CN112230033A - Electricity larceny prevention design under power failure state of electric energy meter - Google Patents
Electricity larceny prevention design under power failure state of electric energy meter Download PDFInfo
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- CN112230033A CN112230033A CN202010371040.2A CN202010371040A CN112230033A CN 112230033 A CN112230033 A CN 112230033A CN 202010371040 A CN202010371040 A CN 202010371040A CN 112230033 A CN112230033 A CN 112230033A
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- China
- Prior art keywords
- super capacitor
- power failure
- current detection
- condition
- electric energy
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/24—Arrangements for avoiding or indicating fraudulent use
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention mainly comprises two parts, namely a charging and discharging function of a super capacitor and a current detection function design under the condition of power failure. The charging and discharging function of the super capacitor mainly comprises a microcontroller MCU1, the super capacitor CR1, a charging unit CV1 and a discharging unit CF 1. The microcontroller MCU1 is a main control unit, PWM waves are generated after electrification, the super capacitor CR1 is charged through the charging unit CV1, and the energy of the super capacitor CR1 is always maintained at more than 95% by the microcontroller MCU1 after the super capacitor CR1 is charged. When in the discharging condition, the supercapacitor CR1 is discharged through the discharge cell CF 1. The current detection function under the power failure condition mainly comprises a microcontroller MCU1, a super capacitor CR1, a discharge unit CF1 and a current detection unit DET 1. After power failure occurs, in each detection period, the super capacitor CR1 supplies power to the current detection unit DET1 through the CF1, and the current detection unit DET1 stores data into the microcontroller MCU1 after completing current detection.
Description
Technical Field
The invention relates to an electricity larceny prevention design of an electric energy meter in a power failure state.
Background
The electric energy meter has the condition of artificial electricity stealing in field application, and when the electric energy meter is normally electrified, the electric energy meter has certain electricity stealing prevention capability, the technology industry is relatively mature, but the user can not perform electricity stealing prevention identification when the electricity meter is illegally short-circuited at the meter end under the condition of power failure.
Under the condition, an electricity stealing prevention design under the power failure condition of the electric energy meter is provided, and the electricity stealing prevention function under the power failure condition of the electric energy meter is realized.
Disclosure of Invention
The invention aims to provide an electricity stealing prevention design under the power failure condition of an electric energy meter, and the electricity stealing prevention function under the power failure condition of the electric energy meter is realized.
The invention designs and innovates the existing electric energy meter principle on the basis of comprehensively considering the design cost and the design difficulty.
The super capacitor of the energy storage device is adopted to realize power supply under the condition of power failure, and the PWM charging design of the super capacitor under the condition of strong power supply is designed, so that the super capacitor is ensured to be completely charged within 5 minutes, and meanwhile, the service life of the super capacitor is ensured not to be influenced by large-current charging.
The current detection design is to realize circuit sampling and current measurement of a sampling loop in 800-1200 mm under the condition of super capacitor power supply, and realize current storage in a microcontroller. Meanwhile, the detection period can be configured in a parameter mode so as to ensure flexible application under different application scenes.
Drawings
The figure is a charging and discharging principle block diagram of the super capacitor.
Detailed Description
As shown in the figure, the invention mainly comprises two parts, namely a charging and discharging function of the super capacitor and a current detection function design under the power failure condition.
The charging and discharging function of the super capacitor mainly comprises a microcontroller MCU1, the super capacitor CR1, a charging unit CV1 and a discharging unit CF 1. The microcontroller MCU1 is a main control unit, PWM waves are generated after electrification, the super capacitor CR1 is charged through the charging unit CV1, and the energy of the super capacitor CR1 is always maintained at more than 95% by the microcontroller MCU1 after the super capacitor CR1 is charged. When in the discharging condition, the supercapacitor CR1 is discharged through the discharge cell CF 1.
The current detection function under the power failure condition mainly comprises a microcontroller MCU1, a super capacitor CR1, a discharge unit CF1 and a current detection unit DET 1. After power failure occurs, in each detection period, the super capacitor CR1 supplies power to the current detection unit DET1 through the CF1, and the current detection unit DET1 stores data into the microcontroller MCU1 after completing current detection.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (3)
1. The utility model provides an anti-electricity-theft design of electric energy meter power failure state which characterized in that: a. providing a principle design for preventing electricity stealing; b. transient current detection can be performed at regular time under the condition of power failure of the electric energy meter; c. and storing the detected result in an event form, and actively reporting the result when the power is turned on next time.
2. The design of the super capacitor energy storage device for power supply under power failure condition as claimed in claim 1, wherein the super capacitor energy storage device is used for storing energy under alternating current power supply condition, and the current detection function is started at a certain detection frequency under power failure condition to detect the current of the sampling loop in real time and store data, and actively report in the form of event when the super capacitor energy storage device is powered on next time.
3. The method as claimed in claim 1, wherein the time of current detection in the power failure condition is controlled by a microcontroller of the electric energy meter, and the detection time is guaranteed to be completed within 800ms to 1200ms, so that the normal operation of the detection function within a period of time is fully guaranteed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010371040.2A CN112230033A (en) | 2020-05-06 | 2020-05-06 | Electricity larceny prevention design under power failure state of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010371040.2A CN112230033A (en) | 2020-05-06 | 2020-05-06 | Electricity larceny prevention design under power failure state of electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112230033A true CN112230033A (en) | 2021-01-15 |
Family
ID=74111286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010371040.2A Withdrawn CN112230033A (en) | 2020-05-06 | 2020-05-06 | Electricity larceny prevention design under power failure state of electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112230033A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202102021U (en) * | 2011-05-17 | 2012-01-04 | 华立仪表集团股份有限公司 | Electric energy meter |
| CN104237588A (en) * | 2014-08-27 | 2014-12-24 | 深圳供电局有限公司 | Anti-electricity-theft batch meter image acquisition device |
| CN204231004U (en) * | 2014-11-18 | 2015-03-25 | 杭州海兴电力科技股份有限公司 | Power control circuit |
| CN206807114U (en) * | 2017-05-08 | 2017-12-26 | 浙江树人学院 | The full decompression detection metering chip power supply circuit of three-phase intelligent ammeter |
| CN110515030A (en) * | 2019-09-03 | 2019-11-29 | 国网青海省电力公司电力科学研究院 | A kind of simulation detection system automating power failure reporting functions |
| CN110873821A (en) * | 2018-09-02 | 2020-03-10 | 青岛鼎信通讯科技有限公司 | Function design of electricity meter capable of preventing electricity stealing during zero line dropping measurement |
| CN210380379U (en) * | 2019-06-26 | 2020-04-21 | 徐国惠 | Power failure fault automatic monitoring device for power supply system |
| CN111082836A (en) * | 2019-11-18 | 2020-04-28 | 国网河北省电力有限公司电力科学研究院 | Intelligent detection device and method for power failure of HPLC communication unit |
-
2020
- 2020-05-06 CN CN202010371040.2A patent/CN112230033A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202102021U (en) * | 2011-05-17 | 2012-01-04 | 华立仪表集团股份有限公司 | Electric energy meter |
| CN104237588A (en) * | 2014-08-27 | 2014-12-24 | 深圳供电局有限公司 | Anti-electricity-theft batch meter image acquisition device |
| CN204231004U (en) * | 2014-11-18 | 2015-03-25 | 杭州海兴电力科技股份有限公司 | Power control circuit |
| CN206807114U (en) * | 2017-05-08 | 2017-12-26 | 浙江树人学院 | The full decompression detection metering chip power supply circuit of three-phase intelligent ammeter |
| CN110873821A (en) * | 2018-09-02 | 2020-03-10 | 青岛鼎信通讯科技有限公司 | Function design of electricity meter capable of preventing electricity stealing during zero line dropping measurement |
| CN210380379U (en) * | 2019-06-26 | 2020-04-21 | 徐国惠 | Power failure fault automatic monitoring device for power supply system |
| CN110515030A (en) * | 2019-09-03 | 2019-11-29 | 国网青海省电力公司电力科学研究院 | A kind of simulation detection system automating power failure reporting functions |
| CN111082836A (en) * | 2019-11-18 | 2020-04-28 | 国网河北省电力有限公司电力科学研究院 | Intelligent detection device and method for power failure of HPLC communication unit |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210115 |