KR102369781B1 - Apparatus and method for processing patial dischage event for data standard compatibility - Google Patents

Abstract

The present invention relates to a partial discharge event processing apparatus for data standard compatibility and a method thereof, and the partial discharge event processing apparatus for data standard compatibility according to an embodiment of the present invention diagnoses occurrence of a partial discharge event in a non-standard format a non-standard diagnostic unit for generating partial discharge event data of a format conversion unit for converting the partial discharge event data from a non-standard format to an IEC61850 standard format by adjusting each axis of size, time, and phase in a three-dimensional space; a partial discharge diagnosis unit for diagnosing a partial discharge generated in a power facility based on the converted partial discharge event data of the IEC61850 standard format; and an upper interface unit for generating a logical node SPDC class of the IEC61850 standard according to the diagnosis result and providing it to an upper server based on the IEC61850 standard.

Description

Partial discharge event processing device and method for data standard compatibility

The present invention relates to a partial discharge event processing apparatus and method for data standard compatibility, and specifically, between a non-standard diagnostic unit and a standard diagnostic unit, by providing a standard compatibility function through format conversion of partial discharge event data to the IEC61850 standard To a partial discharge event processing apparatus and method for data standard compatibility for integrated management of partial discharge event data generated by a non-standard diagnostic unit in an upper-level server based on the present invention.

Power facilities such as power plants and substations include a variety of power devices such as generators, gas insulated switchgear, gas insulated transformers, and oil immersed transformers.

When an insulation failure occurs in such power equipment, partial discharge occurs as a precursor to failure. The occurrence of partial discharge in this way means that there is a possibility that the power facility may reach insulation breakdown and ultimately the operation of the entire power facility may be stopped.

Therefore, in the power facility, a diagnosis system is essential for diagnosing the occurrence of partial discharge early and taking appropriate measures to prevent the stop of operation of the power facility due to insulation breakdown.

The partial discharge diagnosis system is a system that allows the user to diagnose whether partial discharge has occurred and the type of partial discharge in a facility in real time through the hardware and analysis system installed in the power facility. provides This partial discharge diagnosis system has been introduced and operated since the early 2000s as an online method for diagnosing the occurrence of partial discharge from electromagnetic waves for predicting and maintaining the failure of the gas insulated switchgear.

Meanwhile, the International Electrotechnical Commission (IEC) has proposed communication standardization in substations in 1995. This is related to substation automation, and the standard number was designated as IEC61850.

Accordingly, the substation communication system is being operated by applying the IEC61850 standard, and the partial discharge diagnosis system is also applying the IEC61850 standard by standardizing the communication protocol and data standard after 2015.

However, the partial discharge diagnosis system can be divided into a case in which a non-standardized method is applied before 2015 and a case in which the IEC61850 standard is applied after 2015. In particular, the old partial discharge diagnosis system before standardization is mainly installed in 765kV substations classified as national important substations or substations linked to power plants. As such, the old partial discharge diagnosis system has different communication protocols and data structures for each manufacturer, so monitoring is possible only at the substation concerned, but it is difficult to perform remote monitoring through the internal network like a standardized system.

In addition, it is difficult to build big data through compatibility with each manufacturer and data collection for older partial discharge diagnostic systems.

Currently, many of KEPCO's outdated partial discharge diagnostic systems are in operation. The data format represents a significant difference from the data of the IEC61850 standard in terms of communication protocol and data standard.

For this, the only alternative is to replace the old partial discharge diagnosis system with a new partial discharge diagnosis system that applies the IEC61850 standard, but it is realistically impossible to collectively replace the old partial discharge diagnosis system in operation in many substations across the country.

Therefore, data compatibility with the new partial discharge diagnostic system to which the IEC61850 standard is applied is essential in order to enhance performance and diagnostic reliability of the old partial discharge diagnostic system.

Korean Patent Publication No. 10-1492579 (Registered on Feb. 5, 2015) Korean Patent Publication No. 10-2007-0121238

An object of the present invention is to provide a standard compatibility function through format conversion of partial discharge event data between a non-standard diagnostic unit and a standard diagnostic unit, thereby integrating and managing partial discharge event data generated by a non-standard diagnostic unit in an upper server based on the IEC61850 standard. To provide a partial discharge event processing apparatus and method for data standard compatibility.

According to an embodiment of the present invention, an apparatus for processing partial discharge events for data standard compatibility includes: a non-standard diagnosis unit configured to generate partial discharge event data in a non-standard format in response to diagnosing occurrence of a partial discharge event; a format conversion unit for converting the partial discharge event data from a non-standard format to an IEC61850 standard format by adjusting each axis of size, time, and phase in a three-dimensional space; a partial discharge diagnosis unit for diagnosing a partial discharge generated in a power facility based on the converted partial discharge event data of the IEC61850 standard format; and an upper interface unit for generating a logical node SPDC class of the IEC61850 standard according to the diagnosis result and providing it to an upper server based on the IEC61850 standard.

The non-standard diagnosis unit may receive sensor data collected from various sensors installed in power facilities through Ethernet and diagnose the occurrence of a partial discharge event.

The format converter may check the partial discharge event data in a non-standard format every predetermined period using a timer.

The partial discharge event data includes an eal file with an eal extension and an evd file with an evd extension, the eal file includes a sensor ID and occurrence time information related to the partial discharge event, and the evd file includes a partial 'Waveform information of electromagnetic waves' related to the cause of the discharge event may be included.

The format converter may obtain a sensor ID and occurrence time information related to a partial discharge event from the eal file extracted from the partial discharge event data.

The format converter may obtain waveform information of an electromagnetic wave related to a partial discharge event from the evd file extracted from the partial discharge event data, and perform adjustment to an IEC61850 standard format.

The format converter may generate a plurality of 'data bundles in units of one second' by matching the information obtained from the eal file and the evd file with each other.

The format converter may configure the generated 'data bundle in units of 1 second' for each sensor.

The format converter may generate the 'one-second data bundle' generated for each sensor as the '1-minute data bundle' of 1-second unit data having the same hour/minute information in the time information.

The non-standard diagnosis unit is located in a non-standard diagnosis unit that is a non-standard-based old partial discharge diagnosis system, and the format conversion unit, the partial discharge diagnosis unit, and the upper interface unit are a standard diagnosis unit that is a new partial discharge diagnosis system based on the IEC61850 standard. can be located in

Each of the non-standard diagnostic unit and the standard diagnostic unit may include first and second event linkages that provide an interface environment for transmission of partial discharge event data in a non-standard format.

A partial discharge event processing method for data standard compatibility according to an embodiment of the present invention includes: generating partial discharge event data in a non-standard format according to diagnosing occurrence of a partial discharge event; converting the partial discharge event data from a non-standard format to an IEC61850 standard format by adjusting each axis of size, time, and phase in a three-dimensional space; diagnosing the partial discharge generated in the power facility based on the converted partial discharge event data of the IEC61850 standard format; and generating a logical node SPDC class of the IEC61850 standard according to the diagnosis result and providing it to an upper server based on the IEC61850 standard.

The converting step may include obtaining a sensor ID and occurrence time information related to the partial discharge event from the eal file extracted from the partial discharge event data.

The converting step may include: obtaining waveform information of an electromagnetic wave related to a partial discharge event from the evd file extracted from the partial discharge event data and performing adjustment to the IEC61850 standard format.

The converting step may include generating a plurality of 'data bundles in units of one second' by matching the information obtained from the eal file and the evd file with each other.

The converting step may include configuring the generated 'data bundle in units of 1 second' for each sensor.

The formatting step may include a step of generating the 'one-second data bundle' generated for each sensor as a '1-minute data bundle' of 1-second data having the same hour/minute information in the time information. there is.

The present invention provides a standard compatibility function through format conversion of partial discharge event data between the non-standard diagnostic unit and the standard diagnostic unit, so that the IEC61850 standard-based upper server can integrate and manage partial discharge event data generated by the non-standard diagnostic unit. there is.

In addition, the present invention can enable IEC61850-based standard compatibility without data loss without replacing the existing non-standard partial discharge online diagnostic system. As a result, the upper server of the IEC61850 standard can utilize the partial discharge event data provided by the existing non-standard partial discharge online diagnosis system.

In addition, the present invention can manage the partial discharge event data provided by the diagnostic systems of various formats and communication methods currently installed and operated nationwide while minimizing the additional budget requirement in the upper server of the IEC61850 standard.

In addition, the present invention can realize the construction of big data in the field of partial discharge at a low cost, and can strengthen the preventive diagnosis activities of national important substations.

In addition, the present invention supports the IEC61850 standard by maintaining the standard diagnostic unit in the field when the existing non-standard partial discharge online diagnostic system is used until the replacement cycle and replacing only the local unit with a product that supports the IEC61850 standard. It can be easily converted to a partial discharge online diagnostic system.

In addition, the present invention can reduce the budget as data is compatible with standard systems and higher-level HMIs without replacement of non-standard diagnostic equipment. For example, although the replacement cost of the 345kV substation online preventive diagnosis system requires approximately 600-700 million won per substation, it can be reduced to approximately 60 million won per substation.

In addition, since the present invention can utilize the existing system when upgrading to the comprehensive preventive diagnosis system, it can be utilized after software upgrade when replacing the preventive diagnosis system.

1 is a view of a partial discharge event processing apparatus for data standard compatibility according to an embodiment of the present invention;
2 is a view showing the format conversion of partial discharge event data;
3 is a diagram illustrating a format conversion process of partial discharge event data in the format conversion unit of FIG. 1;
4A to 4C are diagrams for explaining the format conversion process of FIG. 3 in detail;
5 is a view showing the SPDC class of the logical node of the IEC61850 standard;
6 is a diagram illustrating a partial discharge event processing method for data standard compatibility according to an embodiment of the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shapes of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. Detailed descriptions of well-known functions and configurations determined to unnecessarily obscure the gist of the present invention will be omitted.

1 is a diagram of a partial discharge event processing apparatus for data standard compatibility according to an embodiment of the present invention.

As shown in FIG. 1 , the partial discharge event processing device for data standard compatibility (hereinafter referred to as “partial discharge event processing device”, 100) according to an embodiment of the present invention is a non-standard-based older partial discharge diagnosis system Between the non-standard diagnostic unit 10 and the standard diagnostic unit 20, which is a new partial discharge diagnostic system based on the IEC61850 standard, by providing a standard compatibility function through format conversion of partial discharge event data, the upper server 200 of the IEC61850 standard It enables integrated management of partial discharge event data generated from non-standard-based old partial discharge diagnostic systems.

The partial discharge event processing apparatus 100 includes a non-standard diagnosis unit 110 , a first event linking unit 120 , a second event linking unit 130 , a format conversion unit 140 , a partial discharge diagnosis unit 150 , and an upper interface unit 160 .

The partial discharge event processing apparatus 100 is in charge of a function for standard compatibility between the non-standard diagnostic unit 10 and the standard diagnostic unit 20 , and accordingly components are distributed. That is, the non-standard diagnosis unit 110 and the first event linking unit 120 are disposed in the non-standard diagnosis unit 10 , and the second event linking unit 130 , the format conversion unit 140 , and the partial discharge diagnosis unit 150 . ) and the upper interface unit 160 are disposed in the standard diagnostic unit 20 .

The non-standard diagnosis unit 110 receives sensor data collected from various sensors installed in the power facility 10 through Ethernet and diagnoses whether a partial discharge event occurs. Here, various sensors installed in the power facility 10 may be an ultra-sonic sensor, a high frequency current transformer (HFCT) sensor, a transient earth voltage (TEV) sensor, an ultra high frequency (UHF) sensor, or the like.

As such, when the non-standard diagnosis unit 110 diagnoses that a partial discharge event has occurred, it generates partial discharge event data indicating detection of a partial discharge signal in a non-standard format. On the other hand, when diagnosing that the partial discharge event does not occur, the non-standard diagnosis unit 110 performs the process of diagnosing whether the partial discharge event occurs again as described above.

Here, the case where the partial discharge event data in a non-standard format is the standard of the partial discharge diagnosis system of DMS will be described.

This partial discharge event data is created as a pair of files (eal file and evd file) composed of a combination of 'substation name and date' every day, and is updated and stored in units of 1 second. Specifically, the eal file is a file with an extension of 'eal' such as 'Shin_Gim_PoNov102016.eal', and an evd file is a file with an 'evd' extension such as 'Shin_Gim_PoNov102016.evd'. The eal file contains 'sensor ID' and 'occurrence time information' related to the partial discharge event, and the evd file contains 'electromagnetic wave waveform information (eg, sampling, resolution, frequency, signal size, etc.) related to the cause of the partial discharge event. )' is included.

The first event linker 120 and the second event linker 130 provide an interface environment for transmission of partial discharge event data in a non-standard format between the non-standard diagnostic unit 10 and the standard diagnostic unit 20 .

The first event linker 120 periodically monitors whether the non-standard diagnosis unit 110 generates a pair of files (ie, an eal file and an evd file) that are partial discharge event data in a non-standard format. Here, the first event linker 120 may monitor in units of one minute.

At this time, the first event linker 120 detects the partial discharge event data in the non-standard format generated by the non-standard diagnosis unit 110 and transmits it to the second event linker 130 . Here, the first event linking unit 120 and the second event linking unit 130 communicate through the TCP/IP protocol.

As such, the first event linker 120 connects the non-standard type partial discharge event data generated by the non-standard diagnosis unit 110 to the second event linker 130 through lossless transmission. Thereafter, the second event linker 130 transmits the non-standard type partial discharge event data to the format converter 140 .

The format conversion unit 140 converts the format of the partial discharge event data from a non-standard format to an IEC61850 standard format. Here, as the non-standard format standard, as described above, the standard of the partial discharge diagnosis system of DMS will be described as an example.

First, with reference to Table 1, the data difference based on non-standard and IEC61850 standards is compared and explained.

division non-standard format IEC61850 standard format communication protocol different Conforms to IEC61850 standards sampling 64 128 resolution 50Hz 60Hz scale -75∼-35dBm -55∼0dBm data size data per second 1 minute data

The non-standard diagnosis unit 10 generates data based on non-standards, and the standard diagnosis unit 20 generates data based on the IEC61850 standard. At this time, the electromagnetic wave (ie, partial discharge event data) generated from the power facility is in a three-dimensional space expressed by each axis of size (scale), time (resolution), and phase (sampling) regardless of the data format as shown in FIG. 2 . It can be expressed in synchronization with the period of the system AC signal. 2 is a diagram illustrating format conversion of partial discharge event data.

Specifically, the non-standard diagnostic unit 10 represents the electromagnetic wave generated from the power facility by 'scale of -75 to -35 dBm' on the scale axis, and 'resolution of 50 Hz for 1 second for 1 second' on the time axis, and the phase axis In the non-standard format that 'samples 64 times per cycle of the grid AC signal', the waveform characteristics of electromagnetic waves that appear differently depending on the occurrence of partial discharge and the type of partial discharge are extracted. In this case, the non-standard diagnosis unit 10 generates partial discharge event data including waveform information indicating waveform characteristics of electromagnetic waves in units of 1 second.

Next, the standard diagnostic unit 20 represents the electromagnetic wave generated from the power facility by 'scale of -55 to 0 dBm' on the size axis, and 'resolution of 60 Hz for 1 second for 1 second' on the time axis, and on the phase axis It is the IEC61850 standard format that 'samples 128 times per cycle of the grid AC signal' and extracts the waveform characteristics of electromagnetic waves that appear differently depending on the occurrence of partial discharge and the type of partial discharge. In this case, the standard diagnosis unit 20 generates partial discharge event data including waveform information indicating waveform characteristics of electromagnetic waves in units of one minute.

Due to such a difference, it is difficult for the standard diagnosis unit 20 to immediately recognize the partial discharge event data generated by the non-standard diagnosis unit 10 . Accordingly, the standard diagnosis unit 20 may recognize partial discharge event data in a non-standard format through a standard compatibility process according to format conversion by the partial discharge event processing apparatus 100 .

The format conversion unit 140 performs a standard compatibility process according to format conversion for partial discharge event data in a non-standard format. That is, the format conversion unit 140 converts the format of the partial discharge event data from the non-standard format to the IEC61850 standard format for each axis of size, time, and phase in a three-dimensional space.

Hereinafter, a format conversion process for partial discharge event data in a non-standard format in the format conversion unit 140 will be described in detail with reference to FIG. 3 . 3 is a diagram illustrating a format conversion process of partial discharge event data in the format conversion unit of FIG. 1 .

Referring to FIG. 3 , the format conversion unit 140 maps sensor IDs of sensors installed in the power facility to the database DB of the standard diagnosis unit 20 ( S201 ).

However, the standard diagnosis unit 20 cannot identify the sensor ID included in the partial discharge event data of the non-standard format. This is because the sensor ID included in the partial discharge event data in a non-standard format does not follow the IEC61850 standard.

The standard diagnosis unit 20 identifies the point where the electromagnetic wave (ie, partial discharge event) occurs by checking the number of the channel of the number of the local unit instead of the sensor ID indicating the number of the sensor.

That is, partial discharge event data including waveform information of electromagnetic waves detected by a certain sensor is event data corresponding to a number of channels of a number of local units corresponding to sensor IDs stored in the database of the standard diagnostic unit 20. is saved

Next, the format conversion unit 140 starts a timer for converting the format of the partial discharge event data (S202). Here, the format conversion unit 140 may set 2 minutes as one cycle for format conversion of partial discharge event data.

In addition, the format converter 140 extracts the latest partial discharge event data in conjunction with the second event linker 130 .

First, the format conversion unit 140 checks whether the non-standard format partial discharge event data detected by the second event linker 130 is event data of today's date (S203). At this time, if the format conversion unit 140 is not confirmed as the event data of today's date, it waits until the timer is completed.

In addition, when the format conversion unit 140 is confirmed as the event data of today's date, the occurrence time of the corresponding event data is greater than the 'occurrence time of event data included in the partial discharge event data of the non-standard format for which the format conversion was most recently performed'. It is checked whether it is up to date (S204).

Thereafter, if the format conversion unit 140 is the latest, only the newly generated partial discharge event data is extracted ( S205 ).

Next, the format conversion unit 140 converts the non-standard format of the extracted partial discharge event data into the IEC61850 standard format (S206). A detailed description thereof will be described in detail with reference to FIGS. 4A to 4D, which will be described later.

In this case, the format conversion unit 140 stores the event data converted into the IEC61850 standard format in the database DB of the standard diagnosis unit 20 ( S207 ). At this time, the format conversion unit 140 maps the event data converted to the IEC61850 standard format for each sensor ID.

Thereafter, the format conversion unit 140 checks whether the timer expires (S208). At this time, the format conversion unit 140 returns to the initial step (S202) when the timer expires, otherwise it continues to check whether the timer is terminated (S208).

Here, the timer is used for the purpose of performing format conversion by checking the event data of the non-standard format detected by the second event linker 130 at every predetermined period. In particular, the timer allows the format conversion to be performed without omission along with a reduction in the load of the format conversion unit 140 .

Hereinafter, the format conversion process of step S206 in FIG. 3 will be described in detail with reference to FIGS. 4A to 4C . 4A to 4C are diagrams for explaining the format conversion process of FIG. 3 in detail.

Referring to FIG. 4A , the format converter 140 identifies a pair of files (ie, an eal file and an evd file) from partial discharge event data in a non-standard format.

First, the format conversion unit 140 extracts the eal file from the partial discharge event data in a non-standard format (S211).

Here, the eal file includes a 2-byte field in which the sensor ID of the sensor in which the partial discharge event occurred is recorded, and a 3-byte field in which the occurrence time of the partial discharge event generated by the sensor is recorded. . The occurrence time of the partial discharge event is provided with time information in seconds in the format of hours/minutes/seconds. For example, the sensor ID may be '77', and the occurrence time of the partial discharge event may be '11:21:17'.

Also, in the eal file, a plurality of fields may be continuously formed according to the number of sensors in which a partial discharge event has occurred.

Next, the format conversion unit 140 acquires the sensor ID and the occurrence time information related to the partial discharge event from the eal file (S212). As such, the format conversion unit 140 may acquire all sensor IDs and occurrence time information recorded in the eal file (S213).

Meanwhile, the format conversion unit 140 extracts the evd file from the partial discharge event data in a non-standard format (S221).

Here, the evd file is a two-byte field in which information indicating the size of partial discharge event data is recorded, a two-byte field in which position information on the time axis of the three-dimensional space is recorded, the number of impulses and the phase axis of the three-dimensional space. It includes an 8-byte field in which the location information of . The length of the field in which the size of each of the impulses is recorded varies according to the number of impulses.

Next, the format conversion unit 140 obtains the waveform information of the electromagnetic wave related to the partial discharge event from the evd file, and performs adjustment to the IEC61850 standard format.

Specifically, the format conversion unit 140 obtains the total size of the waveform information from the field of the first 2 bytes of the evd file (S222).

Thereafter, the format conversion unit 140 obtains a position value on the time axis of the three-dimensional space from the next two-byte field (S223). At this time, the format conversion unit 140 adjusts the position value on the time axis of the three-dimensional space from the resolution of 50 Hz for 1 second of the non-standard format to the resolution of 60 Hz for 1 second of the IEC61850 standard format (S224).

Thereafter, the format conversion unit 140 obtains the number of impulses and a position value on the phase axis of the 3D space from the next 8-byte field ( S225 ).

Thereafter, the pocket conversion unit 140 obtains the magnitude of each of the impulses from the next field (S226). At this time, the pocket converter 140 adjusts the size of each impulse on the size axis of the three-dimensional space from the 'scale of -75 to -35 dBm' in the non-standard format to the 'scale of -55 to 0 dBm' in the IEC61850 standard format ( S227).

Thereafter, the format converter 140 may acquire all waveform information recorded in the evd file (S228).

Meanwhile, the format conversion unit 140 acquires all sensor IDs and occurrence time information recorded in the eal file (S213), and when all waveform information recorded in the evd file is acquired (S228), it is acquired from the eal file and the evd file A plurality of 'data bundles in units of 1 second' are generated by matching the information obtained with each other (S230). This conversion process is repeated until the next waveform no longer exists.

Referring to FIG. 4B , the format converter 140 performs a process of configuring the generated 'data bundle in units of 1 second' for each sensor.

First, the format conversion unit 140 allocates a buffer for each sensor ID (S231).

Thereafter, the format converter 140 'samples the plurality of generated 'data bundles in units of one second' on the phase axis to 'sampling 64 times per cycle of the system AC signal' in the non-standard format '128 for each cycle of the system AC signal' Converts to the IEC61850 standard format for 'sampling' (S232). At this time, the format conversion unit 140 stores each of the converted 'data bundles in units of one second' in a buffer allocated to each sensor ID (S233).

Thereafter, the format conversion unit 140 checks whether all 'data bundles in units of one second' are stored in a buffer allocated for each sensor ID (S234). At this time, the format conversion unit 140 generates a 'data bundle in units of 1 second' for each sensor according to the confirmation result (S235).

Referring to FIG. 4C , the format conversion unit 140 corresponds to the 'one-second unit data bundle' generated for each sensor, in the time information (ie, hour/minute/second), the hour/minute information is identical to the one-second unit data. Executes the process of creating 'data bundles in units of 1 minute' by storing them in the buffer.

First, the format conversion unit 140 allocates a buffer in which 'data bundles in units of one minute' are stored (S241).

Here, the buffer in which the 'one-minute data bundle' is stored is the 'one-second unit data bundle' generated by each sensor in the time information (ie, hour/minute/second), the hour/minute information is the same in 1-second units A buffer in which data is stored. That is, the 'one-minute unit data bundle' can be said to be a one-second unit data bundle having the same hour/minute information.

For example, when the time information is '11:21:17' in any one of 'data of one second' included in the 'data bundle in units of one second', the format conversion unit 140 '11 A buffer for storing 'one-second unit data' having the same hour/minute information '11:21' at 'Hour 21: 17 Second' may be allocated. That is, the allocated buffer becomes the buffer of '11:21'. In the corresponding buffer, 1-second unit data having time information between '11:21:00' and '11:21:59' may be stored. The 1-second unit data bundle stored in the buffer at '11:21' is a '1-second unit data bundle' with the same hour/minute information, which can be collectively referred to as a 'one-minute data bundle'.

Thereafter, the format conversion unit 140 checks whether the 'data bundle in units of 1 second' is included in the buffer for the 'data bundle in units of 1 minute' (S242).

In other words, the format conversion unit 140 is the same as the hour/minute information allocated to the buffer in which the 'data bundle in units of 1 minute' is stored with respect to the data in units of 1 second belonging to the 'data bundle in units of 1 second'. check whether The format conversion unit 140 determines whether each sensor corresponds to a specific minute allocated in an upper step for 1 second of data for each sensor. In this way, all 1-second data bundles corresponding to a specific minute in the allocated buffer are stored in the corresponding buffer.

At this time, if the format conversion unit 140 does not include the 'data bundle in units of 1 second' in the buffer in which the 'data bundle in units of 1 minute' is stored (S242), the 'data bundle in units of 1 second' is converted to a corresponding sensor. It is re-inserted into the bundle (S243).

On the other hand, the format conversion unit 140, when the 'data bundle in units of 1 second' is included in the buffer in which the 'data bundle in units of 1 minute' is stored (S242), the 'data bundle in units of 1 second' is added to the corresponding buffer. Save (S244).

Thereafter, the format conversion unit 140 checks whether the above-described process is performed for all 1 second data bundles and for all sensor-specific bundles (S245 and S246).

Thereafter, the format conversion unit 140 generates data bundles in units of one minute as bundles for each sensor (S247). In this case, the format conversion unit 140 stores all bundles for each sensor in a buffer in units of 1 minute for each sensor.

The format conversion unit 140 stores the data bundle in units of one minute in the database of the standard diagnosis unit 20 (S248). In this case, the format conversion unit 140 deletes the one-minute data bundle stored in the buffer.

In this way, the format conversion unit 140 stores all the 1-minute data bundles classified into the sensor-specific bundles in the database of the standard diagnosis unit 20, and ends the data conversion process.

The partial discharge diagnosis unit 150 diagnoses the partial discharge generated in the power facility based on the 'partial discharge event data in the IEC61850 standard format' converted by the format conversion unit 140 . That is, the partial discharge diagnosis unit 150 detects the partial discharge generated in the power facility according to the partial discharge event data converted by the format conversion unit 140 even with respect to the partial discharge event data generated in the non-standard diagnosis unit 10 . can be checked

Meanwhile, in order to implement the IEC61850-based partial discharge online diagnosis system, the upper server 200 that interacts with the user terminal 210 using the SPDC class of the logical node shown in FIG. 5, for example, a Human Machine Interface (HMI) ) must be provided to the server. 5 is a diagram illustrating an SPDC class of a logical node of the IEC61850 standard.

Here, the logical node of the IEC61850 standard is the smallest unit of object expressing numerous functions of the substation. The type of logical node class of the IEC61850 standard is defined in various ways for each function of the substation, and among them, the SPDC class expresses information about partial discharge generated from the power equipment of the substation.

The upper interface unit 160 sets the partial discharge alarm of the SPDC class of the logical node based on the occurrence of partial discharge among the diagnostic results of the partial discharge, and based on the type of partial discharge, the logical node's average level, peak level, etc. Determines the input information of the SPDC class.

The upper server 200 may generate an SPDC class of a logical node using the determined information, and diagnose the state of the power equipment by using the logical node.

This means that standard compatibility between partial discharge online diagnostic systems applying non-standard format and IEC61850 standard format can be implemented without data loss even if the existing non-standard partial discharge online diagnostic system is not replaced.

6 is a diagram illustrating a partial discharge event processing method for data standard compatibility according to an embodiment of the present invention.

The partial discharge event processing apparatus 100 diagnoses whether a partial discharge event occurs (S301).

At this time, when a partial discharge event occurs (S302), the partial discharge event processing apparatus 100 generates the partial discharge event generated in the power facility in a non-standard format different from the format defined in the IEC61850 standard (S303).

Thereafter, the partial discharge event processing apparatus 100 detects the partial discharge event data by monitoring the generation of the partial discharge event data in a non-standard format ( S304 ).

Then, the partial discharge event processing apparatus 100 converts the non-standard format of the detected event data into the format of the IEC61850 standard (S305).

Thereafter, the partial discharge event processing apparatus 100 diagnoses the partial discharge generated in the power facility based on the event data of the IEC61850 standard format (S306).

The partial discharge event processing apparatus 100 generates a logical node of the IEC61850 standard based on the diagnosis result of the partial discharge and provides it to the upper server performing interaction with the user terminal 201 (S307).

The embodiments of the present invention described above are merely exemplary, and those of ordinary skill in the art to which the present invention pertains will appreciate that various modifications and equivalent other embodiments are possible therefrom. Accordingly, it will be understood that the present invention is not limited to the forms mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. Moreover, it is to be understood that the present invention covers all modifications, equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims.

10: non-standard diagnostic unit 20: standard diagnostic unit
110: non-standard diagnosis unit 120: first event linkage unit
130: second event linking unit 140: format conversion unit
150: partial discharge diagnosis unit 160: upper interface unit

Claims (18)

a non-standard diagnosis unit for generating first partial discharge event data in a non-standard format according to diagnosing occurrence of a partial discharge event;
a format conversion unit for converting the first partial discharge event data from a non-standard format to an IEC61850 standard format by adjusting each axis of size, time, and phase in a three-dimensional space;
a partial discharge diagnosis unit for diagnosing a partial discharge generated in a power facility based on the converted second partial discharge event data of the IEC61850 standard format; and
An upper interface unit for generating a logical node SPDC class of the IEC61850 standard according to the diagnosis result of the partial discharge diagnosis unit and providing it to an upper server based on the IEC61850 standard; includes;
The non-standard diagnostic unit is located in a non-standard diagnostic unit, which is a non-standard-based older partial discharge diagnostic system,
The format conversion unit, the partial discharge diagnosis unit, and the upper interface unit are located in a standard diagnosis unit, which is a new partial discharge diagnosis system based on the IEC61850 standard,
A partial discharge event processing apparatus for data standard compatibility in which a standard compatibility function through format conversion of the first partial discharge event data is performed between the non-standard diagnosis unit and the standard diagnosis unit.
The method of claim 1,
The non-standard diagnostic unit,
Partial discharge event processing device for data standard compatibility that diagnoses partial discharge event occurrence by receiving sensor data collected from various sensors installed in power facilities through Ethernet.
The method of claim 1,
The format conversion unit,
A partial discharge event processing apparatus for data standard compatibility that uses a timer to check first partial discharge event data in a non-standard format every predetermined period.
The method of claim 1,
The first partial discharge event data includes an eal file with an eal extension and an evd file with an evd extension,
The eal file includes a sensor ID and occurrence time information related to a partial discharge event,
The evd file is a partial discharge event processing device for data standard compatibility that includes 'waveform information of electromagnetic waves' related to the cause of the partial discharge event.
5. The method of claim 4,
The format conversion unit,
Partial discharge event processing apparatus for data standard compatibility for acquiring a sensor ID and occurrence time information related to a partial discharge event from the eal file extracted from the first partial discharge event data.
5. The method of claim 4,
The format conversion unit,
Partial discharge event processing apparatus for data standard compatibility for obtaining waveform information of electromagnetic waves related to partial discharge events from the evd file extracted from the first partial discharge event data and performing adjustment to the IEC61850 standard format.
7. The method according to claim 5 or 6,
The format conversion unit,
A partial discharge event processing apparatus for data standard compatibility for generating a plurality of 'data bundles in units of one second' by matching information obtained from the eal file and the evd file.
8. The method of claim 7,
The format conversion unit,
Partial discharge event processing device for data standard compatibility that configures the generated 'data bundle in units of 1 second' for each sensor.
9. The method of claim 8,
The format conversion unit,
Partial discharge event processing device for data standard compatibility that generates '1 second unit data bundle' generated for each sensor as '1 minute unit data bundle' of 1 second unit data having the same hour/minute information in time information.
delete The method of claim 1,
Partial discharge event processing device for data standard compatibility, each of the non-standard diagnostic unit and the standard diagnostic unit having first and second event linkers providing an interface environment for transmission of the second partial discharge event data in a non-standard format . generating first partial discharge event data in a non-standard format in response to the non-standard diagnosis unit diagnosing occurrence of a partial discharge event;
converting the first partial discharge event data from a non-standard format to an IEC61850 standard format by a format converter by adjusting each axis of size, time, and phase in a three-dimensional space;
diagnosing the partial discharge generated in the power facility based on the converted second partial discharge event data of the IEC61850 standard format by the partial discharge diagnosis unit; and
The step of the upper interface unit generating a logical node SPDC class of the IEC61850 standard according to the diagnosis result and providing it to the upper server based on the IEC61850 standard; includes;
The non-standard diagnostic unit is located in a non-standard diagnostic unit, which is a non-standard-based older partial discharge diagnostic system,
The format conversion unit, the partial discharge diagnosis unit, and the upper interface unit are located in a standard diagnosis unit, which is a new partial discharge diagnosis system based on the IEC61850 standard,
A partial discharge event processing method for data standard compatibility in which a standard compatibility function through format conversion of the first partial discharge event data is performed between the non-standard diagnosis unit and the standard diagnosis unit.
13. The method of claim 12,
The first partial discharge event data includes an eal file with an eal extension and an evd file with an evd extension,
The eal file includes a sensor ID and occurrence time information related to a partial discharge event,
The evd file is a partial discharge event processing method for data standard compatibility including 'waveform information of electromagnetic waves' related to the cause of the partial discharge event.
14. The method of claim 13,
The conversion step is
Partial discharge event processing method for data standard compatibility comprising the; acquiring a sensor ID and occurrence time information related to the partial discharge event from the eal file extracted from the first partial discharge event data.
14. The method of claim 13,
The conversion step is
Partial discharge event processing method for data standard compatibility including; obtaining waveform information of an electromagnetic wave related to a partial discharge event from the evd file extracted from the first partial discharge event data and adjusting to the IEC61850 standard format .
16. The method according to claim 14 or 15,
The conversion step is
generating a plurality of 'data bundles in units of one second' by matching the information obtained from the eal file and the evd file to each other;
17. The method of claim 16,
The conversion step is
Partial discharge event processing method for data standard compatibility comprising; configuring the generated 'data bundle in units of 1 second' for each sensor.
18. The method of claim 17,
The conversion step is
Part for data standard compatibility including; generating the 'one-second data bundle' generated for each sensor as the '1-minute data bundle' of 1-second data having the same hour/minute information in the time information How to handle discharge events.

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