CN106443564B - Digital harmonic standard electric energy meter and electric energy verification system - Google Patents
Digital harmonic standard electric energy meter and electric energy verification system Download PDFInfo
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- G—PHYSICS
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- 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
Abstract
The application provides a digital harmonic standard electric energy meter and an electric energy verification system, and relates to the technical field of electric energy meter verification. The electric energy verification system comprises a digital power source, an industrial optical fiber switch, a verified digital electric energy meter and a digital harmonic standard electric energy meter, wherein the digital power source is used for sending a digital sampling message to the industrial optical fiber switch; the industrial optical fiber switch is used for respectively sending the digital sampling messages to the digital electric energy meter and the digital harmonic standard electric energy meter; the digital electric energy meter is used for receiving the digital sampling message and outputting electric energy pulse to the digital harmonic standard electric energy meter; the digital harmonic standard electric energy meter is used for verifying the electric energy pulse by taking the digital sampling message as a standard. The calculation standard of the harmonic electric energy under various conditions is realized, and the method can be used for testing fundamental wave electric energy errors, harmonic electric energy errors and total electric energy errors of the digital electric energy meter.
Description
Technical Field
The application relates to the technical field of electric energy, in particular to a verification technology of an electric energy meter, and specifically relates to a digital harmonic standard electric energy meter and an electric energy verification system.
Background
This section is intended to provide a background or context to the embodiments of the application that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
At present, the corresponding digital electric energy meter checking system has been developed by the research institutions in China, and the developed checking systems are mainly divided into two types: the first is a digital standard source method, the basic principle is that a standard digital power source generates a data frame which accords with IEC61850-9-1/2 communication protocol, and the data is transmitted to each digital electric energy meter through a switch and a photoelectric converter. The digital electric energy meter calculates electric energy according to the received voltage and current data, and outputs corresponding low-frequency pulses to the error calculator; at the same time, the standard digital power source outputs standard pulses to the error calculator. And finally, the error calculator obtains an error according to the standard pulse and the low-frequency pulse output by the electric energy meter. And secondly, the key part of the calibrating device is a merging unit for receiving analog quantity, the analog signals are collected and then formed into an Ethernet frame according to IEC61850 communication protocol, and the Ethernet frame is transmitted to the digital electric energy meter to be detected through an optical fiber network or a twisted pair network. The whole verification device comprises a standard power source, a standard electric energy meter and a merging unit for receiving analog quantity.
However, the calibration system based on the digital standard source method or the calibration system based on the standard digital electric energy meter method only carries out error calibration on the total electric energy, and cannot carry out independent calibration on fundamental wave electric energy or harmonic wave electric energy. According to the detection rules of JJG 1106-2015 working static harmonic active energy electric energy meter, GB/T14549-1993 electric energy quality public power grid harmonic and other related electric energy meters, the harmonic electric energy of the electric energy meter needs to be detected.
Therefore, how to research and develop a digital harmonic standard electric energy meter according to the harmonic electric energy verification requirement of the digital electric energy meter so as to realize the harmonic electric energy verification of the digital electric energy meter and ensure the accuracy of the digital electric energy meter metering is a technical problem to be solved in the field.
Disclosure of Invention
In view of the above, the application provides a digital harmonic standard electric energy meter and an electric energy verification system, which are used for solving the problem that the digital electric energy meter in the prior art is difficult to verify harmonic electric energy, so that the accuracy of electric energy metering by using the digital electric energy meter is ensured.
In order to achieve the above object, the present application provides a digital harmonic standard electric energy meter, which comprises an embedded control device, an ethernet port and a pulse input port, wherein the ethernet port is respectively connected with the embedded control device, and is used for receiving a digital sampling message and transmitting the digital sampling message to the embedded control device;
the pulse input port is used for sending electric energy pulses to the embedded control device;
the embedded control device includes:
the decoding sampling unit is used for decoding the digital sampling message and sampling the decoded digital sampling message to obtain a standard electric energy sampling value;
the electric energy calculation unit is connected with the decoding sampling unit and is used for carrying out electric energy calculation on the standard electric energy sampling value to obtain standard electric energy;
the pulse processing unit is used for carrying out high-low level processing and burr filtering processing on the electric energy pulse to obtain the processed electric energy pulse;
and the electric energy error determining unit is connected with the pulse processing unit and the electric energy calculating unit and is used for determining electric energy error data according to the standard electric energy and the processed electric energy pulse.
In a preferred embodiment of the present application, the digital harmonic standard electric energy meter further includes a pulse output port connected to the embedded control device, and configured to convert the digital sampling message into a pulse and output the pulse.
In a preferred embodiment of the present application, the digital harmonic standard electric energy meter further comprises:
the man-machine interface is respectively connected with the embedded control device, the Ethernet port, the pulse output port and the pulse input port and is used for acquiring parameter configuration data;
the embedded control device is used for determining the type of standard electric energy obtained by the electric energy calculation unit according to the parameter configuration data;
the Ethernet port is also used for determining a protocol type and a voltage and current sampling proportionality coefficient according to the parameter configuration data;
the pulse input port is further used for determining a pulse input constant according to the parameter configuration data;
the pulse output port is also used for determining a pulse output constant according to the parameter configuration data.
In a preferred embodiment of the application, the type of standard electrical energy comprises standard fundamental electrical energy or standard harmonic electrical energy or standard total electrical energy.
In a preferred embodiment of the present application, the embedded control device further includes: and the calibration unit is respectively connected with the electric energy error determination unit, the electric energy calculation unit, the pulse processing unit and the decoding sampling unit and is used for calibrating the embedded control device.
In a preferred embodiment of the present application, the man-machine interface is further configured to collect control instructions, where the control instructions are configured to control the opening or closing of the ethernet port, the pulse output port, the pulse input port, and the calibration unit.
In a preferred embodiment of the present application, the embedded control device further includes: the communication unit is connected with the electric energy error determining unit, the electric energy calculating unit and the calibration unit and is used for sending the control instruction to the calibration unit, sending the parameter configuration data to the electric energy calculating unit and sending the electric energy error data to the man-machine interface.
In a preferred embodiment of the present application, the embedded control device further includes a storage unit, connected to the decoding and sampling unit and the power error determining unit, for storing the standard power sampling value and the power error data.
In a preferred embodiment of the present application, the digital harmonic standard electric energy meter further comprises a memory and a communication interface respectively connected with the man-machine interface.
It is an object of the present application to provide an electrical energy verification system comprising a digital power source, an industrial fiber optic switch, a digital electrical energy meter to be verified, and a digital harmonic standard electrical energy meter,
the digital power source is connected with the industrial optical fiber switch through optical fibers and is used for sending digital sampling messages to the industrial optical fiber switch;
the industrial optical fiber switch is respectively connected with the digital electric energy meter to be verified and the digital harmonic standard electric energy meter through optical fibers and is used for respectively sending the digital sampling message to the digital electric energy meter and the digital harmonic standard electric energy meter;
the digital electric energy meter is connected with the digital harmonic standard electric energy meter and is used for receiving the digital sampling message and outputting electric energy pulses to the digital harmonic standard electric energy meter;
the digital harmonic standard electric energy meter is used for verifying the electric energy pulse by taking the digital sampling message as a standard.
The application has the beneficial effects that the digital harmonic standard electric energy meter and the electric energy verification system are provided, the calculation standard of harmonic electric energy under various conditions is realized, the digital harmonic standard electric energy meter can be used for testing fundamental wave electric energy errors, harmonic electric energy errors and total electric energy errors of the digital electric energy meter, the problem that the harmonic electric energy of the digital electric energy meter is difficult to verify is solved, and the accuracy of electric energy metering by using the digital electric energy meter is ensured.
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of an electrical energy verification system according to an embodiment of the present application;
fig. 2 is a block diagram of a first implementation of a digital harmonic standard electric energy meter according to an embodiment of the present application;
fig. 3 is a block diagram of a second implementation of a digital harmonic standard electric energy meter according to an embodiment of the present application;
fig. 4 is a block diagram of a third implementation of a digital harmonic standard electric energy meter according to an embodiment of the present application;
fig. 5 is a block diagram of a first embodiment of an embedded control device in a digital harmonic standard electric energy meter according to an embodiment of the present application;
fig. 6 is a block diagram of a second embodiment of an embedded control device in a digital harmonic standard electric energy meter according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Those skilled in the art will appreciate that embodiments of the application may be implemented as a system, apparatus, device, method, or computer program product. Accordingly, the present disclosure may be embodied in the following forms, namely: complete hardware, complete software (including firmware, resident software, micro-code, etc.), or a combination of hardware and software.
The principles and spirit of the present application are explained in detail below with reference to several representative embodiments thereof.
Aiming at the technical problems that in the prior art, a calibration system based on a digital standard source method and a calibration system based on a standard digital electric energy meter method only carry out error calibration on total electric energy and cannot carry out independent calibration on fundamental wave electric energy or harmonic wave electric energy, the application provides a digital harmonic wave standard electric energy meter and an electric energy calibration system, realizes the harmonic wave electric energy calibration of the digital electric energy meter and ensures the metering accuracy of the digital electric energy meter.
Next, a power verification system according to an exemplary embodiment of the present application will be described with reference to the accompanying drawings. The terms "module" and "unit" as used below may be software and/or hardware that implements the intended function. While the modules described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
Fig. 1 is a block diagram of an electrical energy verification system according to an embodiment of the present application, referring to fig. 1, the system includes a digital power source 100, an industrial optical fiber switch 200, a digital electrical energy meter 300 to be verified, and a digital harmonic standard electrical energy meter 400.
The digital power source 100 is connected to the industrial optical fiber switch 200 through an optical fiber, and is configured to send a digital sampling packet to the industrial optical fiber switch 200. In a particular embodiment, the digital power source 100 generates digital sampled messages that meet IEC61850-9-1 or IEC61850-9-2 requirements via a digital fitting algorithm and connects to an industrial fiber switch via optical fibers.
The industrial optical fiber switch 200 is connected with the digital electric energy meter 300 and the digital harmonic standard electric energy meter 400 to be inspected through optical fibers respectively, and is used for sending the digital sampling message to the digital electric energy meter 300 and the digital harmonic standard electric energy meter 400 respectively, that is, the industrial optical fiber switch 200 forwards the input digital sampling message into two paths for output, and the digital sampling message is respectively connected to the digital harmonic standard electric energy meter and the digital electric energy meter to be inspected.
The digital electric energy meter 300 is connected with the digital harmonic standard electric energy meter 400, and is used for receiving the digital sampling message and outputting electric energy pulse to the digital harmonic standard electric energy meter 400;
the digital harmonic standard electric energy meter 400 is used for verifying the electric energy pulse by taking the digital sampling message as a standard.
In a specific embodiment, after pulse constants and corresponding verified electric energy type parameters of the digital electric energy meter are set, the digital harmonic standard electric energy meter takes a received IEC61850-9-2 sampling message as a standard, and the received electric energy pulse input is taken as a detected, so that verification of fundamental wave electric energy, harmonic electric energy and total electric energy errors of the digital electric energy meter is realized.
Fig. 2 is a block diagram of a first embodiment of a digital harmonic standard electric energy meter according to an embodiment of the present application, referring to fig. 2, in the first embodiment, the digital harmonic standard electric energy meter includes an embedded control device 401, an ethernet port 402 and a pulse input port 403, which are respectively connected to the embedded control device 401.
The ethernet port 402 is configured to receive a digital sampling packet and send the digital sampling packet to the embedded control device. The industrial fiber switch 200 inputs the digital sampling message into the digital harmonic standard electric energy meter through the ethernet port 402.
The pulse input 403 is configured to send a pulse of electric energy to the embedded control device 401. The digital electric energy meter 300 outputs electric energy pulses to the pulse input port of the digital harmonic standard electric energy meter 400.
Fig. 5 is a block diagram of a first embodiment of an embedded control device in a digital harmonic standard electric energy meter according to an embodiment of the present application, referring to fig. 5, in the first embodiment, the embedded control device includes:
the decoding and sampling unit 41 is configured to decode the digital sampling packet, and sample the decoded digital sampling packet to obtain a standard electric energy sampling value. And the decoding sampling unit decodes the digital sampling message according to the received digital sampling message and converts the digital sampling message into a corresponding standard electric energy sampling value according to an IEC61850-9-1 or IEC61850-9-2 message format. In other embodiments of the application, the decoding sampling unit can also realize frame loss detection according to the frame sequence number, and when frame loss occurs, the lost sampling point value is re-fitted by using a second-order Lagrange interpolation algorithm, so that the continuity of post-processing signals is ensured, and the sampling value is transmitted to the internal storage unit for storage through DMA control.
And the electric energy calculation unit 42 is connected with the decoding sampling unit and is used for carrying out electric energy calculation on the standard electric energy sampling value to obtain standard electric energy. In the application, the standard electric energy comprises a plurality of types and can be set according to the verification format of the digital electric energy meter to be verified, and optionally, the standard electric energy comprises standard fundamental wave electric energy or standard harmonic wave electric energy or standard total electric energy, wherein the standard total electric energy is the sum of the fundamental wave electric energy and the standard harmonic wave electric energy.
In a specific embodiment, the electric energy calculation unit performs electric energy calculation on the standard electric energy sampling value, and a fundamental wave electric energy and harmonic wave electric energy calculation algorithm is realized. The electric energy calculation algorithm comprises an FFT algorithm, a dot product sum algorithm, a multiplexing Simpson algorithm and a multiplexing Cotes algorithm. Aiming at the metering characteristics of the digital electric energy meter, the input of the digital electric energy meter is a data packet of digital quantity, which is a discrete voltage and current value, and the voltage and current, power effective value and phase value calculation model, error factors and influence quantity are analyzed when the digital electric energy meter is metered. Meanwhile, the influence of the problems in the digital systems such as packet loss, jitter, network storm and the like on the measured value is researched, and the difference between the digital electric energy and the algorithm of the traditional analog electric energy meter is analyzed. When in use, the algorithm characteristic research result can be referred to, and one of the four algorithms is selected for verification during detection.
And a pulse processing unit 43, configured to perform high-low level processing and burr filtering processing on the electric energy pulse, so as to obtain a processed electric energy pulse. The pulse processing unit adopts active and passive self-adaptive processing, can support active or passive pulse input, and realizes that standard electric energy pulse is output for tracing.
And a power error determining unit 44, connected to the pulse processing unit and the power calculating unit, for determining power error data according to the standard power and the processed power pulse. Namely, the electric energy error determining unit compares the standard electric energy with the detected electric energy pulse to obtain detected electric energy error data.
Fig. 3 is a block diagram of a second embodiment of a digital harmonic standard electric energy meter according to an embodiment of the present application, referring to fig. 3, where the digital harmonic standard electric energy meter further includes:
and the pulse output port 404 is connected with the embedded control device and is used for converting the digital sampling message into pulses and outputting the pulses. The pulse output port is arranged in the application to enable other devices to verify the digital harmonic standard electric energy meter later.
The man-machine interface 405 is respectively connected with the embedded control device 401, the ethernet port 402, the pulse output port 404 and the pulse input port 403, and is used for collecting parameter configuration data;
the embedded control device is used for determining the type of the standard electric energy obtained by the electric energy calculation unit according to the parameter configuration data. The type of standard electrical energy includes standard fundamental electrical energy or standard harmonic electrical energy or standard total electrical energy.
The Ethernet port is also used for determining a protocol type and a voltage and current sampling proportionality coefficient according to the parameter configuration data.
The pulse input port is further used for determining a pulse input constant according to the parameter configuration data.
The pulse output port is also used for determining a pulse output constant according to the parameter configuration data.
Fig. 6 is a block diagram of a second embodiment of an embedded control device in a digital harmonic standard electric energy meter according to an embodiment of the present application, referring to fig. 6, in which the embedded control device further includes:
and the calibration unit 45 is respectively connected with the electric energy error determination unit, the electric energy calculation unit, the pulse processing unit and the decoding sampling unit and is used for calibrating the embedded control device.
The communication unit 46 is connected to the power error determining unit, the power calculating unit and the calibration unit, and is configured to send the control command to the calibration unit, send the parameter configuration data to the power calculating unit, and send the power error data to the man-machine interface. The communication unit completes communication with the man-machine interface, receives the control instruction and the parameter configuration information and returns response information, and the connection interface adopts an RS232 serial port design and is realized based on a self-defined serial port communication protocol.
And a storage unit 47, connected to the decoding and sampling unit and the power error determining unit, for storing the standard power sampling value and the power error data.
In other embodiments of the present application, the man-machine interface is further configured to collect a control instruction, where the control instruction is configured to control opening or closing of the ethernet port, the pulse output port, the pulse input port, and the calibration unit. The man-machine interface completes interaction control with a user, in a specific embodiment, the man-machine interface is composed of a common input device such as a TFT liquid crystal screen, a mouse and a keyboard, a display device and an industrial personal computer, the industrial personal computer adopts a Sitey LX-801A industrial personal computer, a windows operating system is operated by the industrial personal computer, and system control software of the testing device is operated on the industrial personal computer, and interaction control with the user is completed by the man-machine interface.
Fig. 4 is a block diagram of a third embodiment of a digital harmonic standard electric energy meter according to an embodiment of the present application, referring to fig. 4, in the third embodiment, the digital harmonic standard electric energy meter further includes a memory 406 and a communication interface 407 connected to the man-machine interface, respectively.
As described above, the digital harmonic standard electric energy meter provided by the application comprises an embedded control device, an optical Ethernet interface, a standard pulse output interface, a pulse input interface, a man-machine interaction interface, a memory and a communication interface. The embedded control device is respectively connected with the man-machine interface, the optical Ethernet interface, the standard pulse output interface and the pulse input interface, and the man-machine interface is respectively connected with the memory and the communication interface.
The man-machine interface is used for sending control instructions and parameter configuration data to the embedded control device and receiving and displaying return information of the embedded control device; the embedded control device is used for decoding the protocol, receiving an Ethernet sampling message input by the optical Ethernet, decoding the sampling message input by the Ethernet interface through the analysis sampling unit, calculating fundamental wave and harmonic standard electric energy by the electric energy calculation unit, processing detected electric energy pulses input by the pulse input port, completing pulse processing by the pulse processing unit, realizing electric energy error calculation processing by the electric energy error processing unit according to the standard electric energy and the detected electric energy, connecting with the pulse output port, and converting the standard electric energy by the pulse processing unit and outputting; the storage unit stores the standard sampling waveform and the electric energy error calculation result; the communication interface is used for being connected with external equipment, and can be used for being connected with a PC through a USB interface and uploading electric energy error data.
In summary, the application provides a digital harmonic standard electric energy meter and an electric energy verification system, which aim at the technical problems that in the prior art, a verification system based on a digital standard source method and a verification system based on a standard digital electric energy meter method only carry out error verification on total electric energy and cannot carry out independent verification on fundamental electric energy or harmonic electric energy, so that the harmonic electric energy verification of the digital electric energy meter is realized, and the metering accuracy of the digital electric energy meter is ensured.
Improvements to one technology can clearly distinguish between improvements in hardware (e.g., improvements to circuit structures such as diodes, transistors, switches, etc.) and software (improvements to the process flow). However, with the development of technology, many improvements of the current method flows can be regarded as direct improvements of hardware circuit structures. Designers almost always obtain corresponding hardware circuit structures by programming improved method flows into hardware circuits. Therefore, an improvement of a method flow cannot be said to be realized by a hardware entity module. For example, a programmable logic device (Programmable Logic Device, PLD) (e.g., field programmable gate array (Field Programmable Gate Array, FPGA)) is an integrated circuit whose logic function is determined by the programming of the device by a user. A digital system is "integrated" on a PLD by the designer's own programming without requiring the chip manufacturer to design and fabricate application-specific integrated circuit chips 2. Moreover, nowadays, instead of manually manufacturing integrated circuit chips, such programming is mostly implemented with "logic compiler" software, which is similar to the software compiler used in program development and writing, and the original code before the compiling is also written in a specific programming language, which is called hardware description language (Hardware Description Language, HDL), but HDL is not only one, but a plurality of kinds, such as ABEL (Advanced Boolean Expression Language), AHDL (Altera Hardware Description Language), confluence, CUPL (Cornell University Programming Language), HDCal, JHDL (Java Hardware Description Language), lava, lola, myHDL, PALASM, RHDL (Ruby Hardware Description Language), etc., VHDL (Very-High-Speed Integrated Circuit Hardware Description Language) and Verilog2 are most commonly used at present. It will also be apparent to those skilled in the art that a hardware circuit implementing the logic method flow can be readily obtained by merely slightly programming the method flow into an integrated circuit using several of the hardware description languages described above.
The controller may be implemented in any suitable manner, for example, the controller may take the form of, for example, a microprocessor or processor and a computer readable medium storing computer readable program code (e.g., software or firmware) executable by the (micro) processor, logic gates, switches, application specific integrated circuits (Application Specific Integrated Circuit, ASIC), programmable logic controllers, and embedded microcontrollers, examples of which include, but are not limited to, the following microcontrollers: ARC 625D, atmel AT91SAM, microchip PIC18F26K20, and Silicone Labs C8051F320, the memory controller may also be implemented as part of the control logic of the memory.
Those skilled in the art will also appreciate that, in addition to implementing the controller in a pure computer readable program code, it is well possible to implement the same functionality by logically programming the method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers, etc. Such a controller may thus be regarded as a kind of hardware component, and means for performing various functions included therein may also be regarded as structures within the hardware component. Or even means for achieving the various functions may be regarded as either software modules implementing the methods or structures within hardware components.
The system, apparatus, module or unit set forth in the above embodiments may be implemented in particular by a computer chip or entity, or by a product having a certain function.
For convenience of description, the above devices are described as being functionally divided into various units, respectively. Of course, the functions of each element may be implemented in the same piece or pieces of software and/or hardware when implementing the present application.
From the above description of embodiments, it will be apparent to those skilled in the art that the present application may be implemented in software plus a necessary general hardware platform. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the embodiments or some parts of the embodiments of the present application.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
The application is operational with numerous general purpose or special purpose computer system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
Although the present application has been described by way of examples, one of ordinary skill in the art appreciates that there are many variations and modifications that do not depart from the spirit of the application, and it is intended that the appended claims encompass such variations and modifications as fall within the spirit of the application.
Claims (6)
1. A digital harmonic standard electric energy meter is characterized in that the digital harmonic standard electric energy meter comprises an embedded control device, an Ethernet port and a pulse input port which are respectively connected with the embedded control device,
the Ethernet port is used for receiving a digital sampling message and sending the digital sampling message to the embedded control device;
the pulse input port is used for sending electric energy pulses to the embedded control device;
the embedded control device includes:
the decoding sampling unit is used for decoding the digital sampling message and sampling the decoded digital sampling message to obtain a standard electric energy sampling value;
the electric energy calculation unit is connected with the decoding sampling unit and is used for carrying out electric energy calculation on the standard electric energy sampling value to obtain standard electric energy;
the pulse processing unit is used for carrying out high-low level processing and burr filtering processing on the electric energy pulse to obtain the processed electric energy pulse;
the electric energy error determining unit is connected with the pulse processing unit and the electric energy calculating unit and is used for determining electric energy error data according to the standard electric energy and the processed electric energy pulse;
the digital harmonic standard electric energy meter further comprises:
the pulse output port is connected with the embedded control device and is used for converting the digital sampling message into a pulse and outputting the pulse;
the digital harmonic standard electric energy meter further comprises:
the man-machine interface is respectively connected with the embedded control device, the Ethernet port, the pulse output port and the pulse input port and is used for acquiring parameter configuration data;
the embedded control device is used for determining the type of standard electric energy obtained by the electric energy calculation unit according to the parameter configuration data;
the Ethernet port is also used for determining a protocol type and a voltage and current sampling proportionality coefficient according to the parameter configuration data;
the pulse input port is further used for determining a pulse input constant according to the parameter configuration data;
the pulse output port is also used for determining a pulse output constant according to the parameter configuration data;
the standard electric energy type comprises standard fundamental wave electric energy or standard harmonic wave electric energy or standard total electric energy
The embedded control device further includes:
and the calibration unit is respectively connected with the electric energy error determination unit, the electric energy calculation unit, the pulse processing unit and the decoding sampling unit and is used for calibrating the embedded control device.
2. The digital harmonic standard electric energy meter of claim 1, wherein the man-machine interface is further configured to collect control instructions for controlling the opening or closing of the ethernet port, the pulse output port, the pulse input port, and the calibration unit.
3. The digital harmonic standard electric energy meter of claim 2, wherein the embedded control device further comprises:
the communication unit is connected with the electric energy error determining unit, the electric energy calculating unit and the calibration unit and is used for sending the control instruction to the calibration unit, sending the parameter configuration data to the electric energy calculating unit and sending the electric energy error data to the man-machine interface.
4. The digital harmonic standard electric energy meter of claim 2, wherein the embedded control device further comprises:
and the storage unit is connected with the decoding sampling unit and the electric energy error determining unit and is used for storing the standard electric energy sampling value and the electric energy error data.
5. The digital harmonic standard electric energy meter of claim 2, further comprising a memory and a communication interface respectively connected with the man-machine interface.
6. An electrical energy verification system comprising a digital power source, an industrial fiber optic switch, a digital electrical energy meter to be verified, and a digital harmonic standard electrical energy meter as set forth in any one of claims 1-5,
the digital power source is connected with the industrial optical fiber switch through optical fibers and is used for sending digital sampling messages to the industrial optical fiber switch;
the industrial optical fiber switch is respectively connected with the digital electric energy meter to be verified and the digital harmonic standard electric energy meter through optical fibers and is used for respectively sending the digital sampling message to the digital electric energy meter and the digital harmonic standard electric energy meter;
the digital electric energy meter is connected with the digital harmonic standard electric energy meter and is used for receiving the digital sampling message and outputting electric energy pulses to the digital harmonic standard electric energy meter;
the digital harmonic standard electric energy meter is used for verifying the electric energy pulse by taking the digital sampling message as a standard.
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| CN107677982A (en) * | 2017-09-26 | 2018-02-09 | 国家电网公司 | A kind of digitalized electrical energy meter on-site calibrating method and device |
| CN107561473A (en) * | 2017-10-13 | 2018-01-09 | 广东电网有限责任公司电力科学研究院 | A kind of standard digital electric energy meter |
| CN109100678A (en) * | 2018-09-27 | 2018-12-28 | 深圳深宝电器仪表有限公司 | A kind of detection device and detection method for digitalized electrical energy meter |
| CN110967663A (en) * | 2018-09-29 | 2020-04-07 | 武汉格蓝若智能技术有限公司 | Digital electric energy meter rapid calibration method suitable for field working conditions |
| US10830859B2 (en) * | 2019-03-22 | 2020-11-10 | Landis+Gyr Innovations, Inc. | Validating fundamental-only energy measurement |
| CN111122966B (en) * | 2019-12-27 | 2022-05-17 | 宁波三星医疗电气股份有限公司 | Load identification module data transmission method, device and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135608A (en) * | 2011-01-29 | 2011-07-27 | 四川电力科学研究院 | Electric energy metering and monitoring system of intelligent gateway |
| CN103558577A (en) * | 2013-10-29 | 2014-02-05 | 国家电网公司 | Double-input-type digital standard energy meter, detecting system and quantity value source tracing system |
| CN103792508A (en) * | 2014-01-27 | 2014-05-14 | 国家电网公司 | Error test system and method for digitized metering device |
| WO2014071753A1 (en) * | 2012-11-06 | 2014-05-15 | 国家电网公司 | Electronic transformer calibrator calibration device and method based on digital source |
| CN206248819U (en) * | 2016-11-22 | 2017-06-13 | 国网冀北电力有限公司电力科学研究院 | One kind digitlization harmonic standard harmonic electric energy meter and electric energy verification system |
-
2016
- 2016-11-22 CN CN201611044634.2A patent/CN106443564B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135608A (en) * | 2011-01-29 | 2011-07-27 | 四川电力科学研究院 | Electric energy metering and monitoring system of intelligent gateway |
| WO2014071753A1 (en) * | 2012-11-06 | 2014-05-15 | 国家电网公司 | Electronic transformer calibrator calibration device and method based on digital source |
| CN103558577A (en) * | 2013-10-29 | 2014-02-05 | 国家电网公司 | Double-input-type digital standard energy meter, detecting system and quantity value source tracing system |
| CN103792508A (en) * | 2014-01-27 | 2014-05-14 | 国家电网公司 | Error test system and method for digitized metering device |
| CN206248819U (en) * | 2016-11-22 | 2017-06-13 | 国网冀北电力有限公司电力科学研究院 | One kind digitlization harmonic standard harmonic electric energy meter and electric energy verification system |
Non-Patent Citations (2)
| Title |
|---|
| 基于IEC 61850协议的数字电能表校验装置的研发与设计;陆锋杰;申屠洁群;张佳学;张珠峰;徐斌;;电测与仪表(第06期);49-54 * |
| 数字化电能表校准技术研究及应用;申莉;甘依依;孙国学;苏剑烨;易丁;赵言涛;;电测与仪表;第51卷(第24期);85-95 * |
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