KR102036311B1 - Apparatus and method for monitoring gas pressure of gis(gas insulated switchgear) in substation - Google Patents

Abstract

Detects the operation of the gas insulated switchgear to determine whether an alarm including a simple alarm and a danger alarm occurs, and outputs an operation state and a simple alarm and danger alarm to prevent human error and to prevent gas valve misoperation. An apparatus and method for gas pressure monitoring of a substation gas insulated switchgear are presented. The gas pressure monitoring device of the substation gas insulated switch is provided with a sensing unit for detecting an operating state of the gas insulated switch; Determination unit for determining whether the alarm of the gas insulated switchgear based on the operation state and the reference value detected by the detection unit; And an output unit for outputting an operation state of the gas insulated switchgear based on the operation state detected by the detection unit, and outputting the alarm generation in a color corresponding to the alarm generation level if the determination unit determines that the alarm has occurred.

Description

Apparatus and method for monitoring gas pressure of substation gas insulated switchgear {APPARATUS AND METHOD FOR MONITORING GAS PRESSURE OF GIS (GAS INSULATED SWITCHGEAR) IN SUBSTATION}

The present invention relates to a gas pressure monitoring device and method of a substation gas insulated switch, and more particularly, a substation gas for outputting an alarm indicating a gas pressure state and an abnormal state of the gas insulated switchgear to prevent a failure due to an operator's mistake. The present invention relates to a gas pressure monitoring device and a method of an insulation switch.

Electric power systems are becoming large and ultra-high pressure due to the surge in electric power demand due to industrial development. Accordingly, maintaining the stability and reliability of power facilities above a certain level is a big issue. To this end, the installation of ultra-high voltage substation equipment is increasing, but in the case of the substation equipment is very large volume is difficult to secure the paper, increase the maintenance cost, secure the stability and the like.

Accordingly, a gas insulated switchgear (GIS) having a reduced volume has been developed and installed. A gas insulated switchgear is a switchgear that contains a switchgear, a disconnector, a switchgear, a transformer, an arrester, and a main circuit busbar in a metal tank. At this time, the metal tank is filled and sealed with SF6 gas having excellent insulation performance and extinguishing ability as an insulating medium. For example, Korean Patent Publication No. 10-2013-0017612 (name: gas insulated switchgear).

On the other hand, it operates a monitoring device for monitoring the pressure of SF6 filled in the tank of the gas insulated switchgear. The monitoring device monitors the pressure of SF6 and outputs an alarm when an error occurs. However, since the conventional monitoring device generates only an alarm in the form of text, there is a problem in that it is impossible to accurately identify an abnormal point in a power supply branch (that is, an unmanned substation).

In addition, there is no stabilization device corresponding to an abnormal occurrence of the conventional monitoring device gas recovery, and a malfunction occurs due to the exhaust of the gas at the live part due to the operator's error during the cease-fire operation of the gas insulated switchgear for expansion and inspection of the substation. There is a problem that a power failure occurs.

The present invention has been proposed to solve the above-mentioned conventional problems, and detects the operation state of the gas insulated switchgear to determine whether an alarm including a simple alarm and a danger alarm, and the operation state and the simple alarm and danger alarm screen It is an object of the present invention to provide a gas pressure monitoring device and a method of a substation gas insulated switchgear outputted to prevent human error and to prevent misoperation of gas valves in live parts.

In order to achieve the above object, the gas pressure monitoring device of a substation gas insulated switchgear according to an embodiment of the present invention, the sensing unit for sensing the operating state of the gas insulated switchgear; A determination unit determining whether an alarm of the gas insulated switch is generated based on an operation state and a reference value detected by the detection unit; And an output unit configured to output an operation state of the gas insulated switchgear based on an operation state detected by the detection unit, and output the screen to generate the alarm in a color corresponding to the alarm occurrence level when the determination unit determines that the alarm is generated. Including, but the determination unit is determined as a simple alarm when the first disconnector is installed in the first bus line in the truce state and the gas pressure is less than the reference value, the second disconnector is installed in the live second bus If the gas is in an open state and the gas pressure is less than the reference value, it is determined as a danger alarm, and the output unit separates the section including the first disconnector from the opening of the gas insulated switchgear from the section including the second disconnector. The screen is divided into different colors and the first circuit breaker in the open state adjacent to each other is determined. In, when all the disconnectors adjacent to the first breaker is open state, it is determined as a simple alarm, and if at least one of the disconnectors adjacent to the second breaker is closed state, it is determined as a danger alarm, and the output unit opens the gas insulated switchgear In the figure, the first circuit breaker and the second circuit breaker are displayed in different colors, and the screen is output, and the determination unit is in a state where the first bus is in a truce state and the second bus is in a live state. If it is determined as a simple alarm, and if the gas exhaust state in the second bus bar, it is determined as a danger alarm, and the output unit screens by dividing the first bus line and the second bus line in different colors in the opening degree of the gas insulated switchgear Output

The sensing unit detects an operating state including a live state of a bus, an operating state of a disconnector and a breaker, and a gas pressure of the gas insulated switchgear.

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In order to achieve the above object, a gas pressure monitoring method of a substation gas insulated switch according to an embodiment of the present invention includes: detecting, by a detector, an operating state of the gas insulated switch; Outputting, by an output unit, an operation state of the gas insulated switchgear based on the operation state detected in the detecting step; Determining, by the determiner, whether an alarm of the gas insulated switch is generated based on the operation state and a reference value detected in the detecting step; And outputting, by the output unit, the screen to output the alarm in a color corresponding to the alarm occurrence level if it is determined that the alarm has occurred in the determining step. If the first disconnector is open and the gas pressure is below the reference value, it is determined as a simple alarm. If the second disconnector installed on the live second bus is open and the gas pressure is below the reference value, Determining as a danger alarm, and in the outputting step, the section including the first disconnector and the section containing the second disconnector in the opening degree of the gas insulated switchgear are divided into different colors, and the screen is output. In the step of the first circuit breaker and the second circuit breaker in the open state adjacent to each other, If the furnaces are all open, a simple alarm is determined, and if at least one of the disconnectors adjacent to the second breaker is closed, a danger alarm is determined. In the outputting, the first breaker And outputting the screen to the second circuit breaker by different colors, and in the determining, when the first bus is in a truce state and the second bus is in a live state, the gas is exhausted from the first bus. If it is determined that the gas is exhausted from the second bus bar, it is determined as a danger alarm. In the outputting step, the first bus bar and the second bus bar are divided into different colors in the opening degree of the gas insulated switchgear, and the screen is output. .

In the detecting step, the sensing unit detects an operating state including a live state of a bus, an operating state of a disconnector and a breaker, and a gas pressure of a gas insulated switchgear.

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According to the present invention, the gas pressure monitoring device and method of the substation gas insulated switch detects the operating state of the gas insulated switchgear and determines whether an alarm including a simple alarm and a danger alarm occurs, and determines the operating state and the simple alarm and the danger alarm. By outputting the screen, it is possible to prevent misoperation of the gas valve in the live section during the inspection and expansion work of the gas insulated switchgear, and to prevent the occurrence of regional power failure due to the misoperation of the gas valve.

In addition, the gas pressure monitoring device and method of the substation gas insulated switch detects the operation state of the gas insulated switchgear and determines whether an alarm including a simple alarm and a danger alarm occurs, and by outputting the operation state and the simple alarm and danger alarm screen However, there is an effect that can be monitored at all times by section.

In addition, the gas pressure monitoring device and method of the substation gas insulated switchgear transmits and displays the operation status and alarm occurrence of the gas insulated switchgear to a remote switchgear, so that cross-check with the site can be prevented, thereby preventing operator's erroneous operation. It has an effect.

1 is a view for explaining a gas pressure monitoring device of a substation gas insulated switchgear according to an embodiment of the present invention.
Figure 2 is a block diagram for explaining the configuration of the gas pressure monitoring device of the substation gas insulated switchgear according to an embodiment of the present invention.
3 is a view for explaining a sensing unit of FIG.
4 to 7 are views for explaining the output unit of FIG.
8 is a flowchart illustrating a gas pressure monitoring method of a substation gas insulated switchgear according to an embodiment of the present invention.

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

Hereinafter, a gas pressure monitoring device of a substation gas insulated switchgear according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 1 is a view for explaining a gas pressure monitoring device of a substation gas insulated switchgear according to an embodiment of the present invention, Figure 2 is a view for explaining the configuration of the gas pressure monitoring device of a substation gas insulated switchgear according to an embodiment of the present invention. Is a block diagram. 3 is a view for explaining the sensing unit of FIG. 2, and FIGS. 4 to 7 are views for explaining the output unit of FIG. 2.

As shown in FIG. 1, the gas pressure monitoring device 100 (hereinafter, referred to as “gas pressure monitoring device 100”) of a substation gas insulated switch detects and outputs an operation state of the gas insulated switch 200. The gas pressure monitoring apparatus 100 transmits the sensed operation state of the gas insulated switchgear 200 to the switchboard 300 (that is, the power distribution center and the centralized monitoring control panel). To this end, as shown in FIG. 2, the gas pressure monitoring device 100 includes a sensing unit 120, a determination unit 140, and an output unit 160.

The detector 120 detects an operating state of the gas insulated switchgear 200. At this time, the sensing unit 120 detects the live state of the bus, the operating state of the disconnector and the breaker, the gas pressure of the gas insulated switch 200, and the like. To this end, as shown in FIG. 3, the detection unit 120 detects an operation state (ie, on / off) of the bus detection module 122 and the disconnecting unit detecting the live state of buses of the gas insulated switchgear 200. A disconnecting unit detecting module 124 for detecting, a breaker detecting module 126 for detecting an operating state (ie, on / off) of the breaker, and a pressure detecting module 128 for detecting gas pressure of the gas insulated switchgear 200. It is configured by.

The detector 120 transmits the detected operation state of the gas insulated switch 200 to the determination unit 140 and the output unit 160. That is, the sensing unit 120 transmits an operating state including the live state of buses, the operating state of the disconnector and the breaker, and the gas pressure to the determination unit 140 and the output unit 160.

The determination unit 140 determines whether an alarm of the gas insulated switchgear 200 is generated based on the operation state and the reference value received from the sensing unit 120. That is, the determination unit 140 determines whether an alarm of the gas insulated switchgear 200 is generated based on the live state of the bus, the operating state of the disconnector and the breaker, and whether the gas is exhausted according to the gas pressure. In this case, the determination unit 140 determines whether the alarm of the gas insulated switch 200 is one of a simple alarm and a danger alarm. Here, the determination unit 140 determines that the disconnection unit installed in the bus station in the truce state is an open (that is, off) state, and the gas is in a gas exhaust state formed with a reference value or less as a simple alarm. The determination unit 140 determines that the disconnection unit installed in the live bus state is an open (that is, off) state and that the gas is in a gas exhaust state formed with a gas pressure lower than or equal to the reference value. The determination unit 140 determines that all disconnectors adjacent to the breaker are in an open (ie, off) state and that the breaker is closed (ie, on), and thus a simple alarm. The determination unit 140 determines that at least one of the disconnectors adjacent to the breaker are all closed (ie, on), and that the corresponding breaker is a closed alarm (ie, on). The determination unit 140 determines a simple alarm when the bus is in the gas exhaust state in the truce state, and determines a danger alarm when the bus is in the gas exhaust state in the live state.

The determiner 140 transmits the determined alarm to the output unit 160. That is, the determination unit 140 transmits to the output unit 160 an alarm signal including corresponding section information (that is, a section to which a bus, a disconnector and a breaker belong) when a simple alarm or a dangerous alarm occurs.

The output unit 160 outputs the operation state of the gas insulation switch 200 based on the operation state received from the detection unit 120. At this time, the output unit 160 displays the driving state of the disconnector, the breaker, the live state of the bus, and the like on the opening degree of the gas insulated circuit breaker based on the operation state received from the sensing unit 120.

The output unit 160 outputs the alarm generated in the gas insulated switchgear 200 based on the alarm signal received from the determination unit 140. That is, the output unit 160 outputs a screen in which a simple alarm or a danger alarm occurs on the opening degree of the gas insulator based on the alarm signal received from the determination unit 140. In this case, the output unit 160 distinguishes and displays simple alarms and danger alarms in different colors in order to quickly identify an operator (or a manager).

For example, as shown in FIG. 4, due to the truce operation of the first disconnector 611 of Dunsan 1T / L, the first bus # 1BUS is in a truce state (ie, a diagonal line) and the second bus # When 2BUS) is in the live state, the determination unit 140 determines that the first disconnector 611 is in an open (ie, off) state and is a gas exhaust state, and determines that it is a simple alarm, and the second disconnector 612 is open (ie, OFF status and gas exhaust status, it is determined as a danger alarm. Here, the determination unit 140 determines the live state of the first bus # 1BUS and the second bus # 2BUS based on the power of the current transformer PT. Accordingly, the output unit 160 displays a section determined as a simple alarm (ie, a section including the first disconnector 611) in yellow, and includes a section determined as a danger alert (that is, the second disconnector 612). Marked sections) in red.

As shown in FIG. 5, when the circuit breaker 617 is in an open (ie, off) state due to the gas inspection operation of the Dunsan 1T / L, the determination unit 140 may determine adjacent disconnectors (ie, 611, 612, and 616). ) Are all open (i.e., off), a simple alarm is considered. In the case of the adjacent breaker 6133, the determination unit 140 determines that the at least one of the adjacent disconnectors (ie, 6131 and 6132) is in a closed state (ie, on) and thus is a danger alert. Accordingly, the output unit 160 displays the circuit breaker 617 in yellow as a simple alarm, and displays the circuit breaker 6133 determined as a danger alarm in red.

As shown in FIG. 6, when the first bus # 1BUS is in a slanted state and the second bus # 2BUS is in a live state by a 154 kV gas inspection operation, the determination unit 140 performs a first bus # 1BUS. In the case of the gas exhaust state, it is determined as a simple alarm, and when the gas exhaust state in the second bus # 2BUS, it is determined as a danger alarm. Here, the determination unit 140 determines the live state of the first bus # 1BUS and the second bus based on the power of the current transformer PT. Accordingly, the output unit 160 displays the first bus line # 1BUS determined as a simple alarm in yellow, and displays the second bus line # 2BUS determined as a critical alarm in red.

The output unit 160 may output a simple alarm and a danger alarm through voice, text, buzzer, and the like. At this time, the output unit 160 divides the simple alarm and the danger alarm into different voices, different buzzers and outputs them.

The output unit 160 may transmit the information received from the detector 120 and the determiner 140 to the switchboard 300 located at a remote location. That is, in order to be able to check the operation state and the alarm occurrence of the gas insulated switchgear 200 of the substation in the remote switchboard 300 located in a remote location, a monitoring system (not shown, for example, MMI, HMI) in the switchboard 300 Etc.). The output unit 160 transmits an operation state of the gas insulated switchgear 200 and whether an alarm occurs to a monitoring system (not shown) installed in the switchboard 300. Accordingly, the operation state of the gas insulated switchgear 200 and the occurrence of an alarm are output in the same (or similar) form as the output unit 160 described in the monitoring system (not shown) installed in the switchboard 300.

To this end, as shown in FIG. 7, the output unit 160 outputs an operation state of the gas insulated switchgear 200, an alarm for outputting whether or not an alarm occurs in the gas insulated switchgear 200. And an output module 164 and a communication module 166 that transmits an operation state of the gas insulated switchgear 200 and whether an alarm is generated to a remote switchboard 300 (that is, a monitoring system (not shown)).

Hereinafter, a gas pressure monitoring method of a substation gas insulated switchgear according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 8 is a flowchart illustrating a gas pressure monitoring method of a substation gas insulated switchgear according to an embodiment of the present invention.

The detector 120 detects an operation state of the gas insulated switch 200 (S100). That is, the detector 120 detects the live state of the bus, the operating state of the disconnector and the breaker, the gas pressure of the gas insulated switch 200, and the like. The detector 120 transmits the detected operation state of the gas insulated switch 200 to the determination unit 140 and the output unit 160.

The output unit 160 outputs the operation state of the gas insulation switch 200 based on the operation state detected by the detection unit 120 (S200). That is, the output unit 160 displays the driving state of the disconnector, the breaker, the live state of the bus, and the like on the opening degree of the gas insulated circuit breaker based on the operation state received from the sensing unit 120.

The determination unit 140 determines whether an alarm occurs based on the operation state and the reference value detected by the detection unit 120 (S300). That is, the determination unit 140 determines whether an alarm of the gas insulated switchgear 200 is generated based on the live state of the bus, the operating state of the disconnector and the breaker, and whether the gas is exhausted according to the gas pressure. In this case, the determination unit 140 determines whether the alarm of the gas insulated switch 200 is one of a simple alarm and a danger alarm. Here, the determination unit 140 determines that the disconnection unit installed in the bus station in the truce state is an open (that is, off) state, and the gas is in a gas exhaust state formed with a reference value or less as a simple alarm. The determination unit 140 determines that the disconnection unit installed in the live bus state is an open (that is, off) state and that the gas is in a gas exhaust state formed with a gas pressure lower than or equal to the reference value. The determination unit 140 determines that all disconnectors adjacent to the breaker are in an open (ie, off) state and that the breaker is closed (ie, on), and thus a simple alarm. The determination unit 140 determines that at least one of the disconnectors adjacent to the breaker are all closed (ie, on), and that the corresponding breaker is a closed alarm (ie, on). The determination unit 140 determines a simple alarm when the bus is in the gas exhaust state in the truce state, and determines a danger alarm when the bus is in the gas exhaust state in the live state.

When the determination unit 140 determines that the simple alarm is generated (S400; YES), the output unit 160 displays the simple alarm generation section in the first color on the screen (S500). That is, the determination unit 140 transmits an alarm signal including section information (that is, a section to which a bus, a disconnector, and a breaker belongs) to the output unit 160 determined as the occurrence of a simple alarm. The output unit 160 displays a section in which a simple alarm occurs on the opening degree of the gas insulator based on the alarm signal received from the determination unit 140. In this case, the output unit 160 outputs the screen in a first color (for example, yellow).

If the determination unit 140 determines that the dangerous alarm has occurred (S600; yes), the output unit 160 displays the dangerous alarm generating section in the second color (S700). That is, the determination unit 140 transmits an alarm signal including the section information determined as the occurrence of the danger alert to the output unit 160. The output unit 160 outputs a screen in which the danger alarm occurs in the opening degree of the gas insulator based on the alarm signal received from the determination unit 140. In this case, the output unit 160 outputs the screen in a second predetermined color (for example, red color).

As described above, the gas pressure monitoring device and method of the substation gas insulated switch detects the operation state of the gas insulated switchgear and determines whether an alarm including a simple alarm and a danger alarm occurs, and determines the operation state and the simple alarm and the danger alarm. By outputting the screen, it is possible to prevent misoperation of the gas valve in the live section during the inspection and expansion work of the gas insulated switchgear, and to prevent the occurrence of regional power failure due to the misoperation of the gas valve.

In addition, the gas pressure monitoring device and method of the substation gas insulated switch detects the operation state of the gas insulated switchgear and determines whether an alarm including a simple alarm and a danger alarm occurs, and by outputting the operation state and the simple alarm and danger alarm screen However, there is an effect that can be monitored at all times by section.

In addition, the gas pressure monitoring device and method of the substation gas insulated switchgear transmits and displays the operation status and alarm occurrence of the gas insulated switchgear to a remote switchgear, so that cross-check with the site can be prevented, thereby preventing the operator from operating incorrectly. It has an effect.

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

100: gas pressure monitoring device 120: detector
122: bus detection module 124: disconnector detection module
126: breaker detection module 128: pressure detection module
140: determination unit 160: output unit
162: screen output module 164: alarm output module
166: communication module 200: gas insulated switchgear
300: switchboard

Claims (14)

Detecting unit for detecting the operating state of the gas insulated switchgear;
A determination unit determining whether an alarm of the gas insulated switch is generated based on an operation state and a reference value detected by the detection unit; And
An output unit for outputting the operation state of the gas insulated switchgear based on the operation state detected by the detection unit, and outputting the alarm generation in a color corresponding to the alarm generation level if the determination unit determines that the alarm has occurred. But
If the determination unit is the first disconnector is installed in the first bus line in the truce state and the gas exhaust state formed in the gas pressure is less than the reference value, it is determined as a simple alarm, the second disconnector is installed in the open second bus line If the gas pressure is less than the reference value gas exhaust state is determined as a danger alarm, the output unit in the opening degree of the gas insulated switchgear the section including the first disconnector and the section containing the second disconnector in different colors. Display screen separately
In the first breaker and the second breaker in the open state adjacent to each other, if the disconnectors adjacent to the first breaker are all open state is determined as a simple alarm, if at least one of the disconnectors adjacent to the second breaker is closed state Judging by a danger alarm, the output unit screen output by dividing the first circuit breaker and the second circuit breaker in different colors in the opening degree of the gas insulated switchgear,
The determination unit determines that a simple alarm when the first bus is in a truce state and the second bus is in a live state, and a gas exhaust state in the first bus line, and judges as a danger alarm when the gas is in the second bus state. The output unit gas pressure monitoring device of the substation gas insulated switchgear, characterized in that the screen output to distinguish the first bus and the second bus bar in different colors in the opening degree of the gas insulated switchgear. The method according to claim 1,
The detection unit,
A gas pressure monitoring device for a substation gas insulated switchgear, comprising: detecting an operating state including a live state of a bus, an operating state of a disconnector and a breaker, and a gas pressure of a gas insulated switchgear. delete delete delete delete delete Detecting, by the detection unit, an operating state of the gas insulated switchgear;
Outputting, by an output unit, an operation state of the gas insulated switchgear based on the operation state detected in the detecting step;
Determining, by the determiner, whether an alarm of the gas insulated switch is generated based on the operation state and a reference value detected in the detecting step; And
And outputting, by the output unit, the alarm occurrence in a color corresponding to the alarm occurrence level if it is determined that the alarm has occurred in the determining step.
In the determining step, if the first disconnector installed in the first bus station in the truce state is open and the gas exhaust state formed in the gas pressure is lower than the reference value, it is determined as a simple alarm, and the second disconnector installed in the live second bus is opened. State and the gas pressure is a gas exhaust state formed below a reference value, it is determined as a danger alarm, and in the outputting step, a section including the first disconnector and a section including the second disconnector in the opening degree of the gas insulated switchgear. The screen output is divided into different colors,
In the determining, in the first circuit breaker and the second circuit breaker adjacent to each other, if the disconnectors adjacent to the first breaker are all open, it is determined as a simple alarm, and at least one of the disconnectors adjacent to the second breaker is closed. In the outputting step, the first breaker and the second breaker are distinguished from each other by different colors in the opening degree of the gas insulated switchgear.
In the determining step, when the first bus is in a truce state and the second bus is in a live state, it is determined as a simple alarm when the gas is exhausted from the first bus, and when the gas is exhausted from the second bus, it is determined as a danger alarm. And outputting the screen by dividing the first bus line and the second bus line into different colors on the opening degree of the gas insulated switchgear.
The method according to claim 8,
In the detecting step,
The gas pressure monitoring method of the substation gas insulated switchgear by the detection unit, the operating state including the live state of the bus, the operating state of the disconnecting and breaker, the gas pressure of the gas insulated switchgear. delete delete delete delete delete

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