CN112231920A - Method and system for determining parameters of micro-grid simulation model - Google Patents
Method and system for determining parameters of micro-grid simulation model Download PDFInfo
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- CN112231920A CN112231920A CN202011137994.3A CN202011137994A CN112231920A CN 112231920 A CN112231920 A CN 112231920A CN 202011137994 A CN202011137994 A CN 202011137994A CN 112231920 A CN112231920 A CN 112231920A
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Abstract
The embodiment of the invention discloses a method and a system for determining parameters of a micro-grid simulation model. The method comprises the steps of performing test tests on sub-modules of equipment to be tested to determine test data, performing parameter identification according to the test data, generating an identification parameter set, performing verification tests on the microgrid according to a preset verification test scheme, and determining verification test data; the micro-grid is composed of a plurality of devices to be tested, the same simulation test is carried out on the micro-grid simulation model according to the verification test carried out on the micro-grid by the identification parameter set in contrast to the micro-grid, the simulation test data of the micro-grid are obtained, and the parameters of the micro-grid simulation model are adjusted according to the verification test data and the simulation test data. The technical scheme provided by the embodiment of the invention solves the problem that the existing parameter determination method of the simulation model of the microgrid is difficult to give consideration to the input parameters and the output parameters of different electrical equipment of the microgrid, so that the production cost of the microgrid is high.
Description
Technical Field
The embodiment of the invention relates to the technical field of micro-grids, in particular to a method and a system for determining parameters of a micro-grid simulation model.
Background
The digital simulation technology plays an indispensable role in important planning of a micro-grid, such as system load flow calculation, short-circuit current calculation, stability analysis, various fault ride-through capability verification, final control algorithm, scheduling strategy and other work. Before the micro-grid is put into production, input parameters and output parameters of equipment in the micro-grid need to be simulated, and the existing parameter determination method of the simulation model of the micro-grid is difficult to give consideration to the input parameters and the output parameters of different electrical equipment of the micro-grid, so that the production cost of the micro-grid is high.
Disclosure of Invention
The embodiment of the invention provides a method and a system for determining parameters of a micro-grid simulation model, which aim to solve the problem that the existing method for determining parameters of the micro-grid simulation model is difficult to give consideration to input parameters and output parameters of different electrical equipment of a micro-grid, so that the production cost of the micro-grid is high.
In order to realize the technical problem, the invention adopts the following technical scheme:
the embodiment of the invention provides a method for determining parameters of a micro-grid simulation model, which comprises the following steps:
testing the sub-modules of the equipment to be tested to determine test data, performing parameter identification according to the test data, and generating an identification parameter set;
carrying out a verification test on the microgrid according to a preset verification test scheme to determine verification test data; the micro-grid consists of a plurality of devices to be tested;
according to the identification parameter set, carrying out the same simulation test on the microgrid simulation model in comparison with the verification test carried out on the microgrid to obtain simulation test data of the microgrid;
and adjusting parameters of the micro-grid simulation model according to the verification test data and the simulation test data.
Further, before the performing the same simulation test on the microgrid according to the verification test performed on the microgrid simulation model according to the identification parameter set and comparing the verification test with the microgrid to obtain simulation test data of the microgrid, the method further includes:
and determining an initial value of the micro-grid simulation model according to the identification parameter set.
Further, the step of performing a test on the sub-modules of the device to be tested to determine test data includes:
dividing the device to be tested into a plurality of device modules;
and controlling each equipment module to execute at least one sub-test and generating test data corresponding to the sub-tests one by one.
Further, the performing parameter identification according to the test data and generating an identification parameter set includes:
preprocessing the test data to obtain standard test data;
extracting characteristic parameters according to the standard test data based on an identification method to generate an identification parameter subset;
and generating an identification parameter set according to the identification parameter subset.
Further, the identifying-based method, extracting feature parameters according to the standard test data, and generating an identifying parameter subset, includes:
selecting an identification method corresponding to the sub-test;
analyzing and processing the test data generated by each sub-test, and extracting identification parameters corresponding to the sub-tests;
and collecting the identification parameters corresponding to the sub-tests into an identification parameter subset.
Further, the adjusting parameters of the microgrid simulation model according to the verification test data and the simulation test data includes:
and comparing the difference value of the verification test data and the simulation test data with a preset threshold value, and correcting the parameters of the microgrid simulation model when the difference value is greater than the preset threshold value.
Further, after adjusting parameters of the microgrid simulation model according to the verification test data and the simulation test data, the method further includes:
based on the micro-grid simulation model after parameter correction, carrying out a simulation test again;
and when the difference value is smaller than or equal to the preset threshold value, configuring the microgrid according to the identification parameter set and model parameters of the microgrid simulation model.
In a second aspect, an embodiment of the present invention further provides a parameter determination system for a microgrid simulation model, including:
the identification parameter set generation module is used for performing test tests on the sub-modules of the equipment to be tested to determine test data, performing parameter identification according to the test data and generating an identification parameter set;
the verification test data generation module is used for performing verification tests on the microgrid according to a preset verification test scheme and determining verification test data; the micro-grid consists of a plurality of devices to be tested;
the simulation test data generation module is used for carrying out the same simulation test on the micro-grid according to the verification test carried out on the micro-grid simulation model according to the identification parameter set so as to obtain simulation test data of the micro-grid;
and the parameter adjusting module is used for adjusting the parameters of the micro-grid simulation model according to the verification test data and the simulation test data.
Further, the system further comprises:
and the initial value determining module is used for determining the initial value of the micro-grid simulation model according to the identification parameter set.
Further, identifying a parameter set generation module, comprising:
the preprocessing unit is used for preprocessing the test data to obtain standard test data;
the identification parameter subset generating unit is used for extracting characteristic parameters according to the standard test data based on an identification method to generate an identification parameter subset;
and the identification parameter set generating unit is used for generating an identification parameter set according to the identification parameter subset.
The parameter determining method of the micro-grid simulation model comprises the steps of carrying out test tests on sub-modules of equipment to be tested to determine test data, carrying out parameter identification according to the test data, generating an identification parameter set, carrying out verification tests on the micro-grid according to a preset verification test scheme, and determining verification test data; the microgrid is composed of a plurality of devices to be tested, the same simulation test is carried out on a microgrid simulation model according to the verification test carried out on the microgrid by the identification parameter set in contrast, simulation test data of the microgrid are obtained, and parameters of the microgrid simulation model are adjusted according to the verification test data and the simulation test data. The parameter determination method of the microgrid simulation model provided by the embodiment of the invention can realize the test of different modules of different devices to be tested, output the test data, analyze and process the test data to generate the identification parameter set, perform the simulation test corresponding to the devices to be tested on the simulation platform to obtain the simulation test data of the microgrid, and adjust the parameters of the microgrid simulation model according to the verification test data and the simulation test data, so that the parameters of the microgrid simulation model take into account the parameters of the modules of the different devices to be tested, and the production cost of the microgrid is saved. The method solves the problem that the existing parameter determination method of the simulation model of the microgrid is difficult to give consideration to input parameters and output parameters of different electrical equipment of the microgrid, so that the production cost of the microgrid is high. .
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a flowchart of a method for determining parameters of a microgrid simulation model according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a method for determining parameters of a microgrid simulation model according to an embodiment of the present invention;
FIG. 3 is a flow chart of another method for determining parameters of a simulation model of a microgrid according to an embodiment of the present invention;
FIG. 4 is a flowchart of a method for determining a test result of a sub-module of a device under test according to test data provided by an embodiment of the present invention;
fig. 5 is a flowchart of a method for determining parameters of a microgrid simulation model according to an embodiment of the present invention;
fig. 6 is a flowchart of a method for determining parameters of a microgrid simulation model according to an embodiment of the present invention;
FIG. 7 is a flowchart of a method for determining parameters of a simulation model of a microgrid according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a parameter determination system of a microgrid simulation model according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a parameter determination system of another microgrid simulation model provided by an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a parameter determination system of a simulation model of a microgrid according to an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of a parameter determination system of a simulation model of a microgrid according to an embodiment of the present invention;
FIG. 12 is a schematic structural diagram of a parameter determination system of a simulation model of a microgrid according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of a parameter determination system of a microgrid simulation model according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The parameter identification work of the equipment to be tested has important significance on the planning and implementation of the simulation model and the micro-grid, the simulation model is ensured to have characteristics similar to or equal to those of actual equipment, the actual equipment is required to be tested under specific conditions, the test data is subjected to parameter identification, the identified parameters are brought into the simulation model, and the consistency of the test parameters and the identification parameters of the equipment is finally ensured to meet the design requirements through repeated debugging.
Fig. 1 is a flowchart of a method for determining parameters of a microgrid simulation model according to an embodiment of the present invention. Referring to fig. 1, a method for determining parameters of a microgrid simulation model provided in an embodiment of the present invention includes:
s101, performing test tests on the sub-modules of the equipment to be tested to determine test data, performing parameter identification according to the test data, and generating an identification parameter set.
Specifically, fig. 2 is a schematic structural diagram of a method for determining parameters of a microgrid simulation model according to an embodiment of the present invention. Referring to fig. 2, a device to be tested is placed on a physical platform 10, a simulation platform 20 is formed by simulation devices corresponding to the device to be tested, the simulation platform 20 performs data transmission with the physical platform 10 through a data router 30, the data router 30 serves as a uniform interface, and only data communication is performed between the physical platform 10 and the simulation platform 20, so that not only can independent design and independent development processes of the physical platform 10 and the simulation platform 20 be realized, but also one-to-many application of one physical platform 10 and a plurality of simulation platforms 20 can be realized, and not only is the complexity caused by serial design development avoided, but also the function expansion of the whole system of the physical platform 10 and the simulation platform 20 is easy to realize.
The method comprises the steps of testing equipment to be tested based on a physical platform 10, performing test tests on the equipment to be tested in modules according to test types, dividing the equipment to be tested into different modules according to test types corresponding to parameters to be tested, performing tests according to the modules corresponding to different test types, determining test data, extracting, analyzing and processing the test data corresponding to each module, achieving parameter identification, and generating an identification parameter set according to the result of the parameter identification. The simulation platform may include a device equivalent model 40 of the device to be tested and a microgrid model 50, the device equivalent models 40 of different devices to be tested may constitute different microgrid models 50, and the same microgrid model 50 may include a plurality of device equivalent models 40.
S102, carrying out a verification test on the microgrid according to a preset verification test scheme, and determining verification test data; wherein, the microgrid comprises a plurality of devices to be tested.
Specifically, the micro-grid is formed by connecting a plurality of devices to be tested in a physical platform, parameters of the devices to be tested are set according to an identification parameter set, verification tests are carried out on the micro-grid, and verification test data of the micro-grid verification tests are generated.
S103, according to the identification parameter set, carrying out verification tests on the micro-grid simulation model in a contrasting manner, and carrying out the same simulation tests to obtain simulation test data of the micro-grid.
Specifically, according to the identification parameter set output on the physical platform, a simulation test corresponding to the physical platform is performed on the microgrid simulation model on the simulation platform, and simulation test data are generated.
And S104, adjusting parameters of the micro-grid simulation model according to the verification test data and the simulation test data.
Specifically, when the simulation test data are not matched with the corresponding verification test data, the parameters of the microgrid simulation model are adjusted according to the difference between the simulation test data and the verification test data until the simulation test data are matched with the corresponding verification test data, so that the microgrid to be put into production is configured according to the parameters of the microgrid simulation model.
The method for determining parameters of a simulation model of a microgrid provided by the embodiment divides devices to be tested into different device modules according to test types, can realize the test of different modules of different devices to be tested and output test data, analyzing and processing the test data to generate an identification parameter set, performing a simulation test corresponding to the device to be tested on a simulation platform to obtain simulation test data of the microgrid, according to the verification test data and the simulation test data, parameters of the micro-grid simulation model are adjusted, so that the parameters of the micro-grid simulation model are taken into account for parameters of modules of different devices to be tested, the production cost of the micro-grid is saved, and the problem that the production cost of the micro-grid is high due to the fact that the existing parameter determination method of the micro-grid simulation model is difficult to take account for input parameters and output parameters of different electrical devices of the micro-grid is solved.
Optionally, fig. 3 is a flowchart of another parameter determination method for a microgrid simulation model according to an embodiment of the present invention. On the basis of the foregoing embodiment, referring to fig. 3, the method for determining parameters of a microgrid simulation model provided in this embodiment includes:
s101, performing test tests on the sub-modules of the equipment to be tested to determine test data, performing parameter identification according to the test data, and generating an identification parameter set.
S102, carrying out a verification test on the microgrid according to a preset verification test scheme, and determining verification test data; wherein, the microgrid comprises a plurality of devices to be tested.
S201, determining an initial value of the micro-grid simulation model according to the identification parameter set.
Specifically, after the micro-grid simulation model is built, an initial value of the micro-grid simulation model is set as an identification parameter set generated by a physical platform through parameter identification, so that the micro-grid simulation model starts a simulation test at the initial value.
S103, according to the identification parameter set, carrying out verification tests on the micro-grid simulation model in a contrasting manner, and carrying out the same simulation tests to obtain simulation test data of the micro-grid.
And S104, adjusting parameters of the micro-grid simulation model according to the verification test data and the simulation test data.
Optionally, fig. 4 is a flowchart of a method for determining a test trial by using test trial data of a device under test and sub-modules according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 4, performing a test on the sub-modules of the device to be tested to determine test data includes:
s301, dividing the device to be tested into a plurality of device modules.
Specifically, one device to be tested is divided into a plurality of device modules according to the type of test tests to be performed by the device to be tested. For example, the device to be tested may be an inverter, for example, parameters of the inverter, such as an under-voltage parameter, a high-voltage parameter, a current parameter, an active power parameter, a reactive power parameter, and the like, need to be tested, the device to be tested may be divided into an under-voltage device module, a high-voltage device module, a current device module, an active power device module, and a reactive power device module, the device to be tested may be divided into smaller device modules according to the test, the device to be tested may be divided into smaller device modules, output data of different parameters of the device to be tested may be simulated, so that the finally obtained parameters of the simulation model of the microgrid are suitable for the output data of each device module of each device to be tested, the commissioning requirement of the microgrid is met, and the commissioning cost of the microgrid.
S302, controlling each equipment module to execute at least one sub-test and generating test data corresponding to the sub-tests one by one.
Specifically, each device module may perform one or more sub-tests, for example, n tests are required in total to complete a test on a certain device under test, it is determined that the ith test (i ═ 1, …, n) needs to be performed, and then, for the sub-test implementation test scheme Ei, process recording data Ri of the sub-test implementation test scheme Ei, that is, test data corresponding to the sub-tests one to one, is obtained.
Illustratively, the method can be used for carrying out an under-voltage test on equipment to be tested based on an under-voltage equipment module, outputting under-voltage test data, carrying out a high-voltage test on the equipment to be tested based on a high-voltage equipment module, outputting high-voltage test data, carrying out a current test on the equipment to be tested based on a current equipment module, outputting current test data, carrying out an active power test on the equipment to be tested based on an active power equipment module, outputting active power test data, carrying out a reactive power test on the equipment to be tested based on a reactive power equipment module, outputting reactive power test data, and realizing the test on different equipment modules of different equipment to be tested and outputting test data. The method comprises the steps of analyzing and processing test data to generate an identification parameter set, carrying out a simulation test corresponding to a device to be tested on a simulation platform to obtain simulation test data of the microgrid, and adjusting parameters of a microgrid simulation model according to verification test data and the simulation test data, so that the parameters of the microgrid simulation model take parameters of modules of different devices to be tested into account, and the production cost of the microgrid is saved. Meanwhile, for different micro-grids needing to use the same equipment to be tested, the identification parameters of the modules of the equipment to be tested are suitable for different micro-grid models, different micro-grids can be produced according to the parameters of the simulation model of the micro-grid, and the time cost of repeated simulation can be reduced.
Optionally, fig. 5 is a flowchart of a parameter determination method for a microgrid simulation model according to an embodiment of the present invention. On the basis of the foregoing embodiment, referring to fig. 5, the method for determining parameters of a microgrid simulation model provided in this embodiment includes:
s401, preprocessing the test data to obtain standard test data.
Specifically, the test data is preprocessed, including but not limited to extracting fundamental wave positive sequence components of voltage or current, active current components, reactive current components, active power and reactive power, etc., of the test data, the extracted related data is processed into per unit values, and standard test data is obtained by adopting the same time scale and resolution as those of the simulation platform.
S402, based on an identification method, extracting characteristic parameters according to the standard test data, and generating an identification parameter subset.
Optionally, based on the identification method, extracting the feature parameters according to the standard test data, and generating the subset of identification parameters includes: selecting an identification method corresponding to the sub-test; analyzing and processing the test data generated by each sub-test, and extracting identification parameters corresponding to the sub-tests; and collecting the identification parameters corresponding to the sub-tests into an identification parameter subset.
Specifically, the identification algorithm Ai corresponding to the sub-test implementation test scheme Ei is selected, and parameter identification is performed on each equipment module, where the specific identification method applied here includes, but is not limited to, a step response method, an impulse response method, a frequency response method, a correlation analysis method, a spectrum analysis method, a least square method, a maximum likelihood method, and the like. The method includes the steps that equipment to be tested is decomposed according to equipment modules, each equipment module is tested and covered by various contained sub-test combinations, test data output by each sub-test executed by each equipment module is used as an input signal of an identification method, and parameters of the input signal are identified. Finally, the corresponding subset of the identification parameters obtained by each type of sub-test is P1, P2, P3, … … and Pn respectively. And storing the corresponding identification parameters Pi into the storage equipment after online identification, and judging whether all the sub-tests aiming at the equipment to be tested are completely executed or not, if not, continuing to perform the (i + 1) th test.
And S403, generating an identification parameter set according to the identification parameter subset.
Specifically, after the parameter identification of all the equipment modules is finished, the identified parameter set P ═ { P1, P2, P3, … …, Pn } is generated, and the identified parameter set P ═ Pi | i ═ 1,2, …, n } is submitted as an output to the simulation platform for parameter initialization of the microgrid simulation model.
S102, carrying out a verification test on the microgrid according to a preset verification test scheme, and determining verification test data; wherein, the microgrid comprises a plurality of devices to be tested.
S103, according to the identification parameter set, carrying out verification tests on the micro-grid simulation model in a contrasting manner, and carrying out the same simulation tests to obtain simulation test data of the micro-grid.
And S104, adjusting parameters of the micro-grid simulation model according to the verification test data and the simulation test data.
Optionally, fig. 6 is a flowchart of a parameter determination method for a microgrid simulation model according to an embodiment of the present invention. On the basis of the foregoing embodiment, referring to fig. 6, the method for determining parameters of a microgrid simulation model provided in this embodiment includes:
s101, performing test tests on the sub-modules of the equipment to be tested to determine test data, performing parameter identification according to the test data, and generating an identification parameter set.
S102, carrying out a verification test on the microgrid according to a preset verification test scheme, and determining verification test data; wherein, the microgrid comprises a plurality of devices to be tested.
S103, according to the identification parameter set, carrying out verification tests on the micro-grid simulation model in a contrasting manner, and carrying out the same simulation tests to obtain simulation test data of the micro-grid.
S501, comparing the difference value between the verification test data and the simulation test data with a preset threshold value, and correcting the parameters of the microgrid simulation model when the difference value is larger than the preset threshold value.
Specifically, when the difference value between the verification test data and the simulation test data is larger than a preset threshold value, the parameters of the microgrid simulation model set at the previous time are corrected, and the simulation test is carried out again. If the deviation precision meets the verification standard of the model, the identification process is finished, the verification of the micro-grid simulation model is finished, and the final parameters of the simulation model are obtained.
Optionally, fig. 7 is a flowchart of a parameter determination method for a microgrid simulation model according to an embodiment of the present invention. On the basis of the foregoing embodiment, referring to fig. 7, the method for determining parameters of a microgrid simulation model provided in this embodiment includes:
s101, performing test tests on the sub-modules of the equipment to be tested to determine test data, performing parameter identification according to the test data, and generating an identification parameter set.
S102, carrying out a verification test on the microgrid according to a preset verification test scheme, and determining verification test data; wherein, the microgrid comprises a plurality of devices to be tested.
S103, according to the identification parameter set, carrying out verification tests on the micro-grid simulation model in a contrasting manner, and carrying out the same simulation tests to obtain simulation test data of the micro-grid.
And S104, adjusting parameters of the micro-grid simulation model according to the verification test data and the simulation test data.
And S601, based on the micro-grid simulation model after parameter correction, carrying out a simulation test again.
Specifically, based on the micro-grid simulation model after parameter correction, the simulation test is carried out again, the simulation test outputs simulation test data, the simulation experiment data is evaluated according to the evaluation index, illustratively, under-voltage simulation test can be performed on the virtual to-be-tested equipment based on the microgrid simulation model, under-voltage simulation test data is output, high-voltage simulation test is performed on the virtual to-be-tested equipment based on the microgrid simulation model, high-voltage simulation test data is output, current simulation test is performed on the virtual to-be-tested equipment based on the microgrid simulation model, current simulation test data is output, active power simulation test is performed on the virtual to-be-tested equipment based on the microgrid simulation model, active power simulation test data is output, reactive power simulation test is performed on the virtual to-be-tested equipment based on the microgrid simulation model, and reactive power simulation test data is output. The evaluation index includes, but is not limited to, a maximum error, a relative error, an average error, and the like. The simulation test data can be evaluated according to the evaluation index, illustratively, the evaluation index can comprise an under-voltage simulation test evaluation index, a high-voltage simulation test evaluation index, a current simulation test evaluation index, an active power simulation test evaluation index and a reactive power simulation test evaluation index, when the under-voltage simulation test data meets the under-voltage simulation test evaluation index, the high-voltage simulation test data meets the high-voltage simulation test evaluation index, the current simulation test data meets the current simulation test evaluation index, the active power simulation test data meets the active power simulation test evaluation index, and the reactive power simulation test data meets the reactive power simulation test evaluation index, so that the finally determined identification parameter can meet the evaluation index of the microgrid simulation model.
And S602, when the difference value is smaller than or equal to the preset threshold value, configuring the microgrid according to the identification parameters and the model parameters of the microgrid simulation model.
Specifically, a microgrid is configured according to the corrected identification parameter set and model parameters of the microgrid simulation model, a model and parameters of each type of distributed electrical equipment are established in detail, and the established microgrid simulation model realizes simulation verification of the identification parameters of equipment modules of equipment to be tested, so that the parameters of the microgrid simulation model meet the production requirements of the microgrid.
Optionally, fig. 8 is a schematic structural diagram of a parameter determination system of a microgrid simulation model according to an embodiment of the present invention. On the basis of the foregoing embodiment, referring to fig. 8, a parameter determination system of a microgrid simulation model provided by an embodiment of the present invention includes:
the identification parameter set generating module 71 is used for performing a test on the equipment submodules to be tested to determine test data, performing parameter identification according to the test data and generating an identification parameter set;
the verification test data generation module 72 is used for performing verification tests on the microgrid according to a preset verification test scheme and determining verification test data; the micro-grid consists of a plurality of devices to be tested;
the simulation test data generation module 73 is configured to perform the same simulation test on the microgrid simulation model in comparison with the verification test performed on the microgrid according to the identification parameter set, so as to obtain simulation test data of the microgrid;
and a parameter adjusting module 74, configured to adjust parameters of the microgrid simulation model according to the verification test data and the simulation test data.
Optionally, fig. 9 is a schematic structural diagram of another parameter determination system of a microgrid simulation model according to an embodiment of the present invention. On the basis of the foregoing embodiment, referring to fig. 9, the parameter determination system of the microgrid simulation model provided in the embodiment of the present invention further includes:
an initial value determining module 75, configured to determine an initial value of the microgrid simulation model according to the set of identification parameters.
Optionally, fig. 10 is a schematic structural diagram of a parameter determination system of a microgrid simulation model according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 10, the identification parameter set generating module 71 includes:
the preprocessing unit 711 is configured to preprocess the test data to obtain standard test data;
an identification parameter subset generating unit 712, configured to extract feature parameters according to the standard test data based on an identification method, and generate an identification parameter subset;
an identification parameter set generating unit 713, configured to generate an identification parameter set according to the identification parameter subset.
Optionally, fig. 11 is a schematic structural diagram of a parameter determination system of a microgrid simulation model according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 11, the recognition parameter subset generating unit 712 includes:
an identification method selection subunit 81 for selecting an identification method corresponding to the sub-test;
an identification parameter extraction subunit 82, configured to analyze the test data generated by each of the sub-tests, and extract an identification parameter corresponding to the sub-test;
and a set generating subunit 83, configured to aggregate the identification parameters corresponding to the sub-tests into an identification parameter subset.
Optionally, fig. 12 is a schematic structural diagram of a parameter determination system of a microgrid simulation model according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 12, the parameter adjusting module 74 includes:
and the parameter correcting unit 741 is configured to compare a difference between the verification test data and the simulation test data with a preset threshold, and correct a parameter of the microgrid simulation model when the difference is greater than the preset threshold.
Optionally, fig. 13 is a schematic structural diagram of a parameter determination system of a microgrid simulation model according to an embodiment of the present invention. On the basis of the foregoing embodiment, referring to fig. 13, the parameter determination system of the microgrid simulation model provided in the embodiment of the present invention further includes:
a simulation test module 76, configured to perform a simulation test again based on the microgrid simulation model after parameter correction;
and a parameter configuration module 77, configured to configure the microgrid according to the identification parameter set and the model parameters of the microgrid simulation model when the difference is smaller than or equal to the preset threshold.
The parameter determination system of the microgrid simulation model provided by the embodiment comprises an identification parameter set generation module, a verification test data generation module, a simulation test data generation module and a parameter adjustment module, wherein the identification parameter set generation module performs a test on sub-modules of equipment to be tested to determine test data, performs parameter identification according to the test data and generates an identification parameter set, and the verification test data generation module performs a verification test on a microgrid according to a preset verification test scheme to determine verification test data; the microgrid is composed of a plurality of devices to be tested, a simulation test data generation module carries out the same simulation test on a microgrid simulation model according to the verification test carried out on the microgrid by the identification parameter set in contrast to obtain simulation test data of the microgrid, and a parameter adjustment module adjusts parameters of the microgrid simulation model according to the verification test data and the simulation test data. The parameter determining system of the microgrid simulation model provided by the embodiment of the invention can realize test tests on different modules of different devices to be tested, output test data, analyze and process the test data to generate an identification parameter set, perform simulation tests corresponding to the devices to be tested on a simulation platform to obtain simulation test data of a microgrid, and adjust the parameters of the microgrid simulation model according to verification test data and the simulation test data, so that the parameters of the microgrid simulation model take into account the parameters of the modules of the different devices to be tested, and the production cost of the microgrid is saved. The method solves the problem that the existing parameter determination method of the simulation model of the microgrid is difficult to give consideration to input parameters and output parameters of different electrical equipment of the microgrid, so that the production cost of the microgrid is high.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for determining parameters of a microgrid simulation model is characterized by comprising the following steps:
testing the sub-modules of the equipment to be tested to determine test data, performing parameter identification according to the test data, and generating an identification parameter set;
carrying out a verification test on the microgrid according to a preset verification test scheme to determine verification test data; the micro-grid consists of a plurality of devices to be tested;
according to the identification parameter set, carrying out the same simulation test on the microgrid simulation model in comparison with the verification test carried out on the microgrid to obtain simulation test data of the microgrid;
and adjusting parameters of the micro-grid simulation model according to the verification test data and the simulation test data.
2. The method of claim 1, wherein before performing the same simulation test on the microgrid simulation model in comparison with the verification test performed on the microgrid according to the set of identification parameters to obtain simulation test data of the microgrid, the method further comprises:
and determining an initial value of the micro-grid simulation model according to the identification parameter set.
3. The method of claim 1, wherein performing test trials on the sub-modules of the device under test to determine test trial data comprises:
dividing the device to be tested into a plurality of device modules;
and controlling each equipment module to execute at least one sub-test and generating test data corresponding to the sub-tests one by one.
4. The method of claim 3, wherein the performing parameter identification from the test trial data and generating the identified parameter set comprises:
preprocessing the test data to obtain standard test data;
extracting characteristic parameters according to the standard test data based on an identification method to generate an identification parameter subset;
and generating an identification parameter set according to the identification parameter subset.
5. The method of claim 4, wherein the extracting feature parameters from the standard test data based on the identification method to generate an identification parameter subset comprises:
selecting an identification method corresponding to the sub-test;
analyzing and processing the test data generated by each sub-test, and extracting identification parameters corresponding to the sub-tests;
and collecting the identification parameters corresponding to the sub-tests into an identification parameter subset.
6. The method of claim 2, wherein adjusting parameters of the microgrid simulation model based on the verification test data and the simulation test data comprises:
and comparing the difference value of the verification test data and the simulation test data with a preset threshold value, and correcting the parameters of the microgrid simulation model when the difference value is greater than the preset threshold value.
7. The method of claim 6, further comprising, after adjusting parameters of the microgrid simulation model based on the verification test data and the simulation test data:
based on the micro-grid simulation model after parameter correction, carrying out a simulation test again;
and when the difference value is smaller than or equal to the preset threshold value, configuring the microgrid according to the identification parameter set and model parameters of the microgrid simulation model.
8. A system for determining parameters of a simulation model for a microgrid, comprising:
the identification parameter set generation module is used for performing test tests on the sub-modules of the equipment to be tested to determine test data, performing parameter identification according to the test data and generating an identification parameter set;
the verification test data generation module is used for performing verification tests on the microgrid according to a preset verification test scheme and determining verification test data; the micro-grid consists of a plurality of devices to be tested;
the simulation test data generation module is used for carrying out the same simulation test on the micro-grid according to the verification test carried out on the micro-grid simulation model according to the identification parameter set so as to obtain simulation test data of the micro-grid;
and the parameter adjusting module is used for adjusting the parameters of the micro-grid simulation model according to the verification test data and the simulation test data.
9. The system of claim 8, further comprising:
and the initial value determining module is used for determining the initial value of the micro-grid simulation model according to the identification parameter set.
10. The system of claim 8, wherein the recognition parameter set generating module comprises:
the preprocessing unit is used for preprocessing the test data to obtain standard test data;
the identification parameter subset generating unit is used for extracting characteristic parameters according to the standard test data based on an identification method to generate an identification parameter subset;
and the identification parameter set generating unit is used for generating an identification parameter set according to the identification parameter subset.
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