WO2018072455A1 - Electric energy meter, checking method therefor, and storage medium - Google Patents

Abstract

An electric energy meter of which the metering portion and the management portion are independent of each other, comprising a metering control module (10) and a management control module (20), the metering control module (10) being configured to collect and calculate electric energy data, and send the acquired calculated electric energy data to the management control module (20); and the management control module (20) being configured to realize billing rate control and calculate billing data according to the billing rate and the received electric energy data. Further provided are a checking method for the electric energy meter and a computer storage medium.

Description

Electric energy meter and verification method thereof, storage medium

The present application is based on a Chinese patent application filed on Jan. 17, 2016, the entire disclosure of which is hereby incorporated by reference.

Technical field

The invention relates to the field of electric service, and particularly relates to an electric energy meter with a metering part and a management part, a verification method thereof and a storage medium.

Background technique

The electric energy meter is a meter used to measure electric energy, and is also called an electric meter, a fire meter, a kilowatt hour meter, and a meter for measuring various electric quantities. According to the requirements of the IR46 standard, that is, the international recommendations issued by the International Legal Metrology Organization, if the electric energy meter as a measuring instrument changes in structure and procedure, it should be re-evaluated. This means that the electric energy meter program cannot be arbitrarily upgraded online. The design scheme of the existing smart energy meter is to design functions for measurement, storage, clock, display, billing, fee control, communication, event recording, remote upgrade, etc. as a whole, and once the subsequent functions need to be changed, it will have to be replaced again. The electric energy meter causes great waste. At the same time, the existing energy meter will directly affect the accuracy of the metering part when the software or hardware encounters a loophole, resulting in the power not being traced and easily causing power disputes. With the liberalization of the national electricity market, the future energy billing methods are diversified, and the characteristics of uncertainty make the contradiction between the management department's curing requirements and the user's functional requirements constantly changing. Therefore, it is necessary to meet the needs of the current situation. Electric energy meter.

Summary of the invention

In view of the above problems, embodiments of the present invention have been proposed in order to provide an electric energy meter and an inspection thereof that are independent of the metering part and the management part, which overcomes the above problems or at least partially solves the above problems. Certificate method and computer storage medium.

According to an aspect of an embodiment of the present invention, an energy meter that is independent of a metering part and a management part is provided, including a metering control module and a management control module.

The metering control module is configured to collect and calculate power data, and send the collected and calculated power data to the management control module;

The management control module is configured to implement rate control, and calculates charging data according to the rate and the received power data.

Optionally, the power data includes a positive active energy, a reverse active energy, and a basic power freezing time, wherein a freezing time corresponding to each freezing point is not greater than a first preset time, and the storage depth of the power data is not Less than the second preset duration.

Optionally, the metering control module includes:

The acquisition calculation unit is configured to collect and calculate the electric energy data, directly collect the voltage and current data by using the metering chip, and calculate the electric energy according to the collected voltage and current data;

a data communication unit configured to send the power data to the management control module or to trace and check the power data;

And a metering MCU configured to control the collection calculation unit and the data communication unit, and perform information interaction with the management control module by using the data communication unit.

Optionally, the metering control module further includes:

a clock unit configured to provide a time reference for the time-stamped power storage in the metering control module, and when the timing standard of the management control module adopts a segmented timing charge, switch the charging standard for different time periods according to the clock unit ;

The management control module is configured to process and store the rate and power according to the current time of the metering control module.

Optionally, the clock unit is powered by a replaceable clock battery or a super capacitor.

Optionally, the metering control module further includes:

And a metering storage unit configured to store in real time the power data generated by the acquisition computing unit and the time-stamped power generated by the time provided by the clock unit.

Optionally, the management control module includes:

a rate calculation unit configured to control the rate and calculate billing data based on the received power data; and perform data update of the power data and/or the billing data to update the data After the operation ends, the charging data is checked by using the power data;

The remote communication unit is configured to implement information exchange between the management control module and the communication terminal and the metering control module, and receive an energy meter data update sent by the communication terminal when the power meter function requirement is changed. The operation is concurrently sent to the management MCU for a program update operation;

The management micro control unit MCU is configured to control the rate calculation unit and the remote communication unit and perform data interaction with the remote communication unit.

Optionally, the management control module further includes:

A billing storage unit configured to store rate energy, energy meter event records, and underlying freeze data.

Optionally, the management control module further includes:

A human-computer interaction unit configured to perform liquid crystal display and/or voice prompts for data or operations.

Optionally, the metering control module and the management control module are independent pluggable modules, and are connected through a pluggable communication interface.

Optionally, the electric energy meter further includes one or more of the following components:

The card area is configured to be inserted into the purchase card;

The module communication interface is configured to read energy meter energy, real-time parameters, event records, and freeze data to implement setting of energy meter parameters and remote upgrade;

The encryption/decryption module is configured to encrypt or decrypt the communication information of the electric energy meter;

a trip light configured to indicate a current state, the indication current state including at least: When the light is on, it indicates a trip.

According to another aspect of the embodiments of the present invention, there is also provided a method for verifying an electric energy meter, the method comprising:

Reading the basic frozen electric energy W _i in the metering control module unit time in the above electric energy meter, and calculating the electric energy consumption error γ _{i of} the electric energy meter to be tested;

Wherein, W _i is the basis of the metering control module for freezing the electric energy per unit time ΔT in the time of T min, i=1, 2, 3...(T-1), and ΔW ₀ is the standard table electric energy in the time of T min The value is the average value in unit time ΔT, and γ ₀ is the systematic error of the standard table;

Determining, according to γ _{i ,} whether the basic frozen electric energy of the electric energy meter meets the inspection requirement, and when γ _i does not exceed the predetermined error, the basic frozen electric energy of the electric energy meter meets the inspection requirement, and the rate control electric energy of the management control module of the electric energy meter is read. ;

Calculate the difference δ between the rate energy and the base frozen energy,

δ=(W _T '-W ₀ ')-(W _T -W ₀ )

Wherein, W _T ' is the rate power indication value of the T-time management control module; W ₀ ' is the rate power value of the management control module at the starting time; W _T is the metering control module of the T time The base frozen power indication value; the base frozen power indication value of the metering control module at the start time of W ₀ ;

Determining, according to δ, whether the rate electric energy of the electric energy meter meets the inspection requirement, and when δ does not exceed b×10 ^-α , the rate electric energy of the electric energy meter meets the inspection requirement, wherein b is the calibrator magnification, α is Decimal scale;

The billing data is calculated according to the rate electric energy and the current operating rate period table and the ladder table of the electric energy meter.

Yet another aspect of an embodiment of the present invention provides a computer storage medium, the computer storage Computer executable instructions are stored in the medium for executing the verification method of the above energy meter.

The electric energy meter provided by the embodiment of the invention is at least divided into a metering control module and a management control module, and the metering control module is configured to perform energy data collection and calculation. The management control module is configured to implement rate calculation and other extended functions based on the energy data, and obtain the billing data, which obviously realizes the separation of the billing management and the metering collection, so that the metering control module for calculating the energy data can be separately performed. And the management control module for determining the billing data is upgraded and updated, thereby solving the problem that the smart energy meter management function needs to be continuously improved in the prior art, and the management part and the metering part mutually influence each other, and overcoming the existing replacement of the electric energy meter The method is to meet the customer's demand for changing the function of the electric energy meter, solves the defect that the electric energy meter has high update cost and the cumbersome upgrade process, and increases the operational stability of the electric energy meter, and the reliability and traceability of the measurement part data.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying for creative labor.

FIG. 1 is a schematic diagram of the principle of an energy meter independently of a metering part and a management part according to an embodiment of the present invention.

detailed description

In order to facilitate the understanding of the embodiments of the present invention, the embodiments of the present invention are illustrated by the accompanying drawings. The invention is defined.

According to an aspect of an embodiment of the present invention, as shown in FIG. 1, a metering portion and a tube are provided A partially independent power meter, including a metering control module 10 and a management control module 20, wherein:

The metering control module 10 is configured to collect and calculate the power data, and send the collected and calculated power data to the management control module 20. For example, the metering control module 10 can use the HT6019 series single chip microcomputer. The basic energy data provided by the metering control module 10 includes positive active energy, reverse active energy, and basic energy freezing time. Each freezing point is no more than 5 minutes (min), and the storage depth is not less than 1 year. The freezing point may include at least: a freezing point of the basic electric energy, and a freezing time of each of the freezing points is not longer than a first preset duration of 5 minutes, and the first preset duration may be 4 minutes, 6 minutes, or the like. Value.

The storage depth may be a continuous storage time of the power data, the storage depth is not less than one second, and the second preset duration may be other presets such as 2 years, 3 years, or half a year. The length of time.

Optionally, the metering control module 10 further includes:

A metering MCU (Microcontroller Unit) 15 is configured to control other functional units in the metering control module and perform information interaction through the data communication unit 16. The other functional units here include at least the acquisition calculation unit 11 and the data communication unit 16. The metering MCU can perform information interaction with the management control module 20 through the data communication unit 16, and can also perform information interaction according to the communication terminal. The terminal may include: an uplink communication terminal located on the network side to control the metering MCU.

The acquisition calculation unit 11 is configured to collect and calculate electrical energy data. The acquisition calculation unit 11 directly collects voltage and current data by using the metering chip and calculates the electric energy according to the collected voltage and current data. The metering chip can adopt a metering chip or circuit such as an ATT7026 three-phase energy metering chip.

The data communication unit 16 is configured to transmit power data to the management control module 20 or to trace and check the power data. Optionally, the data communication unit 16 can also be configured to perform real-time copying of the power data of the acquisition computing unit 11 through the remote terminal or the communication terminal, so as to facilitate the remote The verification or supervision of the terminal or the communication terminal, when the regulatory department checks the electric energy meter or when the user disputes the charging data of the electric energy table, the charging data of the management control module 20 is verified according to the electric energy data, for example, The basic energy freezing data is read, which facilitates the supervision of the measurement management department and the verification of the accounting information of the management control module 20. For example, the data communication unit 16 transmits the power data collected by the acquisition calculation unit 11 to the remote terminal, or the local communication terminal performs verification or supervision. The data communication unit 16 can be a communication interface such as an integrated circuit bus inside the electric energy meter, or can be a wireless communication interface such as a Bluetooth communication interface or an infrared communication interface, and can be used for data interaction.

The management control module 20 is configured to implement rate control and calculate charging data according to the rate and the received power data.

Optionally, the management control module 20 is configured to further transmit the charging data to the primary station or the remote terminal. The management control module 20 may employ a central processing unit such as a STM32L151 series single chip microcomputer or a processor or processing circuit such as a digital signal processor or a programmable array. For example, the management control module 20 is configured to include:

The management MCU 25 is configured to control other functional units in the management control module and perform data interaction with the communication unit.

The rate calculation unit 21 is configured to control the rate and calculate the billing data based on the received power data. When the rate calculation unit 21 receives the update operation request sent from the remote communication unit 22, the data update is performed, and after the current data update operation is completed, the charge data is checked using the power data. The rate calculation unit 21 may correspond to a hardware structure such as a calculator. The update operation request here may be: when the power data in the meter control module 10 is updated, the power data in the management control module 20 also needs to be updated, or when the metering control module 10 is based on a remote communication terminal or a local communication terminal. The energy data acquired by the current rate calculation unit 21 also needs to be updated synchronously. Therefore, after receiving the data update request, the rate calculation unit 21 performs data update and restarts after the data is updated. Based on updated energy data New billing.

Certainly, in some embodiments, the charging data may be abnormal and needs to be recalculated or corrected. At this time, a data update request of the charging data may also be received, and the charging data needs to be updated at this time. After the update operation is completed, the recalculated billing data is also verified based on the current power data.

The remote communication unit 22 is configured to implement the information exchange between the management control module 20 and the uplink and downlink communication terminal and the measurement control module 10, and when the power meter function requirement is changed, receive the power meter data update operation sent by the communication terminal, and send it to the management. The MCU 25 performs a program update operation. The remote communication unit 22 can be a 485 communication or other communication module. This embodiment preferably has 485 communication. Optionally, the remote communication unit 22 can employ infrared communication to facilitate on-site inspection of the energy meter, specifically a communication interface connected to a network or other terminal device.

The uplink and downlink communication terminal herein includes: a remote control terminal connected to the upstream of the electric energy meter (for example, a remote control terminal belonging to the power station through a network), and a downlink communication terminal connected to the downstream of the electric energy meter, such as a mobile phone held by a user. .

In the embodiment of the present invention, the function of the power meter management control module and the metering control module is divided, and the function of the management control module can be remotely upgraded under the condition that the measurement and measurement part of the metering control module is unchanged, which satisfies the user's functional diversity of the energy meter. The requirements also solve the defect of replacing the electric energy meter to meet the customer's demand for changing the function of the electric energy meter, increasing the renewal cost of the electric energy meter and cumbersome upgrading process.

Optionally, the metering control module 10 and the management control module 20 are not only independent of each other in working principle, but also independent of each other in physical structure, and the metering control module 10 and the management control module 20 are independent pluggable modules, and the metering control is performed. The module 10 and the management control module 20 can be connected through the pluggable communication interface 30. Since the metering control module 10 and the management control module 20 are in different control modules, when one of them fails, it does not affect another work. .

Optionally, the metering control module 10 further includes a clock unit 14, the clock unit 14 configured In order to provide a time reference for the time-stamped power storage in the metering control module 10, and when the timing standard of the management control module 20 adopts the segmented timing charging, according to the clock unit 14, it is configured to switch the charging standards of different time periods, and the management control module 20. Configure to process and store rates and power based on the current time of the metering control module 10.

The clock unit 14 can be powered by the replaceable clock battery 17 or the super capacitor 18, which satisfies the timing requirements of the clock unit, and ensures the clock unit 14 timing stability and accuracy.

The clock unit 14 may include various timers for timing, for example, may include: a crystal oscillator capable of timing, and the like.

In some embodiments, the metering control module 10 further includes a metering storage unit 13 configured to store in real time the amount of time-stamped power generated by the energy data generated by the acquisition computing unit 11 and the time provided by the clock unit 14.

The basic frozen power stored by the metering storage unit 13 can check the power fee information of the billing storage unit 23 to ensure the accuracy and traceability of the billing data.

In still other embodiments, the management control module 20 further includes a billing storage unit 23 configured to store rate power, power meter event records, and underlying freeze data.

In some embodiments, the management control module 20 further includes:

The human-machine interaction unit 24 is configured to perform liquid crystal display and/or voice prompting of data or operations, for example, displaying billing data and electric energy data, and when the user recharges the electric energy meter, the voice prompts the operation result and the like.

In other embodiments, the power meter may further include a card insertion area, a module communication interface, an encryption module, and a trip light, wherein: the card insertion area is configured to insert the power purchase card into the card insertion area to provide insertion for purchasing the power card. Location, to achieve user purchases, query power purchase information and other related functions.

The module communication interface is configured to read data such as energy meter energy, real-time parameters, event records, and frozen data, and can also implement functions such as setting energy meter parameters and remotely upgrading.

The encryption/decryption module is configured to encrypt or decrypt the communication information of the electric energy meter to avoid data leakage and ensure the safety of data transmission of the electric energy meter; the trip light is used to indicate the current state of the user, and when the user owes money, the relay trips and then trips The indicator lights up.

The electric energy meter of the embodiment of the invention can be regarded as a smart electric energy meter. By setting the function division of the electric energy meter management control module and the metering control module, the management control module function can be remotely upgraded when the measurement and measurement part of the measurement control module is unchanged. It satisfies the diversified functional requirements of the electric energy meter users, avoids the replacement of the electric energy meter due to the change of the customer's functional requirements, reduces the cost of the electric energy meter charging standard update, simplifies the electric energy meter updating process, and realizes the electric energy meter function. Diversification.

According to another aspect of the embodiments of the present invention, a method for verifying a smart energy meter is further provided. The method is performed by a host computer, and a voltage of 220V is applied to the smart energy meter before execution, and the current line is stabilized for at least a unit time ΔT. Adding positive Imax, the power factor is 1, and the current is stopped by the standard clock tester console body T min, preferably T min is 30 min, and the current is stopped for at least unit time ΔT, the method includes:

Reading the basic frozen electric energy W _i in a unit time of the metering control module of the smart electric energy meter in the above embodiment; the smart electric energy meter read here provides any kind of electric energy meter for the foregoing embodiment, and may also be referred to as being Measuring electric energy meter;

Calculate the power consumption error γ _{i of the} measured electric energy meter,

Where, W _i is the basis of the metering control module of the measured electric energy meter in the T min time unity time ΔT of the frozen energy, i=1, 2, 3...(T-1), ΔW ₀ is the standard in the time of T min The average value of the table energy value in the unit time ΔT, γ ₀ is the system error of the standard table;

Determining, according to γ _{i ,} whether the basic frozen electrical energy of the electric energy meter under test meets the inspection requirement;

When γ _i does not exceed the predetermined error, the basic frozen electric energy of the measured electric energy meter meets the inspection requirement, and the rate electric energy of the management control module of the smart electric energy meter in the above embodiment is read;

Calculate the difference δ between the rate energy and the base frozen energy,

δ=(W _T '-W ₀ ')-(W _T -W ₀ )

Wherein, W _T ', W ₀ ' respectively correspond to the T-time and the start time management control module rate power indication value, and W _T and W ₀ respectively correspond to the T-time and the start time measurement control module basic frozen power indication value;

Determining, according to δ, whether the rate electric energy of the electric energy meter under test meets the inspection requirement;

When δ does not exceed b×10 ^-α , the rate electric energy of the measured electric energy meter meets the inspection requirement, wherein b is the meter magnification and α is the scale number of the meter,

The billing data is calculated according to the current operating rate schedule and the ladder table of the rate electric energy and electric energy meter.

The intelligent electric energy meter inspection method provided by the above embodiment, through the basic frozen electric energy verification, when the basic frozen electric energy verification meets the requirement, the rate electric energy verification is performed, and when the electric energy rate verification meets the requirement, the electric energy meter is charged. The data ensures the accuracy of the energy meter billing data.

The embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used for the verification method of the electric energy meter.

The computer storage medium may be: a computer hard disk such as a mobile hard disk, an optical disk, a flash disk, a USB disk or a magnetic tape, and may be a non-transitory storage medium.

It will be understood by those skilled in the art that the drawings are only schematic of one embodiment, and the module flow in the drawings is not necessarily required to implement the invention.

The various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for a system or system embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.

The above is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and modifications made in accordance with the principles of the present invention should be understood as falling within the scope of the present invention.

Claims (13)

1. An electric energy meter with a metering part and a management part independently, including a metering control module and a management control module;

   The metering control module is configured to collect and calculate power data, and send the collected and calculated power data to the management control module;

   The management control module is configured to implement rate control, and calculate charging data according to the rate and the received power data.
2. The energy meter independently of the metering part and the management part according to claim 1, wherein the power data comprises: positive active energy, reverse active energy, and basic energy freezing time, wherein each freezing point corresponds to a freezing time The storage depth of the electrical energy data is not less than the second preset duration, not greater than the first preset duration.
3. The metering part and the management part independent energy meter according to claim 1, wherein the metering control module comprises:

   The acquisition calculation unit is configured to collect and calculate the electric energy data, directly collect the voltage and current data by using the metering chip, and calculate the electric energy according to the collected voltage and current data;

   a data communication unit configured to send the power data to the management control module or to trace and check the power data;

   The metering micro control unit MCU is configured to control the collection calculation unit and the data communication unit, and perform information interaction with the management control module through the data communication unit.
4. The electric energy meter of the metering portion and the management portion according to claim 3, wherein

   The metering control module further includes:

   a clock unit configured to provide a time reference for the time-stamped power storage in the metering control module, and when the timing standard of the management control module adopts a segmented timing charge, switch the charging standard for different time periods according to the clock unit ;

   The management control module is configured to process according to a current time of the metering control module Storage rates and power.
5. The metering portion and the management portion independent power meter according to claim 4, wherein the clock unit is powered by a replaceable clock battery or a super capacitor.
6. The electric energy meter of the metering portion and the management portion according to claim 4, wherein

   The metering control module further includes:

   And a metering storage unit configured to store the power quantity data generated by the collection calculation unit and the time-scaled power generated by the time provided by the clock unit.
7. The energy meter of the metering part and the management part of claim 1 , wherein the management control module comprises:

   a rate calculation unit configured to control the rate and calculate billing data based on the received power data; and perform data update of the power data and/or the billing data to update the data After the end, the charging data is checked by using the electrical energy data;

   a remote communication unit configured to implement information exchange between the management control module and the communication terminal and the metering control module, and receive an energy meter data update operation sent by the communication terminal when the power meter function requirement is changed, And concurrently sending the management MCU to perform a program update operation;

   The management micro control unit MCU is configured to control the rate calculation unit and the remote communication unit and perform data interaction with the remote communication unit.
8. The metering part and the management part are independent of the electric energy meter according to claim 7, wherein the management control module further comprises:

   A billing storage unit configured to store rate energy, energy meter event records, and underlying freeze data.
9. The energy meter of the metering part and the management part is independent of the power meter according to claim 7, wherein the management control module further comprises:

   A human-computer interaction unit configured to perform liquid crystal display and/or voice prompts for data or operations.
10. The electric energy meter of the metering portion and the management portion according to claim 1, wherein The metering control module and the management control module are independent pluggable modules, and are connected through a pluggable communication interface.
11. The metering portion and the management portion of the electric energy meter according to claim 1, wherein the electric energy meter further comprises one or more of the following components:

    The card area is configured to be inserted into the purchase card;

    The module communication interface is configured to read energy meter energy, real-time parameters, event records, and freeze data to implement setting of energy meter parameters and remote upgrade;

    The encryption/decryption module is configured to encrypt or decrypt the communication information of the electric energy meter;

    The trip light is configured to indicate a current state, and the indicating the current state includes at least: a lighting indication trip when the charge is arrears.
12. A method for inspecting an electric energy meter, the method comprising:

    Reading the basic frozen electric energy W _i of the metering control module in the electric energy meter according to any one of claims 1 to 12, and calculating the electric power consumption error γ _{i of the} electric energy meter;

    

    Wherein, W _i is the basis of the metering control module for freezing the electric energy per unit time ΔT in the Tmin time, i=1, 2, 3...(T-1), and ΔW ₀ is the standard table electric energy value in the Tmin time The average value in unit time ΔT, γ ₀ is the systematic error of the standard table;

    Determining, according to γ _{i ,} whether the basic frozen electric energy of the electric energy meter meets the inspection requirement, and when γ _i does not exceed the predetermined error, the basic frozen electric energy of the electric energy meter meets the inspection requirement, and the rate control electric energy of the management control module of the electric energy meter is read. ;

    Calculate the difference δ between the rate energy and the base frozen energy,

    δ=(W _T '-W ₀ ')-(W _T -W ₀ )

    Wherein, W _T ' is the rate power value of the T-time management control module; W ₀ ' is the rate power value of the management control module at the start time; W _T is the metering control module of the T time The base frozen power indication value; the base frozen power indication value of the metering control module at the start time of W ₀ ;

    Determining, according to δ, whether the rate electric energy of the electric energy meter meets the inspection requirement, and when δ does not exceed b×10 ^-α , the rate electric energy of the electric energy meter meets the inspection requirement, wherein b is the calibrator magnification, α is Decimal scale;

    The billing data is calculated according to the rate electric energy and the current operating rate period table and the ladder table of the electric energy meter.
13. A computer storage medium storing computer executable instructions for performing the verification method of the electric energy meter provided in claim 12.

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