CN110879543B - Real-time hybrid simulation platform of electric power system - Google Patents
Real-time hybrid simulation platform of electric power system Download PDFInfo
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Abstract
The invention provides a real-time hybrid simulation platform of a power system, which relates to the technical field of data processing and comprises the following steps: the system comprises an SCADA monitoring system, a parallel computer and a simulation model, wherein the SCADA monitoring system is used for monitoring the power system to be simulated in real time to obtain real-time monitoring data of the power system to be simulated; the parallel computer is used for carrying out data processing on the real-time monitoring data to obtain simulation data and storing the simulation data to a target database; the simulation model is used for calling the simulation data stored in the target database, performing electromechanical simulation and/or electromagnetic simulation on the electric power system by using the simulation data stored in the target database to obtain a simulation result, and solving the technical problem that the real-time hybrid simulation cannot be performed on the complex electric power system in the prior art.
Description
Technical Field
The invention relates to the technical field of data processing, in particular to a real-time hybrid simulation platform of an electric power system.
Background
The difference between the online simulation and the offline simulation of the power system is that the sources of simulation data are different, and the offline simulation data are various manually-made operation mode data and are simulated based on expected operation conditions; on-line simulation is carried out, on-line operation data of the dispatching automation system is used, simulation is carried out based on actual operation conditions, the on-line simulation can be used for analyzing expected accidents, and faults with potential safety hazards are screened out by scanning and analyzing a large number of expected accidents; the method can also be used for early warning and processing based on the super real-time simulation, for example, when the operation mode of the system is changed or faults occur, the future operation condition of the system can be rapidly known by means of the super real-time simulation, so that control measures can be taken in advance to avoid the occurrence and expansion of accidents.
However, it is difficult to perform online hybrid simulation of a complex power system in the prior art.
No effective solution has been proposed to the above problems.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a real-time hybrid simulation platform for an electric power system, so as to alleviate the technical problem that the real-time hybrid simulation cannot be performed on a complex electric power system in the prior art.
In a first aspect, an embodiment of the present invention provides a real-time hybrid simulation platform for an electric power system, including: the system comprises an SCADA monitoring system, a parallel computer and a simulation model, wherein the SCADA monitoring system is used for monitoring the power system to be simulated in real time to obtain real-time monitoring data of the power system to be simulated; the parallel computer is used for carrying out data processing on the real-time monitoring data to obtain simulation data and storing the simulation data to a target database; the simulation model is used for calling the simulation data stored in the target database and performing electromechanical simulation and/or electromagnetic simulation on the power system by using the simulation data stored in the target database to obtain a simulation result.
Further, the simulation model is further configured to send the simulation result to the parallel computer, so that the parallel computer stores the simulation result.
Further, the parallel computer is further configured to send the simulation result to the SCADA monitoring system, so that the SCADA monitoring system analyzes the simulation result.
Further, the target database includes at least one of: an electromechanical device database, an electromagnetic device database; the simulation model comprises: electromechanical simulation models and electromagnetic simulation models.
Further, the power system to be simulated comprises one or more nodes; the parallel computer includes: the data classification device is used for classifying the real-time monitoring data according to the node names of the nodes to obtain the real-time monitoring data of the nodes; the data correction device is used for determining abnormal data in the real-time monitoring data of the node and correcting the abnormal data to obtain simulation data of the node; the data processing device is configured to determine a node type of the node, determine a data type of simulation data of the node according to the node type, and send the simulation data of the node to a corresponding database according to the data type, where the data type includes at least one of: electromechanical device data, electromagnetic device data.
Further, the electromechanical simulation model is configured to, in a case that a time sequence of the electromechanical simulation model is consistent with a time sequence of the electromechanical device database, call simulation data stored in the electromechanical device database, and perform electromechanical simulation on the simulation data stored in the electromechanical device database.
Further, the simulation data stored in the mechatronic device database includes at least one of: generator parameters, power load parameters, power reactive compensation parameters and alternating current line parameters.
Further, the electromagnetic simulation model is configured to call the simulation data stored in the electromagnetic device database and perform electromagnetic simulation on the simulation data stored in the electromagnetic device database when the time sequence of the electromagnetic simulation model is consistent with the time sequence of the electromagnetic device database.
Further, the simulation data stored in the electromagnetic device database includes at least one of: transformer parameters, converter parameters, direct current line parameters, smoothing reactor parameters, filter parameters, and system parameters of the direct current control system.
Further, the data interaction interface is used for performing data interaction on the simulation process of the electromechanical simulation model and the simulation process of the electromagnetic simulation model, so that the electromechanical and electromagnetic hybrid simulation is performed on the simulation model.
In the embodiment of the invention, firstly, the SCADA monitoring system carries out real-time monitoring on the power system to be simulated to obtain real-time monitoring data of the power system to be simulated; then, the parallel computer performs data processing on the real-time monitoring data to obtain simulation data, and stores the simulation data to a target database; and finally, the simulation model calls the simulation data stored in the target database, and the simulation data stored in the target database is utilized to perform electromechanical simulation and/or electromagnetic simulation on the power system to obtain a simulation result.
In the embodiment of the invention, the SCADA monitoring system is connected with the parallel computer in real time, so that the parallel computer can acquire real-time monitoring data of the power system to be simulated in real time, the parallel computer performs data processing on the real-time monitoring data to obtain simulation data which can be used for performing real-time hybrid simulation, and the simulation model performs real-time hybrid simulation on the power system to be simulated by using the simulation data, so that the aim of simulating the power system to be simulated is fulfilled, the technical problem that the complex power system cannot be subjected to real-time hybrid simulation in the prior art is solved, and the technical effect of performing real-time hybrid simulation on the complex power system is realized.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
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 some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a real-time hybrid simulation platform of an electrical power system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another real-time hybrid simulation platform for an electrical power system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another real-time hybrid simulation platform for an electrical power system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a simulation model according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. 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.
The first embodiment is as follows:
according to an embodiment of the present invention, an embodiment of a real-time hybrid simulation platform of an electrical power system is provided, and fig. 1 is a schematic diagram of a real-time hybrid simulation platform of an electrical power system according to an embodiment of the present invention, as shown in fig. 1, the platform includes: a SCADA monitoring system 10, a parallel computer 20 and a simulation model 30.
The SCADA monitoring system 10 is used for monitoring the power system to be simulated in real time to obtain real-time monitoring data of the power system to be simulated;
specifically, the scada (supervisory Control And Data acquisition) monitoring system is a basis And a core of the power grid dispatching automation system, is responsible for collecting And processing various real-time And non-real-time Data in the operation of the power system, And is a main Data source of various application software of the power grid dispatching center. The operation simulation data of the power system comprises a large amount of equipment information of power plants, transformer substations, transmission lines, converter stations and the like in the power system, and the SCADA monitoring system transmits the mainly acquired information including the operation states of generators and transformers in the power grid, the generation output and load change conditions, the network structure and power flow distribution conditions, the dynamic change of the power grid, the accident conditions and the like to the parallel computer.
The parallel computer 20 is configured to perform data processing on the real-time monitoring data to obtain simulation data, and store the simulation data in a target database;
specifically, the target database includes at least one of: electromechanical device database, electromagnetic device database.
The simulation model 30 is configured to call the simulation data stored in the target database, and perform electromechanical simulation and/or electromagnetic simulation on the power system by using the simulation data stored in the target database to obtain a simulation result.
Specifically, the simulation result includes information such as power flow information of the power system to be simulated, a power system stable area, a power system small interference oscillation area, and a power system fault area.
Specifically, the simulation model includes: an electromechanical simulation model 31 and an electromagnetic simulation model 32.
In the embodiment of the invention, the SCADA monitoring system is connected with the parallel computer in real time, so that the parallel computer can acquire real-time monitoring data of the power system to be simulated in real time, the parallel computer performs data processing on the real-time monitoring data to obtain simulation data which can be used for performing real-time hybrid simulation, and the simulation model performs real-time hybrid simulation on the power system to be simulated by using the simulation data, so that the aim of simulating the power system to be simulated is fulfilled, the technical problem that the complex power system cannot be subjected to real-time hybrid simulation in the prior art is solved, and the technical effect of performing real-time hybrid simulation on the complex power system is realized.
It should be noted that the SCADA monitoring system is connected with the system parallel computer through an optical fiber, so that the data attenuation of the real-time monitoring data in the transmission process is reduced.
In the embodiment of the present invention, the simulation model is further configured to send the simulation result to the parallel computer, so that the parallel computer stores the simulation result.
And the parallel computer is also used for sending the simulation record to the SCADA monitoring system after the simulation model obtains the simulation result, so that the SCADA monitoring system analyzes the simulation result.
The simulation result is fed back to the SCADA monitoring system, so that the SCADA monitoring system applies the simulation result to the process of adjusting the power grid parameters by the power system automation software, and the scheduling maintenance worker finds and analyzes the stability problem in the power system according to the simulation result.
In the embodiment of the invention, the power system to be simulated comprises one or more nodes; as shown in fig. 2, the parallel computer 20 includes: data sorting means 21, data correction means 22 and data processing means 23.
The data classification device 21 is configured to classify the real-time monitoring data according to the node name of the node, so as to obtain the real-time monitoring data of the node;
the data correction device 22 is configured to determine abnormal data in the real-time monitoring data of the node, and correct the abnormal data to obtain simulation data of the node;
the data processing device 23 is configured to determine a node type of the node, determine a data type of simulation data of the node according to the node type, and send the simulation data of the node to a corresponding database according to the data type, where the data type includes at least one of: electromechanical device data, electromagnetic device data.
In the embodiment of the invention, the data classification module can classify the data to be monitored according to the simulation requirement by using the condition of node name or area name, and select the information (namely the real-time monitoring data of the node) such as the running state, the power generation output and load change condition, the network structure and the power flow distribution condition of the node or area.
The network model data structure of the node or the region can be constructed through real-time monitoring data of the node, and it should be noted that the network model data structure is consistent with a data model built by an electromechanical program and a data model built by an electromagnetic program.
Because data abnormal caused by faults of the acquisition device can be generated in the operation of the power system to form data dead spots (namely abnormal data) and cause abnormal simulation results, the abnormal data is judged to be caused by the acquisition device or the faults of the main equipment through the action marks of the control equipment of the SCADA monitoring system, the monitoring data formed by the faults of the main equipment can be continuously input into the node database, and the data correction device can correct and process the abnormal data to ensure the accuracy of the simulation data.
The node type of a node in a power system is typically determined according to the type of power transmission system used by the node, the type of power transmission system including: ac transmission systems and dc transmission systems, and therefore, the node types include: an AC transmission system node and a DC transmission system node.
Therefore, the data processing apparatus first determines the node type of the node, and if the node is an ac power transmission system node, the simulation data of the node includes: model parameters such as a motor, a transformer, a load, reactive compensation, an alternating current line and the like, and then the data processing device sends the simulation data of the node to the electromechanical equipment database so that the electromechanical equipment database stores the simulation data of the node.
If the node is a direct current transmission system node, the simulation data of the node comprises: model parameters such as a current converter, a direct current line, a smoothing reactor, a filter, a direct current control system and the like, and then the data processing device sends the simulation data of the node to the electromechanical device database so that the electromechanical device database stores the simulation data of the node.
In the embodiment of the present invention, as shown in fig. 3, the simulation model 30 includes: an electromechanical simulation model 31 and an electromagnetic simulation model 32.
The electromechanical simulation model 31 is configured to, in a case where a time sequence of the electromechanical simulation model is consistent with a time sequence of the electromechanical device database, call simulation data stored in the electromechanical device database, and perform electromechanical simulation on the simulation data stored in the electromechanical device database.
The electromagnetic simulation model 32 is configured to, in a case where a time sequence of the electromagnetic simulation model is consistent with a time sequence of the electromagnetic device database, call simulation data stored in the electromagnetic device database, and perform electromagnetic simulation on the simulation data stored in the electromagnetic device database.
In the embodiment of the invention, after the electromechanical simulation model acquires the starting instruction sent by the parallel computer, the electromechanical simulation model is initialized, whether interface information of the electromechanical device database meets an input condition or not is judged, and a boundary condition model between the electromechanical device database and the electromechanical simulation model is adjusted.
The electromechanical simulation model synchronizes the electromechanical transient data model to the electromechanical simulation model program, and the simulation of the online alternating current power grid is realized according to the simulation data converted in real time.
When the electromagnetic simulation model acquires a starting instruction sent by the parallel computer, the electromagnetic simulation model is initialized, whether interface information of the electromagnetic equipment database meets input conditions or not is judged, a boundary condition model between the electromagnetic equipment database and the electromagnetic simulation model is adjusted, and when the electromagnetic equipment database is completely built and the time sequence of the electromagnetic simulation model is adjusted to be consistent with the time sequence of the electromagnetic equipment database, data of the electromagnetic equipment database are synchronized to the electromagnetic simulation model (namely the electromagnetic simulation model calls simulation data stored in the electromagnetic equipment database).
The electromagnetic simulation model synchronizes the electromagnetic transient data model to the electromagnetic simulation model program, and the simulation of the online direct current power grid is realized according to the simulation data converted in real time.
In the embodiment of the present invention, as shown in fig. 4, the simulation model further includes: a data interaction interface 33, which is respectively connected with the electromechanical simulation model and the electromagnetic simulation model;
the data interaction interface is used for carrying out data interaction on the simulation process of the electromechanical simulation model and the simulation process of the electromagnetic simulation model so as to enable the simulation model to carry out electromechanical and electromagnetic hybrid simulation.
In the embodiment of the invention, the program of the electromechanical simulation model and the program of the electromagnetic simulation model carry out data synchronization through the data interaction interface, thereby realizing the online hybrid electromechanical electromagnetic simulation of the power system to be simulated.
It should be noted that the parallel computer may also perform transient simulation through simulation data, and the parallel computer further includes: digital computer, intelligent interface card and real-time digital simulation system.
The digital computer side carries out electromechanical transient simulation, the real-time digital simulation system side carries out electromagnetic transient simulation, the electromagnetic transient simulation and the electromagnetic transient simulation are synchronously carried out in real time, an interface is carried out at a fixed moment, boundary equivalent parameters are exchanged, and the digital computer is a computer for running an electromechanical transient simulation program of the power system with (ultra) real-time simulation capability.
The fast electromechanical transient simulation program used in the application has high calculation efficiency, and the personal computing server of the Intel P4 carries out 8 times of super real-time on the 2200-node system simulation. The intelligent interface card realizes the transmission and processing of electromagnetic and electromechanical interface data, and comprises a digital signal processor for data transmission control, interactive sequence control, electromechanical transient data filtering calculation and the like. The intelligent interface card exchanges data with the computer through a first-in first-out memory and exchanges data with a real-time digital simulation system through A/D and D/A, and the intelligent interface card has high expansion capability (comprising more than 32 x 8A/D channels and more than 32 x 8D/A channels). The real-time digital simulation system is used for completing the electromagnetic transient real-time simulation of important equipment and local systems, and is provided with a certain analog input and output channel so as to exchange data with an interface card.
In a new generation of real-time digital simulation system, analog input/output can be expanded by a GTAI/GTAO card. The real-time digital simulation system also sends a synchronous pulse signal through each set interaction step length of the GTAO or GTDO card so as to maintain the synchronism of the simulation at two sides. The real-time digital simulation system side needs to establish an interface equivalent model for a power grid at the electromechanical side, and implement filtering, interface electric quantity solving, form conversion, prediction extrapolation and the like. User-defined components are employed herein to accomplish this functionality. The user-defined assembly can realize a time-varying Norton equivalent circuit, a time-varying current source, a time-varying series-parallel branch and the like. The 1 gigabit processor card can complete 700-800 times of multiplication and division operations and 1900-2000 times of if … else … logic judgment and the like within a step length of 50 mu s, and the operation capability can meet the requirements of hybrid simulation on data processing and estimation correction scheme customization of a direct current system boundary interface. And realizing hybrid simulation of the real-time digital simulation system and a computer interface running an electromechanical transient simulation program. The simulation takes the time scale of the real-time digital simulation system as the reference, and the real-time digital simulation system sends a synchronous pulse signal to the computer at the beginning of each interactive step length, so that the independent calculation of two sides is ensured, and the time scale of the simulation at the two sides is kept consistent at the updating time of each interactive data.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and 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 of devices or units through some communication interfaces, 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.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A real-time hybrid simulation platform for an electrical power system, comprising: a SCADA monitoring system, a parallel computer and a simulation model, wherein,
the SCADA monitoring system is used for monitoring the power system to be simulated in real time to obtain real-time monitoring data of the power system to be simulated;
the parallel computer is used for carrying out data processing on the real-time monitoring data to obtain simulation data and storing the simulation data to a target database;
the simulation model is used for calling the simulation data stored in the target database and performing electromechanical simulation and/or electromagnetic simulation on the power system by using the simulation data stored in the target database to obtain a simulation result;
wherein the power system to be simulated comprises one or more nodes; the parallel computer includes: a data sorting device, a data correcting device and a data processing device, wherein,
the data classification device is used for classifying the real-time monitoring data according to the node name of the node to obtain the real-time monitoring data of the node;
the data correction device is used for determining abnormal data in the real-time monitoring data of the node and correcting the abnormal data to obtain simulation data of the node;
the data processing device is configured to determine a node type of the node, determine a data type of simulation data of the node according to the node type, and send the simulation data of the node to a corresponding database according to the data type, where the data type includes at least one of: electromechanical device data, electromagnetic device data.
2. The platform of claim 1,
and the simulation model is also used for sending the simulation result to the parallel computer so as to enable the parallel computer to store the simulation result.
3. The platform of claim 2,
and the parallel computer is also used for sending the simulation result to the SCADA monitoring system so that the SCADA monitoring system analyzes the simulation result.
4. The platform of claim 1,
the target database includes at least one of: an electromechanical device database, an electromagnetic device database;
the simulation model comprises: electromechanical simulation models and electromagnetic simulation models.
5. The platform of claim 4,
the electromechanical simulation model is used for calling the simulation data stored in the electromechanical device database and performing electromechanical simulation on the simulation data stored in the electromechanical device database under the condition that the time sequence of the electromechanical simulation model is consistent with the time sequence of the electromechanical device database.
6. The platform of claim 5,
the simulation data stored in the mechatronic device database includes at least one of: generator parameters, transformer parameters, power load parameters, power reactive compensation parameters, and ac line parameters.
7. The platform of claim 5,
the electromagnetic simulation model is used for calling the simulation data stored in the electromagnetic equipment database and performing electromagnetic simulation on the simulation data stored in the electromagnetic equipment database under the condition that the time sequence of the electromagnetic simulation model is consistent with the time sequence of the electromagnetic equipment database.
8. The platform of claim 7,
the simulation data stored in the electromagnetic device database includes at least one of: converter parameters, direct current line parameters, smoothing reactor parameters, filter parameters, and system parameters of the direct current control system.
9. The platform of claim 5, wherein the simulation model further comprises: the data interaction interface is respectively connected with the electromechanical simulation model and the electromagnetic simulation model;
the data interaction interface is used for carrying out data interaction on the simulation process of the electromechanical simulation model and the simulation process of the electromagnetic simulation model so as to enable the simulation model to carry out electromechanical and electromagnetic hybrid simulation.
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