KR20230093588A - System and method for temperature-rise test automation - Google Patents

Abstract

The present invention relates to a system and method for automating a temperature rise test of a transformer. The system according to an embodiment of the present invention provides a power supply process in which three-phase power is supplied to the primary terminals of the transformer in a short-circuit state of the secondary terminals of the transformer, and the power supply to each primary terminal is cut off. As a system for performing a transformer temperature rise test including a resistance measurement process of measuring winding resistance of the transformer in the state, a primary contactor and a secondary contactor are closed or a plurality of first disconnectors that are open and disposed adjacent to the primary terminal side of the transformer; a plurality of second disconnectors disposed adjacent to the secondary terminal side of the transformer and connecting (closed or opened) between the primary contactor and the secondary contactor according to the driving of the second motor; a plurality of third disconnectors, which are closed or opened between the primary and secondary contactors according to the driving of the third motor and disposed adjacent to the secondary terminal of the transformer; and a main control unit for controlling the first to third disconnectors to be closed or opened by controlling the first to third motors in the process of supplying power and measuring the resistance according to a user's input. include

Description

Transformer temperature rise test automation system and method {SYSTEM AND METHOD FOR TEMPERATURE-RISE TEST AUTOMATION}

The present invention relates to a system and method for a temperature rise test of a transformer, and more particularly, to a system and method capable of realizing automation for a temperature rise test of a transformer that predicts the transformer temperature based on measurement of winding resistance of the transformer, and It's about how.

A transformer is a device that converts and outputs the voltage or current of an input power. In order to determine the characteristics of such a transformer, various tests on the transformer (hereinafter, referred to as “transformer tests”) may be performed.

Among these transformer tests, there is a typical temperature rise test. The temperature rise test is a test to verify whether the temperature rise of windings and insulators (oil, etc.) is within the specified limits under the rated operating conditions of the transformer. To this end, the winding resistance of the transformer must be measured under specific conditions. At this time, based on the measured winding resistance, the transformer temperature (that is, the temperature of the winding and insulator) may be predicted.

Specifically, the temperature rise test requires a process of supplying power to a transformer under a specific condition and then measuring a winding resistance of the transformer under another specific condition. At this time, in order to perform these processes, various switching, such as power supply-related switching and winding resistance measurement-related switching, must be appropriately performed on the primary and secondary sides of the transformer (switching conditions). At the same time, the winding resistance of the transformer must be measured within a very short time in the state in which the corresponding switching is performed (time condition).

Accordingly, in the conventional case, when performing a temperature rise test on a (ultra)high voltage transformer used in a transmission and distribution power system, etc., the above-described switching conditions and time conditions must be satisfied for a transformer occupying a large volume, so a number of Workers had to be mobilized. For example, after cutting off the power supplied to the primary of the transformer, switching conditions such as connecting the wires between the primary and secondary sides of the transformer and the winding resistance meter to measure the winding resistance must be performed within a short time. Due to this, the operator's moving distance for performing the switching condition increases, so that one or two operators cannot measure the winding resistance within the corresponding time.

However, it will be said that the above information can only be used as a reference for understanding the present invention, and does not correspond to the contents of known technology.

On the other hand, there is a prior art (KR 10-2194779 B) for testing various transformers. However, in the case of this prior art, since it is aimed at a low voltage transformer, it has parts and structures unsuitable for (ultra)high voltage, and it is impossible to perform the above-described switching conditions and time conditions. Accordingly, the prior art is difficult to apply to (ultra)high voltage transformers, and cannot be used particularly for temperature rise tests.

KR 10-2194779 B

In order to solve the problems of the prior art as described above, an object of the present invention is to provide a technique capable of implementing automation for a temperature rise test of a transformer.

In addition, an object of the present invention is to provide a technology for automating a temperature rise test of a transformer that can be applied to (ultra)high voltage transformers while satisfying switching conditions and time conditions.

However, the problem to be solved by the present invention is not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

A system according to an embodiment of the present invention for solving the above problems is a power supply process in which three-phase power is supplied to the primary terminals of the transformer in a short-circuit state of the secondary terminals of the transformer, and each of the 1 A system for performing a temperature rise test of a transformer each including a resistance measurement process of measuring winding resistance of the transformer in a state in which the power supply to the secondary terminal is cut off, wherein the primary contactor and the secondary contactor are operated according to the driving of the first motor a plurality of first disconnectors which are connected (closed or open) between and disposed adjacent to the primary terminal side of the transformer; a plurality of second disconnectors disposed adjacent to the secondary terminal side of the transformer and connecting (closed or opened) between the primary contactor and the secondary contactor according to the driving of the second motor; a plurality of third disconnectors, which are closed or opened between the primary and secondary contactors according to the driving of the third motor and disposed adjacent to the secondary terminal of the transformer; and a main control unit for controlling the first to third disconnectors to be closed or opened by controlling the first to third motors in the process of supplying power and measuring the resistance according to a user's input. include

For the measurement of the winding resistance, at least one of the plurality of first disconnectors is connected between the primary terminal of the transformer and the winding resistance meter, and at least one of the plurality of third disconnectors is connected to the secondary terminal of the transformer. It can be connected between winding resistance meters.

To implement a short circuit state of the secondary terminals of the transformer, the plurality of second disconnectors may be connected to the secondary terminals of the transformer.

The plurality of second disconnectors may implement a plurality of arrangement structures in which the 2-1 disconnectors and the 2-2 disconnectors are connected to the first bus bar.

In the plurality of array structures, the primary contactors of the 2-1 disconnectors are connected to the second bus bar, and the secondary contactors of the 2-1 disconnectors or the primary contactors of the 2-2 disconnectors are connected to the third bus bar. And the secondary contactors of the 2-2 disconnectors can be connected to the 4th bus bar.

Secondary terminals of the three phases of the transformer may be connected to the second to fourth busbars, respectively.

When the secondary terminals of the transformer are in a short-circuit state, the number of the array structures short-circuiting may vary according to the magnitude of the output current of the secondary terminals of the transformer.

Primary contactors of the plurality of first disconnectors are connected to primary terminals of the transformer, at least one secondary contactor of the plurality of first disconnectors is connected to a winding resistance meter, and At least one secondary contactor may be connected to the secondary contactor of the 3-1 disconnector among the plurality of third disconnectors through a jumper line.

The primary contactor of the 3-1 disconnector is connected to the secondary terminal of the transformer, and at least one of the plurality of third disconnectors except for the 3-1 disconnector is a winding resistance meter. And may be connected to the secondary terminal of the transformer, respectively.

The windings of the primary side of the transformer may have a Y-connection structure, and the windings of the secondary side of the transformer may have a delta connection structure.

In the process of supplying power, three-phase power may be supplied to primary terminals of the first to third phases of the transformer, respectively.

In the plurality of first disconnectors, the primary contactors of the 1-1 disconnectors are connected to the primary terminals of the second phase of the transformer, and the primary contactors of the 1-2 disconnectors and the 1-3 disconnectors are connected to the primary contactors of the transformer. It is connected to the primary terminal of the neutral point, the secondary contactor of the 1-1 disconnector is connected to the 1st power terminal and the 1st high voltage measurement terminal of the winding resistance meter, respectively, and the secondary contactor of the 1-2 disconnector is the winding resistance It is connected to the second high voltage measurement terminal of the measuring device, and the secondary contactor of the disconnector 1-3 can be connected to the secondary contactor of the disconnector 3-1 through a jumper line.

In the plurality of third disconnectors, the primary contactors of the 3-1 disconnector and the 3-3 disconnector are connected to the secondary terminal of the second phase of the transformer, and the primary contactor of the 3-2 disconnector is the transformer. It is connected to the secondary terminal of phase 3, the secondary contactor of the 3-2 disconnector is connected to the 2nd power terminal and the 1st low voltage measurement terminal of the winding resistance meter, respectively, and the secondary contactor of the 3-3 disconnector is connected to the winding It may be connected to the second low voltage measuring terminal of the resistance meter.

The system according to an embodiment of the present invention monitors the abnormal current state of the power supplied to the transformer in the power supply process based on the current value of the current transformer (CT) connected to each primary terminal of the transformer, Based on a sensor value of a temperature sensor installed in the transformer, a monitoring facility for monitoring an abnormal temperature state of the transformer during the power supply process may be further included.

The monitoring facility may transmit an alarm signal to a power control unit that controls supply of the power when the abnormal current state or the abnormal temperature state occurs.

A system according to an embodiment of the present invention includes a first support for supporting the plurality of first disconnectors; and a second supporter supporting the plurality of second and third disconnectors.

The first and second supports may be implemented to be movable.

At least one of the first and second supports may be implemented to be capable of height adjustment and horizontal movement adjustment through a remote controller.

A system according to an embodiment of the present invention includes a first driving unit connected to the main control unit and installed on the first support to drive a first motor according to a control signal of the main control unit; a second driving unit connected to the main controller and installed on the second support to drive the second motor according to a control signal from the main controller; and a third driving unit connected to the main controller and installed on the second support to drive the third motor according to a control signal from the main controller.

The system according to an embodiment of the present invention is connected to the main control unit, receives the user's input and transfers it to the main control unit, and the first to third driving units deliver the received input to the main control unit. A display panel for receiving and displaying signals about the connection or disconnection state of the three disconnectors from the main control unit may be further included.

In the process of supplying power, the plurality of first disconnectors and the plurality of third disconnectors are cut off (open) to release the connection for measuring the winding resistance, and at least a part of the plurality of second disconnectors is closed. ), the secondary terminals of the transformer may be short-circuited.

In the resistance measurement process, the plurality of first disconnectors and the plurality of third disconnectors are closed to implement a connection for measuring the winding resistance, and the plurality of second disconnectors are opened to Secondary terminals of the transformer may be released from the short-circuit state.

A system according to another embodiment of the present invention includes a power supply process of supplying three-phase power to the primary terminals of the transformer in a short-circuit state of the secondary terminals of the transformer, and supplying power to each of the primary terminals. A system for performing a transformer temperature rise test each including a resistance measurement process of measuring the winding resistance of the transformer in a cut-off state, which is cut off (open) in the power supply process according to the driving of the first motor and the resistance measurement a first measuring device including a plurality of first disconnectors that are closed in the process and a first supporter supporting each of the first disconnectors, and disposed adjacent to the primary terminal side of the transformer; A plurality of second disconnectors, at least some of which are closed in the power supply process according to the driving of the second motor and all of them are open in the resistance measurement process, and the power supply process according to the driving of the third motor A plurality of third disconnectors that are opened in and closed during the resistance measurement process, and second supports supporting the second and third disconnectors, respectively, adjacent to the secondary terminal side of the transformer. a second measurement facility disposed thereon; and a main controller configured to control connection or disconnection of the first to third disconnectors by controlling the first to third motors in the process of supplying power and measuring the resistance according to a user's input.

A method according to an embodiment of the present invention includes a plurality of disconnectors that are connected (closed or opened) according to the driving of a motor, and a plurality of disconnectors that are connected (closed) or disconnected by controlling the motor according to a user's input. A temperature rise test method of a transformer performed using a system including a main control unit that controls opening, wherein three-phase power is supplied to the primary terminals of the transformer in a short-circuit state of the secondary terminals of the transformer, respectively. a power supply step; and a resistance measurement step of measuring winding resistance of the transformer in a state in which power supply to each of the primary terminals is cut off.

In the step of supplying power, the plurality of first disconnectors disposed adjacent to the primary terminal side of the transformer and the plurality of third disconnectors disposed adjacent to the secondary terminal side of the transformer are opened to measure the winding resistance. The connection for the transformer is released, and at least a part of the plurality of second disconnectors disposed adjacent to the secondary terminal side of the transformer is closed so that the secondary terminals of the transformer are in a short-circuit state.

In the resistance measuring step, the plurality of first disconnectors and the plurality of third disconnectors are closed to implement a connection for measuring the winding resistance, and the plurality of second disconnectors are opened to form the transformer. The secondary terminals of may include releasing the short circuit state.

The present invention configured as described above has an advantage in that it can be applied to (ultra)high voltage transformers while satisfying switching conditions and time conditions, as well as implementing automation technology for temperature rise tests of transformers.

That is, the present invention has the advantage of being able to quickly, accurately and safely perform switching of various connections between the transformer and the winding resistance meter required in the process of supplying power and measuring resistance during the temperature rise test of the transformer quickly, accurately and safely with a minimum number of personnel.

The effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below. will be.

1 shows a block diagram of a system 10 according to one embodiment of the present invention.
Figure 2 shows an example of the appearance of the transformer (100).
3 shows an example of a circuit diagram of internal wiring of the transformer 100.
4 shows one side of the first measurement facility 1000 .
FIG. 5 is another side of the first measurement facility 1000, and shows a view in which the first measurement facility 1000 of FIG. 4 is rotated by 90° on a plane.
6 shows a perspective view of the area of the first disconnector 1100 in the first measuring installation 1000 .
FIG. 7 is a side view of a region of the first disconnector 1100 in the first measurement facility 1000, showing an opening and closing state of the first disconnector 1100. Referring to FIG.
8 shows a circuit diagram for opening and closing of the plurality of first disconnectors 1100a, 1100b, and 1100c.
9 shows one side of the second measurement facility 2000 .
FIG. 10 shows an enlarged view of the same side as that of FIG. 9 for the upper part of the second measurement facility 2000 .
11 shows another side of the top of the second measurement facility 2000 rotated by 90° with respect to FIG. 10 on a plane with respect to the top of the second measurement facility 2000 .
FIG. 12 shows another side of the top of the second measurement facility 2000, which is opposite to FIG. 11 .
13 shows a plan view of the upper part of the second measurement facility 2000 .
14 shows an enlarged view in the direction of FIG. 11 of the third disconnector 2300 of the second measuring installation 2000 .
15 to 17 show circuit diagrams for opening and closing of the plurality of second disconnectors 2100 and 2200 and the third disconnector 2300 .
18 shows a block configuration diagram of a sensing facility 3000 according to an embodiment of the present invention.
19 shows a winding resistance meter 4000 according to an embodiment of the present invention.
20 shows a block configuration diagram of a control facility 5000 according to an embodiment of the present invention.
21 shows a flow chart of a method according to one embodiment of the present invention.
22 shows an example of connection switching in the power supply step (S102).
23 shows an example of connection switching in the resistance measurement step (S103).

The above objects and means of the present invention and the effects thereof will become clearer through the following detailed description in conjunction with the accompanying drawings, and accordingly, those skilled in the art to which the present invention belongs can easily understand the technical idea of the present invention. will be able to carry out. In addition, in describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

Terms used in this specification are for describing the embodiments and are not intended to limit the present invention. In this specification, singular forms also include plural forms in some cases unless otherwise specified in the text. In this specification, terms such as "comprise", "have", "provide" or "have" do not exclude the presence or addition of one or more other elements other than the mentioned elements.

In this specification, terms such as “or” and “at least one” may represent one of the words listed together, or a combination of two or more. For example, "or B" and "at least one of B" may include only one of A or B, or may include both A and B.

In this specification, descriptions following "for example" may not exactly match the information presented, such as cited characteristics, variables, or values, and tolerances, measurement errors, limits of measurement accuracy and other commonly known factors It should not be limited to the embodiments of the present invention according to various embodiments of the present invention with effects such as modifications including.

In this specification, when a component is described as being 'connected' or 'connected' to another component, it may be directly connected or connected to the other component, but there may be other components in the middle. It should be understood that it may be On the other hand, when a component is referred to as 'directly connected' or 'directly connected' to another component, it should be understood that no other component exists in the middle.

In the present specification, when an element is described as being 'on' or 'in contact with' another element, it may be in direct contact with or connected to the other element, but another element may be present in the middle. It should be understood that On the other hand, if an element is described as being 'directly on' or 'directly in contact with' another element, it may be understood that another element in the middle does not exist. Other expressions describing the relationship between components, such as 'between' and 'directly between', can be interpreted similarly.

In this specification, terms such as 'first' and 'second' may be used to describe various elements, but the elements should not be limited by the above terms. In addition, the above terms should not be interpreted as limiting the order of each component, and may be used for the purpose of distinguishing one component from another. For example, a 'first element' may be named a 'second element', and similarly, a 'second element' may also be named a 'first element'.

Unless otherwise defined, all terms used in this specification may be used in a meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless explicitly specifically defined.

Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

1 shows a block diagram of a system 10 according to one embodiment of the present invention.

System 10 according to an embodiment of the present invention is a system applied for a temperature rise test of a transformer 100, and as shown in FIG. 1, a first measurement facility 1000 and a second measurement facility 2000 ), a monitoring facility 3000, a winding resistance meter 4000, and a control facility 5000.

FIG. 2 shows an example of the appearance of the transformer 100, and FIG. 3 shows an example of a circuit diagram of internal wiring of the transformer 100.

The transformer 100 is a device that converts and outputs the voltage or current of input power. That is, the transformer 100 may convert high-voltage power input to the primary side and output low-voltage power to the secondary side.

For example, the transformer 100 may be a transformer that converts (ultra)high voltage power or may be a transformer that converts three-phase power. At this time, the output power of the secondary side is power having a lower voltage level than the input power of the primary side, but when the transformer 100 is a (ultra) high voltage transformer, the output power of the secondary side is still (ultra) high voltage power. may correspond to

2 and 3, the transformer 100 may include a plurality of primary terminals 101 to which three-phase high voltage power is input to the primary side, and converted three-phase low voltage power is output to the secondary side. It may include multiple secondary terminals 102 .

The primary side and the secondary side of the transformer 100 each include a plurality of windings (L), and these windings on the primary side and the secondary side can be connected to each other in various forms such as Y connection or delta connection. can For example, the primary windings (L ₁₁ , L ₁₂ , L ₁₃ ) are connected in a wye connection, and the secondary windings (L ₂₁ , L ₂₂ , L ₂₃ ) are connected in a delta connection (hereinafter referred to as “first connection”). It may be referred to as "method"), but is not limited thereto. That is, in addition to the first wiring method, the primary windings (L ₁₁ , L ₁₂ , L ₁₃ ) are connected in a delta connection, and the secondary windings (L ₂₁ , L ₂₂ , L ₂₃ ) are connected in a delta connection (hereinafter, referred to as the “second wiring method”), or the primary side windings (L ₁₁ , L ₁₂ , L ₁₃ ) are connected in delta connection and the secondary side windings (L ₂₁ , L ₂₂ , L ₂₃ ) are connected in wye connection (Hereinafter referred to as “third wiring method”).

However, in the case of the (ultra)high voltage transformer 100, as shown in FIG. 3, since it is typical to be connected in the first wiring method, the present invention will be described below with a focus on the first wiring method. The present invention is not limited thereto.

Referring to FIG. 3, as implemented in the first wiring method, the transformer 100 includes primary terminals 101a, 101b, and 101c receiving three-phase high-voltage power on the primary side, and a winding L ₁₁ on the primary side. It includes a primary terminal 101d connected to the neutral point of L ₁₂ and L ₁₃ , and includes secondary terminals 102a, 102b, and 102c that output converted 3-phase low voltage power to the secondary side.

That is, since the 1-1, 1-2 and 1-3 windings (L ₁₁ , L ₁₂ , L ₁₃ ) included in the primary side of the transformer 100 are connected in a wye connection, each other end is 1 of the neutral point It is connected to the secondary terminal 101d. In addition, one end of the 1-1 winding (L ₁₁ ) is connected to the primary terminal (101a) of the first phase and one end of the 1-2 winding (L ₁₂ ) is connected to the primary terminal (101c) of the second phase, One end of the 1-3 winding (L ₁₃ ) is connected to the primary terminal (101d) of the third phase.

On the other hand, since the 2-1, 2-2 and 2-3 windings (L ₂₁ , L ₂₂ , L ₂₃ ) included in the secondary side of the transformer 100 are connected in a delta connection, these windings (L ₂₁ , L ₂₂ and L ₂₃ ) have one end and the other end connected to each other. That is, the other end of the 2-1 winding (L ₂₁ ) and one end of the 2-2 winding (L ₂₂ ) are connected, and the other end of the 2-2 winding (L ₂₂ ) and the 2-3 winding (L ₂₃ ) One end of is connected, and the other end of the 2-3 winding (L ₂₃ ) and one end of the 2-1 winding (L ₂₁ ) are connected. At this time, the secondary terminals 102a, 102b, and 102c of the first to third phases are respectively connected to one end of the 2-1, 2-2, and 2-3 windings (L ₂₁ , L ₂₂ , L ₂₃ ). Connected. That is, the secondary terminal 102a of the first phase is connected to one end of the 2-1 winding (L ₂₁ ), and the secondary terminal 102b of the second phase is connected to one end of the 2-2 winding (L ₂₂ ). And, the secondary terminal 102c of the third phase is connected to one end of the 2-3 winding (L ₂₃ ).

Meanwhile, in order to perform a temperature rise test of the transformer 100, a power supply process and a resistance measurement process must be performed. At this time, the power supply process refers to a process in which three-phase power is supplied to the primary terminals 101 of the transformer 100 in a short-circuit state of the secondary terminals 102 of the transformer 100, respectively. In addition, the resistance measurement process refers to a process of measuring winding resistance of the transformer 100 in a state in which power supply to each primary terminal 101 of the transformer 100 is cut off. That is, the present system 10 is a system for performing a temperature rise test, and may be a system for performing such a power supply process and a resistance measurement process.

4 shows one side of the first measurement facility 1000, and FIG. 5 is another side view of the first measurement facility 1000, in which the first measurement facility 1000 of FIG. 4 is rotated by 90° on a plane. indicates

First, the first measurement facility 1000 is on the primary terminal 101 side of the transformer 100 to support switching for the connection of the primary terminal 101 of the transformer 100 required in the process of supplying power and measuring resistance. It is a facility placed adjacent to. As shown in FIGS. 4 and 5 , the first measurement facility 1000 includes a first disconnecting switch 1100, a first motor 1200, a first driving unit 1300, and a first support ( 1400) may be included.

6 shows a perspective view of the area of the first disconnector 1100 in the first measurement facility 1000, and FIG. 7 is a side view of the area of the first disconnector 1100 in the first measurement facility 1000, The opening and closing state of the first disconnector 1100 is shown. 8 shows a circuit diagram for opening and closing of the plurality of first disconnectors 1100a, 1100b, and 1100c.

The first disconnector 1100 is a device that opens and closes a circuit in a no-load state, and is provided in plurality. In particular, the first disconnector 1100 performs switching of the connection between the primary terminal 101 of the transformer 100 and the winding resistance meter 4000 in the process of supplying power and measuring resistance according to whether the first disconnector 1100 is opened or closed, and the transformer 100 It is possible to support switching for the connection between the primary terminal 101 and the secondary terminal 102 of ).

4 to 7, one first disconnector 1100 can move (or rotate) with a primary contactor 1101 as a contact terminal and a secondary contactor 1102 as another contact terminal, and the movement A contact movable part 1103 that opens and closes between the primary contactor 1101 and the secondary contactor 1102 according to (or rotation), and a support part 1104 connected to the contact movable part 1103 to support the contact movable part 1103 can include

At this time, the primary and secondary contactors 1101 and 1102 may each include a conductive part through which electricity can flow and an insulator that surrounds and insulates the conductive part. One end of the conductive parts of the primary and secondary contactors 1101 and 1102 is exposed from the insulator, and the contact movable part 1103 is the exposed conductive part of the primary contactor 1102 and the exposed conductive part of the secondary contactor 1102. You can open and close between them.

For example, when the first motor 1200 is driven, the support part 1104 moves according to the rotational motion of the first motor 1200, and the contact movable part connected to the support part 1104 according to the movement of the support part 1104 1103 will move (or rotate). As a result, according to the movement (or rotation) of the contact movable part 1103, the primary contactor 1101 and the secondary contactor 1102 can be connected (closed) or blocked (open). That is, when the first motor 1200 rotates in one direction, the contact movable part 1103 moves (or rotates) in the first direction so that the primary contactor 1101 and the secondary contactor 1102 of the first disconnector 1100 Between can be blocked (open). Conversely, when the first motor 1200 rotates in the other direction, the contact movable part 1103 moves (or rotates) in the second direction so that the primary contactor 1101 and the secondary contactor 1102 of the first disconnector 1100 ) may be closed.

The first drive unit 1300 is a component that communicates with the control facility 5000 to drive the first motor 1200 . That is, the first driving unit 1300 transfers driving current to the first motor 1200 according to the control signal received from the control facility 5000 .

For example, when a first control signal for opening of the first disconnector 1100 is received from the control facility 5000, the first drive unit 1300 drives the first motor 1200 to rotate in one direction. By applying current to the first motor 1200, it is possible to open a gap between the primary contactor 1101 and the secondary contactor 1102 of the first disconnector 1100. In addition, when the second control signal for the closed connection of the first disconnector 1100 is received from the control facility 5000, the first drive unit 1300 is configured to rotate the first motor 1200 in the other direction. By applying a driving current to the first motor 1200 , the primary contactor 1101 and the secondary contactor 1102 of the first disconnector 1100 may be closed.

In addition, the first drive unit 1300 may detect the current state of the first disconnector 1100, that is, the closed or open state, and transmit a signal for this to the control facility 5000. For example, the first driving unit 1300 determines the current state of the first disconnector 1100 through a separate sensor that detects whether the first disconnector 1100 is opened or closed, or the first motor 1200 is recently or currently driven. Based on the state, the current state of the first disconnector 1100 may be grasped. In particular, the first driver 1300 may drive the first motor 1200 according to the first and second control signals, and then transmit a resultant signal to the control facility 5000 .

Meanwhile, a plurality of first disconnectors 1100 are provided to correspond to the number of power input to the transformer 100 or to correspond to the number of primary terminals 101 of the transformer 100 . For example, since three-phase power is input to the transformer 100, a 1-1 disconnector 1100a, a 1-2 disconnector 1100b, and a 1-3 disconnector 1100c may be provided. All of the plurality of first disconnectors 1100a, 1100b, and 1100c may be opened and closed in the same state according to driving of the first motor 1200. That is, when the first motor 1200 is driven according to the first control signal, as shown in FIG. can In addition, when the first motor 1200 is driven according to the second control signal, as shown in FIG. can

The first support 1400 serves as a support for other components of the first measurement facility 1000 . That is, the first disconnector 1100, the first motor 1200, and the first drive unit 1300 are disposed on the first support 1400, and the first support 1400 supports them, respectively. In particular, the first disconnector 1100 is positioned above the first support 1400 to correspond to the height of the primary terminal 101 of the transformer 100. That is, while supporting the first disconnector 1100, the first supporter 1400 enables the first disconnector 1100 to be disposed adjacent to the primary terminal 101 of the transformer 100 located on a certain height. . For example, since the (ultra) high voltage transformer 100 is manufactured in a large size, it is common for the primary terminal 101 to be located at a considerable height of 3 m or more. Accordingly, the first support 1400 is a first disconnector ( 1100) can be arranged adjacently corresponding to the corresponding height.

The first support 1400 may be implemented in a movable type for convenience of movement. To this end, the first measurement facility 1000 may further include a moving unit 1500 for moving the first support 1400 . For example, the moving unit 1500 includes wheels disposed under the first support 1400, and may further include a moving motor that provides power for moving the corresponding wheels. In addition, a remote controller may be additionally provided for controlling the movement of the moving motor or the horizontal movement of the wheel (eg, east-west, north-south movement control).

In addition, the first support 1400 may have a fixed shape having a fixed height or a variable shape capable of adjusting its height. If the first support 1400 has a variable shape, the horizontal movement of the first support 1400 may be adjusted according to the user's manipulation of the remote controller, and the height thereof may also be adjusted by a hydraulic motor or the like. In addition, the second measurement facility 2000 may be equipped with a lift out trigger (not shown) to prevent the facility from tipping over.

FIG. 9 shows one side of the second measurement facility 2000, and FIG. 10 shows an enlarged view of the same side as FIG. 9 for the upper portion of the second measurement facility 2000. 11 shows another side of the top of the second measurement facility 2000 rotated by 90° with respect to FIG. 10 on a plane with respect to the top of the second measurement facility 2000, and FIG. Another side of the upper part of the second measurement facility 2000 is shown. In addition, FIG. 13 shows a plan view of the upper part of the second measurement facility 2000, and FIG. 14 shows an enlarged view of the third disconnector 2300 of the second measurement facility 2000 in the direction of FIG. 11 .

Next, the second measurement facility 2000 connects the secondary terminal 102 of the transformer 100 to support switching of the connection of the secondary terminal 102 of the transformer 100 required in the process of supplying power and measuring resistance. It is a facility placed adjacent to the side. As shown in Figs. , a third motor 2500c, second driving units 2600a and 2600b, a third driving unit 2600c, and a second supporter 2700.

At this time, the second disconnectors 2100 and 2200 may include the 2-1 disconnector 2100 and the 2-2 disconnector 2200, and the second motors 2500a and 2500b may include the 2-1 motor 2500a. ) and a 2-2 motor 2500a, and the second driving units 2600a and 2600b may include a 2-1 driving unit 2600a and a 2-2 driving unit 2600b.

The 2-1 disconnector 2100, the 2-2 disconnector 2200, and the 3rd disconnector 2300 are devices that open and close a circuit in a no-load state, and are provided in plurality. In particular, the 2-1 disconnector 2100, the 2-2 disconnector 2200, and the 3rd disconnector 2300 are connected to the secondary terminal 101 of the transformer 100 during the process of supplying power and measuring resistance according to whether they are opened or closed. ) can support switching for the connection related to the side.

That is, the 2-1 disconnector 2100 and the 2-2 disconnector 2200 determine whether the secondary terminal 101 of the transformer 100 is short-circuited in the process of supplying power and measuring resistance according to whether they are opened or closed. switching can be supported. In addition, the third disconnector 2300 performs switching of the connection between the secondary terminal 102 of the transformer 100 and the winding resistance meter 4000 in the process of supplying power and measuring resistance according to whether the third disconnector 2300 is opened or closed, and the transformer 100 It is possible to support switching for the connection between the secondary terminal 102 and the primary terminal 101 of ).

Meanwhile, the plurality of 2-1 disconnectors 2100a, 2100b, and 2100c and the plurality of 2-2 disconnectors 2200a, 2200b, and 2200c may be arranged to correspond (symmetrically) to each other.

Specifically, one 2-1 disconnector 2100 can move (or rotate) between a primary contactor 2101 as a contact terminal and a secondary contactor 2102 as another contact terminal, and the movement (or rotation) According to this, it may include a contact movable part 2103 that opens and closes between the primary contactor 2101 and the secondary contactor 2102, and a support part 2104 connected to the contact movable part 2103 to support the contact movable part 2103. there is.

In addition, one 2-2 disconnector 2200 is movable (or rotated) with the primary contactor 2201, which is a contact terminal, and the secondary contactor 2202, which is another contact terminal, and is dependent on the movement (or rotation). Accordingly, it may include a contact movable part 2203 that opens and closes between the primary contactor 2201 and the secondary contactor 2202, and a support part 2204 connected to the contact movable part 2203 to support the contact movable part 2203. .

In addition, one third disconnector 2300 can move (or rotate) with the primary contactor 2301, which is a contact terminal, and the secondary contactor 2302, which is another contact terminal, and according to the movement (or rotation), 1 It may include a contact movable part 2303 that opens and closes between the primary contactor 2301 and the secondary contactor 2302, and a support part 2304 connected to the contact movable part 2303 to support the contact movable part 2303.

At this time, the primary contactors 2101, 2201, and 2301 and the secondary contactors 2201, 2202, and 2302 of the 2-1 disconnector 2100, the 2-2 disconnector 2200, and the 3rd disconnector 2300 are electrically It may include a conductive part through which ? may flow, and an insulator that surrounds and insulates the conductive part. One end of each conductive part of the primary contactors 2101, 2201, 2302 and the secondary contactors 2102, 2202, 2302 is exposed from the insulator, and each contact movable part 2103, 2203, 2302 is exposed primary contactor 2101 , 2201, 2301) and each conductive part of the exposed secondary contactors 2102, 2202, 2302 can be opened and closed.

For example, when the 2-1 motor 2500a is driven, the support 2104 of the 2-1 disconnector 2100 moves according to the rotational motion of the 2-1 motor 2500a. ) moves (or rotates) the contact movable part 2103 of the 2-1 disconnector 2100 connected to the support part 2104. As a result, according to the movement (or rotation) of the contact movable part 2103 of the 2-1 disconnector 2100, the gap between the primary contactor 2101 and the secondary contactor 2102 of the 2-1 disconnector 2100 can be connected (closed) or blocked (open). That is, when the 2-1 motor 2500a rotates in one direction, the contact movable part 2103 of the 2-1 disconnector 2100 moves (or rotates) in the first direction to A gap between the primary contactor 2101 and the secondary contactor 2102 may be blocked (open). Conversely, when the 2-1 motor 2500a rotates in the other direction, the contact movable part 2103 of the 2-1 disconnector 2100 moves (or rotates) in the second direction, and the 2-1 disconnector 2100 The primary contactor 2101 and the secondary contactor 2102 of may be closed.

In addition, when the 2-2 motor 2500b is driven, the support 2204 of the 2-2 disconnector 2200 moves according to the rotational motion of the 2-2 motor 2500b. ) moves (or rotates) the contact movable part 2203 of the 2-2 disconnector 2200 connected to the support part 2204. As a result, according to the movement (or rotation) of the contact movable part 2203 of the 2-2 disconnector 2200, the gap between the primary contactor 2201 and the secondary contactor 2202 of the 2-2 disconnector 2200 can be connected (closed) or blocked (open). That is, when the 2-2 motor 2500b rotates in one direction, the contact movable part 2203 of the 2-2 disconnector 2200 moves (or rotates) in the first direction to A gap between the primary contactor 2201 and the secondary contactor 2202 may be blocked (open). Conversely, when the 2-2 motor 2500b rotates in the other direction, the contact movable part 2203 of the 2-2 disconnector 2200 moves (or rotates) in the second direction, and the 2-2 disconnector 2200 The primary contactor 2201 and the secondary contactor 2202 of may be closed.

In addition, when the third motor 2500c is driven, the support part 2304 of the third disconnector 2300 moves according to the rotational motion of the third motor 2500c, and the support part 2304 moves accordingly. The contact movable part 2303 of the third disconnector 2300 connected to 2304 moves (or rotates). As a result, according to the movement (or rotation) of the contact movable part 2303 of the third disconnector 2300, the primary contactor 2301 and the secondary contactor 2302 of the third disconnector 2300 are closed. ) or blocked (open). That is, when the third motor 2500c rotates in one direction, the contact movable part 2303 of the third disconnector 2300 moves (or rotates) in the first direction so that the primary contactor 2301 of the third disconnector 2300 and the secondary contactor 2302 may be blocked (open). Conversely, when the third motor 2500c rotates in the other direction, the contact movable part 2303 of the third disconnector 2300 moves (or rotates) in the second direction and the primary contactor 2301 of the third disconnector 2300 ) and the secondary contactor 2302 may be closed.

The 2-1 drive unit 2600a, 2-2 drive unit 2600b, and 3 drive unit 2600c communicate with the control facility 5000 to operate the 2-1, 2-2 and 3 motors 2500a and 2500b. , 2500c). That is, the 2-1 driving unit 2600a transfers driving current to the 2-1 motor 2500a according to the control signal received from the control facility 5000, and the 2-2 driving unit 2600b controls the facility ( 5000) transfers driving current to the 2-2 motor 2500b according to the control signal received. In addition, the third driving unit 2600c transfers driving current to the third motor 2500b according to a control signal received from the control facility 5000 .

For example, when the third control signal for the opening of the 2-1 disconnector 2100 is received from the control facility 5000, the 2-1 drive unit 2600a operates by the 2-1 motor 2500a. By applying a driving current for rotating in one direction to the 2-1 motor 2500a, the gap between the primary contactor 2101 and the secondary contactor 2102 of the 2-1 disconnector 2100 can be cut off (open). can When the fourth control signal for the closed of the 2-1 disconnector 2100 is received from the control facility 5000, the 2-1 drive unit 2600a moves the 2-1 motor 2500a in the other direction. The primary contactor 2101 and the secondary contactor 2102 of the 2-1 disconnector 2100 can be closed by applying a driving current to rotate to the 2-1 motor 2500a. there is.

In addition, when the fifth control signal for the opening of the 2-2 disconnector 2200 is received from the control facility 5000, the 2-2 drive unit 2600b operates by the 2-2 motor 2500b. By applying a drive current for rotating in one direction to the 2-2 motor 2500b, the gap between the primary contactor 2201 and the secondary contactor 2202 of the 2-2 disconnector 2200 can be cut off (open). can When the sixth control signal for the closed of the 2-2 disconnector 2200 is received from the control facility 5000, the 2-2 drive unit 2600b moves the 2-2 motor 2500b in the other direction. The primary contactor 2201 and the secondary contactor 2202 of the 2-2 disconnector 2200 can be closed by applying a driving current to rotate to the 2-2 motor 2500b. there is.

In addition, when the seventh control signal for opening of the third disconnector 2300 is received from the control facility 5000, the third drive unit 2600c drives the third motor 2500c to rotate in one direction. By applying current to the third motor 2500c, it is possible to open a gap between the primary contactor 2301 and the secondary contactor 2302 of the third disconnector 2300. When the eighth control signal for the closed of the third disconnector 2300 is received from the control facility 5000, the third driving unit 2600c generates a driving current for the third motor 2500c to rotate in the other direction. By applying to the third motor 2500c, the primary contactor 2301 and the secondary contactor 2302 of the third disconnector 2300 may be closed.

The 2-1, 2-2 and 3 driving units 2600a, 2600b and 2600c identify the current state of each disconnector 2100, 2200 and 2300, that is, the closed or open state, and determine the A signal may be transmitted to the control facility 5000. That is, the 2-1 drive unit 2600a can detect the current state of the 2-1 disconnector 2100 and transmit a signal for it to the control facility 5000, and the 2-2 drive unit 2600b can detect the current state of the 2-1 disconnector 2100. -2 The current state of the disconnector 2200 may be grasped and a corresponding signal may be transmitted to the control facility 5000. In addition, the third drive unit 2600c can determine the current state of the third disconnector 2300 and transmit a signal for this to the control facility 5000,

For example, the 2-1, 2-2 and 3 driving units 2600a, 2600b and 2600c each disconnectors 2100, 2200, 2600, 2100, 2200 and 2300 through a separate sensor that detects whether the disconnectors 2100, 2200 and 2300 are opened or closed. 2300) or the current state of each disconnector 2100, 2200, 2300 based on the recent or current driving state of each motor 2500a, 2500b, 2500c. In particular, the 2-1, 2-2 and 3 driving units 2600a, 2600b and 2600c respectively drive the motors 2500a, 2500b and 2500c according to the 3rd to 8th control signals, and then generate the results thereof. A signal may be transmitted to the control facility 5000.

Meanwhile, a plurality of 2-1 and 2-2 disconnectors 2100 and 2200 are provided to correspond to the number of secondary terminals 102 of the transformer 100 . That is, a plurality of 2-1 disconnectors 2100a, 2100b, and 2100c may be provided, and a plurality of 2-2 disconnectors 2200a, 2200b, and 2200c may be provided. At this time, the plurality of 2-1 disconnectors 2100a, 2100b, 2100c and the plurality of 2-2 disconnectors 2200a, 2200b, 2200c are electrically connected to each other through the busbars 2411, 2412, 2413, 2414, and 2415. can be connected

For example, referring to FIG. 13, one 2-1 disconnector 2100 and one 2-2 disconnector 2200 are electrically connected to each other through a first bus bar 2411 in one array structure (AC) can achieve That is, one 2-1 disconnector 2100a and one 2-2 disconnector 2200a can be electrically connected to each other through one first bus bar 2411a to form the first array structure AC1. there is. In addition, the other 2-1 disconnector 2100b and the other 2-2 disconnector 2200b are electrically connected to each other through the other first busbar 2411b to form the second array structure AC2. can achieve In addition, another 2-1 disconnector 2100c and another 2-2 disconnector 2200c are electrically connected to each other through another first bus bar 2411c to form a third arrangement structure. (AC3) can be achieved.

Also, each of the array structures AC1 , AC2 , and AC3 may be electrically connected to each other through the second to fourth busbars 2412 , 2413 , and 2414 . That is, in each of the array structures AC1, AC2, and AC3, the primary contactors 2101a, 2101b, and 2101c of the 2-1 disconnectors 2100a, 2100b, and 2100c connect to each other through the second bus bar 2412. The secondary contactors 2102a, 2102b, and 2102c of the 2-1 disconnectors 2100a, 2100b, and 2100c may be electrically connected to each other through the third bus bar 2413, and the second The secondary contactors 2202a, 2202b, and 2202c of the -2 disconnectors 2200a, 2200b, and 2200c may be connected to the fourth bus bar 2414. Additionally, the primary contactors 2201a, 2201b, and 2201c of the 2-2 disconnectors 2200a, 2200b, and 2200c may also be electrically connected to each other through the fifth bus bar 2415.

These busbars (2411, 2412, 2413, 2414, 2415) are the secondary terminal 102 according to the short circuit of the secondary terminal 102 of the transformer 100 when the transformer 100 is a (ultra) high voltage transformer. Corresponds to the connection configuration to respond to (ultra)high voltage output. That is, the ends 2412', 2413', 2414', and 2415' extending from the second to fifth busbars 2412, 2413, 2414, and 2415 are connected to the secondary terminals 102 of the transformer 100. It is a configuration that is electrically connected, and is a configuration for electrically connecting these second to fifth busbars 2412, 2413, 2414, and 2415.

In addition, in order to withstand (ultra)high pressure, the first to fifth busbars 2412, 2413, 2414, and 2415 are implemented in a structure in which multiple bars are connected rather than implemented as one bar, respectively. It may be desirable to be

However, the second to fifth busbars 2412, 2413, 2414, and 2415 are selectively provided corresponding to the number of secondary terminals 102 of the transformer 100 or secondary terminals 102 of the transformer 100 can optionally be connected to

For example, when three secondary terminals 102 of the transformer 100 are provided and output in three phases, the second to fourth busbars 2412, 2413, and 2414 are provided and each end 2412', 2413' , 2414'), the secondary terminals 102 are electrically connected one by one, or the second, fourth, and fifth busbars 2412, 2413, and 2415 are provided to each end 2412', 2414', and 2415 ') may be electrically connected to the secondary terminals 102 one by one. Of course, in this case, the second to fifth busbars 2412, 2413, 2414, and 2415 are all provided, but the respective ends 2412', 2413', 2414'), the secondary terminals 102 are electrically connected to each other, or to respective ends 2412', 2414', and 2415' of the second, fourth, and fifth busbars 2412, 2413, and 2415. Secondary terminals 102 may be electrically connected one by one.

However, in the following, for convenience of description, respective ends 2412', 2413', and 2414 of the second to fourth busbars 2412, 2413, and 2414 with respect to the three secondary terminals 102 of the transformer 100 Assuming that the secondary terminals 102 are electrically connected to ') one by one, a circuit diagram will be shown and described, but the present invention is not limited thereto.

15 to 17 show circuit diagrams for opening and closing of the plurality of second disconnectors 2100 and 2200 and the third disconnector 2300 .

On the other hand, in the process of supplying power, the secondary terminals 101 of the transformer 100 should be connected to each other in a short-circuit state, for which the 2-1 and 2-2 motors ( 2500a and 2500b) may be driven so that the 2-1 and 2-2 disconnectors 2100 and 2200 of each array structure AC1 , AC2 and AC3 may be closed. Conversely, in the resistance measurement process, the secondary terminals 101 of the transformer 100 should be in a cut-off state in which the connection between them is released. The 2-1 and 2-2 disconnectors 2100 and 2200 of the array structures AC1 , AC2 , and AC3 may be opened by driving the two motors 2500a and 2500b.

In particular, in the present invention, the secondary terminals 102 of the transformer 100 are electrically connected to each other via respective ends 2412', 2413', and 2414' of the second to fourth busbars 2412, 2413, and 2414, respectively. As it is implemented in a connected manner, the plurality of array structures AC1 , AC2 , and AC3 may be selectively provided according to the size of the output current of the secondary terminals of the transformer 100 . That is, in the process of supplying power, when the secondary terminals 101 of the transformer 100 are in a short-circuit state, the plurality of array structures AC1, AC2, and AC3 short-circuiting according to the size of the output current of the secondary terminals of the transformer 100 ) can be selected.

For example, when a relatively low voltage is output from the transformer 100 when the secondary terminals 101 of the transformer 100 are short-circuited during power supply, as shown in FIG. 15, the first arrangement structure AC1 can only be provided. On the other hand, when a higher voltage is output from the transformer 100 when the secondary terminals 101 of the transformer 100 are short-circuited in the power supply process, as shown in FIG. 16, the first and second arrangement structures (AC1, AC2) may be provided. In addition, when a higher voltage is output from the transformer 100 when the secondary terminals 101 of the transformer 100 are short-circuited in the power supply process, as shown in FIG. 17, the first to third arrangements Structures AC1 , AC2 , and AC3 may be provided. That is, as the number of array structures provided increases, a higher voltage power source can be withstood according to a more complicated connection structure between corresponding array structures.

Each of the disconnectors 2100 and 2200 in all of these array structures can be opened and closed in the same state according to the driving of the 2-1st and 2-2nd motors 2500a and 2500b. That is, when the 2-1 and 2-2 motors 2500a and 2500b are driven according to the third and fifth control signals, FIGS. 15(a), 16(a) and 17(a) As shown, the plurality of 2-1 and 2-2 disconnectors 2100 and 2200 may be opened. In addition, when the 2-1 and 2-2 motors 2500a and 2500b are driven according to the fourth and sixth control signals, FIGS. 15(b), 16(b) and 17(b) As shown, the plurality of 2-1 and 2-2 disconnectors 2100 and 2200 may be connected (closed), respectively.

Similarly, all of the plurality of third disconnectors 2300a, 2300b, and 2300c may be opened and closed in the same state according to driving of the third motor 2500c. That is, when the third motor 2500c is driven according to the seventh control signal, as shown in FIGS. 15(a), 16(a) and 17(a), the plurality of third disconnectors 2300a , 2300b, 2300c) may be blocked (open), respectively. In addition, when the third motor 2500c is driven according to the eighth control signal, as shown in FIGS. 15(b), 16(b) and 17(b), a plurality of third disconnectors 2300a , 2300b, 2300c) may be connected (closed), respectively.

In particular, when the transformer 100 is an ultra-high voltage transformer and must withstand power of 30KV or more and 3000A or more when the secondary terminals 102 are disconnected, it is preferable that at least a plurality of array structures are provided, and at least three It may be most desirable that more than one is provided. However, in the following, for convenience of description, a circuit diagram will be shown and described on the assumption that the first to third array structures AC1 , AC2 , and AC3 are provided, but the present invention is not limited thereto.

The second support 2700 may be implemented in a movable type for convenience of movement. To this end, the second measurement facility 2000 may further include a moving unit 2800 for moving the second support 2700 . For example, the moving unit 2800 includes a wheel disposed under the second support 2700, and may further include a moving motor that provides power for moving the corresponding wheel. In addition, a remote controller may be additionally provided for controlling the movement of the moving motor or the horizontal movement of the wheel (eg, east-west, north-south movement control).

In addition, the second support 2700 may have a fixed shape having a fixed height or a variable shape capable of adjusting its height. If the second supporter 2700 has a variable shape, the horizontal movement of the second supporter 2700 may be adjusted according to the user's manipulation of the remote controller, and the height thereof may also be adjusted by a hydraulic motor or the like. Also, the second measurement facility 2000 may include a lift out trigger 2900 to prevent the facility from tipping over.

18 shows a block configuration diagram of a sensing facility 3000 according to an embodiment of the present invention.

Next, the detection facility 3000 is a facility that detects an abnormal state of the transformer 100 according to power supplied to the primary side of the transformer 100 in the power supply process. At this time, the abnormal state may include an abnormal current state in which current (overcurrent) equal to or greater than a reference value flows in the primary side of the transformer 100 and an abnormal temperature state in which the temperature of the transformer 100 exceeds the reference value.

To this end, as shown in FIG. 18 , the sensing facility 300 may include a current transformer 3100, an ammeter 3200, a temperature sensor 3300, a thermometer 3400, and a monitoring unit 3500. That is, the sensing facility 3000 measures the current for power in the power supply process using the current value of the current transformer 3100, and uses the sensor value of the temperature sensor 3300 to measure the current of the transformer 100 in the power supply process. ), and based on the measured current and temperature, it is possible to detect whether the state of abnormal current and abnormal temperature has occurred.

Specifically, the current transformer (CT) 3100 is installed in each power line connected to the primary terminal 101 of the transformer 100 and detects a current value flowing through the corresponding power line. For example, the current transformer 3100 may be a measurement current transformer that is normally used in a normal load state and saturated in an abnormal current state, but is not limited thereto. Of course, when three-phase power is input to the transformer 100, three current transformers 3100a, 3100b, and 3100c are provided to correspond to this, and each power line of the primary terminal 101 of each phase of the transformer 100 installed on The current transformer 3100 is connected to the ammeter 3200 and transmits a signal of a current value detected by the current transformer 3100 to the ammeter 3200.

The ammeter 3200 measures current for power supplied to the primary side of the transformer 100 based on the current value transmitted from the current transformer 3100 . That is, the ammeter 3200 uses the current value of the current transformer 3100 to measure the current for the power supplied to the transformer 100 in the power supply process. Of course, when three-phase power is input to the transformer 100 and three current transformers 3100a, 3100b, and 3100c are provided, three ammeters 3200a, 3200b, and 3300c are provided to correspond to this, respectively. Measure the current for the power line of the primary terminal 101 of each phase of ). The ammeter 3200 is connected to the monitoring unit 3500 and transmits a signal of current data measured by the ammeter 3200 to the monitoring unit 3500 .

The temperature sensor 3300 is installed inside or outside the transformer 100 to detect a temperature according to heat generated in the transformer 100 . A plurality of temperature sensors 3300 may be provided, and a sensed sensor value is transferred to the thermometer 3400 . For example, a plurality of temperature sensors 3300 may be installed around each primary terminal 101 of the transformer 100 .

The thermometer 3400 measures the temperature of the transformer 100 based on the sensor value transmitted from the temperature sensor 3300 . That is, the thermometer 340 uses the sensor value of the temperature sensor 3300 to measure the temperature of the transformer 100 during the power supply process. For example, the thermometer 3400 may be a digital thermometer that transmits measured temperature data to the monitor 3500 . That is, the thermometer 3400 is connected to the monitoring unit 3500 and transmits a signal of temperature data measured by the thermometer 3400 to the monitoring unit 3500 .

The monitoring unit 3500 is a device for monitoring whether or not an abnormal state occurs in the transformer 100 . That is, the monitoring unit 3500 may monitor the occurrence of an abnormal current state in the power supplied to the transformer 100 during the power supply process using the current value transmitted from the current transformer 3100 . In addition, the monitoring unit 3500 may monitor occurrence of an abnormal temperature state of the transformer 100 during power supply using temperature data transmitted from the thermometer 3400 .

When an abnormal state occurs, the monitoring unit 3500 may generate an alarm signal for this and transmit the corresponding alarm signal to other devices or facilities. For example, the monitoring unit 3500 may transmit a corresponding alarm signal to a power control unit (not shown) that controls power supply to the primary side of the transformer 100 . When such an alarm signal is transmitted, power supplied to the primary side of the transformer 100 may be cut off according to a user's manipulation of the power control unit or a preset emergency control process of the power control unit.

For example, the monitoring unit 3500 may be implemented as a programmable logic controller (PLC) device, but is not limited thereto. However, when the monitoring unit 3500 is implemented as a PLC device, the current data signal of the ammeter 3200 and the temperature data signal of the thermometer 3400 may be respectively input to the input unit of the PLC device, and the power control unit may be input to the PLC device. It can be connected to the output of the device.

19 shows a winding resistance meter 4000 according to an embodiment of the present invention.

Next, the winding resistance meter 4000 is a measuring instrument for measuring the winding resistance between the primary side and the secondary side of the transformer 100 in the resistance measurement process.

For example, referring to FIG. 19, two power supply terminals, two high voltage measurement terminals for measuring the resistance of a relatively high voltage measurement object, and two power terminals for measuring the resistance of a relatively low voltage measurement object. Each of the two low voltage measurement terminals may be included.

That is, a power supply line (indicated by a dotted line) is connected to each power terminal, so that power for driving the winding resistance meter 4000 can be input (supplied) during the resistance measurement process. A high-voltage measurement line (indicated by a dashed-dot line) is connected to each high-voltage measurement terminal, and the voltage between the two high-voltage measurement lines for measuring the winding resistance of the transformer 100 in the resistance measurement process is measured by the winding resistance meter 4000. can be measured In addition, a low voltage measurement line (indicated by a two-dot chain line) is connected to each low voltage measurement terminal, and the voltage between the two low voltage measurement lines for measuring the winding resistance of the transformer 100 in the resistance measurement process is measured by the winding resistance meter (4000). ) can be measured.

20 shows a block configuration diagram of a control facility 5000 according to an embodiment of the present invention.

Next, the control facility 5000 is a facility for controlling the switching of the connection between the primary side of the transformer 100, the secondary side of the transformer 100 and the winding resistance meter 4000 according to the process of supplying power and measuring resistance. am. To this end, referring to FIG. 20 , the control facility 5000 may include an auxiliary control unit 5100 and a main control unit 5200.

The auxiliary controller 5100 is a component that receives a user's input (command) for switching control, and may include one or more. That is, the user may input an input for connection switching according to the process of supplying power and measuring resistance through the auxiliary control unit 5100 . In addition, the auxiliary control unit 5100 is connected to communicate with the main control unit 5200 and can transfer a user's input (command) signal to the main control unit 5100.

For example, the auxiliary control unit 5100 includes a keyboard, a key pad, a dome switch, a touch panel, a touch key, a touch pad, a mouse ( A user's input signal input to a corresponding input means, including an input means such as a mouse, menu button, or touch screen, may be transmitted to the main controller 5200 through wired or wireless communication.

For example, a plurality of auxiliary controllers 5100 may be provided, and the first support 1400 of the first measurement facility 1000, the second support 2700 of the second measurement facility 2000, and a separately provided center At least one or more of the control room may be provided, but is not limited thereto.

For reference, in FIG. 10 , the main controller 5200 and one auxiliary controller 5100 are illustrated as being installed on the second support 2700 of the second measurement facility 2000, but the present invention is not limited thereto.

However, in the present invention, which corresponds to a huge facility when measuring the winding resistance of the (ultra)high voltage transformer 100, the user's moving distance is inevitably increased, and the user's access convenience for connection switching control is required accordingly. can Accordingly, in the present invention, at least one auxiliary control unit 5100 may be provided on the movable first support 1400 or the second support 2700, and in particular, the auxiliary control unit 5100 may control horizontal movement. It may be provided on the first supporter 1400 or the second supporter 2700, and in this case, it is possible to improve the user's access convenience to the auxiliary control unit 5100.

The main controller 5200 controls overall connection switching according to the process of supplying power and measuring resistance. That is, the main control unit 5200 controls the first to third motors 1200, 2500a, 2500b, and 2500c according to the user's input during the process of supplying power and measuring resistance to the first to third disconnectors 1100, 2100, A control signal may be generated to control the closing or opening of the 2200 and 2300.

However, the user's input for controlling such connection switching is transmitted not only through the auxiliary controller 5100, but also can be directly made in the main controller 5200 equipped with an input means. That is, the user may input the connection switching input according to the process of supplying power and measuring resistance to the auxiliary control unit 5100 or the main control unit 5200.

The main control unit 5200 generates a control signal for connection switching in response to a user's input and transfers it to the first to third driving units 1300, 2500a, 2500b, and 2500c.

For example, when a user's input is input (transmitted) according to a power supply process, the main control unit 5200 transfers the first and seventh control signals to the first and third driving units 1300 and 2500c, respectively, and the fourth and seventh control signals are transmitted. By transmitting the sixth control signal to the 2-1 and 2-2 driving units 2600a and 2600b, respectively, the first and third disconnectors 1100 and 2300 are opened and the remaining second disconnectors 2100 , 2200) can be controlled to be closed.

Conversely, when a user's input according to the resistance measurement process is input (transferred), the main control unit 5200 transfers the second and eighth control signals to the first and third driving units 1300 and 2600c, respectively, and By transmitting the fifth control signal to the 2-1 and 2-2 driving units 2600a and 2600b, respectively, the first and third disconnectors 1100 and 2300 are closed and the remaining second disconnectors 2100 , 2200) can be controlled to be blocked (open).

Meanwhile, the main control unit 5200 controls the current state of the disconnectors 1100, 2100, 2200, and 2300 from the first to third driving units 1300, 2500a, 2500b, and 2500c, that is, closed or open. A state signal for a state may be received, and a display according to the state signal may be provided to the user through a display panel (not shown). In addition, the main control unit 5200 may transmit such a state signal to the auxiliary control unit 5100, and in this case, the auxiliary control unit 5100 displays a display according to the received state signal to the user through a display panel (not shown). can provide

In this case, the display panel may be composed of a non-emissive type panel or a light emitting type panel. For example, display panels include liquid crystal displays (LCDs), light emitting diodes (LEDs) displays, organic LEDs (OLEDs) displays, and micro electro mechanical systems (MEMS). ) display, or an electronic paper display, but is not limited thereto.

For example, the main controller 5200 may be implemented as a Programmable Logic Controller (PLC) device, but is not limited thereto. However, when the main control unit 5200 is implemented as a PLC device, the auxiliary control unit 5100 or the input means may be input to the input unit of the PLC device, and the first to third driving units 1300, 2500a, 2500b, and 2500c It can be connected to the output of the PLC device. In addition, lines for transmitting state signals of the first to third driving units 1300, 2500a, 2500b, and 2500c may be input to the input unit of the PLC device.

Hereinafter, a method according to an embodiment of the present invention will be described.

21 shows a flow chart of a method according to one embodiment of the present invention.

The method according to an embodiment of the present invention is a temperature rise test method for the transformer 100, and can be performed using the system 10 described above. As shown in FIG. 21 , the method according to an embodiment of the present invention may include S101 to S103.

22 shows an example of connection switching in the power supply step ( S102 ), and FIG. 23 shows an example of connection switching in the resistance measurement step ( S103 ).

S101 is a stage of arrangement and line connection. That is, in S101 , the first and second measurement facilities 1000 and 2000 may be disposed adjacent to the transformer 100 . Specifically, the first measurement facility 1000 may be disposed adjacent to the primary side of the transformer 100 and the second measurement facility 2000 may be disposed adjacent to the secondary side of the transformer 100 .

In addition, in S101, electrical connection (ie, line connection) between the transformer 100 and each of the facilities 1000 and 2000 is performed. That is, the transformer 100, the first disconnector 1100 of the first measurement facility 1000, the second and third disconnectors 2100, 2200, and 2300 of the second measurement facility 2000, and the winding resistance meter Line connection may be performed for each of (4000).

Referring to FIGS. 22 and 23, the line connection will be described in more detail.

First, in the transformer 100, primary-side windings may have a Y-connection structure, and secondary-side windings may have a delta-connection structure.

According to the wiring structure of the primary and secondary sides of the transformer 100, when measuring the winding resistance in S103, line connections that enable voltage measurement on the primary and secondary sides of the transformer 100 are performed, and multiple At least one of the first disconnectors 1100a, 1100b, and 1100c is connected between the primary terminal 101 of the transformer and the winding resistance meter 4000, and at least one of the plurality of third disconnectors 1100a, 1100b, and 1100c is connected between the secondary terminal 102 of the transformer and the winding resistance meter 4000.

First, when measuring winding resistance in S103, line connection is performed to enable voltage measurement on the primary side of the transformer 100.

That is, the primary contactors 1101a, 1101b, and 1101c of the plurality of first disconnectors 1100a, 1100b, and 1100c are connected to the two primary terminals 101a and 101d of the transformer 100. In addition, for power supply for driving the winding resistance meter 4000 in S103 and high voltage measurement of the winding resistance meter 4000 (ie, measurement of the primary side of the transformer), the first disconnectors 1100a, 1100b, 1100c The secondary contactors 1102a, 1102b, and 1102c of ) are connected to the first power supply terminal and the high voltage measurement terminal of the winding resistance meter 4000, respectively.

Specifically, in the plurality of first disconnectors 1100a, 1100b, and 1100c, the primary contactor 1101a of the 1-1 disconnector 1100a is connected to the primary terminal 101b of the second phase of the transformer 100, , the primary contactors 1101b and 1101c of the 1-2 disconnectors 1100b and 1-3 disconnectors 1100c are connected to the primary terminal 101d of the neutral point of the transformer 100. In addition, the secondary contactor 1102a of the 1-1 disconnector 1100a is connected to the first power supply terminal and the first high voltage measurement terminal of the winding resistance meter 4000, respectively, and the second contactor 1102a of the 1-2 disconnector 1100b The secondary contactor 1102b is connected to the second high voltage measuring terminal of the winding resistance meter 4000.

In particular, when measuring the winding resistance in S103, a jumper line for power supply to the secondary side of the transformer 100 is connected. That is, at least one secondary contactor among the plurality of first disconnectors 1100a, 1100b, and 1100c is connected to the 3-1 disconnector 2300c among the plurality of third disconnectors 1100a, 1100b, and 1100c through a jumper line. ) is connected to the secondary contactor 2302c. Specifically, the secondary contactor 1102c of the 1-3 disconnector 1100c is connected to the secondary contactor 2302c of the 3-1 disconnector 2300c through a jumper line.

Next, when measuring winding resistance in S103, line connection is performed to enable voltage measurement on the secondary side of the transformer 100.

That is, among the plurality of third disconnectors 2300a, 2300b, and 2300c, the primary contactor 2300a of the 3-1 disconnector 2300a is connected to the secondary terminal 102 of the transformer 100, and the plurality of third disconnectors 2300a At least one of the disconnectors 2300a, 2300b, and 2300c, except for the 3-1 disconnector 2300a, has primary and secondary contactors connected to the winding resistance meter 4000 and the secondary terminal 102 of the transformer 100. connected to each

Specifically, in the plurality of third disconnectors 2300a, 2300b, and 2300c, the primary contactors 2301a and 2301c of the 3-1 disconnector 2300a and the 3-3 disconnector 2300c are It is connected to the secondary terminal 102b of the second phase, and the primary contactor 2301b of the 3-2 disconnector 2300b is connected to the secondary terminal 102c of the third phase of the transformer 100.

In addition, for power supply for driving the winding resistance meter 4000 in S103 and low voltage measurement of the winding resistance meter 4000 (that is, measurement of the secondary side of the transformer), the 3-2 disconnector 2300b The secondary contactor 2302b is connected to the second power terminal and the first low voltage measurement terminal of the winding resistance meter 4000, respectively, and the secondary contactor 2302c of the 3-3 disconnector 2300c is connected to the winding resistance meter 4000. ) is connected to the second low voltage measurement terminal.

On the other hand, line connection is also performed to enable switching such that the secondary terminals 102a, 102b, and 102c of the transformer 100 are short-circuited in S102 and open-circuited in 103. That is, the plurality of second disconnectors 2100 and 2200 are connected to the secondary terminals 102a, 102b, and 102c of the transformer 100.

Specifically, referring to FIGS. 18, 22, and 23, the plurality of second disconnectors 2100 and 2200 are arranged in which the 2-1 disconnector 2100 and the 2-2 disconnector 2200 are connected to the first bus bar. A plurality of structures (AC1, AC2, AC3) are implemented. At this time, in the plurality of array structures AC1, AC2, and AC3, the primary contactors 2101a, 2101b, and 2101c of the 2-1 disconnectors 2100a, 2100b, and 2100c are connected to the second busbar, and the second The secondary contactors 2102a, 2102b, 2102c of the -1 disconnectors 2100a, 2100b, 2100c or the primary contactors 2201a, 2201b, 2201c of the 2-2 disconnectors 2200a, 2200b, 2200c It is connected to the third busbar, and the secondary contactors 2202a, 2202b, and 2202c of the 2-2 disconnectors 2200a, 2200b, and 2200c are connected to the fourth busbar. Accordingly, the three-phase secondary terminals 102a, 102b, and 102c of the transformer 100 are connected to the second to fourth busbars, respectively.

Next, S102 is a step in which the above-described power supply process is performed.

In S102, as shown in FIG. 22, the secondary terminals 102 of the transformer 100 are in a short-circuit state according to the control signal of the main control unit 5200, and the primary terminals 101 of the transformer 100 3-phase power is supplied respectively.

That is, the plurality of first disconnectors 1100a, 1100b, and 1100c and the plurality of third disconnectors 2300a, 2300b, and 2300c of the transformer 100 are disconnected (open) to be connected for measurement of winding resistance of the transformer 100. this is released In addition, the plurality of second disconnectors 2100 and 2200 are closed so that the secondary terminals 102a, 102b, and 102c of the transformer 100 are short-circuited.

Specifically, when a user's input is input (transferred) according to the power supply process, while 3-phase power is applied to the primary terminals 101 of the transformer 100, the main control unit 5200 operates the first and seventh Control signals are generated and transmitted to the first and third driving units 1300 and 2500c, respectively, and fourth and sixth control signals are generated and transmitted to the 2-1 and 2-2 driving units 2600a and 2600b, respectively. Accordingly, the first and third disconnectors 1100 and 2300 are closed (open) and the remaining second disconnectors 2100 and 2200 are connected (closed). As a result, the connections for resistance measurement on the primary side and the secondary side of the transformer 100 become open, and the secondary terminals 102 of the transformer 100 become short-circuited.

In this state, a three-phase power source having a current compensating for total loss (load loss, no-load loss) is applied to the primary terminals 101 of the transformer 100. Accordingly, the temperature of the transformer 100 can be saturated (eg, a condition in which the temperature does not change by more than 1 degree for 1 hour is maintained for 3 hours).

Thereafter, in order to stabilize the winding, a three-phase power having a current of a load condition is applied to the primary terminals 101 of the transformer 100 for about 1 hour.

Next, S103 is a step in which the above-described resistance measurement process is performed.

In S103, as shown in FIG. 23, the three-phase power applied to the primary terminals 101 of the transformer 100 is cut off, and the secondary terminal of the transformer 100 is cut off according to the control signal of the main control unit 5200. The terminals 102 are opened, and the three-phase power supplied to the primary terminals 101 of the transformer 100 is cut off. Then, in this state, the winding resistance of the transformer 100 is measured.

That is, the plurality of first disconnectors 1100a, 1100b, and 1100c and the plurality of third disconnectors 2300a, 2300b, and 2300c of the transformer 100 are connected to measure the winding resistance of the transformer 100. this is implemented In addition, the plurality of second disconnectors 2100 and 2200 are cut off (open), and the short circuit state of the secondary terminals 102a, 102b, and 102c of the transformer 100 is released.

Specifically, when a user's input according to the resistance measurement process is input (transferred), the three-phase power applied to the primary terminals 101 of the transformer 100 is cut off, and the main control unit 5200 operates the second and An eighth control signal is generated and transmitted to the first and third driving units 1300 and 2600c, respectively, and a third and fifth control signal is generated and transmitted to the 2-1 and 2-2 driving units 2600a and 2600b, respectively. do. Accordingly, the first and third disconnectors 1100 and 2300 are connected (closed) and the remaining second disconnectors 2100 and 2200 are closed (open). Accordingly, the short circuit state of the secondary terminals 102 of the transformer 100 is released, and the connection for measuring the winding of the transformer 100, that is, the connection for measuring the resistance of the primary side and the secondary side of the transformer 100 is established. It is done.

Accordingly, as power is supplied to the power terminal of the winding resistance measuring instrument 4000 and the winding resistance measuring instrument 4000 is driven, the primary side resistance of the transformer 100 is measured through the two high voltage measuring terminals of the winding resistance measuring instrument 4000. Secondary resistance of the transformer 100 may be measured through two low voltage measurement terminals of the winding resistance meter 4000. Also, based on the winding resistance measured by the winding resistance meter 4000, the temperature of the transformer 100, that is, the temperature of the winding and insulation (oil, etc.) can be predicted.

The present invention configured as described above not only implements an automation technology for the temperature rise test of the transformer, but also can be applied to (ultra) high voltage transformers while satisfying switching conditions and time conditions. There are benefits to being able to That is, the present invention has the advantage of being able to quickly, accurately and safely perform switching of various connections between the transformer and the winding resistance meter required in the process of supplying power and measuring resistance during the temperature rise test of the transformer quickly, accurately and safely with a minimum number of personnel.

In the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention is not limited to the described embodiments, and should be defined by the following claims and equivalents thereof.

10: system 100: transformer
101: primary terminal 102: secondary terminal
1000: first measuring facility 1100: first disconnector
1101, first contactor 1102: second contactor
1200: first motor 1300: first driving unit
1400: first support 1500: moving unit
2000: second measuring facility 2100, 2200: second disconnector
2300: third disconnector 2400: connection
2500a, 2500b: 2nd motor 2500c: 3rd motor
2600a, 2600b: second driving unit 2600c: third driving unit
2700: second support 2800: moving unit
2900: Outrigger 3000: Surveillance Facility
3100: current transformer 3200: ammeter
3300: temperature sensor 3400: thermometer
3500: monitoring unit 4000: winding resistance meter
5000: control facility 5100: auxiliary control unit
5200: main control unit

Claims (16)

A power supply process in which three-phase power is supplied to the primary terminals of the transformer in a short-circuit state of the secondary terminals of the transformer, and measuring the winding resistance of the transformer in a state in which power supply to each primary terminal is cut off A system for performing a transformer temperature rise test each including a resistance measurement process,
a plurality of first disconnectors, which are closed or opened between the primary contactor and the secondary contactor according to the driving of the first motor, and disposed adjacent to the primary terminal of the transformer;
a plurality of second disconnectors disposed adjacent to the secondary terminal side of the transformer and connecting (closed or opened) between the primary contactor and the secondary contactor according to the driving of the second motor;
a plurality of third disconnectors, which are closed or opened between the primary and secondary contactors according to the driving of the third motor and disposed adjacent to the secondary terminal of the transformer; and
A main control unit that controls the first to third motors to control the first to third disconnectors to be closed or opened according to a user's input during the power supply process and the resistance measurement process. and
For the measurement of the winding resistance, at least one of the plurality of first disconnectors is connected between the primary terminal of the transformer and the winding resistance meter, and at least one of the plurality of third disconnectors is connected to the secondary terminal of the transformer. It is connected between the winding resistance meter,
A system in which the plurality of second disconnectors are connected to the secondary terminals of the transformer to implement a short circuit state of the secondary terminals of the transformer.
According to claim 1,
The plurality of second disconnectors implement a plurality of arrangement structures in which the 2-1 disconnectors and the 2-2 disconnectors are connected to the first bus bar,
In the plurality of array structures, the primary contactors of the 2-1 disconnectors are connected to the second bus bar, and the secondary contactors of the 2-1 disconnectors or the primary contactors of the 2-2 disconnectors are connected to the third bus bar. And, the secondary contactors of the 2-2 disconnectors are connected to the 4th bus bar,
The secondary terminals of the three phases of the transformer are connected to the second to fourth busbars one by one.
According to claim 2,
The plurality of array structures is a system in which the number of array structures acting as a short circuit varies according to the magnitude of the output current of the secondary terminals of the transformer when the secondary terminals of the transformer are short-circuited.
According to claim 2,
Primary contactors of the plurality of first disconnectors are connected to primary terminals of the transformer, at least one secondary contactor of the plurality of first disconnectors is connected to a winding resistance meter, and At least one other secondary contactor is connected to a secondary contactor of a 3-1 disconnector among the plurality of third disconnectors through a jumper line,
The primary contactor of the 3-1 disconnector is connected to the secondary terminal of the transformer, and at least one of the plurality of third disconnectors except for the 3-1 disconnector is a winding resistance meter. and a system each connected to the secondary terminals of the transformer.
According to claim 4,
The windings of the primary side in the transformer have a structure of wye (Y) connection, the windings of the secondary side of the transformer have a structure of delta (delta) connection system.
According to claim 5,
In the power supply process, the three-phase power is supplied to the primary terminals of the first to third phases of the transformer, respectively,
In the plurality of first disconnectors, the primary contactors of the 1-1 disconnectors are connected to the primary terminals of the second phase of the transformer, and the primary contactors of the 1-2 disconnectors and the 1-3 disconnectors are connected to the primary contactors of the transformer. It is connected to the primary terminal of the neutral point, the secondary contactor of the 1-1 disconnector is connected to the 1st power terminal and the 1st high voltage measurement terminal of the winding resistance meter, respectively, and the secondary contactor of the 1-2 disconnector is the winding resistance It is connected to the second high voltage measurement terminal of the measuring instrument, and the secondary contactor of the disconnector 1-3 is connected to the secondary contactor of the disconnector 3-1 through a jumper line.
In the plurality of third disconnectors, the primary contactors of the 3-1 disconnector and the 3-3 disconnector are connected to the secondary terminal of the second phase of the transformer, and the primary contactor of the 3-2 disconnector is the transformer. It is connected to the secondary terminal of phase 3, the secondary contactor of the 3-2 disconnector is connected to the 2nd power terminal and the 1st low voltage measurement terminal of the winding resistance meter, respectively, and the secondary contactor of the 3-3 disconnector is connected to the winding System connected to the second low voltage measurement terminal of the resistance meter.
According to claim 1,
Based on the current value of the current transformer (CT) connected to each primary terminal of the transformer, the abnormal current state of the power supplied to the transformer during the power supply process is monitored, and based on the sensor value of the temperature sensor installed in the transformer The system further comprises a monitoring facility for monitoring an abnormal temperature state of the transformer in the power supply process.
According to claim 7,
The monitoring facility transmits an alarm signal to a power control unit that controls supply of the power when the abnormal current state or the abnormal temperature state occurs.
According to claim 1,
a first support supporting the plurality of first disconnectors; and
A system further comprising a second supporter for supporting the plurality of second and third disconnectors.
According to claim 9,
The first and second supports are implemented to be movable.
According to claim 10,
A system in which at least one of the first and second supports is capable of height adjustment and horizontal movement adjustment through a remote controller.
According to claim 9,
a first driving unit connected to the main controller and installed on the first support to drive a first motor according to a control signal from the main controller;
a second driving unit connected to the main controller and installed on the second support to drive the second motor according to a control signal from the main controller; and
a third driving unit connected to the main controller and installed on the second support to drive the third motor according to a control signal from the main controller;
A system further comprising a.
According to claim 1,
It is connected to the main control unit, receives the user's input, transmits it to the main control unit, and transmits a signal about the connection or disconnection state of the first to third disconnectors transmitted to the main control unit through the first to third driving units. The system further comprises a display panel for receiving and displaying from the main control unit.
According to claim 1,
In the process of supplying power, the plurality of first disconnectors and the plurality of third disconnectors are cut off (open) to release the connection for measuring the winding resistance, and at least a part of the plurality of second disconnectors is closed. ) so that the secondary terminals of the transformer are in a short-circuit state,
In the resistance measurement process, the plurality of first disconnectors and the plurality of third disconnectors are closed to implement a connection for measuring the winding resistance, and the plurality of second disconnectors are opened to A system in which the secondary terminals of the transformer are disconnected from the short circuit.
A power supply process in which three-phase power is supplied to the primary terminals of the transformer in a short-circuit state of the secondary terminals of the transformer, and a winding resistance of the transformer is measured in a state in which the power supply to each primary terminal is cut off. As a system for performing a transformer temperature rise test, each including a resistance measurement process,
A plurality of first disconnectors that are cut off (open) in the power supply process and closed in the resistance measurement process according to the driving of the first motor, and a first supporter for supporting each of the first disconnectors, respectively, a first measurement facility disposed adjacent to the primary terminal side of the transformer;
A plurality of second disconnectors, at least some of which are closed in the power supply process according to the driving of the second motor and all of them are open in the resistance measurement process, and the power supply process according to the driving of the third motor A plurality of third disconnectors that are opened in and closed during the resistance measurement process, and second supports supporting the second and third disconnectors, respectively, adjacent to the secondary terminal side of the transformer. a second measurement facility disposed thereon; and
A main control unit for controlling connection or disconnection of the first to third disconnectors by controlling the first to third motors in the process of supplying power and measuring the resistance according to a user's input,
For the measurement of the winding resistance, at least one of the plurality of first disconnectors is connected between the primary terminal of the transformer and the winding resistance meter, and at least one of the plurality of third disconnectors is connected to the secondary terminal of the transformer. It is connected between the winding resistance meter,
A system in which the plurality of second disconnectors are connected to the secondary terminals of the transformer to implement a short circuit state of the secondary terminals of the transformer.
A plurality of disconnectors that are connected (closed or opened) according to the driving of the motor, and a main control unit that controls the connection (closed) or disconnected (open) of the plurality of disconnectors by controlling the motor according to the user's input. As a method for testing the temperature rise of a transformer performed using a system comprising:
a power supply step of supplying three-phase power to primary terminals of the transformer in a short-circuited state of secondary terminals of the transformer; and
A resistance measurement step of measuring the winding resistance of the transformer in a state in which power supply to each of the primary terminals is cut off; includes,
In the step of supplying power, the plurality of first disconnectors disposed adjacent to the primary terminal side of the transformer and the plurality of third disconnectors disposed adjacent to the secondary terminal side of the transformer are opened to measure the winding resistance. Disconnecting the transformer, and at least a part of the plurality of second disconnectors disposed adjacent to the secondary terminal side of the transformer is closed so that the secondary terminals of the transformer are in a short-circuit state,
In the resistance measuring step, the plurality of first disconnectors and the plurality of third disconnectors are closed to implement a connection for measuring the winding resistance, and the plurality of second disconnectors are opened to form the transformer. A method comprising the step of releasing the short circuit state of the secondary terminals of.

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