KR102014643B1 - Test apparatus for intelligent electronic device and testing method of intelligent electronic device using the same - Google Patents

Abstract

A test device of an intelligent electronic device (IED) includes a data processing unit and a communication port. The data processing unit processes test information related to a current value or a voltage value to communicate data with an IED through a network. The test device is connected to the IED and the network through the communication port. The data processing unit includes a digital data generating unit, a format converting unit, a message transmitting unit and a reception information confirming unit. The digital data generating unit generates digital data based on a command from a user including test information. The format converting unit converts digital data into a preset format message. The message transmitting unit transmits the format message to the IED through the network. The reception information confirming unit confirms existence or nonexistence of trip information in a GOOSE message provided from the IED in response to the format message received from the IED. With a test device of the present invention, it is possible to easily test an intelligent electronic device in an environment identical to real situation with relatively low cost.

Description

TEST APPARATUS FOR INTELLIGENT ELECTRONIC DEVICE AND TESTING METHOD OF INTELLIGENT ELECTRONIC DEVICE USING THE SAME}

The present invention relates to a test device for an intelligent electronic device for implementing a substation automation system and a method for testing the intelligent electronic device using the same. More particularly, the present invention is installed in a bus line of a power system to provide an abnormal current or an abnormal voltage to the bus line. The present invention relates to a test device for testing an intelligent electronic device developed to detect and protect a bus, and a method of testing the intelligent electronic device using the same.

A power system for supplying power to a home, factory, or building is implemented by a power plant that produces power, a transmission line that transports power, a substation that converts the power to a required size, and a distribution line that distributes power to each required area. .

Recently, in the field of power systems, integration, automation, and remote monitoring have been promoted to minimize human work. In particular, the substation automation system is a system for monitoring, controlling and protecting various electric power facilities installed in the substation, which is important for automating the complicated and expensive work consumed in the existing substation construction.

1 is a view showing the configuration of a conventional substation automation system.

Referring to FIG. 1, the substation automation system 100 is a system for monitoring, controlling, and protecting various power facilities constituting the substation 10 based on a standard for a communication system for IEC61850 power automation.

The substation automation system 100 includes a merging unit 110, an intelligent electronic device (IED) 130, a user machine interface (HMI) 140, and a process. A process bus 150 and a station bus 160.

Substation 10 is composed of a variety of power equipment to convert the power to the required size. The substation 10 includes a transformer 11, a bus bar 12, a line 13, and a breaker 14. The transformer 11 converts the magnitude of the transmitted voltage, the bus line 12 connects the power transmission line, and the breaker 14 blocks the power flow of the line 13.

The merging unit 110 receives an analog current signal corresponding to the current of various power equipment installed in the substation 10 from the current transformer 20, the merging unit 110 converts the received analog current signal into an analog-to-digital conversion ( analogue to digital conversion to generate current data. The merging unit 110 transmits current data to the IED 130 via the process bus 150.

In addition, the merging unit 120 receives an analog voltage signal corresponding to the voltage of the various power equipment installed in the substation 10 from the voltage transformer 30, the merging unit 120 converts the received analog voltage signal into analog digital Convert to generate voltage data. In addition, the merging unit 120 transmits the voltage data to the IED 130 via the process bus 150.

The IED 130 monitors, controls, and protects various power facilities installed in the substation 10 using current data and voltage data received from the merging unit 110. The IED 130 may determine the current, voltage, and system state of the power equipment installed in the substation 10 from the received current data and voltage data. If the IED 130 determines that the provided current data or voltage data is outside the normal value range, the IED 130 determines that the equipment is in an abnormal state and outputs a trip signal for stopping the operation of the equipment. You can send to the side.

The IED 130 transmits the monitoring data including the current, voltage, and grid state of the power equipment installed in the substation 10 to the HMI 140 through the station bus 160. The HMI 140 provides the user with monitoring data received from the IED 130. The HMI 140 is a device for controlling the IED 130 in order for a user to control various power facilities installed in the substation 10. The HMI 140 transmits a control command input by the user to the IED 130 through a control message.

On the other hand, the operation to apply the above-described IED 130 to the actual application environment is being implemented, but similar to the actual application environment, in order to test the function of the IED 130, a large number of merging unit 110 is required, and moreover It is necessary to build a plurality of voltage / current generating equipment for inputting the actual voltage and current to the merging unit 110 of the. For this reason, it may be expensive to test the IED 130 in an environment similar to the actual application environment.

An object of the present invention is to provide a test device that can more easily test the intelligent electronic device.

Another object of the present invention is to provide a method for simply testing an intelligent electronic device using the above-described test device.

In a test device of an intelligent electronic device (IED), a test device of an intelligent electronic device for achieving the above object of the present invention includes a data processing unit and a communication port.

The data processing unit communicates data with the IED via a network by processing test information associated with a current value or a voltage value. The test device is connected to the IED and the network through the communication port.

The data processing unit includes a digital data generating unit, a format converting unit, a message transmitting unit and a reception information confirming unit. The digital data generator generates digital data based on a user's command including the test information. The format converter converts the digital data into a predetermined format message. The message transmitter transmits the format message to the IED through the network. The reception information confirming unit confirms the presence or absence of trip information in a GOOSE message provided from the IED in response to the format message received from the IED.

In one embodiment of the present invention, the format message may be generated by converting the digital data in the SV (Sampled Value) format by the format converter.

In one embodiment of the present invention, the test device of the IED may further include an information display unit for displaying a data processing state in the data processing unit.

In one embodiment of the present invention, the data processing unit may further include a command processor and a goose message receiver. The command processor receives and confirms a command of the user. The goose message receiver may receive the goose message from the IED through the network.

In one embodiment of the present invention, the information display unit may display whether the trip information is confirmed from the goose message.

In one embodiment of the present invention, the test information includes information related to current values or voltage values divided into a plurality of channels, so that each of the digital data, the format message and the goose message is generated for each of the plurality of channels. Can be.

In an embodiment of the present disclosure, the information display unit may be configured in plural to correspond to the plurality of channels to display a data processing state for each of the plurality of channels.

In one embodiment of the present invention, the information display unit may include a plurality of lamps corresponding one-to-one to the plurality of channels.

In one embodiment of the present invention, the data processing unit may further include a setting unit. The setting unit may set activation or deactivation of a data processing task for each of the plurality of channels.

In one embodiment of the present invention, the test information may include information related to 18 current values.

In one embodiment of the present invention, the test information may include information related to two voltage values.

In order to achieve the above object of the present invention, a method of testing an intelligent electronic device (IED) using a test device is as follows.

User commands, including test information related to the current value or the voltage value, are input to the intelligent electronic device via the network. Thereafter, digital data based on the user command is generated. Thereafter, the digital data is converted into a predetermined format message. Thereafter, the format message is provided to the IED side via the network. Thereafter, a Goose message is received from the IED in response to the format message provided to the IED side, and the trip information is confirmed from the received Goose message.

In one embodiment of the present invention, the digital data may be converted in a sampled value (SV) format.

In one embodiment of the present invention, the test information includes information related to current values or voltage values divided into a plurality of channels, wherein each of the digital data, the format message, and the goose message is generated for each of the plurality of channels. Can be.

In an embodiment of the present invention, the information display unit may be configured to correspond one-to-one to the plurality of channels, and the information display unit may display a data processing state for each of the plurality of channels.

According to the present invention, in testing an intelligent electronic device for bus protection, the test device is bulky, expensive power that requires time and space for installation, such as a plurality of merging units, a voltage measuring unit and a current measuring unit. It can easily simulate the environment of testing intelligent electronic devices on behalf of the facility. Therefore, by using the test device according to the present invention, it is possible to easily test the intelligent electronic device in the same environment as the actual situation at a relatively low cost.

In addition, according to the related art, an intelligent electronic device is a product applied to an actual field, and a lot of constraints may be generated in testing the intelligent electronic device in the actual field. However, according to the present invention, since the test device makes it easy to test the intelligent electronic device in an environment similar to a real field, the test device substantially eliminates the constraints generated in testing the intelligent electronic device. The test device may be used to perform more various tests on intelligent electronic devices.

1 is a view showing the configuration of a conventional substation automation system.
2 is a front view of a test apparatus for an IED according to an embodiment of the present invention.
3 is a block diagram illustrating a configuration and a function of a data processing unit of the test apparatus illustrated in FIG. 2.
4 is a flowchart illustrating a process of transmitting an SV message to an IED side according to a user's command in the test apparatus illustrated in FIGS. 2 and 3.
5 is a flowchart illustrating a process of receiving a goose message received from the IED after the SV message transmission of the test apparatus.

Hereinafter, the most preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the technical idea of the present invention. . First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

FIG. 2 is a front view of the test apparatus 300 of the IED according to an embodiment of the present invention, and FIG. 3 is a block for explaining the configuration and function of the data processing unit 400 of the test apparatus 300 shown in FIG. It is also.

2 and 3, the test apparatus 300 generates digital data and an SV message for a current value and a voltage value to be tested, and the test apparatus 300 generates the digital data and the SV message. Provided to the IED (130) side is a device for testing the 154kV busbar protection IED (130). Accordingly, the test apparatus 300 may test the IED 130 in place of the plurality of current merging units 110 or the plurality of voltage merging units 120.

In this embodiment, the test apparatus 300 includes a first communication port 330, a second communication port 340, a USB port 310, information display units 360 and a data processing unit 400.

The first communication port 330 is for connecting the test device 300 to the IED 130 through the process bus 150, in this embodiment the first communication port 330 is a communication to which the RJ-45 standard is applied. It may be a port.

The second communication port 340 is for connecting the test device 300 to the IED 130 through the process bus 150, in this embodiment the second communication port 340 may be a communication port for optical communication. .

The USB port 310 loads external data for operating the test device 300 to the test device 300 or stores data stored in a memory built in the test device 300 in an external memory device (not shown). Used to

The information display units 360 display a state of processing data in the data processing unit 400. In this exemplary embodiment, the information display units 360 may include a total of 18 LED lamps including the LED lamp 361 and the LED lamp 362. Therefore, when test information related to a total of 18 current values divided into a plurality of channels is input to the test apparatus 300, the information display units 36 process the data on a channel-by-channel basis in the data processing unit 400. Display status.

In this embodiment, a power input unit (not shown) for receiving power from the outside is located at the rear of the test apparatus 300, and the power lamp 320 indicates whether power is supplied from the outside through the power input unit. do.

The data processing unit 400 receives test information for testing the IED 130, such as a current value or a voltage value, and the data processing unit 400 generates and processes data in response to the input test information to generate the IED. Communicate with (130).

In this embodiment, the data processing unit 400 includes a user command input unit 410, a command processing unit 420, a digital data generation unit 430, a setting unit 405, and a sampled value (SV) format conversion unit 440. , An SV transmitter 450, a goose message receiver 460, and a reception information checker 470.

The user's command to be tested with respect to the IED 130 is input to the test device 300 through the user command input unit 410. In this embodiment, the user's command stored in the USB storage device inserted into the USB port 310 may be input to the test device 300 through the command input unit 410.

In this embodiment, the user's command may include information related to the current value for testing the IED 130. More specifically, the user's command may include information for testing current values of up to 18 channels for the IED 130.

In another embodiment, the user's command may include information related to a voltage value for testing the IED 130. More specifically, the user's command may include information for testing two voltage values to test the IED 130 virtually installed in the double bus.

The command processor 420 checks and processes a user's command input to the user command input unit 410, and the digital data generator 430 receives a user received and processed by the user command input unit 410 and the command processor 420. Convert the command to digital data.

In this embodiment, when the user's command includes 18 current values (A, B, C, N phases) that are distinguished from each other, the digital data generator 430 may perform digital data for each of the 18 current sets. Create

In another embodiment, when the user command received and confirmed by the user command input unit 410 and the command processing unit 420 includes two voltage values, the digital data generator 430 may apply to each of the two voltage values. Digital data can be generated.

The setting unit 405 may set activation or deactivation for data processing for each of a plurality of channels in the data processing unit 400. In this embodiment, the setting unit 405 may enable / disable each of the 18 current values. Can be set. In another embodiment, the setting unit 405 may set the magnitude of the signal of the digital data generated by the digital data generating unit 430.

The SV format converter 440 converts the digital data generated by the digital data generator 430 into an SV message formatted in a SV (sampled value) format. That is, the SV format converter 440 converts a digital signal generated in the test apparatus 300 into a predetermined format in order to communicate with the IED 130. Therefore, the test apparatus 300 may communicate with the test apparatus 300 and the IED 130 by using the SV message converted by the SV format converter 440.

The SV transmitter 450 transmits the SV message converted by the SV format converter 440 to the IED 130. In this embodiment, the SV message may be transmitted to the IED 130 through the first communication port 330 having the RJ-45 standard and the process bus 150 connected thereto.

Meanwhile, as described above, when the SV message is transmitted to the IED 130, the IED 130 receives the SV message. In addition, the IED 130 generates a goose (generic object oriented substation event, GOOSE) message in response to the received SV message and transmits it to the goose message receiver 460.

The reception information confirming unit 470 confirms whether the goose message received by the goose message receiving unit 460 includes trip information. For example, when the test information input to the user command input unit 410 includes an abnormal current value, and corresponding to trip information is included in the goose message transmitted from the IED 130, the corresponding information of the IED 130 is applied. It may be determined that the function is normal.

The information display unit 360 displays the result confirmed by the reception information confirming unit 470. For example, in an exemplary embodiment, when trip information included in channel 3 and channel 6 is included in the goose message confirmed by the reception information checking unit 470, the LED lamp arranged in the information display unit 360 for the third time. The color of the 361 and the sixth arranged LED lamps 362 may be turned on with a predetermined color. In another embodiment, the colors of the LED lamps 361 arranged in the information display unit 360 and the LED lamps 362 arranged in the sixth light are turned on by a predetermined different color, and the received information checking unit 470 confirms the colors. The goose message may notify the circuit breaker (circuit breaker) of the actuation state on the line corresponding to the channel 3 and channel 6.

4 is a flowchart illustrating a process of transmitting an SV message to an IED side according to a user's command in the test apparatus 500 illustrated in FIGS. 2 and 3.

3 and 4, first, the system of the test apparatus 300 is initialized (S10) and the previously tested record is deleted. Thereafter, a user command is input to the user command input unit 410. As a result, it is checked whether the user command is input in the test device 300 (S20), and the reception of the user command to the test device 300 is completed (S30).

Thereafter, the user command received by the command processor 420 is processed to determine whether the received user command is a start command to transmit an SV message (S40). If the received user command is an SV message transmission start command, the SV message transmission internal flag is treated as '1' (S50), and the user command received by the SV format conversion unit 440 is converted into an SV message. The converted SV message is transmitted to the IED 130 through the SV transmitter 450 (S60). When the transmission of the SV message is completed, the user waits for another command input.

If the received user command is not a start command for transmitting an SV message, it is determined whether the received user command is an SV message transmission stop command (S70). If the received user command is an SV message transmission stop command, the SV message transmission internal flag is reset to '0' to release the SV message transmission internal flag (S80), and the SV message transmission is stopped (S90). When the transmission of the SV message is stopped, the user waits for another command input. Also, when the received user command is not an SV message transmission stop command, the user waits for input of another command.

5 is a flowchart illustrating a process of receiving a goose message received from the IED after the SV message transmission of the test apparatus.

3 and 5, after the test apparatus 500 transmits an SV message to the IED 130, the IED 130 transmits a goose message to the test apparatus 500 in response to the received SV message. do. As a result, the goose message receiving unit 460 of the test device 500 receives the goose message of the IED (130) (S100).

In this embodiment, the goose message generated from the IED 130 is provided to the test device 500 through the process bus 150 and the communication port 330.

Thereafter, the reception information confirming unit 470 analyzes the goose message received from the IED 130 to confirm whether or not the trip information is included in the goose message. If the goose message includes the trip information, the system switches to the trip information reception state (S130) and displays it to the user through the information display unit 360.

6A is a graph illustrating waveforms of current values included in an SV message sent out by a test apparatus according to the present invention, and FIG. 6B is a graph illustrating waveforms of voltage values included in an SV message sent out by a test apparatus.

Referring to FIG. 6A, in order to confirm whether the test apparatus 300 according to the present invention 300 normally operates, after inputting a plurality of current values to the test apparatus for each channel as test information, a plurality of currents After generating each SV message for each of a plurality of channels for the values, the waveform of the current value contained in each SV message is shown.

In addition, referring to FIG. 6B, in order to confirm whether the test apparatus 300 according to the present invention (300 of FIG. 2) operates normally, after a plurality of current values are input to the test apparatus for each channel as test information, After generating each SV message for a plurality of channels for the current values of, the waveform of the voltage value included in each SV message is shown.

In addition, the graphs shown in each of FIGS. 6A and 6B are waveforms of SV messages generated in any one channel, and the graphs may be in a normal sinusoidal state. Therefore, the test apparatus according to the present invention can be seen that the digital value for each channel is generated in the form of an SV message as if each channel is synchronized.

Although a preferred embodiment according to the present invention has been described above, modifications can be made in various forms, and those skilled in the art may make various modifications and modifications without departing from the claims of the present invention. It is understood that it may be practiced.

130: intelligent electronic device (IED) 150: process bus
300: test apparatus 330: first communication port
360: information display unit 405: setting unit
400: data processing unit 410: user command input unit
420: command processor 430: digital data generation unit
440: SV format conversion unit 450: SV message transmission unit
460: goose message receiving unit 470: receiving information confirmation unit
500: test device

Claims (14)

In a test device of an intelligent electronic device (IED),
A data processing unit which processes test information related to current values or voltage values divided by a plurality of channels so as to correspond to a plurality of IEDs, and communicates data with the plurality of IEDs through a network; And
A communication port for connecting with the plurality of IEDs through the network;
The data processing unit,
A digital data generator for generating digital data based on a user's command including the test information;
A format converter for converting the digital data into a predetermined format message;
A message transmitter for transmitting the format message to the plurality of IEDs through the network;
A reception information confirmation unit confirming whether trip information is present in a GOOSE message provided from the IED in response to the format messages received from the plurality of IEDs; And
A setting unit configured to set activation or deactivation of a data processing job for each of the plurality of channels;
And each of the digital data, the format message, and the goose message are generated for each of the plurality of channels. The test apparatus of claim 1, wherein the format message is generated by converting the digital data into a SV (Sampled Value) format by the format converter. The method of claim 1,
An information display unit which displays a data processing state in the data processing unit,
The data processing unit,
A command processor which receives and confirms a command of the user; And
And a goose message receiving unit for receiving the goose message from each of the plurality of IEDs through the network. The test apparatus of claim 3, wherein the information display unit displays whether the trip information is confirmed from the goose message. delete The test apparatus of claim 3, wherein the information display unit is configured in plural to correspond to the plurality of channels to display a data processing state of each of the plurality of channels. The test apparatus of claim 3, wherein the information display unit comprises a plurality of lamps corresponding one to one to the plurality of channels. delete 4. The test apparatus of claim 3, wherein the test information includes information related to 18 current values. 4. The test apparatus of claim 3, wherein the test information includes information related to two voltage values. In a method for testing an intelligent electronic device (IED) using a test device,
Inputting a user command to a test device including test information related to current values or voltage values divided into a plurality of channels so as to correspond to the plurality of IEDs;
Generating digital data based on the user command;
Converting the digital data into a predetermined format message;
Providing the format message to a plurality of IED sides via a network; And
Receiving a GOOSE message from the plurality of IEDs in response to the format messages provided to the plurality of IEDs; And
Confirming trip information from the received goose message,
And each of the digital data, the format message, and the goose message are generated for each of the plurality of channels. The method of claim 11, wherein the digital data is converted into a SV (Sampled Value) format. delete The test method of claim 11, wherein the information display unit is configured to correspond one-to-one to the plurality of channels, and the information display unit displays a data processing state for each of the plurality of channels.

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