KR101598983B1 - Fault line separating method has been applied to the distribution line equipment - Google Patents

Abstract

The present invention relates to an apparatus using a fault line separating method of a distribution line. The voltage and current of a load terminal are detected. A fault indicator (FI) due to fault line or voltage calculation is determined in real time. The fault indicator is transmitted to a high rank system. After that, if an execution command due to automatization algorithm is transmitted to a terminal device, the terminal device operates a motor with self-communication and fault determination algorithm to more quickly separate and restore the fault section of the distribution line. Also, because the terminal device always receives power by a capacitor unit, even though a long-term blackout is generated, the terminal device can separate/restore the fault section quickly. The apparatus comprises a communication unit, a CPU, a capacitor unit, a connection member, and a cover member.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fault line separating method,

More particularly, the present invention relates to an apparatus to which a fault line separating method for a distribution line is applied, and more particularly, to a device for detecting a fault line by means of a detection signal of a sensor means provided on a front end side and a rear end side of a distribution line passing through an in- The present invention relates to an apparatus to which a fault line separation method for a distribution line for temporarily shutting off the flow of a distribution line is performed.

As is well known, distribution lines that supply electricity from substations to cadastre are made up of complicated trunks and branches because they have to supply power to a large number of consumers.

Therefore, in case of ground fault (when the wire is disconnected and grounded on the power distribution line) or short circuit (when the wires on different phases are caught), fault current and voltage occur, A lot of efforts are needed to find out.

In the past, when a fault current and a voltage are generated in a distribution line, a substation operator is operated by a substation operator in order to find faulty current and voltage, It was a common method to find out the merits by exchanging them.

However, in the case of the above-described method, a long time is required as the recovery time is long and the power saving time is long, resulting in frequent inconveniences of power consumers.

Accordingly, there is a need for a method for improving the reliability of the power supply and the quality of service for the customer by shortening the power failure time by quickly grasping and recovering the position of the power supply when an accident occurs in the power distribution line.

Thus, at present, a line automatic switch is installed in a branching point or a customer entrance in a substation with a load capacity of 4000 [kVA] or less.

In the event of a ground fault, the line automatic switch closes or opens the fault section quickly and accurately in cooperation with the line open / close control device installed in the circuit breaker of the substation and the distribution line, thereby preventing the fault section from expanding and minimizing the damage.

As described above, in the case where a fault current and a voltage are detected due to an accident in a distribution line, there are a circuit breaker, a switch, and a recloser for separating and isolating the fault current and the high voltage generated.

Hereinafter, the function will be described briefly.

The circuit breaker (CB) can open or close the line when a very large fault current is detected from the distribution line. It is also possible to open and close the line normally when normal current flows as required.

Unlike circuit breakers, a load break switch (LBS) is a device that can open and close a line only when current does not flow, or when normal current and voltage flow, and when a fault current and voltage occur, the line can not be opened or closed do. A control unit called a feeder remote terminal unit (FRTU) may be installed in the switch for controlling the operation thereof. That is, the FRTU is a device connected to the mechanical part of the switch to control the opening and closing of the switch. However, the FRTU does not control the mechanism by determining the opening and closing of the line through the switch, but can control the mechanism by receiving a command from the host (main controller) through the communication function.

Recloser is a special type of circuit breaker that performs reclosing of the line. If a fault current is detected from the distribution line and continues for a certain period of time, the recloser opens the line and closes the line again after a preset period of time. If the fault current is continuously detected even after the line is closed, the recloser repeats the reclosing process of the line as described above a predetermined number of times, and if the fault current continues, the line is completely opened and the reclosing operation is no longer performed .

However, when a line failure occurs in the distribution line, it is decided based on the judgment of the person in charge of the distribution management system or the operation room, or by turning off the two switches of the corresponding line in accordance with the program for automatically detecting the fault in the distribution line, .

Therefore, it is inevitable to determine the fault zone of the person in charge of the distribution management system or the distribution operation room.

Because lack of education by simulation and accident do not happen all the time, human may delay judgment error of fault section, that is, fault section separation time due to human error.

In view of such conventional problems, in recent years, a voltage and a current at a lower stage are detected to determine a high-speed fault indicator (FI) by a fault current calculation in real time and transmitted to an upper system, The terminal device is provided with an automatic switchgear of a power distribution system that performs a function of separating / returning a fault section by a self-communication and a failure determination algorithm, that is, an automatic open / close device of a fault section of a power distribution line is installed and used have.

In addition, as a related art, Registration No. 0956712 (Apr. 29, 2010) is disclosed. However, in the case of the registered patent, since important parts are mounted, there is a fear of penetration of the rainwater when the door is opened. Therefore, it has become necessary to provide a locking device for the door.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a method and apparatus for detecting a fault and a fault indicator (FI) After transmitting to the upper system, if the execution command by the algorithm is transmitted to the terminal, the terminal operates the motor by its own communication and fault decision algorithm to more quickly isolate the fault section to the power line, The main purpose of which is to provide a device to which a fault line separation method for a distribution line is applied, which has an advantage of quickly separating / returning a fault section because power is always supplied by the power storage means even if a long- have.

The present invention provides, as means for attaining the above-mentioned object, a wireless communication apparatus for receiving a measurement signal of a sensor means for detecting a voltage and a current at a lower end of a distribution line, A communication module 110; A CPU (100) for determining in real time the strength of the signal transmitted from the communication module (110) based on a fault current and a voltage; A storage means (200) connected to the CPU (100) and charged by a power source flowing through a distribution line; Motor means 300 connected to the CPU 100 and driven by an operation signal of the CPU 100; A main body 400 having the CPU 100, the battery unit 200, and the motor unit 300 installed inside and having a door 410; Rotating shaft means (500) connected to the shaft of the motor means (300); An operating connection member (600) horizontally installed at an end of the rotary shaft means (500); A connection connecting member 700 connecting and disconnecting voltage and current by insertion and removal while the operating connecting member 600 is rotated by driving the motor means 300; And a cover member (800) for protecting the operation connecting member (600) and the connecting connecting member (700); The connection connecting member 700 is formed such that a power line is connected to one surface of the fixing plate 710 and four grounding rods 720 are formed on the other side to form a quadrilateral shape and the grounding rod 720 and the grounding rod 720 are connected to each other. A space portion into which the operation connecting member 600 is inserted is formed; An operation lever 900 for manually operating the motor means 300 in an emergency is further provided inside the main body 400; A solar cell using solar light as a power source is further connected to the storage means 200; The door 410 further includes a locking means 420 for facilitating opening and closing of the door 410. The locking means 420 includes a lower fixing plate 422 and an upper flow plate 424, The fixing plate 422 and the upper flow plate 424 are hingedly fixed to each other through a hinge shaft 426 at one end thereof. The lower fixing plate 424 is protruded in the form of a right triangle, And a torsion spring SP1 is inserted into the hinge shaft 426. One end of the torsion spring SP1 is connected to the lower fixing plate 422, And the other end of the upper flow plate 424 is fixed to the opposite end of the upper flow plate 424 at a position opposite to the hinge axis 426 so as to be rotatable by the rotation pin P A locking block 430 is provided at a portion of the upper surface of the locking block 430, And a hook end 434 extending in a direction opposite to the pressing plate 432 are formed integrally with the upper plate 422 and the upper plate 424 A coil spring SP2 is interposed between the upper end of the door 410 and the pressing plate portion 432 and the main body 400 is provided with a coil spring SP2 on the surface held parallel to the side surface of the door 410 when the door 410 is closed. The clamp 440 is fitted on the slit 442 formed in the main body 400 so as to be slidable in the longitudinal direction of the slit 442, A flange 444 having a diameter larger than the width of the slit 442 is integrally formed in a part of the length of the main body 440. A detaching cylinder 450 is built in the main body 100, 450 is connected to a detaching rod 452 which is provided at the end of the detaching rod 452, It provides an apparatus for separating a broken line to the distribution line and wherein the normal to the weld achieved integrally applied.

According to the present invention, a voltage and a current at a lower stage are detected, a high-reliability (FI) indicator is detected in real time by a fault current or a voltage calculation, and the result is transmitted to an upper system. The terminal device operates the motor by its own communication and fault determination algorithm to quickly isolate / restore the fault section of the power distribution line, and even if the power is turned off for a long time, So that there is an advantage that the failure section can be separated / returned quickly.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary view showing an installation state of an automatic open / close apparatus for a fault section of a distribution line according to the present invention. FIG.
FIG. 2 is a perspective view showing an overall appearance of an automatic opening and closing apparatus for a fault section of a distribution line to which the technique of the present invention is applied; FIG.
3 is a front view showing a structure of an automatic opening / closing apparatus for a fault section of a distribution line to which the technique of the present invention is applied
4 is a plan view showing a structure of a device for automatically opening and closing a fault section of a distribution line to which the technique of the present invention is applied.
5 is a perspective view showing a structure of a connection connecting member;
6 is a side view showing a coupling structure of the operating connecting member and the connecting connecting member;
7 is an exemplary diagram showing another embodiment of the present invention;
8 is a perspective view showing another structure of a connection connecting member which is a main part of the present invention.
Fig. 9 is an exemplary view showing an example of locking a door which is a main part of the present invention. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

The present invention includes the basic structure of the above-mentioned Registration No. 0956712, and some functions are further supplemented and improved.

As shown in FIG. 1, the present invention is applied to a detection signal of sensor means (S1) and (S2) provided on the front end side and the rear end side of a power distribution line passing through a substation installed for transmission to a company or each household in a power plant, a substation, The automatic switchgear 1 is operated so as to temporarily shut off the flow of the distribution line to the distribution line in the event of failure of the distribution line.

As shown in FIGS. 2 to 4, the automatic open / close device for a fault section of the power line according to the present invention installed at the side of the power line is provided at a certain portion of the power line, A wired or wireless communication module 110 for receiving the measurement signal of the sensor means S1 and S2 and for transmitting the received signal value in real time and the signal value transmitted from the communication module 110, A battery unit 200 connected to the CPU 100 and charged by a power source flowing through a power distribution line, a CPU 100 connected to the CPU 100, The motor unit 300 is installed inside the main body 400 provided with the door 410 which is opened and closed by the hinge.

In addition, the door 410 may further include a locking means 420 for facilitating the opening and closing of the door 410, as illustrated in FIG.

The locking means 420 is provided on the opposite side of the door hinge (not shown), so that it can be conveniently locked when the door 410 is opened and closed.

For this purpose, the locking means 420 includes a lower fixing plate 422 and an upper flow plate 424.

The lower fixing plate 422 and the upper flow plate 424 are hingedly fixed at one end via a hinge shaft 426 to be rotatable with respect to each other.

At this time, the lower fixing plate 424 integrally has a fixing bracket 428 for fixing the upper end of the lower fixing plate 424 in a substantially right triangle shape and the lower end of the lower fixing plate 424 to be fixed to the door 410.

The lower end surface of the fixing bracket 428 is firmly fixed to the bolt B1 in a state in which the lower end surface of the fixing bracket 428 is in surface contact with the opposite side of the hinge of the door 410. To this end, BH.

A torsion spring SP1 is inserted into the hinge shaft 426. One end of the torsion spring SP1 is engaged with a part of the lower fixing plate 422 and the other end of the torsion spring SP1 is fixed to the upper end of the upper flow plate 424. [ And is fixed to the part.

Accordingly, the upper flow plate 424 is elastically repelled with respect to the lower fixing plate 422 and is always kept open.

A locking block 430 is rotatably assembled to the end of the upper flow plate 424, that is, the opposite end of the hinge shaft 426 to which the hinge shaft 426 is fixed. The locking block 430 A push plate portion 432 extending substantially parallel to the upper end of the upper flow plate 424 and a hooked end portion 434 extending in the opposite direction of the push plate portion 432 Respectively.

At this time, the outer circumferential surface of the engaging end portion 434 should be rounded, and the inner side surface should have a structure capable of engaging in a right angle.

A coil spring SP2 is interposed between the upper end of the upper flow plate 424 and the press plate portion 432.

Accordingly, the locking block 430 is maintained in a state in which the locking end 434 is always rotated in the clockwise direction to be locked, due to the elastic repulsive force of the coil spring SP2.

In addition, the push plate portion 432 is a means for releasing the fixed state of the pressing end 434 by manual operation.

Particularly, the reason that the outer circumferential surface of the engaging end portion 434 is rounded is that when the upper flow plate 424 is pressed, the engaging end portion 434 slides smoothly while contacting with the clamp 440 described later It is for the purpose of taking. In other words, it is to increase stability.

On the other hand, when the door 410 is closed, the main body 400 is provided with a latch 440 having a substantially 'a' shape on the side thereof kept parallel to the side surface of the door 410.

The fixture 440 is fitted on the slit 442 formed in the main body 400 and is slidable in the longitudinal direction of the slit 442 so that the fixture 440 can be slid A flange 444 is integrally provided.

The flange 444 has a diameter larger than the width of the slit 442 to prevent the latch 440 from falling into the slit 442.

A detaching cylinder 450 is installed in the main body 400 and a detaching rod 452 is connected to the detaching cylinder 450. The detaching rod 452 is attached to the end of the detaching rod 452, The lower end is welded vertically to form an integral body.

A release button 460 is provided on a part of the surface of the main body 400 and the release button 460 functions to generate a signal for supplying or blocking pneumatic or hydraulic pressure to the release cylinder 450 .

9 (a), when the door 410 is opened, the latching end portion 434 is released from the latch 440 and the upper flow plate 424 is moved downward by the elastic return force of the torsion spring SP1. 9 (b), when the upper flow plate 424 is depressed, the upper flow plate 424 rotates about the hinge axis 426 about the torsion spring 422. In this state, The engaging end portion 434 is brought into contact with the fixing portion 440 at a certain point so as to slightly expand while compressing the coil spring SP2 so that the bent upper end portion of the fixing portion 440 They are crossed over to each other.

Then, the door 410 is firmly locked to the main body 400.

Thereafter, when the door 410 is opened to unlock it, the unlock button 460 is pressed.

As a result, the unlocking cylinder 450 is started, and the unlocking rod 452 advances to push the lock 440 to release the engagement with the engaging end 434.

Then, due to the elastic return force of the coil spring SP2 and the torsion spring SP1, the upper flow plate 424 is rotated counterclockwise while being reversely rotated in an instant, and the lock state is released.

Thus, the door 410 can be easily opened.

On the other hand, the shaft of the motor means 300 is connected to the rotary shaft means 500 through the body, and the operation connecting member 600 is horizontally installed at the end of the rotary shaft means 500.

The operating connection member 600 is preferably formed in a rod shape having a square cross section and having a predetermined length. In addition, it is preferable to use an alloy of copper and aluminum or a mixture of copper and aluminum as the material of the operation connecting member 600, because it is a material having high electrical conductivity.

The connecting member 700 for connecting and disconnecting the voltage and the current while being disconnected from the grounding bar 720 or detached from the grounding bar 720 while being rotated by the driving of the motor means 300, And is fixedly installed on both sides of the housing 800.

5 and 6, the connection connecting member 700 is formed such that a distribution line is connected to one side of the fixing plate 710 and four grounding rods 720 are formed on the other side to form a quadrilateral shape And a space for inserting the operating connecting member 600 is formed between the adjacent ground bar 720 and the ground bar 720.

8, the connection connecting member 700 may have a distribution line connected to one side of the fixing plate 710 and a plate-shaped ground terminal 720a at the other side. As shown in FIG. 1, an operation lever 900 for manually operating the motor means 300 in an emergency can be installed inside the main body 400.

The battery means 200 is further connected to a solar unit T1 using solar light as a power source to supply power to the battery means 200 in the event of failure of the distribution line.

The operation state of the present invention having the above-described structure will be described. The sensor means provided on the front end side and the rear end side of the power distribution line passing through the side straps are provided for each side strap, and the current or voltage between the side straps can be measured have.

The current or voltage measured by the sensor means is transmitted to the communication module 110. The communication module 110 communicates with another neighboring communication module (not shown) to measure the voltage or current value Send and receive.

The signal transmitted to the communication module 110 may be transmitted to a central control system (not shown).

In addition, each of the communication modules 110 may transmit the detected detection signals to the central control system so as to determine whether a normal voltage or a normal current is supplied to the central control system.

Meanwhile, the signal transmitted to the communication module 110 is transmitted to the CPU 100, and the signal transmitted from the communication module 110 to the CPU 100, that is, the detection signal that detects the voltage and the current, The CPU 100 determines whether there is a failure due to the current or voltage calculation in real time and transmits the result to an upper system.

For example, if the signal value transmitted from the sensor means provided at the front end side and the rear end side of the distribution line is calculated by the CPU 100 to be a normal signal, the current state is maintained. However, .

When the motor means 300 is rotated by the signal transmitted from the CPU 100, the rotary shaft means 500 connected to the shaft of the motor means 300 is also rotated to rotate. When the rotary shaft means 500 is rotated, The operating connection member 600 horizontally installed at the end of the means 500 also rotates as shown in FIG.

When the position of the operating connecting member 600 positioned between the four grounding rods 720 and the grounding bar 720 provided on one surface of the fixing plate 710 of the connecting connection member 700 is 90 The position of the operating connecting member 600 connected to the space portion between the grounding rod 720 and the grounding rod 720 is changed and the grounding force with the grounding rod 720 is released and separated.

8, the connection connecting member 700 has a power distribution line connected to one surface of the fixing plate 710 and a plate-shaped ground terminal 720a at the other side, .

On the other hand, the motor unit 300 is actuated to perform a function of separating / returning the fault section of the power distribution line more quickly and always receiving the power supply by the power storage means even if the power is disconnected for a long time, .

When the operation connecting member 600 can not be operated due to a failure of the CPU 100 or the motor means 300, the substation manager and the operator come out of the accident point and open the door, The means 300 can be actuated to manually disconnect / return the connection of the operative connecting member 600 and the connecting connecting member 700.

As shown in FIG. 3, the communication module 110 may be configured as a wire, and the communication module 110 may be wirelessly used as shown in FIG. 7.

100: CPU 110: Communication module
200: accumulator means 300: motor means
400: main body 500: rotary shaft means
600: operative connecting member 700: connecting connecting member
800: Operation lever 900: Operation lever

Claims (1)

A wired or communication module (110) for receiving a measurement signal of a sensor means for detecting a voltage and a current at a lower end of the distribution line and transmitting the received signal value in real time; A CPU (100) for determining in real time the strength of the signal transmitted from the communication module (110) based on a fault current and a voltage; A storage means (200) connected to the CPU (100) and charged by a power source flowing through a distribution line; Motor means 300 connected to the CPU 100 and driven by an operation signal of the CPU 100; A main body 400 having the CPU 100, the battery unit 200, and the motor unit 300 installed inside and having a door 410; Rotating shaft means (500) connected to the shaft of the motor means (300); An operating connection member (600) horizontally installed at an end of the rotary shaft means (500); A connection connecting member 700 connecting and disconnecting voltage and current by insertion and removal while the operating connecting member 600 is rotated by driving the motor means 300; And a cover member (800) for protecting the operation connecting member (600) and the connecting connecting member (700);
The connection connecting member 700 is formed such that a power line is connected to one surface of the fixing plate 710 and four grounding rods 720 are formed on the other side to form a quadrilateral shape and the grounding rod 720 and the grounding rod 720 are connected to each other. A space portion into which the operation connecting member 600 is inserted is formed; An operation lever 900 for manually operating the motor means 300 in an emergency is further provided inside the main body 400; A solar cell using solar light as a power source is further connected to the storage means 200;
The door 410 further includes a locking means 420 for facilitating opening and closing of the door 410. The locking means 420 includes a lower fixing plate 422 and an upper flow plate 424, The fixing plate 422 and the upper flow plate 424 are hingedly fixed to each other via a hinge shaft 426 at one end so that the lower fixing plate 422 is protruded in the shape of a right triangle, A torsion spring SP1 is inserted into the hinge shaft 426. One end of the torsion spring SP1 is connected to the lower fixing plate 422 And the other end of the upper flow plate 424 is fixed to a part of the upper flow plate 424 and the other end of the upper flow plate 424 is rotatably assembled by a rotation pin P And a locking block 430 is provided at a part of the circumference of the locking block 430, A pressing plate portion 432 extending parallel to the end portion of the upper plate 424 and a hooked end portion 434 extending in the opposite direction of the pressing plate portion 432 are integrally formed, A coil spring SP2 is interposed between the pushing plate portions 432. The body 400 has a shape of 'a' on the surface which is kept parallel to the side surface of the door 410 when the door 410 is closed. And the fixture 440 is fitted on the slit 442 formed in the main body 400 so as to be slidable in the longitudinal direction of the slit 442. The length of the fixture 440 A flange 444 having a diameter larger than the width of the slit 442 is integrally provided in a part of the main body 400. A detaching cylinder 450 is built in the main body 400. In the detaching cylinder 450, A lower end of the fixing plate 440 is vertically installed at an end of the unlocking rod 452, Is being made integral,
The lower end surface of the fixing bracket 428 is fixed to the bolt B1 in a state of being in surface contact with the surface opposite to the hinge of the door 410. Bolt holes BH are formed at both ends of the fixing bracket 428 ,
The outer circumferential surface of the engaging end portion 434 is round-machined, and the inner circumferential surface of the engaging end portion 434 has a right-
A release button 460 is provided on a part of the surface of the main body 400 and the release button 460 generates a signal for supplying or blocking pneumatic or hydraulic pressure to the release cylinder 450. [ A device with a fault line separation method applied.

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