CN114185280B - Energy storage power station semi-physical real-time simulation architecture construction method based on embedded system - Google Patents
Energy storage power station semi-physical real-time simulation architecture construction method based on embedded system Download PDFInfo
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- 238000004146 energy storage Methods 0.000 title claims abstract description 62
- 238000004088 simulation Methods 0.000 title claims abstract description 60
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The application relates to the technical field of power systems, and discloses an energy storage power station semi-physical real-time simulation architecture building method based on an embedded system, which comprises the following steps: building an energy storage power station system model; converting the energy storage power station system model into a target model file; transplanting the target model file to an embedded real-time kernel system, so that the energy storage power station system model runs in the embedded real-time kernel system in real time; and connecting an external upper computer and an actual PCS board card to the embedded real-time kernel system to realize semi-physical real-time joint simulation of the energy storage power station system. Therefore, the comprehensive performance test can be carried out on the whole station and equipment of the energy storage power station, and an accurate reference is provided for evaluating the specific performance of the equipment.
Description
Technical Field
The application relates to the technical field of power systems, in particular to an energy storage power station semi-physical real-time simulation architecture building method based on an embedded system.
Background
Simulations are an important means and tool for studying the performance of large power systems, which have been used in a very wide variety of fields of power systems, for example for system planning, operation optimization, fault analysis, etc., and can help the personnel concerned to make a reasonable decision to avoid or reduce problems that may occur in the operation of the system. Along with the large-scale development of electrochemical energy storage, the method has higher and higher requirements on the functions of the whole energy storage power station and control equipment thereof, and can effectively judge the performance indexes and control equipment quality by means of simulation of the energy storage power station and the control equipment.
The simulation means commonly adopted by the existing energy storage power station mainly comprise software off-line simulation and semi-physical real-time simulation. The software off-line simulation mainly verifies the principle level of the control algorithm, and is generally realized by using software only, so that the simulation method has the defect that the simulation method does not interact with actual equipment, and meanwhile, the simulation algorithm runs on a general operating system, so that the real-time performance of the simulation is not strong. The semi-physical real-time simulation is mainly used for verifying the control performance of the actual equipment, is generally combined with software and hardware, can be used for carrying out information interaction with a control board card of the actual equipment, and is oriented to a specific professional field from a self-contained software model library, and has powerful simulation function. However, the current semi-physical real-time simulation has the defect that software and hardware systems are generally difficult to expand and lack flexibility. Meanwhile, the support on the communication protocol is weaker, and the requirement of communication interaction with various actual devices is difficult to meet. In addition, the current semi-physical real-time simulation system is large in size, heavy, inconvenient to carry and generally used in a laboratory.
Disclosure of Invention
The application provides an embedded system-based energy storage power station semi-physical real-time simulation architecture building method, which aims to solve the problems in the prior art.
In order to achieve the above object, the present application is realized by the following technical scheme:
the application provides an energy storage power station semi-physical real-time simulation architecture building method based on an embedded system, which comprises the following steps:
s1: building an energy storage power station system model;
s2: converting the energy storage power station system model into a target model file;
s3: transplanting the target model file to an embedded real-time kernel system, so that an energy storage power station system model runs in the embedded real-time kernel system in real time;
s4: and connecting an external upper computer and an actual PCS board card to the embedded real-time kernel system to realize semi-physical real-time joint simulation of the energy storage power station system.
Optionally, the energy storage power station system model includes two parallel PCS primary circuits, which are a first PCS primary circuit and a second PCS primary circuit, respectively, where the first PCS primary circuit is connected to a PCS simulation control ring for self-simulation operation of the energy storage power station, and the second PCS primary circuit is connected to a control ring externally connected with an actual PCS.
Optionally, when the energy storage power station system model is built, a PCS simulation control loop input interface, a stand-alone infinite system power output interface and a PCS external control board card interaction interface are reserved.
Optionally, when the energy storage power station system model is converted into a target model file, the reserved PCS simulation control loop input interface is configured into an input structure body, and the reserved single machine infinite system power output interface is configured into an output structure body.
Optionally, the S3 includes:
constructing and controlling a main thread, a communication thread, a model thread and a system IO thread program by utilizing an embedded real-time kernel system multithreading technology, wherein the main thread is used for generating the communication thread, the model thread and the system IO thread, and after the communication thread crashes, the main thread regenerates the communication thread; the communication thread is used for carrying out communication interaction with an external GUI, the actual PCS board card control quantity and the model thread;
in a communication thread program, a bidirectional interaction interface with an external GUI, an actual PCS board card control amount and a model thread program is established based on a preset protocol; the model thread is used for simulating a single machine infinite system, a PCS primary main circuit and a PCS simulation control loop; the system IO thread is used for interacting with the IO interface of the embedded system IO and the external PCS.
Optionally, the S4 includes:
the external upper computer and the actual PCS board card are connected to the embedded real-time kernel system, the upper computer is used for controlling interaction with the model thread program, and the upper computer is used for controlling interaction with the actual PCS board card, so that semi-physical real-time simulation of the energy storage power station is realized.
The beneficial effects are that:
the application provides an embedded system-based energy storage power station semi-physical real-time simulation architecture construction method, which is characterized by comprising the following steps: building an energy storage power station system model; converting the energy storage power station system model into a target model file; transplanting the target model file to an embedded real-time kernel system, so that the energy storage power station system model runs in the embedded real-time kernel system in real time; and connecting an external upper computer and an actual PCS board card to the embedded real-time kernel system to realize semi-physical real-time joint simulation of the energy storage power station system. Therefore, the comprehensive performance test can be carried out on the whole station and equipment of the energy storage power station, and an accurate reference is provided for evaluating the specific performance of the equipment.
Drawings
FIG. 1 is a flow chart of an embedded system-based energy storage power station semi-physical real-time simulation architecture building method according to a preferred embodiment of the application;
FIG. 2 is a schematic block diagram of an embedded real-time kernel system according to a preferred embodiment of the present application.
Detailed Description
The following description of the present application will be made clearly and fully, and it is apparent that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1-2, an embodiment of the present application provides a method for building an energy storage power station semi-physical real-time simulation architecture based on an embedded system, including:
s1: building an energy storage power station system model;
s2: converting the energy storage power station system model into a target model file;
in this step, the object model file may be a C code file.
S3: transplanting the target model file to an embedded real-time kernel system, so that the energy storage power station system model runs in the embedded real-time kernel system in real time;
s4: and connecting an external upper computer and an actual PCS board card to the embedded real-time kernel system to realize semi-physical real-time joint simulation of the energy storage power station system.
The method for constructing the semi-physical real-time simulation framework of the energy storage power station based on the embedded system can perform comprehensive performance test on the whole station and equipment of the energy storage power station, and provides accurate reference for judging the specific performance of the equipment.
Optionally, the energy storage power station system model includes two parallel PCS primary main circuits, which are a first PCS primary main circuit and a second PCS primary main circuit respectively, where the first PCS primary main circuit is connected with a PCS simulation control ring for self-simulation operation of the energy storage power station, and the second PCS primary main circuit is connected with a control ring externally connected with an actual PCS.
Optionally, when the energy storage power station system model is built, a PCS simulation control loop input interface, a stand-alone infinite system power output interface and a PCS external control board card interaction interface are reserved.
In the optional implementation mode, the energy storage power station system model is built in Matlab/Simulink, and the energy storage power station system model consists of a single machine infinity system, a PCS primary main circuit and a PCS simulation control loop model, and simulation verification is completed on the energy storage power station system, so that the effectiveness and the correctness of the simulation control model and parameters are ensured. The model comprises two PCS primary main circuits connected in parallel, a PCS simulation control loop connected with the PCS primary main circuit for the self-simulation operation of the energy storage power station, and a control loop connected with the external actual PCS.
The PCS simulation control loop input interface is reserved for GUI control interaction, and the stand-alone infinite system power output interface is reserved for displaying simulation results. The reserved PCS external control panel card interactive interface is used for actual PCS control quantity access. In this way, scalability can be improved by reserving interfaces.
Optionally, when the energy storage power station system model is converted into the target model file, the reserved PCS simulation control loop input interface is configured into an input structure body, and the reserved single machine infinite system power output interface is configured into an output structure body.
In this alternative embodiment, the energy storage power station system model is converted to a C code file using a code automation generation tool, the reserved PCS simulation model input interface is configured in the code as an input structure, and the reserved output interface is configured as an output structure.
Optionally, S3 includes:
constructing and controlling a main thread, a communication thread, a model thread and a system IO thread program by utilizing an embedded real-time kernel system multithreading technology, wherein the main thread is used for generating the communication thread, the model thread and the system IO thread, and regenerating the communication thread after the communication thread crashes; the communication thread is used for carrying out communication interaction with an external GUI, the actual PCS board card control quantity and the model thread; in a communication thread program, a bidirectional interaction interface with an external GUI, an actual PCS board card control amount and a model thread program is established based on a preset protocol; the model thread is used for simulating a single machine infinite system, a PCS primary main circuit and a PCS simulation control loop; the system IO thread is used for interacting with the IO interface of the embedded system IO and the external PCS. Thus, by integrating a plurality of communication protocol libraries, the degree of support for a plurality of communication protocols can be improved.
Optionally, S4 includes:
the external upper computer and the actual PCS board card are connected to the embedded real-time kernel system, the upper computer is used for controlling interaction with the model thread program, and the upper computer is used for controlling interaction with the actual PCS board card, so that semi-physical real-time simulation of the energy storage power station is realized.
In summary, the method for constructing the semi-physical real-time simulation framework of the energy storage power station based on the embedded system enables the energy storage system model to operate in the embedded system, and the embedded system can integrate a plurality of communication protocol libraries, so that the problem that the embedded system is difficult to be compatible with a plurality of communication protocols can be solved; and the embedded system thread can call the high-precision timer in real time, so that the simulation can run in real time.
The foregoing describes in detail preferred embodiments of the present application. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the application by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (4)
1. An energy storage power station semi-physical real-time simulation architecture construction method based on an embedded system is characterized by comprising the following steps:
s1: building an energy storage power station system model;
s2: converting the energy storage power station system model into a target model file;
s3: transplanting the target model file to an embedded real-time kernel system, so that an energy storage power station system model runs in the embedded real-time kernel system in real time;
s4: connecting an external upper computer and an actual PCS board card to an embedded real-time kernel system to realize semi-physical real-time joint simulation of the energy storage power station system;
the step S3 comprises the following steps:
constructing and controlling a main thread, a communication thread, a model thread and a system IO thread program by utilizing an embedded real-time kernel system multithreading technology, wherein the main thread is used for generating the communication thread, the model thread and the system IO thread, and after the communication thread crashes, the main thread regenerates the communication thread; the communication thread is used for carrying out communication interaction with an external GUI, the actual PCS board card control quantity and the model thread;
in a communication thread program, a bidirectional interaction interface with an external GUI, an actual PCS board card control amount and a model thread program is established based on a preset protocol; the model thread is used for simulating a single machine infinite system, a PCS primary main circuit and a PCS simulation control loop; the system IO thread is used for interacting with an IO interface of the embedded system IO and an external PCS;
the energy storage power station system model comprises two PCS primary main circuits which are connected in parallel, wherein the two PCS primary main circuits are a first PCS primary main circuit and a second PCS primary main circuit respectively, the first PCS primary main circuit is connected with a PCS simulation control ring for self-simulation operation of the energy storage power station, and the second PCS primary main circuit is connected with a control ring externally connected with an actual PCS.
2. The method for building the semi-physical real-time simulation framework of the energy storage power station based on the embedded system according to claim 1, wherein a PCS simulation control loop input interface, a stand-alone infinite system power output interface and a PCS external control board card interaction interface are reserved when the energy storage power station system model is built.
3. The method for constructing the semi-physical real-time simulation framework of the energy storage power station based on the embedded system according to claim 1, wherein when the energy storage power station system model is converted into a target model file, the reserved PCS simulation control loop input interface is configured into an input structure body, and the reserved single machine infinite system power output interface is configured into an output structure body.
4. The method for constructing the semi-physical real-time simulation architecture of the energy storage power station based on the embedded system according to claim 1, wherein the step S4 comprises:
the external upper computer and the actual PCS board card are connected to the embedded real-time kernel system, the upper computer is used for controlling interaction with the model thread program, and the upper computer is used for controlling interaction with the actual PCS board card, so that semi-physical real-time simulation of the energy storage power station is realized.
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