CN112084644A - Dynamic equivalence method and device for power system and storage medium - Google Patents
Dynamic equivalence method and device for power system and storage medium Download PDFInfo
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Abstract
The invention discloses a dynamic equivalence method, a device and a storage medium of a power system, wherein the method comprises the following steps: acquiring original power grid data to be dynamically equivalent; removing control model parameters of the generator from original power grid data, and performing data format conversion; carrying out dynamic equivalence on the power grid data subjected to format conversion to obtain first-equivalence power grid data, recording equivalence generator data of equivalence generators, and acquiring control model parameters and rated capacity corresponding to each generator from the original power grid data; and obtaining equivalent control model parameters corresponding to the equivalent generators according to the total rated capacity of the equivalent generators, the control model parameters corresponding to each generator and the rated capacity, and converting the format of the first-class power grid data into the original format to obtain third-class power grid data corresponding to the original power grid data. The invention can provide a simple method for dynamic equivalence of power system simulation software in the absence of dynamic equivalence programs.
Description
Technical Field
The invention relates to the technical field of power system equivalence, in particular to a dynamic equivalence method, a dynamic equivalence device and a storage medium of a power system.
Background
Dynamic equivalence of power systems is a modeling method for simplifying power systems to reduce scale. The scale of the power system is reduced by dividing the power system into an internal system and an external system, reserving the internal system and boundary nodes between the internal system and the external system, and equating the external system. The steady-state and transient characteristics of the internal system after dynamic equivalence should remain substantially the same as before the equivalence.
Because the dynamic equivalence process is complex, the dynamic equivalence process is generally required to be completed by using a dynamic equivalence program, and currently applied power system simulation software has multiple types (such as BPA, DSP, PSASP, PSSE, NETOMAC and the like), and the data formats and models of the power system simulation software are different, but not all the power system simulation software has a special dynamic equivalence program available.
In view of the above problems, one method is to develop a corresponding dynamic equivalent program, and the method has the disadvantage that the development workload is too large; the other method is to use the existing dynamic equivalent program in other simulation software, but complex model and data conversion is needed, and no simple method for solving the problem exists at present.
Disclosure of Invention
The embodiment of the invention aims to provide a dynamic equivalence method, a device and a storage medium for an electric power system, which can carry out dynamic equivalence on a universal model and data in the electric power system by utilizing an existing dynamic equivalence program, and convert a complex model and data through calculation, thereby providing a simple and convenient method for dynamic equivalence needed by some electric power system simulation software in the absence of the dynamic equivalence program.
To achieve the above object, an embodiment of the present invention provides a dynamic equivalence method for an electric power system, including the following steps:
acquiring original power grid data to be dynamically equivalent;
after the control model parameters of the generator are removed from the original power grid data, data format conversion is carried out, and a first data format of the original power grid data is converted into a second data format which can be identified by software containing a dynamic equivalent program;
carrying out dynamic equivalence on the power grid data subjected to format conversion to obtain first-equivalence power grid data;
obtaining equivalent generator data of an equivalent generator according to the first equivalent power grid data; wherein the equivalent generator data includes a total rated capacity of the equivalent generators, which generators the equivalent generators are consolidated by, and a type of each of the generators;
acquiring control model parameters and rated capacity corresponding to each generator from the original power grid data according to the equivalent generator data;
obtaining equivalent control model parameters corresponding to the equivalent generators according to the total rated capacity of the equivalent generators, the control model parameters corresponding to each generator and the rated capacity;
converting the format of the first equivalent power grid data into a first data format to obtain second equivalent power grid data;
and obtaining third equivalent power grid data corresponding to the original power grid data according to the second equivalent power grid data and the equivalent control model parameters.
Preferably, the raw grid data comprises power flow data, grid data and transient data; wherein the transient data comprises ontology model parameters of the generator and control model parameters of the generator.
Preferably, the control model of the generator comprises an excitation system control model, a power system stabilizer control model and a speed regulation system control model.
Preferably, the types of the generator include a thermal generator, a hydro generator, a wind generator, and a nuclear power generator.
Preferably, the obtaining of the equivalent control model parameters corresponding to the equivalent generator according to the total rated capacity of the equivalent generator, the control model parameters corresponding to each generator, and the rated capacity specifically includes:
and obtaining equivalent control model parameters corresponding to the equivalent generators according to the total rated capacity of the equivalent generators, the control model parameters corresponding to each generator and the rated capacity, and obtaining the equivalent control model parameters corresponding to the equivalent generators by adopting a weighted average method.
Another embodiment of the present invention provides a dynamic equivalence device for an electric power system, the device including:
the original data acquisition module is used for acquiring original power grid data to be dynamically equivalent;
the first format conversion module is used for removing control model parameters of the generator from the original power grid data, then performing data format conversion, and converting the first data format of the original power grid data into a second data format which can be identified by software containing a dynamic equivalent program;
the dynamic equivalence module is used for carrying out dynamic equivalence on the power grid data subjected to format conversion to obtain first-equivalence power grid data;
the equivalent generator data acquisition module is used for acquiring equivalent generator data of an equivalent generator according to the first equivalent power grid data; wherein the equivalent generator data includes a total rated capacity of the equivalent generators, which generators the equivalent generators are consolidated by, and a type of each of the generators;
the control model parameter acquisition module is used for acquiring control model parameters and rated capacity corresponding to each generator from the original power grid data according to the equivalent generator data;
the equivalent control model parameter calculation module is used for obtaining equivalent control model parameters corresponding to the equivalent generators according to the total rated capacity of the equivalent generators, the control model parameters corresponding to each generator and the rated capacity;
the second format conversion module is used for converting the format of the first equivalent power grid data into a first data format to obtain second equivalent power grid data;
and the equivalent module is used for obtaining third equivalent power grid data corresponding to the original power grid data according to the second equivalent power grid data and the equivalent control model parameters.
Yet another embodiment of the present invention provides an apparatus using a dynamic equivalence method of an electric power system, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the dynamic equivalence method of the electric power system as described in any one of the above when executing the computer program.
Yet another embodiment of the present invention provides a computer-readable storage medium comprising a stored computer program, wherein the computer program, when executed, controls an apparatus in which the computer-readable storage medium is located to perform a method of dynamic equivalence of an electrical power system as set forth in any one of the above.
Compared with the prior art, the dynamic equivalence method, the device and the storage medium for the power system provided by the embodiment of the invention can carry out dynamic equivalence on the general model and data in the power system by utilizing the existing dynamic equivalence program, and the complicated model and data conversion is carried out through calculation, so that a simple and convenient method is provided for dynamic equivalence needed by some power system simulation software in the absence of the dynamic equivalence program.
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FIG. 1 is a schematic flow chart diagram illustrating an embodiment of a dynamic equivalence method for a power system provided by the present invention;
FIG. 2 is a schematic flow chart diagram illustrating another embodiment of a dynamic equivalence method for a power system provided by the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of a dynamic equivalent device of an electrical power system provided by the present invention;
FIG. 4 is a schematic diagram of an embodiment of an apparatus using a dynamic equivalence method for a power system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, it is a schematic flow chart of an embodiment of a dynamic equivalence method for a power system provided in the present invention, where the method includes steps S1 to S8:
s1, acquiring original power grid data to be dynamically equivalent;
s2, after the control model parameters of the generator are removed from the original power grid data, data format conversion is carried out, and a first data format of the original power grid data is converted into a second data format which can be identified by software containing a dynamic equivalent program;
s3, carrying out dynamic equivalence on the power grid data subjected to format conversion to obtain first-equivalence power grid data;
s4, obtaining equivalent generator data of an equivalent generator according to the first equivalent power grid data; wherein the equivalent generator data includes a total rated capacity of the equivalent generators, which generators the equivalent generators are consolidated by, and a type of each of the generators;
s5, acquiring control model parameters and rated capacity corresponding to each generator from the original power grid data according to the equivalent generator data;
s6, obtaining equivalent control model parameters corresponding to the equivalent generators according to the total rated capacity of the equivalent generators, the control model parameters corresponding to each generator and the rated capacity;
s7, converting the format of the first equivalent power grid data into a first data format to obtain second equivalent power grid data;
and S8, obtaining third equivalent power grid data corresponding to the original power grid data according to the second equivalent power grid data and the equivalent control model parameters.
Specifically, original power grid data to be dynamically equivalent are obtained. Generally, in power system simulation software, a power system can derive corresponding grid data, which includes various models in the power system and various parameters corresponding to the models.
Because the control models of the generator are different from one another and have larger differences among different simulation software, it is difficult for one simulation software to convert the control model of the other simulation software. Therefore, after the control model parameters of the generator are removed from the original power grid data, data format conversion is carried out, and the first data format of the original power grid data is converted into the second data format which can be identified by software containing the dynamic equivalent program. That is, only data commonly used in the power system is converted into a second data format recognizable by software including a dynamic equivalence program for dynamic equivalence. For example, the first data format is the PSS/E software format and the second data format is the DSP software format.
And performing dynamic equivalence on the power grid data after the format conversion to obtain first-equivalence power grid data, wherein the step is performed by utilizing a dynamic equivalence program in software containing the dynamic equivalence program.
Obtaining equivalent generator data of an equivalent generator according to the first equivalent power grid data; wherein the equivalent generator data comprises the total rated capacity of the equivalent generators, which generators the equivalent generators are merged by and the type of each generator. Although dynamic equivalence of the control model of the generator need not be performed, data related to the equivalent generator need to be recorded for subsequent calculation of the equivalent data of the control model of the generator.
And acquiring control model parameters and rated capacity corresponding to each generator from the original power grid data according to the equivalent generator data.
And obtaining equivalent control model parameters corresponding to the equivalent generators according to the total rated capacity of the equivalent generators, the control model parameters corresponding to each generator and the rated capacity. And obtaining the equivalent control model corresponding to the equivalent generator through the equivalent control model parameters.
After dynamic equivalence, the data format needs to be converted into the original data format, that is, the format of the first-equivalence power grid data is converted into the first data format, so as to obtain the second-equivalence power grid data.
And obtaining third equivalent power grid data corresponding to the original power grid data according to the second equivalent power grid data and the equivalent control model parameters. That is, the dynamic equivalence process is divided into two parts, wherein one part is to use a dynamic equivalence program in another software to carry out dynamic equivalence on general data in the power system; and the other part is to obtain equivalent control model parameters of the generator in the power system through equivalent calculation.
In order to clearly understand the implementation process of the present invention, the present invention further provides the process steps of another embodiment. Fig. 2 is a schematic flow chart of an embodiment of a dynamic equivalence method for an electric power system according to the present invention. As shown in fig. 2, the basic general data a1 in the simulation software a is converted into the format in the simulation software B to obtain the basic general data B1 in the simulation software B, the basic general data B2 after dynamic equivalence is obtained after dynamic equivalence is performed in the simulation software B, the format of the basic general data B2 is converted into the data format in the simulation software a to obtain the basic general data a2 which can be identified by the simulation software a, and the control models of the generators are selected and combined to obtain the complete equivalent electric power system data A3.
According to the dynamic equivalence method for the power system provided by the embodiment 1 of the invention, the model and the data which are commonly used in the power system can be subjected to dynamic equivalence by utilizing the existing dynamic equivalence program, and the complicated model and data conversion is converted through calculation, so that a simple and convenient method is provided for dynamic equivalence which needs to be carried out by some power system simulation software in the absence of the dynamic equivalence program.
As an improvement of the above scheme, the original grid data includes power flow data, grid data and transient data; wherein the transient data comprises ontology model parameters of the generator and control model parameters of the generator.
Specifically, the original power grid data comprises power flow data, sequence grid data and transient state data; wherein the transient data comprises ontology model parameters of the generator and control model parameters of the generator. The power flow data comprises related data of a generator, a load, a circuit, a transformer and the like, wherein the power flow data of the generator comprises rated power, actual active power, reactive power, terminal voltage and the like; the power flow data of the line comprises rated voltage, resistance, reactance, susceptance and the like; the power flow data of the two coils of transformers comprises voltage values at the two sides of high voltage and low voltage, and resistance and reactance values between the high voltage and the low voltage; the tide data of the three-winding transformer comprises voltage values of three sides of high voltage, medium voltage and low voltage, resistance and reactance values between high voltage and medium voltage and resistance and reactance values between low voltage and medium voltage. Load refers to the sum of the loads of all devices that are aggregated onto one bus.
The sequence grid data refers to sequence grid data in short-circuit current calculation, and comprises zero-sequence resistance and zero-sequence reactance of a line, and zero-sequence resistance and zero-sequence reactance of a transformer.
As an improvement of the scheme, the control model of the generator comprises an excitation system control model, a power system stabilizer control model and a speed regulating system control model.
Specifically, the control model of the generator includes an excitation System control model, a Power System Stabilizer (PSS) control model, and a speed control System control model. Generally, the control model of the generator mainly includes the above three types, wherein each type of control model includes a plurality of submodels, and the parameters in each submodel are different and the number of submodels is also large. Moreover, control models in different simulation software are different and have large differences, so that conversion is difficult.
As an improvement of the above scheme, the generator types include a thermal generator, a hydroelectric generator, a wind generator and a nuclear power generator.
Specifically, the types of the generator include a thermal generator, a hydro generator, a wind generator, and a nuclear power generator. The invention can identify the type of the generator according to the control model information such as the speed regulating system control model of the generator, and the like, so that the information such as the types of all generators, the rated capacity of the generators and the like can be recorded.
As an improvement of the above scheme, obtaining equivalent control model parameters corresponding to the equivalent generator according to the total rated capacity of the equivalent generator, the control model parameters corresponding to each generator, and the rated capacity specifically includes:
and obtaining equivalent control model parameters corresponding to the equivalent generators according to the total rated capacity of the equivalent generators, the control model parameters corresponding to each generator and the rated capacity, and obtaining the equivalent control model parameters corresponding to the equivalent generators by adopting a weighted average method.
Specifically, according to the total rated capacity of the equivalent generators, the control model parameters corresponding to each generator and the rated capacity, the equivalent control model parameters corresponding to the equivalent generators are obtained, and the equivalent control model parameters corresponding to the equivalent generators are obtained by adopting a weighted average method.
Determining the weight of each generator according to the ratio of the rated capacity of each generator to the total rated capacity of the equivalent generator, and obtaining the equivalent control model parameters corresponding to the equivalent generator according to the control model parameters corresponding to each generator.
It is noted that an equivalent machine is combined from a plurality of actual generators. The merged generators are all generators in the original grid data, and the merged equivalent generators are used to replace the generators. For example, #1, #3, #5 genset is merged as equivalent machine EQ #1, and #2, #4, #6 genset is merged as equivalent machine EQ # 2.
Referring to fig. 3, it is a schematic structural diagram of an embodiment of a dynamic equivalent device of an electric power system provided in the present invention, the device includes:
the original data acquisition module 11 is used for acquiring original power grid data to be dynamically equivalent;
the first format conversion module 12 is configured to perform data format conversion after removing control model parameters of the generator from the original power grid data, and convert a first data format of the original power grid data into a second data format that can be identified by software containing a dynamic equivalent program;
the dynamic equivalence module 13 is configured to perform dynamic equivalence on the format-converted power grid data to obtain first-equivalence power grid data;
the equivalent generator data acquisition module 14 is used for acquiring equivalent generator data of an equivalent generator according to the first equivalent power grid data; wherein the equivalent generator data includes a total rated capacity of the equivalent generators, which generators the equivalent generators are consolidated by, and a type of each of the generators;
a control model parameter obtaining module 15, configured to obtain, according to the equivalent generator data, a control model parameter and a rated capacity corresponding to each generator from the original power grid data;
the equivalent control model parameter calculation module 16 is used for obtaining equivalent control model parameters corresponding to the equivalent generators according to the total rated capacity of the equivalent generators, the control model parameters corresponding to each generator and the rated capacity;
the second format conversion module 17 is configured to convert the format of the first equivalent power grid data into a first data format to obtain second equivalent power grid data;
and the equivalence module 18 is configured to obtain third equivalent power grid data corresponding to the original power grid data according to the second equivalent power grid data and the equivalent control model parameters.
The dynamic equivalence device for the power system provided by the embodiment of the invention can realize all the processes of the dynamic equivalence method for the power system described in any embodiment, and the functions and the realized technical effects of each module and unit in the device are respectively the same as those of the dynamic equivalence method for the power system described in the embodiment and the realized technical effects, and are not repeated here.
Referring to fig. 4, the embodiment of the invention provides a device using a dynamic equivalence method of a power system, where the device using the dynamic equivalence method of the power system includes a processor 10, a memory 20, and a computer program stored in the memory 20 and configured to be executed by the processor 10, and the processor 10 implements the dynamic equivalence method of the power system according to any of the above embodiments when executing the computer program.
Illustratively, the computer program may be divided into one or more modules/units, which are stored in the memory 20 and executed by the processor 10 to implement the present invention. One or more of the modules/units may be a series of computer program instruction segments capable of performing specific functions, the instruction segments describing the execution of the computer program in a dynamic equivalence method for power systems. For example, the computer program may be divided into a raw data acquisition module, a first format conversion module, a dynamic equivalence module, an equivalence generator data acquisition module, a control model parameter acquisition module, an equivalence control model parameter calculation module, a second format conversion module, and an equivalence module, each module having the following specific functions:
the original data acquisition module 11 is used for acquiring original power grid data to be dynamically equivalent;
the first format conversion module 12 is configured to perform data format conversion after removing control model parameters of the generator from the original power grid data, and convert a first data format of the original power grid data into a second data format that can be identified by software containing a dynamic equivalent program;
the dynamic equivalence module 13 is configured to perform dynamic equivalence on the format-converted power grid data to obtain first-equivalence power grid data;
the equivalent generator data acquisition module 14 is used for acquiring equivalent generator data of an equivalent generator according to the first equivalent power grid data; wherein the equivalent generator data includes a total rated capacity of the equivalent generators, which generators the equivalent generators are consolidated by, and a type of each of the generators;
a control model parameter obtaining module 15, configured to obtain, according to the equivalent generator data, a control model parameter and a rated capacity corresponding to each generator from the original power grid data;
the equivalent control model parameter calculation module 16 is used for obtaining equivalent control model parameters corresponding to the equivalent generators according to the total rated capacity of the equivalent generators, the control model parameters corresponding to each generator and the rated capacity;
the second format conversion module 17 is configured to convert the format of the first equivalent power grid data into a first data format to obtain second equivalent power grid data;
and the equivalence module 18 is configured to obtain third equivalent power grid data corresponding to the original power grid data according to the second equivalent power grid data and the equivalent control model parameters.
The device using the dynamic equivalence method of the power system can be computing equipment such as a desktop computer, a notebook computer, a palm computer and a cloud server. The device using the dynamic equivalence method of the power system may include, but is not limited to, a processor, a memory. It will be understood by those skilled in the art that the schematic diagram 4 is merely an example of an apparatus using a dynamic equivalence method of a power system, and does not constitute a limitation on the apparatus using the dynamic equivalence method of a power system, and may include more or fewer components than those shown, or some components in combination, or different components, for example, the apparatus using the dynamic equivalence method of a power system may further include input-output devices, network access devices, buses, and the like.
The Processor 10 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor 10 may be any conventional processor or the like, the processor 10 being the control center of the apparatus using the dynamic equivalent method of the power system, various interfaces and lines connecting the various parts of the apparatus using the dynamic equivalent method of the power system as a whole.
The memory 20 may be used to store the computer programs and/or modules, and the processor 10 implements various functions of the apparatus using the dynamic equivalence method of the power system by running or executing the computer programs and/or modules stored in the memory 20 and calling data stored in the memory 20. The memory 20 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory 20 may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
Wherein the device-integrated module using the dynamic equivalence method of the power system may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium and can implement the steps of the embodiments of the method when the computer program is executed by a processor. The computer program includes computer program code, and the computer program code may be in a source code form, an object code form, an executable file or some intermediate form. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, in accordance with legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunications signals.
The embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium includes a stored computer program, where when the computer program runs, a device in which the computer-readable storage medium is located is controlled to execute the dynamic equivalence method of the power system according to any one of the above embodiments.
In summary, the dynamic equivalence method, the device and the storage medium for the power system provided by the embodiments of the present invention can perform dynamic equivalence on a general model and data in the power system by using an existing dynamic equivalence program, and perform conversion on a complex model and data conversion through calculation, thereby providing a simple and convenient method for dynamic equivalence required by some power system simulation software in the absence of a dynamic equivalence program, and solving the problem of dynamic equivalence of some power system simulation software in the absence of a special dynamic equivalence program.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (8)
1. A dynamic equivalence method for an electrical power system, comprising the steps of:
acquiring original power grid data to be dynamically equivalent;
after the control model parameters of the generator are removed from the original power grid data, data format conversion is carried out, and a first data format of the original power grid data is converted into a second data format which can be identified by software containing a dynamic equivalent program;
carrying out dynamic equivalence on the power grid data subjected to format conversion to obtain first-equivalence power grid data;
obtaining equivalent generator data of an equivalent generator according to the first equivalent power grid data; wherein the equivalent generator data includes a total rated capacity of the equivalent generators, which generators the equivalent generators are consolidated by, and a type of each of the generators;
acquiring control model parameters and rated capacity corresponding to each generator from the original power grid data according to the equivalent generator data;
obtaining equivalent control model parameters corresponding to the equivalent generators according to the total rated capacity of the equivalent generators, the control model parameters corresponding to each generator and the rated capacity;
converting the format of the first equivalent power grid data into a first data format to obtain second equivalent power grid data;
and obtaining third equivalent power grid data corresponding to the original power grid data according to the second equivalent power grid data and the equivalent control model parameters.
2. The dynamic equivalence method of a power system of claim 1, wherein the raw grid data comprises power flow data, grid sequence data, and transient data; wherein the transient data comprises ontology model parameters of the generator and control model parameters of the generator.
3. A dynamic equivalence method for a power system according to claim 1 wherein the control models for the generator comprise an excitation system control model, a power system stabilizer control model and a speed regulation system control model.
4. The dynamic equivalence method of a power system of claim 1, wherein the types of generators comprise thermal, hydro, wind, and nuclear power generators.
5. The dynamic equivalence method of a power system according to claim 1, wherein obtaining the equivalent control model parameters corresponding to the equivalent generators according to the total rated capacity of the equivalent generators, the control model parameters corresponding to each generator, and the rated capacity comprises:
and obtaining equivalent control model parameters corresponding to the equivalent generators according to the total rated capacity of the equivalent generators, the control model parameters corresponding to each generator and the rated capacity, and obtaining the equivalent control model parameters corresponding to the equivalent generators by adopting a weighted average method.
6. A dynamic equivalence device for an electrical power system, comprising:
the original data acquisition module is used for acquiring original power grid data to be dynamically equivalent;
the first format conversion module is used for removing control model parameters of the generator from the original power grid data, then performing data format conversion, and converting the first data format of the original power grid data into a second data format which can be identified by software containing a dynamic equivalent program;
the dynamic equivalence module is used for carrying out dynamic equivalence on the power grid data subjected to format conversion to obtain first-equivalence power grid data;
the equivalent generator data acquisition module is used for acquiring equivalent generator data of an equivalent generator according to the first equivalent power grid data; wherein the equivalent generator data includes a total rated capacity of the equivalent generators, which generators the equivalent generators are consolidated by, and a type of each of the generators;
the control model parameter acquisition module is used for acquiring control model parameters and rated capacity corresponding to each generator from the original power grid data according to the equivalent generator data;
the equivalent control model parameter calculation module is used for obtaining equivalent control model parameters corresponding to the equivalent generators according to the total rated capacity of the equivalent generators, the control model parameters corresponding to each generator and the rated capacity;
the second format conversion module is used for converting the format of the first equivalent power grid data into a first data format to obtain second equivalent power grid data;
and the equivalent module is used for obtaining third equivalent power grid data corresponding to the original power grid data according to the second equivalent power grid data and the equivalent control model parameters.
7. An apparatus for using a dynamic equivalence method of a power system, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the dynamic equivalence method of a power system as claimed in any one of claims 1 to 5 when executing the computer program.
8. A computer-readable storage medium comprising a stored computer program, wherein the computer program, when executed, controls an apparatus in which the computer-readable storage medium is located to perform a dynamic equivalence method for an electrical power system of any of claims 1-5.
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