KR20160147077A - Gas low alarm system and gas low signal output device of gas insulated switchgear - Google Patents

Gas low alarm system and gas low signal output device of gas insulated switchgear Download PDF

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Publication number
KR20160147077A
KR20160147077A KR1020150082366A KR20150082366A KR20160147077A KR 20160147077 A KR20160147077 A KR 20160147077A KR 1020150082366 A KR1020150082366 A KR 1020150082366A KR 20150082366 A KR20150082366 A KR 20150082366A KR 20160147077 A KR20160147077 A KR 20160147077A
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KR
South Korea
Prior art keywords
gas
low pressure
insulated switchgear
gas low
zone
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Application number
KR1020150082366A
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Korean (ko)
Inventor
고상혁
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한국전력공사
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Priority to KR1020150082366A priority Critical patent/KR20160147077A/en
Publication of KR20160147077A publication Critical patent/KR20160147077A/en

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

The present invention relates to a gas low pressure alarm system of a gas insulated switchgear and a gas low pressure signal output device of the gas insulated switchgear. The gas low pressure alarm system comprises: a gas insulated switchgear including a sensor which detects gas pressure to detect lowering of gas pressure by each zone; a gas low pressure signal output device configured to receive a gas low pressure signal by each zone of the gas insulated switchgear per preset bay and configured to output a gas low pressure signal by each bay; and an upper control device configured to collect an output signal of the gas low pressure signal output device and output gas low pressure information of the gas insulated switchgear based on the collected output signal.

Description

TECHNICAL FIELD [0001] The present invention relates to a gas low voltage alarm system for a gas insulated switchgear, and a gas low voltage signal output device for a gas insulated switchgear,

The present invention relates to a gas low pressure alarm system for a gas insulated switchgear and a gas low pressure signal output device for a gas insulated switchgear. More particularly, the present invention relates to a gas low pressure alarm system for a gas insulated switchgear To a gas low-voltage signal output device of a gas insulated switchgear.

A gas insulated switchgear (GIS) is a device used to protect a power system of a substation. It performs the opening and closing operation of a line when the power system is in a steady state. In addition, And also safely protects the power system by safely opening and closing the line in response to the state.

This gas insulated switchgear has a structure that encloses switching devices such as breakers and disconnectors as well as transformers, lightning arresters, main circuit buses, etc. in a metal tank, and SF6 gas, which has excellent insulation performance and digestion ability, As shown in Fig.

The SF6 gas, which is used as an insulating gas for the gas insulated switchgear, destroys the ozone layer when released to the atmosphere. The carbon dioxide index is 23,900, which is recognized as a main cause of global warming. That is, if 1 g of SF6 gas leaks into the atmosphere, SF6 gas is managed on a global scale because 23,900 g of carbon dioxide can be leaked.

Such SF6 gas should maintain a proper density to maintain insulation of the energized portion of the gas insulated switchgear. Therefore, in order to detect the density of SF6 gas in a single gas space partitioned by a space in the gas insulated switchgear, it is common that a sensor capable of detecting the density of SF6 gas is installed in each single gas space (each partition).

That is, the gas insulated switchgear is divided into a plurality of gas compartments, and the gas low pressure alarm of the conventional gas insulated switchgear is such that SF6 gas filled at a high pressure in a single gas space of the gas insulated switchgear is leaked to the outside When the gas density of the space becomes low, a sensor installed in the gas insulated switch is made in such a manner that a low-pressure alarm is generated.

On the other hand, the background art of the present invention is disclosed in Korean Patent Publication No. 10-1983-0009613 (December 22, 1983).

It is an object of the present invention to provide a gas low-voltage alarm system for a gas insulated switchgear and a gas low-voltage signal output device for a gas insulated switchgear which can observe a gas low-voltage alarm of a gas insulated switchgear by specific zones.

A gas low pressure alarm system of a gas insulated switchgear according to the present invention includes a gas insulated switchgear including a sensor for sensing a gas pressure to detect a decrease in gas pressure in each compartment; A gas low pressure signal output device for receiving a gas low pressure signal for each zone of the gas insulated switchgear for each preset bay and outputting a gas low pressure signal for each zone; And an upper control device for collecting an output signal of the gas low pressure signal output device and outputting a gas low pressure alarm of the gas insulated switch based on the collected output signal.

In the present invention, the preset zone includes at least one of a disconnecting switch zone and a circuit breaker zone.

The gas low-voltage signal output device of the gas insulated switch according to the present invention includes an input part for receiving the gas low-voltage signal of each compartment output from the gas insulated switch according to preset bay; An output unit for outputting a gas low pressure signal for each zone to an upper control unit; And at least one relay for controlling an output of the output unit according to a signal inputted through the input unit.

In the present invention, the relays are provided by the number of the preset zones.

The gas low-voltage signal output device according to the present invention is characterized in that a magnet for detachably attaching the gas low-voltage signal output device is provided on one surface of the gas low-voltage signal output device.

The gas low pressure alarm system of the gas insulated switchgear according to the present invention and the gas low pressure signal output device of the gas insulated switchgear collect the gas low pressure signal of each section of the gas insulated switchgear according to the preset bay, Signal is output so that the gas low-voltage alarm of the gas insulated switchgear can be monitored by specific zones, thereby improving the reliability of the operation of the substation.

1 is a block diagram showing a configuration of a gas low pressure alarm system of a gas insulated switchgear according to an embodiment of the present invention.
2 is a block diagram showing the configuration of a gas low-voltage signal output device of a gas insulated switchgear according to an embodiment of the present invention.
3 is a diagram illustrating a circuit configuration of a gas low-voltage signal output device of a gas insulated switchgear according to an embodiment of the present invention.
4 is an exemplary view for explaining a detachable structure of a gas low pressure signal output device of a gas insulated switchgear according to an embodiment of the present invention.

Hereinafter, an embodiment of a gas low pressure alarm system for a gas insulated switchgear and a gas low pressure signal output device for a gas insulated switchgear according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a block diagram showing the configuration of a gas low pressure alarm system of a gas insulated switchgear according to an embodiment of the present invention. Referring to FIG. 1, a gas low pressure alarm system of a gas insulated switchgear according to this embodiment will be described as follows .

1, the gas low pressure alarm system of the gas insulated switch according to an embodiment of the present invention includes gas insulated switches 200 to 202, gas low pressure signal output devices 100 to 102, and an upper control device 300 ).

The gas insulated switchgear 200 to 202 may include a sensor for sensing a gas pressure to detect a decrease in the gas pressure of each compartment. For example, the gas insulated switchgear 200 to 202 may have a sensor capable of sensing the density of gas in each compartment, and if a pressure drop is detected according to the measured value from the sensor, A control signal can be output.

The gas low pressure signal output apparatuses 100 to 102 can receive the gas low pressure signal for each compartment of each gas insulated switchgear 200 to 202 for each preset bay. That is, one gas insulated switch can be divided into a plurality of gas compartments, and in order to be able to confirm the generation of a low pressure of gas in a certain compartment, do.

However, when the divided circuits are directly connected to the upper control device 300, a very large number of relays must be additionally installed, which increases the cost of complicated wiring. Accordingly, in the gas low pressure alarm system of the gas insulated switchgear according to the present embodiment, the gas low pressure signals of the respective compartments of the gas insulated switches 200 to 202 are grouped and detected by the preset zones through the gas low pressure signal output devices 100 to 102 .

The predetermined area may be classified according to functional components of the gas insulated switchgear 200 to 202. For example, such preset zones can be divided into disconnecting switch zones, circuit breaker zones, and the like. That is, by dividing the segments including the disconnecting unit into one zone, it is possible to commonly detect the gas low pressure signal, thereby reducing the data processing amount and reducing the cost due to wiring and the like.

That is, the gas low pressure signal output devices 100 to 102 can output the gas low pressure signal for each zone to the host controller 300 according to the input signal.

The host control apparatus 300 may collect the output signals of the gas low pressure signal output apparatuses 100 to 102 and output a gas low pressure alarm of the gas insulated switchgear based on the collected output signals. That is, the upper control device 300 collects gas low pressure signals for each zone from the plurality of gas low pressure signal output devices 100 to 102 to the respective gas insulated switches 200 to 202, And the area can be confirmed, and it can be informed to the facility manager so that maintenance can be easily performed. At this time, the facility manager can check which function of the gas insulated switcher has caused the problem (since the area of the gas insulated switchgear can be classified according to the functional components of the gas insulated switchgear), maintenance of the gas insulated switchgear Can be performed accurately. Therefore, the gas low pressure alarm system of the gas insulated switchgear according to the present embodiment can improve the reliability of the substation operation.

In the present embodiment, Supervisory Control And Data Acquisition (SCADA) may be employed as the host controller 300. SCADA is a type of industrial control system that collects status information of remote devices by using analog or digital communication and analyzes the collected status information by central control system to monitor and control remote devices System, and generally refers to a system that centrally monitors and controls various types of remote facilities such as power generation facilities, substation, transmission and distribution systems, as well as petrochemical plants, steel process facilities, and factory automation facilities .

FIG. 2 is a block diagram showing the configuration of a gas low-voltage signal output device of a gas insulated switchgear according to an embodiment of the present invention, and FIG. 3 is a block diagram of a gas low-voltage signal output device of a gas insulated switchgear according to an embodiment of the present invention. 4 is a diagram illustrating an attachment / detachment structure of a gas low pressure signal output device of a gas insulated switchgear according to an embodiment of the present invention. Referring to FIG. 4, a gas insulated switchgear The gas low-voltage signal output device of the present invention will be described.

2, the gas low voltage signal output apparatus of the gas insulated switch according to the embodiment of the present invention includes an input unit 110, relays 120 and 121, and an output unit 130. [

The input unit 110 may receive the gas low pressure signal of each compartment output from the gas insulated switch by the preset bay. The zones previously set may be classified according to functional components of the gas insulated switchgear 200 to 202. For example, such preset zones can be divided into disconnecting switch zones, circuit breaker zones, and the like.

The output unit 130 may output the gas low pressure signal for each zone to the host controller 300. That is, when a gas low-pressure signal for a specific zone is to be output according to a signal input through the input unit 110, the output unit 130 may output a gas low-pressure signal for the zone to the upper- . At this time, the operation of the output unit 130 can be controlled by the relays 120 and 121, and Supervisory Control And Data Acquisition (SCADA) or the like can be employed as the upper controller 300.

The relays 120 and 121 may control the output of the output unit 130 according to a signal input through the input unit 110. [ 3, the relays 120 and 121 can automatically control the signal output of the output unit 130 in accordance with the signal input through the input unit 110. That is, as shown in FIG. In other words, the relays 120 and 121 may cause the output unit 130 to output a gas low pressure signal for each zone in accordance with the input through the input unit 110, and these relays 120 and 121 may be initialized As shown in FIG.

On the other hand, as shown in FIG. 4, a magnet may be provided on one side of the gas low pressure signal output device of the gas insulated switch according to the present embodiment so as to attach and detach the gas low pressure signal output device. That is, the gas low-voltage signal output device of the gas insulated switchgear according to the present embodiment can be designed in the form of a PCB module, and can be designed to be easily attached to a desired position through a permanent magnet such as a neodymium magnet.

As described above, the gas low-voltage alarm system of the gas insulated switchgear and the gas low-voltage signal output apparatus of the gas insulated switchgear collect gas low-voltage signals of each compartment of the gas insulated switchgear according to predetermined bay, By outputting gas low pressure signal for each zone, gas low pressure alarm of gas insulated switchgear can be monitored by specific zone, so that reliability of operation of substation can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the technical scope of the present invention should be defined by the following claims.

100, 101, 102: gas low pressure signal output device
110: input unit
120, 121: Relay
130:
200, 201, 202: gas insulated switchgear
300: upper control device

Claims (6)

A gas insulated switch capable of detecting a decrease in gas pressure of each compartment, including a sensor for sensing gas pressure;
A gas low pressure signal output device for receiving a gas low pressure signal for each zone of the gas insulated switchgear for each preset bay and outputting a gas low pressure signal for each zone; And
And an upper control device for collecting an output signal of the gas low pressure signal output device and outputting a gas low pressure alarm of the gas insulated switch based on the collected output signal.
The method according to claim 1,
Wherein the pre-set zone comprises at least one of a disconnecting switch zone and a circuit breaker zone.
An input unit for receiving the gas low pressure signal for each zone output from the gas insulated switchgear for each preset bay;
An output unit for outputting a gas low pressure signal for each zone to an upper control unit; And
And at least one relay for controlling an output of the output unit in accordance with a signal input through the input unit.
The method of claim 3,
Wherein the relay is provided for the number of the preset zones.
The method of claim 3,
Wherein the pre-set zone comprises at least one of a disconnecting switch zone and a circuit breaker zone.
The method of claim 3,
Wherein the gas low-voltage signal output device is provided on one surface thereof with a magnet for detachably attaching the gas low-voltage signal output device.
KR1020150082366A 2015-06-11 2015-06-11 Gas low alarm system and gas low signal output device of gas insulated switchgear KR20160147077A (en)

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KR1020150082366A KR20160147077A (en) 2015-06-11 2015-06-11 Gas low alarm system and gas low signal output device of gas insulated switchgear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150082366A KR20160147077A (en) 2015-06-11 2015-06-11 Gas low alarm system and gas low signal output device of gas insulated switchgear

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KR20160147077A true KR20160147077A (en) 2016-12-22

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