CN110703180A - Multi-mode intelligent substation simulation system and method - Google Patents
Multi-mode intelligent substation simulation system and method Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
Abstract
The invention discloses a multi-mode intelligent substation simulation system and a method, which comprises the following steps: the traditional electric energy metering module is used for metering electric energy by utilizing a standard electronic electric energy meter on current values and voltage values output by a traditional current transformer and a traditional voltage transformer to obtain an electric energy metering standard value; the semi-digital electric energy metering module acquires a first electric energy metering value by utilizing current values and voltage values output by a traditional current transformer and a traditional voltage transformer; the full-digital electric energy metering module acquires a second electric energy metering value by using the current value and the voltage value output by the electronic current transformer and the electronic voltage transformer; the electric energy meter information aggregation processing module calculates the metering errors of the semi-digital electric energy metering module and the full-digital electric energy metering module by using the electric energy metering standard value, the first electric energy metering value and the second electric energy metering value; and the monitoring module is used for monitoring the process of determining the metering error.
Description
Technical Field
The present invention relates to the field of metering calibration, and more particularly, to a multi-mode intelligent substation simulation system and method.
Background
At present, the national power grid limited company and the southern power grid limited company share 7000 seats of intelligent stations, and the large-scale construction and operation of the intelligent transformer substation greatly promote the large-scale application of digital related equipment. Compared with the traditional electromagnetic quantity equipment, the digital metering equipment has the advantages that the adopted testing equipment, the testing principle and the testing technology are basically new, although the digital metering is proposed for a while, the technology accumulation and the personnel accumulation of the digital metering professionals of different network provinces and companies are seriously differentiated. The installation, debugging, operation and maintenance of the digital metering equipment provide new requirements for related technical personnel, and especially for new power grid people who primarily contact the digital metering major of the intelligent substation, the knowledge cognition of the digital metering equipment including a protection device, a metering device, a measurement and control device and a merging unit device is also basically blank.
Compared with the traditional transformer substation, the intelligent transformer substation is mainly characterized by the adopted electronic transformer and the secondary circuit part matched with the electronic transformer. Therefore, a multi-modal intelligent substation simulation system needs to be determined to perform multi-modal electric energy metering research.
Disclosure of Invention
The invention provides a multi-mode intelligent substation simulation system and method, which aim to solve the problem of how to analyze multi-mode electric energy metering.
In order to solve the above problems, according to an aspect of the present invention, there is provided a multi-mode intelligent substation simulation system, the system including:
the traditional electric energy metering module is connected with the electric energy meter information aggregation processing module and used for metering electric energy by utilizing a standard electronic electric energy meter on current values and voltage values output by a traditional current transformer and a traditional voltage transformer so as to obtain an electric energy metering standard value;
the semi-digital electric energy metering module is connected with the electric energy meter information aggregation processing module and used for merging and synchronously processing the current value and the voltage value output by the traditional current transformer and the traditional voltage transformer by using the analog quantity merging unit so as to obtain first intermediate data and metering the electric energy of the first intermediate data by using the digital electric energy meter so as to obtain a first electric energy metering value;
the digital electric energy metering module is connected with the electric energy meter information aggregation processing module and is used for merging and synchronously processing the current value and the voltage value output by the electronic current transformer and the electronic voltage transformer by using the digital quantity merging unit so as to obtain second intermediate data and metering the electric energy of the second intermediate data by using the digital electric energy meter so as to obtain a second electric energy metering value;
the electric energy meter information aggregation processing module is respectively connected with the traditional electric energy metering module, the semi-digital electric energy metering module and the all-digital electric energy metering module and is used for calculating the metering errors of the semi-digital electric energy metering module and the all-digital electric energy metering module by utilizing the electric energy metering standard value, the first electric energy metering value and the second electric energy metering value;
and the monitoring module is connected with the electric energy meter information aggregation processing module and the merging unit information aggregation processing module and is used for monitoring the process of determining the metering error.
Preferably, wherein the system further comprises:
the standard current booster is respectively connected with the traditional current transformer and the electronic current transformer, is used for outputting a standard current value and respectively transmits the standard current value to the traditional current transformer and the electronic current transformer;
and the standard voltage booster is respectively connected with the traditional voltage transformer and the electronic voltage transformer, is used for outputting a standard voltage value, and is respectively transmitted to the traditional voltage transformer and the electronic voltage transformer.
Preferably, wherein the system further comprises:
and the merging unit information aggregation processing module is respectively connected with the analog quantity merging unit and the digital quantity merging unit and is used for carrying out electric energy metering on the first intermediate data and the second intermediate data so as to obtain a first electric energy metering check value and a second electric energy check value.
Preferably, wherein the system further comprises:
the electronic transformer calibrator is connected with the electronic voltage transformer and the electronic current transformer and used for calibrating errors of the electronic voltage transformer and the electronic current transformer;
the merging unit tester is connected with the analog quantity merging unit and the digital quantity merging unit and used for verifying the errors of the analog quantity merging unit and the digital quantity merging unit;
the digital electric energy meter calibrator is connected with the digital electric energy meter and used for calibrating errors of the digital electric energy meter.
Preferably, wherein the system further comprises:
the three-phase analog arbitrary wave transmitter is connected with the analog quantity merging unit and is used for simulating the secondary output of the traditional mutual inductor, outputting a preset analog mutual inductor fault waveform and transmitting the preset analog mutual inductor fault waveform to the analog quantity merging unit so as to calculate the electric energy metering error under the fault condition;
and the three-phase digital arbitrary wave transmitter is connected with the digital quantity merging unit and used for simulating the secondary output of the electronic transformer, outputting a preset digital transformer fault waveform and transmitting the preset digital transformer fault waveform to the digital quantity merging unit so as to calculate the electric energy metering error under the fault condition.
According to another aspect of the invention, there is provided a method of simulation using the multimode intelligent substation simulation system as described above, the method comprising:
the method comprises the steps that a traditional electric energy metering module is used for metering electric energy by utilizing a standard electronic electric energy meter for current values and voltage values output by a traditional current transformer and a traditional voltage transformer so as to obtain an electric energy metering standard value;
the method comprises the steps that a semi-digital electric energy metering module is used for utilizing an analog quantity merging unit to merge and synchronously process current values and voltage values output by a traditional current transformer and a traditional voltage transformer so as to obtain first intermediate data, and a digital electric energy meter is used for carrying out electric energy metering on the first intermediate data so as to obtain a first electric energy metering value;
the digital electric energy metering module is used for merging and synchronously processing the current value and the voltage value output by the electronic current transformer and the electronic voltage transformer by using a digital quantity merging unit so as to obtain second intermediate data, and the digital electric energy meter is used for metering the electric energy of the second intermediate data so as to obtain a second electric energy metering value;
calculating the metering errors of the semi-digital electric energy metering module and the full-digital electric energy metering module by using the electric energy meter information aggregation processing module and the electric energy metering standard value, the first electric energy metering value and the second electric energy metering value;
and monitoring the process of determining the metering error by using a monitoring module.
Preferably, wherein the method further comprises:
outputting a standard current value by using a standard current booster, and respectively transmitting the standard current value to a traditional current transformer and an electronic current transformer;
and outputting a standard voltage value by using a standard booster, and respectively transmitting the standard voltage value to the traditional voltage transformer and the electronic voltage transformer.
Preferably, wherein the method further comprises:
and utilizing the merging unit information aggregation processing module to measure the electric energy according to the first intermediate data and the second intermediate data so as to obtain a first electric energy measurement check value and a second electric energy check value.
Preferably, wherein the method further comprises:
the error of the electronic voltage transformer and the error of the electronic current transformer are verified by using an electronic transformer calibrator;
utilizing a merging unit tester to verify the errors of the analog quantity merging unit and the digital quantity merging unit;
and checking the error of the digital electric energy meter by using a digital electric energy meter checker.
Preferably, wherein the method further comprises:
simulating secondary output of a traditional transformer by using a three-phase simulation arbitrary wave transmitter, outputting a preset simulation type transformer fault waveform, and transmitting the preset simulation type transformer fault waveform to an analog quantity merging unit to calculate an electric energy metering error under a fault condition;
and simulating secondary output of the electronic transformer by using the three-phase digital arbitrary wave transmitter, outputting a preset digital transformer fault waveform, and transmitting the preset digital transformer fault waveform to the digital quantity merging unit to calculate the electric energy metering error under the fault condition.
The invention provides a multi-mode intelligent substation simulation system and a method, which comprises the following steps: the traditional electric energy metering module is used for metering electric energy by utilizing a standard electronic electric energy meter on current values and voltage values output by a traditional current transformer and a traditional voltage transformer to obtain an electric energy metering standard value; the semi-digital electric energy metering module acquires a first electric energy metering value by utilizing current values and voltage values output by a traditional current transformer and a traditional voltage transformer; the full-digital electric energy metering module acquires a second electric energy metering value by using the current value and the voltage value output by the electronic current transformer and the electronic voltage transformer; the electric energy meter information aggregation processing module calculates the metering errors of the semi-digital electric energy metering module and the full-digital electric energy metering module by using the electric energy metering standard value, the first electric energy metering value and the second electric energy metering value; and the monitoring module is used for monitoring the process of determining the metering error. The multi-mode intelligent substation simulation system comprises a traditional metering loop, a semi-digital metering loop and a full-digital metering loop, can visually compare common points and difference points of three metering modes of the traditional metering loop, the semi-digital metering loop and the full-digital metering loop, and can check the difference of electric energy metering in three states in real time; the wiring of the three metering modes can be changed, trainees can conveniently simulate the field environment in a laboratory, related traditional mutual inductors, electronic mutual inductors, merging units, electronic electric energy meters and digital electric energy meters can be subjected to line combination detection in a targeted manner, and meanwhile, the existing platform resources can be utilized to perform calibration detection on the equipment under the field real environment of on-line or off-line simulation by combining corresponding calibration instruments and testers in a mode of being connected with a loop in parallel and in series; the practical problems of cognition, installation, debugging, operation and maintenance of the relevant equipment of the intelligent substation by a new person who primarily contacts the intelligent substation can be solved.
Drawings
A more complete understanding of exemplary embodiments of the present invention may be had by reference to the following drawings in which:
fig. 1 is a schematic structural diagram of a multi-mode intelligent substation simulation system 100 according to an embodiment of the present invention;
FIG. 2 is an exemplary diagram of a multi-mode intelligent substation simulation system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a three metrology mode group line according to an embodiment of the present invention; and
fig. 4 is a flowchart of a multi-mode intelligent substation simulation method 400 according to an embodiment of 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.
Fig. 1 is a schematic structural diagram of a multi-mode intelligent substation simulation system 100 according to an embodiment of the present invention. As shown in fig. 1, the multi-mode intelligent substation simulation system of the present invention comprises a traditional metering loop, a semi-digital metering loop and a full-digital metering loop, and can visually compare common points and difference points of three metering modes of the traditional metering loop, the semi-digital metering loop and the full-digital metering loop, and check the difference of electric energy metering in three states in real time; the wiring of the three metering modes can be changed, trainees can conveniently simulate the field environment in a laboratory, related traditional mutual inductors, electronic mutual inductors, merging units, electronic electric energy meters and digital electric energy meters can be subjected to line combination detection in a targeted manner, and meanwhile, the existing platform resources can be utilized to perform calibration detection on the equipment under the field real environment of on-line or off-line simulation by combining corresponding calibration instruments and testers in a mode of being connected with a loop in parallel and in series; the practical problems of cognition, installation, debugging, operation and maintenance of the relevant equipment of the intelligent substation by a new person who primarily contacts the intelligent substation can be solved. The multi-mode intelligent substation simulation system 100 provided by the embodiment of the invention comprises: the system comprises a traditional electric energy metering module 101, a semi-digital electric energy metering module 102, an all-digital electric energy metering module 103, an electric energy meter information aggregation processing module 104 and a monitoring module 105.
Preferably, the conventional electric energy metering module 101 is connected to the electric energy meter information aggregation processing module, and is configured to perform electric energy metering on a current value and a voltage value output by a conventional current transformer and a conventional voltage transformer by using a standard electronic electric energy meter, so as to obtain an electric energy metering standard value.
Preferably, the semi-digital electric energy metering module 102 is connected to the electric energy meter information aggregation processing module, and is configured to merge and synchronize the current value and the voltage value output by the conventional current transformer and the conventional voltage transformer by using the analog quantity merging unit to obtain first intermediate data, and perform electric energy metering on the first intermediate data by using the digital electric energy meter to obtain a first electric energy metering value.
Preferably, the all-digital electric energy metering module 103 is connected to the electric energy meter information aggregation processing module, and is configured to merge and synchronize the current value and the voltage value output by the electronic current transformer and the electronic voltage transformer by using the digital quantity merging unit to obtain second intermediate data, and perform electric energy metering on the second intermediate data by using the digital electric energy meter to obtain a second electric energy metering value.
Preferably, wherein the system further comprises: a standard booster and a standard booster.
The standard current booster is respectively connected with the traditional current transformer and the electronic current transformer, is used for outputting a standard current value and respectively transmits the standard current value to the traditional current transformer and the electronic current transformer;
and the standard booster is respectively connected with the traditional voltage transformer and the electronic voltage transformer, is used for outputting a standard voltage value and respectively transmits the standard voltage value to the traditional voltage transformer and the electronic voltage transformer.
Preferably, the electric energy meter information aggregation processing module 104 is respectively connected to a conventional electric energy metering module, a semi-digital electric energy metering module and a full-digital electric energy metering module, and is configured to calculate a metering error of the semi-digital electric energy metering module and the full-digital electric energy metering module by using the electric energy metering standard value, the first electric energy metering value and the second electric energy metering value.
In the embodiment of the invention, the metering errors of the semi-digital electric energy metering module and the full-digital electric energy metering module are calculated by using a relative error calculation formula.
Preferably, the monitoring module 105 is connected to the electric energy meter information aggregation processing module and the merging unit information aggregation processing module, and is configured to monitor a process of determining a metering error.
Preferably, wherein the system further comprises: and the merging unit information aggregation processing module is respectively connected with the analog quantity merging unit and the digital quantity merging unit and is used for carrying out electric energy metering on the first intermediate data and the second intermediate data so as to obtain a first electric energy metering check value and a second electric energy check value.
Preferably, wherein the system further comprises: the system comprises an electronic transformer calibrator, a merging unit tester and a digital electric energy meter calibrator.
The electronic transformer calibrator is connected with the electronic voltage transformer and the electronic current transformer and used for calibrating errors of the electronic voltage transformer and the electronic current transformer.
And the merging unit tester is connected with the analog quantity merging unit and the digital quantity merging unit and is used for verifying the errors of the analog quantity merging unit and the digital quantity merging unit.
The digital electric energy meter calibrator is connected with the digital electric energy meter and used for calibrating errors of the digital electric energy meter.
Preferably, wherein the system further comprises: three-phase analog arbitrary wave transmitter and three-phase digital arbitrary wave transmitter.
The three-phase analog arbitrary wave transmitter is connected with the analog quantity merging unit and used for simulating the secondary output of the traditional mutual inductor, outputting a preset analog mutual inductor fault waveform and transmitting the preset analog mutual inductor fault waveform to the analog quantity merging unit so as to calculate the electric energy metering error under the fault condition.
The three-phase digital arbitrary wave transmitter is connected with the digital quantity merging unit and used for simulating secondary output of the electronic transformer, outputting a preset digital transformer fault waveform and transmitting the preset digital transformer fault waveform to the digital quantity merging unit so as to calculate the electric energy metering error under the fault condition.
Fig. 2 is an exemplary diagram of a multi-mode intelligent substation simulation system according to an embodiment of the present invention. As shown in fig. 2, the multi-mode intelligent substation simulation system includes: the system comprises a booster, a voltage regulator, a current booster, a standard PT (potential Transformer), a standard CT (Current Transformer), a protocol converter, a switch, an electronic transformer calibrator, a merging unit tester, a digital electric energy meter calibrator, a merging unit MU (Multi-user), a protocol converter, a three-phase analog arbitrary wave transmitter and a three-phase digital arbitrary wave transmitter. And the software of the upper computer of the simulation system running on the PC controls the protocol converter through a serial port protocol, the protocol converter is matched with the three-phase voltage regulator and the current booster at the rear end, and the three-phase voltage and current values set by the system are output. The traditional metering loop, the semi-digital metering loop and the full-digital metering loop simultaneously acquire a voltage value and a current value which are set and output by a system, accumulate electric energy, and obtain respective electric energy metering errors in three metering modes by comparing the electric energy accumulated by each electric energy meter in a preset time period so as to comprehensively consider the electric energy computing errors of the three metering modes under different voltage and current values. In addition, the electronic transformer calibrator can be used for carrying out analog calibration on errors of the electronic transformer, the merging unit tester is used for carrying out calibration on errors of the merging unit, the digital electric energy meter calibrator is used for calibrating the digital electric energy meter, and reasons for error formation among the semi-digital metering loop, the full-digital metering loop and the traditional metering loop are searched. In addition, the three-phase digital power source and the three-phase analog power source are mainly used for simulating secondary output of a traditional mutual inductor and an electronic mutual inductor, and the three-phase digital power source and the three-phase analog power source can output specific analog or digital mutual inductor fault waveforms for simulating electric energy errors under three metering modes under fault conditions and exploring the anti-interference performance of the three metering modes.
FIG. 3 is a schematic diagram of a three metrology mode group line according to an embodiment of the present invention. As shown in fig. 3, includes: conventional metering loops, semi-digital metering loops, and all-digital metering loops. The traditional metering loop consists of traditional transformers (CT and PT) and a standard electronic electric energy meter; the semi-digital metering loop consists of traditional mutual inductors (CT and PT), an analog quantity merging unit and a digital electric energy meter; the full digital metering loop consists of an electronic transformer (ECT, EVT), a digital quantity merging unit and a digital electric energy meter. The traditional metering loop is mainly used in the transformer substation constructed in the early stage; the semi-digital metering mode is mainly used in the intelligent transformation of the traditional transformer substation; the all-digital metering mode is mainly used in newly-built intelligent substations with voltage levels of 220kV and below.
In the implementation mode of the invention, the output voltage and current are regulated by regulating the standard booster and the standard current booster, the voltage loops of the three metering loops are connected in parallel, and the current loops are connected in series, so that the obtained source voltage and current quantity are consistent. The traditional metering loop comprises a standard electronic electric energy meter which directly collects the secondary output of the traditional PT and CT, and accumulates electric energy to obtain the electric energy metering standard value. The traditional voltage and current transformers in the semi-digital metering loop are secondarily output to the analog quantity merging unit, the analog quantity merging unit outputs first intermediate data to the digital electric energy meter through an I EC61850 protocol, and the digital electric energy meter accumulates electric energy after analysis to obtain a first electric energy metering value. The secondary output of the electronic voltage and current transformers in the full-digital metering loop is directly sent to the digital quantity input merging unit, the digital quantity merging unit outputs second intermediate data to the digital electric energy meter through an I EC61850 protocol, and the digital electric energy meter analyzes the second intermediate data and then accumulates electric energy to obtain a second electric energy metering value. The electric energy meter information aggregation processing module examines errors of the accumulated electric energy in the semi-digital metering loop and the full-digital metering loop by taking the accumulated electric energy of the traditional metering loop as a reference. Specifically, the electric energy meter information aggregation processing module reads the electric energy metering standard value, the first electric energy metering value and the second electric energy metering value through a 485 protocol, and calculates the metering errors of the semi-digital electric energy metering module and the full-digital electric energy metering module by using the electric energy metering standard value, the first electric energy metering value and the second electric energy metering value, so as to realize the check of the errors of the electric energy accumulated in the semi-digital metering loop and the full-digital metering loop. The electric energy meter information aggregation processing module reads electric energy values under the three metering loops through a 485 protocol or other protocols, and calculates electric energy errors of the three metering loops. In addition, the analog quantity merging unit and the digital quantity merging unit also send messages to the merging unit aggregation processing module, and the digital quantity signals transmitted by the merging unit are compared with the electric energy calculated by the traditional metering loop for verification, so that the electric energy errors under different working modes are explored; and reading the corresponding electric energy value through an integrated monitoring platform (monitoring module) at the rear end, and monitoring error calculation.
Fig. 4 is a flowchart of a multi-mode intelligent substation simulation method 400 according to an embodiment of the present invention. As shown in fig. 4, the multi-mode intelligent substation simulation method provided by the embodiment of the present invention starts from step 401, and performs electric energy measurement on the current value and the voltage value output by the conventional current transformer and the conventional voltage transformer by using the conventional electric energy measurement module and using the standard electronic energy meter in step 401 to obtain the electric energy measurement standard value.
In step 402, the semi-digital electric energy metering module is used for merging and synchronizing the current value and the voltage value output by the traditional current transformer and the traditional voltage transformer by using the analog quantity merging unit to obtain first intermediate data, and the digital electric energy meter is used for measuring the electric energy of the first intermediate data to obtain a first electric energy metering value.
In step 403, the digital quantity merging unit is utilized to merge and synchronize the current value and the voltage value output by the electronic current transformer and the electronic voltage transformer by the all-digital electric energy metering module to obtain second intermediate data, and the digital electric energy meter is utilized to meter the electric energy of the second intermediate data to obtain a second electric energy metering value.
Preferably, wherein the method further comprises: outputting a standard current value by using a standard current booster, and respectively transmitting the standard current value to a traditional current transformer and an electronic current transformer; and outputting a standard voltage value by using a standard booster, and respectively transmitting the standard voltage value to the traditional voltage transformer and the electronic voltage transformer.
Preferably, wherein the method further comprises: and utilizing the merging unit information aggregation processing module to measure the electric energy according to the first intermediate data and the second intermediate data so as to obtain a first electric energy measurement check value and a second electric energy check value.
In step 404, calculating the metering errors of the semi-digital electric energy metering module and the all-digital electric energy metering module by using the electric energy meter information aggregation processing module and the electric energy metering standard value, the first electric energy metering value and the second electric energy metering value.
In step 405, the process of determining the metrology error is monitored with a monitoring module.
Preferably, wherein the method further comprises: the error of the electronic voltage transformer and the error of the electronic current transformer are verified by using an electronic transformer calibrator; utilizing a merging unit tester to verify the errors of the analog quantity merging unit and the digital quantity merging unit; and checking the error of the digital electric energy meter by using a digital electric energy meter checker.
Preferably, wherein the method further comprises:
simulating secondary output of a traditional transformer by using a three-phase simulation arbitrary wave transmitter, outputting a preset simulation type transformer fault waveform, and transmitting the preset simulation type transformer fault waveform to an analog quantity merging unit to calculate an electric energy metering error under a fault condition;
and simulating secondary output of the electronic transformer by using the three-phase digital arbitrary wave transmitter, outputting a preset digital transformer fault waveform, and transmitting the preset digital transformer fault waveform to the digital quantity merging unit to calculate the electric energy metering error under the fault condition.
The multimode intelligent substation simulation method 400 according to the embodiment of the present invention corresponds to the multimode intelligent substation simulation system 100 according to another embodiment of the present invention, and details thereof are not repeated herein.
The invention has been described with reference to a few embodiments. However, other embodiments of the invention than the one disclosed above are equally possible within the scope of the invention, as would be apparent to a person skilled in the art from the appended patent claims.
Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a/an/the [ device, component, etc ]" are to be interpreted openly as referring to at least one instance of said device, component, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless explicitly stated.
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 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.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A multi-mode intelligent substation simulation system, the system comprising:
the traditional electric energy metering module is connected with the electric energy meter information aggregation processing module and used for metering electric energy by utilizing a standard electronic electric energy meter on current values and voltage values output by a traditional current transformer and a traditional voltage transformer so as to obtain an electric energy metering standard value;
the semi-digital electric energy metering module is connected with the electric energy meter information aggregation processing module and used for merging and synchronously processing the current value and the voltage value output by the traditional current transformer and the traditional voltage transformer by using the analog quantity merging unit so as to obtain first intermediate data and metering the electric energy of the first intermediate data by using the digital electric energy meter so as to obtain a first electric energy metering value;
the digital electric energy metering module is connected with the electric energy meter information aggregation processing module and is used for merging and synchronously processing the current value and the voltage value output by the electronic current transformer and the electronic voltage transformer by using the digital quantity merging unit so as to obtain second intermediate data and metering the electric energy of the second intermediate data by using the digital electric energy meter so as to obtain a second electric energy metering value;
the electric energy meter information aggregation processing module is respectively connected with the traditional electric energy metering module, the semi-digital electric energy metering module and the all-digital electric energy metering module and is used for calculating the metering errors of the semi-digital electric energy metering module and the all-digital electric energy metering module by utilizing the electric energy metering standard value, the first electric energy metering value and the second electric energy metering value;
and the monitoring module is connected with the electric energy meter information aggregation processing module and the merging unit information aggregation processing module and is used for monitoring the process of determining the metering error.
2. The system of claim 1, further comprising:
the standard current booster is respectively connected with the traditional current transformer and the electronic current transformer, is used for outputting a standard current value and respectively transmits the standard current value to the traditional current transformer and the electronic current transformer;
and the standard voltage booster is respectively connected with the traditional voltage transformer and the electronic voltage transformer, is used for outputting a standard voltage value, and is respectively transmitted to the traditional voltage transformer and the electronic voltage transformer.
3. The system of claim 1, further comprising:
and the merging unit information aggregation processing module is respectively connected with the analog quantity merging unit and the digital quantity merging unit and is used for carrying out electric energy metering on the first intermediate data and the second intermediate data so as to obtain a first electric energy metering check value and a second electric energy check value.
4. The system of claim 1, further comprising:
the electronic transformer calibrator is connected with the electronic voltage transformer and the electronic current transformer and used for calibrating errors of the electronic voltage transformer and the electronic current transformer;
the merging unit tester is connected with the analog quantity merging unit and the digital quantity merging unit and used for verifying the errors of the analog quantity merging unit and the digital quantity merging unit;
the digital electric energy meter calibrator is connected with the digital electric energy meter and used for calibrating errors of the digital electric energy meter.
5. The system of claim 1, further comprising:
the three-phase analog arbitrary wave transmitter is connected with the analog quantity merging unit and is used for simulating the secondary output of the traditional mutual inductor, outputting a preset analog mutual inductor fault waveform and transmitting the preset analog mutual inductor fault waveform to the analog quantity merging unit so as to calculate the electric energy metering error under the fault condition;
and the three-phase digital arbitrary wave transmitter is connected with the digital quantity merging unit and used for simulating the secondary output of the electronic transformer, outputting a preset digital transformer fault waveform and transmitting the preset digital transformer fault waveform to the digital quantity merging unit so as to calculate the electric energy metering error under the fault condition.
6. A method of simulation using the multi-mode intelligent substation simulation system of any of claims 1-5, the method comprising:
the method comprises the steps that a traditional electric energy metering module is used for metering electric energy by utilizing a standard electronic electric energy meter for current values and voltage values output by a traditional current transformer and a traditional voltage transformer so as to obtain an electric energy metering standard value;
the method comprises the steps that a semi-digital electric energy metering module is used for utilizing an analog quantity merging unit to merge and synchronously process current values and voltage values output by a traditional current transformer and a traditional voltage transformer so as to obtain first intermediate data, and a digital electric energy meter is used for carrying out electric energy metering on the first intermediate data so as to obtain a first electric energy metering value;
the digital electric energy metering module is used for merging and synchronously processing the current value and the voltage value output by the electronic current transformer and the electronic voltage transformer by using a digital quantity merging unit so as to obtain second intermediate data, and the digital electric energy meter is used for metering the electric energy of the second intermediate data so as to obtain a second electric energy metering value;
calculating the metering errors of the semi-digital electric energy metering module and the full-digital electric energy metering module by using the electric energy meter information aggregation processing module and the electric energy metering standard value, the first electric energy metering value and the second electric energy metering value;
and monitoring the process of determining the metering error by using a monitoring module.
7. The method of claim 6, further comprising:
outputting a standard current value by using a standard current booster, and respectively transmitting the standard current value to a traditional current transformer and an electronic current transformer;
and outputting a standard voltage value by using a standard booster, and respectively transmitting the standard voltage value to the traditional voltage transformer and the electronic voltage transformer.
8. The method of claim 6, further comprising:
and utilizing the merging unit information aggregation processing module to measure the electric energy according to the first intermediate data and the second intermediate data so as to obtain a first electric energy measurement check value and a second electric energy check value.
9. The method of claim 6, further comprising:
the error of the electronic voltage transformer and the error of the electronic current transformer are verified by using an electronic transformer calibrator;
utilizing a merging unit tester to verify the errors of the analog quantity merging unit and the digital quantity merging unit;
and checking the error of the digital electric energy meter by using a digital electric energy meter checker.
10. The method of claim 6, further comprising:
simulating secondary output of a traditional transformer by using a three-phase simulation arbitrary wave transmitter, outputting a preset simulation type transformer fault waveform, and transmitting the preset simulation type transformer fault waveform to an analog quantity merging unit to calculate an electric energy metering error under a fault condition;
and simulating secondary output of the electronic transformer by using the three-phase digital arbitrary wave transmitter, outputting a preset digital transformer fault waveform, and transmitting the preset digital transformer fault waveform to the digital quantity merging unit to calculate the electric energy metering error under the fault condition.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308143A (en) * | 2020-03-27 | 2020-06-19 | 辛成辉 | Electric energy meter metering circuit |
| CN113050017A (en) * | 2021-03-02 | 2021-06-29 | 合肥工业大学 | Intelligent error state monitoring and fault diagnosis system for electronic transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308143A (en) * | 2020-03-27 | 2020-06-19 | 辛成辉 | Electric energy meter metering circuit |
| CN113050017A (en) * | 2021-03-02 | 2021-06-29 | 合肥工业大学 | Intelligent error state monitoring and fault diagnosis system for electronic transformer |
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