KR20170060626A

KR20170060626A - Apparatus, system, and method for remote diagnostic of switch

Info

Publication number: KR20170060626A
Application number: KR1020150164385A
Authority: KR
Inventors: 최성민; 이승훈; 박종명; 김정운
Original assignee: 한국전력공사
Priority date: 2015-11-24
Filing date: 2015-11-24
Publication date: 2017-06-02

Abstract

An apparatus for remote diagnosis of an opening and closing apparatus according to an embodiment of the present invention includes an analyzer for receiving and analyzing a discharge amount of an opening and closing apparatus in real time and determining a partial discharge of the opening and closing apparatus based on a pattern of a discharge amount, And a communication unit for transmitting the analysis result of the analysis unit to the communication object when the analysis unit determines that the partial discharge occurs in the opening / closing apparatus.

Description

Technical Field [0001] The present invention relates to a remote diagnosis apparatus, a system,

The present invention relates to an opening / closing device remote diagnosis apparatus, system and method.

Generally, the opening and closing device can perform the function of supplying and blocking the electric power. It is necessary to diagnose the occurrence of a failure of such switching device. For example, it is necessary to measure the partial discharge generated in the switching device.

Conventionally, a partial discharge of the opening / closing apparatus has been diagnosed as means for diagnosing the on-site facilities by moving and provisionally installing portable partial discharge diagnostic equipment for each substation measurement point in the opening / closing apparatus. Portable partial discharge diagnostic equipment is a device capable of inexpensively measuring the partial discharge of the switchgear.

However, according to these measures, the administrator shall measure at least 10 minutes for one portable partial discharge diagnostic device, and if abnormal symptoms occur, it may be measured for three consecutive days. If a partial discharge occurs during three consecutive days of measurement, the administrator can not recognize the occurrence of the partial discharge if the diagnostic equipment is not monitored. If the fault progresses before the stored data is checked, . &Lt; / RTI >

The basic operation of portable partial discharge diagnostic equipment is to cycle over large quantities of equipment periodically and measure for more than 10 minutes. Since the abnormal symptom caused by the partial discharge inside the switchgear device may continue or occur repeatedly (it may occur intermittently), it is only possible to increase the detection probability of the partial discharge by increasing the measuring time and the target equipment.

An embodiment of the present invention provides an opening / closing device remote diagnosis apparatus, a system, and a method in which an administrator can diagnose a partial discharge of an opening / closing apparatus remotely.

An apparatus for remote diagnosis of an opening and closing apparatus according to an embodiment of the present invention includes an analyzing unit for receiving and analyzing a discharge amount of an opening and closing apparatus in real time and determining a partial discharge of the opening and closing apparatus based on a pattern of the discharge amount, ; And a communication unit for transmitting an analysis result of the analysis unit to a communication object when the analysis unit determines that a partial discharge occurs in the opening / closing apparatus; . &Lt; / RTI >

For example, the analyzer may compare the pattern of the discharge amount with a predetermined pattern to determine the type of the partial discharge generated in the opening / closing apparatus.

For example, the analyzer may determine a partial discharge of the opening / closing apparatus based on a pattern discrepancy phenomenon in which the pattern of the discharge amount in the last section is different from the pattern of the discharge amount in the previous section.

For example, the analyzing unit may determine a partial discharge of the opening / closing apparatus based on a ratio of a time at which a pattern discrepancy phenomenon occurs in which the discharge amount is larger than a predetermined discharge amount in the most recent accumulation period.

For example, the analyzing unit may change the predetermined discharge amount based on the noise of the opening / closing apparatus.

An open / close device remote diagnosis system according to an embodiment of the present invention includes: a sensor device for measuring a discharge of a plurality of open / close devices; And an arithmetic unit for analyzing a discharge of the plurality of open / close devices and transmitting analysis results to a communication object; Wherein the computing device comprises: an analyzer for receiving and analyzing a discharge amount from the sensor in real time and determining a partial discharge of the plurality of open / close devices based on the pattern of the discharge amount; And a communication unit for transmitting an analysis result of the analyzing unit to the communication object when the analyzing unit determines that a partial discharge occurs in at least one of the plurality of opening and closing devices; . &Lt; / RTI >

For example, the apparatus may further include a relay device that receives the amount of discharge of the plurality of opening / closing devices from the sensor device and sequentially outputs the amount of discharge to the calculating device, wherein the sensor device includes a plurality of gas insulated switchgear And may be electrically connected to the relay device through an external terminal.

For example, the computing device may further include a display unit for displaying an analysis result of the analysis unit and position information of the opening / closing device where the partial discharge occurs among the plurality of opening / closing devices.

For example, the analyzing unit may determine a partial discharge of the opening / closing apparatus based on a ratio of a time at which a pattern mismatch phenomenon in which the discharge amount is larger than a predetermined discharge amount in the most recent cumulative interval, And a setting unit for setting the length of the latest accumulation period and the communication object.

For example, the network management system may further include a network for connecting and managing the plurality of switching devices on-line, and the communication unit may transmit the analysis result of the analysis unit to the network.

According to an embodiment of the present invention, Analyzing and analyzing a discharge amount of the opening and closing device in real time and comparing the discharge amount pattern with a preset pattern; Generating an event when the pattern mismatch accumulation rate between the pattern of the discharge amount and the predetermined pattern is equal to or greater than a predetermined ratio; And Transmitting the event to a communication object; . &Lt; / RTI >

For example, when the event is generated, diagnosis of the partial discharge of the opening / closing apparatus may be further performed by performing diagnosis and / or fine diagnosis of the opening / closing apparatus.

The remote diagnosis apparatus, system and method according to an embodiment of the present invention can prevent malfunction and prolong the service life of the apparatus through prior detection of abnormality in the interior of the opening and closing apparatus.

Further, according to the present invention, it is possible to reduce the damage recovery amount by preventing the failure of the switching device. For example, the present invention can save about 800 million won per 154kV substation by estimating the cost of restoration of the facility, the amount of power loss, and the damage amount of the special high-voltage customer.

Further, according to the present invention, it is possible to maximize the utilization of portable partial discharge diagnostic equipment without investing in new equipment, thereby enhancing diagnostic capability.

1 is a block diagram illustrating an apparatus for remote diagnosis of an opening and closing apparatus according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating an open / close device remote diagnosis system according to an embodiment of the present invention.
3 is a graph showing the discharge amount when a partial discharge occurs in the opening / closing apparatus.
4 is a graph reflecting noise in the graph of FIG.
5 is a graph reflecting noise in the graph of FIG.
FIG. 6 is a graph for explaining the principle of partial discharge diagnosis in the graph of FIG. 3; FIG.
FIG. 7 is a graph illustrating a predetermined pattern to be compared with the pattern of the analysis unit of FIG. 1 and FIG. 2. FIG.
FIG. 8 is a view illustrating the display unit of FIG. 2. FIG.
Fig. 9 is a diagram illustrating the arrangement of the sensor device of Fig. 2;
FIG. 10 is a block diagram illustrating a remote diagnosis method of an opening / closing device according to an embodiment of the present invention.
11 is a diagram illustrating an exemplary computing environment in which one or more embodiments disclosed herein may be implemented.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings in order that those skilled in the art can easily carry out the present invention.

1 is a block diagram illustrating an apparatus for remote diagnosis of an opening and closing apparatus according to an embodiment of the present invention.

Referring to FIG. 1, an open / close device remote diagnosis apparatus according to an embodiment of the present invention may include an analysis unit 110 and a communication unit 120.

The analyzer 110 can receive and analyze the discharge amount of the opening / closing device in real time, and can determine the partial discharge of the opening / closing device based on the pattern of the discharge amount. Here, the partial discharge means a phenomenon in which the internal insulation performance of the opening and closing apparatus is deteriorated due to a local discharge phenomenon occurring between the electrode and the electrode, leading to an internal failure.

For example, the analysis unit 110 may determine a partial discharge of the opening / closing apparatus based on a pattern discrepancy phenomenon in which the pattern of the discharge amount in the last section is different from the pattern of the discharge amount in the previous section. When a partial discharge occurs in the opening and closing apparatus, the period of time in which the size of the discharge amount increases or the period in which a large discharge amount occurs may be shortened. The analyzer 110 analyzes the variation pattern of the discharge amount in real time, and can promptly grasp the state having a high probability of the partial discharge in the opening / closing apparatus.

The analyzer 110 may compare the pattern of the discharge amount with a predetermined pattern to determine the type of the partial discharge generated in the opening / closing apparatus. A specific example of the type of partial discharge will be described later with reference to Fig.

The communication unit 120 can transmit the analysis result of the analysis unit 110 to the communication object when the analysis unit 110 determines that the partial discharge occurs in the opening / closing apparatus. Here, the communication object may be a portable terminal or a management computer, from which an administrator can check information from time to time. Therefore, the administrator can confirm the partial discharge of the opening / closing apparatus more accurately by checking the information received by the communication object by the communication unit 120. [

Accordingly, the administrator can prevent malfunctions and prolong the life of the apparatus through the prior discovery of abnormality in the switchgear.

For example, the communication unit 120 may include a wireless device for transmitting an abnormal alarm event, such as an LTE router or an SLT-CS081, using a carrier LTE network. The administrator can confirm the waveform at the time of the occurrence of the event by checking the received data. In order to view the real-time waveform, the administrator can remotely access the remote diagnosis device of the opening / closing device utilizing the remote access application of the portable terminal, Can be performed.

FIG. 2 is a block diagram illustrating an open / close device remote diagnosis system according to an embodiment of the present invention.

Referring to FIG. 2, an open / close device remote diagnosis system according to an embodiment of the present invention may include a sensor device 200 and a computing device 400, and may further include a relay device 300 and a network 500 .

The sensor device 200 may include a plurality of sensors each measuring a discharge of a plurality of open / close devices. That is, the remote diagnosis system of the opening and closing apparatus according to an embodiment of the present invention can collectively diagnose partial discharges of a plurality of opening and closing apparatuses. Thus, the administrator can diagnose the partial discharge directly in the field for all of the plurality of switching devices, thereby reducing the diagnosis time, cost and errors.

The relay device 300 receives the discharge amounts of the plurality of open / close devices from the sensor device 200, and sequentially outputs the discharge amounts to the calculation device 400. For example, the relay device 300 may be connected to the other end of a plurality of coaxial cables, one end of which is connected to the external terminal of each of the plurality of sensors. Here, the relay device 300 may receive the measured discharge amount sequentially from a plurality of sensors at a predetermined time interval.

Also, the relay device 300 may analyze and diagnose the discharge amount before delivering the discharge amount to the calculation device 400, and may obtain the waveform of the discharge amount and transmit the waveform to the calculation device 400.

The computing device 400 can analyze the discharges of a plurality of switching devices and transmit the analysis result to the communication object. For example, the computing device 400 may be a notebook computer or a computer equipped with software capable of communicating and analyzing a discharge of a plurality of switching devices. The specific computing environment of the computing device 400 will be described later with reference to FIG.

The computing device 400 may include an analyzing unit 410, a communication unit 420, a display unit 430, and a setting unit 440. Here, the analysis unit 410 and the communication unit 420 may be the same as the analysis unit and the communication unit described above with reference to FIG.

The display unit 430 may display an analysis result of the analysis unit 410. The administrator can check the display unit 430 to determine whether the remote controller of the opening and closing apparatus is operating normally. Also, the display unit 430 may display the position information of the opening / closing apparatus where the partial discharge occurs among the plurality of opening / closing apparatuses. Accordingly, the manager can more efficiently diagnose a plurality of opening / closing apparatuses. A specific example of the display unit 430 will be described later with reference to FIG.

The setting unit 440 can set the reference discharge amount of the pattern analysis of the analysis unit 410, the length of the measurement region, and the communication object. Administrators can anticipate optimal settings while accumulating trial and error through iterative management of switchgear. The setting unit 440 may receive and store the input information of the administrator so that the optimum set value is continuously reflected in the opening / closing device remote diagnosis system.

The network 500 can manage a plurality of open / close devices by connecting them online. That is, the network 500 can provide the administrator with an environment in which an administrator can remotely control the open / close states of a plurality of open / close devices.

The network 500 may receive the analysis result of the analysis unit 410 from the communication unit 420. Accordingly, the manager who controls the open / close states of the plurality of open / close devices can manage the partial discharge of the plurality of open / close devices together. For example, the network 500 may be implemented by connecting a remote computer and an LTE router with a LAN cable.

3 is a graph showing the discharge amount when a partial discharge occurs in the opening / closing apparatus.

Referring to FIG. 3, the horizontal axis represents time and the vertical axis represents the discharge amount on a logarithmic scale.

The remote diagnosis apparatus for an opening and closing apparatus according to an embodiment of the present invention can determine the partial discharge of the opening / closing apparatus based on a ratio of a time at which a pattern mismatch phenomenon occurs in which a discharge amount of the opening / closing apparatus is larger than a predetermined discharge amount .

For example, a state in which the discharge amount of the opening / closing apparatus is smaller than a predetermined discharge amount is normally maintained, but a state in which the discharge amount of the opening / closing apparatus is greater than a predetermined discharge amount for a time of 25% or more in a specific section can be maintained. At this time, if the pattern discrepancy of 25% or more occurs, it can be analyzed that a partial discharge occurs in the switching device. For example, it can be deduced that a partial discharge occurs in the opening / closing apparatus because the pattern mismatch phenomenon is about 40% through the waveform of FIG.

Here, the surveillance area means a section in which a pattern change is monitored in real time. For example, the minimum discharge amount of the surveillance area may be -50 dBm, and the latest accumulation interval of the surveillance area may be one minute.

When the pattern mismatch phenomenon is more than a certain rate, the remote diagnosis apparatus of the opening / closing apparatus can transmit an alarm to the manager by assuming that a partial discharge occurs in the opening / closing apparatus.

4 is a graph reflecting noise in the graph of FIG.

Referring to FIG. 4, it can be seen that although the pattern mismatch does not occur, the discharge amount increases overall as compared with the waveform of FIG. 3 due to noise.

If the surveillance region is not adjusted, it is analyzed that a pattern inconsistency phenomenon occurs even though the pattern inconsistency does not occur, and it can be mistaken that a partial discharge occurs in the opening / closing apparatus. Therefore, the surveillance region may be adjusted depending on the noise.

5 is a graph reflecting noise in the graph of FIG.

Referring to FIG. 5, it can be seen that an intermittent peak is included in the waveform as compared with the waveform of FIG.

These intermittent peaks can be attributed to noise, which can affect the pattern mismatch ratio analysis even if the monitoring area is adjusted.

Accordingly, the pattern inconsistency ratio, which is a criterion for judging that the partial discharge occurs in the opening / closing apparatus, can be adjusted according to the noise.

For example, the pattern mismatch ratio may be adjusted to 25% + N. Here, N may be a ratio of the time when the noise of the opening / closing apparatus is larger than the minimum discharge amount of the surveillance region. For example, since the intermittent peak occurs in the entire section through the waveform of FIG. 5, the pattern inconsistency ratio can be adjusted to 25% + 10% = 35%.

FIG. 6 is a graph for explaining the principle of partial discharge diagnosis in the graph of FIG. 3; FIG.

Referring to FIG. 6, (a) the horizontal axis of the graph represents time and the vertical axis represents the discharge amount in the surveillance region. (b) shows a graph after one second elapsed from the graph (a), (c) shows a graph after two seconds elapsed from the graph (a), (a), (b), and (d) show graphs after 4 seconds elapsed from graph (a) and graph (a) (H) shows the graph after 9 seconds elapsed from the graph (a), the graph shows the graph after 10 seconds elapsed from the graph (a), and the graph shows the graph after 11 seconds elapsed from the graph (a) (K) graph shows the elapse of 16 seconds in the graph (a).

(a) waveform and (b) waveform include a 20% pattern mismatch of 12 seconds in the last cumulative interval of 60 seconds, so that it can be judged as normal. (c) The waveform can be judged to be normal because it includes a pattern inconsistency of 21.66% which is 13 seconds in the most recent cumulative interval. (d) The waveform can be judged to be normal because it includes a pattern inconsistency of 23.33% which is 14 seconds in the most recent cumulative interval.

(e) waveform, (f) waveform and (g) waveform include a pattern inconsistency of 25%, which is 15 seconds in the most recent accumulation period, so that a partial discharge can be analyzed in the opening / closing apparatus. Here, the pattern inconsistency of 25% can be maintained for 2 to 3 seconds.

(h) Waveforms (i) and (j) waveforms may be judged to be normal since they include a pattern mismatch of 23.33% which is 14 seconds in the most recent cumulative interval.

(k) waveform includes a pattern inconsistency of 25% which is 15 seconds in the most recent accumulation period, so that it can be analyzed that a partial discharge occurs in the switching device.

FIG. 7 is a graph illustrating a predetermined pattern to be compared with the pattern of the analysis unit of FIG. 1 and FIG. 2;

Referring to FIG. 7, the predetermined pattern may include a pattern corresponding to the protruding electrode, a pattern corresponding to the free conductor, a pattern corresponding to the defect of the insulator, and a pattern corresponding to the floating electrode.

The apparatus for remote diagnosis of the opening / closing apparatus according to an embodiment of the present invention may compare the pattern of the measured discharge amount with a preset pattern to determine the type of the partial discharge generated in the opening / closing apparatus and provide the type information to the manager.

The predetermined pattern may have a gradually varying pattern with a large discharge amount which can cause insulation breakdown at a relatively small discharge amount of several pC to several tens of pC. Also, the period in which a large discharge amount capable of causing dielectric breakdown occurs intermittently can be gradually shortened in a period of several seconds to several tens of seconds.

Therefore, the remote diagnosis apparatus of the opening / closing apparatus according to the embodiment of the present invention can efficiently analyze the partial discharge of the opening / closing apparatus by using the common characteristics of the predetermined pattern.

FIG. 8 is a view illustrating the display unit of FIG. 2. FIG.

Referring to FIG. 8, the above four graphs represent the discharge amount of the opening and closing apparatus, and the following two graphs represent the discharge amount pattern change intensively.

Here, a screen for setting a pattern change monitoring area and setting a judgment criterion for occurrence of partial discharge can be arranged at the lower right end.

In addition, when the opening / closing device remote diagnosis apparatus according to an embodiment of the present invention diagnoses a plurality of opening / closing apparatuses, a screen for confirming which one of the plurality of opening / closing apparatuses is currently monitored may be displayed as Chan have.

Fig. 9 is a diagram illustrating the arrangement of the sensor device of Fig. 2;

Referring to Fig. 9, (a) shows the arrangement of the sensor device 200 in the gas insulated switchgear (GIS), and (b) shows the bird's-eye view of the gas insulated switchgear (GIS).

The apparatus for remote diagnosis of an opening and closing apparatus according to an embodiment of the present invention can diagnose a partial discharge of a gas insulated switchgear (GIS). Here, a gas insulated switchgear (GIS) is an opening / closing device for keeping insulation by sealing a high-pressure insulating gas into a steel tank, and can perform power supply and shutdown functions.

The sensor device 200 may be installed inside a plurality of gas insulated switchgears (GIS) and may be electrically connected to a relay device or an arithmetic device through an external terminal.

Hereinafter, a remote diagnosis method of an opening and closing apparatus according to an embodiment of the present invention will be described. Since the remote diagnosis method of the opening and closing apparatus can be performed in the remote diagnosis apparatus or system of the opening and closing apparatus described above with reference to FIGS. 1 to 9, the same or corresponding contents to those described above will not be duplicated.

FIG. 10 is a block diagram illustrating a remote diagnosis method of an opening / closing device according to an embodiment of the present invention.

Referring to FIG. 10, a method for remote diagnosis of an open / close device according to an embodiment of the present invention includes a step S10 of setting an initial pattern when a pattern change monitoring area and a partial PD are not generated, (S30). In the case where the cumulative pattern inconsistency rate is 25% or more, it is determined whether there is a change in the pattern compared with the initial pattern (S20), whether or not the monitoring time period pattern inconsistency accumulation rate is 25% (S40), a step S50 of checking whether the pattern mismatch accumulation rate exceeds 25%, a step S50 of recognizing an alarm sound and a partial discharge (PD) (S70) of suspending the pattern image attached to the mail (S70), suspending the pattern image attached to the mail (S70), performing a real-time pattern analysis by remotely accessing the notebook (S80), determining whether the partial discharge (S90) and It may include a step (S100) which performed the diagnostic confirmation and precise diagnosis of the device.

Here, the confirmation diagnosis refers to a diagnosis performed by the manufacturer of the diagnostic equipment in the case where there is a partial discharge finding as a result of the diagnosis by the administrator, and may include diagnosis by only partial discharge signal file analysis without re-measurement.

Precision diagnosis refers to diagnosis performed by using precision analysis equipment such as an oscilloscope and spectrum analyzing equipment in order to confirm the type of partial discharge and the location of occurrence of an abnormality in an opening / closing device.

FIG. 11 is an illustration of an exemplary computing environment in which one or more embodiments disclosed herein may be implemented, and is illustrative of a system 1000 including a computing device 1100 configured to implement one or more of the above- / RTI > For example, the computing device 1100 may be a personal computer, a server computer, a handheld or laptop device, a mobile device (mobile phone, PDA, media player, etc.), a multiprocessor system, a consumer electronics device, A distributed computing environment including any of the above-described systems or devices, and the like.

The computing device 1100 may include at least one processing unit 1110 and memory 1120. [ The processing unit 1110 may include, for example, a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor, an application specific integrated circuit (ASIC), a field programmable gate array And may have a plurality of cores. The memory 1120 can be a volatile memory (e.g., RAM, etc.), a non-volatile memory (e.g., ROM, flash memory, etc.) or a combination thereof.

In addition, the computing device 1100 may include additional storage 1130. Storage 1130 includes, but is not limited to, magnetic storage, optical storage, and the like. The storage 1130 may store computer readable instructions for implementing one or more embodiments as disclosed herein, and other computer readable instructions for implementing an operating system, application programs, and the like. The computer readable instructions stored in storage 1130 may be loaded into memory 1120 for execution by processing unit 1110.

In addition, computing device 1100 may include input device (s) 1140 and output device (s) 1150. Here, input device (s) 1140 may include, for example, a keyboard, a mouse, a pen, a voice input device, a touch input device, an infrared camera, a video input device, or any other input device. Also, output device (s) 1150 can include, for example, one or more displays, speakers, printers, or any other output device. In addition, computing device 1100 may use an input device or output device included in another computing device as input device (s) 1140 or output device (s) 1150. [

The computing device 1100 may also include communication connection (s) 1160 that enable communication with other devices (e.g., computing device 1300) via the network 1200. (S) 1160 may include a modem, a network interface card (NIC), an integrated network interface, a radio frequency transmitter / receiver, an infrared port, a USB connection or other Interface. Also, the communication connection (s) 1160 may include a wired connection or a wireless connection.

Each component of the computing device 1100 described above may be connected by various interconnects (e.g., peripheral component interconnect (PCI), USB, firmware (IEEE 1394), optical bus architecture, etc.) And may be interconnected by a network.

As used herein, terms such as "component," "module," "system," "interface," and the like generally refer to a computer-related entity that is hardware, a combination of hardware and software, software, or software in execution. For example, an element may be, but is not limited to being, a processor, an object, an executable, an executable thread, a program and / or a computer running on a processor. For example, both the application running on the controller and the controller may be components. One or more components may reside within a process and / or thread of execution, and the components may be localized on one computer and distributed among two or more computers.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Anyone can make various variations. For example, the present invention can detect a pattern change by combining a thermal imaging camera with a notebook PC and a preventive diagnostic device of various kinds of transforming equipments such as a system capable of tracking and managing the overheating of a facility, May be used to find out in advance.

110, 410: Analysis section 120, 420: Communication section
200: sensor device 300: relay device
400: computing unit 430: display unit
440: Setting section 500: Network

Claims

An analyzer for receiving and analyzing a discharge amount of the opening / closing device in real time and determining a partial discharge of the opening / closing device based on the pattern of the discharge amount; And
A communication unit for transmitting an analysis result of the analysis unit to a communication object when the analysis unit determines that a partial discharge occurs in the opening / closing apparatus; And a remote diagnosis device.

The method according to claim 1,
Wherein the analyzer compares a pattern of the discharge amount with a predetermined pattern to determine the type of the partial discharge generated in the opening / closing device.

The method according to claim 1,
Wherein the analysis unit determines a partial discharge of the opening / closing apparatus based on a pattern discrepancy phenomenon in which a pattern of a discharge amount in a latest section is different from a pattern of a discharge amount in a previous section.

The method according to claim 1,
Wherein the analyzing unit determines a partial discharge of the opening / closing apparatus based on a ratio of a time at which a pattern mismatch phenomenon in which the discharge amount is larger than a predetermined discharge amount in a cumulative interval.

5. The method of claim 4,
Wherein the analyzer changes the predetermined amount of discharge based on noise of the opening / closing device.

5. The method of claim 4,
The analyzing unit calculates the following equation:
R = 25% + N
Determines the ratio R of the pattern mismatch time according to the pattern mismatch time,
Here, N is the ratio of the time when the noise of the opening / closing device is larger than the predetermined discharge amount.

5. The method of claim 4,
Wherein the analyzer sets the predetermined discharge amount to -50 dBm and sets the latest cumulative interval as one minute.

A sensor device for measuring a discharge of a plurality of switching devices; And
An arithmetic unit for analyzing the discharges of the plurality of open / close devices and transmitting analysis results to a communication object; Lt; / RTI >
The computing device includes:
An analyzer for receiving and analyzing a discharge amount from the sensor in real time and determining a partial discharge of the plurality of open / close devices based on the pattern of the discharge amount; And
A communication unit for transmitting an analysis result of the analyzing unit to the communication object when the analyzing unit determines that a partial discharge occurs in at least one of the plurality of opening and closing devices; The remote diagnosis system comprising:

9. The method of claim 8,
Further comprising: a relay device that receives the discharge amounts of the plurality of opening and closing devices from the sensor device and sequentially outputs the discharge amounts to the computing device,
Wherein the sensor device is installed inside a plurality of gas insulated switchgears and is electrically connected to the relay device through an external terminal.

9. The method of claim 8,
Wherein the computing device further comprises a display unit for displaying an analysis result of the analyzing unit and position information of an opening / closing device where a partial discharge occurs among the plurality of opening / closing devices.

9. The method of claim 8,
Wherein the analysis unit determines a partial discharge of the opening / closing apparatus based on a ratio of a time at which a pattern mismatch phenomenon in which the discharge amount is larger than a predetermined discharge amount in a most recent cumulative interval,
Wherein the computing device further comprises a setting unit configured to set the predetermined amount of discharge, the length of the latest cumulative interval, and the communication object.

9. The method of claim 8,
Further comprising a network for connecting and managing the plurality of open / close devices on-line,
And the communication unit transmits the analysis result of the analysis unit to the network.

Analyzing and analyzing a discharge amount of the opening and closing device in real time and comparing the discharge amount pattern with a preset pattern;
Generating an event when the pattern mismatch accumulation rate between the pattern of the discharge amount and the predetermined pattern is equal to or greater than a predetermined ratio; And
Transmitting the event to a communication object; The remote diagnosis method comprising:

14. The method of claim 13,
And diagnosing a partial discharge of the opening / closing apparatus by performing diagnosis diagnosis and / or precise diagnosis of the opening / closing apparatus when the event is generated.