KR102679793B1 - 29kV Gas Insulated Switchgear For Railway Ecofriendly and Operating Method thereof - Google Patents

Abstract

The present invention relates to a 29kV gas insulated switchgear for eco-friendly railways and a control method thereof. The 29kV gas insulated switchgear for eco-friendly railways according to an embodiment of the present invention is formed of an insulator to serve as a housing for the 29kV gas insulated switchgear for eco-friendly railways, and the inside is an enclosure (filled with dry compressed air, which is an eco-friendly insulating medium). 100); A cable connection portion 200 formed at the bottom of the enclosure 100 to electrically connect the cable C to a circuit inside the enclosure 100; A busbar unit (300) provided so that the busbar (M) electrically connected to the cable (C) by the circuit is insulated from the enclosure (100); A plurality of disconnectors 400 disposed between the bus bar (M) and the cable (C) to electrically connect or selectively disconnect the bus bar (M) and the cable (C); A circuit breaker (500) disposed between the disconnectors (400) to electrically connect or selectively block the busbar (M) and the cable (C); an instrument current transformer (600) arranged to surround the enclosure (H) at a lower position of the circuit breaker (500) to output a measured current proportional to the current flowing through the bus bar (M); A breaker control unit 700 that operates the breaker 500 to block the circuit when the measured current is output above a set value; When the measured current is output more than a set value and the breaker 500 blocks the circuit, a disconnector control unit 800 operates the disconnector 400 to block the circuit and removes residual current by grounding the disconnector 400 at the same time; and a circuit breaker monitoring device 900 that provides a three-dimensional diagnostic image that intuitively indicates the state of the circuit breaker 500. According to the present invention, even in the 29kV gas insulated switchgear for railways configured in a closed form, the manager can check whether it is operating normally through the display unit 940 at any time, and receive diagnostic messages and 3D image data when an abnormal condition occurs. You can immediately identify and respond to situations.

Description

29kV Gas Insulated Switchgear For Railway Ecofriendly and Operating Method thereof}

The present invention relates to an eco-friendly 29kV gas-insulated switchgear for railways and a control method thereof. More specifically, it relates to a 29kV gas-insulated switchgear for railways and a control method thereof that allow managers to easily check whether it is operating normally.

Gas Insulated Switchgear (GIS) is a switchgear that embeds busbars, switchgear, transformers, lightning arresters, etc. in a metal container and maintains insulation by filling and sealing it with SF6 gas, which has excellent insulation performance and arc extinguishing characteristics.

The pioneering of gas insulated switchgear took place in 1965-1966, when prototypes or designs rated at 110 to 270 kV were gradually developed in European countries such as West Germany, France, the United Kingdom, and Switzerland, and were also adopted by the Research Committee of the Universal Transmission and Substation Conference, making it a global phenomenon. caused a huge reaction. The first time GIS was actually put into commercial operation was in the Essen district of West Germany in 1966, and in that year, Paris, Lyon, France, and Zurich, Switzerland began operating GIS of the 245kV class and 170kV class in earnest.

Technically classified as switching equipment, it is divided into insulating medium and circuit breaker type. Initially, high-pressure air rather than SF6 gas was considered for insulation, but as SF6 gas became cheaper and handling technology advanced, SF6 gas (Sulfar Hexafluorid gas) came to be widely adopted. SF6 gas has insulating properties comparable to insulating oil at 2 to 3 [kg/cm2] and fire-extinguishing performance about 100 times that of air, and it is very easy to handle because the same type of gas is used for fire-extinguishing and insulating purposes. In Japan, GIS of the 70-80kV class began local test operation in 1968, but since then, the extra-high voltage and ultra-high voltage sectors have developed rapidly, and Japan is the first in the rating of 400kV or more.

Starting with the Uijeongbu substation on the Gyeongwon Line in 1986, the Korea Railroad Administration installed the primary side of the main transformer of Guro Substation No. 4 in 1987, the Gunpo substation and Seonbawi Gwacheon Complex SSP on the Gwacheon Line in 1994, the Moran substation and Bundang SSP on the Bundang Line, and the Juan substation and Bugae SP on the Gyeongin Line in 1996. GIS equipment was installed at Yeokgok SSP, and in 1997, GIS was installed and operated at six SSPs (Geochon, Beopjeon, Imgi, Buncheon, Seungbu, and Dongjeom) between Yeongju and Cheoram on the Yeongdong Line. Afterwards, according to the Gyeongbu High-Speed Rail Project, GIS was installed and operated at Guro Substation. The entire facility and facilities of Anyang SSP have been improved with GIS.

However, the conventional gas insulated switchgear had a closed configuration, making it difficult for managers to check whether it was operating normally, and even if it entered an abnormal state, it was difficult to recognize what state it was in.

Additionally, there were environmental problems with SF6 gas, which was previously used as an insulating gas. To explain in more detail, SF6 gas is not easily decomposed, so when it is emitted into the atmosphere, it is left on the ground and is one of the gases that causes global warming. Accordingly, countries around the world are discussing to stop using SF6 gas, and domestic public institutions are aiming for the complete phase out of SF6 gas by 2023. Accordingly, there is an urgent need to replace insulation gas with eco-friendly materials.

Korean Patent No. 10-0342369 (2002.06.17)

The present invention was devised to solve the above problems. The purpose of the present invention is to enable managers to easily check normal operation in a 29kV gas insulated switchgear for eco-friendly railways configured in a closed form, and to respond to the manager when abnormal conditions occur. This relates to a 29kV gas insulated switchgear for eco-friendly railways that transmits information to the smart terminal (700) so that managers can immediately understand the situation.

The 29kV gas insulated switchgear for eco-friendly railways according to an embodiment of the present invention is formed of an insulator to serve as a housing for the 29kV gas insulated switchgear for eco-friendly railways, and the inside is an enclosure (filled with dry compressed air, which is an eco-friendly insulating medium). 100); A cable connection portion 200 formed at the bottom of the enclosure 100 to electrically connect the cable C to a circuit inside the enclosure 100; A busbar unit (300) provided so that the busbar (M) electrically connected to the cable (C) by the circuit is insulated from the enclosure (100); A plurality of disconnectors 400 disposed between the bus bar (M) and the cable (C) to electrically connect or selectively disconnect the bus bar (M) and the cable (C); A circuit breaker (500) disposed between the disconnectors (400) to electrically connect or selectively block the busbar (M) and the cable (C); an instrument current transformer 600 arranged to surround the enclosure 100 at a lower position of the breaker 500 to output a measured current proportional to the current flowing through the bus bar M; a breaker control unit 700 that operates the breaker 500 to block the circuit when the measured current is output above a set value; When the measured current is output more than a set value and the breaker 500 blocks the circuit, a disconnector control unit 800 operates the disconnector 400 to block the circuit and removes residual current by grounding the disconnector 400 at the same time; And a circuit breaker monitoring device 900 that provides a three-dimensional diagnostic image that intuitively indicates the state of the circuit breaker 500.

The 29kV gas insulated switchgear for eco-friendly railways further includes a lightning arrester 1000 that is grounded to protect the circuit when an abnormal current occurs.

The cable connection unit 200 includes a socket 210 into which the cable C is inserted; an insulating spacer 220 that electrically separates the cable connection portion 200 and the disconnector 400; and a connection member 230, which is a conductor formed to penetrate the insulating spacer 220 and the socket 210.

The disconnector 400 includes an upper conductor 410 and a lower conductor 420 arranged to be spaced apart from each other in the disconnector 400; a rotatable conductor 430, one side of which is rotatably mounted on the lower conductor 420, and the other side of which is in contact with or spaced apart from the upper conductor 410; A disconnector shaft 440 that rotates when the disconnector control unit 800 operates and rotates the rotating conductor 430; And a grounding conductor 450, one side of which is mounted on the side of the disconnector 400 and the other side of which is grounded, and which removes residual current when in contact with the rotating conductor 430.

The circuit breaker 500 has an internal space in a vacuum state, and the upper conductor 511 and the lower conductor 512 are in contact with or apart from each other in the vacuum state, thereby electrically connecting the bus bar (M) and the cable (C). Vacuum breaker (510) for selectively blocking; A breaker shaft 520 located on the upper side of the single vacuum breaker 510 and rotating when the breaker control unit 700 operates; And one side is connected to the breaker shaft 520, and the other side is connected to the upper conductor 511 of the vacuum breaker 510, so that when the breaker shaft 520 rotates, the upper conductor 511 moves upward. It is characterized by including a moving link unit 530.

The circuit breaker monitoring device 900 includes a signal measuring unit 910 that measures a plurality of signals generated from the circuit breaker 500; a main processor 920 that diagnoses the state of the circuit breaker 500 from the waveform of the signals measured by the signal measurement unit 910 and selects a diagnostic message matching the state among preset diagnostic messages; The measurement time, measurement value, and type of the signals measured by the signal measurement unit 910 are mapped to the three coordinate axes of the three-dimensional space, and the three-dimensional coordinates of each of the measured signals are calculated to generate three-dimensional image data. a graphics processor 930; and a display unit 940 that outputs the 3D image data generated by the graphics processor 930 and the diagnostic message selected by the main processor 920.

The signal includes a current (a1) flowing in the trip coil of the circuit breaker 500; and a current (a2) flowing in the closing coil of the circuit breaker 500; It is characterized by including one or more of the following.

The main processor 920 inputs the difference between the measured waveforms of the learning signals and the normal waveforms of the learning signals to the input layer, and outputs a diagnostic message corresponding to the difference input to the input layer to the output layer to learn the neural network. An error is calculated by comparing the waveforms of the signals measured by the signal measurement unit 910 with the normal waveforms of the signals generated from the circuit breaker 500, and exceeds the normal variation range of the signal in the learned neural network. It is characterized by selecting a diagnostic message that is mapped to an error.

The circuit breaker monitoring device 900 is characterized in that it further includes an abnormal condition occurrence transmission device 950 that transmits the occurrence of an abnormal condition to the manager's smart terminal 1100 when an abnormal condition occurs.

The abnormal condition occurrence transmission device 950 includes a receiving unit 951 that receives the diagnostic message generated by the main processor 920 and the 3D image data generated by the graphics processor 930; a signal processing unit 952 that converts the diagnostic message and the 3D image data transmitted from the receiving unit 951 into digital signals; And a communication unit 953 capable of transmitting the digital signal processed in the signal processing unit 952 to the smart terminal 1100 through communication or receiving a signal from the smart terminal 1100. .

The smart terminal 1100 includes a wireless communication unit 1110 that receives the digital signal from the communication unit 953; And a terminal display unit 1120 that converts the digital signal into the diagnostic message and the 3D image data and outputs it. The smart terminal 1100 includes computer support functions such as Internet communication and information search. As an intelligent terminal, the user can install the desired application software and is characterized as a mobile communication device capable of Internet communication while moving using one or more mobile communication networks among Wi-Fi (Wi-Fi, wireless LAN), 3G, 4G, and 5G. Do it as

In the control method of a 29 kV gas insulated switchgear for eco-friendly railways according to another embodiment of the present invention, measuring a plurality of signals generated from the circuit breaker 500 in the signal measuring unit 910 (S100); In the main processor 920, diagnosing the state of the circuit breaker 500 from the waveforms of signals measured by the signal measurement unit 910 (S200); In the main processor 920, selecting a diagnostic message matching the status from among preset diagnostic messages (S300); When the measured current is output more than a set value, operating the breaker 500 to block the circuit in the breaker control unit 700 (S400); When the measured current is output more than a set value and the circuit breaker 500 blocks the circuit, the disconnector control unit 800 operates the disconnector 400 to block the circuit (S500); Providing a three-dimensional diagnostic image that intuitively indicates the state of the circuit breaker 500 from the circuit breaker monitoring device 900 (S600); And a step (S700) of transmitting the abnormal condition occurrence from the abnormal condition occurrence transmission device 950 to the manager's smart terminal 1100 (S700).

The step of providing the 3D diagnostic image (S600) includes measuring a plurality of signals generated from the circuit breaker 500 by the signal measurement unit 910 (S610); Diagnosing the state of the circuit breaker 500 in the main processor 920 from the waveforms of the signals measured by the signal measurement unit 910, and selecting a diagnostic message matching the state from among preset diagnostic messages. (S620); The graphic processor 930 maps the measurement time, measurement value, and type of the signals measured by the signal measurement unit 910 to three coordinate axes in 3D space to calculate 3D coordinates for each of the measured signals. generating 3D image data (S630); and outputting the 3D image data generated by the graphics processor 930 and the diagnostic message selected by the main processor 920 on the display unit 940 (S640).

The step of transmitting the occurrence of an abnormal condition (S700) includes receiving the diagnostic message generated by the main processor 920 and the 3D image data generated by the graphics processor 930 from the receiving unit 951 ( S710); Converting the diagnostic message and the 3D image data transmitted from the receiving unit 951 into digital signals in the signal processing unit 952 (S720); Transmitting the digital signal processed in the signal processing unit 952 to the smart terminal 1100 through communication from the communication unit 953 (S730); Receiving the digital signal transmitted from the communication unit 953 at the wireless communication unit 1110 (S740); and converting the digital signal into the diagnostic message and the 3D image data and outputting them on the terminal display unit 1120 (S750).

As discussed above, according to the present invention, even in the 29kV gas insulated switchgear for eco-friendly railways configured in a closed form, the manager can check whether it is operating normally through the display unit 640 at any time, and when an abnormal condition occurs, a diagnostic message and 3 By receiving 3D video data, you can immediately identify and respond to the situation.

Figure 1 is a photograph of a 29kV gas insulated switchgear for eco-friendly railways according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating FIG. 1 in detail.
FIG. 3 is a detailed view of the cable connection portion 200 of FIGS. 1 and 2.
Figure 4 is a detailed view of the bus bar unit 300 of Figures 1 and 2.
Figure 5 is a detailed view of the disconnector 300 of Figures 1 and 2.
Figure 6 is a diagram showing the operating state of the disconnector 300.
Figure 7 is a detailed view of the circuit breaker 500 of Figures 1 and 2.
Figure 8 is a diagram showing the operating state inside the vacuum circuit breaker 510.
Figure 9 is a conceptual diagram of a circuit breaker monitoring device 900 and a smart terminal 1100 that communicates with the circuit breaker monitoring device 900.
Figure 10 is a flowchart of a control method of a 29kV gas insulated switchgear for railroads according to another embodiment of the present invention.
11 and 12 are examples of diagnostic messages and 3D image data.

The principle is that terms or words used in the specification and claims should not be limited to their common or dictionary meanings, and that the inventor may appropriately define the concept of the term in order to explain his or her invention in the best way. Based on this, it must be interpreted with meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent the entire technical idea of the present invention, and therefore, various equivalents that can replace them at the time of filing the present application may be used. It should be understood that there may be variations and examples. Additionally, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the gist of the present invention are omitted. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a photograph of a 29kV gas insulated switchgear for eco-friendly railways according to an embodiment of the present invention, and Figure 2 is a diagram illustrating Figure 1 in detail. FIG. 3 is a detailed view of the cable connection unit 200, and FIG. 4 is a detailed view of the bus bar unit 300. FIG. 5 is a detailed view of the disconnector 300, and FIG. 6 is a diagram showing the operating state of the disconnector 300. FIG. 7 is a detailed view of the circuit breaker 500, and FIG. 8 is a diagram showing an internal operating state of the vacuum circuit breaker 510.

According to Figures 1 to 8, the 29kV gas insulated switchgear for eco-friendly railway according to an embodiment of the present invention includes an enclosure (100), a cable connection part (200), a busbar part (300), a disconnector (400), and a circuit breaker (500). ), instrument current transformer 600, circuit breaker control unit 700, disconnector control unit 800, circuit breaker monitoring device 900, lightning arrester 1000, and smart terminal 1100.

The enclosure 100 is made of an insulator to serve as a housing for a 29kV gas insulated switchgear for eco-friendly railways, and the inside is filled with dry compressed air, an eco-friendly insulating medium. It is an eco-friendly product that reduces greenhouse gases by replacing SF6 gas, which was previously used as an insulating medium, with dry compressed air.

According to FIG. 3, the cable connection portion 200 is formed at the bottom of the enclosure 100 and serves to electrically connect the cable C to the circuit inside the enclosure 100, and includes a socket 210 and insulation. Includes a spacer 220 and a connection member 230. A cable (C) is inserted into the socket 210, and the connection member 230 and the cable (C) are electrically connected. An insulating spacer 220 is positioned between the cable connection portion 200 and the disconnector 400 to electrically separate the cable connection portion 200 and the disconnector 400. In other words, even if current leaks inside the cable connection unit 200, the leakage current is prevented from flowing to other components such as the disconnector 400. An insulating spacer (SP) may also be disposed between other components to be described later, and a detailed description thereof will be omitted as it overlaps with the above content. The connection member 230 is formed to penetrate the insulating spacer 220 and the socket 210, and transmits the current introduced through the cable C to the disconnector 400.

According to FIG. 4, inside the busbar unit (300, Main Bus), a busbar (M) electrically connected to the cable (C) by the circuit is provided to be insulated from the enclosure (100). At this time, there may be a plurality of busbar units 300, and in this case, a plurality of busbars M may be provided inside each busbar unit 300 in an electrically insulated state.

According to FIGS. 5 and 6, a disconnector (400) is disposed between the bus bar (M) and the cable (C) to electrically connect the bus bar (M) and the cable (C) or to selectively connect the bus bar (M) to the cable (C). It plays a blocking role and can be multiple. In other words, the disconnector 400 is a component used to change the connection and completely open and close the circuit.

At this time, the disconnector 400 includes an upper conductor 410, a lower conductor 420, a rotating conductor 430, a disconnector shaft 440, and a ground conductor 450. The upper conductor 410 and the lower conductor 420 are arranged to be spaced apart from each other in the disconnector 400, and one side of the pivotable conductor 430 is rotatably mounted on the lower conductor 420 and the other side is attached to the upper conductor. It is in contact with or separated from (410). The disconnector shaft 440 rotates when the disconnector control unit 800 operates and serves to rotate the rotating conductor 430, and the ground conductor 450 has one side mounted on the side of the disconnector 400 and the other side. It is grounded and serves to remove residual current when in contact with the rotating conductor 430.

That is, in a normal state, as shown in (a) of FIG. 6, the rotating conductor 430 is located between the upper conductor 410 and the lower conductor 420 to close the circuit so that current can flow. In addition, as will be described later, when an abnormal situation (ex: overcurrent flows in the circuit, etc.) occurs, the disconnector shaft 440 rotates by the operation of the disconnector control unit 800, as shown in (b) of FIG. Accordingly, the rotating conductor 430 rotates and is spaced apart from the upper conductor 410, thereby opening the circuit to prevent overcurrent from flowing anymore. Lastly, when the current must be completely cut off for repair of the line, etc., the disconnector shaft 440 further rotates to connect the rotating conductor 430 and the ground conductor 450, as shown in (c) of FIG. 6. Accordingly, the residual current in the circuit is removed. At this time, the disconnector 400 functions as an earthing switch.

According to FIGS. 7 and 8, the circuit breaker 500 is disposed between the disconnectors 400 and serves to electrically connect or selectively disconnect the bus bar (M) and the cable (C). In other words, the circuit breaker 500 connects the circuit when the power transmission and distribution facilities are normally operated, allowing power to be transmitted. In addition, when an overcurrent flows due to an abnormality in the transmission or distribution line, the breaker controller 700, which will be described later, operates to block the circuit when the measured current output from the current transformer 600, which will be described later, is output more than a set value, thereby blocking the circuit. This protects the circuit and various devices connected to the circuit.

The circuit breaker 500 includes a vacuum circuit breaker 510, a circuit breaker shaft 520, and a link unit 530. The internal space of the vacuum breaker 510 is in a vacuum state, and in the vacuum state, the upper conductor 511 and the lower conductor 512 are contacted or separated, thereby electrically connecting or selectively connecting the bus bar (M) and the cable (C). It plays a blocking role. The circuit breaker shaft 520 is located on the upper side of the single vacuum circuit breaker 510, and rotates when the circuit breaker control unit 700 operates, thereby operating the link unit 530, which will be described later. One side of the link portion 530 is connected to the breaker shaft 520, and the other side is connected to the upper conductor 511 of the vacuum breaker 510, so that when the breaker shaft 520 rotates, the upper conductor 511 ) plays a role in moving upward.

Hereinafter, the operating state of the vacuum circuit breaker will be described in more detail.

According to (a) of FIG. 8, in a normal state, the upper conductor 511 and the lower conductor 512 are in contact, and the circuit is electrically closed. In addition, as will be described later, when an abnormal situation (ex: overcurrent flows in the circuit, etc.) occurs, the breaker shaft 520 rotates by the operation of the breaker control unit 700, as shown in (b) of FIG. Accordingly, the link unit 530 rotates and moves the upper conductor 511 upward. If the upper conductor 511 and the lower conductor 512 are separated by less than a certain distance in a vacuum state, an arc may occur, but the arc is extinguished due to the vacuum condition inside the vacuum circuit breaker. Afterwards, as shown in (c) of FIG. 8, when the upper conductor 511 and the lower conductor 512 are separated by a certain distance or more, the circuit is opened to prevent overcurrent from flowing anymore.

According to FIG. 2, the instrument current transformer 600 is arranged to surround the enclosure (H) at the lower position of the circuit breaker 500 so as to output a measured current proportional to the current flowing through the bus bar (M). In other words, the instrument current transformer 600 is a type of transformer that converts the properties of the current flowing in the line, and outputs a small measurement current proportional to the current flowing in the circuit including the bus bar (M) to determine whether the circuit is abnormal. Let us judge.

In addition, the breaker control unit 700 serves to operate the breaker 500 to block the circuit when the measured current is output above a set value, and the disconnector control unit 800 operates when the measured current is output above a set value. When the circuit breaker 500 blocks the circuit, the disconnector 400 operates to block the circuit and simultaneously grounds the circuit to remove residual current. That is, when the circuit breaker 500 is activated in the event of a line abnormality or for line maintenance or repair, the disconnector 400 operates simultaneously, thereby completely blocking the circuit to prevent current from flowing and remaining in the circuit. The current is removed through grounding. Additionally, the lightning arrester 1000 is configured to be grounded to protect the circuit when an abnormal current occurs.

The circuit breaker monitoring device 900 serves to provide a three-dimensional diagnostic image that intuitively indicates the state of the circuit breaker 500, and a detailed description will be provided later.

As described above, the 29kV gas-insulated switchgear for eco-friendly railways according to an embodiment of the present invention is electrically comprised of a busbar unit 300, a disconnector 400, a circuit breaker 500, a current transformer 600, and a disconnector. It is arranged in the order of 400, cable connection part 200, and is additionally provided with a breaker controller 700, a disconnector controller 800, and a breaker monitoring device 900.

Figure 9 is a conceptual diagram of a circuit breaker monitoring device 900 and a smart terminal 1100 that communicates with the circuit breaker monitoring device 900. According to FIG. 9, the circuit breaker monitoring device 900 includes a signal measurement unit 910, a main processor 920, a graphics processor 930, a display unit 940, and an abnormal condition transmission device 950. .

The signal measurement unit 910 serves to measure a plurality of signals generated from the circuit breaker 500, and the signal is a current flowing in a trip coil for switching the circuit breaker 500 to an open state ( a1) and a current (a2) flowing in a close coil for switching the circuit breaker 500 to a closed state. At this time, the signal measurement unit 910 may be implemented with current sensors that detect the value of the current flowing at each point of the circuit breaker 500 and an AD converter (analog to digital converter) that converts an analog signal into a digital signal. there is.

The main processor 920 diagnoses the state of the circuit breaker 500 from the waveforms of the signals measured by the signal measurement unit 910, and serves to select a diagnostic message that matches the state among preset diagnostic messages. . That is, the main processor 920 may be implemented as a CPU (Central Processing Unit) that can decode and execute a computer program stored in a storage device (not shown). Additionally, a storage device (not shown) may be implemented as a complex of RAM (Random Access Memory), ROM (Read Only Memory), hard disk, flash memory, etc.

The main processor 920 inputs the difference between the measured waveforms of the learning signals and the normal waveforms of the learning signals to the input layer, and outputs a diagnostic message corresponding to the difference input to the input layer to the output layer to learn the neural network. You can. Afterwards, the error is calculated by comparing the waveforms of the signals actually measured by the signal measurement unit 910 and the normal waveform of the signal generated from the circuit breaker 500, and the normal fluctuation range of the signal is determined from the learned neural network. The goal is to select a diagnostic message that maps to the exceeding error.

Neural networks were developed by modeling biological neural networks to solve complex problems that cannot be solved by computer numerical calculations. The main processor 920 uses a neural network with a multi-layer perceptron structure, which is the most widely used model among neural network models, to measure the waveforms of each of the signals measured by the signal measurement unit 910 and each of these signals. The identifier of the diagnostic message can be obtained based on the difference between the normal waveforms. As such, in this embodiment, by using a neural network to select the diagnostic message applied to the 3D diagnostic image, the state of the circuit breaker, which cannot be diagnosed by simple computer calculations and can only be diagnosed by the experience of a circuit breaker expert, is also displayed in 3D. It may be displayed on diagnostic imaging.

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For example, after completing neural network learning, the measurement waveform of the current (a1) flowing in the trip coil measured by the signal measurement unit 910 and the current flowing in the trip coil learned in the neural network If the difference between the normal waveforms indicates disconnection of the trip coil, the main processor 920 outputs a diagnostic message indicating that the difference indicates disconnection of the trip coil.

Therefore, the 29kV gas-insulated switchgear for eco-friendly railways according to an embodiment of the present invention not only displays signals measured by the signal measurement unit 910, but also displays the status of the circuit breaker that can be diagnosed from the measured signals. A diagnostic message indicating . Accordingly, even if the manager is not a circuit breaker expert, he or she can easily understand the state of the breaker, and by providing the manager with guidelines on the state of the breaker, misdiagnosis of the state of the breaker can be prevented.

The graphics processor 930 maps the measurement time, measurement value, and type of the signals measured by the signal measurement unit 910 to the three coordinate axes of the three-dimensional space, and calculates the three-dimensional coordinates of each of the measured signals. It plays a role in generating 3D image data. At this time, the graphics processor 930 may be implemented as a graphics card or an integrated circuit (IC) chip capable of processing 3D image data. The functions of the graphics processor 930 may be written as a computer program and stored in a storage device (not shown). In this case, the main processor 920 and the graphics processor 930 may be implemented as one CPU.

The display unit 940 serves to output the 3D image data generated by the graphics processor 930 and the diagnostic message selected by the main processor 920. At this time, the display unit 940 may be implemented as a liquid crystal display (LCD), a light emitting diode (LED) display, etc., or may be implemented as a touch screen, but is not necessarily limited thereto and may display three-dimensional image data and diagnostic messages. Any device that can output is sufficient.

The abnormal condition occurrence transmission device 950 serves to transmit the occurrence of an abnormal condition to the manager's smart terminal 1100 when an abnormal condition occurs, and includes a receiving unit 951, a signal processing unit 952, and a communication unit 953.

The receiving unit 951 receives the diagnostic message generated by the main processor 920 and the 3D image data generated by the graphics processor 930, and the signal processing unit 652 receives the diagnostic message transmitted from the receiving unit 951. The diagnostic message and the 3D image data are converted into digital signals, and the communication unit 953 transmits the digital signal processed by the signal processing unit 952 to the smart terminal 1100 through communication, or the smart terminal 1100 It serves to receive signals from.

Additionally, the smart terminal 1100 includes a wireless communication unit 1110 and a terminal display unit 1120. At this time, the wireless communication unit 1110 serves to receive the digital signal from the communication unit 953, and the terminal display unit 1120 serves to convert the digital signal into the diagnostic message and the 3D image data and output them. Do it. In particular, the smart terminal 700 is an intelligent terminal with additional computer support functions such as Internet communication and information search, and allows the user to install desired application software and supports Wi-Fi (Wi-Fi, wireless LAN), 3G, 4G, and 5G. It is characterized as a mobile communication device capable of Internet communication while moving using one or more mobile communication networks.

Figure 10 is a flowchart of a control method of a 29kV gas insulated switchgear for eco-friendly railways according to another embodiment of the present invention, and Figures 11 and 12 are exemplary diagrams of diagnostic messages and 3D image data. The control method of the 29kV gas insulated switchgear for eco-friendly railway according to another embodiment of the present invention includes the following steps: measuring step (S100), diagnosing step (S200), selecting step (S300), operating step (S400), operation It includes an ordering step (S500), a providing step (S600), and a delivering step (S700).

In the measuring step (S100), a plurality of signals generated from the circuit breaker 500 are measured by the signal measuring unit 910. At this time, the signal includes one or more of the current a1 flowing in the trip coil of the circuit breaker 500 and the current a2 flowing in the closing coil of the circuit breaker 200.

In the diagnosis step (S200), the main processor 920 diagnoses the state of the circuit breaker 500 from the waveforms of signals measured by the signal measurement unit 910. Additionally, in the selection step (S300), the main processor 920 selects a diagnostic message that matches the status among preset diagnostic messages.

That is, the main processor 920 inputs the difference between the measured waveforms of the learning signals and the normal waveforms of the learning signals to the input layer, and outputs a diagnostic message corresponding to the difference input to the input layer to the output layer to establish a neural network. You can learn. Afterwards, the error is calculated by comparing the waveforms of the signals actually measured by the signal measurement unit 910 and the normal waveform of the signal generated from the circuit breaker 500, and the normal fluctuation range of the signal is determined from the learned neural network. The goal is to select a diagnostic message that maps to the exceeding error.

In the operating step (S400), when the measured current is output above the set value, the breaker controller 700 operates the breaker 500 to block the circuit. In more detail, the circuit breaker shaft 520 rotates due to the operation of the circuit breaker control unit 700, which causes the link unit 530 to rotate and move the upper conductor 511 upward. When the upper conductor 511 and the lower conductor 512 are separated by a certain distance or more, the circuit is opened to prevent overcurrent from flowing anymore. In other words, when overcurrent flows due to an abnormality in a transmission or distribution line, the line is blocked to protect the line and various devices connected to the line.

In the operating step (S500), when the measured current is output above the set value and the circuit breaker 500 blocks the circuit, the disconnector control unit 800 operates the disconnector 400 to block the circuit and at the same time grounds it. This is to remove residual current. By the operation of the disconnector control unit 800, the disconnector shaft 440 rotates, and as a result, the rotating conductor 430 rotates and becomes spaced apart from the upper conductor 410, thereby opening the circuit to prevent overcurrent from flowing anymore. Additionally, residual current in the circuit can be removed by connecting the rotating conductor 430 and the ground conductor 450.

That is, when the circuit breaker 500 is activated in the event of a line abnormality or for line maintenance or repair, the disconnector 400 operates simultaneously, thereby completely blocking the circuit to prevent current from flowing and remaining in the circuit. The current is removed through grounding.

In the providing step (S600), the circuit breaker monitoring device 900 provides a three-dimensional diagnostic image that intuitively indicates the state of the circuit breaker 500, including a measuring step (S610), a selecting step (S620), It includes a generating step (S630) and an output step (S640).

In the measuring step (S610), the signal measurement unit 910 measures a plurality of signals generated from the circuit breaker 500. In the selection step (S620), the main processor 920 diagnoses the state of the breaker 500 from the waveform of the signals measured by the signal measurement unit 910, and matches the state among the preset diagnostic messages. Select the diagnostic message that appears. That is, since the measured current is output above the set value, the measuring step (S610) and the selecting step (S620) are performed again, separately from steps S100 to S300.

In the generating step (S630), the graphic processor 930 maps the measurement time, measurement value, and type of the signals measured by the signal measurement unit 910 to three coordinate axes of a three-dimensional space, and the measured signals Each 3D coordinate is calculated to generate 3D image data. In addition, the output step (S640) outputs the 3D image data generated by the graphics processor 930 and the diagnostic message selected by the main processor 920 on the display unit 940 (FIGS. 11 and 12 reference).

In the transmitting step (S700), the abnormal state occurrence is transmitted from the abnormal state occurrence transmission device 950 to the manager's smart terminal 1100, including a receiving step (S710), a converting step (S720), and a transmitting step. It includes a step (S730), a receiving step (S740), and an output step (S750).

In the receiving step (S710), the diagnostic message generated by the main processor 920 and the 3D image data generated by the graphics processor 930 are received by the receiving unit 951. In the converting step (S720), the diagnostic message and the 3D image data transmitted from the receiving unit 951 are converted into digital signals in the signal processing unit 952. In the transmitting step (S730), the digital signal processed by the signal processing unit 952 is transmitted from the communication unit 953 to the smart terminal 1100 through communication. In the receiving step (S740), the digital signal transmitted from the communication unit 953 is received by the wireless communication unit 1110. Finally, in the output step (S750), the digital signal is converted into the diagnostic message and the 3D image data and output on the display unit 1120.

As described above, in the present invention, by performing the providing step (S600) and the delivering step (S700), even in the 29kV gas insulated switchgear for eco-friendly railroads configured in a closed form, the manager can check whether the operation is normal through the display unit 940. You can check at any time, and when an abnormal condition occurs, you can receive diagnostic messages and 3D image data through the smart terminal 1100 to immediately identify and respond to the situation.

The above-described embodiments are merely preferred embodiments that allow those with ordinary knowledge in the technical field to which the present invention pertains (hereinafter referred to as 'persons skilled in the art') to easily practice the present invention, and the above-described embodiments and the accompanying drawings Since it is not limited to this, the scope of rights of the present invention is not limited. Therefore, it will be clear to those skilled in the art that various substitutions, modifications and changes can be made without departing from the technical spirit of the present invention, and it is obvious that parts that can be easily changed by those skilled in the art are also included in the scope of the rights of the present invention. .

100 enclosure
200 cable connection
210 socket
220 insulating spacer
230 connection member
300 Mothership Department
400 disconnector
410 upper conductor
420 lower conductor
430 rotating conductor
440 Disconnector Shaft
450 ground conductor
500 breaker
510 vacuum breaker
520 breaker shaft
530 link unit
600 Instrument current transformer
700 circuit breaker control unit
800 disconnector control unit
900 circuit breaker monitoring device
910 signal measurement unit
920 main process
930 graphics processor
940 display unit
950 Abnormal condition transmission device
951 receiver
952 signal processing unit
953 Communications Department
1000 lightning arrester
1100 smart terminal
1110 Wireless Communications Department
1120 terminal display unit
C cable
M Mothership
SP Insulating Spacer

Claims (14)

An enclosure (100) made of insulator to serve as a housing for a 29kV gas insulated switchgear for eco-friendly railways, and the inside of which is filled with dry compressed air, an eco-friendly insulating medium;
A cable connection portion 200 formed at the bottom of the enclosure 100 to electrically connect the cable C to a circuit inside the enclosure 100;
A busbar unit (300) provided so that the busbar (M) electrically connected to the cable (C) by the circuit is insulated from the enclosure (100);
A plurality of disconnectors 400 disposed between the bus bar (M) and the cable (C) to electrically connect or selectively disconnect the bus bar (M) and the cable (C);
A circuit breaker (500) disposed between the disconnectors (400) to electrically connect or selectively block the busbar (M) and the cable (C);
an instrument current transformer 600 arranged to surround the enclosure 100 at a lower position of the breaker 500 to output a measured current proportional to the current flowing through the bus bar M;
A breaker control unit 700 that operates the breaker 500 to block the circuit when the measured current is output above a set value;
When the measured current is output more than a set value and the breaker 500 blocks the circuit, a disconnector control unit 800 operates the disconnector 400 to block the circuit and removes residual current by grounding the disconnector 400 at the same time;
A circuit breaker monitoring device (900) that provides a three-dimensional diagnostic image that intuitively indicates the state of the circuit breaker (500); and
A lightning arrester (1000) that is grounded to protect the circuit when an abnormal current occurs;
In the 29kV gas insulated switchgear for eco-friendly railways, comprising:
The disconnector 400,
An upper conductor 410 and a lower conductor 420 arranged to be spaced apart from each other in the disconnector 400;
a rotatable conductor 430, one side of which is rotatably mounted on the lower conductor 420, and the other side of which is in contact with or spaced apart from the upper conductor 410;
A disconnector shaft 440 that rotates when the disconnector control unit 800 operates and rotates the rotating conductor 430; and
A grounding conductor 450, one side of which is mounted on the side of the disconnector 400 and the other side of which is grounded, to remove residual current when in contact with the rotating conductor 430;
Including,
The circuit breaker 500,
The internal space is in a vacuum state, and the upper conductor 511 and the lower conductor 512 are contacted or separated in the vacuum state, thereby electrically connecting or selectively blocking the bus bar (M) and the cable (C). A vacuum breaker ( 510);
A breaker shaft 520 located on the upper side of the single vacuum breaker 510 and rotating when the breaker control unit 700 operates; and
One side is connected to the breaker shaft 520, and the other side is connected to the upper conductor 511 of the vacuum breaker 510, so that when the breaker shaft 520 rotates, the upper conductor 511 moves upward. a link unit 530;
Includes,
When the measured current measured by the instrument current transformer 600 is output more than a set value, the breaker shaft 520 rotates by the operation of the breaker control unit 700 to block the circuit, and the link is rotated by rotation. As the unit 530 rotates, the upper conductor 511 is moved upward to separate the lower conductor 512, thereby electrically cutting off the bus bar (M) and the cable (C),
After electrically disconnecting the bus bar (M) and the cable (C), the disconnector shaft 440 rotates by the operation of the disconnector control unit 800, and the rotating conductor 430 rotates due to rotation. A 29kV gas insulated switchgear for an eco-friendly railway, characterized in that it is spaced apart from the upper conductor 410 and removes residual current by connecting the rotating conductor 430 and the ground conductor 450. delete In claim 1,
The cable connection part 200 is,
Socket 210 into which the cable (C) is inserted;
an insulating spacer 220 that electrically separates the cable connection portion 200 and the disconnector 400; and
a connection member 230 that is a conductor formed to penetrate the insulating spacer 220 and the socket 210;
A 29kV gas insulated switchgear for eco-friendly railways, characterized in that it includes. delete delete In claim 1,
The circuit breaker monitoring device 900,
A signal measurement unit 910 that measures multiple signals generated from the circuit breaker 500;
a main processor 920 that diagnoses the state of the breaker 500 from the waveforms of the signals measured by the signal measurement unit 910 and selects a diagnostic message matching the state among preset diagnostic messages;
The measurement time, measurement value, and type of the signals measured by the signal measurement unit 910 are mapped to three coordinate axes in 3D space, and 3D coordinates of each measured signal are calculated to generate 3D image data. a graphics processor 930;
a display unit 940 that outputs the 3D image data generated by the graphics processor 930 and the diagnostic message selected by the main processor 920;
A 29kV gas insulated switchgear for eco-friendly railways, characterized in that it includes. In claim 6,
The signal is,
Current (a1) flowing in the trip coil of the circuit breaker 500; and
Current (a2) flowing in the closing coil of the circuit breaker 500;
A 29kV gas insulated switchgear for eco-friendly railways, characterized in that it includes one or more of the following. In claim 7,
The main processor 920,
The difference between the measured waveforms of the learning signals and the normal waveforms of the learning signals is input to the input layer, and a diagnostic message corresponding to the difference input to the input layer is output to the output layer to learn the neural network,
Calculating an error by comparing the waveforms of the signals measured by the signal measurement unit 910 with the normal waveforms of the signals generated by the circuit breaker 500,
A 29kV gas-insulated switchgear for eco-friendly railways, characterized in that it selects a diagnostic message that is mapped to an error exceeding the normal variation range of the signal in the learned neural network. In claim 8,
The circuit breaker monitoring device 900,
An abnormal condition occurrence transmission device (950) that transmits the occurrence of an abnormal condition to the manager's smart terminal (1100) when an abnormal condition occurs;
A 29kV gas insulated switchgear for eco-friendly railways, further comprising: In claim 9,
The abnormal condition occurrence transmission device 950,
a receiving unit 951 that receives the diagnostic message generated by the main processor 920 and the 3D image data generated by the graphics processor 930;
a signal processing unit 952 that converts the diagnostic message and the 3D image data transmitted from the receiving unit 951 into digital signals; and
A communication unit 953 capable of transmitting the digital signal processed in the signal processing unit 952 to the smart terminal 1100 through communication or receiving a signal from the smart terminal 1100;
A 29kV gas insulated switchgear for eco-friendly railways, characterized in that it includes. In claim 10,
The smart terminal 1100,
a wireless communication unit 1110 that receives the digital signal from the communication unit 953; and
a terminal display unit 1120 that converts the digital signal into the diagnostic message and the 3D image data and outputs them;
Includes,
The smart terminal 1100,
It is an intelligent terminal with additional computer support functions such as Internet communication and information search.
Users can install the application software they want,
An eco-friendly 29kV gas insulated switchgear for railways, characterized as a mobile communication device capable of Internet communication while moving using any one or more mobile communication networks of Wi-Fi (Wi-Fi, wireless LAN), 3G, 4G, and 5G. In the control method of the 29kV gas insulated switchgear for eco-friendly railway according to any one of claims 1, 3, 6 to 11,
Measuring a plurality of signals generated from the circuit breaker 500 by the signal measurement unit 910 (S100);
In the main processor 920, diagnosing the state of the circuit breaker 500 from the waveforms of the signals measured by the signal measurement unit 910 (S200);
In the main processor 920, selecting a diagnostic message matching the status from among preset diagnostic messages (S300);
When the measured current is output more than the set value, the circuit breaker control unit 700 operates the circuit breaker 500 to block the circuit (S400);
When the measured current is output more than a set value and the circuit breaker 500 blocks the circuit, the disconnector control unit 800 operates the disconnector 400 to block the circuit (S500);
Providing a three-dimensional diagnostic image that intuitively indicates the state of the circuit breaker 500 from the circuit breaker monitoring device 900 (S600); and
A step of transmitting the occurrence of an abnormal condition from the abnormal condition occurrence transmission device 950 to the manager's smart terminal 1100 (S700);
A control method of a 29kV gas insulated switchgear for eco-friendly railways, comprising: In claim 12
The step of providing the 3D diagnostic image (S600),
Measuring a plurality of signals generated from the circuit breaker 500 by the signal measurement unit 910 (S610);
Diagnosing the state of the circuit breaker 500 in the main processor 920 from the waveforms of the signals measured by the signal measurement unit 910, and selecting a diagnostic message matching the state from among preset diagnostic messages. (S620);
The graphic processor 930 maps the measurement time, measurement value, and type of the signals measured by the signal measurement unit 910 to three coordinate axes in 3D space to calculate 3D coordinates for each of the measured signals. generating 3D image data (S630); and
Outputting the 3D image data generated by the graphics processor 930 and the diagnostic message selected by the main processor 920 on the display unit 940 (S640);
A control method of a 29kV gas insulated switchgear for eco-friendly railways, comprising: In claim 13,
The step of communicating the occurrence of the abnormal condition (S700) is,
Receiving the diagnostic message generated by the main processor 920 and the 3D image data generated by the graphics processor 930 by the receiving unit 951 (S710);
Converting the diagnostic message and the 3D image data transmitted from the receiving unit 951 into digital signals in the signal processing unit 952 (S720);
Transmitting the digital signal processed in the signal processing unit 952 to the smart terminal 1100 through communication from the communication unit 953 (S730);
Receiving the digital signal transmitted from the communication unit 953 at the wireless communication unit 1110 (S740); and
Converting the digital signal into the diagnostic message and the 3D image data and outputting them on the terminal display unit 1120 (S750);
A control method of a 29kV gas insulated switchgear for railway, comprising:

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