KR102609351B1 - System and method for temperature-rise test automation - Google Patents

Abstract

The present invention relates to an automated system and method for temperature rise testing of transformers. The system according to an embodiment of the present invention includes a power supply process in which three-phase power is supplied to each of the primary terminals of the transformer in a short-circuited state of the secondary terminals of the transformer, and blocking the power supply to each of the primary terminals. A system for performing a transformer temperature rise test that includes a resistance measurement process for measuring the winding resistance of the transformer in a state in which the primary contactor and the secondary contactor are closed or closed depending on the driving of the first motor. a plurality of first disconnectors that are open and disposed adjacent to the primary terminal of the transformer; a plurality of second disconnectors disposed adjacent to the secondary terminal of the transformer and connected (closed) or open (open) between the primary contactor and the secondary contactor according to the driving of the second motor; a plurality of third disconnectors disposed adjacent to the secondary terminal of the transformer and connected (closed) or open (open) between the primary contactor and the secondary contactor according to the driving of the third motor; And a main control unit that controls the first to third motors in the power supply process and the resistance measurement process according to the user's input to control the connection (closed) or blocking (open) of the first to third disconnectors; Includes.

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 specifically, to a system that can implement automation for a temperature rise test of a transformer that predicts the transformer temperature based on measurement of the winding resistance of the transformer, and It's about method.

A transformer is a device that converts the magnitude of the voltage or current of the input power and outputs it. To determine the characteristics of these transformers, various tests (hereinafter referred to as “transformer tests”) can be performed on the transformer.

Among these transformer tests, there is a representative temperature rise test. The temperature rise test is a test to verify whether the temperature rise of the windings and insulating materials (oil, etc.) is within specified limits under the rated operating conditions of the transformer. For this purpose, the winding resistance of the transformer must be measured under certain conditions. At this time, the transformer temperature (i.e., the temperature of the winding and insulating material) can be predicted based on the measured winding resistance.

Specifically, the temperature rise test requires the process of supplying power to the transformer under specific conditions and then measuring the winding resistance of the transformer under other specific conditions. At this time, in order to perform these processes, various switching, such as switching related to power supply and switching related to winding resistance measurement, is 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 while the corresponding switching is performed (time condition).

Accordingly, in the conventional case, when performing temperature rise tests on (ultra) high-voltage transformers used in transmission and distribution power systems, the above-described switching conditions and time conditions must be satisfied for transformers that occupy a large volume, so a number of Workers had no choice but to be mobilized. For example, switching conditions, such as connecting the wiring between the primary and secondary sides of the transformer and the winding resistance meter to measure winding resistance after cutting off the power supplied to the primary of the transformer, must be accomplished within a short period of time, and large volume transformers As a result, the operator's travel distance to perform switching conditions increases, making it impossible to measure winding resistance within that time with one or two operators.

However, the above-described content can only be used as a reference for understanding the present invention and does not correspond to the content of known technology.

Meanwhile, there is a prior art (KR 10-2194779 B) for testing various transformers. However, in the case of this prior art, since it targets low-voltage transformers, it has parts and structures that are unsuitable for (ultra) high voltage, and is impossible to perform while satisfying the above-mentioned switching conditions and time conditions. Accordingly, the prior art is difficult to apply to (ultra) high voltage transformers, and especially cannot be used for temperature rise tests.

KR 10-2194779 B

In order to solve the problems of the prior art as described above, the purpose of the present invention is to provide a technology that can implement automation of the temperature rise test of a transformer.

In addition, the purpose of the present invention is to provide technology to automate temperature rise testing of transformers 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 problems mentioned above, 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 includes a power supply process in which three-phase power is supplied to the primary terminals of the transformer in a short-circuited state of the secondary terminals of the transformer, and each of the first A system for performing a transformer temperature rise test that includes a resistance measurement process of measuring the winding resistance of the transformer while the power supply to the secondary terminal is cut off, and the primary contactor and the secondary contactor according to the driving of the first motor. A plurality of first disconnectors are connected (closed) or open (open) and disposed adjacent to the primary terminal of the transformer; a plurality of second disconnectors disposed adjacent to the secondary terminal of the transformer and connected (closed) or open (open) between the primary contactor and the secondary contactor according to the driving of the second motor; a plurality of third disconnectors disposed adjacent to the secondary terminal of the transformer and connected (closed) or open (open) between the primary contactor and the secondary contactor according to the driving of the third motor; And a main control unit that controls the first to third motors in the power supply process and the resistance measurement process according to the user's input to control the connection (closed) or blocking (open) of the first to third disconnectors; Includes.

To measure 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 measuring device, 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 array structures in which the 2-1 disconnector and the 2-2 disconnector are connected to the first busbar.

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

The three-phase secondary terminals of the transformer may be connected one by one to the second to fourth busbars.

When the secondary terminals of the transformer are short-circuited, the number of the plurality of array structures acting as a short-circuit may vary depending on 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, and at least one secondary contactor of the plurality of first disconnectors is connected to a winding resistance meter. At least one other 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 the primary and secondary contactors of at least one of the plurality of third disconnectors excluding the 3-1 disconnector are connected to a winding resistance meter. and can be connected to the secondary terminal of the transformer, respectively.

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

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

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

In the plurality of third disconnectors, the primary contactor of the 3-1 disconnector and the 3-3 disconnector is connected to the secondary terminal of the second phase of the transformer, and the primary contactor of the 3-2 disconnector is connected to the secondary terminal of the transformer. It is connected to the secondary terminal of the third phase, and the secondary contactor of the 3-2 disconnector is connected to the second power terminal and the first low voltage measurement terminal of the winding resistance meter, respectively, and the secondary contactor of the 3-3 disconnector is connected to the winding resistance meter. It can be connected to the second low voltage measurement 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 during the power supply process based on the current value of the current transformer (CT) connected to each primary terminal of the transformer, and It may further include a monitoring facility that monitors abnormal temperature conditions of the transformer during the power supply process based on the sensor value of the temperature sensor installed in the transformer.

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

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

The system according to an embodiment of the present invention is connected to the main control unit, receives the user's input and transmits it to the main control unit, and the first to third driving units are transmitted to the main control unit through the first to third driving units. It may further include a display panel that receives and displays signals about the connection or disconnection status of the three disconnectors from the main control unit.

During the power supply process, the plurality of first disconnectors and the plurality of third disconnectors are blocked (open) and disconnected for measuring the winding resistance, and at least a portion of the plurality of second disconnectors are connected (closed). ), the secondary terminals of the transformer may become short-circuited.

In the resistance measurement process, the plurality of first disconnectors and the plurality of third disconnectors are connected (closed) to implement connection for measuring the winding resistance, and the plurality of second disconnectors are blocked (open) The secondary terminals of the transformer may be released from a short circuit.

A system according to another embodiment of the present invention includes a power supply process in which three-phase power is supplied to the primary terminals of the transformer in a short-circuited state of the secondary terminals of the transformer, and power supply to each of the primary terminals. A system for performing a transformer temperature rise test that includes a resistance measurement process for measuring the winding resistance of the transformer in a cut-off state, wherein the system is cut off (open) in the power supply process according to the driving of the first motor and the resistance is measured. a first measuring facility each having a plurality of first disconnectors connected (closed) in the process and a first supporter supporting each of the first disconnectors, and disposed adjacent to the primary terminal of the transformer; A plurality of second disconnectors, at least some of which are connected (closed) in the power supply process according to the driving of the second motor and all of which are blocked (open) in the resistance measurement process, and the power supply process according to the driving of the third motor A plurality of third disconnectors are blocked (open) and connected (closed) during the resistance measurement process, and a second supporter supporting the second and third disconnectors, adjacent to the secondary terminal of the transformer. a second measuring facility arranged; and a main control unit that controls connection or disconnection of the first to third disconnectors by controlling the first to third motors in the power supply process and the resistance measurement process according to the user's input.

A method according to an embodiment of the present invention includes a plurality of disconnectors that are connected (closed) or blocked (open) according to the driving of a motor, and the plurality of disconnectors 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, in which three-phase power is supplied to the primary terminals of the transformer in a short-circuited state of the secondary terminals of the transformer. power supply stage; and a resistance measurement step of measuring the winding resistance of the transformer while the power supply to each primary terminal is cut off.

In the power supply step, a plurality of first disconnectors disposed adjacent to the primary terminal of the transformer and a plurality of third disconnectors disposed adjacent to the secondary terminal of the transformer are blocked (open) to measure the winding resistance. The connection may be released, and at least a portion of a plurality of second disconnectors disposed adjacent to the secondary terminal of the transformer may be connected (closed), thereby causing the secondary terminals of the transformer to be in a short-circuit state.

In the resistance measurement step, the plurality of first disconnectors and the plurality of third disconnectors are connected (closed) to implement connection for measuring the winding resistance, and the plurality of second disconnectors are blocked (open) to connect the transformer. It may include a step in which the secondary terminals of are released from the short-circuit state.

The present invention, constructed as described above, not only implements automation technology for temperature rise testing of transformers, but also has the advantage of being applicable to (ultra) high-voltage transformers while satisfying switching conditions and time conditions.

In other words, the present invention has the advantage of being able to quickly, accurately and safely perform the switching of various connections between the transformer and the winding resistance meter required in the power supply process and resistance measurement process during the temperature rise test of the transformer with a minimum number of people.

The effects that can be obtained from 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.

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

The above purpose and means of the present invention and the resulting effects will become clearer through the following detailed description in conjunction with the accompanying drawings, and thus the technical idea of the present invention will be easily understood by those skilled in the art. It will be possible to implement it. Additionally, in describing the present invention, if it is determined that a detailed description of known technologies related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

The terminology used herein is for describing embodiments and is not intended to limit the invention. In this specification, singular forms also include plural forms, as appropriate, unless specifically stated otherwise in the context. In this specification, terms such as “comprise,” “provide,” “provide,” or “have” do not exclude the presence or addition of one or more other components other than the mentioned components.

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

In this specification, descriptions under “for example” and the like may not exactly match the information presented, such as cited characteristics, variables, or values, and may be subject to tolerances, measurement errors, limits of measurement accuracy and other commonly known factors. Effects such as modifications, including, should not limit the embodiments of the invention according to various embodiments of the present invention.

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 other components may exist in between. It must be understood that it may be possible. On the other hand, when a component is mentioned as being 'directly connected' or 'directly connected' to another component, it should be understood that there are no other components in between.

In this specification, when a component is described as being ‘on’ or ‘in contact with’ another component, it may be in direct contact with or connected to the other component, but there may be another component in between. It must be understood that it can be done. On the other hand, if a component is described as being 'right above' or 'in direct contact' with another component, it can be understood that there is no other component in the middle. Other expressions that describe 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 components, but the components should not be limited by the above terms. Additionally, the above term should not be interpreted as limiting the order of each component, but may be used for the purpose of distinguishing one component from another component. For example, a 'first component' may be named a 'second component', and similarly, a 'second component' may also be named a 'first component'.

Unless otherwise defined, all terms used in this specification may be used with meanings that can be commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless clearly specifically defined.

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

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

The system 10 according to an embodiment of the present invention is a system applied to test the temperature rise of the transformer 100. As shown in FIG. 1, the system 10 includes a first measurement facility 1000 and a second measurement facility 2000. ), monitoring equipment (3000), winding resistance measuring instrument (4000), and control equipment (5000).

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

The transformer 100 is a device that converts the magnitude of the voltage or current of the input power and outputs it. That is, the transformer 100 can 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 on the secondary side is a power source with a lower voltage level than the input power on the primary side, but when the transformer 100 is an (ultra) high voltage transformer, the output power on the secondary side is still an (ultra) high voltage power source. It may apply to

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

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

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

Referring to FIG. 3, as implemented in the first wiring method, the transformer 100 has primary terminals 101a, 101b, and 101c that receive 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 , L ₁₃ ), and includes secondary terminals 102a, 102b, and 102c that output the converted three-phase low-voltage power to the secondary side.

That is, the 1-1, 1-2, and 1-3 windings (L ₁₁ , L ₁₂ , and L ₁₃ ) included in the primary side of the transformer 100 are connected by a wye connection, so that each other end is connected to the neutral point. It is connected to the primary 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, the 2-1, 2-2, and 2-3 windings (L ₂₁ , L ₂₂ , and L ₂₃ ) included in the secondary side of the transformer 100 are connected by delta connection, so these windings (L ₂₁ , L ₂₂ , L ₂₃ ) have one end and the other end connected to each other. That is, the other end of the 2-1st winding ( _L21 ) and one end of the 2-2nd winding ( _L22 ) are connected, and the other end of the 2-2nd winding ( _L22 ) and the 2-3rd winding ( _L23 ) 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 first to third phase secondary terminals (102a, 102b, 102c) are located at each end of the 2-1, 2-2, and 2-3 windings (L ₂₁ , L ₂₂ , L ₂₃ ), respectively. 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-circuited state of the secondary terminals 102 of the transformer 100. In addition, the resistance measurement process refers to the process of measuring the winding resistance of the transformer 100 in a state in which the power supply to each primary terminal 101 of the transformer 100 is cut off. In other words, the system 10 is a system for performing a temperature rise test, and may be a system for performing the power supply process and resistance measurement process.

FIG. 4 shows one side of the first measurement equipment 1000, and FIG. 5 shows another side of the first measurement equipment 1000, showing the first measurement equipment 1000 of FIG. 4 rotated 90° on the plane. represents.

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

Figure 6 shows a perspective view of the area of the first disconnector 1100 in the first measuring equipment 1000, and Figure 7 is a side view of the area of the first disconnector 1100 in the first measuring equipment 1000, Shows the opening and closing of the first disconnector 1100. Additionally, Figure 8 shows a circuit diagram for opening and closing a plurality of first disconnectors 1100a, 1100b, and 1100c.

The first disconnector 1100 is a device that opens and closes the electric circuit in a no-load state, and is provided in plural pieces. In particular, the first disconnector 1100 performs switching on the connection between the primary terminal 101 of the transformer 100 and the winding resistance meter 4000 during the power supply process and resistance measurement process depending on whether it is opened or closed, and the transformer 100 ) can support switching for the connection between the primary terminal 101 and the secondary terminal 102.

Referring to FIGS. 4 to 7, one first disconnector 1100 is capable of moving (or rotating) with a primary contactor 1101, which is a contact terminal, and a secondary contactor 1102, which is another contact terminal. 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. may include.

At this time, the first and second 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 first and second contactors 1101 and 1102 is exposed at the insulator, and the contact movable part 1103 is formed by the exposed conductive part of the primary contactor 1102 and the exposed conductive part of the secondary contactor 1102. The gap can be opened and closed.

For example, when the first motor 1200 is driven, the support part 1104 moves according to the rotational movement of the first motor 1200, and as the support part 1104 moves, the contact movable part connected to the support part 1104 (1103) moves (or rotates). As a result, depending on the movement (or rotation) of the contact movable part 1103, the primary contactor 1101 and the secondary contactor 1102 may 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 to connect the primary contactor 1101 and secondary contactor 1102 of the first disconnector 1100. may 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 to connect the primary contactor 1101 and the secondary contactor 1102 of the first disconnector 1100. ) can be connected (closed).

The first driving unit 1300 is configured to drive the first motor 1200 by communicating with the control facility 5000. That is, the first driving unit 1300 transmits a driving current to the first motor 1200 according to the control signal received from the control facility 5000.

For example, when the first control signal for blocking (open) of the first disconnector 1100 is received from the control equipment 5000, the first driving unit 1300 drives the first motor 1200 to rotate in one direction. By applying current to the first motor 1200, the space between the primary contactor 1101 and the secondary contactor 1102 of the first disconnector 1100 can be opened. In addition, when the second control signal for the connection (closed) of the first disconnector 1100 is received from the control equipment 5000, the first drive unit 1300 is used to rotate the first motor 1200 in the other direction. By applying the driving current to the first motor 1200, the primary contactor 1101 and the secondary contactor 1102 of the first disconnector 1100 can be connected (closed).

In addition, the first driver 1300 may determine the current state of the first disconnector 1100, that is, a 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 open or closed, or detects the recent or current driving of the first motor 1200. Based on the state, the current state of the first disconnector 1100 can be determined. In particular, the first driver 1300 may drive the first motor 1200 according to the first and second control signals and then transmit the resulting signal to the control facility 5000.

Meanwhile, a plurality of first disconnectors 1100 are provided to correspond to the number of power inputs to the transformer 100 or 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. The plurality of first disconnectors 1100a, 1100b, and 1100c may all be opened and closed in the same state according to the 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. 8(a), the plurality of first disconnectors 1100a, 1100b, and 1100c are each blocked (open). You can. In addition, when the first motor 1200 is driven according to the second control signal, as shown in FIG. 8(b), the plurality of first disconnectors 1100a, 1100b, and 1100c are each connected (closed). You can.

The first support 1400 serves as a support for other components of the first measurement equipment 1000. That is, the first disconnector 1100, the first motor 1200, and the first driving unit 1300 are disposed on the first support 1400, and the first support 1400 supports them, respectively. In particular, the first disconnector 1100 is located on the top of the first support 1400 to correspond to the height of the primary terminal 101 of the transformer 100. That is, the first supporter 1400 supports the first disconnector 1100 and allows the first disconnector 1100 to be disposed adjacent to the primary terminal 101 of the transformer 100 located at a certain height. . For example, since the (ultra) high voltage transformer 100 is manufactured in a large size, its primary terminal 101 is generally located at a considerable height of 3 m or more, and accordingly, the first support 1400 is a first disconnector ( 1100) can be placed adjacent to the corresponding height.

It may be desirable for the first support 1400 to be implemented as a movable type for convenience of movement. To this end, the first measurement equipment 1000 may further include a moving unit 1500 for moving the first support 1400. For example, the moving unit 1500 includes a wheel disposed below the first support 1400, and may further include a moving motor that provides power for moving the wheel. Additionally, a remote controller may be additionally provided to operate the moving motor or control the horizontal movement of the wheels (e.g., adjusting the east, west, south, south, and south movements).

Additionally, the first support 1400 may have a fixed height or a variable height whose height can be adjusted. If the first support 1400 has a variable shape, not only can the horizontal movement of the first support 1400 be adjusted according to the user's operation of the remote controller, but its height can also be adjusted by a hydraulic motor or the like. Additionally, the second measurement facility 2000 may be implemented with a lift out trigger (not shown) to prevent the facility from falling.

FIG. 9 shows one side of the second measuring device 2000, and FIG. 10 shows an enlarged view of the same side as FIG. 9 of the upper part of the second measuring device 2000. In addition, FIG. 11 shows another side of the upper part of the second measuring equipment 2000 rotated 90° with respect to FIG. 10 on a plane, and FIG. 12 shows the opposite side with respect to FIG. 11. It shows another side of the top of the second measurement facility (2000). Additionally, FIG. 13 shows a plan view of the upper part of the second measurement equipment 2000, and FIG. 14 shows an enlarged view of the third disconnector 2300 of the second measurement equipment 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 power supply process and resistance measurement process. It is a facility placed adjacent to the side. This second measurement equipment 1000, as shown in FIGS. 9 to 14, includes second disconnectors 2100 and 2200, third disconnectors 2300, connection portion 2400, and second motors 2500a and 2500b. , it may include a third motor (2500c), second driving units (2600a, 2600b), a third driving unit (2600c), and a second support body (2700).

At this time, the second disconnectors 2100 and 2200 may include a 2-1 disconnector 2100 and a 2-2 disconnector 2200, and the second motors 2500a and 2500b may include a 2-1 motor 2500a. ) and a 2-2 motor (2500a), and the second driving units (2600a, 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 third disconnector 2300 are devices that open and close the electric circuit in a no-load state, and are each provided in plural numbers. In particular, the 2-1 disconnector 2100, the 2-2 disconnector 2200, and the third disconnector 2300 are connected to the secondary terminal 101 of the transformer 100 during the power supply process and resistance measurement process depending on whether they are opened or closed. ) can support switching for connections 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 during the power supply process and resistance measurement process depending on whether it is opened or closed. Switching can be supported. In addition, the third disconnector 2300 switches the connection between the secondary terminal 102 of the transformer 100 and the winding resistance meter 4000 during the power supply process and resistance measurement process depending on whether the third disconnector 2300 is opened or closed, and the transformer 100 ) can support switching for the connection between the secondary terminal 102 and the primary terminal 101.

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

Specifically, one 2-1 disconnector 2100 is capable of moving (or rotating) with a primary contactor 2101, which is a contact terminal, and a secondary contactor 2102, which is another contact terminal. Accordingly, 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 can move (or rotate) with the primary contactor 2201, which is a contact terminal, and the secondary contactor 2202, which is another contact terminal, and 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 can move (or rotate) 1 according to the movement (or rotation). 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, 2301) and secondary contactors (2201, 2202, 2302) of the 2-1 disconnector (2100), the 2-2 disconnector (2200), and the third disconnector (2300) are electrically connected. Each may include a conductive part through which electricity can 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 at the insulator, and each contact moving part (2103, 2203, 2302) is exposed to the 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 portion 2104 of the 2-1 disconnector 2100 moves according to the rotational movement of the 2-1 motor 2500a, and this support portion 2104 ), the contact movable part 2103 of the 2-1 disconnector 2100 connected to the support part 2104 moves (or rotates). As a result, according to the movement (or rotation) of the contact movable part 2103 of the 2-1 disconnector 2100, the distance 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 connect the 2-1 disconnector 2100. The space 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 to connect the 2-1 disconnector 2100. The primary contactor 2101 and the secondary contactor 2102 may be connected (closed).

In addition, when the 2-2 motor 2500b is driven, the support portion 2204 of the 2-2 disconnector 2200 moves according to the rotational movement of the 2-2 motor 2500b, and this support portion 2204 ), the contact movable part 2203 of the 2-2 disconnector 2200 connected to the support part 2204 moves (or rotates). As a result, according to the movement (or rotation) of the contact movable part 2203 of the 2-2 disconnector 2200, the distance 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 connect the 2-2 disconnector 2200. The space 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 to connect the 2-2 disconnector 2200. The primary contactor 2201 and the secondary contactor 2202 may be connected (closed).

In addition, when the third motor 2500c is driven, the support portion 2304 of the third disconnector 2300 moves according to the rotational movement of the third motor 2500c, and the support portion 2304 moves according to the movement of the support portion 2304. The contact movable part 2303 of the third disconnector 2300 connected to 2304 moves (or rotates). As a result, as the contact movable portion 2303 of the third disconnector 2300 moves (or rotates), the primary contactor 2301 and the secondary contactor 2302 of the third disconnector 2300 are closed. ) or can be 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 to contact 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 to contact the primary contactor 2301 of the third disconnector 2300. ) and the secondary contactor 2302 may be connected (closed).

The 2-1 driving unit 2600a, the 2-2 driving unit 2600b, and the third driving unit 2600c communicate with the control facility 5000 to operate the 2-1, 2-2, and third motors 2500a, 2500b. , 2500c). That is, the 2-1 driving unit 2600a transfers the driving current to the 2-1 motor 2500a according to the control signal received from the control equipment 5000, and the 2-2 driving unit 2600b transmits the driving current to the control equipment ( A driving current is transmitted to the 2-2 motor 2500b according to the control signal received from 5000). Additionally, the third driving unit 2600c transmits a driving current to the third motor 2500b according to the control signal received from the control facility 5000.

For example, when a third control signal for blocking (open) of the 2-1 disconnector 2100 is received from the control equipment 5000, the 2-1 driver 2600a operates the 2-1 motor 2500a. By applying a driving current for rotation 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 is opened. You can. When the fourth control signal for the connection (closed) of the 2-1 disconnector 2100 is received from the control equipment 5000, the 2-1 driving unit 2600a moves the 2-1 motor 2500a in the other direction. By applying a driving current for rotation to the 2-1 motor (2500a), the primary contactor 2101 and the secondary contactor 2102 of the 2-1 disconnector 2100 can be connected (closed). there is.

In addition, when the fifth control signal for blocking (open) of the 2-2 disconnector 2200 is received from the control equipment 5000, the 2-2 driver 2600b operates the 2-2 motor 2500b. By applying a driving current for rotation 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 is opened. You can. When the sixth control signal for the connection (closed) of the 2-2 disconnector 2200 is received from the control equipment 5000, the 2-2 driving unit 2600b moves the 2-2 motor 2500b in the other direction. By applying a driving current for rotation to the 2-2 motor (2500b), the primary contactor 2201 and the secondary contactor 2202 of the 2-2 disconnector 2200 can be connected (closed). there is.

In addition, when the seventh control signal for blocking (open) of the third disconnector 2300 is received from the control equipment 5000, the third driving unit 2600c drives the third motor 2500c to rotate in one direction. By applying current to the third motor 2500c, the space between the primary contactor 2301 and the secondary contactor 2302 of the third disconnector 2300 can be opened. When the eighth control signal for the connection (closed) of the third disconnector 2300 is received from the control equipment 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 can be connected (closed).

The 2-1, 2-2, and 3rd driving units (2600a, 2600b, 2600c) determine the current state, that is, the closed or open state, of each disconnector (2100, 2200, 2300) and provide information about it. A signal can be transmitted to the control facility 5000. That is, the 2-1 driver 2600a can determine the current state of the 2-1 disconnector 2100 and transmit a signal about it to the control facility 5000, and the 2-2 driver 2600b can detect the current state of the 2-1 disconnector 2100. -2 The current state of the disconnector (2200) can be determined and a signal for this can be transmitted to the control facility (5000). In addition, the third driving unit 2600c can determine the current state of the third disconnector 2300 and transmit a signal about this to the control facility 5000,

For example, the 2-1, 2-2, and third driving units (2600a, 2600b, 2600c) are connected to each disconnector (2100, 2200, 2300) through a separate sensor that detects whether each disconnector (2100, 2200, 2300) is open or closed. 2300), or the current state of each disconnector (2100, 2200, 2300) can be determined based on the recent or current driving state of each motor (2500a, 2500b, 2500c). In particular, the 2-1, 2-2, and third driving units (2600a, 2600b, and 2600c) drive each motor (2500a, 2500b, and 2500c) according to the third to eighth control signals, respectively, and then obtain the results. A signal can 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, 2100c) may be provided, and a plurality of 2-2 disconnectors (2200a, 2200b, 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 busbars (2411, 2412, 2413, 2414, 2415). can be connected

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

Additionally, each array structure 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 array structure (AC1, AC2, AC3), the primary contactors (2101a, 2101b, 2101c) of the 2-1 disconnectors (2100a, 2100b, 2100c) are connected to each other through the second busbar (2412). Can be electrically connected, and the secondary contactors (2102a, 2102b, 2102c) of the 2-1 disconnectors (2100a, 2100b, 2100c) can be electrically connected to each other through the third busbar 2413, and the second -2 Secondary contactors (2202a, 2202b, 2202c) of the disconnectors (2200a, 2200b, 2200c) may be connected to the fourth busbar (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 busbar 2415.

These busbars (2411, 2412, 2413, 2414, 2415) are used to protect the secondary terminal 102 from short circuiting of the secondary terminal 102 of the transformer 100 when the transformer 100 is an (ultra) high voltage transformer. This corresponds to a connection configuration to respond to (ultra) high pressure output. That is, each end 2412', 2413', 2414', and 2415' extending from the second to fifth busbars 2412, 2413, 2414, and 2415 is connected to each secondary terminal 102 of the transformer 100. It is an electrically connected configuration, and is designed to electrically connect the 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 as a structure where multiple bars are connected rather than as a single bar. 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 are connected to the secondary terminals 102 of the transformer 100. Can be optionally connected to .

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

However, hereinafter, for convenience of explanation, each end (2412', 2413', 2414) of the second to fourth busbars (2412, 2413, 2414) with respect to the three secondary terminals 102 of the transformer 100 '), each of the secondary terminals 102 is electrically connected to each other one by one. However, the present invention is not limited thereto.

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

Meanwhile, during the power supply process, the secondary terminals 101 of the transformer 100 must be connected to each other in a short-circuit state. For this, the 2-1 and 2-2 motors (2-1) are connected according to the fourth and sixth control signals. 2500a and 2500b) may be driven to close the 2-1st and 2-2nd disconnectors 2100 and 2200 of each array structure (AC1, AC2, AC3). Conversely, in the process of measuring resistance, the secondary terminals 101 of the transformer 100 must be in a blocked state in which the connection between them is disconnected. For this, the 2-1 and 2-1 according to the third and fifth control signals 2 The motors 2500a and 2500b are driven to open the 2-1st and 2-2nd disconnectors 2100 and 2200 of each array structure (AC1, AC2, and AC3).

In particular, in the present invention, the secondary terminals 102 of the transformer 100 are electrically connected one by one through each end (2412', 2413', 2414') of the second to fourth busbars (2412, 2413, 2414). As it is implemented in a way that it is connected, a plurality of array structures (AC1, AC2, AC3) can be selectively provided according to the output current size of the secondary terminals of the transformer 100. That is, in the power supply process, when the secondary terminals 101 of the transformer 100 are short-circuited, a plurality of array structures (AC1, AC2, AC3) that act as short circuits according to the output current size 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 the power supply process, as shown in FIG. 15, the first array structure AC1 Only can 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 during the power supply process, as shown in FIG. 16, the first and second array 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 during the power supply process, as shown in FIG. 17, the first to third arrays Structures (AC1, AC2, AC3) may be provided. In other words, as the number of array structures provided increases, it becomes possible to withstand a higher voltage power source due to a more complex connection structure between the array structures.

Each disconnector (2100, 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, 2500b). That is, when the 2-1 and 2-2 motors 2500a and 2500b are driven according to the third and fifth control signals, in FIGS. 15(a), 16(a), and 17(a) As shown, the plurality of 2-1 and 2-2 disconnectors 2100 and 2200 may be blocked (open), respectively. In addition, when the 2-1 and 2-2 motors 2500a and 2500b are driven according to the fourth and sixth control signals, in FIGS. 15(b), 16(b), and 17(b) As shown, the plurality of 2-1 and 2-2 disconnectors 2100 and 2200 may be respectively connected (closed).

Likewise, the plurality of third disconnectors 2300a, 2300b, and 2300c may all be opened and closed in the same state according to the 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), a plurality of third disconnectors 2300a , 2300b, 2300c) can each be blocked (open). 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) can each be connected (closed).

In particular, if the transformer 100 is an ultra-high voltage transformer and must withstand power of more than 30KV and more than 3000A when disconnected between its secondary terminals 102, it may be desirable to have at least a plurality of array structures, and at least three. It may be most desirable to have the above. However, for convenience of explanation, hereinafter, a circuit diagram will be provided assuming that the first to third array structures AC1, AC2, and AC3 are provided, but the present invention is not limited thereto.

It may be desirable for the second support 2700 to be implemented as a movable type for convenience of movement. To this end, the second measurement equipment 2000 may further include a moving unit 2800 for moving the second support 2700. For example, the moving unit 2800 includes a wheel disposed below the second support 2700, and may further include a moving motor that provides power for moving the wheel. Additionally, a remote controller may be additionally provided to operate the moving motor or control the horizontal movement of the wheels (e.g., adjusting the east, west, south, south, and south movements).

Additionally, the second support 2700 may have a fixed height or a variable height whose height can be adjusted. If the second support 2700 has a variable shape, not only can the horizontal movement of the second support 2700 be adjusted according to the user's operation of the remote controller, but its height can also be adjusted by a hydraulic motor or the like. Additionally, the second measurement facility 2000 may be implemented with a lift outrigger 2900 to prevent the facility from falling.

Figure 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 the power supplied to the primary side of the transformer 100 during the power supply process. At this time, the abnormal state may include an abnormal current state in which a current (overcurrent) exceeding the standard value flows on the primary side of the transformer 100, and an abnormal temperature state in which the temperature of the transformer 100 is above the standard 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 the power supply 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 transformer (100) in the power supply process. ), it is possible to detect whether abnormal current and abnormal temperature conditions occur based on the measured current and temperature.

Specifically, a current transformer (CT) 3100 is installed on each power line connected to the primary terminal 101 of the transformer 100 and detects the current value flowing in the corresponding power line. For example, the current transformer 3100 may be a measuring current transformer that is normally used in a normal load state and is 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, 3100c) are provided to correspond, and each is connected to the power line of the primary terminal 101 of each phase of the transformer 100. is installed in The current transformer 3100 is connected to the ammeter 3200 and transmits the signal of the current value detected by the current transformer 3100 to the ammeter 3200.

The ammeter 3200 measures the current for the 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 during the power supply process. Of course, when three-phase power is input to the transformer 100 and three current transformers (3100a, 3100b, 3100c) are provided, three ammeters (3200a, 3200b, 3300c) are provided to correspond, each measuring the transformer (100). ) Measure the current on the power line of the primary terminal 101 of each phase. The ammeter 3200 is connected to the monitoring unit 3500 and transmits the signal of the current data measured by the ammeter 3200 to the monitoring unit 3500.

The temperature sensor 3300 is installed inside or outside the transformer 100 and detects the temperature according to the heat generated in the transformer 100. There may be a plurality of temperature sensors 3300, and the sensed sensor value is transmitted 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 measures the temperature of the transformer 100 during the power supply process using the sensor value of the temperature sensor 3300. For example, the thermometer 3400 may be a digital thermometer that transmits measured temperature data to the monitoring unit 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 that monitors whether an abnormal condition occurs in the transformer 100. That is, the monitoring unit 3500 can use the current value transmitted from the current transformer 3100 to monitor the occurrence of an abnormal current state in the power supplied to the transformer 100 during the power supply process. Additionally, the monitoring unit 3500 can monitor the occurrence of abnormal temperature conditions in the transformer 100 during the power supply process using temperature data transmitted from the thermometer 3400.

When an abnormal condition occurs, the monitoring unit 3500 generates an alarm signal and can transmit the alarm signal to other devices or facilities. For example, the monitoring unit 3500 may transmit the corresponding alarm signal to a power control unit (not shown) that controls the power supply to the primary side of the transformer 100. When such an alarm signal is transmitted, the power supplied to the primary side of the transformer 100 may be cut off according to the 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 PLC (Programmable Logic Controller) 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 each be 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.

Figure 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 that measures the winding resistance between the primary and secondary sides of the transformer 100 during the resistance measurement process.

For example, referring to Figure 19, two power terminals, two high voltage measurement terminals for measuring the resistance of a relatively high voltage measurement target, and two terminals for measuring the resistance of a relatively low voltage measurement target. Each may include two low-voltage measurement terminals.

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 one-dot chain line) is connected to each high voltage measurement terminal, and during the resistance measurement process, the voltage between the two high voltage measurement lines for measuring the winding resistance of the transformer 100 is measured in the winding resistance meter 4000. It 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 during the resistance measurement process is measured by a winding resistance meter (4000). ) can be measured at .

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

Next, the control equipment 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 power supply process and resistance measurement process. 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 control unit 5100 is a component that receives a user's input (command) for switching control, and may be provided with one or more. That is, the user can input input for connection switching according to the power supply process and resistance measurement process through the auxiliary control unit 5100. Additionally, the auxiliary control unit 5100 is connected to communicate with the main control unit 5200 and can transmit a user's input (command) signal to the main control unit 5100.

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

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

For reference, in Figure 10, the main control unit 5200 and one auxiliary control unit 5100 are shown as installed on the second support 2700 of the second measurement equipment 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 travel distance is bound to increase, and the user's convenience of access for connection switching control is required accordingly. You 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 be capable of controlling horizontal movement. It may be provided on the first support 1400 or the second support 2700, and in this case, the user's convenience in accessing the auxiliary control unit 5100 can be improved.

The main control unit 5200 overall controls connection switching according to the power supply process and resistance measurement process. That is, the main control unit 5200 controls the first to third motors 1200, 2500a, 2500b, and 2500c in the power supply process and resistance measurement process according to the user's input to connect the first to third disconnectors 1100, 2100, A control signal can be generated to control connection (closed) or blocking (open) of (2200, 2300).

However, the user's input for controlling such connection switching may not only be transmitted through the auxiliary control unit 5100, but may also be made directly in the main control unit 5200 equipped with an input means. That is, the user can input connection switching according to the power supply process and resistance measurement process 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 the user's input and transmits it to the first to third driving units 1300, 2500a, 2500b, and 2500c.

For example, when the user's input is input (transmitted) according to the power supply process, the main control unit 5200 transmits the first and seventh control signals to the first and third driving units 1300 and 2500c, respectively, and the fourth and fourth 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 blocked (open) and the remaining second disconnectors 2100 , 2200) can be controlled to be connected (closed).

Conversely, when the user's input according to the resistance measurement process is input (transmitted), the main control unit 5200 transmits 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 connected (closed) and the remaining second disconnectors 2100 , 2200) can be controlled to be blocked (open).

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

At this time, the display panel may be composed of a non-emissive panel or an emissive panel. For example, display panels include liquid crystal displays (LCDs), light emitting diode (LED) displays, organic LED (OLED) displays, and micro electro mechanical systems (MEMS). ) display, or electronic paper display, etc., but is not limited thereto.

For example, the main control unit 5200 may be implemented as a PLC (Programmable Logic Controller) 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 can be input to the input unit of the PLC device, and the first to third driving units 1300, 2500a, 2500b, and 2500c are It can be connected to the output of a PLC device. Additionally, lines for transmitting status 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.

Figure 21 shows a flowchart 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. The method according to an embodiment of the present invention may include steps S101 to S103, as shown in FIG. 21.

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

Additionally, in S101, electrical connection (i.e., line connection) is performed between the transformer 100 and each facility 1000 and 2000. That is, the transformer 100, the first disconnector 1100 of the first measurement equipment 1000, the second and third disconnectors 2100, 2200, 2300 of the second measurement equipment 2000, and a winding resistance meter. Line connection can be performed for each of (4000).

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

First, the windings on the primary side of the transformer 100 may have a Y wiring structure, and the secondary windings may have a delta wiring 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 are made to enable voltage measurement on the primary and secondary sides of the transformer 100, so that a plurality of At least one of the first disconnectors (1100a, 1100b, 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, 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 (i.e., measurement on the primary side of the transformer), first disconnectors 1100a, 1100b, 1100c ) secondary contactors (1102a, 1102b, 1102c) are connected to the first power 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, 1101c) of the 1-2 disconnector (1100b) and the 1-3 disconnector (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 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 is connected to the first power terminal and the first high voltage measurement terminal, respectively. The primary contactor 1102b is connected to the second high voltage measurement terminal of the winding resistance meter 4000.

In particular, when measuring winding resistance in S103, a jumper line is connected to supply power to the secondary side of the transformer 100. That is, at least one other secondary contactor among the plurality of first disconnectors (1100a, 1100b, 1100c) is connected to the 3-1 disconnector (2300c) among the plurality of third disconnectors (1100a, 1100b, 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, line connection is performed to enable voltage measurement on the secondary side of the transformer 100 when measuring winding resistance in S103.

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, 2300b, and 2300c are connected to the secondary terminal 102 of the transformer 100. Among the disconnectors (2300a, 2300b, 2300c), except for the 3-1 disconnector (2300a), at least one primary and secondary contactor is connected to the winding resistance meter (4000) and the secondary terminal (102) of the transformer (100). Each is connected.

Specifically, in the plurality of third disconnectors (2300a, 2300b, 2300c), the primary contactors (2301a, 2301c) of the 3-1 disconnector (2300a) and the 3-3 disconnector (2300c) are the first contactors of the transformer (100). It is connected to the secondary terminal (102b) of the two phases, 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, in order to supply power for driving the winding resistance meter 4000 in S103 and measure the low voltage of the winding resistance meter 4000 (i.e., measure 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.

Meanwhile, line connection is also performed to enable switching so that the secondary terminals 102a, 102b, and 102c of the transformer 100 become short-circuited at S102 and open at 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 such a manner that the 2-1 disconnector 2100 and the 2-2 disconnector 2200 are connected to the first busbar. Implement multiple structures (AC1, AC2, AC3). At this time, in the plurality of array structures (AC1, AC2, AC3), the primary contactors (2101a, 2101b, 2101c) of the 2-1 disconnectors (2100a, 2100b, 2100c) are connected to the second busbar, and the second -1 The secondary contactors (2102a, 2102b, 2102c) of the 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, 2202c) of the 2-2 disconnectors (2200a, 2200b, 2200c) are connected to the fourth busbar. Accordingly, the three-phase secondary terminals 102a, 102b, and 102c of the transformer 100 are each connected to the second to fourth busbars one by one.

Next, S102 is the 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 short-circuited according to the control signal from the main control unit 5200, and the primary terminals 101 of the transformer 100 are short-circuited. Power is supplied to each of the three phases.

That is, the plurality of first disconnectors (1100a, 1100b, 1100c) and the plurality of third disconnectors (2300a, 2300b, 2300c) of the transformer 100 are opened and connected to measure the winding resistance of the transformer 100. This is released. Additionally, the plurality of second disconnectors 2100 and 2200 are connected (closed) so that the secondary terminals 102a, 102b, and 102c of the transformer 100 are short-circuited.

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

In this state, three-phase power having a current that compensates for the 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 (for example, 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, three-phase power having a current corresponding to the load condition is applied to the primary terminals 101 of the transformer 100 for approximately one 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 terminals of the transformer 100 are turned on according to a control signal from 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. Afterwards, the winding resistance of the transformer 100 is measured in this state.

That is, the plurality of first disconnectors (1100a, 1100b, 1100c) and the plurality of third disconnectors (2300a, 2300b, 2300c) of the transformer 100 are connected (closed) to measure the winding resistance of the transformer 100. This is implemented. In addition, the plurality of second disconnectors 2100 and 2200 are opened, thereby releasing the secondary terminals 102a, 102b, and 102c of the transformer 100 from being short-circuited.

Specifically, when the user's input according to the resistance measurement process is input (transmitted), 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 delivered to the first and third driving units 1300 and 2600c, respectively, and a third and fifth control signal is generated and delivered to the 2-1 and 2-2 driving units 2600a and 2600b, respectively. do. Accordingly, the first and third disconnectors (1100, 2300) are connected (closed) and the remaining second disconnectors (2100, 2200) are blocked (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 and secondary sides of the transformer 100 is established. It comes true.

Accordingly, as power is supplied to the power terminal of the winding resistance meter 4000, the winding resistance meter 4000 is driven, and the primary resistance of the transformer 100 is increased through the two high voltage measurement terminals of the winding resistance meter 4000. The secondary resistance of the transformer 100 can be measured through the two low-voltage measurement terminals of the winding resistance meter 4000. Additionally, the temperature of the transformer 100, that is, the temperature of the windings and insulators (oil, etc.), can be predicted based on the winding resistance measured by the winding resistance meter 4000.

The present invention configured as described above can not only implement automation technology for temperature rise testing of transformers, but can also be applied to (ultra) high-voltage transformers while satisfying switching conditions and time conditions. There are benefits to this. In other words, the present invention has the advantage of being able to quickly, accurately and safely perform the switching of various connections between the transformer and the winding resistance meter required in the power supply process and resistance measurement process during the temperature rise test of the transformer with a minimum number of people.

In the detailed description of the present invention, specific embodiments have been described, but of course, 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, but should be defined by the claims described below and equivalents to these claims.

10: System 100: Transformer
101: primary terminal 102: secondary terminal
1000: first measuring equipment 1100: first disconnector
1101, first contactor 1102: second contactor
1200: first motor 1300: first driving unit
1400: first support 1500: moving part
2000: second measuring device 2100, 2200: second disconnector
2300: third disconnector 2400: connection part
2500a, 2500b: 2nd motor 2500c: 3rd motor
2600a, 2600b: second driving unit 2600c: third driving unit
2700: second support 2800: moving part
2900: Outrigger 3000: Surveillance equipment
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 when the secondary terminals of the transformer are short-circuited, and the winding resistance of the transformer is measured in a state where the 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 arranged adjacent to the primary terminal of the transformer and connected (closed) or opened (open) between the primary contactor and the secondary contactor according to the driving of the first motor;
a plurality of second disconnectors disposed adjacent to the secondary terminal of the transformer and connected (closed) or open (open) between the primary contactor and the secondary contactor according to the driving of the second motor;
a plurality of third disconnectors disposed adjacent to the secondary terminal of the transformer and connected (closed) or open (open) between the primary contactor and the secondary contactor according to the driving of the third motor; and
It includes a main control unit that controls the first to third motors in the power supply process and the resistance measurement process according to the user's input to control the connection (closed) or blocking (open) of the first to third disconnectors. And
To measure 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 measuring device, and at least one of the plurality of third disconnectors is connected to the secondary terminal of the transformer. It is connected between winding resistance meters,
To implement a short circuit state of the secondary terminals of the transformer, the plurality of second disconnectors are connected to the secondary terminals of the transformer,
The plurality of second disconnectors implement a plurality of array structures in which the 2-1 disconnector and the 2-2 disconnector are connected to the first busbar,
In the plurality of array structures, the primary contactors of the 2-1 disconnectors are connected to the second busbar, and the secondary contactors of the 2-1 disconnectors or the primary contactors of the 2-2 disconnectors are connected to the third busbar. The secondary contactors of the 2-2 disconnectors are connected to the fourth busbar,
A system in which the secondary terminals of the three phases of the transformer are connected one by one to the second to fourth busbars.
delete According to paragraph 1,
A system in which the number of the plurality of array structures acting as a short-circuit varies depending on 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 paragraph 1,
Primary contactors of the plurality of first disconnectors are connected to primary terminals of the transformer, and at least one secondary contactor of the plurality of first disconnectors is connected to a winding resistance meter. At least one other secondary contactor is 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 the primary and secondary contactors of at least one of the plurality of third disconnectors excluding the 3-1 disconnector are connected to a winding resistance meter. and a system each connected to the secondary terminal of the transformer.
According to clause 4,
A system in which the windings on the primary side of the transformer have a Y connection structure, and the windings on the secondary side of the transformer have a delta connection structure.
According to clause 5,
In the power supply process, 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 contactor of the 1-1 disconnector is connected to the primary terminal of the second phase of the transformer, and the primary contactors of the 1-2 disconnector and the 1-3 disconnector are connected to the primary terminal of the second phase of the transformer. It is connected to the primary terminal of the neutral point, and the secondary contactor of the 1-1 disconnector is connected to the first power terminal and the first high voltage measurement terminal of the winding resistance meter, respectively, and the secondary contactor of the 1-2 disconnector is connected to the winding resistance It is connected to the second high voltage measurement terminal of the measuring instrument, and the secondary contactor of the 1-3 disconnector is connected to the secondary contactor of the 3-1 disconnector through a jumper line,
In the plurality of third disconnectors, the primary contactor of the 3-1 disconnector and the 3-3 disconnector is connected to the secondary terminal of the second phase of the transformer, and the primary contactor of the 3-2 disconnector is connected to the secondary terminal of the transformer. It is connected to the secondary terminal of the third phase, and the secondary contactor of the 3-2 disconnector is connected to the second power terminal and the first low voltage measurement terminal of the winding resistance meter, respectively, and the secondary contactor of the 3-3 disconnector is connected to the winding resistance meter. A system connected to the second low-voltage measurement terminal of a resistance meter.
According to paragraph 1,
Monitor the abnormal current state of the power supplied to the transformer during the power supply process based on the current value of the current transformer (CT) connected to each primary terminal of the transformer, and based on the sensor value of the temperature sensor installed in the transformer. The system further includes a monitoring facility that monitors abnormal temperature conditions of the transformer during the power supply process.
In clause 7,
A system in which the monitoring equipment transmits an alarm signal to a power control unit that controls the supply of power when the abnormal current condition or the abnormal temperature condition occurs.
According to paragraph 1,
a first supporter supporting the plurality of first disconnectors; and
A system further comprising a second support supporting the plurality of second and third disconnectors.
According to clause 9,
A system in which the first and second supports are implemented to be movable.
According to clause 10,
A system in which at least one of the first and second supports can be adjusted in height and horizontal movement through a remote controller.
According to clause 9,
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 from the main control unit;
a second driving unit connected to the main control unit and installed on the second support to drive the second motor according to a control signal from the main control unit; and
a third driving unit connected to the main control unit and installed on the second support to drive the third motor according to a control signal from the main control unit;
A system further comprising:
According to paragraph 1,
A signal for the connection or disconnection state of the first to third disconnectors is connected to the main control unit, receives the user's input and transmits it to the main control unit, and is transmitted to the main control unit through the first to third driving units. A system further comprising a display panel that receives and displays from the main control unit.
According to paragraph 1,
During the power supply process, the plurality of first disconnectors and the plurality of third disconnectors are blocked (open) and disconnected for measuring the winding resistance, and at least a portion of the plurality of second disconnectors are connected (closed). ), the secondary terminals of the transformer become short-circuited,
In the resistance measurement process, the plurality of first disconnectors and the plurality of third disconnectors are connected (closed) to implement connection for measuring the winding resistance, and the plurality of second disconnectors are blocked (open) A system in which the secondary terminals of a transformer are released from a short circuit.
The power supply process in which three-phase power is supplied to each of the primary terminals of the transformer when the secondary terminals of the transformer are short-circuited, and the winding resistance of the transformer is measured while the power supply to each primary terminal is cut off. A system for performing a transformer temperature rise test that includes a resistance measurement process,
A plurality of first disconnectors are opened in the power supply process and connected (closed) in the resistance measurement process according to the driving of the first motor, and a first supporter supporting each of the first disconnectors, a first measurement facility disposed adjacent to the primary terminal of the transformer;
A plurality of second disconnectors, at least some of which are connected (closed) in the power supply process according to the driving of the second motor and all of which are blocked (open) in the resistance measurement process, and the power supply process according to the driving of the third motor A plurality of third disconnectors are blocked (open) and connected (closed) during the resistance measurement process, and a second supporter supporting the second and third disconnectors, adjacent to the secondary terminal of the transformer. a second measuring facility arranged; and
It includes a main control unit that controls the connection or disconnection of the first to third disconnectors by controlling the first to third motors in the power supply process and the resistance measurement process according to the user's input,
To measure 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 measuring device, and at least one of the plurality of third disconnectors is connected to the secondary terminal of the transformer. It is connected between winding resistance meters,
To implement a short circuit state of the secondary terminals of the transformer, the plurality of second disconnectors are connected to the secondary terminals of the transformer,
The plurality of second disconnectors implement a plurality of array structures in which the 2-1 disconnector and the 2-2 disconnector are connected to the first busbar,
In the plurality of array structures, the primary contactors of the 2-1 disconnectors are connected to the second busbar, and the secondary contactors of the 2-1 disconnectors or the primary contactors of the 2-2 disconnectors are connected to the third busbar. The secondary contactors of the 2-2 disconnectors are connected to the fourth busbar,
A system in which the secondary terminals of the three phases of the transformer are connected one by one to the second to fourth busbars.
A plurality of disconnectors that are connected (closed) or blocked (open) according to the driving of the motor, and a main control unit that controls the connection (closed) or blocking (open) of the plurality of disconnectors by controlling the motor according to the user's input. A temperature rise test method for a transformer performed using a system comprising:
A power supply step of supplying three-phase power to the primary terminals of the transformer when the secondary terminals of the transformer are short-circuited; and
It includes a resistance measurement step of measuring the winding resistance of the transformer in a state where the power supply to each primary terminal is cut off,
In the power supply step, a plurality of first disconnectors disposed adjacent to the primary terminal of the transformer and a plurality of third disconnectors disposed adjacent to the secondary terminal of the transformer are blocked (open) to measure the winding resistance. The connection for is released, and at least a portion of a plurality of second disconnectors disposed adjacent to the secondary terminal of the transformer are connected (closed) so that the secondary terminals of the transformer are short-circuited,
In the resistance measurement step, the plurality of first disconnectors and the plurality of third disconnectors are connected (closed) to implement connection for measuring the winding resistance, and the plurality of second disconnectors are blocked (open) to connect the transformer. Including a step in which the secondary terminals of are released from the short-circuit state,
The plurality of second disconnectors implement a plurality of array structures in which the 2-1 disconnector and the 2-2 disconnector are connected to the first busbar,
In the plurality of array structures, the primary contactors of the 2-1 disconnectors are connected to the second busbar, and the secondary contactors of the 2-1 disconnectors or the primary contactors of the 2-2 disconnectors are connected to the third busbar. The secondary contactors of the 2-2 disconnectors are connected to the fourth busbar,
A method in which the secondary terminals of the three phases of the transformer are each connected to the second to fourth busbars one by one.