Apparatus for reconfirming gas low alarm of gas insulated switchgear

Abstract

The present invention relates to a gas low alarm reconfirmation device for a gas-insulated switchgear, and is characterized by comprising: a signal input module that receives a signal indicating whether a plurality of busbars are live, a DS gas low signal indicating whether gas-insulated switchgear connected to each busbar is gas low, and a signal recognizing the gas low operation state from a user; a processing module that collects signals input from the signal input module to check whether a gas low signal of any one gas-insulated switchgear is input and checks whether the busbar connected to any one gas-insulated switchgear to which the gas low signal is input is in a live state; and an alarm output module that repeatedly outputs a gas low alarm according to the check result of the processing module to the screen of a monitoring device at designated times.

Description

Technology Field

[0001] The present invention relates to a gas low alarm reconfirmation device for a gas-insulated switch that distinguishes between live and dead line conditions, and more specifically, to a gas low alarm reconfirmation device for a gas-insulated switch that distinguishes between live and dead line conditions, which periodically re-generates a gas low alarm until a user recognizes and confirms the gas low event when a gas low occurs in the dead line and live line sections of a gas-insulated switch (GIS). Background Technology

[0002] Generally, to supply electricity generated at a power plant, transmission lines are required to supply high-voltage, high-power electricity from the power plant to a substation, and transmission and distribution lines that convert the power at the substation into low-voltage, low-power electricity and supply it to consumers. The distribution system refers to the area after the substation and consists of distribution lines, switches, and consumers.

[0003] As distribution systems become more complex and the number of consumers increases, it is inevitable to expand equipment to secure load switching capabilities and establish measures to resolve overloaded lines. The initial equipment scale for a substation construction consists of two banks of main transformers and four to five distribution lines, and it is common to install five to six gas-insulated switchgear in one bank of transformers.

[0004] Gas Insulated Switchgear (GIS) seals the entire charging section with sulfur hexafluoride (SF6) gas, which has excellent insulation performance, and manages it by separating it into several independent gas compartments depending on the manufacturer.

[0005] If an accident occurs in such a gas-insulated switchgear (GIS), the ripple effect is extensive, resulting in massive economic losses and psychological distress; therefore, high reliability is required for the operation of gas-insulated switchgear.

[0006] Meanwhile, in the case of gas-insulated switchgear (GIS) replacement work, many alarms are activated and deactivated during the construction period, increasing the fatigue of users (i.e., workers) in checking alarms, and it is difficult to accurately confirm when a gas low alarm of the gas-insulated switchgear (GIS) occurs along with other event alarms.

[0007] In addition, there was no method to actively respond to gas low events in live-line gas-insulated switchgear (GIS), even though gas low events in live-line gas-insulated switchgear (GIS) could lead to serious failures.

[0008] The background technology of the present invention is disclosed in Korean Registered Patent No. 10-1787109 (October 11, 2017). The problem to be solved

[0009] According to one aspect of the present invention, the present invention is created to solve the above-mentioned problems and aims to provide a gas low alarm reconfirmation device for a gas-insulated switchgear (GIS) and a control method thereof, which periodically re-generates a gas low alarm until a user recognizes and confirms the gas low event when a gas low occurs in a dead line section and a live line section of the gas-insulated switchgear (GIS). means of solving the problem

[0010] A gas low alarm reconfirmation device for a gas-insulated switchgear according to one aspect of the present invention comprises: a signal input module that receives a signal indicating whether a plurality of busbars are live, a DS gas low signal indicating whether gas-insulated switchgear connected to each busbar is gas low, and a signal recognizing the gas low operation state from a user; a processing module that collects signals input from the signal input module to check whether a gas low signal of any one gas-insulated switchgear is input and checks whether the busbar connected to any one gas-insulated switchgear to which the gas low signal is input is in a live state; and an alarm output module that repeatedly outputs a gas low alarm according to the check result of the processing module to the screen of a monitoring device at designated times.

[0011] In the present invention, the signal input module comprises: a first busbar live signal input unit that receives a signal indicating whether the first busbar is live; a first busbar DS gas low signal input unit that receives a signal indicating whether the gas is low of a gas-insulated switch connected to the first busbar; a second busbar DS gas low signal input unit that receives a signal indicating whether the gas is low of a gas-insulated switch connected to the second busbar; a second busbar live signal input unit that receives a signal indicating whether the second busbar is live; and a gas low operation state recognition signal input unit that receives a gas low operation state recognition signal input by a user who recognizes the gas low operation state through an input means of a monitoring device.

[0012] In the present invention, the processing module is characterized by repeatedly outputting a gas low alarm containing a gas low alarm message at specified time intervals through an alarm output module when a gas low signal of a gas-insulated switch connected to the first busbar or the second busbar is input.

[0013] In the present invention, the processing module is characterized by, when a gas low signal of any one of the gas-insulated switchgear is input, when a gas low alarm is output according to whether the busbar is in a live state, additionally displaying a live state indicator on the screen of the monitoring device if it is in a live state, and indicating that it is in a dead state by not displaying a live state indicator if it is in a dead state.

[0014] In the present invention, the processing module is characterized by being implemented by a processor or by combining a plurality of logic gates and a timer.

[0015] In the present invention, the processing module is characterized by being implemented by including: a combination of logic gates implemented to repeatedly output a gas low alarm at specified intervals via a timer when the first busbar is in a live state and the first busbar DS is in a gas low state; a combination of logic gates implemented to repeatedly output a gas low alarm at specified intervals via a timer when the second busbar is in a live state and the second busbar DS is in a closed state and the first busbar DS is in a gas low state; and a combination of logic gates that stop outputting a gas low alarm when a signal acknowledging the gas low operation state is input from a user.

[0016] In the present invention, the processing module is characterized by being implemented by including: a combination of logic gates that, when a gas low signal is input from any one of a plurality of gas-insulated switches in a dead state, repeatedly output a gas low alarm at specified intervals through a timer; and a combination of logic gates that stop outputting the gas low alarm when a signal recognizing the gas low operation state is input from a user.

[0017] In the present invention, the alarm output module outputs a gas low alarm to the screen of a monitoring device and is characterized by repeatedly outputting the gas low alarm at specified time intervals until a user inputs a signal recognizing the gas low operation state through the input means of the monitoring device.

[0018] A control method for a gas low alarm reconfirmation device of a gas-insulated switchgear according to another aspect of the present invention comprises: a step in which a processing module checks whether a first busbar is in a live state and a first busbar DS gas low state is occurring; a step in which, if the first busbar is in a live state and a first busbar DS gas low state is occurring, the processing module checks whether a signal acknowledging the gas low operation state is input from a user; and a step in which, if a signal acknowledging the gas low operation state is not input from a user, the processing module repeatedly outputs a gas low alarm at specified intervals through an alarm output module.

[0019] The present invention is characterized by further including: a step of checking whether a signal acknowledging the gas low operation state is input by a processing module when the first busbar DS gas low operation state is not present, but the second busbar is live and the gas insulation switch of the second busbar is closed; and a step of repeatedly outputting a gas low alarm at designated intervals through an alarm output module when a signal acknowledging the gas low operation state is not input by a user.

[0020] In the present invention, in the step of outputting the gas low alarm, the processing module is characterized by indicating that the busbar connected to the gas-insulated switchgear to which the gas low alarm occurred is live, by additionally displaying a live status indicator on the screen of the monitoring device if it is live, and not displaying a live status indicator if it is dead. Effects of the invention

[0021] According to one aspect of the present invention, when a gas low occurs in a dead line and a live line gas-insulated switchgear (GIS), the present invention periodically re-generates a gas low alarm until the user recognizes and confirms the gas low event, thereby enabling the user to clearly recognize the gas low event and preventing it from developing into a major failure. Brief explanation of the drawing

[0022] FIG. 1 is an exemplary diagram showing the schematic configuration of a gas low alarm reconfirmation device of a gas-insulated switchgear according to one embodiment of the present invention. FIG. 2 is a flowchart illustrating a method for reconfirming a gas low alarm of a gas-insulated switchgear according to an embodiment of the present invention. FIG. 3 is an example diagram showing the configuration of a logic gate circuit that outputs a gas low alarm in a live state in FIG. 1. FIG. 4 is an example diagram showing the configuration of a logic gate circuit that outputs a gas low alarm in a diagonal state in FIG. 1. FIG. 5 is an example diagram showing a screen that outputs a gas low alarm to a monitoring device in the live state and the dead state in FIG. 1. Specific details for implementing the invention

[0023] Hereinafter, an embodiment of a gas low alarm reconfirmation device for a gas-insulated switchgear and a control method thereof according to the present invention will be described with reference to the attached drawings.

[0024] In this process, the thickness of lines or the size of components depicted in the drawings may be exaggerated for the sake of clarity and convenience of explanation. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intent or convention of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification.

[0025] FIG. 1 is an exemplary diagram showing the schematic configuration of a gas low alarm reconfirmation device of a gas-insulated switchgear according to one embodiment of the present invention.

[0026] As illustrated in FIG. 1, the gas low alarm reconfirmation device of a gas-insulated switchgear according to the present embodiment includes a signal input module (110), a processing module (120), and an alarm output module (130).

[0027] The signal input module (110) includes a first busbar live signal input unit (111), a first busbar DS gas low signal input unit (112), a second busbar DS gas low signal input unit (113), a second busbar live signal input unit (114), and a gas low operation status recognition signal input unit (115).

[0028] Here, DS (Disconnecting Switch) is a component included in the Gas Insulated Switch (GIS), and the DS gas low signal actually means the gas low signal of the Gas Insulated Switch (GIS).

[0029] The first busbar live signal input unit (111) receives a signal indicating whether the first busbar is live.

[0030] The first busbar DS gas low signal input unit (112) receives a signal indicating whether the DS (i.e., gas-insulated switchgear (GIS)) connected to the first busbar is gas low.

[0031] The second busbar DS gas low signal input section (113) receives a signal indicating whether the DS (i.e., gas-insulated switchgear (GIS)) connected to the second busbar is gas low.

[0032] The second busbar live signal input unit (114) receives a signal indicating whether the second busbar is live.

[0033] The gas low operation state recognition signal input unit (115) receives a gas low operation state recognition signal input by a user (i.e., a worker) who recognizes (i.e., confirms) the gas low operation state through an input means (e.g., a keyboard) (not shown) of a monitoring device (not shown).

[0034] The processing module (120) collects signals input from the signal input module (110) to check whether a gas low signal is input from one DS (i.e., gas-insulated switchgear (GIS)), and also checks whether the busbar is live when a gas low signal is input from one DS (i.e., gas-insulated switchgear (GIS)).

[0035] Additionally, when a gas low signal is input from any one DS (i.e., gas-insulated switchgear (GIS)), the processing module (120) outputs a gas low alarm (e.g., including a gas low alarm message) at a specified time interval (e.g., 30 seconds) through the alarm output module (130) to the screen of a user's (i.e., worker's) monitoring device (not shown) (see FIG. 5).

[0036] At this time, when a gas low signal is input from any one DS (i.e., Gas Insulated Switchgear (GIS)), a gas low alarm (e.g., including a gas low alarm message) is output depending on whether the busbar is in a live state. If it is in a live state, an additional live state indicator is displayed on the screen of a monitoring device (not shown) (see FIG. 5 (a)), and if it is in a dead state, the live state indicator is not displayed to indicate that it is in a dead state (see FIG. 5 (b)).

[0037] Here, the processing module (120) may be implemented by a processor or by using a plurality of logic gates (e.g., INV1~INV2, OR1~OR3, AND1~AND3, etc.) and a timer as shown in FIGS. 3 and 4.

[0038] However, the logic gate circuits shown in FIGS. 3 and FIGS. 4 are illustrated merely as examples to aid in understanding the operation of the present invention and are not intended to be limiting.

[0039] The alarm output module (130) outputs a gas low alarm (e.g., including a gas low alarm message) based on the check result of the processing module (120) to the screen of a monitoring device (not shown) of a user (i.e., a worker) (see FIG. 5), and repeatedly outputs the gas low alarm (e.g., including a gas low alarm message) at specified time intervals (e.g., 30 seconds) until the user (i.e., a worker) inputs a signal recognizing the gas low operation state through an input means (e.g., a keyboard) (not shown) of the monitoring device (not shown).

[0040] The operation of the processing module (120) will be explained below with reference to FIGS. 2 to 4.

[0041] FIG. 2 is a flowchart for explaining a method for reconfirming a gas low alarm of a gas-insulated switchgear according to an embodiment of the present invention, FIG. 3 is an example diagram showing the configuration of a logic gate circuit that outputs a gas low alarm in a live state in FIG. 1, and FIG. 4 is an example diagram showing the configuration of a logic gate circuit that outputs a gas low alarm in a dead state in FIG. 1.

[0042] Referring to FIG. 2, the processing module (120) checks whether the first busbar is in a live state and whether the first busbar DS gas low is in a low state (S101).

[0043] Accordingly, when the first busbar is in a live state and the first busbar DS gas low state occurs (e.g., S101), the processing module (120) checks whether a signal acknowledging the gas low operation state is input (S103), and if no signal acknowledging the gas low operation state is input from the user (worker) (e.g., No in S103), the processing module (120) outputs a gas low alarm through the alarm output module (130) (S104).

[0044] Meanwhile, even if the first busbar DS gas low state is not present (No in S101), if the second busbar is live and the second busbar DS (i.e., Gas Insulated Switchgear (GIS)) is closed and the first busbar DS gas low state is present (Yes in S102), the processing module (120) checks whether a signal acknowledging the gas low operation state is input (S103), and if no signal acknowledging the gas low operation state is input from the user (worker) (No in S103), the processing module (120) outputs a gas low alarm through the alarm output module (130) (S104).

[0045] At this time, the first busbar DS (i.e., gas-insulated switchgear (GIS)) and the second busbar DS (i.e., gas-insulated switchgear (GIS)) are connected at one end to the first busbar and the second busbar, respectively, and at the other end to each other in series.

[0046] In addition, steps S101 through S103 are repeated at specified time intervals (e.g., 30 seconds), and if a signal acknowledging the gas low operation state is still not received from the user (worker) (No in S103), the processing module (120) outputs a gas low alarm through the alarm output module (130) (S104).

[0047] That is, the processing module (120) outputs a gas low alarm through the alarm output module (130), and if no signal acknowledging the gas low operation state is input from the user (worker) (No in S103), it outputs the gas low alarm repeatedly at a specified time interval (e.g., 30 seconds) (S104).

[0048] Referring to FIG. 3, when the line is live, a combination of logic gates is used to repeatedly output a gas low alarm at specified times (e.g., 30 seconds) through a timer when the first bus is live and the first bus DS gas low occurs (i.e., when a first bus DS gas low signal (1) or a second bus DS gas low signal (2) with different references is input). Additionally, a combination of logic gates is used to repeatedly output a gas low alarm at specified times (e.g., 30 seconds) through a timer when the second bus is live and the second bus DS is closed and the first bus DS gas low occurs (i.e., when a first bus DS gas low signal (1) or a second bus DS gas low signal (2) with different references is input). At this time, if a signal acknowledging the gas low operation state is input from a user (worker), the output of the gas low alarm is stopped according to the combination of logic gates.

[0049] Referring to FIG. 4, when the line is in a dead state, if a gas low signal is input from any one of the multiple DS (i.e., gas-insulated switchgear (GIS)) through a combination of logic gates, a gas low alarm is repeatedly output at specified times (e.g., 30 seconds) through a timer. At this time, if a signal acknowledging the gas low operation state is input from a user (worker), the gas low alarm output is stopped according to the combination of logic gates.

[0050] For reference, the combination of logic gates shown in Fig. 4 does not implement a logic gate that checks whether the wire is live, so it can be implemented as a simpler combination than the combination of logic gates shown in Fig. 3.

[0051] As described above, the present invention has the effect of preventing a gas low event from developing into a major failure by ensuring that the user can clearly recognize the gas low event when a gas low occurs in a dead line and a live line gas insulation switch (GIS), by periodically re-generating a gas low alarm until the user recognizes and confirms the gas low event.

[0052] Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the technical scope of protection of the present invention should be determined by the claims below. Furthermore, the implementations described herein may be implemented, for example, as methods or processes, devices, software programs, data streams, or signals. Even if discussed only in the context of a single form of implementation (e.g., discussed only as a method), the implementation of the discussed features may also be implemented in other forms (e.g., devices or programs). Devices may be implemented in appropriate hardware, software, and firmware, etc. Methods may be implemented in devices such as processors, which generally refer to processing devices including, for example, computers, microprocessors, integrated circuits, or programmable logic devices. Processors also include communication devices such as computers, cell phones, portable / personal digital assistants ("PDAs"), and other devices that facilitate the communication of information between end-users. Explanation of the symbols

[0053] 110: Signal input module 120 : Processing Module 130: Alarm output module 111 : First busbar live-line signal input section 112: 1st busbar DS gas low signal input section 113: Second busbar DS gas low signal input section 114: Second busbar live-line signal input section 115: Gas Low Operation Status Detection Signal Input Section

Claims

Claim 1 A signal input module that receives a signal indicating whether a plurality of busbars are live, a DS gas low signal indicating whether gas-insulated switchgear connected to each busbar is gas low, and a signal recognizing the gas low operation state from a user; a processing module that aggregates the signals input from the signal input module to check whether a gas low signal of any one gas-insulated switchgear is input, and checks whether the busbar connected to the gas-insulated switchgear where the gas low signal is input is in a live state; and an alarm output module that repeatedly outputs a gas low alarm according to the check result of the processing module to the screen of a monitoring device at specified intervals, wherein the processing module comprises a combination of logic gates implemented to repeatedly output a gas low alarm at specified intervals via a timer when the first busbar is in a live state and the first busbar DS gas low state occurs. A combination of logic gates implemented to repeatedly output a gas low alarm at specified intervals via a timer when the second busbar is in a live state and the second busbar DS is in a closed state and the first busbar DS is in a gas low state; and a combination of logic gates that stop the gas low alarm output when a signal acknowledging the gas low operation state is input from a user; wherein the signal input module comprises: a first busbar live signal input unit receiving a signal indicating whether the first busbar is live; a first busbar DS gas low signal input unit receiving a signal indicating whether the gas insulated switch connected to the first busbar is gas low; a second busbar DS gas low signal input unit receiving a signal indicating whether the gas insulated switch connected to the second busbar is gas low; a second busbar live signal input unit receiving a signal indicating whether the second busbar is live; and a gas low operation state acknowledgment signal input unit receiving a signal acknowledging the gas low operation state input by a user who has recognized the gas low operation state through an input means of a monitoring device.A gas low alarm reconfirmation device for a gas-insulated switch that distinguishes and displays live and dead line status, comprising: a processing module that, when a gas low signal of a gas-insulated switch connected to either the first busbar or the second busbar is input, repeatedly outputs a gas low alarm containing a gas low alarm message at specified time intervals through an alarm output module to the screen of a monitoring device; and wherein the processing module is implemented by a processor or by combining a plurality of logic gates and a timer.

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