KR20140143872A - Apparatus and method for monitoring gas pressure of gis(gas insulated switchgear) in substation - Google Patents

Abstract

The present invention provides an apparatus and a method for monitoring the gas pressure of gas-insulated switchgear in a substation, wherein the apparatus detects the operating status of the gas-insulated switchgear, determines whether to generate an alarm including a simple alarm and a danger alarm, and displays the operating status and the simple and danger alarms on a screen, thereby preventing human errors and erroneous operation of a gas valve in a live wire region. The apparatus for monitoring the gas pressure of gas-insulated switchgear in a substation comprises: a detection part to detect the operating status of the gas-insulated switchgear; a determination part to determine whether to generate an alarm for the gas-insulated switchgear based on the operating status detected by the detection part and a reference value; and an output part to display the operating status of the gas-insulated switchgear on the screen based on the operating status detected by the detection part, and to display the generation of an alarm on the screen using a color corresponding to the level of the generated alarm, if the determination part determines to generate the alarm.

Description

TECHNICAL FIELD [0001] The present invention relates to a gas pressure monitoring apparatus and method for a substation gas insulated switchgear,

The present invention relates to an apparatus and a method for monitoring a gas pressure of a substation gas insulated switchgear, and more particularly, to a gas pressure monitor apparatus and method for monitoring a gas pressure of a substation gas insulated switchgear, And an apparatus and method for monitoring the gas pressure of an insulating switch.

The electric power system is becoming large capacity and super high pressure due to the rapid increase of electric power demand due to the development of the industry. Accordingly, maintaining stability and reliability of electric power facilities at a certain level or more is becoming a big issue. For this purpose, the installation of ultra high voltage substation facilities is increasing, but in the case of substation facilities, the volume is so large that it is difficult to secure paper, increase maintenance costs, and secure stability.

Accordingly, a gas insulated switchgear (GIS) having a reduced volume has been developed and installed. The gas insulated switchgear is a switchgear, disconnector and other switchgear, switchgear, lightning arrester, and main circuit bus. In this case, the inside of the metal tank is filled with the SF6 gas excellent in the insulating performance and the SOHO capability as the insulating medium. For example, Korean Patent Laid-Open Publication No. 10-2013-0017612 (name: gas insulated switchgear) is available.

Meanwhile, a monitoring device for monitoring the pressure of SF6 filled in the tank of the gas insulated switchgear is operated. The monitoring device monitors the pressure of SF6 and outputs an alarm when an error occurs. However, the conventional surveillance apparatus only generates an alarm in the form of a text, so that there is a problem in that it is impossible to grasp an accurate abnormal point in a power supply branch (that is, an unmanned substation).

In addition, there is no stabilizing device corresponding to the abnormality of the conventional monitoring device gas recovery, and when the gas insulated switchgear for the extension and the inspection of the substation is shut down, a fault occurs due to the gas exhaust at the live- There is a problem that a power failure occurs.

Disclosure of Invention Technical Problem [8] The present invention has been proposed in order to solve the above-described problems, and it is an object of the present invention to provide a gas insulated switchgear which detects an operation state of a gas insulated switchgear to determine whether an alarm including a simple alarm and a critical alarm is generated, A gas pressure monitoring device and a method of monitoring the gas pressure of a substation gas insulated switchgear which are capable of preventing human errors and preventing misoperation of live gas valves.

According to an aspect of the present invention, there is provided an apparatus for monitoring a gas pressure of a substation gas insulated switch, including: a sensing unit for sensing an operation state of the gas insulated switch; A determination unit for determining whether an alarm of the gas insulated switch is generated based on the operation state and the reference value sensed by the sensing unit; And an output unit for outputting an operation state of the gas insulated switchgear on the basis of an operation state sensed by the sensing unit and outputting an alarm occurrence to a color corresponding to the alarm generation level when the determination unit determines that an alarm is generated.

The sensing unit senses the operating state including the busheat line state, the disconnector and the breaker operating state, and the gas pressure of the gas insulated switchgear.

The determination unit determines whether or not one alarm is generated during the simple alarm and the critical alarm based on the operation state and the reference value and transmits an alarm signal including the alarm occurrence period information to the output unit when it is determined that the alarm is generated.

The judging unit judges whether the disconnected state of the breaker installed in the breakdown state is an open state and the gas pressure is equal to or lower than a reference value in a gas exhaust state or both disconnectors adjacent to the breaker are open and the breaker is in a closed state, If it is a simple alarm.

The judging unit judges that the disconnecting unit provided on the live bus line is in the open state and the gas exhausting state or that at least one of the disconnecting units adjacent to the circuit breaker in the closed state is in the closed state or the bus line is in the gas exhaust state in the live state .

If the gas pressure of the gas insulated switch included in the operating state is lower than the reference value, the judging unit judges the gas exhaust state.

The output unit displays a section where a simple alarm or a danger alarm occurs on the screen based on the alarm signal transmitted from the determination unit, and displays the section in which the simple alarm occurs and the section in which the danger alarm occurs in different colors.

The output unit transmits the operation state and whether or not an alarm is generated to the remote switchboard.

According to an aspect of the present invention, there is provided a method of monitoring a gas pressure of a substation gas insulated switchgear, comprising: sensing an operation state of a gas insulated switchgear by a sensing unit; Outputting an operation state of the gas insulated switchgear on the basis of the operation state sensed by the output unit; Determining whether an alarm of the gas insulated switch is generated based on the operation state and the reference value sensed by the determination unit; And outputting an alarm occurrence to the color corresponding to the alarm occurrence level when the output unit determines that the alarm is generated in the determining step.

In the sensing step, the sensing unit senses the operating state including the busheat line state, the disconnector and the breaker operating state, and the gas pressure of the gas insulated switchgear.

Determining whether one alarm is generated during the simple alarm and the critical alarm based on the operation state and the reference value by the determination unit; And outputting an alarm signal including alarm occurrence period information when the determination unit determines that an alarm has occurred in the determining step.

In the judging step, it is judged by the judging unit whether the disconnection unit provided on the bus line that is in the interruption state is in the open state and the gas pressure is the gas exhaust state in which the gas pressure is less than or equal to the reference value, or the disconnectors adjacent to the breaker are both open and the breaker is in the closed state, If it is in the state of gas exhaust in the rest state, it is judged as a simple alarm.

In the judging step, it is judged by the judging section that at least one of the isolators provided on the bus bar which is in the live state is in the open state and the gas exhaust state or the disconnectors adjacent to the circuit breaker in the closed state are both closed, State, it is judged as a danger warning.

In the judging step, when the gas pressure of the gas insulated switch included in the operating state is equal to or lower than the reference value, the judging unit judges the gas exhaust state.

In the outputting step, the output unit outputs a screen in which a simple alarm or a critical alarm is generated based on the alarm signal transmitted from the determination unit, and a section in which a simple alarm occurs and a section in which a critical alarm occurs are classified into different colors And outputs it to the screen.

And transmitting, by the output unit, an operation state and an alarm occurrence to the remote switchboard.

According to the present invention, an apparatus and method for monitoring a gas pressure of a substation gas insulated switchgear detects an operation state of a gas insulated switchgear to determine whether an alarm including a simple alarm and a critical alarm is generated, By displaying on the screen, it is possible to prevent the occurrence of wide-area power failure due to the misoperation of the gas valve, and to prevent the gas valve erroneous operation of the active section during the inspection and the extension work of the gas insulated switchgear.

Also, the apparatus and method for monitoring the gas pressure of a substation gas insulated switchgear detects the operation state of the gas insulated switchgear to determine whether an alarm including a simple alarm and a critical alarm is generated, and displays an operation state, a simple alarm, , It is possible to monitor the sections at all times.

In addition, the apparatus and method for monitoring the gas pressure of a substation gas insulated switchgear can display the operation status of the gas insulated switchgear and the occurrence of an alarm to the remote switchboard panel, There is an effect.

1 is a view for explaining a gas pressure monitoring apparatus of a substation gas insulated switch according to an embodiment of the present invention.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a gas pressure monitoring apparatus for a substation gas insulated switchgear.
3 is a view for explaining the sensing unit of FIG. 2;
Figs. 4 to 7 are views for explaining the output unit of Fig. 2; Fig.
8 is a flowchart illustrating a method of monitoring a gas pressure of a substation gas insulated switch according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to facilitate a person skilled in the art to easily carry out the technical idea of the present invention. . In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Hereinafter, a gas pressure monitoring apparatus for a substation gas insulated switch according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a view for explaining a gas pressure monitoring apparatus for a substation gas insulated switch according to an embodiment of the present invention. FIG. 2 is a view for explaining a configuration of a gas pressure monitoring apparatus for a substation gas insulated switch according to an embodiment of the present invention Fig. FIG. 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.

1, a gas pressure monitoring apparatus 100 (hereinafter, referred to as a 'gas pressure monitoring apparatus 100') of a substation gas insulated switch detects and outputs an operating state of the gas insulated switchgear 200. As shown in FIG. The gas pressure monitoring apparatus 100 transmits the detected operating state of the gas insulated switchgear 200 to the switchboard 300 (i.e., the power supply unit, the centralized monitoring control panel). 2, the gas pressure monitoring apparatus 100 includes a sensing unit 120, a determination unit 140, and an output unit 160. As shown in FIG.

The sensing unit 120 senses the operation state of the gas insulated switch 200. At this time, the sensing unit 120 senses the live line state of the bus, the operation state of the disconnecting unit and the breaker, the gas pressure of the gas insulated switchgear 200, and the like. 3, the sensing unit 120 includes a bus detection module 122 for sensing the live state of the busbars of the gas insulated switchgear 200, an operation state (i.e., on / off) of the disconnector A breaker detection module 126 for detecting the operating state of the circuit breaker (i.e., on / off), and a pressure sensing module 128 for sensing the gas pressure of the gas insulated switch 200 .

The sensing unit 120 transmits the sensed operating state of the gas insulated switch 200 to the determining unit 140 and the output unit 160. That is, the sensing unit 120 transmits to the determining unit 140 and the output unit 160 an operating state including the live line state of the buses, the operating state of the breaker and the breaker, and the gas pressure.

The determination unit 140 determines whether or not the alarm of the gas insulated switch 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 or not the alarm of the gas insulated switch 200 is generated based on the active state of the bus, the operating state of the breaker and the breaker, and whether the gas is exhausted according to the gas pressure. At this time, the determination unit 140 determines whether the alarm of the gas insulated switch 200 is generated as one of a simple alarm and a danger warning. Here, the determination unit 140 determines that the disconnector provided on the bus line that is in the off state is in the open (i.e., OFF) state and is a simple alarm when the gas pressure is in the gas exhaust state formed below the reference value. The determination unit 140 determines that the disconnector provided on the bus line is in an open (i.e., OFF) state and is in a gas alarm state in which the gas pressure is lower than the reference value. The determination unit 140 determines that the disconnectors adjacent to the breaker are all open (i.e., off) and that the breaker is a simple alarm when the breaker is closed (i.e., turned on). The determination unit 140 determines that at least one of the disconnectors adjacent to the circuit breaker is in a closed (i.e., ON) state and the circuit breaker is in a closed (i.e., ON) state. The determination unit 140 determines that the bus is a simple alarm if the bus is in a state of gas escape from a rest state and determines that it is a critical alarm if the bus is in a gas exhaust state.

The determination unit 140 transmits to the output unit 160 whether the alarm is generated. That is, when the simple alarm or the critical alarm occurs, the determination unit 140 transmits an alarm signal including the corresponding interval information (i.e., the bus line, the disconnector, and the interval to which the breaker belongs) to the output unit 160.

The output unit 160 outputs the operation state of the gas insulated switch 200 on the basis of the operation state received from the sensing unit 120. At this time, the output unit 160 displays a driving state of a disconnecting switch, a breaker, and the like on the opening degree of the gas insulated switchgear on the basis of the operation state received from the sensing unit 120, and the live state of the bus.

The output unit 160 outputs an alarm generated by the gas insulated switch 200 on the basis of the alarm signal transmitted from the determination unit 140. That is, the output unit 160 displays a section where a simple alarm or a danger alarm occurs in the opening degree of the gas circulation system disposal on the basis of the alarm signal transmitted from the determination unit 140. At this time, the output unit 160 divides the simple alarm and the danger alarm into different colors for quick identification of the operator (or manager).

For example, as shown in Fig. 4, when the first bus line # 1BUS is in the resting state (i.e., diagonal line) due to the interruption of the first disconnector 611 of the first T / L, The determination unit 140 determines that the first disconnector 611 is a simple alarm if the first disconnector 611 is in the open (i.e., OFF) state and the gas exhaust state, and the second disconnector 612 is open OFF) state and the gas exhaust state, it is judged as a danger warning. Here, the determination unit 140 determines the live state of the first bus line # 1BUS and the second bus line # 2BUS based on the power source of the current transformer PT. Accordingly, the output unit 160 displays the section determined as a simple alarm (i.e., the section including the first disconnector 611) in yellow, and the section determined as a danger alarm (i.e., the second disconnector 612 includes Is displayed in red.

5, when the breaker 617 is in the open (i.e., off) state due to the gas inspecting operation of the first T / L suspended, the judging unit 140 judges that the adjacent disconnectors (i.e., 611, 612, 616 ) Are both open (i.e., off), it is determined that the alarm is a simple alarm. In the case of the adjacent circuit breaker 6133, the determination unit 140 determines that at least one of the adjacent disconnectors (i.e., 6131 and 6132) is in a closed (i.e. Accordingly, the output unit 160 displays the circuit breaker 617 in yellow with the simple alarm and the circuit breaker 6133 judged as the critical alarm in red.

6B, when the first bus line # 1BUS is oblique and the second bus line # 2BUS is in the live line state, the determination unit 140 determines that the first bus line # , It is judged as a simple alarm if it is in the gas exhaust state, and it is judged as a danger warning if it is in the gas exhaust state in the second bus line (# 2BUS). Here, the determination unit 140 determines the live state of the first bus line # 1 BUS and the second bus line based on the power of the current transformer PT. Accordingly, the output unit 160 displays the first bus # 1 BUS determined as a simple alarm in yellow and the second bus # 2 BUS determined as a critical alarm in red.

The output unit 160 may output simple alarms and critical alarms through voice, text, buzzer, and the like. At this time, the output unit 160 divides the simple alarm and the critical alarm into different sound and buzzer of different sound.

The output unit 160 may transmit information received from the sensing unit 120 and the determination unit 140 to the switchboard 300 located at a remote place. That is, a monitoring system (not shown, for example, MMI, HMI, etc.) is installed on the switchboard 300 in order to check the operation state and alarm occurrence of the gas insulated switchgear 200 of the substation in the switchboard 300, Etc.). The output unit 160 transmits the operation status of the gas insulated switch 200 and whether an alarm is generated to the monitoring system (not shown) installed in the switchboard 300. Accordingly, the operation state of the gas insulated switch 200 and whether an alarm is generated are output in the form (or similar) to the output unit 160 described in the monitoring system (not shown) installed in the switchboard 300.

7, the output unit 160 includes a screen output module 162 for outputting the operation state of the gas insulated switch 200, an alarm outputting alarm for generating the alarm of the gas insulated switch 200, The output module 164 and the communication module 166 for transmitting the operation status of the gas insulated switch 200 and the alarm occurrence to the switchboard 300 (i.e., a monitoring system (not shown)) at a remote place.

Hereinafter, a gas pressure monitoring method of a substation gas insulated switch 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 method of monitoring a gas pressure of a substation gas insulated switch according to an embodiment of the present invention.

The sensing unit 120 senses the operation state of the gas insulated switch 200 (S100). That is, the sensing unit 120 senses the live line state of the bus, the operation state of the disconnecting unit and the breaker, the gas pressure of the gas insulated switchgear 200, and the like. The sensing unit 120 transmits the sensed operating state of the gas insulated switch 200 to the determining unit 140 and the output unit 160.

The output unit 160 displays the operation state of the gas insulated switch 200 on the basis of the operation state sensed by the sensing unit 120 (S200). That is, the output unit 160 displays a driving state of a disconnecting switch, a breaker, and the like on the opening degree of the gas insulated switchgear on the basis of the operation state received from the sensing unit 120, and the live state of the bus.

The determination unit 140 determines whether an alarm is generated based on the operation state and the reference value sensed by the sensing unit 120 (S300). That is, the determination unit 140 determines whether or not the alarm of the gas insulated switch 200 is generated based on the active state of the bus, the operating state of the breaker and the breaker, and whether the gas is exhausted according to the gas pressure. At this time, the determination unit 140 determines whether the alarm of the gas insulated switch 200 is generated as one of a simple alarm and a danger warning. Here, the determination unit 140 determines that the disconnector provided on the bus line that is in the off state is in the open (i.e., OFF) state and is a simple alarm when the gas pressure is in the gas exhaust state formed below the reference value. The judging unit 140 judges that the disconnector provided in the active bus line is in the open (i.e., OFF) state and is in the dangerous state if the gas pressure is less than the reference value. The determination unit 140 determines that the disconnectors adjacent to the breaker are all open (i.e., off) and that the breaker is a simple alarm when the breaker is closed (i.e., turned on). The determination unit 140 determines that at least one of the disconnectors adjacent to the circuit breaker is in a closed (i.e., ON) state and the circuit breaker is in a closed (i.e., ON) state. The determination unit 140 determines that the bus is a simple alarm if the bus is in a state of gas escape from a rest state and determines that it is a critical alarm if the bus is in a gas exhaust state.

If the determination unit 140 determines that a simple alarm has occurred (S400; YES), the output unit 160 displays a simple alarm occurrence period on a screen in a first color (S500). That is, the determination unit 140 transmits an alarm signal to the output unit 160 including the interval information determined as the occurrence of the simple alarm (i.e., the interval in which the bus, the disconnector, and the breaker are included). The output unit 160 displays a section in which the simple alarm occurs in the opening degree of the gas insulation system disposal on the basis of the alarm signal transmitted from the determination unit 140. At this time, the output unit 160 outputs the image in a predetermined first color (for example, yellow).

If the determination unit 140 determines that a danger alarm has occurred (S600; YES), the output unit 160 displays the danger alert occurrence period as a second color (S700). That is, the determination unit 140 transmits to the output unit 160 an alarm signal including the period information determined as the occurrence of the critical alarm. The output unit 160 outputs a screen in which the danger alarm is generated on the basis of the alarm signal transmitted from the determination unit 140 in the opening degree of the gas insulation system disposal screen. At this time, the output unit 160 outputs the image in a predetermined second color (for example, red).

As described above, the apparatus and method for monitoring the gas pressure of a substation gas insulated switchgear detects the operation status of the gas insulated switchgear to determine whether or not an alarm including a simple alarm and a danger alarm is generated, By displaying on the screen, it is possible to prevent the occurrence of wide-area power failure due to the misoperation of the gas valve, and to prevent the gas valve erroneous operation of the active section during the inspection and the extension work of the gas insulated switchgear.

Also, the apparatus and method for monitoring the gas pressure of a substation gas insulated switchgear detects the operation state of the gas insulated switchgear to determine whether an alarm including a simple alarm and a critical alarm is generated, and displays an operation state, a simple alarm, , It is possible to monitor the sections at all times.

In addition, the apparatus and method for monitoring the gas pressure of a substation gas insulated switchgear can display the operation status of the gas insulated switchgear and the occurrence of an alarm to the remote switchboard panel, There is an effect.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but many variations and modifications may be made without departing from the scope of the present invention. It will be understood that the invention may be practiced.

100: gas pressure monitoring device 120: sensing part
122: Busbone detection module 124: Disconnection detection module
126: Breaker detection module 128: Pressure detection module
140: Judgment section 160: Output section
162: Display output module 164: Alarm output module
166: Communication module 200: Gas insulated switchgear
300: Switchboard

Claims (14)

A sensing unit for sensing an operation state of the gas insulated switch;
A determination unit for determining whether an alarm is generated in the gas insulated switch based on the operation state and the reference value sensed by the sensing unit; And
And an output unit for outputting the operation status of the gas insulated switchgear on the basis of the operation state sensed by the sensing unit and outputting the alarm occurrence on the screen in a color corresponding to the alarm generation level when the determination unit determines that the alarm is generated Wherein the gas pressure monitoring device comprises: The method according to claim 1,
The sensing unit includes:
Wherein the operating state of the gas insulated switch is detected by detecting an operating state including a live wire state of a bus, an operating state of a disconnecting device and a breaker, and a gas pressure of the gas insulated switchgear. The method according to claim 1,
Wherein,
Wherein the control unit determines whether or not one alarm is generated during the simple alarm and the critical alarm based on the operation state and the reference value, and transmits an alarm signal including the alarm occurrence period information to the output unit when it is determined that the alarm is generated. Gas pressure monitoring device for gas insulated switchgear. The method according to claim 1,
Wherein,
If the breaker installed in the breakdown state is in the open state and the gas pressure is below the reference value, or if the disconnectors adjacent to the breaker are both open and the breaker is closed, or if the bus is in gas- And the gas pressure monitoring device further comprises: The method according to claim 1,
Wherein,
Characterized in that it is determined as a danger warning if at least one of the isolators provided in the bus line in the live state is in the open state and the gas exhaust state or in the closed state adjacent to the circuit breaker is in the closed state or the bus line is in the gas- Gas pressure monitoring device for substation gas insulated switches. The method according to claim 1,
The determination unit
And determines that the gas is in a gas exhaust state when the gas pressure of the gas insulated switch included in the operating state is lower than a reference value. The method according to claim 1,
The output unit includes:
A simple alarm or a danger alarm is generated on the basis of the alarm signal transmitted from the judging unit,
Wherein a section where the simple alarm occurs and a section in which the danger alarm occurs are classified into different colors and displayed on a screen. Sensing the operating state of the gas insulated switch by the sensing unit;
Outputting an operating state of the gas insulated switchgear on the basis of the operating state sensed by the output unit;
Determining whether an alarm has occurred in the gas insulated switchgear based on the operation state and the reference value sensed in the sensing step; And
And outputting the generated alarm in a color corresponding to an alarm generation level when the output unit determines that an alarm is generated in the determining step. The method of claim 8,
In the sensing step,
Wherein the sensing unit senses an operating state including a live line state of the bus bar, an operating state of the disconnecting unit and the breaker, and a gas pressure of the gas insulated switchgear. The method of claim 8,
In the determining,
Determining whether one alarm is generated during the simple alarm and the critical alarm based on the operation state and the reference value by the determination unit; And
And outputting an alarm signal including alarm occurrence period information when the determination unit determines that an alarm has occurred in the determining step. The method of claim 8,
In the determining,
The judging unit judges whether the breaker provided in the breaker state is in the open state and the gas pressure is in the gas exhaust state in which the gas pressure is lower than the reference value or the disconnectors adjacent to the breaker are both opened and the breaker is in the closed state, And if it is in a gas exhaust state, it is determined to be a simple alarm. The method of claim 8,
In the determining,
If the disconnecting unit provided on the bus bar that is in the live state is in the open state and the gas exhausting state or at least one of the disconnectors adjacent to the closed circuit unit is in the closed state or the bus line is in the gas exhaust state in the live state, The method comprising the steps of: The method of claim 8,
In the determining,
Wherein the determination unit determines that the gas is in a gas exhaust state if the gas pressure of the gas insulated switch included in the operating state is less than a reference value. The method of claim 8,
In the outputting step,
The output unit displays a section in which a simple alarm or a danger alarm is generated on the basis of the alarm signal transmitted from the determination unit and displays a section in which a simple alarm occurs and a section in which a danger alarm occurs in different colors, The gas pressure of the substation gas insulated switch.

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