CN113009218A - Pulse group metering protection method for electric energy meter - Google Patents
Pulse group metering protection method for electric energy meter Download PDFInfo
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- CN113009218A CN113009218A CN201911321603.0A CN201911321603A CN113009218A CN 113009218 A CN113009218 A CN 113009218A CN 201911321603 A CN201911321603 A CN 201911321603A CN 113009218 A CN113009218 A CN 113009218A
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- metering
- magnetic isolation
- pulse group
- voltage
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000002955 isolation Methods 0.000 claims abstract description 27
- 238000005070 sampling Methods 0.000 claims abstract description 11
- 230000002159 abnormal effect Effects 0.000 claims abstract description 3
- 238000002474 experimental method Methods 0.000 claims abstract description 3
- 238000004891 communication Methods 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims 4
- 238000013461 design Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/063—Details of electronic electricity meters related to remote communication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a pulse group metering protection method for an electric energy meter, which is characterized by comprising the following steps of: the system comprises an ADC (analog to digital converter) sampling circuit, a magnetic isolation sending end, a magnetic isolation physical channel, a magnetic isolation receiving end, a metering module and a pulse group metering protection scheme, wherein the ADC sampling circuit is used for collecting voltage and current data, the magnetic isolation sending end is used for sending the voltage and current data collected by the ADC, the magnetic isolation physical channel is used for transmitting the voltage and current data, the magnetic isolation receiving end is used for receiving the voltage and current data, the metering module is used for realizing the metering function of an electric meter, and the pulse group metering protection scheme is used for protecting the metering abnormal problem in the pulse group experiment of the electric energy meter.
Description
Technical Field
The invention relates to a design of an electric energy meter metering scheme, and the metering protection method is suitable for the design of the electric energy meter metering scheme, can realize isolated transmission and high-speed communication on an ADC (analog-to-digital converter) sampling channel by using a matched software and hardware system, and greatly reduces the design cost while improving the isolation performance.
Background
The electric meter is an electric measuring device capable of measuring and transmitting the electricity consumption of users in an electric power system, and mainly obtains current and voltage analog quantity signals by sampling the current and the voltage of a power line of the electric power system in an analog quantity mode and then processes the analog quantity signals to obtain data information. In the process, links such as conventional ADC sampling, data transmission, digital signal processing and the like are eliminated, and the characteristics of the industrial environment of the running of the electric meter are considered, so that strong and weak current isolation protection is often needed, the phenomenon of strong current interference and weak current exists, and even potential safety hazards are hidden. In addition, the introduction of strong and weak galvanic isolation often requires the addition of related devices, thereby further increasing the cost of the solution and being not favorable for the market competition of products.
Disclosure of Invention
The invention aims to overcome the technical defects, and provides an electric energy meter pulse group metering protection method which can be used in cooperation with electric energy meter hardware, realizes strong and weak current isolation protection by introducing a magnetic isolation communication method, and avoids possible safety problems. Meanwhile, the magnetic isolation device has the functions of communication and power supply, the power supply design of peripheral devices of the whole scheme is simplified, the scheme cost is effectively reduced, and the scheme keeps equivalent market competitiveness.
The technical scheme of the invention is as follows: the system comprises an ADC (analog to digital converter) sampling circuit, a magnetic isolation sending end, a magnetic isolation physical channel, a magnetic isolation receiving end, a metering module and a pulse group metering protection scheme, wherein the ADC sampling circuit is used for collecting voltage and current data, the magnetic isolation sending end is used for sending the voltage and current data collected by the ADC, the magnetic isolation physical channel is used for transmitting the voltage and current data, the magnetic isolation receiving end is used for receiving the voltage and current data, the metering module is used for realizing the metering function of an electric meter, and the pulse group metering protection scheme is used for protecting the metering abnormal problem in the pulse group experiment of the electric energy meter.
Drawings
The attached drawing is an explanatory diagram of the electric energy meter pulse group metering protection method.
Detailed Description
The ADC sampling circuit in the attached drawing realizes analog sampling and digital conversion of the front end, the magnetic isolation sending end realizes a communication sending function, the magnetic isolation physical channel represents a wired transmission line, the magnetic isolation receiving end realizes a communication receiving function, and the metering module realizes a digital signal processing function.
Claims (4)
1. A pulse group metering protection method for an electric energy meter is characterized by comprising the following steps: the system comprises an ADC (analog to digital converter) sampling circuit, a magnetic isolation sending end, a magnetic isolation physical channel, a magnetic isolation receiving end, a metering module and a pulse group metering protection scheme, wherein the ADC sampling circuit is used for collecting voltage and current data, the magnetic isolation sending end is used for sending the voltage and current data collected by the ADC, the magnetic isolation physical channel is used for transmitting the voltage and current data, the magnetic isolation receiving end is used for receiving the voltage and current data, the metering module is used for realizing the metering function of an electric meter, and the pulse group metering protection scheme is used for protecting the metering abnormal problem in the pulse group experiment of the electric energy meter.
2. The electric energy meter pulse train metering protection method according to claim 1, characterized in that: the pulse group metering protection scheme comprises a communication error rate calculation method and a protection mechanism.
3. The communication error rate calculation method according to claim 2, wherein: the calculation mode adopts timer interruption mode statistics and is not influenced by non-interruption tasks.
4. The safeguard mechanism according to claim 2, characterized in that: the protection mechanism can be used for carrying out communication error rate calculation adjustment and whole hardware system error correction and adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911321603.0A CN113009218A (en) | 2019-12-20 | 2019-12-20 | Pulse group metering protection method for electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911321603.0A CN113009218A (en) | 2019-12-20 | 2019-12-20 | Pulse group metering protection method for electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113009218A true CN113009218A (en) | 2021-06-22 |
Family
ID=76381537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911321603.0A Withdrawn CN113009218A (en) | 2019-12-20 | 2019-12-20 | Pulse group metering protection method for electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113009218A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204377325U (en) * | 2015-02-12 | 2015-06-03 | 国家电网公司 | Interference prevention device and system thereof |
| CN106772210A (en) * | 2017-02-22 | 2017-05-31 | 国网上海市电力公司 | A kind of electronic electric energy meter electrical fast transient (eft) immunity test system |
| CN109166298A (en) * | 2018-09-02 | 2019-01-08 | 青岛鼎信通讯科技有限公司 | Electric energy meter of new generation based on the communication of magnetic coupling and single channel power supply export technique |
-
2019
- 2019-12-20 CN CN201911321603.0A patent/CN113009218A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204377325U (en) * | 2015-02-12 | 2015-06-03 | 国家电网公司 | Interference prevention device and system thereof |
| CN106772210A (en) * | 2017-02-22 | 2017-05-31 | 国网上海市电力公司 | A kind of electronic electric energy meter electrical fast transient (eft) immunity test system |
| CN109166298A (en) * | 2018-09-02 | 2019-01-08 | 青岛鼎信通讯科技有限公司 | Electric energy meter of new generation based on the communication of magnetic coupling and single channel power supply export technique |
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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: 20210622 |