KR101658129B1 - Script editor for gateway apparatus supporting the connection of electric power devices - Google Patents

Abstract

The present invention relates to a gateway apparatus for supporting an IED having a MODBUS communication function to be connected to an IEC61850 network as a server. The present invention relates to a script editor of the gateway apparatus including a user interface (UI) software being capable of performing data conversion via a script, having a memory space for conversion, having a function of controlling data conversion and packet operations by designating an event ID, directly reading an IED configuration description (ICD) file or a configured IED description (CID) file written in a substation configuration description language (SCL), and being capable of performing reading/writing connection between IEC61850 data and MODBUS data. The UI program includes a script editor supporting script writing and revising in order to perform data type conversion of IEC61850 and MODBUS via a script program. According to the present invention, an additional memory operation to perform the data type conversion from data received from the MODBUS into the IEC61850 data, and a memory operation for data received from the IEC61850 are performed with a conversion work via the script program. Thereby, a user can save time and resources.

Description

[0001] The present invention relates to a script editor for a gateway device,

The present invention relates to a script editor that is applied to a gateway device that supports an IED (intelligent electronic device) having a MODBUS communication function to be connected as a server on an IEC61850 network.

IEC61850, which was created to standardize communication between power automation devices, has been expanding its application field. However, many electric power devices currently in use in Korea have not yet supported IEC61850 itself. IEC61850 is a substation automation communication protocol that proposes a standardized data model for communication and control of substation systems.

MODBUS is an industrial protocol developed in 1979 for communication between automation devices. MODBUS was originally an application layer protocol designed for serial communications, but it has been increasingly used to implement serial, TCP / IP and UDP. Currently MODBUS is a commonly used protocol for simple, stable and efficient communication in various modern networks.

Gateway devices are known that support IEDs with MODBUS communication capabilities to be connected as servers on the IEC61850 network. However, they do not support the conversion of various protocols such as MODBUS, CAN, and SPI to IEC61850, and when IEC61850 is applied, manufacturers or communication data definition methods in the substation system are different, mutual communication is impossible and the flexibility or resilience of the system low.

Registration number 10-1082522 Notification date November 10, 2011 Registration number 10-1327398 Notification date November 8, 2013

We propose a gateway device that supports IED (intelligent electronic device) with MODBUS communication function so that it can be connected as a server on IEC61850 network without any modification work so that time and resources can be saved through application of IEC61850 quickly do.

In order to solve the above-described problems, the applicant of the present invention has proposed a gateway device for supporting an IED having a MODBUS communication function to be connected as a server on an IEC61850 network, the gateway device comprising: (1) an IED configuration description) or CID (configured IED description) file. (2) We developed user interface (UI) software that enables read / write connection between IEC61850 data and MODBUS data.

More specifically, the gateway device of the present invention is a storage space for data type conversion of IEC61850 data and MODBUS, and includes an additional memory for storing both data received from MODBUS and data requested to be written from IEC61850, And a user interface (UI) program for control. The additional memory of the present invention is required as a storage space for type conversion of IEC61850 data and MODBUS data and is used not only for the purpose of storing data of MODBUS communication and IEC61850 communication but also for providing flexibility of programming through script It is an added part.

Also, the UI program includes a script editor for supporting script creation and modification for performing data type conversion of IEC61850 and MODBUS by a script program. In this configuration, the operation of the additional memory to perform the type conversion of the data received from MODBUS into IEC61850 data and the memory operation for the data received from IEC61850 are performed together with the conversion operation by the script program.

The Script program language may use the Lua language, but is not limited thereto.

The UI program may further include a channel setting window for setting a channel through which a MODBUS communication packet is transmitted. The channel setting window may include a P2P delay setting means for setting a delay time value between a continuously transmitted packet and a packet can do.

The features of the present invention described above will become clearer through the construction and operation of the embodiments described in detail below with reference to the drawings.

The gateway device of the present invention can convert various protocols such as MODBUS, CAN, and SPI into the IEC61850 type without changing existing facilities. With IEC61850, different manufacturers or product models of the facilities in the substation system can communicate with each other and have a significant advantage in maintenance by acquiring mutual compatibility between the facilities. In conclusion, compared with the conventional method of selecting from among the predefined data types, the present invention can give the user a lot of flexibility in data conversion and control through the script interpreting function and the editing function.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a location of a gateway device according to the present invention on an IEC61850 network.
2 is an exemplary configuration of a panel of the gateway device 10 according to the present invention.
3 shows a screen of a user interface (UI) program for controlling functions of the gateway device 10 according to the present invention
Fig. 4 shows a setting window among function menus of the UI program of the gateway apparatus according to the present invention.
5 shows a memory operation when data is received by the MODBUS packet
6 shows a UI screen of the script editor
7 is a block diagram of a data conversion script
Figure 8 shows an example of a UINT32 to FLOAT32 conversion script
Figure 9 is an example of a script that converts certain bits to Boolean data (Boolean)
10 shows a UI screen

1 shows a location of a gateway device on an IEC61850 network according to an embodiment of the present invention. The gateway device 10 of the present invention is connected as a single server which is one IED on the IEC61850 network 20. [ The MODBUS-enabled IEDs 50 that are located at the same level as the other IEDs 30 supporting IEC61850 and connected to the gateway device 10 by the MODBUS 40 are connected to the IEC61850 network 20 via a single IED 30, Lt; / RTI > MODBUS communication connection is connected to RS485.

2 shows one example of the configuration of a panel of the gateway device 10 according to an embodiment of the present invention. The interface with the external environment and the interface with the user are provided for the connection structure shown in FIG. In Fig. 2, the left part shows the panel part and the right part shows the explanation of each part of the left panel part.

FIG. 3 shows an exemplary screen of a user interface (UI) program for controlling the function of the gateway device 10 according to the present invention. The structure of the program screen of FIG. 3 is similar to those used in conventional gateways, and can be designed in various forms as needed by those skilled in the art. You can see that the upper function menu of program screen has file, edit, create, setup, view, help function. The detailed functions of each of these menus are illustrated in the table below.

These functions are similar to those used in conventional gateway devices. However, in the gateway device of the present invention, a new and unique function (hereinafter referred to as " setting function of the present invention ") unique to the present invention is added to the setting menu.

Fig. 4 shows a setting window among function menus of the UI program of the gateway apparatus according to the present invention. The setting window of FIG. 4 is a screen for configuring the connection between IEC61850 data and MODBUS data. The left side is a list of all sub items displayed in the tree view, and the right side is a list for setting the connection of the MODBUS data. Select the item you want to add from the list on the left and select the 'Add' or 'Add All' button to add the item to the list on the right. Select the item on the right and select 'Delete' or 'Delete All' button to delete the item from the list on the right. The list on the left is the configuration read from the CID (or ICD) file, which is an IED configuration file, so it can not be modified and the list on the right can modify the Memory, Event ID, and Script Name items. The meanings of the items in the right list are as follows.

Each of the menus listed at the top of the setting window shown in FIG. 4 includes IEC61850 information, Modbus Packet Editor, Script Editor, Channel Settings, Device Configuration, to be. Among these functions, the 'script editor' which is a feature of the present invention will be described in detail below.

First, the gateway device of the present invention requires additional memory as storage space for data conversion of IEC61850 data and MODBUS. Additional memory is added to provide programming flexibility through scripting, not just to store data for MODBUS communications and IEC61850 communications.

In one embodiment, the same 16-bit unit address as MODBUS is added to this memory, and the address is assigned to 0 ~ 65535. The data received from MODBUS and the data requested to be written from IEC61850 are stored, so that the flexibility of data is increased and the data type conversion is performed through a script. More on Scripting will be explained later.

The operation of this additional memory will be described by way of example. 5 shows a memory operation when data is received by a MODBUS packet having the same settings as the items in the following table.

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That is, the data received by the request of MODBUS is stored in the memory space starting from the designated address, and this data is again used as the data of each IEC 61850. However, the conversion from memory to IEC61850 data is not a simple copy, but a conversion operation is performed through a script. Similarly, the memory operation for data received from IEC 61850 operates in the opposite direction to the memory operation entry for data received from the MODBUS. The conversion of the script proceeds as IEC61850 data is copied to memory.

6 shows a UI screen of a script editor.

Before describing the script editor, let's talk about scripts first. Since MODBUS often defines the actual data type by the manufacturer, it is necessary to apply the data conversion method applicable to various situations in order to connect various IEDs. In order to cope with such a problem, the gateway device of the present invention incorporates a script editing function and is applied to data conversion. Data conversion scripts can be written in Lua syntax, a scripting language. The data conversion script used in the gateway device of the present invention has the basic structure as shown in FIG.

The meanings of the respective lines in the script of Fig. 7 are shown in the following table.

The actual example of the script will be explained. FIG. 8 shows an example of a script for converting unsigned integer data UINT32 to real data FLOAT32, and FIG. 9 shows an example of a script for converting a specific bit into Boolean data (Boolean).

The data stored as an integer value such as UINT32 is converted into FLOAT32, which is a real number type, by the script of Fig. This example is an example of when the stored integer data is 10 times the actual value. That is, an actual value 123.4 is multiplied by 10, and the UINT32 data stored as an integer value of 1234 is converted into a FLOAT32 real value of 123.4. In FIG. 8, the state of a specific bit of 16-bit data, which is the basis of MODBUS, is converted into a Boolean of IEC61850.

Returning to FIG. 6, the script editor supports creation and modification of a script program for type conversion of IEC61850 and MODBUS. Since the MODBUS data has various data representation methods depending on the manufacturer of the related apparatus, the gateway apparatus of the present invention adds a data conversion function by script in response to this problem. As mentioned above, Script language can be applied to Lua, and this editor can be configured in various ways such as Endian conversion, conversion to integer type, and so on.

In one embodiment, an example of the operation of the editor shown in Fig. 6 will be described with the function of the lower button as shown in the following table. Like the normal Notepad, the Script Editor window can be implemented with functions such as undo, cut, copy, paste, delete, and select all.

Claims (2)

delete A gateway apparatus for supporting an IED having a MODBUS communication function to be connected as a server on an IEC61850 network, the gateway apparatus comprising:
Storage space for type conversion of IEC61850 data and MODBUS data, wherein the additional memory stores both data received from MODBUS and data requested to be written from IEC61850;
A means for interpreting the data type conversion of IEC61850 and MODBUS by interpreting a separately input script program;
A user interface (UI) program for controlling the function of said gateway device and including a script editor for supporting creation and modification of said script program for performing data type conversion of IEC61850 and MODBUS,
Performing a conversion of the data type received from the MODBUS of the additional memory to the IEC61850 data type and a memory operation for the data received from the IEC61850 are performed together with the conversion operation by the data type conversion script program,
In the memory operation of the additional memory, the data received from the MODBUS is stored in the memory space starting at the designated address, and the memory operation of the data received from the IEC 61850 is performed in the opposite direction to the memory operation for the data received from the MODBUS Wherein the script editor of the power device connection support gateway device comprises:

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