KR101971031B1 - Apparatus and method for dynamic performance test of digital protection relay - Google Patents

Abstract

The present invention relates to an apparatus for automating a protection relay dynamic characteristic test, and to a method thereof. More specifically, the apparatus for automating a protection relay dynamic characteristic test capable of receiving characteristics of each system of the protection relays, selecting types of failures (short-circuit failure, ground failure, synchronous phase-out, generator unbalance, etc.) which can be occurred in accordance with a target system, generating and transmitting an arbitrary failure signal to the protection relay, and performing a dynamic characteristic test by analyzing a generated operation signal in real time.

Description

Technical Field [0001] The present invention relates to an apparatus and method for dynamic test of protection relays,

[0001] The present invention relates to an apparatus and method for testing a dynamic characteristic of a protective relay, and more particularly, to a system and method for testing a dynamic range of a protective relay, , Generator unbalance, etc.) to generate an arbitrary fault signal, transmit the fault signal to the protection relay, analyze the generated operation signal in real time, and perform the dynamic characteristic test.

Protection relays, which are devices that 'electrically' monitor and protect major facilities such as power plants and substations, are usually installed in several tens of units, or as many as several hundred units, per main facility. This protection relay protects the equipment by measuring the voltage and current of the main equipment and separating fault detection, shutoff signal, and fault section and protects the equipment from electrical damage (overvoltage, overcurrent, etc.) The breaker is operated to protect the equipment.

Conventionally, in order to check whether the protective relay operates normally (reliability verification), only the static characteristic test is focused on. However, recently, the dynamic characteristics have been emphasized as well as the static characteristic test. However, in the case of the dynamic characteristics test, a professional engineer carries out the protection relay one by one with the equipment directly.

Therefore, not only do they incur huge maintenance costs because they rely entirely on professional engineers, but they can also cause more damage if engineers make mistakes in the process.

In addition, since it is necessary to disclose the internal information necessary for the dynamics test to professional engineers, it also includes the risk of information leakage.

In this regard, the Korean Registered Utility Model No. 20-0257798 (" Device for diagnosing the characteristics of the protection module ") briefly checks whether all relays of various ratings are in normal operation, And a system for diagnosing the characteristics of protective relays that can be systematically managed.

Korean Registered Utility Model No. 20-0257798 (Registered on Dec. 5, 2001)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a fault protection system, Generator imbalance, etc.) to generate an arbitrary fault signal, transmit the fault signal to the protection relay, analyze the generated operation signal in real time, and perform the dynamic characteristic test.

The apparatus for automating the test of dynamic characteristics of a protective relay according to an embodiment of the present invention includes a protection relay 100 and defect testing means 200 communicating with the protection relay 100 for performing a dynamic characteristic test of the protection relay 100 And a signal generator 300 connected to the protection relay 100 and communicating with the defect testing means 200 to transmit a test signal to the protection relay 100 under the control of the defect testing means 200 ).

The defect testing means 200 may further include a first communication unit 210 for communicating with the protection relay 100. The protection relay 100 may be connected to the first communication unit 210, It is preferable that the protection relay 100 transmits the stored characteristic information to the defect testing means 200 when the defect testing means 200 is connected to the defect testing means 200 for the first time.

The defect testing means 200 further includes a signal generator 220 for generating a test signal based on the fault information matched using the characteristic information of the protection relay 100 received by the first communication unit 210, And a DB unit 230 for storing and managing failure information that may occur in each of the protection relays in a database and storing and managing the transferred characteristic information in a database for each protection relay, The signal generator 220 preferably uses the fault information stored and managed by the DB unit 230. [

The defect testing means 200 further includes a second communication unit 240 for communicating with the signal generator 300. The signal generator 300 may be connected to the second communication unit 240, And transmits the test signal generated by the signal generating unit 220 to the signal generator 300 through the second communication unit 240. The signal generator 300 generates the test signal It is preferable that a voltage or current signal is generated according to a test signal and is applied to the protection relay 100.

Further, the defect testing means 200 may further include an analysis unit 250 for analyzing an operation signal transmitted from the protection relay 100. The analysis unit 250 may include a protection relay 100, And receives the operation signal generated by the test signal through the first communication unit 210 and analyzes the dynamic signal with the test signal to analyze the dynamic characteristics of the protection relay 100, .

Further, the DB unit 230 stores and manages the test signal generated by the signal generation unit 220 in a database, and converts the analyzed result information and analysis report into a database It is preferable that at least one of the failure information, the characteristic information, the test signal, the result information, and the analysis report, which is stored and managed according to an external request, is transmitted.

A method for automating the dynamic characteristics test of a protective relay according to an embodiment of the present invention includes a connection determining step (S100) for determining a communication connection between a protection relay and a defect testing means, and a defect determination step (S100) A characteristic information input step (S200) of inputting pre-stored characteristic information from the protection relay when the protection relay is connected to the characteristic relay device, A test signal generation step (S400) of generating a test signal based on the failure information selected by the failure information selection step (S300) in the failure test means (S300), a failure information selection step (S300) of selecting the failure information, In the defect test means, when the test signal generated by the test signal generation step (S400) is transmitted to the signal generator connected to the communication, (S600) of generating a voltage or current signal in accordance with the test signal and applying the voltage or current signal to the signal relay connected to the signal generator (S600). In the protection relay, the test signal (Operation S700) for transmitting an operation signal generated by the operation signal to the defect testing means (S700); and analyzing (S800) performing dynamic characteristic analysis of the protection relay using the received operation signal in the defect testing means As shown in FIG.

Furthermore, it is preferable that the method further comprises a report generating step (S900) of generating an analysis report according to a pre-stored form in the defect testing means after performing the analysis step (S800).

Furthermore, it is preferable that the protective relay and the defect testing means perform IEC 61850 communication.

Furthermore, it is preferable that the defect test means and the signal generator perform TCP / IP communication.

The apparatus and method for the dynamic characteristics test of the protection relay of the present invention having the above-described configuration are characterized in that the characteristics of the respective relays of the protection relays are received and the types of faults that can occur in accordance with the characteristics of the target system and the types of faults Fault occurrence, ground fault, synchronous fault, generator unbalance, etc.) to generate an arbitrary fault signal, transmit the fault signal to the protection relay, analyze the generated operation signal in real time, and perform the dynamic characteristic test.

Especially, if anyone has convenient equipment and basic knowledge, it is possible to carry out the dynamic characteristic test of the protection relay even if it is not a professional engineer, and thus unnecessary cost can be saved.

In addition, since knowledge of a professional engineer is not required, it is possible to conduct a uniform test according to a system operation plan.

In addition, the IEC 61850 communication protocol between the protection relay and the defect testing means enables the connection to be simplified with one LAN cable, and the wiring method can be simplified by using the TCP / IP communication between the defect testing means and the signal generator. And can easily manage connection and management using a LAN cable without having dozens of connection terminals in terms of the external appearance of the protection relay dynamic characteristic test apparatus of the present invention.

FIG. 1 is a block diagram of a device for automating a dynamic characteristic test of a protective relay according to an embodiment of the present invention. Referring to FIG.
FIG. 2 is a diagram showing an apparatus for automating a dynamic characteristic test of a protective relay according to an embodiment of the present invention and a test signal waveform generated in the method.
3 is an exemplary diagram showing an apparatus for automating the test of dynamic characteristics of a protective relay according to an embodiment of the present invention and operation signal data received from a protective relay by the method.
FIG. 4 is a flowchart illustrating a method of automating a dynamic characteristic test of a protection relay according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus and method for automatically testing a dynamic range of a protective relay of the present invention will be described in detail with reference to the accompanying drawings. The following drawings are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention. Therefore, the present invention is not limited to the following drawings, but may be embodied in other forms. In addition, like reference numerals designate like elements throughout the specification.

In this case, unless otherwise defined, technical terms 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. In the following description and the accompanying drawings, A description of known functions and configurations that may unnecessarily obscure the description of the present invention will be omitted.

An apparatus and method for testing dynamic characteristics of a protection relay according to an embodiment of the present invention generates a test signal for testing operation characteristics of a digital protection relay and automatically analyzes the operation of a digital protection relay according to a generated test signal And to a method and a device.

FIG. 1 is a block diagram of an apparatus for automating the test of dynamic characteristics of a protective relay according to an embodiment of the present invention. FIG. 1 is a block diagram illustrating an apparatus for automating a dynamic test of a protective relay according to an embodiment of the present invention.

1, the apparatus for automating the test of dynamic characteristics of a protective relay according to an embodiment of the present invention includes a protective relay 100, a defect testing means 200, and a signal generator 300.

To learn more about each configuration,

The protection relay 100 is a device for electrically monitoring and protecting major facilities such as a power plant and a substation. Generally, the protection relay 100 is installed from several tens to several hundreds.

As described above, in order to judge whether the protection relay 100 operates normally, a professional engineer has carried out the protection relay one by one with the equipment directly, and it is difficult to proceed without the expert engineer's signal analysis know-how It is true. Therefore, in the present invention, it is possible to determine the characteristics of each protection relay 100 through the defect testing means 200 and to control the signal generator 300 to generate an arbitrary test signal, The dynamic characteristics of the protection relay 100 can be analyzed in real time by analyzing the operation signal of the relay 100.

The defect testing means 200 may be a so-called 'DFS (Dynamic Fault Simulator)' and is configured to be connected to the protection relay 100 to perform a dynamic characteristic test of the protection relay 100, The first communication unit 210, the signal generating unit 220, the DB unit 230, the second communication unit 240, and the analysis unit 250, as shown in FIG.

It is preferable that the first communication unit 210 establishes a communication connection with the protection relay 100 and performs IEC 61850 communication with the protection relay 100 through the first communication unit 210.

The protection relay 100 preferably transmits the characteristic information stored in advance to the defect testing means 200 when the defect testing means 200 is connected to the defect testing means 200 for the first time, It is preferable to receive the CT / PT characteristics, the variation ratio, the winding ratio, and the like, and it is possible to match the fault information according to the characteristics of the system using the information.

In addition, the operation signal of the protection relay 100, that is, the operation signal based on the test signal according to the dynamic characteristic test, can be received through the first communication unit 210. This will be described in detail later.

The signal generating unit 220 determines failure information to be matched using the characteristic information of the protection relay 100 received from the first communication unit 210 and performs a test for dynamic characteristics based on the matching failure information Signal can be generated.

At this time, it is preferable that the failure information is inputted to the DB unit 230 in advance, and stored and managed.

FIG. 2 is an exemplary diagram showing the test signal generated by the signal generator 220. The test signal is composed of one set of voltage 3 phases and two sets of current 3 phases. The upper six signals correspond to the current.

In detail, the signal generator 220 matches the failure information stored and managed in the DB unit 230 using the characteristic information of the protection relay 100, and then outputs the matching failure information The test signal for the dynamic characteristic test can be generated as shown in the signal waveforms shown in FIG.

At this time, the short circuit failure is caused by the insulation breakdown, and the overcurrent is generated due to the phenomenon that the line resistance of the electric circuit is extremely low or not at all. The ground fault is a phenomenon in which the insulation part is damaged by the " So that electricity flows to the ground. The synchronous de-coupling is characterized by the fluctuation of the generator condition and instability of the control system, and the generator output and speed vibrate for a certain period of time. The generator unbalance is a condition in which the three-phase voltage does not equilibrate 120 degrees, This may cause wear and lower efficiency of the equipment.

As described above, the DB unit 230 can store and manage the failure information, which may occur for each protection relay, in a database, and can also store the characteristic information received from the protection relay 100 Can be stored and managed in a database for each protection relay of the system.

The second communication unit 240 preferably performs a communication connection with the signal generator 300 and performs TCP / IP communication with the signal generator 300 through the second communication unit 240.

And may transmit the test signals generated by the signal generator 220 to the signal generator 300 through the second communication unit 240.

Accordingly, it is preferable that the signal generator 300 generates a voltage or current signal according to the test signal and applies the voltage or current signal to the protection relay 100.

To this end, the signal generator 300 is connected to the protection relay 100. Specifically, the signal generator 300 is connected to the A, B, C, and N terminals of the voltage output terminal of the signal generator 300, It is preferable to connect the 'PT' of the relay 100 to each phase, and to connect the A, B, C, and N terminals of the current output terminal and 'CT' to each phase.

As described above, the signal generator 300 connected to the protective relay 100 is connected to the defect testing means 200 in a communication manner, and is controlled by the defect testing means 200, It is preferable to transmit the test signal to the controller 100.

In detail, TCP / IP communication with the signal generator 300 is performed through the second communication unit 240 of the defect testing unit 200, and the test signal generated by the signal generating unit 220, . The signal generator 300 generates a voltage or current signal according to the test signal and applies the voltage or current signal to the protection relay 100. At this time, as shown in FIG. 2, it is preferable that the generated test signals are differently generated for each failure type.

The protection relay 100 measures a corresponding data and a fault situation by a voltage or a current signal according to the test signal applied by the signal generator 300 to generate an operation signal, It is preferable to receive the operation signal of the protection relay 100 generated by the test signal using the IEC 61850 communication through the first communication unit 210 of the control unit 200 and to transmit the operation signal to the analysis unit 250 .

In this case, the operation signal generated in the protection relay 100 is preferably received as data as shown in FIG. 3, and is preferably configured in a Comtrade file format. The Comtrade file format is an international standard file format to use when storing waveform signal data (power system data), and generally has a set of dat and cfg.

The analyzer 250 analyzes an operation signal transmitted from the protection relay 100 and analyzes the dynamic characteristics of the protection relay 100 by analyzing the operation signal together with the test signal. In detail, by analyzing the operation signal generated according to the test signal applied to the protection relay 100, it is possible to easily determine whether the protection relay 100 is in a normal state or in an abnormal state And the analyzed data can be generated as an analysis report according to a pre-stored form.

The analysis report generated by the analysis unit 250 is output in real time through a display unit (not shown) provided in the defect testing unit 200 so that an external manager can perform a dynamic characteristic test of the protection relay 100 Can be confirmed quickly.

In addition, the analysis unit 250 may transmit the data to a storage unit (USB or the like) connected through an external input terminal (not shown) formed in the defect testing unit 100 under the control of an external manager, The external manager can confirm the analysis report stored in the storage means through a separate management terminal or manage the analysis report data file.

In detail, the analysis unit 250 analyzes an operation signal transmitted from the protection relay 100, and since the operation signal is transmitted as a digital signal, the thin line is 0 (no signal is generated) , And a thick line is 1 (a signal is generated). Table 1 below is a representative embodiment of the operation state of the protection relay 100 transmitted by the operation signal.

Operation type Explanation 87
(Current differential relay) If the difference between the total current flowing into the protective equipment and the total current flowing out is above a certain value, 50
(Instantaneous overcurrent relay) When the magnitude of the current becomes equal to or greater than a predetermined value,
Detects faults such as ground fault (instantaneous means operation immediately after occurrence) 51
(Relay type overcurrent relay) When the magnitude of the current becomes equal to or greater than a predetermined value,
Detects faults such as ground fault (one hour means operation after waiting a certain time after occurrence) 59
(Overvoltage relay) When the magnitude of the voltage becomes equal to or greater than a predetermined value, 27
(Undervoltage relay) When the magnitude of the voltage becomes less than a predetermined value,

In addition, the analysis report generated by the analysis unit 250 may include protection relay information, failure type information, protection relay operation / status information according to normal operation, applied test signal waveform information, It is preferable to include the received operation signal data information and the like, and may be different depending on the form.

In addition, the DB unit 230 not only stores and manages the test signal generated by the signal generation unit 220 in a database, but also analyzes the operation signal in the analysis unit 250, It is desirable to store and manage one analysis report in a database for each protection relay. In addition, by transmitting at least one of the failure information, characteristic information, test signal, result information, and analysis report stored and managed according to an external request, any one of the defect testing means 200 And the signal generator 300 are connected to the protection relay 100, the dynamic characteristics test of the protection relay 100 can be easily performed and the result can be confirmed.

FIG. 4 is a flowchart illustrating a method of automating a dynamic characteristic test of a protective relay in accordance with an embodiment of the present invention. Referring to FIG. 4, a method of automating a dynamic characteristic test of a protective relay according to an embodiment of the present invention will be described in detail.

As shown in FIG. 4, the automation method of the protection relay according to an exemplary embodiment of the present invention includes a connection determination step S100, a characteristic information input step S200, a failure information selection step S300, (Step S400), a test signal transmission step S500, a test signal application step S600, an operation signal reception step S700, and an analysis step S800.

To learn more about each action,

The connection determining step S100 is a step of determining connection of communication between the protection relay 100 and the defect testing means 200. The connection determining step S100 may be performed by the protection relay 200 through the first communication unit 210 of the defect testing means 200, 100, and preferably performs IEC 61850 communication.

The characteristic information input step S200 may be performed by the defect testing means 200 when the protection relay 100 is connected to the protection relay 100 by the connection determination step S100, The characteristic information stored in advance is received from the controller 100. That is, it is preferable to transmit the characteristic information stored in advance in the protection relay 100 to the defect testing means 200. The characteristic information includes information on the characteristics of the protection relay 100 and the system, CT / PT characteristics, variable ratio, winding ratio, and the like, and it is possible to match failure information matching the characteristics of the system.

In the failure information selection step S300, the failure test means 200 selects the failure information matching the characteristic information among the failure information stored in advance using the characteristic information of the input protection relay 100 desirable.

In detail, the signal generator 220 of the defect testing means 200 can determine fault information to be matched by using the characteristic information of the protection relay 100 received by the first communication unit 210 And the failure information may be stored in the DB unit 230 and may be stored and managed in advance by receiving the failure CASE information generated for each protection relay.

In the test signal generation step S400, the defect testing means 200 may generate the test signal based on the failure information selected by the failure information selection step S300. That is, the signal generator 220 of the defect testing unit 200 can generate a test signal for the dynamic characteristic test based on the matched fault information.

FIG. 2 is an exemplary diagram showing the test signal generated by the signal generator 220. The test signal is composed of one set of voltage 3 phases and two sets of current 3 phases. The upper six signals correspond to the current.

In detail, the signal generator 220 matches the failure information stored and managed in the DB unit 230 using the characteristic information of the protection relay 100, and then outputs the matching failure information The test signal for the dynamic characteristic test can be generated as shown in the signal waveforms shown in FIG.

At this time, the short circuit failure is caused by the insulation breakdown, and the overcurrent is generated due to the phenomenon that the line resistance of the electric circuit is extremely low or not at all. The ground fault is a phenomenon in which the insulation part is damaged by the " So that electricity flows to the ground. The synchronous de-coupling is characterized by the fluctuation of the generator condition and instability of the control system, and the generator output and speed vibrate for a certain period of time. The generator unbalance is a condition in which the three-phase voltage does not equilibrate 120 degrees, This may cause wear and lower efficiency of the equipment.

For this, the DB unit 230 can store and manage the failure information that may occur for each protective relay as a database, as well as store and manage the failure information that is generated from the protection relay 100 Information can be stored and managed in a database for each protection relay.

The test signal transmitting step S500 may transmit the test signal generated by the test signal generating step S400 to the signal generator 300 communicatively connected at the defect testing device 200. [ In detail, TCP / IP communication with the signal generator 300 is performed through the second communication unit 240 of the defect testing means 200, and the signal generator 220 May transmit the test signals generated by the signal generator 300 to the signal generator 300.

In the test signal application step S600, the signal generator 300 generates a voltage or current signal according to the test signal and applies the signal to the signal relay 100 connected thereto. To this end, the signal generator 300 is connected to the protection relay 100. Specifically, the signal generator 300 is connected to the A, B, C, and N terminals of the voltage output terminal of the signal generator 300, It is preferable to connect the 'PT' of the relay 100 to each phase, and to connect the A, B, C, and N terminals of the current output terminal and 'CT' to each phase.

The signal generator 300 generates a voltage or current signal according to the test signal and applies the voltage or current signal to the protection relay 100. At this time, as shown in FIG. 2, it is preferable that the generated test signals are differently generated for each failure type.

In the operation signal receiving step S700, it is preferable that, in the protection relay 100, the operation signal generated by the test signal is transmitted to the defect testing means 200. [

In detail, the protection relay 100 measures a corresponding data and a fault situation by a voltage or a current signal according to the test signal applied by the signal generator 300 to generate an operation signal, Receives the operation signal of the protection relay 100 generated by the test signal using the IEC 61850 communication through the first communication unit 210 of the defect testing means 200 and transmits the operation signal to the analysis unit 250 . At this time, it is preferable that the operation signal generated in the protection relay 100 is received as data as shown in FIG.

In the analysis step S800, the defect testing means 200 performs the dynamic characteristic analysis of the protection relay 100 using the operation signal received in the operation signal receiving step S600.

That is, the analysis unit 250 of the defect testing unit 200 analyzes the operation signal transmitted from the protection relay 100, and analyzes the operation signal together with the test signal to analyze the dynamic characteristics of the protection relay 100 . In detail, by analyzing the operation signal generated according to the test signal applied to the protection relay 100, it is possible to easily determine whether the protection relay 100 is in a normal state or in an abnormal state have.

In addition, a method of automating the dynamic characteristic test of the protective relay according to an embodiment of the present invention may further include a step S900 of generating a report after performing the analysis step S800 as shown in FIG. .

In the report generating step S900, the defect testing means 200 may generate an analysis report according to a pre-stored form.

That is, in the analysis unit 250 of the defect testing unit 200, not only the operation signal transmitted from the protection relay 100 is analyzed, but also the analyzed data can be generated as an analysis report according to a pre-stored form .

The generated analysis report can be transmitted to the outside and an external manager can check the dynamic characteristics of the protection relay 100 in real time. In addition, the analysis report generated by the analysis unit 250 may include protection relay information, failure type information, protection relay operation / status information according to normal operation, applied test signal waveform information, It is preferable to include the received operation signal data information and the like, and may be different depending on the form.

The analysis report generated by the analysis unit 250 is output in real time through a display unit (not shown) provided in the defect testing unit 200 so that an external manager can perform a dynamic characteristic test of the protection relay 100 Can be confirmed quickly.

In addition, the analysis unit 250 may transmit the data to a storage unit (USB or the like) connected through an external input terminal (not shown) formed in the defect testing unit 100 under the control of an external manager, The external manager can confirm the analysis report stored in the storage means through a separate management terminal or manage the analysis report data file.

The method for automating the test of the protective relay according to an exemplary embodiment of the present invention may further include the steps of determining whether the protective relay 100 and the defect testing means 200 are connected, Or if the characteristic information of the protection relay 100 is not input by the characteristic information input step S200 or if the test signal matched by the test signal generation step S400 is not generated, It is preferable that an operation control signal of an alarm means provided in advance is generated to notify an external manager of abnormality progress of the dynamic characteristic test.

As described above, according to the embodiment of the present invention, the apparatus and method for automatically testing the dynamic characteristics of the protective relay are designed to allow the non-professional engineer to easily carry out the dynamic characteristics test of the protective relay, It is highly desirable to increase the reliability of the dynamic characteristic test not carried out by the professional engineer so that the accuracy of the connection can be somewhat low so that the normal progress can be confirmed through the alarm means.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And various modifications and changes may be made thereto by those skilled in the art to which the present invention pertains.

Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

100: Protection Relay
200: defect test means
210: first communication unit 220:
230: DB unit 240: second communication unit
250: Analytical Department
300: Signal generator

Claims (10)

A protective relay 100;
Stored characteristic information from the protection relay 100 when the protection relay 100 is connected to the protection relay 100 for the first time connection with the protection relay 100, (200) for generating a test signal for the dynamic characteristic test based on the failure information and performing a dynamic characteristic test of the protection relay (100); And
A signal generator 300 connected to the protective relay 100 and communicatively connected to the defect testing means 200 for transferring the test signal to the protection relay 100 under the control of the defect testing means 200, ;
/ RTI >
The defect testing means (200)
A first communication unit 210 for IEC 61850 communication connection for simplifying connection with the protection relay 100;
A signal generating unit 220 for generating a test signal based on fault information that is matched using characteristic information of the protection relay 100 transmitted; And
A second communication unit 240 for establishing a TCP / IP communication with the signal generator 300;
And a control unit for controlling the operation of the protection relays.
delete The method according to claim 1,
The defect testing means (200)
A DB unit 230 for storing and managing failure information that may occur for each protection relay in a database, and storing and managing the transferred characteristic information for each protection relay in a database;
Further comprising:
The signal generating unit 220
And the failure information stored and managed by the DB unit (230) is used.
The method of claim 3,
The defect testing means (200)
Transmits the test signal generated by the signal generator 220 to the signal generator 300 through the second communication unit 240,
Wherein the signal generator (300) generates a voltage or current signal according to the test signal and applies the generated voltage or current signal to the protection relay (100).
5. The method of claim 4,
The defect testing means (200)
An analysis unit 250 for analyzing an operation signal transmitted from the protection relay 100;
Further comprising:
The analysis unit 250
Receives the operation signal generated by the test signal from the protection relay 100 through the first communication unit 210 and analyzes the dynamic signal with the test signal to analyze the dynamic characteristics of the protection relay 100,
And the analysis report is generated according to the pre-stored form.
6. The method of claim 5,
The DB unit 230
The test signal generated by the signal generator 220 is converted into a database and stored and managed.
The result information and analysis report analyzed by the analysis unit 250 are stored in a database and managed,
Characteristic information, a test signal, a result information, and an analysis report stored and managed according to an external request, and transmits the at least one of the failure information, the characteristic information, the test signal, the result information, and the analysis report.
A connection determining step (S100) of determining a communication connection between the protection relay and the defect testing means;
A characteristic information input step (S200) of receiving the pre-stored characteristic information from the protection relay when the defect testing means is initially connected to the protection relay by the connection determination step (S100);
A failure information selection step (S300) of selecting failure information matching with the characteristic information among pre-stored failure information by using the characteristic information of the protection relay inputted in the defect testing means;
A test signal generating step (S400) of generating a test signal based on the failure information selected by the failure information selecting step (S300) in the defect testing means;
A test signal transmitting step (S500) of transmitting the test signal generated by the test signal generating step (S400) to the communicating signal generator in the defect testing means;
A test signal applying step (S500) of generating a voltage or current signal according to the test signal and applying the test signal to the protective relay connected to the signal generator;
An operation signal receiving step (S700) of transmitting, in the protection relay, an operation signal generated by the test signal to the defect testing means; And
An analysis step (S800) of performing dynamic characteristic analysis of the protection relay using the received operation signal in the defect testing means;
And,
The protection relay and the defect testing means perform IEC 61850 communication,
Wherein the defect testing means and the signal generator perform TCP / IP communication.
8. The method of claim 7,
After performing the analysis step S800,
A report generation step (S900) of generating an analysis report according to a pre-stored form in the defect test means;
The method further comprising the step of:
delete delete

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