Transformer temperature anomaly detection method, device and equipment and storage medium

Abstract

The application relates to a transformer temperature anomaly detection method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring multiple temperature information of a target transformer at a target position; the multiple temperature information corresponds to the temperature information of each phase line in multiple phase conductors of the target transformer at the target position; acquiring the temperature information of a current phase line from the multiple temperature information, and acquiring the maximum temperature information and the minimum temperature information of the remaining phase lines except the temperature information of the current phase line; acquiring a temperature interval corresponding to the maximum temperature information and the minimum temperature information; and determining that the target transformer has a temperature anomaly at the target position in the case that the current temperature information is not in the temperature interval. The method can accurately detect the temperature anomaly of the transformer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric power, and in particular to a transformer temperature anomaly detection method and device, computer equipment, a storage medium and a computer program product. BACKGROUND

[0002] With the development of the electric power field, a transformer temperature anomaly detection technology has appeared. The technology detects temperature anomalies of a transformer through an oil surface temperature of the transformer, a transformer grid-side winding temperature, and a transformer valve-side winding temperature.

[0003] In the above-mentioned technology, the transformer grid-side winding temperature and the transformer valve-side winding temperature cannot be directly measured and need to be obtained through heating currents of the grid-side winding and the valve-side winding. When a current transformer CT of a winding compensation loop of the transformer is open, no heating current is generated, and at this time, the transformer grid-side winding temperature and the transformer valve-side winding temperature cannot be detected, so that the result of detecting the temperature anomaly of the transformer is inaccurate. SUMMARY

[0004] Therefore, it is necessary to provide a transformer temperature anomaly detection method and device, computer equipment, a computer readable storage medium and a computer program product that can accurately detect temperature anomalies of a transformer.

[0005] In a first aspect, the present application provides a transformer temperature anomaly detection method. The method comprises:

[0006] obtaining a plurality of temperature information of a target transformer at a target position; the plurality of temperature information corresponds to temperature information of each phase line in a plurality of phase conductors of the target transformer at the target position;

[0007] obtaining temperature information of a current phase line and maximum temperature information and minimum temperature information of the remaining phase lines except for the temperature information of the current phase line from the plurality of temperature information;

[0008] obtaining a temperature interval corresponding to the maximum temperature information and the minimum temperature information;

[0009] determining that there is a temperature anomaly of the target transformer at the target position in a case where the current temperature information is not in the temperature interval.

[0010] In one of the embodiments, the obtaining the temperature interval corresponding to the maximum temperature information and the minimum temperature information comprises: obtaining a first threshold value corresponding to the temperature interval based on the maximum temperature information; obtaining a second threshold value corresponding to the temperature interval based on the minimum temperature information; and obtaining the temperature interval corresponding to the maximum temperature information and the minimum temperature information based on the first threshold value and the second threshold value.

[0011] In one of the embodiments, the obtaining the first threshold value corresponding to the temperature interval based on the maximum temperature information and the obtaining the second threshold value corresponding to the temperature interval based on the minimum temperature information comprise: adding the maximum temperature information to a first preset value to obtain the first threshold value corresponding to the temperature interval; and obtaining a difference between the minimum temperature information and the first preset value as the second threshold value corresponding to the temperature interval.

[0012] In one of the embodiments, the target position is a transformer oil surface of the target transformer, and the multiple temperature information is temperature information of each phase line in the multi-phase conductor of the target transformer on the transformer oil surface; and the obtaining the multiple temperature information of the target transformer at the target position comprises: obtaining, by an oil surface temperature measuring device, the temperature information of each phase line in the multi-phase conductor of the target transformer on the transformer oil surface.

[0013] In one of the embodiments, the target position is a network side winding of the multi-phase conductor, and the multiple temperature information is temperature information of the network side winding of each phase line in the multi-phase conductor; and the obtaining the multiple temperature information of the target transformer at the target position comprises: obtaining heating currents respectively corresponding to the network side winding of each phase line in the multi-phase conductor; and obtaining the temperature information of the network side winding of each phase line in the multi-phase conductor based on the heating currents respectively corresponding to the network side winding of each phase line in the multi-phase conductor and the temperature information of each phase line in the multi-phase conductor on the transformer oil surface.

[0014] In one of the embodiments, the target position is a valve side winding of the multi-phase conductor, and the multiple temperature information is temperature information of the valve side winding of each phase line in the multi-phase conductor; and the obtaining the multiple temperature information of the target transformer at the target position comprises: obtaining heating currents respectively corresponding to the valve side winding of each phase line in the multi-phase conductor; and obtaining the temperature information of the valve side winding of each phase line in the multi-phase conductor based on the heating currents respectively corresponding to the valve side winding of each phase line in the multi-phase conductor and the temperature information of each phase line in the multi-phase conductor on the transformer oil surface.

[0015] In a second aspect, the present application further provides a transformer temperature anomaly detection device. The device comprises:

[0016] The temperature information acquisition module is configured to acquire a plurality of temperature information of the target transformer at a target position, wherein the plurality of temperature information corresponds to temperature information of each phase line in a multi-phase conductor of the target transformer at the target position.

[0017] The extreme temperature information acquisition module is configured to acquire temperature information of a current phase line from the plurality of temperature information, and acquire maximum temperature information and minimum temperature information of remaining phase lines except for the temperature information of the current phase line.

[0018] The temperature interval acquisition module is configured to acquire a temperature interval corresponding to the maximum temperature information and the minimum temperature information.

[0019] The temperature abnormality determination module is configured to determine that there is a temperature abnormality of the target transformer at the target position in a case where the current temperature information is not in the temperature interval.

[0020] In a third aspect, the present application further provides a computer device. The computer device comprises a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0021] The temperature information acquisition module is configured to acquire a plurality of temperature information of the target transformer at a target position, wherein the plurality of temperature information corresponds to temperature information of each phase line in a multi-phase conductor of the target transformer at the target position.

[0022] The temperature information acquisition module is configured to acquire a plurality of temperature information of the target transformer at a target position, wherein the plurality of temperature information corresponds to temperature information of each phase line in a multi-phase conductor of the target transformer at the target position.

[0023] The temperature interval acquisition module is configured to acquire a temperature interval corresponding to the maximum temperature information and the minimum temperature information.

[0024] The temperature abnormality determination module is configured to determine that there is a temperature abnormality of the target transformer at the target position in a case where the current temperature information is not in the temperature interval.

[0025] In a fourth aspect, the present application further provides a computer readable storage medium. The computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the following steps:

[0026] The temperature information acquisition module is configured to acquire a plurality of temperature information of the target transformer at a target position, wherein the plurality of temperature information corresponds to temperature information of each phase line in a multi-phase conductor of the target transformer at the target position.

[0027] The temperature information acquisition module is configured to acquire a plurality of temperature information of the target transformer at a target position, wherein the plurality of temperature information corresponds to temperature information of each phase line in a multi-phase conductor of the target transformer at the target position.

[0028] obtaining a temperature interval corresponding to the maximum temperature information and the minimum temperature information;

[0029] in a case where the current temperature information is not in the temperature interval, determining that the target transformer has temperature abnormality at the target position.

[0030] In a fifth aspect, a computer program product is provided. The computer program product includes a computer program, which, when executed by a processor, implements the following steps:

[0031] obtaining a plurality of temperature information of a target transformer at a target position; the plurality of temperature information corresponds to temperature information of each phase line in a multi-phase conductor of the target transformer at the target position;

[0032] obtaining temperature information of a current phase line from the plurality of temperature information, and obtaining maximum temperature information and minimum temperature information of the remaining phase lines except for the temperature information of the current phase line;

[0033] obtaining a temperature interval corresponding to the maximum temperature information and the minimum temperature information;

[0034] in a case where the current temperature information is not in the temperature interval, determining that the target transformer has temperature abnormality at the target position.

[0035] The transformer temperature abnormality detection method, device, computer device, storage medium and computer program product described above, by obtaining a plurality of temperature information of a target transformer at a target position; the plurality of temperature information corresponds to temperature information of each phase line in a multi-phase conductor of the target transformer at the target position; obtaining temperature information of a current phase line from the plurality of temperature information, and obtaining maximum temperature information and minimum temperature information of the remaining phase lines except for the temperature information of the current phase line; obtaining a temperature interval corresponding to the maximum temperature information and the minimum temperature information; in a case where the current temperature information is not in the temperature interval, determining that the target transformer has temperature abnormality at the target position. The present application obtains the maximum temperature information and the minimum temperature information of the remaining phase lines except for the temperature information of the current phase line, obtains a temperature interval corresponding to the maximum temperature information and the minimum temperature information, and based on the temperature interval, the temperature abnormality of the transformer can be accurately detected. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 a flowchart of a transformer temperature abnormality detection method in one embodiment;

[0037] Figure 2 a flowchart of obtaining a temperature interval in one embodiment;

[0038] Figure 3 a flowchart for acquiring the first threshold value and the second threshold value in an embodiment;

[0039] Figure 4 a logic block diagram of a transformer temperature anomaly detection method in an embodiment;

[0040] Figure 5 a structural block diagram of a transformer temperature anomaly detection device in an embodiment;

[0041] Figure 6 an internal structure diagram of a computer device in an embodiment. DETAILED DESCRIPTION

[0042] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0043] It should be noted that the terms "first" and "second" involved in the embodiments of the present application are only to distinguish similar objects and do not represent a specific order of the objects. Understandably, "first" and "second" can be interchanged in a specific order or sequence as allowed. It should be understood that the objects distinguished by "first" and "second" can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0044] In an embodiment, as shown in Figure 1 a transformer temperature anomaly detection method is provided. The present embodiment is exemplified by the method applied to a terminal. It should be understood that the method can also be applied to a server, and can also be applied to a system including a terminal and a server, and can be realized through the interaction of the terminal and the server. In the present embodiment, the method includes the following steps:

[0045] In step S101, a plurality of temperature information of a target transformer at a target position is acquired; the plurality of temperature information corresponds to the temperature information of each phase line in the multi-phase conductor of the target transformer at the target position.

[0046] Among them, the target transformer is a transformer in a temperature anomaly detection state, and the target position is a position on the target transformer, which is used to detect whether the target transformer is in a temperature anomaly state, for example, the target position can be the transformer oil surface, the grid side winding and the valve side winding of the target transformer. As for the plurality of temperature information, it refers to a plurality of different temperature values at the target position. Finally, the multi-phase conductor is a plurality of conductors corresponding to the multi-phase electricity of the target transformer, which is inserted into the transformer oil and exposed to the transformer oil surface, and the phase line is a certain phase conductor in the multi-phase conductor.

[0047] Specifically, by the temperature measuring device, and some pre-set derivation formula, a plurality of temperature information of the target transformer at the target position is obtained.

[0048] In step S102, the temperature information of the current phase line is obtained from the plurality of temperature information, and the maximum temperature information and the minimum temperature information of the remaining phase lines except the current phase line are obtained.

[0049] The current phase line is a certain phase line in the multi-phase conductor, and the remaining phase line is a phase line in the multi-phase conductor except the temperature information of the current phase line. The maximum temperature information and the minimum temperature information refer to the maximum value and the minimum value in the temperature information corresponding to the remaining phase line.

[0050] Specifically, the temperature information of the current phase line in the plurality of temperature information, and the maximum temperature information and the minimum temperature information in the remaining temperature information are obtained.

[0051] In step S103, the temperature interval corresponding to the maximum temperature information and the minimum temperature information is obtained.

[0052] The temperature interval refers to a temperature value interval established with the maximum temperature information as the maximum value and the minimum temperature information as the minimum value.

[0053] Specifically, the temperature value interval is established with the maximum temperature information as the maximum value, i.e. the right boundary of the interval, and the minimum temperature information as the minimum value, i.e. the left boundary of the interval.

[0054] In step S104, if the current temperature information is not in the temperature interval, it is determined that the target transformer has temperature abnormality at the target position.

[0055] The temperature abnormality refers to the abnormality of the temperature value of the target position of the target transformer.

[0056] Specifically, if the current temperature information is not in the above temperature interval, it can be determined that the target transformer has temperature abnormality at the target position.

[0057] In the transformer temperature anomaly detection method, the target transformer at the target position is obtained multiple temperature information; the multiple temperature information corresponds to the temperature information of each phase line of the target transformer at the target position; the temperature information of the current phase line is obtained from the multiple temperature information, and the maximum temperature information and the minimum temperature information of the remaining phase lines except the current phase line are obtained; the temperature interval corresponding to the maximum temperature information and the minimum temperature information is obtained; in the case that the current temperature information is not in the temperature interval, it is determined that the target transformer at the target position has temperature anomaly. Through obtaining the maximum temperature information and the minimum temperature information of the remaining phase lines except the current phase line, the temperature interval corresponding to the maximum temperature information and the minimum temperature information is obtained, and based on the temperature interval, the temperature anomaly of the transformer can be accurately detected.

[0058] In one embodiment, as shown in Figure 2 obtaining the temperature interval corresponding to the maximum temperature information and the minimum temperature information comprises the following steps:

[0059] In step S201, based on the maximum temperature information, the first threshold value corresponding to the temperature interval is obtained; based on the minimum temperature information, the second threshold value corresponding to the temperature interval is obtained.

[0060] The first threshold value is the right boundary value of the temperature interval, and the second threshold value is the left boundary value of the temperature interval.

[0061] Specifically, the maximum temperature information and the minimum temperature information are brought into the pre-obtained formula to obtain the first threshold value and the second threshold value corresponding to the temperature interval.

[0062] In step S202, based on the first threshold value and the second threshold value, the temperature interval corresponding to the maximum temperature information and the minimum temperature information is obtained.

[0063] Specifically, the left boundary second threshold value and the right boundary first threshold value of the temperature interval are constructed to obtain the temperature interval corresponding to the maximum temperature information and the minimum temperature information.

[0064] In this embodiment, by obtaining the left boundary second threshold value and the right boundary first threshold value of the temperature interval, the temperature interval corresponding to the maximum temperature information and the minimum temperature information can be accurately obtained.

[0065] In one embodiment, as shown in Figure 3 obtaining the temperature interval corresponding to the maximum temperature information and the minimum temperature information comprises the following steps:

[0066] In step S301, the maximum temperature information is added to the first preset value to obtain the first threshold value corresponding to the temperature interval.

[0067] The first preset value is a preset temperature value.

[0068] Specifically, the maximum temperature information is added to the first preset value to obtain the first threshold value. For example, the first preset value is 5 degrees Celsius, and the first threshold value is the maximum temperature information plus 5 degrees Celsius.

[0069] In step S302, the difference between the minimum temperature information and the first preset value is obtained as the second threshold value corresponding to the temperature interval.

[0070] The second preset value is another preset temperature value.

[0071] Specifically, the minimum temperature information is subtracted by the second preset value to obtain the second threshold value. For example, the first preset value is 5 degrees Celsius, and the second threshold value is the minimum temperature information minus 5 degrees Celsius.

[0072] In this embodiment, the first threshold value and the second threshold value can be accurately obtained through the first preset value and the second preset value.

[0073] In one embodiment, the target position is the surface of the transformer oil of the target transformer, and the plurality of temperature information is the temperature information of each phase line in the multi-phase conductor of the target transformer on the surface of the transformer oil; obtaining the plurality of temperature information of the target transformer at the target position includes the following steps:

[0074] The temperature information of each phase line in the multi-phase conductor of the target transformer on the surface of the transformer oil is obtained by the oil surface temperature measuring device.

[0075] The surface of the transformer oil is the oil surface of the transformer oil of the target transformer, and the oil surface temperature measuring device is a device for measuring the temperature of the oil surface of the transformer oil.

[0076] Specifically, the temperature information of each phase line in the multi-phase conductor of the target transformer on the surface of the transformer oil is obtained by the oil surface temperature measuring device installed on the oil surface of the transformer oil.

[0077] In this embodiment, the temperature information of each phase line in the multi-phase conductor of the target transformer on the surface of the transformer oil can be accurately obtained by the oil surface temperature measuring device installed on the oil surface of the transformer oil.

[0078] In one embodiment, the target position is the network side winding of the multi-phase conductor, and the plurality of temperature information is the temperature information of each phase line network side winding in the multi-phase conductor; obtaining the plurality of temperature information of the target transformer at the target position includes the following steps:

[0079] The heating currents corresponding to the network side windings of each phase line in the multi-phase conductor are obtained; and the temperature information of the network side windings of each phase line in the multi-phase conductor is obtained based on the heating currents corresponding to the network side windings of each phase line in the multi-phase conductor and the temperature information of each phase line on the surface of the transformer oil.

[0080] The network side winding refers to the winding directly connected with the power grid. The heating current refers to the heating current generated by the current transformer current proportional to the load current through the potential divider shunt on the network side winding, which generates an additional temperature rise on the heating wire.

[0081] Specifically, the heating current values corresponding to the network side windings of each phase line in the multi-phase conductor are obtained by the current measuring device, and the heating current values and the oil surface temperature are brought into a preset function to calculate the temperature information of the network side windings of each phase line in the multi-phase conductor.

[0082] In the embodiment, the heating current values corresponding to the network side windings of each phase line in the multi-phase conductor are obtained by the current measuring device, and the heating current values and the oil surface temperature are brought into a preset function to accurately obtain the temperature information of the network side windings of each phase line in the multi-phase conductor.

[0083] In one embodiment, the target position is the valve side winding of the multi-phase conductor, and the plurality of temperature information is the temperature information of the valve side winding of each phase line in the multi-phase conductor; and the plurality of temperature information of the target transformer at the target position comprises the following steps:

[0084] The heating currents corresponding to the valve side windings of each phase line in the multi-phase conductor are obtained; and the temperature information of the valve side windings of each phase line in the multi-phase conductor is obtained based on the heating currents corresponding to the valve side windings of each phase line in the multi-phase conductor and the temperature information of each phase line on the surface of the transformer oil.

[0085] The valve side winding refers to the secondary winding of the target transformer. The valve side winding is a crucial device in the direct current transmission system and is also the core device connecting the converter station and the inverter station at the two ends of the alternating current and direct current transmission system. The internal insulation of the ultra-high voltage converter transformer generally still adopts the oil-paper composite insulation structure. In normal operation, the electric field in the oil-paper composite insulation is a mixed electric field of alternating current and direct current, and the complexity of the electric field distribution puts higher requirements on the insulation strength. The heating current refers to the heating current generated by the current transformer current proportional to the load current through the potential divider shunt on the valve side winding, which generates an additional temperature rise on the heating wire.

[0086] Specifically, the heating current values corresponding to the valve side windings of each phase line in the multi-phase conductor are obtained by the current measuring device, and the heating current values and the oil surface temperature are brought into a preset function to calculate the temperature information of the valve side windings of each phase line in the multi-phase conductor.

[0087] In the embodiment, the current measuring device is used to obtain the heating current value corresponding to each phase line valve side winding in the multi-phase conductor, and the heating current value and the oil surface temperature are brought into a preset function, so that the temperature information of each phase line valve side winding in the multi-phase conductor can be accurately obtained.

[0088] In one application embodiment, a transformer temperature anomaly detection method is provided, as shown in the following steps. Figure 4

[0089] The three-phase temperature of the converter transformer (including the oil surface temperature, the net side winding temperature, and the valve side winding temperature) is compared, and any one of the temperatures is compared with the other two temperatures to determine whether it is within a reasonable range (not greater than the maximum value of the other two temperatures plus 5℃, and not less than the minimum value of the other two temperatures minus 5℃). When the temperature is outside the temperature range, it is determined that the temperature input is faulty. 5℃ is the recommended value. According to the on-site operation experience, the difference between the three-phase temperatures is generally not more than 3℃. A certain redundancy factor is taken to avoid false positives in low load and low temperature conditions. It is recommended to take 3-5℃.

[0090] For high-voltage direct current transmission systems, the converter transformer is one of the most important devices, and the temperature quantities that need to be monitored generally include three: oil surface temperature, net side winding temperature, and valve side winding temperature. The oil surface temperature is generally directly measured by a liquid temperature sensor. However, it is difficult to directly measure the winding temperature of the net side and the valve side due to insulation processing and high cost. Therefore, the "thermal simulation" principle is generally used to indirectly measure the winding temperature of the transformer at home and abroad. IEC354 "Transformer Load Guide" considers that the sum of the top oil temperature To and the copper oil temperature difference △Two is equivalent to the winding temperature Tw (i.e. Tw = To + △Two). The oil temperature To is directly measured from the top layer of the transformer, and the copper oil temperature difference △Two is the heating current Ih generated on the heating wire by the current transformer current Ict obtained from the CT and the load current in proportion, which is divided by the potential transformer Rw to generate an additional temperature rise, which is superimposed on the transformer top oil temperature To, thereby obtaining the transformer winding temperature Tw. In the actual operation and maintenance process, many factors may cause the transformer winding temperature to be unable to be measured, especially when the current transformer CT of the winding compensation circuit is open, there will be no heating current Ih generated, resulting in the copper oil temperature difference △Two being 0, at this time the equivalent winding temperature measured is equal to the oil surface temperature, and the transformer temperature monitoring system cannot monitor the actual winding temperature.

[0091] ​Taking the C-phase oil surface temperature fault judgment signal logic as an example, the C-phase oil surface temperature is input to a limiting module as an input quantity, then the maximum value of the A-phase oil surface temperature and the B-phase oil surface temperature is taken to an ADD addition module and added by 5℃, and then output to the limiting module as an upper limit value LU; the minimum value of the A-phase oil surface temperature and the B-phase oil surface temperature is taken to a SUB subtraction module and subtracted by 5℃, and then output to the limiting module as a lower limit value LL.

[0092] The working principle of the limiting module LIM is as follows: when the input quantity is greater than the upper limit value LU, the flag bit QU is set to 1; and when the input quantity is less than the lower limit value LL, the flag bit QL is set to 1. In this way, whether the QU and QL flag bits of the limiting module are set to 1 can determine whether the C-phase oil surface temperature is abnormal, and then the alarm signal is obtained from the QU and QL, so that the abnormal alarm effect of the C-phase oil surface temperature can be realized.

[0093] In this embodiment, based on the original temperature measurement system of the transformer, only the corresponding logic module program is added in the AC station control system or the workstation background, without the need of designing a new measurement device, so that the implementation is simple, the problem of judgment and alarm when the temperature of the transformer is abnormal can be effectively solved, the stability of the transformer in various operating conditions is greatly enhanced, and the accuracy of the transformer temperature monitoring is improved.

[0094] It should be understood that, although each step in the flowchart involved in each embodiment as described above is displayed in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other sequences. Moreover, at least part of the steps in the flowchart involved in each embodiment as described above can include multiple steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or steps or stages in other steps.

[0095] Based on the same inventive concept, the embodiment of the present application also provides a transformer temperature abnormality detection device for implementing the transformer temperature abnormality detection method as described above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, and therefore the specific limitations in one or more transformer temperature abnormality detection device embodiments provided below can refer to the limitations of the transformer temperature abnormality detection method described above, which will not be described here again.

[0096] In one embodiment, as Figure 5As shown, a transformer temperature anomaly detection device is provided, comprising: a temperature information acquisition module 501, an extreme temperature information acquisition module 502, a temperature interval acquisition module 503, and a temperature anomaly determination module 504, wherein:

[0097] The temperature information acquisition module 501 is configured to acquire a plurality of temperature information of the target transformer at the target position; the plurality of temperature information corresponds to the temperature information of each phase line in the multi-phase conductor of the target transformer at the target position;

[0098] The extreme temperature information acquisition module 502 is configured to acquire the temperature information of the current phase line from the plurality of temperature information, and acquire the maximum temperature information and the minimum temperature information of the remaining phase lines other than the temperature information of the current phase line;

[0099] The temperature interval acquisition module 503 is configured to acquire the temperature interval corresponding to the maximum temperature information and the minimum temperature information;

[0100] The temperature anomaly determination module 504 is configured to determine that there is a temperature anomaly of the target transformer at the target position in the case that the current temperature information is not in the temperature interval.

[0101] In one of the embodiments, the temperature interval acquisition module 503 is further configured to obtain a first threshold value corresponding to the temperature interval based on the maximum temperature information; obtain a second threshold value corresponding to the temperature interval based on the minimum temperature information; and obtain the temperature interval corresponding to the maximum temperature information and the minimum temperature information based on the first threshold value and the second threshold value.

[0102] In one of the embodiments, the temperature interval acquisition module 503 is further configured to add the maximum temperature information to a first preset value to obtain the first threshold value corresponding to the temperature interval; and obtain the difference between the minimum temperature information and the first preset value as the second threshold value corresponding to the temperature interval.

[0103] In one of the embodiments, the temperature information acquisition module 501 is further configured to acquire the temperature information of each phase line in the multi-phase conductor of the target transformer at the surface of the transformer oil by an oil surface temperature measuring device.

[0104] In one of the embodiments, the temperature information acquisition module 501 is further configured to acquire the heating current corresponding to each phase line network side winding in the multi-phase conductor; and obtain the temperature information of each phase line network side winding in the multi-phase conductor based on the heating current corresponding to each phase line network side winding in the multi-phase conductor and the temperature information of each phase line in the multi-phase conductor at the surface of the transformer oil.

[0105] In one of the embodiments, the temperature information obtaining module 501 is further configured to obtain heating currents corresponding to the valve side windings of the phase lines in the multi-phase conductor respectively; and obtain the temperature information of the valve side windings of the phase lines in the multi-phase conductor based on the heating currents corresponding to the valve side windings of the phase lines in the multi-phase conductor respectively and the temperature information of the phase lines in the multi-phase conductor on the surface of the transformer oil.

[0106] The modules in the transformer temperature anomaly detection apparatus can be implemented by software, hardware or a combination thereof. The modules can be embedded in or independent of a processor in a computer device in hardware form, or stored in a memory in the computer device in software form, so as to be invoked and executed by the processor to perform the operations corresponding to the modules.

[0107] In one embodiment, a computer device is provided, which can be a terminal. The internal structure of the computer device can be as shown in FIG. 8. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. The processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The communication interface of the computer device is configured to perform wired or wireless communication with an external terminal. The wireless communication can be achieved by WIFI, mobile cellular network, NFC (Near Field Communication) or other technologies. The computer program is executed by the processor to implement a transformer temperature anomaly detection method. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer overlaid on the display screen, or a key, trackball or touchpad arranged on the shell of the computer device, or an external keyboard, touchpad or mouse, etc. Figure 6

[0108] Those skilled in the art can understand that the structure shown in FIG. 8 is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific computer device can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components. Figure 6 In one embodiment, a computer device is provided, which includes a memory and a processor. The memory stores a computer program. The processor executes the computer program to implement the steps in the above method embodiments.

[0109]

[0110] ​​In an embodiment, a computer readable storage medium is provided, having stored thereon a computer program which, when executed by a processor, implements the steps of any of the above method embodiments.

[0111] In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of any of the above method embodiments.

[0112] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties.

[0113] It can be understood by those skilled in the art that all or part of the processes in the above-mentioned embodiments can be completed by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments. Any reference to memory, database or other medium used in the embodiments provided by the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided by the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided by the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0114] Any combination of the technical features in the above embodiments can be made. For the sake of brevity, the foregoing description has not described all possible combinations of the technical features in the above embodiments, however, it is understood that any combination of the technical features is within the scope of the present disclosure as long as there is no contradiction.

[0115] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these are within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A transformer temperature abnormality detection method characterized by comprising: The method comprises: obtaining multiple temperature information of a target transformer at a target position; the multiple temperature information corresponds to temperature information of each phase line in multiple phase conductors of the target transformer at the target position; obtaining temperature information of a current phase line from the multiple temperature information, and obtaining maximum temperature information and minimum temperature information of the remaining phase lines other than the temperature information of the current phase line; adding the maximum temperature information to a first preset value to obtain a first threshold value of a temperature interval corresponding to the maximum temperature information and the minimum temperature information; obtaining a difference value between the minimum temperature information and the first preset value, and taking the difference value as a second threshold value corresponding to the temperature interval; obtaining a temperature interval corresponding to the maximum temperature information and the minimum temperature information based on the first threshold value and the second threshold value; the first threshold value is a right boundary value of the temperature interval, and the second threshold value is a left boundary value of the temperature interval; in a case where the temperature information of the current phase line is not in the temperature interval, determining that there is temperature abnormality of the target transformer at the target position.

2. The method of claim 1, wherein, The target position is a transformer oil surface of the target transformer, and the multiple temperature information is temperature information of each phase line in the multiple phase conductors of the target transformer at the transformer oil surface; The method comprises: obtaining, by an oil surface temperature measuring device, the temperature information of each phase line in the multiple phase conductors of the target transformer at the transformer oil surface.

3. The method of claim 2, wherein, The target position further comprises a network side winding of the multiple phase conductors, and the multiple temperature information further comprises temperature information of the network side winding of each phase line in the multiple phase conductors; The method comprises: obtaining a heating current corresponding to each network side winding of each phase line in the multiple phase conductors; obtaining the temperature information of the network side winding of each phase line in the multiple phase conductors based on the heating current corresponding to each network side winding of each phase line in the multiple phase conductors and the temperature information of each phase line in the multiple phase conductors at the transformer oil surface.

4. The method of claim 3, wherein, The target position further comprises a valve side winding of the multiple phase conductors, and the multiple temperature information further comprises temperature information of the valve side winding of each phase line in the multiple phase conductors; The method comprises: obtaining a heating current corresponding to each valve side winding of each phase line in the multiple phase conductors; obtaining the temperature information of the valve side winding of each phase line in the multiple phase conductors based on the heating current corresponding to each valve side winding of each phase line in the multiple phase conductors and the temperature information of each phase line in the multiple phase conductors at the transformer oil surface.

5. A transformer temperature abnormality detection device characterized by comprising: The device comprises: a temperature information obtaining module, configured to obtain multiple temperature information of a target transformer at a target position; the multiple temperature information corresponds to temperature information of each phase line in multiple phase conductors of the target transformer at the target position; an extreme temperature information obtaining module, configured to obtain temperature information of a current phase line from the multiple temperature information, and obtain maximum temperature information and minimum temperature information of the remaining phase lines other than the temperature information of the current phase line; The temperature interval obtaining module is configured to add the maximum temperature information and a first preset value to obtain a first threshold of a temperature interval corresponding to the maximum temperature information and the minimum temperature information; obtain a difference between the minimum temperature information and the first preset value, and take the difference as a second threshold of the temperature interval; and obtain the temperature interval corresponding to the maximum temperature information and the minimum temperature information based on the first threshold and the second threshold, wherein the first threshold is a right boundary value of the temperature interval, and the second threshold is a left boundary value of the temperature interval. The temperature anomaly determining module is configured to determine that the target transformer has a temperature anomaly at the target position in a case where the temperature information of the current phase line is not in the temperature interval. 6.A computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the computer device is configured to perform the method according to any one of claims 1-5 when the computer program is executed by the processor. The computer program is executed by the processor to implement the steps of the method in any one of claims 1 to 4.

7. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the method in any one of claims 1 to 4.

8. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the method in any one of claims 1 to 4.

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