CN112286073A - Communication interface device and method for closed-loop simulation of power system - Google Patents
Communication interface device and method for closed-loop simulation of power system Download PDFInfo
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Abstract
The invention discloses a communication interface device and a method for closed-loop simulation of a power system, and belongs to the technical field of information communication. The device of the invention comprises: the communication data modeling module is used for finishing communication data modeling and communication scheme management, and the communication interface box is used for finishing numerical calculation and message format conversion between multiple communication protocols. The invention has the characteristics of convenient modeling, large communication scale, multiple support protocols and the like, and can meet the requirements of diversified closed loop test of power simulation.
Description
Technical Field
The present invention relates to the field of information communication technology, and more particularly, to a communication interface apparatus and method for closed-loop simulation of a power system.
Background
Simulation of an electric power system is an important means for understanding characteristics of the electric power system, and is widely applied to various fields such as production, research and development, teaching and the like. The simulation of the power system roughly passes through three stages of physical simulation, digital-physical hybrid simulation and all-digital simulation, wherein the digital simulation is based on the modern computer technology and information technology, the modeling is flexible and convenient, the simulation scale is large, the cost performance is high, the occupied area is small, the expandability is good, and the method is the main development direction of the current power system simulation.
In the development stage and the network access test stage, people hope to connect the new devices into the system for verifying the actual characteristics, but the actual power grid cannot be easily connected into the devices which are not strictly verified, so that the method for connecting the devices into the mature simulation system for closed-loop simulation for verifying the actual characteristics becomes a better detection means. Corresponding platform interfaces, such as physical interfaces, digital-analog interfaces and the like, are developed in each mainstream simulation platform in a dispute and are used for accessing to a certain type of corresponding actual equipment. The digital real-time simulation system of the power system is generally composed of modules such as a digital simulation computing platform, an interface device and the like. The computing platform comprises a plurality of computing cores (generally a plurality of high-performance servers or a plurality of DSP chips), the computing cores are interconnected through a data bus or a high-speed network, and the real-time simulation computation of the power system is realized based on parallel computation; the interface device is a data interaction interface between the digital simulation computing platform and external equipment/systems, and is mainly used for finishing numerical processing of electric power data, data transmission, clock synchronization and the like.
In recent years, the application of the digital real-time simulation system of the power system is increasingly widespread and is accepted by most users, the requirement for performing closed-loop test on external equipment/systems by using the real-time simulation system of the power system is more and more, along with the progress and wide application of computer technology and communication technology, many power equipment/systems are changed from an original hard-wired connection mode into a communication connection mode, and different equipment and systems often adopt different communication protocols, so that the digital real-time simulation system of the power system is required to support the connection capability of multiple communication protocols.
Disclosure of Invention
In view of the above problem, the present invention provides a communication interface device for closed-loop simulation of an electric power system, comprising:
the communication data modeling unit is used for finishing communication data modeling and communication scheme management, and specifically comprises:
reading a configuration file of external equipment and analyzing the file, acquiring a variable to be communicated of the equipment to be tested, defining a simulation side variable and a communication link, intelligently matching the external variable and the simulation side variable, establishing a communication data composite model library, and selecting a part of communication data composite models to form a communication scheme file;
the communication scheme file is used by a communication interface box;
the communication interface box is used for completing message format conversion between numerical calculation and multiple communication protocols, and specifically comprises:
receiving data of the power simulation server, performing numerical calculation and message format conversion on the data according to user settings in the communication scheme file, sending the data to external equipment, receiving a control instruction of the external equipment, sending the control instruction to the simulation server after protocol conversion, and intervening in the power simulation process, thereby realizing closed-loop simulation of the power simulation device and the external equipment.
Optionally, the communication data modeling unit defines a simulation side variable, reads and analyzes an external device configuration file, performs wizard-type intelligent matching on the simulation side data and the device side communication data according to the partition, the station and the device name, generates a communication composite model, forms a communication scheme, and manages a plurality of schemes.
Optionally, the communication data modeling unit is configured to configure the communication interface, and includes setting a port protocol, an IP and a port number of a connected device, a communication interval, and a start threshold.
Optionally, the communication data modeling unit supports a user to perform numerical calculation setting on data of a certain channel or a certain type of variable on the interface.
Optionally, the communication data modeling unit includes an individual human-computer interaction interface, and is used for message numerical value display and manual debugging in the closed-loop simulation process.
Optionally, the communication interface box includes:
the hardware equipment adopts a shelf type server and is provided with a LINUX operating system;
and the communication interface module is developed based on the LINUX system, designs a global universal interface, is compatible with various communication protocols of optical fibers and Ethernet, and performs numerical calculation and message format conversion on communication data.
Optionally, each communication interface box is connected to the power simulation system server through 2 paths of optical fibers, and the 2 paths of optical fibers transmit data of electromechanical transient simulation and electromagnetic transient simulation respectively, so that the simultaneous transmission of two types of data or only one type of data is supported.
Optionally, each communication interface box is connected with the device to be tested through 4 paths of gigabit ethernet interfaces, so that multiple paths of connection with the same device or connection with different devices are supported, and analog data can be transmitted over 10 ten thousand simultaneously; and when the data volume is larger, the parallel synchronous operation of at most 4 interface boxes is supported.
Optionally, the communication interface box is designed with a unified global communication interface, and is compatible with an IEC104 protocol, a data transmission protocol of a real-time dynamic detection system of a power system, and a Modbus/TCP protocol, a user selects any protocol as required, an interface program automatically completes message conversion, and other protocols can be conveniently extended through a reserved interface.
Optionally, the communication interface box has a configurable numerical calculation function in order to solve the problem that the simulation side data is inconsistent with the external device variable. The user sets in the communication data modeling unit, and the interface program completes corresponding numerical calculation according to the communication scheme file.
The invention also provides a method for closed-loop simulation of the power system, which comprises the following steps:
reading a communication configuration file of an external device or system to be tested, analyzing and acquiring a communication variable of the external device;
defining a simulation side variable according to the type of the external equipment/system;
defining a numerical calculation relation between an external equipment communication variable and a simulation side variable;
intelligently matching the communication variables of the external equipment with the variables of the simulation side, establishing a communication data composite model library, selecting a communication data composite model to generate a communication scheme, and determining an actual communication variable set by the communication scheme;
according to the communication scheme, the communication interface box receives the simulation system data, performs message format conversion and numerical value calculation on the data, and forwards the data to the connected equipment to be tested;
meanwhile, data sent by the equipment to be tested is received, is transmitted to a simulation system of the power system after being subjected to message format conversion, and intervenes in the real-time power simulation process.
The communication interface device and the method provided by the invention have the characteristics of convenience in modeling, large communication scale, support of multiple protocols and the like, and realize the interconnection of the power simulation device and equipment with different protocols.
Drawings
FIG. 1 is a block diagram of a communication interface device for closed loop simulation of an electrical power system in accordance with the present invention;
FIG. 2 is a flow chart of a method for closed loop simulation of an electrical power system according to the present invention.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
The invention provides a communication interface device for closed loop simulation of a power system, as shown in fig. 1, comprising:
the communication data modeling unit is used for finishing communication data modeling and communication scheme management, and specifically comprises:
reading a configuration file of external equipment and analyzing the file, acquiring a variable to be communicated of the equipment to be tested, defining a simulation side variable and a communication link, intelligently matching the external variable and the simulation side variable, establishing a communication data composite model library, and selecting a part of communication data composite models to form a communication scheme file;
the communication scheme file is used by a communication interface box;
the communication interface box is used for completing message format conversion between numerical calculation and multiple communication protocols, and specifically comprises:
receiving data of the power simulation server, performing numerical calculation and message format conversion on the data according to user settings in the communication scheme file, sending the data to external equipment, receiving a control instruction of the external equipment, sending the control instruction to the simulation server after protocol conversion, and intervening in the power simulation process, thereby realizing closed-loop simulation of the power simulation device and the external equipment.
And the communication data modeling unit defines a simulation side variable, reads and analyzes an external equipment configuration file, performs guide type intelligent matching on the simulation side data and the equipment side communication data according to the partitions, the plant stations and the equipment names, generates a communication composite model, forms a communication scheme and manages a plurality of schemes.
And the communication data modeling unit is used for configuring a communication interface, and comprises a port protocol, an IP and port number of connected equipment, a communication interval and a starting threshold value.
And the communication data modeling unit supports a user to carry out numerical calculation setting on data of a certain channel or a certain type of variable on the interface.
And the communication data modeling unit comprises an independent human-computer interaction interface and is used for message numerical value display and manual debugging in the closed-loop simulation process.
A communication interface box, comprising:
the hardware equipment adopts a shelf type server and is provided with a LINUX operating system;
and the communication interface module is developed based on the LINUX system, designs a global universal interface, is compatible with various communication protocols of optical fibers and Ethernet, and performs numerical calculation and message format conversion on communication data.
Each communication interface box is connected with the power simulation system server through 2 paths of optical fibers, the 2 paths of optical fibers respectively transmit data of electromechanical transient simulation and electromagnetic transient simulation, and the two types of data or only one type of data are transmitted simultaneously.
Each communication interface box is connected with the equipment to be tested through 4 paths of gigabit Ethernet interfaces, supports multi-path connection of the same equipment or respectively connects different equipment, and simultaneously transmits analog data more than 10 ten thousand; and when the data volume is larger, the parallel synchronous operation of at most 4 interface boxes is supported.
The communication interface box is designed with a unified global communication interface, is compatible with an IEC104 protocol, a data transmission protocol of a real-time dynamic detection system of a power system and a Modbus/TCP protocol, a user selects any protocol according to needs, an interface program automatically completes message conversion, and other protocols can be conveniently expanded through a reserved interface.
The communication interface box has a configurable numerical calculation function in order to solve the problem that the simulation side variable is not matched with the external equipment variable. The user sets in the communication data modeling unit, and the interface program completes corresponding numerical calculation according to the communication scheme file.
The invention is further illustrated by the following examples:
the interface device comprises a communication interface box and a communication data modeling unit;
the communication interface box includes: the communication data modeling unit analyzes external equipment variables and simulation system variables by reading user configuration files and establishes a communication data composite model based on the external variables, the simulation variables and the communication variables.
The hardware of the communication interface box adopts goods shelf type server commodities, the hardware equipment carries out compatibility test when selecting types, each communication interface box is connected to different servers of the electric power all-digital real-time simulation system through 2 paths of optical fibers (SFP), two different types of data, namely electromechanical transient data and electromagnetic transient data are interacted respectively, each communication interface box is connected with external equipment through 4 paths of gigabit Ethernet interfaces, and various different protocols can be selected to interact data externally.
Communication interface software of a communication interface box adopts a unified global communication interface, is compatible with a fast Ethernet and an optical fiber communication technology, organizes data in a modularization and object-oriented mode, supports fast switching of scheme data, and fast completes numerical calculation, designs a global communication protocol interface, completes interconversion between protocols, can conveniently expand other communication protocols, designs a multi-box multi-channel management strategy, supports flexible combination of a plurality of devices or channels, meets the requirements of simultaneously connecting a plurality of devices and simultaneously transmitting universal communication variables, adopts a distributed real-time database technology, accelerates the numerical calculation speed, improves the communication efficiency, and supports numerical calculation and communication interaction of large-scale communication variables.
The communication data modeling unit uses a graphical WINDOWS interactive interface, all operations are completed through the interface, communication data are managed in a scheme mode, the data scheme is supported to be disassembled, combined and reused, the convenience and the usability of software are improved, the multi-interface multi-channel unified configuration function is achieved, an independent page is designed to be pulled down to complete the setting of all channels, a potential communication data guide type generation model base is supported, the intelligent modeling of the communication data scheme is completed, and in the communication process, the functions of message display, manual debugging and the like can be selected to be opened or closed.
Each communication interface box is connected with the digital real-time simulation system of the power system by adopting 2 paths of optical fibers to respectively transmit electromechanical transient data and electromagnetic transient data, the total transmission rate can reach 5Gbps/s, the communication interfaces are connected with external equipment by a gigabit Ethernet, an IEC104 protocol, a data transmission protocol (GB/T26865.2-2011) of a real-time dynamic detection system of the power system and a Modbus/TCP protocol are supported, other protocols can be conveniently expanded by reserving interfaces, and the interconnection with different protocol types of equipment can be realized only by modifying protocol configuration.
A multi-interface box multi-channel management strategy is designed, each interface box is provided with 4 external Ethernet interfaces, the number of transmitted analog data can reach more than 10 ten thousand, the 4 communication interface boxes are allowed to run in parallel, the four communication interfaces are external, 16 gigabit network ports are totally formed, a transmission data protocol of each port can be independently set, and the maximum access to 16 devices with different protocols is supported.
By means of the communication data modeling unit, a user can complete wizard generation of a communication database and intelligent modeling of a communication data scheme on a graphical interface, modeling software can analyze variables of external equipment and variables of a simulation system by reading a user configuration file, and can establish a communication data composite model based on the external variables, the simulation variables and the communication variables, meanwhile, the communication data modeling software also has the functions of data scheme management, channel and transmission protocol configuration, multi-box multi-port configuration, message display and debugging functions and the like, and the usability of a communication interface is greatly improved.
After the communication data modeling software completes configuration, the communication calculation software automatically analyzes information such as a communication data model, protocol configuration and the like, performs various numerical calculations and protocol conversions in real time, and completes synchronous receiving and sending of data, the software adopts a distributed real-time database technology, the transmission quantity reaches 10 ten thousand points, and the communication delay is less than 10 milliseconds.
According to the data interaction requirements of the digital real-time simulation system of the power system and external equipment, a communication data composite model based on external variables, simulation variables and communication variables is established by utilizing communication data modeling software, and channels and communication protocols are configured, so that the simulation system is automatically connected with communication connection equipment through an IEC104 communication protocol, a data transmission protocol (GB/T26865.2-2011) of a real-time dynamic detection system of the power system, a Modbus/Tcp communication protocol or other protocols, and is plugged and used, and closed-loop simulation of the simulation system and various communication connection equipment is realized.
The present invention also provides a method for closed-loop simulation of an electrical power system, as shown in fig. 2, including:
reading a communication configuration file of an external device or system to be tested, analyzing and acquiring a communication variable of the external device;
defining a simulation side variable according to the type of the external equipment/system;
defining a numerical calculation relation between an external equipment communication variable and a simulation side variable;
intelligently matching the communication variables of the external equipment with the variables of the simulation side, establishing a communication data composite model library, selecting a communication data composite model to generate a communication scheme, and determining an actual communication variable set by the communication scheme;
according to the communication scheme, the communication interface box receives the simulation system data, performs message format conversion and numerical value calculation on the data, and forwards the data to the connected equipment to be tested;
meanwhile, data sent by the equipment to be tested is received, is transmitted to a simulation system of the power system after being subjected to message format conversion, and intervenes in the real-time power simulation process.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. The scheme in the embodiment of the application can be implemented by adopting various computer languages, such as object-oriented programming language Java and transliterated scripting language JavaScript.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (11)
1. A communication interface apparatus for power system closed loop simulation, the apparatus comprising:
the communication data modeling unit is used for finishing communication data modeling and communication scheme management, and specifically comprises:
reading a configuration file of external equipment and analyzing the file, acquiring a variable to be communicated of the equipment to be tested, defining a simulation side variable and a communication link, intelligently matching the external variable and the simulation side variable, establishing a communication data composite model library, and selecting a part of communication data composite models to form a communication scheme file;
the communication scheme file is used by a communication interface box;
the communication interface box is used for completing message format conversion between numerical calculation and multiple communication protocols, and specifically comprises:
receiving data of the power simulation server, performing numerical calculation and message format conversion on the data according to user settings in the communication scheme file, sending the data to external equipment, receiving a control instruction of the external equipment, sending the control instruction to the simulation server after protocol conversion, and intervening in the power simulation process, thereby realizing closed-loop simulation of the power simulation device and the external equipment.
2. The apparatus according to claim 1, wherein the communication data modeling unit defines simulation-side variables, reads and parses external device configuration files, performs wizard-like intelligent matching on the simulation-side data and the device-side communication data according to partitions, stations, and device names, generates a communication composite model, forms a communication scheme, and manages a plurality of schemes.
3. The apparatus of claim 1, wherein the communication data modeling unit is configured to configure the communication interface, and includes setting a port protocol, an IP and a port number of a connected device, a communication interval, and a start threshold.
4. The apparatus of claim 1, wherein the communication data modeling unit supports a user to perform numerical calculation setting on data of a certain channel or a certain type of variable on an interface.
5. The apparatus of claim 1, the communication data modeling unit, comprising a single human-machine interface for message numerical display and manual debugging in a closed-loop simulation process.
6. The apparatus of claim 1, the communication interface box, comprising:
the hardware equipment adopts a shelf type server and is provided with a LINUX operating system;
and the communication interface module is developed based on the LINUX system, designs a global universal interface, is compatible with various communication protocols of optical fibers and Ethernet, and performs numerical calculation and message format conversion on communication data.
7. The device of claim 1, wherein each communication interface box is connected to the power simulation system server through 2 optical fibers, and the 2 optical fibers respectively transmit data of the electromechanical transient simulation and the electromagnetic transient simulation, and support simultaneous transmission of two types of data or transmission of only one type of data.
8. The device of claim 1, wherein each communication interface box is connected to the device to be tested through 4 paths of gigabit ethernet interfaces, supports multiple connections to the same device or different devices, and transmits analog data over 10 ten thousand simultaneously; and when the data volume is larger, the parallel synchronous operation of at most 4 interface boxes is supported.
9. The device of claim 1, wherein the communication interface box is designed with a unified global communication interface, and is compatible with IEC104 protocol, data transmission protocol of real-time dynamic detection system of power system, and Modbus/TCP protocol, and a user selects any one of the protocols as required, and the interface program automatically performs message conversion, and can conveniently extend other protocols through the reserved interface.
10. The apparatus of claim 1, wherein the communication interface box is configured to perform configurable numerical computation to solve the problem of mismatch between the simulation-side variable and the external device variable. The user sets in the communication data modeling unit, and the interface program completes corresponding numerical calculation according to the communication scheme file.
11. A method for closed loop simulation of a power system, the method comprising:
reading a communication configuration file of an external device or system to be tested, analyzing and acquiring a communication variable of the external device;
defining a simulation side variable according to the type of the external equipment/system;
defining a numerical calculation relation between an external equipment communication variable and a simulation side variable;
intelligently matching the communication variables of the external equipment with the variables of the simulation side, establishing a communication data composite model library, selecting a communication data composite model to generate a communication scheme, and determining an actual communication variable set by the communication scheme;
according to the communication scheme, the communication interface box receives the simulation system data, performs message format conversion and numerical value calculation on the data, and forwards the data to the connected equipment to be tested;
meanwhile, data sent by the equipment to be tested is received, is transmitted to a simulation system of the power system after being subjected to message format conversion, and intervenes in the real-time power simulation process.
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