CN114038266A - Flexible direct-current power distribution network simulation training system and data modeling method thereof - Google Patents
Flexible direct-current power distribution network simulation training system and data modeling method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of power simulation, and discloses a flexible direct-current power distribution network simulation training system and a data modeling method thereof. The simulation module, the simulation data pressing plate and the sampling plug-in are arranged in the virtual control protection host, so that the virtual control protection host generates corresponding converter station simulation data when receiving an operation instruction issued by the training master station, and switches the actual operation data of the converter station, which is acquired by the data source of the virtual control protection host from the sampling plug-in, into the converter station simulation data when the simulation data pressing plate is put into the virtual control protection host. The control protection host computer simulates the required data, and the simulation of the converter station can be realized without purchasing a simulation platform, so that the maintenance cost is reduced; by arranging the analog data pressing plate, the data source of the control protection host is switched, and the applicability of the system is improved.
Description
Technical Field
The invention relates to the technical field of power simulation, in particular to a flexible direct-current power distribution network simulation training system and a data modeling method thereof.
Background
The flexible direct current power transmission and distribution technology is gradually popularized and applied as an emerging power transmission and distribution technology. Due to the fact that the logic of the equipment structure, the wiring mode and the control protection system of the flexible direct current power distribution network is complex, the operation and maintenance speciality is very strong, and operation and maintenance personnel of the converter station of the flexible direct current power distribution network need to master high professional knowledge and operation experience. Thus, various simulation training systems have been developed.
The existing simulation training system for the flexible direct current power distribution network comprises dynamic simulation software such as RTDS (real-time digital simulation system), RT _ LAB (semi-real-time simulation system) and LAB _ VIEW (laboratory virtual instrument engineering platform). The RTDS (real-time digital simulation system) can provide a data source for a control protection system of the flexible direct-current power distribution network, but the RTDS has large investment, large floor area and high maintenance cost, and the provided simulation training content also provides some means for operation characteristics, control algorithms, fault analysis and the like of direct-current power transmission and distribution, but has no obvious effect on improving the management level of operation and maintenance personnel. Dynamic simulation software such as RT _ LAB (semi-real time simulation system) and LAB _ VIEW (laboratory virtual instrument engineering platform) focuses on the characteristic research of a direct current transmission and distribution system and the test analysis of control protection equipment, and although training of operation and control characteristics of a part of transmission and distribution systems can be performed, the dynamic simulation software is not suitable for skill training of operation and maintenance personnel.
Disclosure of Invention
The invention provides a flexible direct current power distribution network simulation training system and a data modeling method thereof, and solves the technical problems of high maintenance cost and poor applicability of the conventional flexible direct current power distribution network simulation training system.
The invention provides a data modeling method of a flexible direct current power distribution network simulation training system, which comprises the following steps:
acquiring configuration data of a control protection host in a converter station of a flexible direct current power distribution network to be simulated;
according to the configuration data of the control protection host, a corresponding virtual control protection host is generated in a flexible direct-current power distribution network simulation training system in a simulation mode, and the virtual control protection host is connected with a training master station;
setting a simulation module on the virtual control protection host, wherein the simulation module enables the virtual control protection host to generate corresponding converter station simulation data according to an operation instruction when the virtual control protection host receives the operation instruction issued by the training master station;
and arranging an analog data pressing plate and a sampling plug-in the virtual control protection host machine, so that when the analog data pressing plate is put in, a data source of the virtual control protection host machine comes from the converter station analog data, and when the analog data pressing plate is withdrawn, the data source of the virtual control protection host machine comes from the converter station actual operation data acquired by the sampling plug-in.
According to a manner that can be realized by the first aspect of the present invention, the generating of the corresponding converter station simulation data according to the operation instruction comprises:
and when the virtual control protection host sends a control signal to the corresponding converter station equipment according to the operation instruction, generating state simulation information of the converter station equipment corresponding to the control signal.
According to a manner that can be realized by the first aspect of the present invention, the generating the corresponding converter station simulation data according to the operation instruction further includes:
and for the switching value with the signal return, the virtual control protection host puts the corresponding switching value analog signal into a corresponding state according to the current running state of the converter station.
According to an enabling aspect of the first aspect of the invention, the method further comprises:
and setting a display module in the virtual control protection host machine, so that the virtual control protection host machine displays the data corresponding to the data source through the display module.
According to an enabling aspect of the first aspect of the invention, the method further comprises:
and a communication module connected with the training master station is arranged in the virtual control protection host machine, so that the virtual control protection host machine sends the data corresponding to the data source to the training master station through the communication module.
The invention provides a flexible direct current power distribution network simulation training system in a second aspect, which comprises a training master station and a virtual control protection host machine which are connected, wherein the virtual control protection host machine carries out simulation generation according to configuration data of a control protection host machine in a converter station of the flexible direct current power distribution network to be simulated; the virtual control protection host includes:
the simulation module is used for generating corresponding converter station simulation data according to the operation instruction when the operation instruction sent by the training master station is received;
the sampling plug-in is used for acquiring actual operation data of the converter station;
and the simulation data pressing plate is used for switching the data source of the virtual control protection host from the actual operation data of the converter station into the simulation data of the converter station.
According to an implementable manner of the second aspect of the invention, the simulation module comprises a first simulation unit for:
and generating state simulation information of the converter station equipment corresponding to the control signal when the control signal is sent to the corresponding converter station equipment according to the operation instruction.
According to an implementable manner of the second aspect of the invention, the simulation module further comprises a second simulation unit for:
and for the switching value with the signal return, corresponding switching value analog signals are placed in corresponding states according to the current running state of the converter station.
According to an implementable manner of the second aspect of the present invention, the virtual control protection host further comprises:
and the display module is used for displaying the data corresponding to the data source.
According to an implementable manner of the second aspect of the present invention, the virtual control protection host further comprises:
and the communication module is connected with the training master station and is used for sending the data corresponding to the data source to the training master station.
According to the technical scheme, the invention has the following advantages:
according to the method, a corresponding virtual control protection host is generated in a flexible direct current power distribution network simulation training system in a simulation mode according to actual configuration data of the control protection host, the virtual control protection host is connected with a training master station, and a simulation module is arranged on the virtual control protection host, so that when the virtual control protection host receives an operation instruction sent by the training master station, corresponding converter station simulation data are generated according to the operation instruction; the invention also sets an analog data pressing plate and a sampling plug-in the virtual control protection host machine, so that when the analog data pressing plate is put in, the data source of the virtual control protection host machine comes from the analog data of the converter station, and when the analog data pressing plate is withdrawn, the data source of the virtual control protection host machine comes from the actual operation data of the converter station acquired by the sampling plug-in; the required data are simulated in the control protection host, so that the wiring requirement among devices is reduced, simulation of the converter station can be realized without purchasing simulation platforms like an RTDS (real time digital simulation system) and the like, the investment of a simulation training system is reduced, and the maintenance cost is reduced; by arranging the analog data pressing plate, the data source of the control protection host is switched (the actual equipment is switched into analog data), the analog simulation of the operation of the converter station, the analog simulation of the operation characteristic and the analog simulation of the fault can be realized without modifying the algorithm of the control protection host, the study of the operation maintenance personnel of the converter station on the characteristics of the converter station and the maintenance of the equipment are facilitated, the operation management level is improved, and the technical problems of high maintenance cost and poor applicability of the existing simulation training system for the flexible direct current power distribution network are integrally solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 these drawings without inventive exercise.
Fig. 1 is a flowchart of a data modeling method of a flexible dc power distribution network simulation training system according to an alternative embodiment of the present invention;
fig. 2 is a block diagram of a virtual control protection host according to an alternative embodiment of the present invention.
Description of the drawings:
1-an analog module; 2-sampling plug-in; 3-simulate data platen.
Detailed Description
The embodiment of the invention provides a flexible direct current power distribution network simulation training system and a data modeling method thereof, which are used for solving the technical problems of high maintenance cost and poor applicability of the conventional flexible direct current power distribution network simulation training system.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below 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, fig. 1 is a flowchart illustrating a data modeling method of a flexible direct current power distribution network simulation training system according to an embodiment of the present invention.
The invention provides a data modeling method of a flexible direct current power distribution network simulation training system, which comprises the steps of S1-S4.
And step S1, acquiring configuration data of a control protection host in the flexible direct current power distribution network converter station to be simulated.
In order to deploy a control protection host for a flexible direct current power distribution network simulation training system in a simulation training laboratory, configuration data of the control protection host in a converter station of the flexible direct current power distribution network to be simulated needs to be acquired. The configuration data comprises configuration parameters and a control program, wherein the configuration parameters comprise the model number and the quantity information of the control protection host, and the control program comprises an algorithm used when the control protection host processes data.
And S2, according to the configuration data of the control protection host, generating a corresponding virtual control protection host in a flexible direct current power distribution network simulation training system in a simulation manner, and connecting the virtual control protection host to a training master station.
The embodiment of the invention generates the corresponding virtual control protection host based on the configuration data, so that the generated virtual control protection host can have the characteristic of being consistent with the control protection host applied to the actual field.
And step S3, setting a simulation module in the virtual control protection host, wherein the simulation module enables the virtual control protection host to generate corresponding converter station simulation data according to the operation instruction when receiving the operation instruction issued by the training master station.
In one implementation manner, the generating corresponding converter station simulation data according to the operation instruction includes:
and when the virtual control protection host sends a control signal to the corresponding converter station equipment according to the operation instruction, generating state simulation information of the converter station equipment corresponding to the control signal.
For example, when the virtual control protection host sends a closing signal to a certain breaker according to an operation instruction, a corresponding analog position signal that the breaker has been closed is generated in the virtual control protection host.
Further, if the operation instruction includes a control instruction for the virtual control protection host, the virtual control protection host may also generate a corresponding control parameter value according to the control instruction. For example, the control command is to control the virtual control protection host to be in a power control mode, where the active power target value is Ptarget, and the virtual control protection host generates a corresponding actual power analog value Psim, where the power analog value Psim is equal to the value of Ptarget.
In one implementation manner, the generating corresponding converter station simulation data according to the operation instruction further includes:
and for the switching value with the signal return, the virtual control protection host puts the corresponding switching value analog signal into a corresponding state according to the current running state of the converter station.
Wherein, the switching value that virtual control protection host computer controlled includes: the opening and closing positions of the circuit breakers and the isolating switches and the running state information of the control protection device.
The operation of the embodiment is directed to the case that the virtual control protection host does not have the simulation data, but has the specific data to return. For example, after the virtual control protection host executes the operation command, some devices of the converter station may feed back corresponding state information, and at this time, the virtual control protection host may place corresponding switching value analog signals in corresponding states according to the state information.
Step S4, setting an analog data pressing plate and a sampling plug-in the virtual control protection host, so that when the analog data pressing plate is switched in, the data source of the virtual control protection host comes from the converter station analog data, and when the analog data pressing plate is switched out, the data source of the virtual control protection host comes from the converter station actual operation data acquired by the sampling plug-in.
The sampling plug-in comprises an analog quantity sampling plug-in, an open light quantity sampling plug-in and a communication plug-in. The data collected by the analog quantity sampling plug-in is analog quantity, and comprises data such as voltage, current and the like. The data collected by the light opening amount sampling plug-in is information such as the switch-on and switch-off positions of the isolation switch and the circuit breaker. The data collected by the communication plug-in is input data of other systems, such as data information of active power instructions from the stability control device.
The analog data pressure plate is a soft pressure plate arranged in the algorithm of the control protection host machine and used for selecting an input data source. In practical engineering application, the algorithm input data of the control protection host generally come from analog quantity sampling plug-in units, switching quantity sampling plug-in units and data information of other control systems acquired in a communication mode. In the application, the analog data pressing plate is arranged, when the analog data pressing plate is put into use, data used in the algorithm of the control protection host are different from actual engineering application, and the data are not collected by the sampling plug-in, but the analog data generated by the control protection host.
For example, in practical applications, the dc voltage value and the dc current value used by the control and protection host are both data collected by the sampling plug-in. In this application, if an analog data pressure plate is used, the values of the direct current voltage and the direct current used by the control and protection host in calculation are data generated by the control and protection host, but not data collected by the sampling plug-in.
In the embodiment of the invention, the method for simulating the required data in the control protection host is adopted, the simulation of the converter station can be realized without purchasing simulation platforms like RTDS (real time digital system) and the like, the investment of a simulation training system is reduced, the maintenance cost is reduced, the original algorithm of the control protection host is not required to be modified, an additional hardware system is not required to be developed, software and hardware which are consistent with an actual operation system are completely adopted, the research and development workload is reduced, and the operation state of the converter station can be simulated one by one.
In one implementation, the method further comprises:
and setting a display module in the virtual control protection host machine, so that the virtual control protection host machine displays the data corresponding to the data source through the display module.
In one implementation, the method further comprises:
and a communication module connected with the training master station is arranged in the virtual control protection host machine, so that the virtual control protection host machine sends the data corresponding to the data source to the training master station through the communication module.
The data corresponding to the data source comprises the data source and data generated after the data source is processed through a built-in algorithm.
The built-in algorithm is an existing algorithm configured in the actual control protection host, and the algorithm is not limited in the embodiment of the invention.
Preferably, the communication module communicates with the training main station through IEC61850 protocol. The training master station is provided with a human-computer interaction interface for displaying data transmitted by the virtual control protection host.
And the data corresponding to the operation state of the converter station is presented by training the master station, so that the familiarity and the management of operation maintenance personnel on the system are facilitated.
In specific implementation, the method of the embodiment of the present invention is described in detail by taking the implementation of simulation of the converter station operating state in the flexible dc power distribution network as an example.
The operation states of the converter station comprise a grounding state, a shutdown state, a standby state, a locking state, an unlocking state and an operation state. The respective operating states are defined as follows:
a grounding state: all the grounding knife switches are in the switch-on position, all the disconnecting switches are in the switch-off position, and all the circuit breakers are in the switch-off position;
the shutdown state: all the grounding knife switches are in the switch-off position, all the disconnecting switches are in the switch-off position, and all the circuit breakers are in the switch-off position;
standby state: all the grounding disconnecting switches are in the disconnecting position, all the disconnecting switches are in the switching-on position, and the network side circuit breaker is in the disconnecting position;
a locking state: the circuit breaker on the inlet side of the converter transformer is in a switching-on position, and the converter valve is in a locking state;
an unlocking state: the converter valve is in an unlocked state;
the operation state is as follows: the converter valve is in an unlocked state, the circuit breaker on the inlet side of the converter transformer is in a switch-on position, and the direct current voltage is greater than a certain value, wherein the certain value is related to the voltage grade of the converter station, generally 0.925Ud of the voltage grade of the converter station, and the Ud refers to the direct current rated voltage grade of the converter station.
After the virtual control protection host is set according to the method of the above embodiment, when the virtual control protection host receives an operation instruction to be placed in an operating state, the virtual control protection host automatically generates corresponding analog signals, which are respectively as follows:
setting an unlocking state analog signal of the converter valve to be 1, and setting a locking state analog signal of the converter valve to be 0;
setting a switching-on position analog signal of a converter transformer inlet side circuit breaker as 1, and setting a switching-off position analog signal of the converter transformer inlet side circuit breaker as 0;
setting switch-off position analog signals of all grounding switches to be 1, and setting switch-on position analog signals of all grounding switches to be 0;
setting the switch-on position analog signal of the isolating switch as 1, and setting the switch-off position analog signal of the isolating switch as 0;
setting an analog signal of the system voltage as a corresponding rated voltage of the converter station;
the analog signal of the dc voltage is set to 0.925 Ud.
After the analog data pressing plate is put into the virtual control protection host, the data source required by the virtual control protection host comes from the analog data generated by the virtual control protection host, the generated set of analog data is matched with the data required by the running state, and at the moment, the converter station can be seen to be in the running state on the corresponding interface.
The invention also provides a flexible direct current power distribution network simulation training system which comprises a training main station and a virtual control protection host which are connected, wherein the virtual control protection host carries out simulation generation according to the configuration data of the control protection host in the flexible direct current power distribution network converter station to be simulated.
Referring to fig. 2, fig. 2 is a block diagram illustrating a virtual control protection host according to an embodiment of the present invention.
The virtual control protection host of this embodiment includes:
the simulation module 1 is used for generating corresponding converter station simulation data according to the operation instruction when receiving the operation instruction issued by the training master station;
the sampling plug-in 2 is used for acquiring actual operation data of the converter station;
and the analog data pressing plate 3 is used for switching the data source of the virtual control protection host from the actual operation data of the converter station into the analog data of the converter station.
In an implementable manner, the simulation module 1 comprises a first simulation unit for:
and generating state simulation information of the converter station equipment corresponding to the control signal when the control signal is sent to the corresponding converter station equipment according to the operation instruction.
In an implementable manner, the simulation module 1 further comprises a second simulation unit for:
and for the switching value with the signal return, corresponding switching value analog signals are placed in corresponding states according to the current running state of the converter station.
In one implementation, the virtual control protection host further includes:
and the display module is used for displaying the data corresponding to the data source.
In one implementation, the virtual control protection host further includes:
and the communication module is connected with the training master station and is used for sending the data corresponding to the data source to the training master station.
In the embodiment of the invention, the required data is simulated in the control protection host, so that the wiring requirement among devices is reduced, the simulation of the converter station can be realized without purchasing simulation platforms such as RTDS (real time digital system) and the like, the investment of a simulation training system is reduced, and the maintenance cost is reduced; by arranging the analog data pressing plate, the data source of the control protection host is switched (the actual equipment is switched into analog data), and the analog simulation of the operation of the converter station, the analog simulation of the operating characteristic and the analog simulation of the fault can be realized without modifying the algorithm of the control protection host, so that the study of the operating maintenance personnel of the converter station on the characteristics of the converter station and the maintenance of the equipment are facilitated, and the operation management level is improved.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A data modeling method of a flexible direct current power distribution network simulation training system is characterized by comprising the following steps:
acquiring configuration data of a control protection host in a converter station of a flexible direct current power distribution network to be simulated;
according to the configuration data of the control protection host, a corresponding virtual control protection host is generated in a flexible direct-current power distribution network simulation training system in a simulation mode, and the virtual control protection host is connected with a training master station;
setting a simulation module on the virtual control protection host, wherein the simulation module enables the virtual control protection host to generate corresponding converter station simulation data according to an operation instruction when the virtual control protection host receives the operation instruction issued by the training master station;
and arranging an analog data pressing plate and a sampling plug-in the virtual control protection host machine, so that when the analog data pressing plate is put in, a data source of the virtual control protection host machine comes from the converter station analog data, and when the analog data pressing plate is withdrawn, the data source of the virtual control protection host machine comes from the converter station actual operation data acquired by the sampling plug-in.
2. The data modeling method of the flexible direct current power distribution network simulation training system according to claim 1, wherein the generating of the corresponding converter station simulation data according to the operation instruction comprises:
and when the virtual control protection host sends a control signal to the corresponding converter station equipment according to the operation instruction, generating state simulation information of the converter station equipment corresponding to the control signal.
3. The data modeling method of the flexible direct current power distribution network simulation training system according to claim 2, wherein the generating of the corresponding converter station simulation data according to the operation instruction further comprises:
and for the switching value with the signal return, the virtual control protection host puts the corresponding switching value analog signal into a corresponding state according to the current running state of the converter station.
4. The data modeling method of the flexible direct current power distribution network simulation training system according to claim 1, wherein the method further comprises:
and setting a display module in the virtual control protection host machine, so that the virtual control protection host machine displays the data corresponding to the data source through the display module.
5. The data modeling method of the flexible direct current power distribution network simulation training system according to claim 1, wherein the method further comprises:
and a communication module connected with the training master station is arranged in the virtual control protection host machine, so that the virtual control protection host machine sends the data corresponding to the data source to the training master station through the communication module.
6. A flexible direct current distribution network simulation training system is characterized by comprising a training main station and a virtual control protection host which are connected, wherein the virtual control protection host carries out simulation generation according to configuration data of a control protection host in a converter station of a flexible direct current distribution network to be simulated; the virtual control protection host includes:
the simulation module is used for generating corresponding converter station simulation data according to the operation instruction when the operation instruction sent by the training master station is received;
the sampling plug-in is used for acquiring actual operation data of the converter station;
and the simulation data pressing plate is used for switching the data source of the virtual control protection host from the actual operation data of the converter station into the simulation data of the converter station.
7. The simulation training system for the flexible direct current distribution network according to claim 6, wherein the simulation module comprises a first simulation unit, and the first simulation unit is used for:
and generating state simulation information of the converter station equipment corresponding to the control signal when the control signal is sent to the corresponding converter station equipment according to the operation instruction.
8. The simulation training system for the flexible direct current distribution network according to claim 7, wherein the simulation module further comprises a second simulation unit, and the second simulation unit is configured to:
and for the switching value with the signal return, corresponding switching value analog signals are placed in corresponding states according to the current running state of the converter station.
9. The flexible direct current distribution network simulation training system according to claim 6, wherein the virtual control protection host further comprises:
and the display module is used for displaying the data corresponding to the data source.
10. The data modeling method of the flexible direct current power distribution network simulation training system according to claim 6, wherein the virtual control protection host further comprises:
and the communication module is connected with the training master station and is used for sending the data corresponding to the data source to the training master station.
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