with self-checking function and ammeter checking method Download PDFInfo
- Publication number
- CN112147567A CN112147567A CN202011038678.0A CN202011038678A CN112147567A CN 112147567 A CN112147567 A CN 112147567A CN 202011038678 A CN202011038678 A CN 202011038678A CN 112147567 A CN112147567 A CN 112147567A
- Authority
- CN
- China
- Prior art keywords
- detection
- self
- circuit
- power
- checking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
- G01R35/007—Standards or reference devices, e.g. voltage or resistance standards, "golden references"
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention relates to an intelligent ammeter with a self-checking function and an ammeter checking method, wherein the intelligent ammeter comprises a meter body and a detection circuit arranged in the meter body, a self-checking button is arranged outside the meter body, and the detection circuit is set as follows: and only when the self-test button is triggered, the detection circuit is connected to the input circuit for detection. In the scheme of the invention, the detection circuit is arranged in the meter body, and the self-detection button is configured, so that the automatic detection can be realized only by triggering the self-detection button, the meter does not need to be disassembled, the operation is simple, the detection efficiency is greatly improved, the professional is not needed for checking, and the labor cost is reduced.
Description
Technical Field
The invention relates to the technical field of electric meters, in particular to an intelligent electric meter with a self-checking function and an electric meter checking method.
Background
Under the promotion of the smart power grid, the user has higher and higher requirements on how to quickly improve the metering accuracy of the smart electric meter. Due to the technical limitation, the existing intelligent electric meter can only verify the error of the electric meter through the pulse output interface, and the meter verification can be realized in such a way, but the defects exist at the same time. For example, the meter needs to be detached from the electric meter box and then sent to a professional detection department for verification, and the operation is troublesome; the metering calibration time of the intelligent electric meter is too long, and particularly under the condition that the number of the intelligent electric meters is large, the working efficiency is low in the actual use process. In addition, the existing meter verification is performed by staff of a detection department, and is usually performed regularly, so that the user cannot perform verification when finding that the meter may have metering inaccuracy.
Disclosure of Invention
The invention aims to provide an intelligent ammeter with a self-checking function and an ammeter checking method, which can realize automatic calibration and improve efficiency.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
the invention provides an intelligent ammeter with a self-checking function, which comprises a meter body and a detection circuit arranged in the meter body, wherein a self-checking button is arranged outside the meter body, and the detection circuit is set as follows: and only when the self-test button is triggered, the detection circuit is connected to the input circuit for detection.
In the above scheme, through setting up detection circuitry inside the table utensil body, as long as trigger the self-checking button and can realize automated inspection, need not to demolish the table utensil, easy operation, and greatly improved detection efficiency, in addition, the user can calibrate, need not the professional and check up, has greatly reduced the cost of labor.
In one embodiment, the detection circuit is a power detection circuit. Power detection has a higher reliability than current or voltage detection.
Preferably, the power detection circuit comprises a standard power resistor and a processor, and the processor is used for recording the detection power of the standard power resistor in a set time period and taking the difference value between the detection power and a set value as a verification error.
In the scheme, the detection power is acquired for a period of time and compared with a set value, and compared with the instantaneous power, the method has higher reliability and improves the accuracy of the detection result. The scheme solves the problem of how to improve the accuracy of the detection result.
The standard power resistor is multiple. Furthermore, in the plurality of standard power resistors, the resistance value of each standard power resistor is different, and the detection power of each standard power resistor in the set time is detected during detection.
In the above scheme, a plurality of standard power resistors are arranged for detection, for example, the highest difference value may be used as a verification error, for example, the average difference value may also be used as a verification error, and the accuracy of the detection result may be improved by integrating a plurality of detection results, so that the inaccuracy of the detection result due to the standard power resistors is avoided. When the resistance values of the standard power resistors are different, the detection precision can be further improved.
Preferably, the power detection circuit further comprises a rectification circuit and an inverter circuit, the input circuit is connected to the rectification circuit, the rectification circuit is connected to the inverter circuit, and the output of the inverter circuit is connected to the standard power resistor.
In the above scheme, during self-checking, the input circuit is connected to the rectifying circuit, and is connected to the inverter circuit after rectification, so that a standard alternating voltage signal can be realized, the standard power resistor is connected to the standard alternating voltage signal, and the accuracy of a detection result can be further improved.
The invention also provides an ammeter calibration method based on the intelligent ammeter with the self-checking function.
The method further comprises the following steps: and detecting the power consumption power in real time, comparing the power consumption power with a power threshold, and if the power consumption power is lower than the power threshold and the duration time exceeds a time threshold, automatically triggering a detection circuit to be connected into an input circuit for detection. By setting low power detection, when the power consumption and time of a user meet the conditions, a self-detection function is started so as to find out meter faults in time.
The method further comprises the following steps: the timing trigger detection circuit is connected to the input circuit for detection. Through remote control, the electric power department can regularly realize the self-checking of whole smart electric meters and decide, avoids because stealing electric action or ammeter trouble and cause the loss.
Compared with the prior art, the intelligent ammeter provided by the invention has the advantages that the detection circuit is arranged in the meter body, the automatic detection can be realized only by triggering the self-detection button, the meter does not need to be detached, the operation is simple, the detection efficiency is greatly improved, in addition, a user can carry out calibration, a professional does not need to carry out verification, and the labor cost is greatly reduced. In addition, the accuracy of the detection result can be improved by setting a plurality of standard power resistors or detecting the power for a period of time.
Other technical advantages of the present invention will be set forth in the following examples.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic diagram of an intelligent electric meter with a self-checking function in an embodiment.
Fig. 2 is a schematic diagram of another smart meter with self-checking function in the embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The devices of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment provides an intelligent ammeter with self-checking function, place in including the table utensil body in and the detection circuitry of table utensil body, table utensil body outside is provided with the self-checking button, detection circuitry is set up to: and only when the self-test button is triggered, the detection circuit is connected to the input circuit for detection.
The self-test button can be a touch button or a mechanical button.
Referring to fig. 1 or fig. 2, in the normal state, the input circuit is connected to the external output circuit, and when the user or the worker presses the self-checking button, the self-checking button is immediately triggered, the input circuit is disconnected from the external output circuit, and the input circuit is connected to the detection circuit, so that the detection is realized.
As shown in fig. 1, in the present embodiment, the detection circuit is a power detection circuit, and includes a standard power resistor R and a processor. The meter body comprises a current transformer TA, a voltage transformer TV and a relay KPL, the relay is preferably a pulse relay, the control end of the relay is connected with the processor, and the controlled end (or called controlled end) is connected with the detection circuit. When the normally closed contact of the relay is turned on, the input circuit turns on the external output circuit, and power detection is not performed. When the normally open contact of the relay is switched on, the input circuit is switched on the standard power resistor, namely, the power detection circuit is switched on to detect the power, at the moment, the processor is used for recording the detection power of the standard power resistor in a set time period, and the difference value between the detection power and a set value is used as a detection error.
The processor selected in this embodiment has a timing function, and if the processor does not have the timing function, a separate timer is required to record the operating time of the power detection circuit.
The processor may be a processor provided for self-test or a processor provided in the original meter body.
When a plurality of standard power resistors are adopted, preferably, the resistance value of each standard power resistor is different, and during detection, the detection power of each standard power resistor in a set time is respectively sampled.
At this time, when the error is determined, the average value of a plurality of detection powers can be used as the final detection power, and then the detection power is differed from the set value to obtain the verification error; or respectively subtracting each detection power from a set value, and taking the maximum difference value as the final verification error. By arranging a plurality of standard power resistors, the problem that a detection result is inaccurate due to the fault of one standard power resistor can be avoided.
As shown in fig. 2, in a more optimized scheme, the power detection circuit may further include a rectifying circuit (or called as a rectifying module) and an inverting circuit (or called as an inverting module), the input circuit is connected to the rectifying circuit, the rectifying circuit is connected to the inverting circuit, and an output of the inverting circuit is connected to the standard power resistor. As shown in fig. 2, at this time, there are two relays KPL, one of which is connected to the input terminal of the rectifying circuit, and the other of which is connected to the output terminal of the inverter circuit. The relay KPL can be a pulse relay, and when the processor receives a self-checking command, the relay KPL is controlled to be switched on, so that the power self-checking circuit can be switched on. When self-checking is performed, the input circuit is connected into the rectifying circuit and is connected into the inverter circuit after rectification, so that a standard alternating voltage signal can be realized, the standard power resistor is connected into the standard alternating voltage signal, and the accuracy of a detection result can be further improved.
Adopt above-mentioned smart electric meter with self-checking function to realize automatic check-up, and can trigger the self-checking through following three kinds of modes:
(1) the detection circuit is triggered to be connected into the input circuit by operating (for example, pressing) the self-detection button, the detection value of the detection circuit in a set time period is recorded, and the difference value between the detection value and a set value is used as a verification error.
The mode can realize detection at any time, for example, a user can detect when perceiving that the electric quantity metering is possibly inaccurate, and can find whether the electric meter has a fault in time, so that the timeliness of electric meter detection is improved.
(2) And detecting the power consumption power in real time, comparing the power consumption power with a power threshold, and if the power consumption power is lower than the power threshold and the duration time exceeds a time threshold, automatically triggering a detection circuit to be connected into an input circuit for detection.
By setting low power detection, when the power consumption and time of a user meet the conditions, a self-detection function is started so as to find out meter faults in time.
(3) The timing trigger detection circuit is connected to the input circuit for detection. That is, when the timer records that the current time is the set detection time, the automatic trigger detection circuit is connected to the input circuit for detection. Through timing detection, the electric power department can regularly realize the self-checking of whole smart electric meters and decide, avoids causing the loss because of stealing electric action or ammeter trouble.
Multiple detection mode can make smart electric meter more have the suitability, also facilitates for the user.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides an intelligent ammeter with self-checking function, includes the table utensil body, its characterized in that still places in including the detection circuitry of table utensil body, table utensil body outside is provided with the self-checking button, detection circuitry is set up to: and only when the self-test button is triggered, the detection circuit is connected to the input circuit for detection.
2. The smart meter with the self-checking function according to claim 1, wherein the detection circuit is a power detection circuit.
3. The smart meter with the self-checking function according to claim 2, wherein the power detection circuit comprises a standard power resistor and a processor, and the processor is configured to record a detection power of the standard power resistor within a set time period and use a difference value between the detection power and a set value as a checking error.
4. The smart meter with self-checking function according to claim 3, wherein the standard power resistor is plural.
5. The smart meter with the self-checking function according to claim 4, wherein the resistance value of each of the plurality of standard power resistors is different, and the detection power of each of the standard power resistors within a set time is detected during the detection.
6. The smart meter with the self-checking function according to claim 3, wherein the power detection circuit further comprises a rectifying circuit and an inverting circuit, the input circuit is connected to the rectifying circuit, the rectifying circuit is connected to the inverting circuit, and the output of the inverting circuit is connected to the standard power resistor.
7. An electric meter calibration method implemented by an intelligent electric meter with a self-checking function according to any one of claims 1 to 6, characterized in that the detection circuit is triggered to be connected to the input circuit by operating the self-checking button, the detection value of the detection circuit within a set time period is recorded, and the difference between the detection value and a set value is used as a calibration error.
8. The method of claim 7, wherein the power usage is detected in real time and compared to a power threshold, and wherein the detection circuit is automatically triggered to access the input circuit for detection if the power usage is below the power threshold and the duration exceeds a time threshold.
9. The method of claim 7, wherein the timing trigger detection circuit is coupled to the input circuit for detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011038678.0A CN112147567A (en) | 2020-09-28 | 2020-09-28 | Intelligent ammeter with self-checking function and ammeter checking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011038678.0A CN112147567A (en) | 2020-09-28 | 2020-09-28 | Intelligent ammeter with self-checking function and ammeter checking method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112147567A true CN112147567A (en) | 2020-12-29 |
Family
ID=73894869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011038678.0A Pending CN112147567A (en) | 2020-09-28 | 2020-09-28 | Intelligent ammeter with self-checking function and ammeter checking method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112147567A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089265A (en) * | 2021-12-01 | 2022-02-25 | 国网江苏省电力有限公司营销服务中心 | Automatic timing remote ammeter detection device and detection method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201583647U (en) * | 2009-10-31 | 2010-09-15 | 西北电网有限公司 | Long-distance online detecting system for substation gate electric energy meter |
| CN201662592U (en) * | 2010-04-23 | 2010-12-01 | 江苏科技大学 | Intelligent extra-high voltage electroscope |
| CN102053201A (en) * | 2009-10-31 | 2011-05-11 | 郑州三足科技发展有限公司 | Multi-channel field standard electrical energy meter |
| CN102053237A (en) * | 2009-10-31 | 2011-05-11 | 郑州三足科技发展有限公司 | Remote on-line detection system of electric energy metering device |
| CN103018612A (en) * | 2012-12-31 | 2013-04-03 | 国家电网公司 | Full-function electric-energy quality comprehensive test platform |
| CN203396938U (en) * | 2013-05-20 | 2014-01-15 | 国家电网公司 | Intelligent electric energy meter with remote calibration device |
| CN107748346A (en) * | 2017-10-11 | 2018-03-02 | 国网江西省电力公司电力科学研究院 | A kind of high voltage electric energy error detection method under load containing DC component |
| CN110083071A (en) * | 2019-04-28 | 2019-08-02 | 泰康保险集团股份有限公司 | Intelligent building implementation method, device, medium and electronic equipment |
| CN210136299U (en) * | 2019-04-18 | 2020-03-10 | 青岛高科通信股份有限公司 | Intelligent electric meter |
| CN111175689A (en) * | 2020-02-29 | 2020-05-19 | 国网河南省电力公司漯河供电公司 | Quick electric energy meter calibration device and use method |
| CN111323644A (en) * | 2020-03-17 | 2020-06-23 | 陶齐雄 | Intelligent monitoring method and system based on electric energy meter |
-
2020
- 2020-09-28 CN CN202011038678.0A patent/CN112147567A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201583647U (en) * | 2009-10-31 | 2010-09-15 | 西北电网有限公司 | Long-distance online detecting system for substation gate electric energy meter |
| CN102053201A (en) * | 2009-10-31 | 2011-05-11 | 郑州三足科技发展有限公司 | Multi-channel field standard electrical energy meter |
| CN102053237A (en) * | 2009-10-31 | 2011-05-11 | 郑州三足科技发展有限公司 | Remote on-line detection system of electric energy metering device |
| CN201662592U (en) * | 2010-04-23 | 2010-12-01 | 江苏科技大学 | Intelligent extra-high voltage electroscope |
| CN103018612A (en) * | 2012-12-31 | 2013-04-03 | 国家电网公司 | Full-function electric-energy quality comprehensive test platform |
| CN203396938U (en) * | 2013-05-20 | 2014-01-15 | 国家电网公司 | Intelligent electric energy meter with remote calibration device |
| CN107748346A (en) * | 2017-10-11 | 2018-03-02 | 国网江西省电力公司电力科学研究院 | A kind of high voltage electric energy error detection method under load containing DC component |
| CN210136299U (en) * | 2019-04-18 | 2020-03-10 | 青岛高科通信股份有限公司 | Intelligent electric meter |
| CN110083071A (en) * | 2019-04-28 | 2019-08-02 | 泰康保险集团股份有限公司 | Intelligent building implementation method, device, medium and electronic equipment |
| CN111175689A (en) * | 2020-02-29 | 2020-05-19 | 国网河南省电力公司漯河供电公司 | Quick electric energy meter calibration device and use method |
| CN111323644A (en) * | 2020-03-17 | 2020-06-23 | 陶齐雄 | Intelligent monitoring method and system based on electric energy meter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089265A (en) * | 2021-12-01 | 2022-02-25 | 国网江苏省电力有限公司营销服务中心 | Automatic timing remote ammeter detection device and detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107271896B (en) | Safety relay testing device and testing method thereof | |
| CN202102074U (en) | Ekl fault indicator | |
| JP2009063584A (en) | Battery capacity detector | |
| CN110764014A (en) | Method and device for detecting short circuit in battery, terminal and readable storage medium | |
| CN103632521A (en) | Electricity consumption information collection and fault detection system and local channel detection method thereof | |
| CN112147567A (en) | Intelligent ammeter with self-checking function and ammeter checking method | |
| CN107656213B (en) | Intelligent test method and system for battery core | |
| CN210136299U (en) | Intelligent electric meter | |
| US4881072A (en) | Device for remote metering | |
| CN203588444U (en) | Fault detection system for electricity consumption information collection | |
| CN113777452B (en) | DC system grounding test device and method for voltage self-adaptive station | |
| CN204964716U (en) | Lithium cell group activation tester | |
| CN214122341U (en) | Rod position detector testing device and rod position detector tester | |
| CN114578280A (en) | Intelligent ammeter fault determination method and device, computer equipment and storage medium | |
| US10637259B2 (en) | Charging control system and short-circuit current protecting method thereof | |
| CN112068067A (en) | On-load error detection system of epitope isolation transformer of assembly line metrological verification device | |
| CN111812576A (en) | System and method for adjusting transformer board of relay protection device | |
| CN117805715B (en) | Smart jack, calibration detection method, device and product thereof | |
| CN116148755B (en) | Detection circuit, single-phase intelligent meter and detection method | |
| CN208795786U (en) | Adaptive metering fault load records equipment and system | |
| CN105841776A (en) | Water level detection circuit, self-checking method thereof, and cooking utensil | |
| CN218584947U (en) | High-speed sampling device for relay action process | |
| CN216526232U (en) | Transformer secondary side multiple spot ground fault monitoring devices | |
| CN216434324U (en) | Electric leakage monitoring device for outputting PWM signals | |
| CN108896814B (en) | Voltage sampling circuit and sampling method of internal power supply of power consumption device and electric energy meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201229 |