Method and apparatus for detecting termining transformer temperature

Abstract

The present invention relates to a transformer temperature sensing device and method. A transformer temperature sensing device according to one embodiment of the present invention comprises: an electrical signal sensing unit for detecting and outputting an electrical signal corresponding to a temperature change of a transformer using the Seebeck effect; a processor for converting the electrical signal detected by the electrical signal sensing unit into a transformer temperature value; and a display unit for displaying the transformer temperature value converted by the processor so as to be visually verifiable.

Description

Technology Field

[0001] The present invention relates to a transformer temperature sensing device and method, and more specifically, to a transformer temperature sensing device and method installed on a pole-mounted transformer or a ground-mounted transformer to enable a manager to visually check electrical signals according to changes in the transformer's temperature, thereby preventing transformer accidents in advance. Background Technology

[0002] Recently, transformers have been increasing in capacity and voltage alongside the rise in electricity demand. Since accidents in such transformers have widespread ripple effects and cause immense economic losses and psychological distress, the need for transformer accident prevention is increasing.

[0003] Therefore, a separate distribution panel is installed for distribution transformers to check the load status, and voltmeters, ammeters, and power meters are attached to the panel to verify the load. However, transformers are used separately from the distribution panel for safety or operational reasons.

[0004] However, when using multiple transformers, it is difficult to individually check the details, or status information, of each transformer; furthermore, constructing separate facilities such as switchboards is not only complex but also incurs additional costs.

[0005] In addition, there are many transformers that are difficult to check with measuring instruments due to limited space, so they are often not easily visible to the naked eye.

[0006] Accordingly, there is a need for a method that allows the overall operating status of transformers to be checked visually, as well as inspected safely and conveniently. Prior art literature

[0007] Korean Registered Patent Publication No. 10-1908921 (Registered on Oct. 11, 2018) The problem to be solved

[0008] The objective of the present invention is to provide a transformer temperature sensing device and method for preventing transformer accidents in advance by installing them on a pole-mounted transformer or a ground-mounted transformer to enable a manager to visually check electrical signals according to temperature changes of the transformer. means of solving the problem

[0009] A transformer temperature sensing device according to one embodiment of the present invention may include: an electrical signal sensing unit for detecting and outputting an electrical signal according to a temperature change of a transformer using the Seebeck effect; a processor for converting the electrical signal detected by the electrical signal sensing unit into a transformer temperature value; and a display unit for displaying the transformer temperature value converted by the processor so as to be visually confirmed.

[0010] The above electrical signal detection unit may form a circuit by joining a first metal constituting a transformer and a second metal different from the first metal, and may form a hot junction where the first metal and the second metal are in contact and a cold junction where the first metal and the second metal are open.

[0011] The first metal mentioned above may be formed on the surface of the transformer.

[0012] The first metal may be of the same metal material as the transformer, and may have the same width or length corresponding to the second metal.

[0013] The apparatus further includes a memory for storing an electrical signal and temperature value conversion table for converting an electrical signal detected by the electrical signal detection unit into a transformer temperature value; wherein the processor may check the transformer temperature value corresponding to the detected electrical signal in the electrical signal and temperature value conversion table.

[0014] The above transformer temperature value may be either the insulating oil temperature or the winding temperature.

[0015] The above processor may compare a preset threshold value with the transformer temperature value, and if the transformer temperature value is greater than or equal to the threshold value, display the transformer status as 'dangerous' through the display unit, and if the transformer temperature value is less than the threshold value, display the transformer status as 'safe' through the display unit.

[0016] The above display unit may be installed on the outside of a pole-mounted transformer or a ground-mounted transformer.

[0017] The device further includes a current sensing unit for detecting the current of a transformer and a voltage sensing unit for detecting the voltage of a transformer, wherein the processor may display the current and voltage of the transformer through the display unit.

[0018] In addition, a transformer temperature sensing method according to an embodiment of the present invention may include: a step of sensing an electrical signal using the Seebeck effect according to a change in transformer temperature while monitoring the transformer state; a step of converting the sensed electrical signal into a transformer temperature value; and a step of displaying the transformer state by comparing the transformer temperature value with a preset threshold value.

[0019] An electrical signal and temperature value conversion table for converting the detected electrical signal into a transformer temperature value is stored, and the conversion step may involve verifying the transformer temperature value corresponding to the detected electrical signal in the electrical signal and temperature value conversion table.

[0020] The above conversion step compares the pre-set threshold value with the transformer temperature value, and the above display step may display the transformer status as 'dangerous' if the transformer temperature value is above the threshold value, and display the transformer status as 'safe' if the transformer temperature value is below the threshold value.

[0021] In addition, a transformer temperature sensing device according to an embodiment of the present invention comprises at least one processor; and a memory for storing computer-readable instructions; wherein, when the instructions are executed by the at least one processor, the transformer temperature sensing device detects an electrical signal using the Seebeck effect according to a change in transformer temperature while monitoring the transformer state, converts the detected electrical signal into a transformer temperature value, and displays the transformer state by comparing the transformer temperature value with a preset threshold value. Effects of the invention

[0022] The present invention can be installed on a pole-mounted transformer or a ground-mounted transformer to enable a manager to visually check electrical signals resulting from changes in the transformer's temperature.

[0023] In addition, the present invention can be implemented at a low cost, has a simple structure, and allows for the rapid and easy visual diagnosis of the transformer status, such as transformer load, temperature, current, and voltage, even day and night. Brief explanation of the drawing

[0024] FIG. 1 is a drawing showing a single-line diagram of a power distribution line according to an embodiment of the present invention. FIG. 2 is a drawing of an electrical signal detection unit mounted on a transformer. FIG. 3 is a diagram showing the circuit of the electrical signal detection unit of FIG. 2. FIG. 4 is a drawing showing an example of a display. FIG. 5 is a drawing showing an example of a display mounted on a pole-mounted transformer. FIG. 6 is a drawing showing an example of a ground transformer equipped with a display. FIG. 7 is a diagram showing a transformer temperature sensing method according to an embodiment of the present invention. Specific details for implementing the invention

[0025] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, detailed descriptions of known functions or configurations that may obscure the essence of the present invention in the following description and the accompanying drawings are omitted. Additionally, it should be noted that identical components throughout the drawings are indicated by the same reference numerals whenever possible.

[0026] The terms and words used in the specification and claims described below should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention, based on the principle that the inventor can appropriately define terms to best describe his invention.

[0027] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention; thus, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application.

[0028] In the attached drawings, some components are exaggerated, omitted, or schematically depicted, and the size of each component does not entirely reflect its actual size. The present invention is not limited by the relative sizes or spacing depicted in the attached drawings.

[0029] Throughout the specification, when a part is described as "comprising" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. Furthermore, when a part is described as "connected" to another part, this includes not only cases where they are "directly connected" but also cases where they are "electrically connected" with other elements interposed between them.

[0030] A singular expression includes a plural expression unless the context clearly indicates otherwise. Terms such as "include" or "have" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0031] Additionally, the term “part” as used in the specification refers to hardware components such as software, FPGAs, or ASICs, and “parts” perform certain roles. However, “parts” are not limited to software or hardware. “Parts” may be configured to reside in addressable storage media or configured to run one or more processors. Thus, by example, “parts” include components such as software components, object-oriented software components, class components, and task components, as well as processors, functions, attributes, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables. The functions provided within the components and “parts” may be combined into a smaller number of components and “parts” or further separated into additional components and “parts.”

[0032] Embodiments of the present invention are described below with reference to the attached drawings so that those skilled in the art can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. Furthermore, in order to clearly explain the present invention in the drawings, parts unrelated to the explanation have been omitted, and similar parts throughout the specification are denoted by similar reference numerals.

[0033] Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings.

[0034] FIG. 1 is a drawing showing a transformer temperature sensing device according to an embodiment of the present invention, FIG. 2 is a drawing showing an electrical signal sensing unit mounted on a transformer, FIG. 3 is a drawing showing the circuit of the electrical signal sensing unit of FIG. 2, FIG. 4 is a drawing showing an example of display, FIG. 5 is a drawing showing an example of a display mounted on a pole-mounted transformer, and FIG. 6 is a drawing showing an example of a display mounted on a ground-mounted transformer.

[0035] As illustrated in FIG. 1, the transformer temperature sensing device (100) according to an embodiment of the present invention detects an electrical signal according to a temperature change of a transformer, such as a pole-mounted transformer or a ground-mounted transformer, using the Seebeck Effect, and converts the detected electrical signal into a transformer temperature value so that the transformer condition can be easily diagnosed visually.

[0036] Specifically, the transformer temperature sensing device (100) includes an electrical signal sensing unit (110), a current sensing unit (120), a voltage sensing unit (130), a processor (140), a memory (150), and a display unit (160).

[0037] The electrical signal detection unit (110) detects and outputs an electrical signal according to the temperature change of the transformer using the Seebeck effect.

[0038] Here, the Seebeck effect refers to the phenomenon in which an electromotive force is generated in a circuit formed by joining two different conductors, when there is a temperature difference between the two junctions that occur when joining the two different conductors.

[0039] Accordingly, after opening one of the two contacts, a potential difference (or current) can be detected at both ends of the two open conductors when there is a temperature difference between the contacts.

[0040] As shown in FIGS. 2 and 3, this electrical signal detection unit (110) forms a circuit by joining two different conductors, namely a metal (first metal) (111) that constitutes the transformer and a metal (second metal) (112) that is different from the metal that constitutes the transformer. In this case, the part (a) where the first metal (111) and the second metal (112) come into contact is a hot junction (or temperature measuring junction), and the part (b, b') where the first metal (111) and the second metal (112) are open is a cold junction (or reference junction).

[0041] Here, the first metal (111) may be the first metal constituting the transformer as shown in FIG. 2a, and may be the transformer surface, but is not limited thereto. It may be a configuration independent of the transformer surface, made of the same metal material as the transformer, and may have the same width or length corresponding to the second metal (112).

[0042] Additionally, an insulating member (113) may be placed between the first metal (111) and the second metal (112), and a protective member (not shown) that blocks electrical influence from the outside may be placed around the first metal (111) and the second metal (112) to provide protection.

[0043] In this way, the electrical signal detection unit (110) detects a temperature change in the first metal (111) according to the temperature change of the transformer, and accordingly, can detect an electrical signal at the open portion between the first metal (111) and the second metal (112), that is, at the cold junction.

[0044] Next, the processor (140) converts the electrical signal detected by the electrical signal detection unit (110) into a transformer temperature value. In this case, the processor (140) can check the transformer temperature value corresponding to the electrical signal detected by the electrical signal detection unit (110) using an electrical signal and temperature value conversion table previously stored in the memory (150). The transformer temperature value may be either the insulating oil temperature or the winding temperature.

[0045] Here, the electrical signal and temperature value conversion table is configured in advance with the correlation between the electrical signal detected through the electrical signal detection unit (112) and the corresponding transformer temperature value, and is stored in the memory (150).

[0046] The processor (140) compares the transformer temperature value with a preset threshold value, and if the transformer temperature value is above the threshold value, it displays the transformer status as 'dangerous' through the display unit (160), and if the transformer temperature value is below the threshold value, it displays the transformer status as 'safe' through the display unit (160).

[0047] In addition, the processor (140) displays the converted transformer temperature value through the display unit (160) as shown in FIG. 4 so that it can be visually checked. Furthermore, the processor (140) can display the transformer current value detected by the current detection unit (120) and the transformer voltage value detected by the voltage detection unit (130) through the display unit (160). Here, the display unit (160) can be installed on the outside of the pole-mounted transformer as shown in FIG. 5 or the ground-mounted transformer as shown in FIG. 6.

[0048] Meanwhile, the processor (140) may be at least one processor, and the memory (150) may store computer-readable instructions. The processor (140) executes the computer-readable instructions stored in the memory (150). This causes the transformer temperature sensing device (100) to execute the transformer temperature sensing method.

[0050] FIG. 7 is a diagram showing a transformer temperature sensing method according to an embodiment of the present invention.

[0051] Referring to FIG. 7, the transformer temperature sensing device (100) detects an electrical signal using the Seebeck effect according to the change in transformer temperature while monitoring the transformer condition (S210, S220).

[0052] Then, the transformer temperature sensing device (100) converts the detected electrical signal into a transformer temperature value (S230).

[0053] At this time, the transformer temperature detection device (100) compares the transformer temperature value with a preset threshold value, and if the transformer temperature value is greater than or equal to the threshold value, it indicates the transformer status as dangerous (S240, S250), and if the transformer temperature value is less than the threshold value, it indicates the transformer status as safe (S240, S260). In addition, the transformer temperature detection device (100) detects and displays the current and voltage of the transformer (S250, S260).

[0054] A method according to some embodiments may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc., either alone or in combination. The program instructions recorded on the medium may be those specifically designed and configured for the present invention, or they may be those known and available to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes; optical recording media such as CD-ROMs and DVDs; magneto-optical media such as floptical disks; and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, and flash memory. Examples of program instructions include machine code, such as that generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc.

[0055] Although the foregoing description has focused on the novel features of the invention applicable to various embodiments, those skilled in the art will understand that various deletions, substitutions, and modifications are possible in the forms and details of the apparatus and method described above without departing from the scope of the invention. Accordingly, the scope of the invention is defined by the appended claims rather than by the foregoing description. All variations within the equivalent scope of the claims are encompassed within the scope of the invention. Explanation of the symbols

[0056] 110 ; Electrical signal detection unit 120 ; Current detection unit 130 ; Voltage sensing unit 140 ; ​​Processor 150 ; Memory 160 ; Display

Claims

Claim 1 A transformer temperature sensing device comprising: an electrical signal sensing unit for detecting and outputting an electrical signal according to a temperature change of a transformer using the Seebeck effect; a processor for converting the electrical signal detected by the electrical signal sensing unit into a transformer temperature value; and a display unit for displaying the transformer temperature value converted by the processor so as to be visually confirmed; wherein the electrical signal sensing unit forms a circuit by joining a first metal and a second metal different from the first metal, and forms a hot junction where the first metal and the second metal come into contact and a cold junction where the first metal and the second metal are open, wherein the first metal is configured independently from the transformer surface, is made of the same metal material as the transformer, and has the same width or length corresponding to the second metal, wherein an insulating member is placed between the first metal and the second metal, and a protective member that blocks electrical influence from the outside is surrounded and protected on the outer side of the first metal and the second metal. Claim 2 delete Claim 3 A transformer temperature sensing device according to claim 1, wherein the first metal is formed on the surface of the transformer. Claim 4 delete Claim 5 A transformer temperature sensing device according to claim 1, further comprising: a memory for storing an electrical signal and temperature value conversion table for converting an electrical signal detected by the electrical signal detection unit into a transformer temperature value; wherein the processor checks the transformer temperature value corresponding to the detected electrical signal in the electrical signal and temperature value conversion table. Claim 6 In claim 5, the transformer temperature value is one of the insulating oil temperature or the winding temperature, a transformer temperature sensing device. Claim 7 A transformer temperature detection device according to claim 5, wherein the processor compares a preset threshold value with the transformer temperature value, and if the transformer temperature value is greater than or equal to the threshold value, displays the transformer status as 'dangerous' through the display unit, and if the transformer temperature value is less than the threshold value, displays the transformer status as 'safe' through the display unit. Claim 8 ◈Claim 8 was abandoned upon payment of the registration fee.◈ In Claim 1, the above-mentioned display unit is a transformer temperature sensing device installed on the outside of a pole-mounted transformer or a ground-mounted transformer. Claim 9 ◈Claim 9 was abandoned upon payment of the registration fee.◈ A transformer temperature sensing device according to Claim 8, further comprising a current sensing unit for sensing the current of a transformer and a voltage sensing unit for sensing the voltage of a transformer, wherein the processor displays the current and voltage of the transformer through the display unit. Claim 10 A transformer temperature sensing method comprising: a step of detecting an electrical signal using the Seebeck effect according to a change in transformer temperature while monitoring the transformer condition using a transformer temperature sensing device of claim 1; a step of converting the detected electrical signal into a transformer temperature value; and a step of displaying the transformer condition by comparing the transformer temperature value with a preset threshold value. Claim 11 A transformer temperature detection method according to claim 10, wherein an electrical signal and temperature value conversion table for converting the detected electrical signal into a transformer temperature value is stored, and the conversion step is to verify the transformer temperature value corresponding to the detected electrical signal in the electrical signal and temperature value conversion table. Claim 12 In claim 11, the transformer temperature value is one of the insulating oil temperature or the winding temperature. A transformer temperature sensing method. Claim 13 A transformer temperature detection method according to claim 11, wherein the conversion step compares a preset threshold value with the transformer temperature value, and the display step displays the transformer status as 'dangerous' if the transformer temperature value is greater than or equal to the threshold value, and displays the transformer status as 'safe' if the transformer temperature value is less than the threshold value. Claim 14 ◈Claim 14 was abandoned upon payment of the registration fee.◈ A transformer temperature sensing device according to Claim 1, comprising: at least one processor; and a memory for storing computer-readable instructions; wherein, when the instructions are executed by the at least one processor, the transformer temperature sensing device causes the transformer temperature sensing device to detect an electrical signal using the Seebeck effect according to a change in transformer temperature while monitoring the transformer state, convert the detected electrical signal into a transformer temperature value, and display the transformer state by comparing the transformer temperature value with a preset threshold value.

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