A method and system for checking power grid simulation data
By acquiring attribute data from power grid simulation data, calculating parameter calibration data, and performing automatic verification, the problem of power grid simulation data verification is solved, power flow convergence and adjustment efficiency are improved, and the safe and stable operation of the power grid is supported.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA INT ENG CONSULTING CORP
- Filing Date
- 2022-07-25
- Publication Date
- 2026-05-29
Smart Images
Figure CN115906383B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of power system planning technology, and more specifically, to a method and system for verifying power grid simulation data. Background Technology
[0002] With the growth of load, the continuous expansion of the power grid, and the rapid development of DC transmission and new energy sources, my country's power grid has become a modern power system containing a large number of power electronic devices and spanning multiple regions with AC and DC interconnections. Its scale and complexity are unprecedented, and its system characteristics have undergone profound changes. Accidents that have occurred in the power grids of the UK and Australia have shown that the interaction between power electronic devices and the power system can easily trigger chain reactions and cause large-scale blackouts.
[0003] Since power grid operation cannot be interrupted, power grid planning schemes, design and construction schemes, operation control, and security defense strategies cannot be verified through destructive testing in actual power grids. Simulation analysis is a key means to understand power grid characteristics. Both domestically and internationally, simulation tools are used to study the safety and stability of large power grids, supporting the safe operation and coordinated control of actual power grids. Only through simulation calculations can we analyze and understand power grid characteristics, verify the accuracy of theoretical analysis and security defense strategies, and provide quantitative decision support for the power grid.
[0004] The rationality of power flow convergence is a crucial preliminary step in static analysis and transient stability calculations of power systems. Researchers have developed numerous improved algorithms to enhance the convergence performance of power flow calculations. However, analysts often still need to invest significant effort in adjusting the initial power flow to achieve better convergence and lay a solid data foundation for subsequent static analysis, transient stability calculations, and short-circuit current calculations. A significant factor affecting power flow convergence performance is the unreasonable parameters of power grid equipment. Even for engineers with decades of experience, quickly identifying unreasonable equipment parameters from thousands of data points is no easy task. Therefore, how to quickly verify simulation data has become an urgent problem to solve. Summary of the Invention
[0005] This invention proposes a method and system for verifying power grid simulation data to solve the problem of how to efficiently and accurately verify power grid simulation data.
[0006] To address the above problems, according to one aspect of the present invention, a method for verifying power grid simulation data is provided, the method comprising:
[0007] Acquire power grid simulation data; wherein each data item in the power grid simulation data includes: attribute data and actual parameter data;
[0008] For any given data item, standard data corresponding to that data item is determined based on the attribute data of that data item, and parameter calibration data corresponding to that data item is determined based on the standard data and attribute data.
[0009] For any data item, the actual data of the parameter is verified based on the parameter calibration data.
[0010] Preferably, for the data item of line type, the attribute data includes: line voltage level, line type and line length, and the actual data, standard data and parameter verification data all include: line resistance, line reactance and / or line susceptance.
[0011] For data items related to transformer type, the attribute data includes: transformer voltage level; actual parameter data and parameter verification data, including: equivalent conductance, magnetizing susceptance, transformer reactance and / or transformer resistance; and the standard data, including: no-load loss, short-circuit loss, no-load current and / or short-circuit impedance.
[0012] Preferably, the step of determining the standard data corresponding to any given data item based on its attribute data includes:
[0013] For any given data item, determine the corresponding standard form based on the type of that data item, and match the standard data in the standard form based on the attribute data in that data item to determine the standard data corresponding to that data item.
[0014] Preferably, determining the parameter calibration data corresponding to any one of the data items based on the standard data and attribute data includes:
[0015] For any given data item, when the type of that data item is line type, the parameter calibration data corresponding to that data item is determined using the following method:
[0016]
[0017]
[0018]
[0019] Where R', X', and B′ represent the line resistance calibration data, line reactance calibration data, and line susceptance calibration data, respectively; R1, X1, and B1 represent the standard data for line resistance per unit length, line reactance standard data, and line susceptance standard data, respectively; L represents the line length; S B U is the system's baseline capacity.N The voltage level of the system;
[0020] For any given data item, when the type of that data item is transformer type, the parameter calibration data corresponding to that data item is determined using the following method:
[0021]
[0022]
[0023]
[0024]
[0025]
[0026] Among them, G T 'This is the equivalent conductance calibration data; B' T 'This is the excitation susceptance calibration data; X' T1 '、X T2 'and X T3 'These are the transformer reactance calibration data for different phases; R T ' is the transformer resistance calibration data; P0 is the no-load loss standard data; P k I0 represents standard data for short-circuit loss; X represents standard data for no-load current. T12 X T23 and X T13 These are the standard data for transformer reactance between different phases; S N S represents the rated apparent power of the transformer. 1N S 2N and S 3N These are the rated apparent power of the transformer's high-voltage winding, the rated apparent power of the medium-voltage winding, and the rated apparent power of the low-voltage winding, respectively.
[0027] Preferably, the step of verifying the actual parameter data based on the parameter calibration data for any given data item includes:
[0028] For any data item, if the relative error between the actual data of any parameter in that data item and the corresponding parameter calibration data is less than or equal to a preset relative error threshold, then that data item is determined to have passed the verification; otherwise, if the relative error between the actual data of any parameter in that data item and the corresponding parameter calibration data is not less than or equal to the preset relative error threshold, then that data item is determined to have failed the verification.
[0029] Preferably, the method further includes:
[0030] For any given data item, if only one parameter in that data item has a relative error greater than a preset relative error threshold between its actual data and the corresponding parameter calibration data, the threshold is used to correct the actual data of that parameter. If multiple parameters in that data item have relative errors greater than the preset relative error threshold between their actual data and the corresponding parameter calibration data, an error message is returned for manual intervention.
[0031] According to another aspect of the present invention, a verification system for power grid simulation data is provided, characterized in that the system comprises:
[0032] A simulation data acquisition unit is used to acquire power grid simulation data; wherein, each data item in the power grid simulation data includes: attribute data and actual parameter data;
[0033] The calibration data acquisition unit is used to determine, for any given data item, the standard data corresponding to that data item based on the attribute data of that data item, and to determine the parameter calibration data corresponding to that data item based on the standard data and the attribute data.
[0034] The verification unit is used to verify the actual data of the parameter based on the parameter calibration data for any given data item.
[0035] Preferably, for the data item of line type, the attribute data includes: line voltage level, line type and line length, and the actual data, standard data and parameter verification data all include: line resistance, line reactance and / or line susceptance.
[0036] For data items related to transformer type, the attribute data includes: transformer voltage level; actual parameter data and parameter verification data, including: equivalent conductance, magnetizing susceptance, transformer reactance and / or transformer resistance; and the standard data, including: no-load loss, short-circuit loss, no-load current and / or short-circuit impedance.
[0037] Preferably, the calibration data acquisition unit, for any given data item, determines the standard data corresponding to that data item based on the attribute data of that data item, including:
[0038] For any given data item, determine the corresponding standard form based on the type of that data item, and match the standard data in the standard form based on the attribute data in that data item to determine the standard data corresponding to that data item.
[0039] Preferably, the calibration data acquisition unit determines the parameter calibration data corresponding to any one of the data items based on the standard data and attribute data, including:
[0040] For any given data item, when the type of that data item is line type, the parameter calibration data corresponding to that data item is determined using the following method:
[0041]
[0042]
[0043]
[0044] Where R', X', and B′ represent the line resistance calibration data, line reactance calibration data, and line susceptance calibration data, respectively; R1, X1, and B1 represent the standard data for line resistance per unit length, line reactance standard data, and line susceptance standard data, respectively; L represents the line length; S B U represents the system's baseline capacity. N The voltage level of the system;
[0045] For any given data item, when the type of that data item is transformer type, the parameter calibration data corresponding to that data item is determined using the following method:
[0046]
[0047]
[0048]
[0049]
[0050]
[0051] Among them, G T 'This is the equivalent conductance calibration data; B' T 'This is the excitation susceptance calibration data; X' T1 '、X T2 'and X T3 'These are the transformer reactance calibration data for different phases; R T ' is the transformer resistance calibration data; P0 is the no-load loss standard data; P k I0 represents standard data for short-circuit loss; X represents standard data for no-load current. T12 X T23 and X T13 These are the standard data for transformer reactance between different phases; S NS represents the rated apparent power of the transformer. 1N S 2N and S 3N These are the rated apparent power of the transformer's high-voltage winding, the rated apparent power of the medium-voltage winding, and the rated apparent power of the low-voltage winding, respectively.
[0052] Preferably, the verification unit, for any data item, verifies the actual data of the parameter based on the parameter calibration data, including:
[0053] For any data item, if the relative error between the actual data of any parameter in that data item and the corresponding parameter calibration data is less than or equal to a preset relative error threshold, then that data item is determined to have passed the verification; otherwise, if the relative error between the actual data of any parameter in that data item and the corresponding parameter calibration data is not less than or equal to the preset relative error threshold, then that data item is determined to have failed the verification.
[0054] Preferably, the system further includes:
[0055] The correction unit is used to correct the actual data of any parameter by applying a threshold when only one parameter in the data item has a relative error greater than the corresponding parameter calibration data; and to return an error message for manual intervention when multiple parameters in the data item have relative errors greater than the preset relative error threshold.
[0056] According to another aspect of the present invention, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the steps in a method for verifying power grid simulation data.
[0057] According to another aspect of the present invention, the present invention provides an electronic device, comprising:
[0058] The aforementioned computer-readable storage medium; and
[0059] One or more processors for executing a program in the computer-readable storage medium.
[0060] This invention provides a method and system for verifying power grid simulation data, comprising: acquiring power grid simulation data; wherein each data item in the power grid simulation data includes: attribute data and actual parameter data; for any data item, determining standard data corresponding to the data item based on the attribute data of the data item, and determining parameter calibration data corresponding to the data item based on the standard data and attribute data; for any data item, verifying the actual parameter data based on the parameter calibration data. This invention embeds typical parameters of basic power grid data into a power system simulation program, automatically generates verification forms based on the characteristics of the simulation data, and automatically corrects power grid parameters. This solves the problem of poor convergence in basic power grid simulation data, improves the efficiency of data flow adjustment, and provides technical support for the scientific planning and design, safe and stable operation of the power grid. The method of this invention is applicable to power grids of various voltage levels and scales and has strong robustness. Attached Figure Description
[0061] Exemplary embodiments of the present invention can be more fully understood by referring to the following figures:
[0062] Figure 1 A flowchart of a power grid simulation data verification method 100 according to an embodiment of the present invention;
[0063] Figure 2 A flowchart illustrating rapid verification of power grid simulation data according to an embodiment of the present invention;
[0064] Figure 3 This is a schematic diagram of the structure of a power grid simulation data verification system 300 according to an embodiment of the present invention. Detailed Implementation
[0065] Exemplary embodiments of the invention will now be described with reference to the accompanying drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to fully and completely disclose the invention and to fully convey its scope to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the drawings is not intended to limit the invention. In the drawings, the same units / elements are referred to by the same reference numerals.
[0066] Unless otherwise stated, the terms used herein (including technical terms) have their common meaning as understood by one of ordinary skill in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.
[0067] Figure 1This is a flowchart of a power grid simulation data verification method 100 according to an embodiment of the present invention. Figure 1 As shown, the power grid simulation data verification method provided by this invention embeds typical parameters of the power grid basic data into the power system simulation program. Based on the characteristics of the simulation data, it automatically generates verification forms and automatically corrects the power grid parameters. This solves the problem of poor convergence in the power grid basic simulation data, improves the efficiency of data flow adjustment, and provides technical support for the scientific planning and design, safe and stable operation of the power grid. The method of this invention is applicable to power grids of various voltage levels and scales and has strong robustness. The power grid simulation data verification method 100 provided by this invention begins at step 101, where power grid simulation data is acquired. Each data item in the power grid simulation data includes attribute data and actual parameter data.
[0068] Preferably, for the data item of line type, the attribute data includes: line voltage level, line type and line length, and the actual data, standard data and parameter verification data all include: line resistance, line reactance and / or line susceptance.
[0069] For data items related to transformer type, the attribute data includes: transformer voltage level; actual parameter data and parameter verification data, including: equivalent conductance, magnetizing susceptance, transformer reactance and / or transformer resistance; and the standard data, including: no-load loss, short-circuit loss, no-load current and / or short-circuit impedance.
[0070] Power flow data in power systems includes generator output, load conditions, line parameters, transformer parameters, and DC-related parameters. The accuracy of each parameter significantly impacts power flow convergence. Generator output and load conditions are statistically analyzed in the simulation results of mature simulation software. Nationwide DC transmission parameters are fixed and are a key focus in simulation data construction. Therefore, this method identifies line parameters and transformer parameters as error-prone parameters in simulation data. When acquiring simulation data, for line-type data items, attribute data includes: line voltage level, line type, and line length. The actual, standard, and verification parameter data all include: line resistance, line reactance, and / or line susceptance. For transformer-type data items, attribute data includes: transformer voltage level. The actual and verification parameter data include: equivalent conductance, magnetizing susceptance, transformer reactance, and / or transformer resistance. The standard data includes: no-load loss, short-circuit loss, no-load current, and / or short-circuit impedance.
[0071] In step 102, for any data item, standard data corresponding to the data item is determined based on the attribute data of the data item, and parameter calibration data corresponding to the data item is determined based on the standard data and attribute data.
[0072] Preferably, the step of determining the standard data corresponding to any given data item based on its attribute data includes:
[0073] For any given data item, determine the corresponding standard form based on the type of that data item, and match the standard data in the standard form based on the attribute data in that data item to determine the standard data corresponding to that data item.
[0074] Preferably, determining the parameter calibration data corresponding to any one of the data items based on the standard data and attribute data includes:
[0075] For any given data item, when the type of that data item is line type, the parameter calibration data corresponding to that data item is determined using the following method:
[0076]
[0077]
[0078]
[0079] Where R', X', and B′ represent the line resistance calibration data, line reactance calibration data, and line susceptance calibration data, respectively; R1, X1, and B1 represent the standard data for line resistance per unit length, line reactance standard data, and line susceptance standard data, respectively; L represents the line length; S B U represents the system's baseline capacity. N The voltage level of the system;
[0080] For any given data item, when the type of that data item is transformer type, the parameter calibration data corresponding to that data item is determined using the following method:
[0081]
[0082]
[0083]
[0084]
[0085]
[0086] Among them, G T 'This is the equivalent conductance calibration data; B' T 'This is the excitation susceptance calibration data; X' T1 '、X T2 'and X T3 'These are the transformer reactance calibration data for different phases; R T ' is the transformer resistance calibration data; P0 is the no-load loss standard data; P k I0 represents standard data for short-circuit loss; X represents standard data for no-load current. T12 X T23 and X T13 These are the standard data for transformer reactance between different phases; S N The rated apparent power of the transformer is S. For three-winding transformers with different capacities, the maximum capacity is taken. 1N S 2N and S 3N These are the rated apparent power of the transformer's high-voltage winding, the rated apparent power of the medium-voltage winding, and the rated apparent power of the low-voltage winding, respectively.
[0087] Combination Figure 2 As shown, in this invention, relevant equipment parameter values or ranges are found in power system design manuals and various specifications and standards. For example, for overhead line parameters, the line parameters can be obtained from the "Power Engineering Design Manual - Overhead Transmission Line Design"; the parameter ranges for various transformer capacities from 220kV to 1000kV can be obtained from "GB / T 6451-2015 Technical Parameters and Requirements for Oil-Immersed Power Transformers", "JB / T10780-2007 Technical Parameters for 750kV Oil-Immersed Power Transformers", and "Technical Specifications for Main Transformers for 1000kV Systems".
[0088] In the power system simulation program, Line Parameter Form 1 and Transformer Parameter Form 2 are pre-built. Form 1 provides the unit length resistance, reactance, and susceptance parameters for commonly used line models at the 220kV voltage level; Form 2 provides the commonly used parameters for three-phase, three-winding transformers at the 220kV voltage level (31500kV·A to 240000kV·A). Based on Form 1, Form 2, which stores parameter calibration data, is generated for verifying actual data. The parameter calibration data in Form 2 is then compared with the actual parameter data to verify the power grid simulation data.
[0089] In this invention, power system simulation data generally uses per-unit values. Before verification, the program first generates a corresponding verification form based on the attribute information in the actual parameter data and a preset line parameter form or transformer parameter form. The verification form stores the parameter verification data.
[0090] Taking a 500kV power grid system as an example, this illustrates the process of forming the verification form. The 110kV and below systems in this system are treated equivalently. For line parameters, two voltage levels are included: 500kV and 220kV. There are n 500kV lines and m 220kV lines. The baseline capacity S of the system is determined based on the simulation data. B and the voltage level U N Converted to per-unit values, the parameter calibration data in Form 2 is generated for verification. Form 2 should contain data items for all lines in the system, totaling (n+m) rows. For a specific 220kV line parameter, the parameters given in Form 1 are unit length parameters. These are obtained by multiplying the line type and line length l entered in the simulation data to obtain the corresponding nominal values of R, X, B, and C, such as R = R1 × l, X = X1 × l, B = B1 × l, C = C1 × l. Therefore, the parameter calibration data corresponding to this line is:
[0091]
[0092] Where R', X', and B′ represent the line resistance calibration data, line reactance calibration data, and line susceptance calibration data, respectively; R1, X1, and B1 represent the standard data for line resistance per unit length, line reactance standard data, and line susceptance standard data, respectively; L represents the line length; S B U represents the system's baseline capacity. N This refers to the voltage level of the system.
[0093] For transformer parameters, there are p units of 500kV voltage-level transformers and q units of 220kV voltage-level transformers. Based on the system's baseline capacity S in the simulation data... B and the voltage level U N Converted to per-unit values, the parameter calibration data for the transformer parameters in Form 2 is generated for verification. Form 2 should contain all (p+q) row data items for all transformers in the system. For a specific 220kV three-phase three-winding transformer, its verification parameter is the equivalent conductance G. T ', Excitation susceptance B T ', Reactance X T ', resistance R T That is:
[0094]
[0095]
[0096]
[0097]
[0098]
[0099]
[0100] For a transformer with a capacity of 100 / 100 / 100: R T2 '=R T3 '=R T1 '
[0101] For a transformer with a capacity of 100 / 100 / (100 / n): R T2 '=R T1 ', R T3 '=n 2 R T1 ',
[0102] Among them, G T 'This is the equivalent conductance calibration data; B' T 'This is the excitation susceptance calibration data; X' T1 '、X T2 'and X T3 'These are the transformer reactance calibration data for different phases; R T ' is the transformer resistance calibration data; P0 is the no-load loss standard data; P k I0 represents standard data for short-circuit loss; X represents standard data for no-load current. T12 X T23 and X T13 These are the standard data for transformer reactance between different phases; S N This represents the rated apparent power of the transformer. For three-winding transformers with different capacities, the maximum capacity should be used; S 1N S 2N and S 3N These are the rated apparent power of the transformer's high-voltage winding, the rated apparent power of the medium-voltage winding, and the rated apparent power of the low-voltage winding, respectively.
[0103] The line verification parameters and transformer verification parameters together form Verification Form 2, which stores calibration data.
[0104] In step 103, for any data item, the actual data of the parameter is verified based on the parameter calibration data.
[0105] Preferably, the step of verifying the actual parameter data based on the parameter calibration data for any given data item includes:
[0106] For any data item, if the relative error between the actual data of any parameter in that data item and the corresponding parameter calibration data is less than or equal to a preset relative error threshold, then that data item is determined to have passed the verification; otherwise, if the relative error between the actual data of any parameter in that data item and the corresponding parameter calibration data is not less than or equal to the preset relative error threshold, then that data item is determined to have failed the verification.
[0107] Preferably, the method further includes:
[0108] For any given data item, if only one parameter in that data item has a relative error greater than a preset relative error threshold between its actual data and the corresponding parameter calibration data, the threshold is used to correct the actual data of that parameter. If multiple parameters in that data item have relative errors greater than the preset relative error threshold between their actual data and the corresponding parameter calibration data, an error message is returned for manual intervention.
[0109] In this invention, the actual parameter data in the simulation data is compared with the data in the corresponding verification form. Considering that the actual power grid parameters may differ from the theoretical values, a preset relative error threshold of ±10% is set. That is, when the difference between the actual power grid parameters and the form parameters is within ±10%, the power grid parameters are considered reasonable and do not need to be modified. Parameters exceeding the threshold are modified. Specifically, for any data item, if the relative error between the actual parameter data and the corresponding parameter calibration data is less than or equal to 10%, then the data item is determined to have passed the verification; conversely, if the relative error between the actual parameter data and the corresponding parameter calibration data is not less than or equal to 10%, then the data item is determined to have failed the verification.
[0110] In this invention, reasonable power grid data parameters do not require modification; however, data exceeding thresholds needs correction. Here, unreasonable data may involve a single parameter exceeding the threshold or multiple parameters exceeding the threshold. Threshold correction is only applied when a single parameter exceeds the threshold. If all parameters exceed the threshold, other parameters not involved in power flow calculations may be incorrect, such as line length in line parameters or transformer capacity in transformer parameters. For transformers, equivalent conductance and magnetizing susceptance are sometimes ignored in the data; this is considered normal and does not require correction. If multiple parameters in a data point exceed the threshold, the parameters are not corrected temporarily, a threshold-exceeding warning is output, manual intervention is required, and the process returns to the previous step for re-verification. Once the verification is successful, new, corrected data is automatically generated for simulation calculations.
[0111] This invention addresses the problems of massive amounts of power grid simulation data, the time-consuming and labor-intensive process of manually checking parameter accuracy, poor power flow convergence, and the resulting impact on the efficiency of power system safety and stability analysis. It proposes a rapid verification method for power grid simulation data. This method includes: identifying the main data parameters affecting data convergence; using an embedded parameter range form within the program; and comparing the data with the embedded form during power flow calculation to provide prompts and automatically correct the power grid data parameters. The proposed method can be applied to the verification of power grid data at various voltage levels and of various scales, improving simulation data convergence, further enhancing the efficiency of adjusting power flow, and providing technical support for ensuring the safe and stable operation of the power grid.
[0112] Figure 3 This is a schematic diagram of the structure of a power grid simulation data verification system 300 according to an embodiment of the present invention. Figure 3 As shown, the power grid simulation data verification system 300 provided in this embodiment of the invention includes: a simulation data acquisition unit 301, a calibration data acquisition unit 302, and a verification unit 303.
[0113] Preferably, the simulation data acquisition unit 301 is used to acquire power grid simulation data; wherein each data item in the power grid simulation data includes: attribute data and actual parameter data.
[0114] Preferably, for the data item of line type, the attribute data includes: line voltage level, line type and line length, and the actual data, standard data and parameter verification data all include: line resistance, line reactance and / or line susceptance.
[0115] For data items related to transformer type, the attribute data includes: transformer voltage level; actual parameter data and parameter verification data, including: equivalent conductance, magnetizing susceptance, transformer reactance and / or transformer resistance; and the standard data, including: no-load loss, short-circuit loss, no-load current and / or short-circuit impedance.
[0116] Preferably, the calibration data acquisition unit 302 is used to determine, for any given data item, standard data corresponding to that data item based on the attribute data of that data item, and parameter calibration data corresponding to that data item based on the standard data and the attribute data.
[0117] Preferably, the calibration data acquisition unit 302, for any given data item, determines the standard data corresponding to that data item based on the attribute data of that data item, including:
[0118] For any given data item, determine the corresponding standard form based on the type of that data item, and match the standard data in the standard form based on the attribute data in that data item to determine the standard data corresponding to that data item.
[0119] Preferably, the calibration data acquisition unit 302 determines the parameter calibration data corresponding to any one of the data items based on the standard data and attribute data, including:
[0120] For any given data item, when the type of that data item is line type, the parameter calibration data corresponding to that data item is determined using the following method:
[0121]
[0122]
[0123]
[0124] Where R', X', and B′ represent the line resistance calibration data, line reactance calibration data, and line susceptance calibration data, respectively; R1, X1, and B1 represent the standard data for line resistance per unit length, line reactance standard data, and line susceptance standard data, respectively; L represents the line length; S B U is the system's baseline capacity. N The voltage level of the system;
[0125] For any given data item, when the type of that data item is transformer type, the parameter calibration data corresponding to that data item is determined using the following method:
[0126]
[0127]
[0128]
[0129]
[0130]
[0131] Among them, G T 'This is the equivalent conductance calibration data; B' T 'This is the excitation susceptance calibration data; X' T1 '、X T2 'and X T3 'These are the transformer reactance calibration data for different phases; R T ' is the transformer resistance calibration data; P0 is the no-load loss standard data; Pk I0 represents standard data for short-circuit loss; X represents standard data for no-load current. T12 X T23 and X T13 These are the standard data for transformer reactance between different phases; S N S represents the rated apparent power of the transformer. 1N S 2N and S 3N These are the rated apparent power of the transformer's high-voltage winding, the rated apparent power of the medium-voltage winding, and the rated apparent power of the low-voltage winding, respectively.
[0132] Preferably, the verification unit 303 is used to verify the actual data of the parameter based on the parameter calibration data for any data item.
[0133] Preferably, the verification unit 303, for any data item, verifies the actual data of the parameter based on the parameter calibration data, including:
[0134] For any data item, if the relative error between the actual data of any parameter in that data item and the corresponding parameter calibration data is less than or equal to a preset relative error threshold, then that data item is determined to have passed the verification; otherwise, if the relative error between the actual data of any parameter in that data item and the corresponding parameter calibration data is not less than or equal to the preset relative error threshold, then that data item is determined to have failed the verification.
[0135] Preferably, the system further includes:
[0136] The correction unit is used to correct the actual data of any parameter by applying a threshold when only one parameter in the data item has a relative error greater than the corresponding parameter calibration data; and to return an error message for manual intervention when multiple parameters in the data item have relative errors greater than the preset relative error threshold.
[0137] The power grid simulation data verification system 300 of this embodiment corresponds to the power grid simulation data verification method 100 of another embodiment of this invention, and will not be described again here.
[0138] According to another aspect of the present invention, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the steps in a method for verifying power grid simulation data.
[0139] According to another aspect of the present invention, the present invention provides an electronic device, comprising:
[0140] The aforementioned computer-readable storage medium; and
[0141] One or more processors for executing a program in the computer-readable storage medium.
[0142] The invention has been described with reference to a few embodiments. However, as will be known to those skilled in the art, and as defined in the appended claims, other embodiments besides those disclosed above fall equivalently within the scope of the invention.
[0143] Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless otherwise expressly defined herein. All references to “a / the / the [device, component, etc.]” are openly interpreted as at least one instance of said device, component, etc., unless otherwise expressly stated. The steps of any method disclosed herein need not be performed in the exact order disclosed unless explicitly stated otherwise.
[0144] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can 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, etc.) containing computer-usable program code.
[0145] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can 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, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0146] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1The function specified in one or more boxes.
[0147] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0148] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.
Claims
1. A method for verifying power grid simulation data, characterized in that, The method includes: Acquire power grid simulation data; wherein each data item in the power grid simulation data includes: attribute data and actual parameter data; For any given data item, standard data corresponding to that data item is determined based on the attribute data of that data item, and parameter calibration data corresponding to that data item is determined based on the standard data and attribute data. For any data item, the actual data of the parameter is verified based on the parameter calibration data; The step of determining the parameter calibration data corresponding to any one of the data items based on the standard data and attribute data includes: For any given data item, when the type of that data item is line type, the parameter calibration data corresponding to that data item is determined using the following method: ， ， ， in, , and These represent the calibration data for line resistance, line reactance, and line susceptance, respectively; R1, X1, and B1 represent the standard data for line resistance, line reactance, and line susceptance per unit length, respectively; L represents the line length. U is the system's baseline capacity. N The voltage level of the system; For any given data item, when the type of that data item is transformer type, the parameter calibration data corresponding to that data item is determined using the following method: ， ， ， ， ， ， in, Equivalent conductance calibration data; For magnetization susceptance calibration data; , and These are transformer reactance calibration data for different phases; For transformer resistance calibration data; This is the standard data for no-load loss; This is standard data for short-circuit loss; This is the standard data for no-load current; , and These are the standard data for transformer reactance between different phases; This is the rated apparent power of the transformer; , and These are the rated apparent power of the transformer's high-voltage winding, the rated apparent power of the medium-voltage winding, and the rated apparent power of the low-voltage winding, respectively. Wherein, for any data item, verifying the actual data of the parameter based on the parameter calibration data includes: For any data item, if the relative error between the actual data of any parameter in that data item and the corresponding parameter calibration data is less than or equal to a preset relative error threshold, then that data item is determined to have passed the verification; otherwise, if the relative error between the actual data of any parameter in that data item and the corresponding parameter calibration data is not less than or equal to the preset relative error threshold, then that data item is determined to have failed the verification.
2. The method according to claim 1, characterized in that, For the data item of line type, the attribute data includes: line voltage level, line type and line length. The actual data, standard data and parameter verification data all include: line resistance, line reactance and / or line susceptance. For data items related to transformer type, the attribute data includes: transformer voltage level; actual parameter data and parameter verification data, including: equivalent conductance, magnetizing susceptance, transformer reactance and / or transformer resistance; and the standard data, including: no-load loss, short-circuit loss, no-load current and / or short-circuit impedance.
3. The method according to claim 1, characterized in that, For any given data item, determining the standard data corresponding to that data item based on its attribute data includes: For any given data item, determine the corresponding standard form based on the type of that data item, and match the standard data in the standard form based on the attribute data in that data item to determine the standard data corresponding to that data item.
4. The method according to claim 1, characterized in that, The method further includes: For any given data item, if only one parameter in that data item has a relative error greater than a preset relative error threshold between its actual data and the corresponding parameter calibration data, the threshold is used to correct the actual data of that parameter. If multiple parameters in that data item have relative errors greater than the preset relative error threshold between their actual data and the corresponding parameter calibration data, an error message is returned for manual intervention.
5. A verification system for power grid simulation data, characterized in that, The system includes: A simulation data acquisition unit is used to acquire power grid simulation data; wherein, each data item in the power grid simulation data includes: attribute data and actual parameter data; The calibration data acquisition unit is used to determine, for any given data item, the standard data corresponding to that data item based on the attribute data of that data item, and to determine the parameter calibration data corresponding to that data item based on the standard data and the attribute data. The verification unit is used to verify the actual data of the parameter based on the parameter calibration data for any given data item. The calibration data acquisition unit determines the parameter calibration data corresponding to any one of the data items based on the standard data and attribute data, including: For any given data item, when the type of that data item is line type, the parameter calibration data corresponding to that data item is determined using the following method: ， ， ， in, , and These represent the calibration data for line resistance, line reactance, and line susceptance, respectively; R1, X1, and B1 represent the standard data for line resistance, line reactance, and line susceptance per unit length, respectively; L represents the line length. U represents the system's baseline capacity. N The voltage level of the system; For any given data item, when the type of that data item is transformer type, the parameter calibration data corresponding to that data item is determined using the following method: ， ， ， ， ， ， in, Equivalent conductance calibration data; For magnetization susceptance calibration data; , and These are transformer reactance calibration data for different phases; For transformer resistance calibration data; This is the standard data for no-load loss; This is standard data for short-circuit loss; This is the standard data for no-load current; , and These are the standard data for transformer reactance between different phases; This is the rated apparent power of the transformer; , and These are the rated apparent power of the transformer's high-voltage winding, the rated apparent power of the medium-voltage winding, and the rated apparent power of the low-voltage winding, respectively. The verification unit, for any data item, verifies the actual data of the parameter based on the parameter calibration data, including: For any data item, if the relative error between the actual data of any parameter in that data item and the corresponding parameter calibration data is less than or equal to a preset relative error threshold, then that data item is determined to have passed the verification; otherwise, if the relative error between the actual data of any parameter in that data item and the corresponding parameter calibration data is not less than or equal to the preset relative error threshold, then that data item is determined to have failed the verification.
6. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the steps of the method as described in any one of claims 1-4.
7. An electronic device, characterized in that, include: The computer-readable storage medium as described in claim 6; as well as One or more processors for executing a program in the computer-readable storage medium.