CN214895457U - DC digital standard power source device - Google Patents
DC digital standard power source device Download PDFInfo
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- CN214895457U CN214895457U CN202022080579.0U CN202022080579U CN214895457U CN 214895457 U CN214895457 U CN 214895457U CN 202022080579 U CN202022080579 U CN 202022080579U CN 214895457 U CN214895457 U CN 214895457U
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Abstract
The invention discloses a direct current digital standard power source device, and belongs to the technical field of extra-high voltage direct current transmission direct current electric energy metering. The utility model discloses a: the device comprises a signal generation module, a synchronous sampling module, a data truncation module, a digital constant module, an adder module, a protocol conversion module, a D/A conversion module, an amplifier module, an electric energy calculation module and an electric energy comparison module. The utility model discloses, the simulation of the measurement situation under the existence of direct current ripple wave of realization can produce direct current digital signal and the analog signal who takes the ripple simultaneously, is lacking under the current situation of the digital standard power source design standard of direct current, can provide the reference for the design of the digital standard power source of direct current.
Description
Technical Field
The invention relates to the technical field of extra-high voltage direct current transmission direct current electric energy metering, in particular to a direct current digital standard power source device.
Background
With the development of extra-high voltage direct current transmission, the application of the digital direct current electric energy meter in the intelligent converter station is more and more common. The digital direct current electric energy meter is used as an electric energy metering appliance, and relevant regulations require that the digital direct current electric energy meter is verified and traced. In the digital electric energy meter verification and tracing scheme based on the digital standard power source, the structural design of the standard power source is the key. However, relevant regulation specifications are not established for the design of the direct current digital standard power source in China. In addition, at present, no direct current digital standard power source specially designed for verification and tracing of the direct current digital electric energy meter exists.
Disclosure of Invention
In view of the above problem, the present invention provides a dc digital standard power source device, including:
a signal generation module, said signal generator outputting a voltage/current sine quantity;
the synchronous sampling module is used for sampling the voltage/current sine quantity according to the preset protocol specification and outputting a sampling result;
the data truncation module is used for receiving the sampling result, quantizing the sampling result according to the preset protocol requirement and outputting a quantized value;
a digital constant module that outputs a constant component of the analog direct current signal;
the adder module receives the quantized value and the constant component, superposes the quantized value and the constant component and outputs a superposed value;
the protocol conversion module is used for carrying out protocol conversion on the superposition value according to a preset protocol standard and outputting a data signal;
the D/A conversion module receives the digital signal, performs signal reconstruction on the digital signal and outputs an analog signal;
an amplifier module that amplifies an analog signal;
the electric energy calculating module receives the analog signal, performs electric energy calculation on the analog signal to obtain an electric energy value, and outputs an electric energy pulse according to the electric energy value;
and the electric energy comparison module receives the electric energy pulse, performs error calculation on the electric energy pulse and obtains an electric energy error value.
Optionally, the apparatus further comprises:
and the Ethernet interface is used for transmitting the data signal output by the protocol conversion module to the D/A conversion module.
Optionally, the apparatus further comprises:
and the pulse transceiving module is used for receiving the electric energy pulse output by the electric energy calculating module and forwarding the electric energy pulse to the electric energy comparing module, or receiving an external electric energy pulse and forwarding the external electric energy pulse to the electric energy comparing module.
Optionally, the signal generation module, the synchronous sampling module, the digital truncation module, the digital constant module, the adder module, the electric energy calculation module, and the electric energy comparison module are integrated on an FPGA development board, and the FPGA dominant frequency selects 166 Mhz.
Optionally, the signal generating module outputs a sine function, 6000 data points are generated per cycle, and the frequency of the output sine function is selected to be an integral multiple of 600 Hz.
Optionally, the sampling step size of the synchronous sampling module selects 1/80 of the highest harmonic frequency period.
Optionally, the number of truncation bits of the digital truncation module is 16 bits.
Optionally, the protocol conversion module selects an IEC61850-9-1 communication protocol standard.
Optionally, the electric energy metering module adopts a complex Simpson integral algorithm.
Alternatively, the D/a converter is of a 16-bit voltage output type.
The utility model discloses, the simulation of the measurement situation under the existence of direct current ripple wave of realization can produce direct current digital signal and the analog signal who takes the ripple simultaneously, is lacking under the current situation of the digital standard power source design standard of direct current, can provide the reference for the design of the digital standard power source of direct current.
Drawings
FIG. 1 is a diagram of a DC digital standard power source device according to the present invention;
fig. 2 is a connection diagram of the dc digital standard power source device to the dc digital electric energy meter according to the present invention;
fig. 3 is a connection diagram of the dc digitized standard power source device to the dc digitized power source tracing according to the present invention.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
The invention provides a direct current digital standard power source device, as shown in fig. 1, comprising:
a signal generation module, said signal generator outputting a voltage/current sine quantity;
the synchronous sampling module is used for sampling the voltage/current sine quantity according to the preset protocol specification and outputting a sampling result;
the data truncation module is used for receiving the sampling result, quantizing the sampling result according to the preset protocol requirement and outputting a quantized value;
a digital constant module that outputs a constant component of the analog direct current signal;
the adder module receives the quantized value and the constant component, superposes the quantized value and the constant component and outputs a superposed value;
the protocol conversion module is used for carrying out protocol conversion on the superposition value according to a preset protocol standard and outputting a data signal;
the D/A conversion module receives the digital signal, performs signal reconstruction on the digital signal and outputs an analog signal;
an amplifier module that amplifies an analog signal;
the electric energy calculating module receives the analog signal, performs electric energy calculation on the analog signal to obtain an electric energy value, and outputs an electric energy pulse according to the electric energy value;
and the electric energy comparison module receives the electric energy pulse, performs error calculation on the electric energy pulse and obtains an electric energy error value.
And the Ethernet interface is used for transmitting the data signal output by the protocol conversion module to the D/A conversion module.
And the pulse transceiving module is used for receiving the electric energy pulse output by the electric energy calculating module and forwarding the electric energy pulse to the electric energy comparing module, or receiving an external electric energy pulse and forwarding the external electric energy pulse to the electric energy comparing module.
The system comprises a signal generation module, a synchronous sampling module, a digital truncation module, a digital constant module, an adder module, an electric energy calculation module and an electric energy comparison module, wherein the signal generation module, the synchronous sampling module, the digital truncation module, the digital constant module, the adder module, the electric energy calculation module and the electric energy comparison module are integrated on an FPGA development board, and 166Mhz is selected as an FPGA main frequency.
The signal generation module adopts sine function output, 6000 data points are generated by each cycle of wave, and the frequency of the output sine function is selected to be integral multiple of 600 Hz.
The sampling step size of the synchronous sampling module selects 1/80 of the highest harmonic frequency period.
The number of the truncation bits of the digital truncation module is 16 bits.
And the protocol conversion module selects an IEC61850-9-1 communication protocol standard.
The electric energy metering module adopts a complex Simpson integral algorithm.
The D/a converter is of a 16-bit voltage output type.
As shown in fig. 2, when the dc digital electric energy meter of the commutation station is checked, the ethernet interface of the dc digital standard power source outputs a protocol message conforming to the IEC61850-9-1 standard to the dc digital electric energy meter, and the electric energy pulse output interface of the dc digital electric energy meter is connected to the pulse transceiver module of the dc digital standard power source; the pulse transceiving module outputs the received electric energy pulse to the electric energy comparison module, and the electric energy comparison module calculates the electric energy metering error of the digital electric energy meter relative to the direct current digital standard power source, so that the aim of verifying the direct current digital electric energy meter of the current conversion station is fulfilled.
As shown in fig. 3, when tracing the dc digitized standard power source, on one hand, the amplifier unit of the dc digitized standard power source outputs analog voltage and current signals to the analog standard meter of the laboratory standard device to perform standard electric energy calculation, and sends the calculation result to the error calculator of the laboratory standard device; on the other hand, the pulse transceiving module of the direct current digital standard power source outputs the electric energy pulse of the direct current digital standard power source to an error calculator of the laboratory standard device; the electric energy output error of the direct current digital standard power source relative to the laboratory simulation standard meter is calculated by an error calculator of the laboratory standard device, so that the aim of tracing the direct current digital standard power source is fulfilled.
The utility model discloses, the simulation of the measurement situation under the existence of direct current ripple wave of realization can produce direct current digital signal and the analog signal who takes the ripple simultaneously, is lacking under the current situation of the digital standard power source design standard of direct current, can provide the reference for the design of the digital standard power source of direct current.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. The scheme in the embodiment of the application can be implemented by adopting various computer languages, such as object-oriented programming language Java and transliterated scripting language JavaScript.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A dc digitized standard power source apparatus, the apparatus comprising:
a signal generation module that outputs a voltage/current sine quantity;
the synchronous sampling module samples the voltage/current sine quantity according to a preset protocol specification and outputs a sampling result;
the data truncation module is used for receiving the sampling result, quantizing the sampling result according to the preset protocol requirement and outputting a quantized value;
a digital constant module that outputs a constant component of the analog direct current signal;
the adder module receives the quantized value and the constant component, superposes the quantized value and the constant component and outputs a superposed value;
the protocol conversion module is used for carrying out protocol conversion on the superposition value according to a preset protocol standard and outputting a data signal;
the D/A conversion module receives the digital signal, performs signal reconstruction on the digital signal and outputs an analog signal;
an amplifier module that amplifies an analog signal;
the electric energy calculation module receives the analog signal, performs electric energy calculation on the analog signal to obtain an electric energy value, and outputs an electric energy pulse according to the electric energy value;
and the electric energy comparison module receives the electric energy pulse, performs error calculation on the electric energy pulse and obtains an electric energy error value.
2. The apparatus of claim 1, further comprising:
and the Ethernet interface is used for transmitting the data signal output by the protocol conversion module to the D/A conversion module.
3. The apparatus of claim 1, further comprising:
and the pulse transceiving module is used for receiving the electric energy pulse output by the electric energy calculating module and forwarding the electric energy pulse to the electric energy comparing module, or receiving an external electric energy pulse and forwarding the external electric energy pulse to the electric energy comparing module.
4. The device of claim 1, wherein the signal generation module, the synchronous sampling module, the data truncation module, the digital constant module, the adder module, the power calculation module and the power comparison module are integrated on an FPGA development board, and 166Mhz is selected as the main frequency of the FPGA.
5. The apparatus of claim 1, wherein the signal generation module employs a sine function output, wherein 6000 data points are generated per cycle, and wherein the output sine function frequency is selected to be an integer multiple of 600 Hz.
6. The apparatus of claim 1, wherein the sampling steps of the synchronous sampling module select 1/80 of a highest harmonic frequency period.
7. The apparatus of claim 1, wherein the number of truncation bits of the data truncation module is 16 bits.
8. The apparatus of claim 1, wherein the protocol conversion module selects an IEC61850-9-1 communication protocol standard.
9. The apparatus of claim 4, wherein the power calculation module employs a complex Simpson integration algorithm.
10. The apparatus of claim 1, wherein the D/a converter is of a 16-bit voltage output type.
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| CN202022080579.0U CN214895457U (en) | 2020-09-21 | 2020-09-21 | DC digital standard power source device |
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| CN202022080579.0U CN214895457U (en) | 2020-09-21 | 2020-09-21 | DC digital standard power source device |
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