CN117518866A - Performance test method and device for ship steam power system - Google Patents
Performance test method and device for ship steam power system Download PDFInfo
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Abstract
The invention provides a performance test method and device of a ship steam power system, wherein the method comprises the following steps: based on a pre-constructed actually measured data and a simulation mechanism hybrid-driven high-fidelity simulation model of the ship steam power system, correcting the simulation model of the virtual space by utilizing test data generated when a physical entity rack of the ship steam power system operates; and inputting a preset control strategy in the actual loop into the corrected simulation model for simulation, and determining an optimal control strategy based on a simulation result. According to the performance test method and device for the ship steam power system, the simulation model of the virtual space is corrected through the test data of the physical space, the optimal control strategy is determined based on the simulation result of the simulation model, feedback iteration of the physical space and the virtual space is formed, the simulation precision is improved, the test period is shortened, and a foundation is laid for virtual test and intelligent design.
Description
Technical Field
The invention relates to the technical field of ship power, in particular to a performance test method and device of a ship steam power system.
Background
The power system is a heart of marine equipment such as ships, provides necessary power for propulsion and the like for the marine equipment such as ships and full-ship electric energy, and is a foundation for stable and reliable operation of the marine equipment such as ships. The ship steam power system has complex composition and huge body volume, and simultaneously meets the operation and use requirements of changeable working conditions, high control difficulty, safety, reliability and the like.
For a long time, performance test and design verification of a marine steam power system take physical space engineering test as a main component, virtual space simulation analysis as an auxiliary component, and physical space and virtual space are mutually independent and developed respectively, and the mapping, interaction, cooperation and other relations between the two are weak, so that a series of problems are caused.
On one hand, the traditional simulation model can not fully reflect the actual design and operation state of the ship steam power system, so that the related simulation result is not accurate enough and the simulation capability is limited; on the other hand, the traditional physical test testing and verifying link is lagged behind the design process of the steam power system, and some marine condition influences and problems are often exposed at the later stage of the test, so that the design and test iteration period is long, the cost is high, and the higher development risk is brought.
Disclosure of Invention
The invention provides a performance test method and device for a ship steam power system, which are used for solving the defects in the prior art, improving the accuracy of performance test of the ship steam power system and shortening the test period.
The invention provides a performance test method of a ship steam power system, which comprises the following steps:
based on a pre-constructed actually measured data and a simulation mechanism hybrid-driven high-fidelity simulation model of the ship steam power system, correcting the simulation model of the virtual space by utilizing test data generated when a physical entity rack of the ship steam power system operates;
and inputting a preset control strategy in the actual loop into the corrected simulation model for simulation, and determining an optimal control strategy based on a simulation result.
According to the performance test method of the ship steam power system provided by the invention, the simulation model of the virtual space is corrected, and the performance test method comprises the following steps:
performing off-line correction on related parameters in the simulation model of the virtual space;
and carrying out online correction on relevant parameters in the simulation model of the virtual space.
According to the performance test method of the ship steam power system provided by the invention, the off-line correction of the relevant parameters in the simulation model of the virtual space is carried out, and the performance test method comprises the following steps:
performing sensitivity analysis on related parameters in the simulation model of the virtual space, and extracting key model parameters;
and comparing the simulation result key data with the off-line test data, and correcting the key model parameters.
According to the performance test method of the ship steam power system provided by the invention, the on-line correction of the relevant parameters in the simulation model of the virtual space is carried out, and the performance test method comprises the following steps:
acquiring test data in a data center database;
if the acquired test data is within the allowable range of the historical data, continuing to use the current simulation model;
and if the acquired test data are not in the range allowed by the historical data, stopping the operation of the current simulation model, and correcting model parameters of the simulation model by a data driving-based method.
According to the performance test method of the ship steam power system provided by the invention, a preset control strategy in an actual loop is input into a corrected simulation model for simulation, and an optimal control strategy is determined based on a simulation result, and the performance test method comprises the following steps:
performing on-line adjustment on control measurement of a ship steam power system;
inputting a control strategy preset in an actual loop into a corrected simulation model for simulation;
and analyzing the data change condition of the controlled quantity in the simulation result, and determining the optimal control strategy.
The invention provides a performance test method of a ship steam power system, which further comprises the following steps:
determining the composition and coupling relation of a ship steam power system;
and constructing a high-fidelity simulation model of the ship steam power system driven by mixing the measured data and the simulation mechanism based on the composition and the coupling relation of the ship steam power system.
According to the performance test method of the ship steam power system provided by the invention, the ship steam power system high-fidelity simulation model driven by mixing measured data and simulation mechanism is constructed based on the composition and coupling relation of the ship steam power system, and the performance test method comprises the following steps:
determining the operation characteristics and topological association of the ship steam power system based on the composition and the coupling relation of the ship steam power system;
extracting a main subsystem and equipment affecting the operation characteristic of the ship steam power system based on the operation characteristic and the topological association of the ship steam power system;
based on the virtual space construction requirement of the ship steam power system and the types of main subsystems and equipment influencing the operation characteristics of the ship steam power system, respectively constructing models to obtain a high-fidelity simulation model of the ship steam power system driven by the mixed actual measurement data and simulation mechanism.
The invention provides a performance test method of a ship steam power system, which further comprises the following steps:
analyzing functional composition, running control, operation flow and main parameter indexes of a ship steam power system;
determining the controlled quantity, the control quantity and the monitored quantity of the ship steam power system;
corresponding sensors are arranged based on the controlled quantity, the control quantity and the monitoring quantity, and test data are collected through the sensors.
The invention also provides a performance testing device of the ship steam power system, which comprises:
the model correction module is used for correcting the simulation model of the virtual space by utilizing test data generated when the physical entity rack of the ship steam power system operates based on a pre-constructed high-fidelity simulation model of the ship steam power system driven by the actual measurement data and the simulation mechanism in a mixed mode;
the strategy optimization module is used for inputting a control strategy preset in the actual loop into the corrected simulation model for simulation, and determining an optimal control strategy based on a simulation result.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the performance test method of the ship steam power system.
The invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of performance testing of a marine vessel steam power system as described in any of the above.
The invention also provides a computer program product comprising a computer program which when executed by a processor implements a method of testing the performance of a marine vessel steam power system as described in any one of the above.
According to the performance test method and device for the ship steam power system, the simulation model of the virtual space is corrected through the test data of the physical space, the optimal control strategy is determined based on the simulation result of the simulation model, feedback iteration of the physical space and the virtual space is formed, the simulation precision is improved, the test period is shortened, and a foundation is laid for virtual test and intelligent design.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a method for testing the performance of a marine steam power system provided by the invention;
FIG. 2 is a schematic diagram of a high-fidelity simulation model of a ship steam power system driven by a mixed mode of measured data and simulation mechanism;
FIG. 3 is a schematic diagram of a data processing flow provided by the present invention;
FIG. 4 is a schematic diagram of a logic flow for online correction of relevant parameters in a simulation model for a virtual space provided by the present invention;
FIG. 5 is a schematic diagram of a logic flow for implementing a control strategy provided by the present invention;
FIG. 6 is a schematic diagram of an integrated platform interaction interface of the marine steam power virtual-real interaction system provided by the invention;
FIG. 7 is a schematic diagram of a performance testing apparatus for a marine steam power system according to the present invention;
fig. 8 is a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
For a long time, performance test and design verification of a marine steam power system take physical space engineering test as a main component, virtual space simulation analysis as an auxiliary component, and physical space and virtual space are mutually independent and developed respectively, and the mapping, interaction, cooperation and other relations between the two are weak, so that a series of problems are caused. On one hand, the traditional simulation model can not fully reflect the actual design and operation state of the ship steam power system, so that the related simulation result is not accurate enough and the simulation capability is limited; on the other hand, the traditional physical test testing and verifying link is lagged behind the design process of the steam power system, and some marine condition influences and problems are often exposed at the later stage of the test, so that the design and test iteration period is long, the cost is high, and the higher development risk is brought. The mutual interaction of a physical space and a virtual space, feedback and a cooperative mechanism are weak and have poor real-time performance, so that the splitting of the model and the data of the two models becomes a large brake for restricting the design research and development capability and the comprehensive performance of the ship steam power system.
In order to solve the dilemma, the virtual-real interaction technology is introduced into the field of ship steam power, advanced technologies such as sensing, calculating, communication and control are integrated, physical entities are informationized from the aspects of calculating, interaction and control, and fusion coordination of a virtual space and a physical space is realized. However, as the ship steam power system has complex composition and numerous influencing factors, the precise and rapid simulation prediction of the virtual space, the full-state real-time perception of the physical space and interaction and cooperation have certain difficulties, the invention provides the ship steam power virtual-real interaction system, and the real-time transmission of complex and highly-correlated measurement data and the rapid and precise prediction of the virtual space are realized by a mixed driving prediction method of actual measurement data and simulation mechanisms, so that the ship steam power virtual-real interaction system with the characteristics of state real-time perception, data fusion analysis, high-fidelity simulation prediction, virtual-real interaction feedback and the like is formed, and scientific decision basis is provided for the design, test, operation and maintenance of the ship steam power system.
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, 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 embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a schematic flow chart of a performance test method of a ship steam power system provided by the invention, and as shown in fig. 1, the invention provides a performance test method of a ship steam power system, comprising the following steps:
and 101, correcting a simulation model of a virtual space by utilizing test data generated when a physical entity rack of the ship steam power system operates based on a pre-constructed actually measured data and simulation mechanism hybrid-driven ship steam power system high-fidelity simulation model.
And 102, inputting a control strategy preset in an actual loop into the corrected simulation model for simulation, and determining an optimal control strategy based on a simulation result.
Specifically, before the simulation model of the virtual space is corrected by utilizing test data generated when the physical entity rack of the ship steam power system runs based on the pre-constructed actual measurement data and the simulation mechanism hybrid-driven ship steam power system high-fidelity simulation model, the actual measurement data and the simulation mechanism hybrid-driven ship steam power system high-fidelity simulation model can be pre-constructed.
The step of constructing a high-fidelity simulation model of the ship steam power system driven by the mixed actual measurement data and the simulation mechanism can comprise the following steps:
determining the composition and coupling relation of a ship steam power system;
and constructing a high-fidelity simulation model of the ship steam power system driven by mixing the measured data and the simulation mechanism based on the composition and the coupling relation of the ship steam power system.
In some embodiments, constructing a high-fidelity simulation model of a marine steam power system driven by mixing measured data and a simulation mechanism based on the composition and coupling relation of the marine steam power system comprises:
determining the operation characteristics and topological association of the ship steam power system based on the composition and the coupling relation of the ship steam power system;
extracting a main subsystem and equipment affecting the operation characteristic of the ship steam power system based on the operation characteristic and the topological association of the ship steam power system;
based on the virtual space construction requirement of the ship steam power system and the types of main subsystems and equipment influencing the operation characteristics of the ship steam power system, respectively constructing models to obtain a high-fidelity simulation model of the ship steam power system driven by the mixed actual measurement data and simulation mechanism.
Specifically, fig. 2 is a schematic diagram of a high-fidelity simulation model of a ship steam power system driven by mixing measured data and a simulation mechanism, as shown in fig. 2, firstly, carding components and coupling relations of the ship steam power system, extracting main subsystems and equipment influencing the operation characteristics of the ship steam power system according to the operation characteristics and topological association of the ship steam power system, and dividing the ship steam power system into different levels such as subsystems, equipment, parts and the like in sequence according to simulation requirements, wherein the different levels comprise a boundary condition model, a data driving model and the like.
According to the virtual space construction requirement of the ship steam power system, constructing a mechanism simulation model for parts or equipment with clear mechanism, such as pipelines, elbows and the like; for equipment with a clear mechanism but complex structure, such as a centrifugal pump and the like, a mechanism model is constructed, wherein part of parameters are given out through the mechanism and are corrected by combining test data; for equipment with a mechanism or an internal structure which is not clear yet, a neural network (such as BP network and the like) data driving method is used for carrying out model construction, and a boundary model under the marine environment is constructed, wherein a marine physical model, a marine environment additional acting force model and the like are included, wherein for the marine environment where a ship power system is located, equipment potential difference changes (related to pressure and the like) at different moments are introduced, inertia force introduced by swinging is added into a momentum equation, and the momentum equation is as follows:
wherein, beta represents angular velocity, and the unit is/s; omega represents angular acceleration in units of/s 2; r represents the wobble radius in m.
According to the composition of the ship steam power system, for a local subsystem, adopting a serial structure data-mechanism hybrid driving model to identify the thermodynamic parameters of the system; for a subsystem which is complex and has performance degradation, such as a heat exchanger, a parallel structure data-mechanism hybrid driving simulation model is adopted; and for the whole ship steam power system, a mixed structure data-mechanism mixed driving model is adopted to realize high-fidelity simulation of the ship steam power system.
In addition, a physical space state sensing system of the ship steam power system can be constructed before the simulation model of the virtual space is corrected by utilizing test data generated when a physical entity rack of the ship steam power system operates based on a pre-constructed actually measured data and simulation mechanism hybrid-driven ship steam power system high-fidelity simulation model.
The method for constructing the ship steam power system physical space state sensing system comprises the following steps of:
analyzing functional composition, running control, operation flow and main parameter indexes of a ship steam power system;
determining the controlled quantity, the control quantity and the monitored quantity of the ship steam power system;
corresponding sensors are arranged based on the controlled quantity, the control quantity and the monitoring quantity, and test data are collected through the sensors.
Specifically, firstly, the functional composition, running control, operation flow, main parameter indexes and the like of a ship power system are combed, the measurement requirements of different parameters such as the controlled quantity, the monitored quantity and the like of the ship steam power system are analyzed, and corresponding sensors are arranged, wherein the valve at the key part is an electric regulating valve and has a valve position monitoring function.
Fig. 3 is a schematic diagram of a data processing flow provided by the present invention, as shown in fig. 3, after an original test signal acquired by a sensor is acquired by the sensor, the sensor transmits data to a data center after analyzing according to a data transmission protocol (such as siemens S7 protocol, UDP protocol, etc.) through a network port and an optical fiber by a data acquisition system, the original data is processed and analyzed to further extract effective information, the processing and analyzing process includes steps of denoising, preprocessing, data perspective, visualization, etc., wherein the denoising deletes or repairs abnormal data points affecting the quality of the data, preprocessing is performed by adopting methods of outlier rejection, data smoothing, data interpolation filling, etc., such as using statistical models and learning algorithms, finding hidden modes and structures in the data, mining potential relations behind the data, and compressing complex and highly correlated measurement data by methods of feature extraction, etc., for test data with large data volume such as vibration noise.
In some embodiments, correcting the simulation model of the virtual space includes:
performing off-line correction on related parameters in the simulation model of the virtual space;
and carrying out online correction on relevant parameters in the simulation model of the virtual space.
The off-line correction of the relevant parameters in the simulation model of the virtual space comprises the following steps:
performing sensitivity analysis on related parameters in the simulation model of the virtual space, and extracting key model parameters;
and comparing the simulation result key data with the off-line test data, and correcting the key model parameters.
Specifically, the correction of the simulation model of the virtual space can be summarized as "real control and virtual", namely, when the physical entity rack of the ship steam power system runs, test data are stored in a database by utilizing a data center, and the simulation model of the virtual space is corrected by two modes of off-line correction and on-line correction.
The off-line correction is carried out by carrying out sensitivity analysis on related parameters in the simulation model, extracting key model parameters, and correcting the key model parameters by comparing key data (such as pump lift, flow and the like) of the simulation result with off-line test data.
In some embodiments, online correction of relevant parameters in a simulation model of a virtual space includes:
acquiring test data in a data center database;
if the acquired test data is within the allowable range of the historical data, continuing to use the current simulation model;
and if the acquired test data are not in the range allowed by the historical data, stopping the operation of the current simulation model, and correcting model parameters of the simulation model by a data driving-based method.
Specifically, fig. 4 is a logic flow diagram of online correction of relevant parameters in a simulation model for a virtual space, as shown in fig. 4, in the online simulation, test data stored in a database is read by using an application program interface (Application Programming Interface, API) of a service program call data center, according to the read new data and historical data (old data), simulation-test result key data (such as pump lift, flow and the like) are compared, if the difference value is within an allowable range of the historical data, the existing simulation model is continuously used, the operation of a simulation module is stopped, the test data is operated and utilized based on methods such as model recursive correction or incremental learning update, the correction of model parameters (within a certain range) is further started again based on the data driving method, the simulation result and the test result are compared, if the difference value is within the allowable range, the online correction is ended, and otherwise, the operation is repeated again.
In some embodiments, inputting a control strategy preset in an actual loop into a corrected simulation model for simulation, and determining an optimal control strategy based on a simulation result, including:
performing on-line adjustment on control measurement of a ship steam power system;
inputting a control strategy preset in an actual loop into a corrected simulation model for simulation;
and analyzing the data change condition of the controlled quantity in the simulation result, and determining the optimal control strategy.
Specifically, fig. 5 is a schematic diagram of an execution logic flow of a control strategy provided by the present invention, and as shown in fig. 5, the execution of the control strategy may be summarized as "virtual control, which mainly refers to online adjustment of control measurement of a steam power system of a ship, the control strategy designed in an actual loop is simulated in simulation software, and the quality of the control strategy is analyzed by the data change condition of a controlled quantity simulated in the simulation software, and an optimal control strategy is selected.
After the optimal control strategy is determined, three values of optimal PID parameters kp, ki and kd are stored in a database, the three values of the kp, ki and kd stored in the database are imported into a PID module of a PLC through a protocol, then an actual loop sensor converts an actually measured controlled quantity into a voltage value, the voltage value is input into a D/A conversion module to convert the actually measured controlled quantity into a digital quantity, then the digital quantity of an actually acquired parameter is calculated in the PLC, a digital quantity is output to an A/D conversion interface, the A/D conversion interface converts the digital quantity into an analog quantity and outputs the analog quantity to a controlled element, and the controlled quantity is controlled by the control element.
Fig. 6 is a schematic diagram of an integrated platform interaction interface of the ship steam power virtual-real interaction system, and as shown in fig. 6, the invention also constructs an integrated platform interaction interface, dynamically displays test data through a two-dimensional/three-dimensional graph, constructs controls such as a virtual instrument, an overrun early warning, a fault prompting lamp and the like, combines graph charts such as a graph, a line chart and other visual components, displays the test data in a multi-dimensional and multi-style manner, and realizes analysis functions such as data parameter comparison, a working condition curve, a physical field and the like.
The comprehensive platform interaction interface of the ship steam power virtual-real interaction system consists of a data interface module, a data management module, a data visual display and model simulation interaction module. The data interface module mainly realizes data transmission and conversion between the test bed and the centralized display system and data interaction between the characteristic simulation model and the centralized display system, and performs unified management and standardization on interfaces and communication protocols between the modules so as to facilitate the calling of other program modules; the data management module comprises management of original test data of the bench, management of derived data after preprocessing such as cleaning, extracting, smoothing and time alignment of the original data, management of data analysis and calculation results, management of historical data of each module according to time axes and management of system configuration data; the data visual display comprises real-time data display, historical data tracing and playback, and display of typical fault states, fault events and early warning information; the model simulation interaction comprises a two-dimensional model of a rack, a display of a three-dimensional model, a display of equipment points and states of typical faults and an interaction control module.
Aiming at the problems of mutual fracture of a virtual space and a physical space, low test data utilization rate, low simulation speed, low precision and the like of the existing ship steam power system, the invention provides a ship steam power virtual-real interaction performance detection method, the accurate and rapid prediction of the virtual space is realized through a mixed driving prediction model of actual measurement data and a simulation mechanism, the real-time transmission of complex data is realized through a feature extraction method, the feedback iteration of the physical space and the virtual space is formed, the promotion of the simulation precision is realized, and a foundation is laid for virtual test and intelligent design.
The performance testing device of the ship steam power system provided by the invention is described below, and the performance testing device of the ship steam power system described below and the performance testing method of the ship steam power system described above can be correspondingly referred to each other.
Fig. 7 is a schematic structural diagram of a performance testing device of a steam power system of a ship according to the present invention, and as shown in fig. 7, the performance testing device of a steam power system of a ship according to the present invention includes:
the model correction module 701 is configured to correct a simulation model of a virtual space by using test data generated when a physical bench of the ship steam power system operates, based on a pre-constructed actually measured data and a high-fidelity simulation model of the ship steam power system driven by a simulation mechanism in a mixed manner;
the policy optimization module 702 is configured to input a control policy preset in the actual loop into the corrected simulation model for simulation, and determine an optimal control policy based on a simulation result.
Specifically, the performance testing device for the ship steam power system provided by the embodiment of the present application can implement all the method steps implemented by the method embodiment and achieve the same technical effects, and the same parts and beneficial effects as those of the method embodiment in the embodiment are not described in detail herein.
Fig. 8 illustrates a physical structure diagram of an electronic device, as shown in fig. 8, which may include: processor 810, communication interface (Communications Interface) 820, memory 830, and communication bus 840, wherein processor 810, communication interface 820, memory 830 accomplish communication with each other through communication bus 840. Processor 810 may invoke logic instructions in memory 830 to perform a method of performance testing of a marine vessel steam power system, the method comprising:
based on a pre-constructed actually measured data and a simulation mechanism hybrid-driven high-fidelity simulation model of the ship steam power system, correcting the simulation model of the virtual space by utilizing test data generated when a physical entity rack of the ship steam power system operates;
and inputting a preset control strategy in the actual loop into the corrected simulation model for simulation, and determining an optimal control strategy based on a simulation result.
Further, the logic instructions in the memory 830 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform 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, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product comprising a computer program, the computer program being storable on a non-transitory computer readable storage medium, the computer program, when executed by a processor, being capable of performing the method of testing the performance of a marine steam power system provided by the methods described above, the method comprising:
based on a pre-constructed actually measured data and a simulation mechanism hybrid-driven high-fidelity simulation model of the ship steam power system, correcting the simulation model of the virtual space by utilizing test data generated when a physical entity rack of the ship steam power system operates;
and inputting a preset control strategy in the actual loop into the corrected simulation model for simulation, and determining an optimal control strategy based on a simulation result.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform a method of testing performance of a marine steam power system provided by the above methods, the method comprising:
based on a pre-constructed actually measured data and a simulation mechanism hybrid-driven high-fidelity simulation model of the ship steam power system, correcting the simulation model of the virtual space by utilizing test data generated when a physical entity rack of the ship steam power system operates;
and inputting a preset control strategy in the actual loop into the corrected simulation model for simulation, and determining an optimal control strategy based on a simulation result.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method of testing the performance of a marine steam power system, comprising:
based on a pre-constructed actually measured data and a simulation mechanism hybrid-driven high-fidelity simulation model of the ship steam power system, correcting the simulation model of the virtual space by utilizing test data generated when a physical entity rack of the ship steam power system operates;
and inputting a preset control strategy in the actual loop into the corrected simulation model for simulation, and determining an optimal control strategy based on a simulation result.
2. The method of performance testing of a marine steam power system of claim 1, wherein correcting the simulation model of the virtual space comprises:
performing off-line correction on related parameters in the simulation model of the virtual space;
and carrying out online correction on relevant parameters in the simulation model of the virtual space.
3. The method for testing the performance of the marine steam power system according to claim 2, wherein the off-line correction of the relevant parameters in the simulation model of the virtual space comprises:
performing sensitivity analysis on related parameters in the simulation model of the virtual space, and extracting key model parameters;
and comparing the simulation result key data with the off-line test data, and correcting the key model parameters.
4. The method for testing the performance of the marine steam power system according to claim 2, wherein the online correction of the relevant parameters in the simulation model of the virtual space comprises:
acquiring test data in a data center database;
if the acquired test data is within the allowable range of the historical data, continuing to use the current simulation model;
and if the acquired test data are not in the range allowed by the historical data, stopping the operation of the current simulation model, and correcting model parameters of the simulation model by a data driving-based method.
5. The performance test method of a marine vessel steam power system according to claim 1, wherein inputting a control strategy preset in an actual loop into the corrected simulation model for simulation, and determining an optimal control strategy based on a simulation result, comprises:
performing on-line adjustment on control measurement of a ship steam power system;
inputting a control strategy preset in an actual loop into a corrected simulation model for simulation;
and analyzing the data change condition of the controlled quantity in the simulation result, and determining the optimal control strategy.
6. The method for testing the performance of a marine steam power system of claim 1, further comprising:
determining the composition and coupling relation of a ship steam power system;
and constructing a high-fidelity simulation model of the ship steam power system driven by mixing the measured data and the simulation mechanism based on the composition and the coupling relation of the ship steam power system.
7. The method for testing the performance of the marine steam power system according to claim 6, wherein the constructing the high-fidelity simulation model of the marine steam power system driven by the mixed actual measurement data and the simulation mechanism based on the composition and the coupling relation of the marine steam power system comprises the following steps:
determining the operation characteristics and topological association of the ship steam power system based on the composition and the coupling relation of the ship steam power system;
extracting a main subsystem and equipment affecting the operation characteristic of the ship steam power system based on the operation characteristic and the topological association of the ship steam power system;
based on the virtual space construction requirement of the ship steam power system and the types of main subsystems and equipment influencing the operation characteristics of the ship steam power system, respectively constructing models to obtain a high-fidelity simulation model of the ship steam power system driven by the mixed actual measurement data and simulation mechanism.
8. The method for testing the performance of a marine steam power system of claim 1, further comprising:
analyzing functional composition, running control, operation flow and main parameter indexes of a ship steam power system;
determining the controlled quantity, the control quantity and the monitored quantity of the ship steam power system;
corresponding sensors are arranged based on the controlled quantity, the control quantity and the monitoring quantity, and test data are collected through the sensors.
9. A performance testing apparatus for a marine steam power system, comprising:
the model correction module is used for correcting the simulation model of the virtual space by utilizing test data generated when the physical entity rack of the ship steam power system operates based on a pre-constructed high-fidelity simulation model of the ship steam power system driven by the actual measurement data and the simulation mechanism in a mixed mode;
the strategy optimization module is used for inputting a control strategy preset in the actual loop into the corrected simulation model for simulation, and determining an optimal control strategy based on a simulation result.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements a method for testing the performance of a marine vessel steam power system according to any one of claims 1 to 8 when executing the program.
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| CN202311418340.1A CN117518866A (en) | 2023-10-26 | 2023-10-26 | Performance test method and device for ship steam power system |
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| CN202311418340.1A CN117518866A (en) | 2023-10-26 | 2023-10-26 | Performance test method and device for ship steam power system |
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