Health index analysis method of transformer

Abstract

The invention discloses a transformer health index analysis method, and relates to the technical field of transformer detection, and the method comprises the following steps: constructing a transformer health index system which comprises a body health index system and a tap switch health index system; obtaining an index of a body health index and an index of a tap switch health index according to the multi-dimensional data of the transformer; obtaining a first health evaluation value according to the indexes of the body health index and the tap switch health index and the corresponding weight values; obtaining a predicted aging factor based on the first health evaluation value and the new equipment health evaluation value; predicting the number of years in the future according to the first health evaluation value, and predicting an aging factor to obtain a second health evaluation value; and obtaining the health level of the transformer based on the first health evaluation value and the second health evaluation value, thereby monitoring and analyzing the health state of the transformer in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer detection, and in particular to a health index analysis method for a transformer. Background Art

[0002] With the continuous development of the power system, the transformer, as a key equipment for power transmission, has a direct impact on the stability and reliability of the power system. Therefore, transformer health status monitoring and evaluation has become an important task in the power industry. Traditional transformer health status assessment methods often rely on manual experience judgment, lacking scientificity, systematicness and repeatability. In recent years, with the advancement of sensor technology, data analysis technology and artificial intelligence technology, more and more research has been devoted to developing more accurate and efficient transformer health status assessment methods. The existing transformer health status assessment methods do not consider the current health and future health index prediction at the same time, and need further improvement. Summary of the invention

[0003] In view of the above-mentioned prior art, the present invention provides a transformer health index analysis method, which mainly solves the technical problems existing in the above-mentioned background technology.

[0004] To achieve the above object, the technical solution of the embodiment of the present invention is implemented as follows:

[0005] A transformer health index analysis method, the method comprising the following steps:

[0006] Constructing a transformer health indicator system, wherein the health indicator system includes a transformer health indicator system and a tap changer health indicator system;

[0007] According to the multi-dimensional data of the transformer, the index of the transformer health index and the index of the tap changer health index are obtained;

[0008] Adaptive calculation calculates the weight value of each main body health index and each tap switch health index;

[0009] Obtaining a first health evaluation value according to the index of the main body health index and the tap changer health index and the corresponding weight value;

[0010] Obtaining a predicted aging factor based on the first health evaluation value and the new equipment health evaluation value;

[0011] Obtaining a second health evaluation value according to the first health evaluation value, the predicted number of future years, and the predicted aging factor;

[0012] A health level of the transformer is obtained based on the first health evaluation value and the second health evaluation value.

[0013] Optionally, the main body health index system includes a first patrol factor index, a first measurement factor index, a first insulating oil detection factor index, and an oil chromatography factor index; the tap changer health index system includes a second patrol factor index, a second measurement factor index, a second insulating oil detection factor index, a tap changer operating flexibility index, and a contact contact status index.

[0014] Optionally, obtaining the index of the first patrol factor index, the first measurement factor index, the first insulating oil detection factor index, and the oil chromatography factor index specifically includes:

[0015] For the first inspection factor indicator, the oil tank status, bushing status, tap changer status, cooler status, online monitoring equipment status, and non-electrical protection status of the transformer are inspected, and scores are given based on the inspection results to obtain the index of the first inspection factor indicator;

[0016] For the first measurement factor index, various electrical tests are carried out on the transformer, and scores are given based on the electrical test results to obtain the index of the first measurement factor index;

[0017] For the first insulating oil detection factor index, the water content, acid value and breakdown voltage data of the transformer are obtained, and different scoring intervals are set. Scoring is performed according to the water content, acid value and breakdown voltage data to obtain the first insulating oil detection factor index;

[0018] For the oil chromatography test factor index, the hydrogen, total hydrocarbon and acetylene gas content data of the transformer are obtained, and different scoring intervals are set. Scoring is performed according to the hydrogen, total hydrocarbon and acetylene gas content data to obtain the oil chromatography test factor index.

[0019] Optionally, obtaining the index of the second patrol factor index, the second measurement factor index, the second insulating oil detection factor index, the operation flexibility index of the tap changer, and the contact state index specifically includes:

[0020] For the second patrol factor indicator, patrol the oil tank status, bushing status, tap changer status, cooler status, online monitoring equipment status, and non-electrical protection status of the tap changer, and score based on the patrol results to obtain the index of the second patrol factor indicator;

[0021] For the second measurement factor indicator, various electrical tests are carried out on the tap changer, and scores are given based on the electrical test results to obtain the index of the second measurement factor indicator;

[0022] For the second insulating oil detection factor index, the water content, acid value and breakdown voltage data of the tap changer are obtained, and different scoring intervals are set. Scoring is performed according to the water content, acid value and breakdown voltage data to obtain the index of the second insulating oil detection factor index;

[0023] For the operational flexibility index of the tap changer, the monitoring data of the tap changer is obtained, and different scoring intervals are set. Scoring is performed according to the monitoring data of the tap changer to obtain the index of the operational flexibility index of the tap changer;

[0024] Contact contact state index, obtain the contact state data of the tap switch, set different scoring intervals, score according to the contact state data of the tap switch, and obtain the index of the contact contact state index of the tap switch.

[0025] Optionally, the weight values ​​of each main body health indicator and each tap changer health indicator are adaptively calculated, specifically including: obtaining the weights of the first patrol factor indicator, the first measurement factor indicator, the first insulating oil detection factor indicator, the oil chromatography factor indicator, the second patrol factor indicator, the second measurement factor indicator, the second insulating oil detection factor indicator, the tap changer operating flexibility indicator, and the contact contact status indicator based on the hierarchical analysis method and the expert scoring method.

[0026] Optionally, a first health evaluation value is obtained according to the indexes of the main body health index and the tap changer health index and the corresponding weight values, specifically including: multiplying the indexes of the first patrol factor index, the first measurement factor index, the first insulating oil detection factor index, the oil chromatography factor index, the second patrol factor index, the second measurement factor index, the second insulating oil detection factor index, the tap changer operating flexibility index, and the contact contact status index by the corresponding weights, and then summing them to obtain the first health evaluation value.

[0027] Optionally, a predicted aging factor is obtained based on the first health evaluation value and the new equipment health evaluation value, and the calculation formula is:

[0028]

[0029] Where T is the operating life of the equipment and β2 is the predicted aging factor.

[0030] Optionally, the second health evaluation value is obtained according to the first health evaluation value, the predicted number of years in the future, and the predicted aging factor, and the calculation formula is:

[0031]

[0032] Among them, r is the aging reduction coefficient, t is the number of years predicted in the future, and e is the exponent.

[0033] Optionally, obtaining the health level of the transformer based on the first health assessment value and the second health assessment value specifically includes: inputting the first health assessment value and the second health assessment value into a health level assessment model constructed by a deep learning algorithm, and outputting the health level of the transformer.

[0034] The beneficial effect of the present invention is that by calculating the first health evaluation value and the future second health evaluation value of the transformer, the health status of the transformer can be monitored and analyzed in real time, which is conducive to strengthening the maintenance management of the transformer, improving equipment reliability, reducing failure rate, optimizing operational efficiency, and possibly achieving long-term safe and stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of a flow chart of a transformer health index analysis method in an embodiment of the present application; DETAILED DESCRIPTION

[0038] The technical solution of the present invention is further elaborated in detail below in conjunction with the drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. In the following description, the expression "some embodiments" is related to a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0039] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0040] It should be understood that the present invention can be implemented in different forms and should not be interpreted as being limited to the embodiments proposed herein. On the contrary, providing these embodiments will make the disclosure thorough and complete, and the scope of the present invention will be fully conveyed to those skilled in the art. And the purpose of the terms used herein is only to describe specific embodiments and is not intended to be a limitation of the present invention. When used herein, the singular forms of "one", "one" and "said / the" are also intended to include plural forms, unless the context clearly indicates another way. It should also be understood that the terms "compose" and / or "include" when used in this specification determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0041] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "inside", "outside", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0042] In order to fully understand the present invention, a detailed structure will be proposed in the following description to illustrate the technical solution proposed by the present invention. The optional embodiments of the present invention are described in detail as follows, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0043] Example 1

[0044] Please refer to the attached Figure 1 The present application provides a transformer health index analysis method, the method comprising the following steps:

[0045] S1. Constructing a health indicator system for the transformer, wherein the health indicator system includes a transformer health indicator system and a tap changer health indicator system;

[0046] S2. Obtain the index of the transformer's health index and the index of the tap changer's health index based on the transformer's multi-dimensional data, where the transformer's multi-dimensional data includes equipment information such as the transformer's model, manufacturer, date of manufacture, and years of operation, operating data such as the transformer's load rate, operating time, and ambient temperature, and maintenance records such as previous maintenance records, fault history, and repair times, such as oil chromatography, insulation resistance, and DC resistance test data;

[0047] S3, adaptively calculating the weight value of each main body health index and each tap switch health index;

[0048] S4. Obtain a first health evaluation value according to the index of the main body health index and the tap changer health index and the corresponding weight value;

[0049] S5. Obtaining a predicted aging factor based on the first health evaluation value and the health evaluation value of the new equipment;

[0050] S6, obtaining a second health evaluation value according to the first health evaluation value, the predicted number of years in the future, and the predicted aging factor;

[0051] S7. Obtain a health level of the transformer based on the first health assessment value and the second health assessment value.

[0052] In some possible implementations, the main body health indicator system includes a first patrol factor indicator, a first measurement factor indicator, a first insulating oil detection factor indicator, and an oil chromatography factor indicator; the tap changer health indicator system includes a second patrol factor indicator, a second measurement factor indicator, a second insulating oil detection factor indicator, an operating flexibility indicator of the tap changer, and a contact contact status indicator.

[0053] Further, the indexes of the first patrol factor index, the first measurement factor index, the first insulating oil detection factor index, and the oil chromatography factor index are obtained, specifically including:

[0054] For the first inspection factor indicator, the oil tank status, bushing status, tap changer status, cooler status, online monitoring equipment status, and non-electrical protection status of the transformer are inspected, and scores are given based on the inspection results to obtain the index of the first inspection factor indicator;

[0055] Different score intervals are set according to different patrol states, and the corresponding index of the first patrol factor indicator is obtained based on the score difference. For example, the surface degradation score is 1, the severe degradation score is 1.8, the maximum value is 10, and the minimum value is 0.5.

[0056] For the first measurement factor index, various electrical tests are carried out on the transformer, and scores are given based on the electrical test results to obtain the index of the first measurement factor index;

[0057] Different score ranges are set according to different measurement states, for example, a normal score is 1, a severely degraded score is 1.8, a maximum value is 10, and a minimum value is 0.5.

[0058] For the first insulating oil detection factor index, the water content, acid value and breakdown voltage data of the transformer are obtained, and different scoring intervals are set. Scoring is performed according to the water content, acid value and breakdown voltage data to obtain the first insulating oil detection factor index;

[0059] Specifically, different score ranges are set according to the trace water content, acid value and breakdown voltage.

[0060] Trace water content threshold table: if 0mg / L≤trace water content<15mg / L, the score is 0; if 50mg / L≤trace water content<10000mg / L, the score is 10.

[0061] Acid value threshold table: if 0mg KOH / g≤acid value<0.05mg KOH / g, the score is 0; if 0.3mg KOH / g≤acid value<10000mg KOH / g, the score is 10.

[0062] Breakdown voltage threshold table: if 0kV≤breakdown voltage<40kV, the score is 10; if 60kV≤breakdown voltage<10000kV, the score is 0.

[0063] For the oil chromatography test factor index, the hydrogen, total hydrocarbon and acetylene gas content data of the transformer are obtained, and different scoring intervals are set. Scoring is performed according to the hydrogen, total hydrocarbon and acetylene gas content data to obtain the oil chromatography test factor index.

[0064] Specifically, different score ranges are set according to the different contents of hydrogen, total hydrocarbons and acetylene gas.

[0065] Hydrogen threshold table: if 0ppm≤hydrogen<20ppm, the score is 0; if 200ppm≤hydrogen<10000ppm, the score is 10.

[0066] Total hydrocarbon threshold table: if 0ppm≤total hydrocarbon<20ppm, the score is 0; if 200ppm≤total hydrocarbon<10000ppm, the score is 10.

[0067] Acetylene threshold table: if 0ppm≤acetylene<1ppm, the score is 0; if 20ppm≤acetylene<100ppm, the score is 10.

[0068] Optionally, obtaining the index of the second patrol factor index, the second measurement factor index, the second insulating oil detection factor index, the operation flexibility index of the tap changer, and the contact state index specifically includes:

[0069] For the second patrol factor indicator, patrol the oil tank status, bushing status, tap changer status, cooler status, online monitoring equipment status, and non-electrical protection status of the tap changer, and score based on the patrol results to obtain the index of the second patrol factor indicator;

[0070] For the second measurement factor indicator, various electrical tests are carried out on the tap changer, and scores are given based on the electrical test results to obtain the index of the second measurement factor indicator;

[0071] Specifically, different score ranges for the tap changer are set according to different test conditions. For example, the normal score is 1, the severe degradation score is 1.8, the maximum value is 10, and the minimum value is 0.5.

[0072] For the second insulating oil detection factor index, the water content, acid value and breakdown voltage data of the tap changer are obtained, and different scoring intervals are set. Scoring is performed according to the water content, acid value and breakdown voltage data to obtain the index of the second insulating oil detection factor index;

[0073] Similarly, different scoring ranges for the tap changer are set according to the micro-water content, acid value, and breakdown voltage.

[0074] Trace water content threshold table: if 0mg / L≤trace water content<15mg / L, the score is 0; if 50mg / L≤trace water content<10000mg / L, the score is 10.

[0075] Acid value threshold table: if 0mg KOH / g≤acid value<0.05mg KOH / g, the score is 0; if 0.3mg KOH / g≤acid value<10000mg KOH / g, the score is 10.

[0076] Breakdown voltage threshold table: if 0kV≤breakdown voltage<40kV, the score is 10; if 60kV≤breakdown voltage<10000kV, the score is 0.

[0077] For the operational flexibility index of the tap changer, the monitoring data of the tap changer is obtained, and different scoring intervals are set. Scoring is performed according to the monitoring data of the tap changer to obtain the index of the operational flexibility index of the tap changer;

[0078] Contact contact state index, obtain the contact state data of the tap switch, set different scoring intervals, score according to the contact state data of the tap switch, and obtain the index of the contact contact state index of the tap switch.

[0079] In some possible implementations, the weight values ​​of each main body health indicator and each tap changer health indicator are adaptively calculated, specifically including: based on the hierarchical analysis method and the expert scoring method, the weights of the first patrol factor indicator, the first measurement factor indicator, the first insulating oil detection factor indicator, the oil chromatography factor indicator, the second patrol factor indicator, the second measurement factor indicator, the second insulating oil detection factor indicator, the tap changer operation flexibility indicator, and the contact contact status indicator are respectively obtained.

[0080] Specifically, the constructed hierarchical analysis method includes the target layer, the criterion layer and the solution layer. In this case, the target layer is the overall evaluation of transformer inspection, the criterion layer is the inspection factor, measurement factor, insulating oil inspection factor, oil chromatography test factor, etc., and the solution layer is the first inspection factor indicator, the first measurement factor indicator, the first insulating oil inspection factor indicator, the oil chromatography factor indicator, the second inspection factor indicator, the second measurement factor indicator, the second insulating oil inspection factor indicator, the tap changer operation flexibility indicator, the contact state indicator and other specific inspection items.

[0081] For each scheme-level indicator under each criterion-level indicator, a pairwise comparison judgment matrix needs to be constructed. Experts need to compare these indicators based on their experience and knowledge and give scores. Scoring usually uses a scale of 1 to 9, where 1 means that two factors are equally important and 9 means that one factor is extremely important than another.

[0082] The principles for arranging the relative order of merit of various indicators according to the nine-level proportional scale are as follows: Scale 1: Indicates that the two indicators are equally important; Scale 3: Indicates that the former is slightly more important than the latter; Scale 5: Indicates that the former is obviously more important than the latter; Scale 7: Indicates that the former is more important than the latter; Scale 9: Indicates that the former is extremely more important than the latter; Scale 2: Indicates the middle value of the judgment criteria of scales 1 and 3; Scale 4: Indicates the middle value of the judgment criteria of scales 3 and 5; Scale 6: Indicates the middle value of the judgment criteria of scales 5 and 7; Scale 8: Indicates the middle value of the judgment criteria of scales 7 and 9.

[0083] For each judgment matrix, the eigenvector corresponding to its maximum eigenvalue is calculated and normalized to obtain the weights of indicators at each solution level. The purpose of normalization is to make the sum of all weights equal to 1.

[0084] In addition, in order to verify the consistency of the judgment matrix, it is necessary to calculate the consistency index (CI) and consistency ratio (CR), and ensure that CR < 0.1. If it is not satisfied, it is necessary to readjust the score in the judgment matrix until the weight distribution of the first patrol factor index, the first measurement factor index, the first insulating oil detection factor index, the oil chromatography factor index, the second patrol factor index, the second measurement factor index, the second insulating oil detection factor index, the tap changer operation flexibility index, and the contact state index is reasonable.

[0085] Furthermore, according to the indexes of the main body health index and the tap changer health index and the corresponding weight values, a first health evaluation value is obtained, specifically including: multiplying the indexes of the first patrol factor index, the first measurement factor index, the first insulating oil detection factor index, the oil chromatography factor index, the second patrol factor index, the second measurement factor index, the second insulating oil detection factor index, the tap changer operating flexibility index, and the contact contact state index by the corresponding weights, and then summing them to obtain the first health evaluation value.

[0086] In some possible implementations, a predicted aging factor is obtained based on the first health evaluation value and the new equipment health evaluation value, and the calculation formula is:

[0087]

[0088] Among them, T is the operating life of the equipment, β2 is the predicted aging factor, and the health assessment value of new equipment is usually set based on experience.

[0089] In some possible implementations, the second health evaluation value is obtained according to the first health evaluation value, the predicted number of years in the future, and the predicted aging factor, and the calculation formula is:

[0090]

[0091] Among them, r is the aging reduction coefficient, t is the number of years predicted in the future, and e is the exponent.

[0092] In some possible implementations, obtaining the health level of the transformer based on the first health evaluation value and the second health evaluation value specifically includes: inputting the first health evaluation value and the second health evaluation value into a health level assessment model constructed by a deep learning algorithm, and outputting the health level of the transformer, wherein the deep learning algorithm includes a neural network model, etc.

[0093] The health level is usually a quantitative indicator used to measure the current status of equipment and predict its future status. For transformers, the health level can help power companies or maintenance teams better understand the working conditions of transformers, identify potential problems in a timely manner, and take preventive measures to ensure the stable operation of the power system.

[0094] Specifically, the role of health level can be reflected in the following aspects:

[0095] Condition monitoring: The health level can be used to continuously monitor the status of the transformer, helping maintenance personnel to detect possible faults or abnormal conditions in a timely manner, so as to take measures in advance to avoid faults.

[0096] Fault prediction: By comparing the current first health evaluation value with the future second health evaluation value, the future health status of the transformer can be predicted. If a significant downward trend in the health level is found, it indicates that inspection or maintenance is needed.

[0097] Maintenance plan formulation: The health level can be used as an important basis for formulating maintenance plans. According to the health level, transformers with poor health can be given priority for maintenance or replacement, thereby optimizing the allocation of maintenance resources.

[0098] Asset management and life assessment: By analyzing historical data on transformer health ratings, it is possible to assess the remaining service life and help asset managers make decisions about equipment renewal or replacement.

[0099] Risk Management: Health ratings can also be used for risk assessment, with higher health ratings meaning lower risk and vice versa. This is important for power companies’ risk management strategies and helps prevent power outages caused by equipment failures.

[0100] Optimize operation strategy: Based on the health level, the operation strategy of the transformer can be optimized, such as allowing the transformer to operate at a higher load when the health level is high, and appropriately reducing its load when the health level decreases.

[0101] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. The protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A transformer health index analysis method, characterized in that: The method comprises the following steps: Constructing a transformer health indicator system, wherein the health indicator system includes a transformer health indicator system and a tap changer health indicator system; According to the multi-dimensional data of the transformer, the index of the transformer health index and the index of the tap changer health index are obtained; Adaptive calculation calculates the weight value of each main body health index and each tap switch health index; Obtaining a first health evaluation value according to the index of the main body health index and the tap changer health index and the corresponding weight value; Obtaining a predicted aging factor based on the first health evaluation value and the new equipment health evaluation value; Obtaining a second health evaluation value according to the first health evaluation value, the predicted number of future years, and the predicted aging factor; A health level of the transformer is obtained based on the first health evaluation value and the second health evaluation value.

2. The transformer health index analysis method according to claim 1, characterized in that: The main body health index system includes the first patrol factor index, the first measurement factor index, the first insulating oil detection factor index, and the oil chromatography factor index. The tap changer health index system includes the second patrol factor index, the second measurement factor index, the second insulating oil detection factor index, the tap changer operation flexibility index, and the contact contact status index.

3. The transformer health index analysis method according to claim 2, characterized in that: Obtaining the indexes of the first patrol factor index, the first measurement factor index, the first insulating oil detection factor index, and the oil chromatography factor index, specifically including: For the first inspection factor indicator, the oil tank status, bushing status, tap changer status, cooler status, online monitoring equipment status, and non-electrical protection status of the transformer are inspected, and scores are given based on the inspection results to obtain the index of the first inspection factor indicator; For the first measurement factor index, various electrical tests are carried out on the transformer, and scores are given based on the electrical test results to obtain the index of the first measurement factor index; For the first insulating oil detection factor index, the water content, acid value and breakdown voltage data of the transformer are obtained, and different scoring intervals are set. Scoring is performed according to the water content, acid value and breakdown voltage data to obtain the first insulating oil detection factor index; For the oil chromatography test factor index, the hydrogen, total hydrocarbon and acetylene gas content data of the transformer are obtained, and different scoring intervals are set. Scoring is performed according to the hydrogen, total hydrocarbon and acetylene gas content data to obtain the oil chromatography test factor index.

4. The transformer health index analysis method according to claim 3 is characterized in that: Obtain the index of the second patrol factor index, the second measurement factor index, the second insulating oil detection factor index, the tap changer operation flexibility index, and the contact state index, specifically including: For the second patrol factor indicator, patrol the oil tank status, bushing status, tap changer status, cooler status, online monitoring equipment status, and non-electrical protection status of the tap changer, and score based on the patrol results to obtain the index of the second patrol factor indicator; For the second measurement factor indicator, various electrical tests are carried out on the tap changer, and scores are given based on the electrical test results to obtain the index of the second measurement factor indicator; For the second insulating oil detection factor index, the water content, acid value and breakdown voltage data of the tap changer are obtained, and different scoring intervals are set. Scoring is performed according to the water content, acid value and breakdown voltage data to obtain the index of the second insulating oil detection factor index; For the operational flexibility index of the tap changer, the monitoring data of the tap changer is obtained, and different scoring intervals are set. Scoring is performed according to the monitoring data of the tap changer to obtain the index of the operational flexibility index of the tap changer; The contact state index of the tap switch is obtained, and different scoring intervals are set. Scoring is performed according to the contact state data of the tap switch to obtain the index of the contact state index of the tap switch.

5. A transformer health index analysis method according to claim 4, characterized in that: The weight values ​​of each main health indicator and each tap changer health indicator are calculated adaptively, specifically including: obtaining the weights of the first patrol factor indicator, the first measurement factor indicator, the first insulating oil detection factor indicator, the oil chromatography factor indicator, the second patrol factor indicator, the second measurement factor indicator, the second insulating oil detection factor indicator, the tap changer operation flexibility indicator, and the contact contact status indicator based on the hierarchical analysis method and the expert scoring method.

6. The transformer health index analysis method according to claim 5, characterized in that: According to the indexes of the main body health index and the tap changer health index and the corresponding weight values, a first health evaluation value is obtained, specifically comprising: respectively multiplying the indexes of the first patrol factor index, the first measurement factor index, the first insulating oil detection factor index, the oil chromatography factor index, the second patrol factor index, the second measurement factor index, the second insulating oil detection factor index, the tap changer operation flexibility index, and the contact contact state index by the corresponding weights, and then summing them to obtain the first health evaluation value.

7. A transformer health index analysis method according to claim 6, characterized in that: The predicted aging factor is obtained based on the first health evaluation value and the new equipment health evaluation value, and its calculation formula is: Where T is the operating life of the equipment and β2 is the predicted aging factor.

8. The transformer health index analysis method according to claim 7, characterized in that: The second health evaluation value is obtained according to the first health evaluation value, the predicted number of years in the future, and the predicted aging factor. The calculation formula is: Among them, r is the aging reduction coefficient, t is the number of years predicted in the future, and e is the exponent.

9. The transformer health index analysis method according to claim 8, characterized in that: The obtaining of the health level of the transformer based on the first health assessment value and the second health assessment value specifically includes: inputting the first health assessment value and the second health assessment value into a health level assessment model constructed by a deep learning algorithm, and outputting the health level of the transformer.

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