WO2011118933A2

WO2011118933A2 - Fuse disconnection signal generator

Info

Publication number: WO2011118933A2
Application number: PCT/KR2011/001810
Authority: WO
Inventors: 구석환
Original assignee: Kwoo Seok Hwan
Priority date: 2010-03-26
Filing date: 2011-03-15
Publication date: 2011-09-29
Also published as: WO2011118933A3; KR100970763B1

Abstract

The present invention relates to a fuse disconnection signal generator. According to the present invention, a fuse disconnection signal generator may be provided to include: a sensing body formed in a cylindrical receptacle for a fuse holder to be placed therein; an opening formed for flexibly fitting the cylindrical receptacle into the fuse holder; a wing part extended outward from both sides of the opening and having elasticity; and a disconnection sensing module built into the sensing body. The disconnection sensing module senses that the fuse holder is opened and tilted, and transmits a sensing signal to the outside.

Description

Fuse break signal generator

The present invention relates to a fuse disconnection signal generator for detecting a fuse disconnection and transmitting it to the outside.

In general, the cutout switch (COS) is mainly installed on the primary side of the transformer to protect and open and close the transformer. The cut-out switch is a single-pole switch that allows the fuse holder to open itself by gravity when the fuse inside is blown.

Power Fuse (PF) is a short-circuit protection fuse for high and special high voltage devices. It is a structure in which the fuse element and silicon, etc., are filled and sealed in a sealed insulation cylinder and mainly used in water substation facilities.

In the case of the cutout switch (COS) or the power fuse (PF), if the internal fuse link is broken due to a failure, the fuse holder is adopted as a drop-out method in which the fuse holder falls to the lower end, which is a reliable equipment.

However, in the control room or the central command room, it is impossible to know at which point the fuse is broken, so it takes a long time to find and repair the disconnection point.

Such a fuse-type switch is a single-phase operation type, so when it is cut off due to a failure of one phase, only the remaining two phases are supplied, causing a failure in a three-phase motor or a device using three-phase power. Up to this point, abnormal power may spread to the line, causing continuous power outages.

In addition, when a fuse-type switch is dropped at the end of a distribution line, a place where human traffic is rare, or at idle, a power failure may be extended because it takes a long time to find a fault point.

Due to the establishment of the DAS system and the improvement of device quality, the total number of blackout accidents is decreasing every year, and the factors of blackout accidents such as bad weather, foreign contact, and public error are also decreasing. However, in apartments, intelligent buildings, and factories with precision semiconductor processes, damages to power outages are growing exponentially, even in the case of instantaneous power failures or even short time outages.

Therefore, customized management measures are required to reduce such types of safety accidents.

The present invention is a communication that can transmit the fuse disconnection state to the control room or the scan command room to be connected to the existing DAS system or remote management (AMR) system of accident information occurring at the property limit of high or special high pressure customers The invention relates to a fuse disconnection signal generator having a built-in function.

The problem to be solved by the present invention can be easily mounted on the fuse holder, when the fuse is disconnected from the fuse holder, when the fuse is disconnected from the fuse disconnection signal generator for transmitting a fuse disconnection signal to the power control place To provide.

According to an embodiment of the present invention, the sensing body formed with a cylindrical groove portion to be seated in the fuse holder; An opening formed to elastically fit the cylindrical groove into the fuse holder; Wings extending outwardly from both sides of the opening and having elasticity; It includes a disconnection detection module built into the sensing body; The disconnection detection module may provide a fuse disconnection signal generator which detects that the fuse holder is inclined to open and transmits a fuse disconnection signal to the outside.

The fuse disconnection signal may be a unique recognition signal for each fuse disconnection signal generator.

In addition, the blade portion may include a fastening device at both ends of the wing portion extended so that the fuse holder does not escape from the sensing body after inserting the fuse holder.

And the fastening device of the fuse disconnection signal generator according to an embodiment of the present invention is formed hook portion that is bent outward at one end of the wing portion, the hook portion and the lower end of the hook portion can be hooked on the hook portion Both sides are coupled and one side includes a ring portion cover hinged to the other end of the wing portion is rotatably formed, and may be fastened by rotating the ring portion cover by hooking the ring portion to the bent hook portion.

In addition, the disconnection detection module may include a detection unit for generating a control signal by detecting that the fuse holder is open and inclined; A power supply unit supplying power to the disconnection detection module; A transmitter for transmitting a fuse break signal to the outside; It may include a control unit for controlling the detection unit and the power supply unit to operate the transmitter.

In addition, the battery of the power supply unit is inserted into the inner groove to be removable and inserted from the outside and the battery cover is mounted on the outside, the disconnection detection module except the battery may be molded integrally to the sensing body.

The fuse disconnection signal generator according to another embodiment of the present invention includes a charging unit in the disconnection detection module, a rechargeable secondary battery in the power supply unit, and a power generated by mounting a solar cell module outside the detection module. Sending to the charging unit may further include charging a secondary battery.

In addition, the fuse disconnection signal generator of the present invention can be mounted to a fuse holder of COS or PF.

Since the fuse disconnection signal generator of the present invention can be easily installed in a pre-installed fuse holder, it is easy to install without an additional device.

The fuse disconnection signal generator of the present invention can remotely recognize the disconnection of the fuse to facilitate emergency response of an accident.

According to the fuse disconnection signal generator of the present invention, since the disconnection of the fuse can be immediately known at a remote location, the ripple effect due to the disconnection accident can be reduced.

According to the fuse disconnection signal generator of the present invention, since it can be charged by a solar cell or an induction current, it is easy to manage because it can be used for a long time without any maintenance work.

1 illustrates a fuse disconnection signal generator according to an embodiment of the present invention.

2 illustrates a fuse disconnection signal generating device equipped with a cicada ring fastening device according to another embodiment of the present invention.

Figure 3 shows a fuse disconnection signal generating device equipped with a butterfly fastening device according to another embodiment of the present invention.

4 shows a state in which a fuse disconnection signal generator is mounted on a COS switch into which a fuse holder 40 is inserted.

FIG. 5 illustrates a state in which a fuse disconnection signal generator is mounted on a fuse holder 40 in which a fuse is disconnected from the COS switch and is lowered.

6 is a block diagram illustrating a technical configuration of a disconnection detection module according to an embodiment of the present invention.

7 shows that the induction coil 63 for charging is mounted in the sensing body 10 as an embodiment of the present invention.

10: sensing body 11: cylindrical groove

12: opening 13, 23: wing

14: disconnection detection module 15: external switch

24: hook portion 25: ring portion

26: cover cover 27: butterfly bolt handle

28: butterfly nut 30: mercury switch

32, 33: contact terminal 40: fuse holder

42: fuse lead wire 43: eject

51: power supply unit 52: control unit

53: transmitter 54: detector

61: charging unit 62: solar cell module

63: guide coil

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, "includes." Or “having”, etc., are intended to indicate the presence of a feature, number, step, action, component, part, or combination thereof described in the specification, and one or more other features or numbers, steps, actions, configurations It should be understood that it does not preclude the presence or possibility of addition of elements, parts or combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the same reference numerals will be used for the same means regardless of the reference numerals in order to facilitate the overall understanding.

1 is a block diagram illustrating a fuse disconnection signal generator according to an exemplary embodiment of the present invention, and FIG. 4 illustrates a state in which a fuse disconnection signal generator is mounted on a COS switch into which a fuse holder 40 is inserted.

Referring to Figure 1, the fuse disconnection signal generator according to an embodiment of the present invention, the sensing body 10, the cylindrical trough 11, the opening 12, the wing 13 and the disconnection detection module 14 It includes.

Specifically, the sensing body 10 has a cylindrical groove portion 11 is formed so that the fuse holder 40 of FIG. 4 can be seated, as shown in FIGS. That is, the fuse holder 40 is inserted into the cylindrical trough 11, so that the sensing body 10 is mounted to the fuse holder 40. An opening 12 is formed at one side of the cylindrical trough 11 to elastically fit into the fuse holder 40, and extends in an outward direction on both sides of the opening, and a wing 13 having elasticity is formed.

The inner diameter of the cylindrical trough 11 may be manufactured to the same size as the outer diameter of the fuse holder 40 so that the fuse holder 40 can be fixed in a seated state. Alternatively, the fuse holder 40 may be manufactured to be slightly smaller than the outer diameter of the fuse holder 40 to be fixed to the fuse holder 40 by the friction force.

The opening 12 and the wing 13 are made of an elastic material, and the gap between the opening 12 and the wing 13 is formed to be smaller than the outer diameter of the fuse holder, so that the fuse holder 40 is seated. After being made, it can be prevented from being detached by natural forces applied from the outside such as wind.

The wing part 13 and the opening part 12 of the fuse disconnection signal generator are made of an elastic material, and when the wing part 13 is slightly opened and pushed into the fuse holder, the fuse holder is a cylindrical groove part of the sensing body 10. Since the wing 13 and the opening 12 seated and opened at 11 are slightly closed in the original shape, the mounting is completed as shown in FIG. 4.

Inside one side of the sensing body 10 is a disconnection detection module 14 is built. The disconnection detection module 14 includes a gravity sensor 30 such as a mercury contact switch or a detection sensor such as a position detection switch. When the fuse holder 40 is opened from the COS switch, which is a device equipped with a fuse, and is dropped, the sensor is activated to transmit a disconnection signal to the outside.

When the wing 13 of the fuse breakage signal generator as shown in FIG. 1 is slightly opened and pushed into the fuse holder 40, the fuse holder 40 may have a cylindrical groove 11 of the fuse breakage signal generator 10. In the seated state is mounted as shown in Figure 4 by the elasticity of the wing portion 13, the fuse holder 40 and the fuse disconnection signal generator is not easily separated.

However, in order to more firmly mount the fuse holder 40 so as not to be detached from the sensing body, a fastening device may be mounted at the end of the wing part 13.

The fastening device is installed at both ends 13 of the extended wing, and after the fuse holder is inserted, the fastening device is firmly tightened and stably fixed.

The above fastening device may be installed by utilizing a bolt and nut, a butterfly fastening device, a cicada ring fastening device, and the like.

2 is a block diagram illustrating an apparatus for generating a fuse disconnection signal having a fastening device according to another exemplary embodiment of the present invention.

The fastening device of FIG. 2 has a hook portion 24 that is bent outwardly at one end of the wing portion 23, and is hooked with the hook portion 25 to which the upper end can be hooked on the hook portion 24. Both ends of the lower portion of the portion 25 is coupled and one side includes a ring portion cover 26 is hinged to the other end of the wing portion 23 is formed rotatably.

After the fuse holder 40 is seated on the cylindrical trough 11 of the sensing body 20 of the fuse disconnection signal generator, the hook portion 25 of the fastening device is hooked on the hook portion 24 to cover the hook portion 26. When the pulley is rotated in a direction opposite to the hook portion 24, the two wing portions 23 are elastically tightened, so that the sensing body 20 is firmly mounted without being separated from the fuse holder 40.

The fastening device forms a fastening hole on both sides of the wing portion 13 and can be simply fastened with a butterfly nut 28 by inserting a bolt 29 having a butterfly handle 27 into the fastening hole.

FIG. 4 is a view illustrating a state in which a fuse disconnection signal generator is mounted on a COS switch into which a fuse holder 40 is inserted, and FIG. 5 is a fuse disconnection to a fuse holder 40 which is disconnected downward by disconnecting a fuse link from a COS switch. It is a figure which shows the state which mounted the signal generator.

4 and 5 illustrate a mercury switch used as a detection sensor according to another embodiment of the present invention.

Reference numeral 41 denotes a support insulator 41 for insulating the COS switch from the support hole, and reference numeral 30 denotes a mercury switch 30 embedded in the

sensing bodies

10 and 20.

In the state where the fuse holder 40 is inserted into the COS switch, mercury 31, which is a conductor, is separated from the two

contact terminals

32 and 33, and in the state where the mercury switch 30 is opened, the control of the disconnection detection module 14 is controlled. Since the power is cut off, the fuse disconnection signal generator does not perform any operation.

In the state in which the fuse holder 40 is normally inserted into the COS switch, the ejection 43 installed at the lower end of the fuse holder 40 is in a state in which the spring interlocked with the ejection 43 is pulled by the tension of the fuse lead wire 42. .

If the fuse link inside the fuse holder 40 of the COS switch is disconnected due to an accident current or the like, the ejection 43 of the fuse lead wire 42 is released by the force of the spring which is pulled while the tension of the fuse lead wire 42 is released. The fuse holder 40 is separated from the COS switch at a cost.

When the fuse holder 40 is separated from the COS switch, as shown in FIG. 5, the fuse holder 40 falls down by the weight of the fuse holder 40.

At this time, the mercury of the mercury switch embedded in the sensing body (10, 20) is in contact with the two contact terminals (32, 33), as shown in Figure 5, the power is supplied to the disconnection detection module 14, the disconnection signal to the outside Will be sent.

6 is a block diagram illustrating a technical configuration of the disconnection detection module 14 including the operation circuit units according to an embodiment of the present invention.

The disconnection detection module 14 includes a detector 54, a power supply 51, a transmitter 53, and a controller 52.

The detector 54 detects that the fuse holder 40 is inclined to open and generates a detection signal. The sensing unit 54 generates a switching signal which is a sensing signal by a sensing sensor. Any one of a gravity switch, a mercury switch, and a position sensor may be used as the sensing sensor.

The power supply unit 51 supplies power to the disconnection detection module 14. The power supply unit includes a battery for supplying power. A primary battery such as a mercury battery, an alkaline battery, or a rechargeable secondary battery may be used.

The power supply unit 51 controls the on / off to turn off the power by a simple operation from the outside of the

sensing bodies

10 and 20 when the battery is replaced or not in use, such as a test. An external switch 15 may be included.

The transmitter 53 receives a power supply and a control signal from the controller 52 and transmits a fuse break signal to the outside.

The fuse disconnection signal is transmitted as a unique recognition signal for each fuse disconnection signal generator, and the central command room receives it and immediately knows where the fuse is disconnected.

The transmission method of the fuse disconnection signal is transmitted to the control room or the scan command room using a network such as CDMA, or the fuse disconnection signal is transmitted to the repeater port installed at a certain interval by using RF communication. There is a way to connect to a control room or injection order room, which is a remote control site.

The transmitting unit 53 may include a transmitting antenna. The transmitting antenna may be internally installed or an antenna may be installed inside the handle using a handle of an external switch 15 installed outside the sensing

bodies

10 and 20.

The control unit 52 receives the detection signal from the detection unit 54 and generates a control signal so that the transmission unit 53 can transmit the fuse disconnection signal.

In addition, by receiving the detection signal from the detection unit 54 and supplying power to the transmission unit 53, it is possible to control to transmit the fuse disconnection signal.

Normally, that is, in normal times, the control unit 52 cuts off the power of the entire circuit or the transmitter 53 to suppress power consumption, and only when the fault current or other reasons operate, the power of the entire circuit or the transmitter 53 is turned off. The fuse break signal may be transmitted to an external system such as a repeater or a central command room through a transmitter.

By shutting off the power at ordinary times, it is possible to prevent the malfunction or the performance of the parts from being degraded under the influence of induction electric field of high pressure or extra high pressure during normal operation.

In addition, the controller 52 may cut off the power supply of the entire circuit or the transmitter 53 when a predetermined time elapses after the fuse disconnection signal is sent, thereby suppressing current consumption.

The disconnection detecting module 14 is molded in the

sensing bodies

10 and 20 except for the external switch 15 including the antenna to prevent damage due to an external environment.

Alternatively, the disconnection detection module 14 may be molded into the

sensing bodies

10 and 20 except for the external switch 15 including the antenna and the battery. At this time, the battery is formed in the battery insertion space formed inside the sensing body (10, 20) to facilitate the removal, insertion and replacement from the outside, the battery insertion inner groove, the connection terminal is formed, insert the battery, then waterproof The battery cover can be sealed by screw assembly or the like.

Alternatively, the disconnection sensing module 14 may be formed as a molded body independently molded, and the disconnection sensing module 14 may be inserted into the

sensing body

10 or 20 to facilitate the detachment, insertion, and replacement of the disconnection sensing module 14 from the outside. Alternatively, an inner groove may be formed, and the disconnection detection module 14 may be inserted into an insertion space or an inner groove, and then the waterproof disconnection detection module cover may be attached to the outside by screw assembly or the like to be sealed.

In another embodiment of the present invention further includes a charging unit 61 in the disconnection detection module 14, a rechargeable secondary battery may be used as a battery.

Normally, the mercury battery can be used for two to three years if it is kept in a natural discharge state, but replacing the battery every two to three years requires a lot of manpower and cost.

1 and 2, the solar cell module 62 is attached to one side of the sensing body 10 to be used as a power source for charging.

At this time, the power generated by attaching the solar cell module 62 is transmitted to the charging unit 61, and the charging unit charges the secondary battery by forming the received power at a constant charging voltage by the power control system pcs.

When the charging system is added in this way, the fuse disconnection signal generator can be used for a longer time without any maintenance work.

The disconnection detection signal of the disconnection detection module 14 transmits only a recognition code signal applied to each disconnection detection module 14 to a simple pulse signal, which is a structure that is only transmitted in case of a failure and is normally charged for a long time. Since the solar cell module 62 is installed outside the disconnection detection module 14 with a very small capacity, it is sufficient to charge a natural discharge power.

In one embodiment, the experiment was performed once with a 10 cm 2 solar cell module and charged with a rechargeable secondary battery for one month, and the discharge voltage did not drop below the use voltage.

FIG. 7 illustrates that the induction coil 63 is mounted inside the sensing body 10 as the charging voltage as another embodiment of the charging system.

Usually, since the sensing body 10 surrounds the fuse holder 40 as illustrated in FIG. 4, the sensing body 10 detects an induction coil forming a U-shaped closed circuit in the cylindrical groove part 11, which is a portion surrounding the fuse holder 40. When disposed inwardly of the body 10, an induction current flows through the induction coil 63 located in the fuse holder 40. The power generated by the induction coil 63 generated as described above is supplied to the secondary battery through the transformer process and the constant voltage process in the charging unit 61 to charge the secondary battery.

That is, the above-described induction coil 63 can be used as the induction coil for charging the secondary battery. In the charging unit 61 according to an embodiment, the secondary battery is charged with a constant voltage, including a transformer rectifier and a PCS.

In addition, when a fault current such as an overcurrent and a ground current flows through the fuse link, an induction current corresponding to the above-described induction coil 63 flows, and thus it can be sensed as a fault current according to the induction current state. When the failure signal type including the unique identification number of the place is transmitted through the control unit 52 and the transmission unit 53 through the detected detection signal of the fault current, the remote control place such as a central command room receives the fuse disconnection signal. In addition, the fault current of the line can be detected.

As described above, when both the fault current detection and the fuse disconnection signal are detected, the fault detection current may be used for the fault detection and the secondary battery charging of the break detection module.

In addition, when the fuse disconnection signal is detected, the solar cell module 62 may be used for charging the secondary battery, and the above-described induction coil 63 may be used only for fault current detection.

In the above-described exemplary embodiment, the fuse disconnection signal generator is installed in the fuse holder of the COS. However, when the fuse is blown, the PF also has the same dropout structure as the COS that is separated from the lower part. By applying the same principle to the PF can send a disconnection detection signal.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art that various modifications and changes to the present invention without departing from the spirit and scope described in the claims below I can understand that you can.

The fuse breakage signal generator of the present invention relates to a fuse breakage signal generator which detects a fuse break and transmits it to the outside, and is installed in a fuse holder of a power fuse or a cutout switch installed in a power distribution facility in a distribution facility field. It can be used for the purpose of detection.

Claims

A sensing body in which a cylindrical groove is formed so as to be seated on the fuse holder;

An opening formed to elastically fit the cylindrical groove into the fuse holder;

Wings extending outwardly from both sides of the opening and having elasticity;

It includes a disconnection detection module built into the sensing body;

The disconnection detecting module detects that the fuse holder is inclined to open from the device in which the fuse is mounted and transmits a fuse disconnection signal to the outside.
The method of claim 1,

The fuse disconnection signal is a fuse disconnection signal generator, characterized in that the unique recognition signal for each fuse disconnection signal generator.
The method of claim 1,

And a fastening device for fastening both ends of the extended wing part after inserting the fuse holder so that the fuse disconnection signal generator mounted on the fuse holder does not escape. Disconnection signal generator.
The method of claim 3, wherein

The fastening device has a hook portion formed to be bent outwardly at one end of the wing portion, a hook portion which can be hooked to the upper end by hooking the hook portion, and both ends of the lower end of the hook portion are coupled, and one side is at the other end of the wing portion. And an annular cover hinged to be rotatably formed, and fastened by rotating the annular cover by hooking the annular hook to the curved hook portion.
The method of claim 3, wherein

The fastening device is a fuse disconnection signal generator, characterized in that the fastening with a butterfly nut by inserting a bolt into the fastening hole formed at both ends of the wing.
The method of claim 1,

The disconnection detection module may include a detection unit configured to generate a control signal by detecting that the fuse holder is opened and inclined; A power supply unit supplying power to the disconnection detection module; A transmitter for transmitting the fuse disconnection signal to an outside; And a control unit for controlling the sensing unit and the power supply unit to operate the transmitting unit.
The method of claim 6,

The power supply unit is a fuse disconnection signal generator, characterized in that it comprises an external switch for controlling the power from the outside of the sensing body.
The method of claim 7,

The transmitter includes an antenna, wherein the antenna is a fuse disconnection signal generator, characterized in that installed in the handle of the external switch.
The method of claim 6,

A battery cover for forming a battery insertion inner groove and a connection terminal formed inside the sensing body so that the battery of the power supply unit can be mounted on the outside of the sensing body and sealing the inner groove on the outside of the sensing body is mounted. And the disconnection detection module excluding the battery is integrally molded into the sensing body.
The method of claim 6,

The disconnection sensing module further includes a charging unit, the power supply unit supplies power to a rechargeable secondary battery, and mounts a solar cell module on the outer surface of the sensing body to send power generated from the solar cell module to the charging unit. A fuse disconnection signal generator, characterized in that for charging the secondary battery.
The method of claim 6,

The disconnection sensing module further includes a charging unit, and the power supply unit supplies power to a rechargeable secondary battery, and installs a charging induction coil inside the sensing body surrounding the fuse holder to receive power generated from the induction coil. A fuse break signal generating device according to claim 1, wherein the secondary battery is charged to a charging unit.
The method of claim 1,

The disconnection detection module is a fuse disconnection signal generator, characterized in that molded in one body inside the sensing body.
The method of claim 1,

The disconnection detection module is inserted into one side of the sensing body and inserted into an internal groove for inserting the disconnection sensing module formed in the sensing body so that the exchange is possible, and the disconnection sensing module cover capable of sealing the inner groove on the outside of the sensing body. Fuse disconnection signal generator, characterized in that the mounting.
The method according to any one of claims 1 to 13,

The detection body is a fuse disconnection signal generator, characterized in that mounted to the fuse holder of the COS or PF.
The method according to any one of claims 1 to 13,

The blown fuse signal is transmitted to a remote control station using a wireless communication network using CDMA communication, or transmitted to a repeater port of a Korea Electric Power Corporation installed at a predetermined interval using RF communication, and the remote control place through the repeater port. Fuse disconnection signal generator, characterized in that for transmitting.