KR102547024B1 - Distribution line earth system connected with transformer and its installation method - Google Patents

Abstract

The present invention relates to a distribution line grounding system associated with a transformer and a method for installing the same, and more particularly, as a method for installing a grounding system for grounding a transformer installed on an object, including a safety mat on the ground below the transformer installed on the object A ground safety mat placement step for arranging, a transformer installation preliminary step for removing foreign substances or dust adhering to the outer surface of the transformer, a transformer grounding system installation step for installing a grounding system on the transformer, and a transformer installed on the transformer The transformer grounding system proper installation confirmation step of confirming movement and separation by applying an external force to the grounding system, and transformer power supply step of supplying power to the transformer in which the transformer grounding system is installed, to ground the transformer; In addition, the grounding cable of the transformer grounding system is supported, and in the installation step of the transformer grounding system, a continuous sensing operation guidance step is further included to grasp the work situation at the site by means of continuous sensing operation guidance means and transmit a danger signal in the event of an emergency. Including, a grounding system is provided in the transformer to prevent safety accidents, and a grounding cable guide means is provided to support the grounding cable so that the grounding cable is moved by external force or wind and friction or connection parts are damaged. It has the effect of preventing excessive costs and time for maintenance.

Description

Distribution line earth system connected with transformer and its installation method {Distribution line earth system connected with transformer and its installation method}

The present invention relates to a distribution line grounding system associated with a transformer in the field of power distribution technology and a method for installing the same, and more particularly, provides a grounding system in a transformer to prevent a safety accident from occurring and a grounding cable to support the grounding cable. A distribution line grounding system linked to a transformer and its installation method that prevent the cost and time required for maintenance due to friction or damage to the connection part caused by the movement of the ground cable due to external force or wind by providing a guide means Its purpose is to provide

In general, high voltages such as 765 kV, 345 kV, and 154 kV produced and transformed in power plants are delivered to substations using corresponding lines, and at substations, they are lowered to a voltage of 22900 volts (phase voltage 13200 volts) and distributed through distribution lines. Some of the high voltage supplied to substations is reduced to a voltage that is easy to use at 220/380 volts through pole transformers and meteorological transformers attached to utility poles, and is supplied to houses, shops, and small-scale supplied to factories, etc.

Such a transformer is a device that converts AC power supplied to one winding to AC power of different voltage to the other winding by electromagnetic induction, and consists of windings constituting at least two electric circuits and one common magnetic circuit. It is composed of an iron core and insulating materials such as insulating oil.

Depending on the place of use, transformers can be divided into small-sized transformers, pole-mounted transformers installed on poles of distribution lines, and power transformers installed in power plants or substations. It can be classified into transformers and explosion-proof transformers.

These transformers require good grounding to protect devices from abnormal voltages such as lightning and surges and to prevent various electrical disasters due to short circuits, and the above grounding functions to protect humans and power facilities from power or lightning have

However, the grounding cable connecting the grounding terminal and the grounding terminal provided in the conventional transformer is exposed to the outside, and moves while being shaken by external force or wind. There is always a problem that the outer surface of the transformer is damaged or the coating is peeled off due to friction with the outer surface of the transformer, causing a short circuit.

The foregoing invention refers to the background art in the technical field to which the present invention belongs, and does not mean the prior art.

Registered Patent No. 10-2015466

The present invention has been made to solve the above conventional problems, and an object of the present invention is to provide a grounding system in a transformer to prevent safety accidents from occurring, and to provide a grounding cable guide means to support the grounding cable To provide a distribution line grounding system associated with a transformer and an installation method thereof, which prevent costs and time required for maintenance due to friction or damage to the connection part caused by movement of the grounding cable due to external force or wind.

The present invention is a method of installing a grounding system for grounding a transformer installed in an object, comprising a ground safety mat placement step of arranging a safety mat on the ground below the transformer installed in the object, and foreign matter or dust adhering to the outer surface of the transformer Transformer installation preparatory step for removing the transformer, transformer earthing system installation step for installing a grounding system in the transformer, and application of an external force to the transformer earthing system installed in the transformer to check whether the transformer earthing system is moved and separated Proper installation confirmation and a transformer power supply step of supplying power to the transformer in which the transformer earthing system is installed, to ground the transformer and to support a grounding cable of the transformer earthing system, wherein the transformer earthing system installation step includes: It is characterized in that a continuous detection operation guidance step is further included so as to grasp the work situation at the site by the continuous detection operation guidance means and transmit a danger signal when an emergency occurs.

The present invention is a grounding system for grounding a transformer installed in an object, wherein a grounding terminal provided on the transformer, a grounding terminal formed on the transformer, and a grounding cable having one end connected to the grounding terminal and the other end connected to the grounding terminal The transformer is further provided with a ground cable guide means to support the ground cable connecting the ground terminal and the ground terminal, and the ground cable guide means includes a connection bracket fastened to and fixed to the transformer; A support shaft having one end fastened to and fixed to the connecting bracket coupled to the transformer, a fixing frame member fastened to and fixed to the other end of the support shaft coupled to the connecting bracket, and inserted into and fixed to the inside of the fixing frame member, It is characterized in that it consists of a support frame member through which the ground cable is inserted, one end fastened to and fixed to the connection bracket, and the other end of a support bar supporting a side surface of the fixing frame member.

Distribution line grounding system associated with a transformer and its installation method according to the present invention provide a grounding system in a transformer to prevent safety accidents, and provide a grounding cable guide means to support the grounding cable to prevent grounding cable from external force or wind. There is an effect of preventing excessive cost and time due to maintenance due to friction or damage to the connection part due to the movement.

1 is an installation state diagram showing a distribution line grounding system associated with a transformer according to the present invention.
2 is a view showing a ground cable support means of a distribution line grounding system associated with a transformer according to the present invention.
3 is a side view showing a ground cable support means of a distribution line grounding system associated with a transformer according to the present invention.
4 is an installation state diagram showing a grounding cable support means of a distribution line grounding system associated with a transformer according to the present invention.
5 is an exploded view showing a ground cable support means of a distribution line grounding system associated with a transformer according to the present invention.
6 is a view showing an elastic buffer support means of a distribution line grounding system associated with a transformer according to the present invention.
7 is a diagram showing a continuous sensing operation guidance means of a distribution line grounding system associated with a transformer according to the present invention.
8 is a diagram showing another embodiment of a continuous sensing operation guide means of a distribution line grounding system linked to a transformer according to the present invention.
9 is a conceptual diagram showing a continuous sensing operation guidance means of a distribution line grounding system linked to a transformer according to the present invention.

Since the description of the present invention is only an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiment can be changed in various ways and can have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea.

On the other hand, the meaning of terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from another, and the scope of rights should not be limited by these terms. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element.

It should be understood that when an element is referred to as being “connected” to another element, it may be directly connected to the other element, but other elements may exist in the middle. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that no intervening elements exist. Meanwhile, other expressions describing the relationship between components, such as “between” and “immediately between” or “adjacent to” and “directly adjacent to” should be interpreted similarly.

Expressions in the singular number should be understood to include plural expressions unless the context clearly dictates otherwise, and terms such as “comprise” or “having” refer to an embodied feature, number, step, operation, component, part, or these. It should be understood that it is intended to indicate that a combination exists, and does not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

In each step, the identification code (eg, a, b, c, etc.) is used for convenience of explanation, and the identification code does not describe the order of each step, and each step clearly follows a specific order in context. Unless otherwise specified, it may occur in a different order than specified. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Terms defined in commonly used dictionaries should be interpreted as consistent with meanings in the context of related art, and cannot be interpreted as having ideal or excessively formal meanings unless explicitly defined in the present invention.

1 is an installation state diagram showing a distribution line grounding system associated with a transformer according to the present invention. 2 is a view showing a ground cable support means of a distribution line grounding system associated with a transformer according to the present invention. 3 is a side view showing a ground cable support means of a distribution line grounding system associated with a transformer according to the present invention. 4 is an installation state diagram showing a grounding cable support means of a distribution line grounding system associated with a transformer according to the present invention. 5 is an exploded view showing a ground cable support means of a distribution line grounding system associated with a transformer according to the present invention. 6 is a view showing an elastic buffer support means of a distribution line grounding system associated with a transformer according to the present invention. 7 is a diagram showing a continuous sensing operation guidance means of a distribution line grounding system associated with a transformer according to the present invention. 8 is a diagram showing another embodiment of a continuous sensing operation guide means of a distribution line grounding system linked to a transformer according to the present invention. 9 is a conceptual diagram showing a continuous sensing operation guidance means of a distribution line grounding system linked to a transformer according to the present invention.

As shown in the drawing, the distribution line grounding system 10 associated with the transformer of the present invention (hereinafter referred to as a distribution line grounding system for convenience of explanation) is a grounding system 10 for grounding the transformer 100 installed in the object As such, the grounding system 10 is composed of a grounding terminal 20, a grounding terminal 30, and a grounding cable 40.

The ground terminal 20 is provided in the transformer 100 .

The ground terminal 20 is screwed and fixed to the outer surface of the transformer 100, and is timely connected to the winding coil disposed inside the transformer 100 or electrically connected to the low-voltage receiving connected to the winding coil. It is also possible to do

The ground terminal 20 is made of a metal material.

The ground terminal 30 is formed on the transformer 100 .

The ground tunnel is made of a metal material and is fixed by screwing to the outer surface of the transformer 100 .

The ground cable 40 has one end connected to the ground terminal 20 and the other end connected to the ground terminal 30 .

The grounding cable 40 is an electric wire for conducting electricity, and metal binding rings are fastened to both ends, and a wire of the grounding cable 40 is connected to the binding rings.

The binding ring is interconnected with the wire by welding or a wire connection connector, and any method that can connect the wire may be used.

A ground cable 40 guide means is further provided in the transformer 100 to support the ground cable 40 connecting the ground terminal 20 and the ground terminal 30 .

The ground cable 40 guide means has one end screwed to the connection bracket 51 screwed and fixed to the outer surface of the transformer 100 and the connection bracket 51 fastened to the transformer 100. A fixed support shaft 52, a fixing frame member 53 fixed by being screwed to the other end of the support shaft 52 fastened to the connecting bracket 51, and inserted into the fixing frame member 53 It is fixed, and one end is screwed and fixed to the support frame member 60 and the connection bracket 51 through which the ground cable 40 is inserted, and the other end is fixed to the outer surface of the fixing frame member 53 (on the drawing). top and bottom surfaces), the fixing frame member 53 and the support frame member 60 support the ground cable 40 to prevent it from being moved by external force or wind. and it is possible to prevent the grounded part from being separated or damaged by being repeatedly moved.

In addition, the fixing frame member 53 and the support frame member 60 double support the ground cable 40, and when the support frame member 60 is damaged, the fixing frame member 53 supports the ground cable 40. ), and prevents the fixing frame member 53 from moving again by the support bar 70.

Here, an elastic pressing panel made of a synthetic resin material having elasticity is attached to the inner surface of the support bar 70 in contact with the fixing frame member 53 to support the fixing frame member 53 by the elasticity of the elastic pressing panel. It is desirable to improve bearing capacity and to buffer external impact.

In addition, one end of an elastic band made of a synthetic fiber material or synthetic resin material having elasticity is further attached to the support bar disposed on one side of the fixing frame member 53, and the other end of the elastic band is attached to the fixing frame member 53. Attached to the support bar disposed on the other side, it is preferable to press the support bar in the direction of the fixing frame member with elasticity to improve the fixing force and support force and to buffer the shock transmitted from the outside.

Here, a pressurized elastic support fixing means 80 is further provided in the support frame member to pressurize and fix the inserted ground cable 200 by elasticity and to support it.

The pressurized elastic support and fixing means 80 includes an operating groove 81 formed on the inner surface of the support frame member, and an elastic pressurized coil spring 82 having one end inserted into the operating groove 81 and screwed to be fixed. ), a pressure panel 83 fixed by screwing one surface to the other end of the elastic pressure coil spring 82, and an elastic pressure composed of a synthetic resin material having elasticity attached to and fixed to the other surface of the pressure panel 83. It consists of a support panel 84 and an inlet groove 85 formed on the front surface of the elastic pressure support panel 84 so that a part of the ground cable 200 is introduced, and the elastic pressure coil spring 82 and the It is preferable to pressurize and support the ground cable 200 by the elasticity of the elastic pressure support panel 84 to prevent movement by external force and to buffer transmission of external force or vibration.

As a method of installing a grounding system for grounding a transformer installed in an object constructed as described above, a safety mat made of a synthetic resin material or tube having elasticity is placed on the ground below the transformer installed in the object Ground safety mat arrangement step (S1 ), a transformer installation preliminary step (S2) of removing foreign substances or dust adhering to the outer surface of the transformer, and a transformer grounding system installation step (S3) of installing a grounding system in the transformer.

Thereafter, the transformer grounding system proper installation confirmation step (S4) of applying an external force to the transformer grounding system installed in the transformer to check whether it is moved and separated, and a transformer power supply step of supplying power to the transformer in which the transformer grounding system is installed Through (S5), a series of processes are completed, and the transformer is grounded and the ground cable of the transformer grounding system is supported.

In the transformer grounding system installation step (S3), a continuous detection work guide step (S3-1) is further included to determine the work situation at the site by the continuous detection work guide means 90 and to transmit a danger signal in case of an emergency. .

The continuous sensing operation guide means 90 is connected to a connection fixing module unit 91 screwed and fixed to the transformer or a telephone pole where the transformer is installed, and a lower end connected to the upper surface of the connection fixing module unit 91 A pair of fixed guide shafts 92, and a first panel transfer module 931 and a second panel transfer module 932 that are inserted through the guide shaft 92 and guided along the guide shaft 92 and the third panel transfer module 933, and the lower end is screwed and fixed to the upper surface of the connection fixing module unit 91, and the lifting shaft is the first panel transfer module 931 The first lift guide unit 941 is screwed and fixed to the bottom surface of the first panel transfer module 931, and the lower end is screwed to the upper surface of the first panel transfer module 931, and the lift shaft is the second panel transfer module 932. The second lift guide unit 942 is screwed to the lower surface and fixed, and the lower end is screwed to the upper surface of the second lift guide unit 942 and fixed, and the lift shaft is the third panel transfer module 933. The lift guide part 94 composed of the third lift guide unit 943 screwed and fixed to the bottom surface of the first panel transfer module 931 is screwed and fixed to the bottom surface of the first panel transfer module 931, and the first rotation module is attached to the rotation shaft. The first rotation guide units 951 to which the units 951-1 are screwed together, and the second panel transfer module 932 are screwed and fixed to the lower surface, and the second rotation module unit 952-1 is attached to the rotating shaft. The third rotation guide units 952 screwed together, the third panel transfer module 933 are screwed and fixed to the bottom surface, and the third rotation module unit 953-1 is screwed to the rotation shaft. The rotation guide part 95 composed of units 953, the first situation recording units 961 screwed and fixed to the lower surface of the first rotation module unit 951-1, and the second rotation module Second situation capturing units 962 screwed and fixed to the bottom of the unit 952-1, and the third situation recording unit screwed and fixed to the bottom of the third rotation module unit 953-1 ( 963), and is screwed and fixed to the connection fixing module unit 91, and is electrically connected to and controlled by the elevation guide 94 and the rotation guide 95, , the control unit 97 receiving the photographing information of the first situation photographing units 961, the second situation photographing units 962, and the third situation photographing units 963, and the third panel transfer module 933 is screwed into and fixed to the controller 97, and transmits the photographing information of the first situation photographing units 961, second situation photographing units 962, and third situation photographing units 963 transmitted from the control unit 97. It consists of a receiver 98 and a status guide speaker 99 that is screwed and fixed to the third panel transfer module 933 and receives a signal from the control unit 97 to guide a voice or generate an alarm.

The connection fixing module unit 91 has a panel structure made of a metal material and is disposed on the ground.

The first panel transfer module 931, the second panel transfer module 932, and the third panel transfer module 933 are formed of metal or synthetic resin panels, and are inserted through the guide shaft 92. A transfer hole is formed.

The first lift guide unit 941, the second lift guide unit 942, and the third lift guide unit 943 are cylinders, and the first rotation guide unit 951 and the second rotation guide unit ( 952) and the third rotation guide unit 953 are motors, and the first situation capturing units 961, the second situation capturing units 962, and the third situation capturing unit 963 are cameras.

In addition, the first rotation module unit 951-1, the second rotation module unit 952-1, and the third rotation module unit 953-1 are formed in a circular or square panel structure.

The first situation photographing units 961, the second situation photographing units 962, and the third situation photographing unit 963 include the first elevation guidance unit 941 and the second elevation guidance unit 942. ) and the driving of the third lift guide unit 943, the height can be changed, and it is possible to photograph the ground or field conditions or risk factors on the ground.

The control unit 97 receives the signal received by the transmission/reception unit 98 through the manager terminal and controls the status guide speaker 99 to transmit voice or generate an alarm.

That is, after recognizing a dangerous situation of a phenomenon through the photographing information, a danger signal is transmitted through the status guide speaker 99 to prevent safety accidents in the field.

In addition, the control unit 97 controls driving of the lift guide unit 94 and the rotation guide unit 95 by receiving a signal received by the transmitter and receiver unit 98 through the manager terminal, Positions of the situation capturing units 961, the second situation capturing units 962, and the third situation capturing unit 963 can be changed.

Although the present invention has been described in detail so far, it is clear that the embodiments mentioned in the process are only illustrative and not limiting, and the present invention is the technical spirit or field of the present invention provided by the claims below. Within the range that does not deviate from, it will be said that component changes to the extent that can be equally coped with fall within the scope of the present invention.

10: grounding system 20: grounding terminal
30: grounding terminal 40: grounding cable
50: ground cable guide means 51: connection bracket
52: support shaft 53: fixed frame member
60: support frame member 70: support bar
80: pressurized elastic support fixing means 81: operating groove
82: elastic pressure coil spring 83: pressure panel
84: elastic pressure support panel 85: inlet groove
90: continuous detection operation guidance means 91: connection fixing module unit
92: guide shaft 93: transfer module unit
931: first panel transfer module 932: second panel transfer module
933: third panel transfer module 94: lift guide
941: first lift guide unit 942: second lift guide unit
943: third lift guide unit 95: rotation guide unit
951: first rotation guide unit 951-1: first rotation module unit
952: second rotation guide unit 952-1: second rotation module unit
953: 3rd rotation guide unit 953-1: 3rd rotation module unit
96: situation shooting unit 961: first situation shooting unit
962: second situation recording unit 963: third situation recording unit
97: control unit 98: transmission and reception unit
99: status information speaker 100: transformer

Claims (2)

delete As a grounding system for grounding a transformer installed in an object,
a ground terminal provided in the transformer;
a ground terminal formed on the transformer; and
It consists of a ground cable having one end connected to the ground terminal and the other end connected to the ground terminal,
The transformer is further provided with a ground cable guide means to support the ground terminal and the ground cable connecting the ground terminal,
The ground cable guide means,
A connection bracket fastened to and fixed to the transformer;
A support shaft having one end fastened to and fixed to the connecting bracket fastened to the transformer;
A fixing frame member fastened to and fixed to the other end of the support shaft coupled to the connecting bracket;
A support frame member fitted and fixed to the inside of the fixing frame member and through which the ground cable is inserted;
The distribution line grounding system associated with the transformer, characterized in that one end is fastened and fixed to the connection bracket, and the other end is made of support bars supporting the side surface of the fixing frame member.

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