CN115219835B - Oil-immersed transformer life evaluation method - Google Patents
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- 238000011156 evaluation Methods 0.000 title claims abstract description 21
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 181
- 239000003973 paint Substances 0.000 claims abstract description 72
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims abstract description 70
- 238000009413 insulation Methods 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims abstract description 51
- 230000017525 heat dissipation Effects 0.000 claims abstract description 48
- 230000007797 corrosion Effects 0.000 claims abstract description 45
- 238000005260 corrosion Methods 0.000 claims abstract description 45
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 38
- 210000003298 dental enamel Anatomy 0.000 claims description 15
- 238000004590 computer program Methods 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 13
- 238000004817 gas chromatography Methods 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 2
- 239000003570 air Substances 0.000 description 20
- 230000008569 process Effects 0.000 description 13
- 230000032683 aging Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000002966 varnish Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
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- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G06—COMPUTING; CALCULATING OR COUNTING
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Abstract
The invention provides a method for evaluating the service life of an oil-immersed transformer, which comprises the steps of determining the time length that the temperature of insulating oil is greater than the preset temperature of the insulating oil in a preset time period to obtain high-temperature time length, and obtaining the times that the temperature of the insulating oil is greater than the preset temperature of the insulating oil in the preset time period to obtain high-temperature frequency; according to the high-temperature duration, the corrosion moisture information, the high-temperature frequency and the furfural value information, offsetting the polymerization degree reference value of the insulation paper to obtain the polymerization degree information of the insulation paper; calculating to obtain service life information of the wire insulating paint based on the heat dissipation information, the high-temperature time and the high-temperature frequency, calculating to obtain service life information of the insulating oil based on the heat dissipation information, the edge oil gas information, the corrosion moisture information, the high-temperature time and the high-temperature frequency, and calibrating the polymerization degree information of the insulating paper according to the service life information of the wire insulating paint and the service life information of the insulating oil to generate polymerization degree information of the calibrated insulating paper; and an evaluation result of the service life of the transformer is generated based on the information of the polymerization degree of the calibration insulation paper, so that the accuracy of predicting the service life of the transformer is improved.
Description
Technical Field
The invention relates to a data processing technology, in particular to a transformer service life evaluation method.
Background
A Transformer (Transformer) is a device that changes an alternating-current voltage by using the principle of electromagnetic induction, and its main components are a primary coil, a secondary coil, an iron core (magnetic core), a wire insulating varnish, an insulating oil, and an insulating paper.
The transformer is the basic equipment of power transmission and distribution, and the wide application is in fields such as industry, agriculture, traffic, city community, and the life-span of transformer differs, and some transformers can cause regional outage after reaching life.
Therefore, how to effectively evaluate the service life of the transformer becomes an urgent problem to be solved.
Disclosure of Invention
The embodiment of the invention provides a method for evaluating the service life of a transformer, which realizes accurate evaluation of the service life of an oil-immersed transformer by comprehensively considering influence factors such as high-temperature frequency, heat dissipation information and the like of the oil-immersed transformer, and distributes the load of the transformer by utilizing the evaluated service life.
In a first aspect of the embodiments of the present invention, a method for evaluating a service life of an oil-immersed transformer is provided, where a data acquisition device is placed at an oil storage tank of the oil-immersed transformer for acquiring information, and the method for evaluating a service life of the oil-immersed transformer according to the acquired information specifically includes:
determining the time length that the temperature of the insulating oil is greater than the preset temperature of the insulating oil within a preset time period to obtain high-temperature time length, and obtaining the times that the temperature of the insulating oil is greater than the preset temperature of the insulating oil within the preset time period to obtain high-temperature frequency;
respectively obtaining corrosion moisture information in the environment and furfural value information in insulating oil, and offsetting a polymerization degree reference value of insulating paper according to the high-temperature duration, the corrosion moisture information, the high-temperature frequency and the furfural value information to obtain polymerization degree information of the insulating paper;
calculating to obtain service life information of the wire insulating paint based on heat dissipation information, high-temperature time and high-temperature frequency of the transformer, calculating to obtain service life information of insulating oil based on the heat dissipation information, insulating oil gas information, corrosion moisture information, high-temperature time and high-temperature frequency, and calibrating the polymerization degree information of the insulating paper according to the service life information of the wire insulating paint and the service life information of the insulating oil to generate polymerization degree information of calibrated insulating paper;
and generating an evaluation result of the service life of the transformer based on the information of the polymerization degree of the calibration insulating paper, and outputting reminding information if the evaluation result is smaller than a preset result.
Optionally, in a possible implementation manner of the first aspect, in the step of obtaining corrosion moisture information in an environment and furfural value information in insulating oil respectively, and shifting a polymerization degree reference value of the insulating paper according to the high temperature duration, the corrosion moisture information, the high temperature frequency and the furfural value information to obtain polymerization degree information of the insulating paper, specifically, the step of:
the corrosive moisture information comprises at least one of sulfur dioxide concentration information and humidity information;
if the high-temperature duration is less than or equal to a preset high-temperature duration, shifting a polymerization degree reference value of the insulating paper according to the corrosion moisture information and the furfural value information to obtain first scene insulating paper polymerization degree information;
if the high-temperature duration is longer than the preset high-temperature duration, shifting a polymerization degree reference value of the insulating paper according to the high-temperature duration, the corrosion moisture information, the high-temperature frequency and the furfural value information to obtain polymerization degree information of the insulating paper of a second scene;
the polymerization degree information of the first scene insulating paper or the polymerization degree information of the second scene insulating paper is obtained through the following formula,
wherein,
the polymerization degree information of the insulating paper for the first scene,
is a reference polymerization degree of the insulating paper,
is a constant value of the amount of the substance,
is the information of the concentration of the sulfur dioxide,
is the weighted value of the first sulfur dioxide concentration information,
as the information on the humidity level, it is,
is a first weight value of the humidity information,
in order to obtain the information of the furfural value,
is the weight value of the first furfural,
a weight value of the polymerization degree information of the first scene insulating paper,
the polymerization degree information of the insulating paper for the second scene,
in order to achieve a high temperature frequency,
is a first high-temperature frequency weight value,
for a long period of time at a high temperature,
is a first high temperature duration weight value,
and the weight value is the polymerization degree information of the insulating paper in the second scene.
Optionally, in a possible implementation manner of the first aspect, in the step of obtaining the service life information of the wire insulating varnish by calculating based on the heat dissipation information, the high temperature duration and the high temperature frequency of the transformer, the method specifically includes:
acquiring an ambient temperature, and acquiring a temperature difference value according to the difference value between the temperature of the insulating oil and the ambient temperature;
generating heat dissipation attribute information according to the temperature difference, the air heat conduction coefficient and the volume of the transformer;
if the high-temperature duration is less than or equal to the preset high-temperature duration, offsetting the service life reference information of the wire insulating paint according to the heat dissipation information to obtain service life information of the wire insulating paint in the first scene;
if the high-temperature duration is longer than the preset high-temperature duration, offsetting the service life reference information of the wire insulating paint according to the high-temperature duration, the heat dissipation information and the high-temperature frequency to obtain service life information of the wire insulating paint of a second scene;
obtaining heat dissipation information, service life information of the first scene wire insulating paint or service life information of the second scene wire insulating paint through the following formula,
wherein,
in order to dissipate the heat of the information,
in order to be the air heat transfer coefficient,
in order to be the temperature of the insulating oil,
is at the temperature of the surroundings and is,
the volume of the transformer is the volume of the transformer,
in order to be able to determine the temperature difference,
for the first scene the wire enamel life information,
is the service life benchmark information of the wire insulating paint,
is a first weight value of the thermal dissipation information,
is a constant value of the amount of the substance,
the weight value of the life information of the first scene wire enamel,
for the second scene the wire enamel life information,
in the case of a high-temperature frequency,
is a second high-temperature frequency weight value,
for a long period of time at a high temperature,
is the second high temperature duration weight value,
and the weight value is the service life information of the wire insulating paint of the second scene.
Optionally, in a possible implementation manner of the first aspect, in the step of calculating the lifetime information of the insulating oil based on the heat dissipation information, the insulating oil gas information, the corrosion moisture information, the high temperature duration, and the high temperature frequency, the method specifically includes:
obtaining the gas content in the transformer insulating oil by using a gas chromatography, and obtaining insulating oil gas information according to the gas content;
if the high-temperature duration is less than or equal to a preset high-temperature duration, shifting the insulating oil life reference information according to the insulating oil gas information, the heat dissipation information and the corrosion moisture information to obtain first scene insulating oil life information;
if the high-temperature duration is longer than the preset high-temperature duration, shifting the datum information of the service life of the insulating oil according to the insulating oil gas information, the corrosion moisture information, the high-temperature duration, the heat dissipation information and the high-temperature frequency to obtain second scene insulating oil service life information;
the first scenario insulating oil life information or the second scenario insulating oil life information is obtained by the following formula,
wherein,
the insulating oil life information is for the first scenario,
as reference information of the lifetime of the insulating oil,
in order to dissipate the heat of the information,
is the second heat dissipation information weight value,
is a constant value of the amount of the substance,
in order to insulate the information of the oil and gas,
is the first insulating oil-gas information weight value,
is the information of the concentration of the sulfur dioxide,
is the weighted value of the second sulfur dioxide concentration information,
in order to be the information of the humidity,
is the second humidity information weight value and is,
a weight value of the first scenario insulating oil life information,
insulating oil life information for the second scenario,
in order to achieve a high temperature frequency,
is a third highest Wen Pinlv weight value,
for a long period of time at a high temperature,
a third height Wen Shichang weight value,
and the weight value of the service life information of the insulating oil in the second scene is obtained.
Optionally, in a possible implementation manner of the first aspect, in the step of calibrating the insulation paper polymerization degree information according to the wire insulation paint life information and the insulation oil life information, and generating calibrated insulation paper polymerization degree information, the method specifically includes:
if the high-temperature time is less than or equal to the preset high-temperature time, calibrating the polymerization degree information of the insulating paper according to the service life information of the wire insulating paint and the service life information of the insulating oil to generate first scene calibration insulating paper polymerization degree information;
if the high-temperature duration is longer than the preset high-temperature duration, calibrating the polymerization degree information of the insulating paper according to the service life information of the wire insulating paint and the service life information of the insulating oil to generate second scene calibration polymerization degree information of the insulating paper;
the polymerization degree information of the first scene calibration insulating paper or the polymerization degree information of the second scene calibration insulating paper is obtained through the following formula,
wherein,
the degree of polymerization information of the insulating paper is calibrated for the first scene,
the polymerization degree information of the insulating paper for the first scene,
for the first scenario wire enamel life information,
the service life information weight value of the wire insulating paint,
the insulating oil life information is for the first scenario,
in order to obtain the weight value of the service life information of the insulating oil,
is a constant value of the amount of the substance,
the degree of polymerization information of the insulating paper is calibrated for the second scene,
insulating paper polymerization degree information for the second scene,
for the second scene the wire enamel life information,
insulating oil life information for a second scenario.
Optionally, in a possible implementation manner of the first aspect, in the step of generating an evaluation result of the lifetime of the transformer based on the information of the degree of polymerization of the calibration insulating paper, the method specifically includes:
generating a residual use value according to the difference value between the calibration insulation paper polymerization degree information and the insulation paper polymerization degree limit value information;
obtaining the residual use percentage according to the ratio of the residual use value to the reference polymerization degree of the insulating paper;
obtaining the service life of the transformer according to the product of the residual use percentage and the reference service life of the transformer;
the transformer life is obtained by the following formula,
wherein,
in order to calibrate the polymerization degree information of the insulating paper,
as the information of the limit value of the degree of polymerization of the insulating paper,
in order to prolong the service life of the transformer,
for the remaining value of use to be used,
in order to provide a reference life of the transformer,
is a reference polymerization degree of the insulating paper,
the weight value of the service life of the transformer.
Optionally, in a possible implementation manner of the first aspect, the method further includes:
summing the service life of each transformer according to the number of the transformers in the preset area to obtain the total service life information of the transformers in the preset area;
obtaining service life ratio information according to the ratio of the total service life information of the transformers in the preset area to the service life of each transformer;
and generating first distributed load information of each transformer according to the product of the service life ratio information and the total load in a preset area.
Optionally, in a possible implementation manner of the first aspect, the method further includes:
the first distributed load information is obtained by the following formula,
wherein,
is as follows
Information on a first distributed load of each transformer,
is the total load in the preset area,
is as follows
The transformer life of each of the transformers is,
is the upper limit value of the number of the transformers,
is as follows
Each transformer distributes the weight value of the load information.
Optionally, in a possible implementation manner of the first aspect, the method further includes:
adjusting the first distribution load information of each transformer to the second distribution load information according to the second distribution load information of each transformer actively input by an engineer;
obtaining a load regulation trend according to the first distribution load information of each transformer and the second distribution load information of each transformer;
adjusting the weight value of the transformer distributed load information according to the load adjustment trend to obtain the adjusted weight value of the transformer distributed load information;
the weight value of the adjusted transformer distributed load information is obtained by the following formula,
wherein,
is as follows
The second distribution load information of each transformer,
is as follows
Information on a first distributed load of each transformer,
the adjusted transformer is distributed with the weight value of the load information,
to correct the value of the load increase tendency,
the value is corrected for the load reduction tendency.
In a second aspect of the embodiments of the present invention, there is provided an electronic device, including: memory, a processor and a computer program, the computer program being stored in the memory, the processor running the computer program to perform the method of the first aspect of the invention as well as various possible aspects of the first aspect.
In a third aspect of the embodiments of the present invention, a readable storage medium is provided, in which a computer program is stored, which, when being executed by a processor, is adapted to implement the first aspect of the present invention and the methods according to the first aspect of the present invention.
According to the method for evaluating the service life of the oil-immersed transformer, the service life of the transformer with a plurality of interval times under the same high-temperature duration is longer by comprehensively considering the high-temperature duration and the high-temperature frequency, the information such as furfural value information and corrosion moisture in insulating oil is collected to obtain the corresponding polymerization degree information of the insulating paper, the insulating paper is difficult to replace due to the particularity of the oil-immersed transformer, the corresponding residual service life value of the transformer can be correspondingly obtained through the polymerization degree information of the insulating paper and the factory-delivered reference polymerization degree information of the insulating paper, and the accurate evaluation of the service life of the transformer is realized.
According to the technical scheme provided by the invention, the influence of the aging of transformer oil in the oil-immersed transformer and the aging of wire insulating paint on the winding on the insulating paper is considered, the polymerization degree information of the insulating paper, namely the service life of the insulating paper, is calibrated through the service life information of the transformer oil and the service life information of the wire insulating paint on the winding, the insulating paper is influenced due to excessive water content corresponding to the aged transformer oil and a large amount of dissolved gas, the insulating paper is possibly influenced due to high-position deformation or the falling of the insulating paint between corresponding wires after the aging of the wire insulating paint, and the polymerization degree information of the insulating paper is calibrated through the service life information of the wire insulating paint and the service life information of the insulating oil, so that the service life evaluation of the oil-immersed transformer can be more accurately realized.
According to the technical scheme provided by the invention, after the service lives of all transformers are evaluated, the load of each transformer is redistributed according to the total load in the region, the distributed load corresponding to the transformer with the long service life is larger, the distributed load corresponding to the transformer with the short service life is smaller, and the distribution is carried out according to the ratio of the service life of each transformer to the service life of the total transformer and the total load, so that the service life of the transformer with the short service life is prolonged, the total replacement or maintenance time of the region is unified to a certain extent, and the subsequent unified replacement is convenient.
According to the technical scheme provided by the invention, an engineer adjusts according to actual conditions, such as overhigh load corresponding to high service life, overlow load corresponding to low service life and the like, compares the adjusted second distribution load information with the first distribution load information before adjustment to obtain an adjustment trend, and automatically generates the weight value of the corresponding transformer distribution load information according to the adjustment trend.
Drawings
Fig. 1 is a schematic view of an application scenario of the technical solution provided by the present invention;
FIG. 2 is a flow diagram of a first embodiment of a method for estimating a lifetime of an oil filled transformer;
FIG. 3 is a flow chart of a second embodiment of a method for estimating a lifetime of an oil-filled transformer;
fig. 4 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
It should be understood that, in various embodiments of the present invention, the sequence numbers of the processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the internal logic of the processes, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
It should be understood that in the present application, "comprising" and "having" and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be understood that, in the present invention, "a plurality" means two or more. "and/or" is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "comprises A, B and C" and "comprises A, B, C" means that all three of A, B, C comprise, "comprises A, B or C" means that one of three of A, B, C is comprised, "comprises A, B and/or C" means that any 1 or any 2 or 3 of the three of A, B, C is comprised.
It should be understood that in the present invention, "B corresponding to a", "a corresponds to B", or "B corresponds to a" means that B is associated with a, and B can be determined from a. Determining B from a does not mean determining B from a alone, but may be determined from a and/or other information. And the matching of A and B means that the similarity of A and B is greater than or equal to a preset threshold value.
As used herein, if can be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context.
The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
As shown in fig. 1, a scene schematic diagram of the technical scheme provided by the present invention includes an oil-immersed transformer, a data acquisition device and a server, where the data acquisition device may be placed inside and outside an oil tank of the oil-immersed transformer, the data acquisition device placed inside the oil tank may be used to acquire at least one of an insulating oil temperature, the high temperature frequency, a furfural value information and a corrosive moisture information, but needs to be placed in the insulating oil inside the oil tank, a plurality of data acquisition devices may be provided correspondingly, the data acquisition device placed outside the oil tank may be used to acquire an environmental temperature, and the like, a plurality of data acquisition devices may be provided correspondingly, which is not limited herein, and the server is used to perform data processing on the acquired data and evaluate the life of the oil-immersed transformer; the engineer places data acquisition equipment in the transformer oil storage tank and is used for carrying out information acquisition, and the information of gathering includes: the method includes the steps that insulating oil temperature, high-temperature frequency, furfural value information, environment temperature and corrosion moisture information are acquired, and the acquired information is transmitted to a value server to be subjected to data processing to obtain an evaluation result of the service life of the oil-immersed transformer, wherein one or more acquisition devices can be used, and the method is not limited herein.
The invention provides a method for evaluating the service life of an oil-immersed transformer, as shown in fig. 2, a data acquisition device is arranged at an oil storage tank of the transformer for acquiring information, and the service life of the oil-immersed transformer is evaluated according to the acquired information, which specifically comprises the following steps:
step S110, determining the time length that the temperature of the insulating oil is greater than the preset temperature of the insulating oil within a preset time period to obtain high-temperature time length, and obtaining the frequency that the temperature of the insulating oil is greater than the preset temperature of the insulating oil within the preset time period to obtain high-temperature frequency. According to the technical scheme provided by the invention, the data acquisition equipment is arranged in an oil tank of the oil-immersed transformer and is inserted into the insulating oil, the temperature of the insulating oil is detected to obtain the temperature of the insulating oil, the corresponding temperature is high when the temperature of the insulating oil acquired correspondingly is higher than the preset temperature of the insulating oil, and the high-temperature duration is obtained according to the duration corresponding to the high temperature, such as: the collected temperature is 200 ℃, the preset insulating oil temperature is 100 ℃, the corresponding 200 ℃ is high temperature, the corresponding time length of the temperature higher than 100 ℃ is correspondingly recorded, and it can be understood that if the time length for the 200 ℃ to rapidly decrease to 100 ℃ is 50 seconds, the corresponding high temperature time length is 50 seconds; the data acquisition device obtains the high temperature frequency by obtaining the number of times that the temperature of the insulating oil is greater than the temperature of the insulating oil in the preset time, and it can be understood that the preset time can be 1 day or 30 days, which is not limited herein, and the corresponding number of times that the obtained acquisition temperature is greater than the preset temperature of the insulating oil by 100 ℃ obtains the high temperature frequency, for example: the temperature of the insulating oil is continuously detected for 2 times within 1 day, the time length for quickly reducing the temperature of the insulating oil from 200 ℃ for the first time is 25 seconds, the time length for quickly reducing the temperature of the insulating oil from 200 ℃ for the second time is also 25 seconds, the corresponding high-temperature frequency is 2 times/day, the corresponding high-temperature time length is 50 seconds, and the high-temperature time length and the high-temperature frequency are obtained through a data acquisition device to prepare for the subsequent life evaluation of the transformer.
And S120, respectively obtaining corrosion moisture information in the environment and furfural value information in the insulating oil, and offsetting a polymerization degree reference value of the insulating paper according to the high-temperature duration, the corrosion moisture information, the high-temperature frequency and the furfural value information to obtain polymerization degree information of the insulating paper. According to the technical scheme provided by the invention, the corrosion moisture information and the first furfural value information in the insulating oil are acquired through the data acquisition equipment, wherein the corrosion moisture information is mixed moisture (acidic moisture) of water vapor and sulfur dioxide in the air, the first furfural value information can be obtained through a gas chromatography method without limitation, the corrosion moisture information, the furfural value information, high temperature and the like have an aging effect on the insulating paper, the polymerization degree reference value of the insulating paper is shifted to obtain the current polymerization degree information of the insulating paper, and the service life of the transformer can be conveniently evaluated in the follow-up process. The reference value of the degree of polymerization of the insulating paper is the shipping degree of polymerization of the insulating paper, which may represent the lifetime of the insulating paper, and may be, for example: the shipping polymerization degree of the insulating paper is 1000, and the corresponding reference value of the polymerization degree of the insulating paper is 1000.
In a possible embodiment of the technical solution provided by the present invention, as shown in fig. 3, step S120 specifically includes:
step S1201, the corrosion moisture information includes at least one of sulfur dioxide concentration information and humidity information. According to the technical scheme provided by the invention, some transformers are positioned near a chemical plant or an iron and steel plant, the content of sulfur dioxide in the corresponding air is higher, and the higher humidity in the air is correspondingly fused with the sulfur dioxide.
And step S1202, if the high-temperature time is less than or equal to a preset high-temperature time, shifting a polymerization degree reference value of the insulating paper according to the corrosion moisture information and the furfural value information to obtain first scene insulating paper polymerization degree information. According to the technical scheme provided by the invention, if the high-temperature time is less than or equal to the preset high-temperature time, the transformer is correspondingly indicated to be in a normal working state at the moment, and the transformer does not run at an excessive high temperature or run at a long time at the high temperature, for example, the preset high-temperature time can be 0 second, it can be understood that the condition that the temperature of the insulating oil exceeds 100 ℃ does not occur in the running time of the oil-immersed transformer, and the corresponding condition that the transformer does not run at the excessive high temperature does not occur, the polymerization degree reference value of the insulating paper is shifted according to the corrosion moisture information and the first furfural value information at the moment to obtain the polymerization degree information of the insulating paper in a first scene, wherein the corrosion moisture information is the humidity in the air, namely the moisture composed of the water vapor and the pollution gas in the air, and the pollution gas is: the data acquisition device can detect the content of sulfur dioxide in the air and then obtain corrosion moisture information by combining humidity information of the air, because of the particularity of the oil-immersed transformer, when the temperature rises, the insulating oil in the oil-immersed transformer can thermally expand and discharge redundant oil in the body to an oil tank, the oil in the oil tank is increased, the oil surface rises, the redundant air in the oil tank is discharged, the balance of air pressure is kept, when the temperature of the body drops, the whole process is opposite, the transformer breathes out air when the temperature is high in the daytime, the transformer sucks in air when the temperature is low in the night, the humidity of the air at night is higher than that of the air in the daytime, the air with low humidity is breathed out and the air with high humidity is sucked, a humidity difference exists, the humidity difference accumulates in the day and the month, the moisture accumulated by the humidity difference is condensed into water drops on the inner wall of the oil conservator and drops into the oil of the oil conservator, and is deposited on the lower part of the oil conservator and flows into the transformer, and the service life of the insulating paper is influenced; the furfural value information is generated because paper insulation in a transformer belongs to a cellulose insulation material, molecular cracking chemical reaction can occur under the action of heat, paper insulation is degraded, firstly, cellulose macromolecules are broken, secondly, various aging products such as CO, CO2, furfural and the like dissolved in oil can be obtained along with the degradation process, a polymerization degree reference value of the insulation paper is shifted by corroding moisture information and data of the furfural value information to obtain a residual polymerization degree corresponding to normal operation, wherein the polymerization degree of the insulation paper can be expressed as the service life of the insulation paper, the higher the polymerization degree of the insulation paper is, the longer the service life of the insulation paper is, and the polymerization degree reference value of the insulation paper is the polymerization degree of the insulation paper, such as: the polymerization degree of the insulating paper is about 1000, and the corresponding polymerization degree reference value of the insulating paper is 1000, and the current polymerization degree information of the insulating paper is finally generated by corroding the moisture information and the deviation of the first furfural value information, for example, the deviation is 800.
Step S1203, if the high-temperature duration is longer than a preset high-temperature duration, shifting a polymerization degree reference value of the insulating paper according to the high-temperature duration, the corrosion moisture information, the high-temperature frequency and the furfural value information to obtain polymerization degree information of the insulating paper in a second scene. According to the technical scheme provided by the invention, if the high-temperature duration is greater than the preset high-temperature duration, the transformer is correspondingly indicated to have an over-high-temperature working state or have an overlong high-temperature operation, for example, the preset high-temperature duration can be 0 second, it can be understood that if the over-insulating oil temperature exceeds 100 ℃ in the operation time of the oil-immersed transformer, the corresponding durations are accumulated to obtain the high-temperature duration, and the polymerization degree reference value of the insulating paper is shifted corresponding to the high-temperature duration, the corrosion moisture information, the first high-temperature frequency and the first furfural value information to obtain the polymerization degree information of the insulating paper in a second scene, and it can be understood that, for example: the high temperature frequency is 2 times/day, the time duration corresponding to 2 times of high temperature in one day is 25 seconds and 25 seconds respectively, the corresponding high temperature time duration is 50 seconds, and finally, under the condition of over-high temperature operation, the current polymerization degree information of the insulating paper is generated.
The polymerization degree information of the first scene insulating paper or the polymerization degree information of the second scene insulating paper is obtained through the following formula,
wherein,
the polymerization degree information of the insulating paper for the first scene,
is a reference polymerization degree of the insulating paper,
is a constant value of the amount of the substance,
as information on the concentration of sulfur dioxide,
is the weighted value of the sulfur dioxide concentration information,
in order to be the information of the humidity,
is the weight value of the humidity information,
in order to obtain the information of the furfural value,
is the weight value of the first furfural,
a weight value of the polymerization degree information of the first scene insulating paper,
insulating paper polymerization degree information for the second scene,
in the case of a high-temperature frequency,
is a first high-temperature frequency weight value,
for a long period of time at a high temperature,
is a first high temperature duration weight value,
a weight value of the second scene insulation paper polymerization degree information,
and
in the inverse proportion,
and
in the inverse proportion,
and
in a direct proportion to the total weight of the composition,
and
inversely proportional, weight value of first scene insulation paper polymerization degree information
The weight value of the polymerization degree information of the insulating paper in the second scene can be set manually according to different transformer model powers and the like
Can be set manually, can be set according to different transformer model powers and the like, and can understand that the information of the corrosion moisture
Different corrosion moisture weight values and high temperature frequencies corresponding to different device influence degrees
The high temperature frequency weight values and the high temperature duration corresponding to different device influence degrees are different
And the corresponding high-temperature time duration weighted values are different when the influence degrees on different devices are different. It will be appreciated that high temperature frequencies
And duration of high temperature
Correlation, corresponding high temperature frequency at the same high temperature duration
Larger values have less effect on oil-immersed transformer life, for example: scene 1: the high temperature frequency is 2 times/day, the time length corresponding to 2 times of high temperature in one day is 25 seconds and 25 seconds respectively, the corresponding high temperature time length is 50 seconds, and scene 2: the high-temperature frequency is 5 times/day, the time duration corresponding to the high temperature of 5 times in a day is respectively 10 seconds, 10 seconds and 10 seconds, and the corresponding high-temperature time duration is 50 seconds, so that the influence of continuous high temperature on the transformer in a day is larger, the influence of occasional discontinuous high temperature on the transformer is smaller, the influence of different corresponding high-temperature frequencies under the same high-temperature time duration on the insulation paper of the oil-immersed transformer is considered to be different, and the more accurate obtaining of the polymerization degree information of the insulation paper is convenient for subsequent and accurate evaluation of transformationThe life of the device.
According to the technical scheme provided by the invention, the degree of aging of the insulating paper and the service life of the insulating paper can be reflected by the polymerization degree information of the insulating paper, the deviation of the reference polymerization degree of the insulating paper is carried out by considering different influence degrees of different high-temperature frequencies on the polymerization degree information of the insulating paper at the same high temperature, and the polymerization degree information of the insulating paper under 2 scenes is considered, so that the combination of the 2 scenes is the corresponding polymerization degree information of the insulating paper, and the service life of the transformer can be conveniently and accurately evaluated subsequently.
Step S130, calculating service life information of the wire insulating paint based on heat dissipation information, high-temperature time and high-temperature frequency, calculating service life information of insulating oil based on the heat dissipation information, insulating oil gas information, corrosion moisture information, high-temperature time and high-temperature frequency, calibrating the polymerization degree information of the insulating paper according to the service life information of the wire insulating paint and the service life information of the insulating oil, and generating polymerization degree information of the calibrated insulating paper. According to the technical scheme provided by the invention, the winding, namely the conductor part, in the oil-immersed transformer is wrapped by the insulating paper, the insulating paper and the conductor are immersed in the insulating oil, the insulating paint is arranged outside the conductor, and the aging of the insulating oil and the insulating paint can influence the service life of the insulating paper.
In a possible implementation manner, the step of calculating the service life information of the wire insulating paint based on the heat dissipation information, the high-temperature duration and the high-temperature frequency of the transformer specifically includes:
and acquiring the ambient temperature, and acquiring a temperature difference value according to the difference value between the temperature of the insulating oil and the ambient temperature. According to the technical scheme provided by the invention, the ambient temperature around the oil-immersed transformer is obtained and corresponds to the ambient temperature, and the temperature difference value is obtained according to the difference value between the temperature of the insulating oil and the ambient temperature, for example: the environment temperature is 30 ℃, the insulating oil temperature is 100 ℃, the corresponding temperature difference is 100-30=70 ℃, and the subsequent heat dissipation information generation is facilitated.
And generating heat dissipation information according to the temperature difference, the air heat conduction coefficient and the volume of the transformer. According to the technical scheme provided by the invention, the high-temperature object can radiate heat to the low-temperature object, and the heat radiation information is generated according to the first temperature difference, the air heat conduction coefficient and the transformer volume, so that the larger the temperature difference is, the faster the heat radiation is, for example: the transformer that carries out the operation with the same power, the radiating rate that corresponds in northeast and Hainan can be different, because the lower heat dissipation in the north that corresponds of northern ambient temperature can be faster, the time that corresponds the transformer and be in high temperature running state will be shorter, the transformer life-span can be higher, the higher heat dissipation that corresponds of southern ambient temperature can be slow, the time that corresponds the transformer and be in high temperature running state will be longer, the transformer life-span is shorter, convenient follow-up aassessment to wire insulating varnish life-span.
And if the high-temperature duration is less than or equal to the preset high-temperature duration, offsetting the service life reference information of the wire insulating paint according to the heat dissipation information to obtain service life information of the wire insulating paint in the first scene. According to the technical scheme provided by the invention, if the high-temperature time is less than or equal to the preset high-temperature time, the transformer is correspondingly represented to be in a normal working state at the moment, and the transformer does not run at the high temperature or for a long time, for example, the preset high-temperature time can be 0 second, it can be understood that the situation that the temperature of insulating oil exceeds 100 ℃ does not occur in the running time of the oil-immersed transformer, the situation that the transformer does not run at the high temperature correspondingly, and the reference information of the service life of the wire insulating paint is shifted correspondingly according to the heat dissipation information of the transformer in the normal running state to obtain the service life information of the wire insulating paint in the first scene; the service life reference information of the wire insulating paint can be the average service life duration of the wire insulating paint, can be the delivery service life duration of the wire insulating paint, the service life information of the wire insulating paint in the first scene is a calculation scene of the service life of the wire insulating paint which does not operate in a high-temperature state, and accurate service life information of the wire insulating paint can be generated by combining the second scene conveniently and subsequently.
And if the high-temperature duration is greater than the preset high-temperature duration, offsetting the service life reference information of the wire insulating paint according to the high-temperature duration, the heat dissipation information and the high-temperature frequency to obtain service life information of the wire insulating paint of the second scene. According to the technical scheme provided by the invention, if the high-temperature duration is greater than the preset high-temperature duration, the transformer is correspondingly indicated to have an over-high-temperature working state or an overlong high-temperature operation, for example, the preset high-temperature duration can be 0 second, and it can be understood that if the over-insulating oil temperature exceeds 100 ℃ in the operation time of the oil-immersed transformer, the total high-temperature duration is correspondingly accumulated to obtain the high-temperature duration, and the reference information of the service life of the wire insulating paint is shifted through the high-temperature duration, the heat dissipation information and the first high-temperature frequency to obtain the service life information of the wire insulating paint in a second scene, namely the service life of the current wire insulating paint, wherein the service life information of the wire insulating paint in the second scene is a calculation scene considering the service life of the wire insulating paint operating in the high-temperature state, and the first scene is conveniently combined to generate accurate service life information of the wire insulating paint.
Obtaining heat dissipation information, service life information of the first scene wire insulating paint or service life information of the second scene wire insulating paint through the following formula,
wherein,
in order to dissipate the heat of the information,
in order to be the air heat transfer coefficient,
in order to be the temperature of the insulating oil,
is at a first ambient temperature of the ambient air,
the volume of the transformer is the volume of the transformer,
in order to be able to determine the first temperature difference,
for the first scene the wire enamel life information,
is the service life benchmark information of the wire insulating paint,
is a first weight value of the thermal dissipation information,
is a constant value of the amount of the substance,
the weight value of the life information of the first scene wire enamel,
for the second scene the wire enamel life information,
in order to achieve a high temperature frequency,
is a second high-temperature frequency weight value,
for a long period of time at a high temperature,
is the second high temperature duration weight value,
the weight value of the life information of the wire enamel of the second scene,
and
in a direct proportion to the total weight of the composition,
and
in direct proportion, it can be understood that the larger the temperature difference is, the faster the heat dissipation is, and the faster the heat dissipation is, the smaller the influence on the service life of the insulating paint of the transformer wire is,
and
in a direct proportion to the total weight of the composition,
and
inversely proportional, high temperature frequency
Duration at high temperature
In relation to each other, it is understood that the time period at the same high temperature is long
Lower corresponding high temperature frequency
Higher values correspond to a smaller effect on the transformer, i.e. on the service life of the wire enamel, for example: duration of high temperatureThe high temperature frequency corresponding to 50 seconds is 2 times/day and the high temperature frequency corresponding to the high temperature duration of 50 seconds is 10 times/day, it can be seen that the 10 times correspond to only 5 seconds each time, the short high temperature has little influence on the transformer, but the continuous high temperature has larger damage to the transformer, and it can be understood that the heat dissipation information
The weight values of the corresponding heat dissipation information are different when the influence degrees of different devices are different, and the high-temperature frequency is
The high temperature frequency weight values and the high temperature duration corresponding to different device influence degrees are different
The high-temperature time length weighted values corresponding to different device influence degrees are different, and the service life information of the wire insulating paint is obtained, so that the polymerization degree of the insulating paper can be conveniently calibrated in the follow-up process.
In one possible embodiment, the service life information of the insulating oil includes:
and obtaining the gas content in the transformer insulating oil by using a gas chromatography, and obtaining the insulating oil gas information according to the gas content. According to the technical scheme provided by the invention, the gas content in the transformer insulating oil can be obtained through a gas chromatography, such as: carbon dioxide, carbon monoxide and the like can conveniently and subsequently obtain the service life information of the insulating oil of the corresponding oil-immersed transformer through the information of the gas dissolved in the insulating oil.
And if the high-temperature duration is less than or equal to the preset high-temperature duration, shifting the service life reference information of the insulating oil according to the insulating oil gas information, the heat dissipation information and the corrosion moisture information to obtain first scene insulating oil service life information. According to the technical scheme provided by the invention, if the high-temperature time is less than or equal to the preset high-temperature time, the transformer is correspondingly represented to be in a normal working state at the moment, and the transformer does not run at the high temperature or for a long time, for example, the preset high-temperature time can be 0 second, it can be understood that the situation that the insulating oil temperature exceeds 100 ℃ does not occur in the running time of the oil-immersed transformer, the situation that the insulating oil runs at the high temperature does not occur correspondingly, and the insulating oil life reference information is shifted correspondingly only by considering the insulating oil gas information, the heat dissipation information and the corrosion moisture information, so that the first scene insulating oil life information is obtained.
And if the high-temperature duration is longer than the preset high-temperature duration, obtaining second scene insulating oil life information according to the insulating oil gas information, the corrosion moisture information, the high-temperature duration, the heat dissipation information and the high-temperature frequency and the deviation of the insulating oil life reference information. According to the technical scheme provided by the invention, if the high-temperature duration is greater than the preset high-temperature duration, the transformer is correspondingly indicated to have an over-high-temperature working state or an over-long-time high-temperature operation, for example, the preset high-temperature duration can be 0 second, and the transformer is correspondingly in the over-high-temperature operation state, and the insulating oil life reference information is correspondingly shifted through the insulating oil gas information, the corrosion moisture information, the high-temperature duration, the heat dissipation information and the high-temperature frequency to obtain the second scene insulating oil life information, and the two scenes are combined to more accurately obtain the insulating oil life information.
The first scenario insulating oil life information or the second scenario insulating oil life information is obtained by the following formula,
wherein,
the insulating oil life information is for the first scenario,
as the reference information of the lifetime of the insulating oil,
in order to dissipate the heat of the information,
for the second heat dissipation information to affect the weight value of the insulating oil,
is a constant value of the amount of the substance,
as the information of the first insulating oil gas,
is the first insulating oil-gas information weight value,
as information on the concentration of sulfur dioxide,
is the weighted value of the second sulfur dioxide concentration information,
in order to be the information of the humidity,
is the second humidity information weight value and is,
a weight value of the first scenario insulating oil life information,
insulating oil life information for the second scenario,
in order to achieve a high temperature frequency,
is a third highest Wen Pinlv weight value,
is highWen Shichang of the formula,
a third height Wen Shichang weight value,
weighted value and heat dissipation information of the service life information of the insulating oil in the second scene
Oil life information from second scene
In direct proportion, it is understood that the faster the heat is dissipated, the longer the life of the corresponding transformer,
and
inversely proportional, it can be appreciated that the greater the corrosion moisture information, the corresponding second scenario insulating oil life information
The smaller the moisture content, the more rapidly the oil ages, which results in a decrease in the insulation properties of the insulating oil.
According to the technical scheme provided by the invention, because various factors such as heat dissipation information, corrosion moisture information and the like have different influences on different parts, the factors affect the insulating oil, and the factors are comprehensively considered, and the scene is divided into a normal operation scene and a high-temperature operation scene, so that the service life information of the insulating oil is obtained.
In a possible embodiment, the step of calibrating the polymerization degree information of the insulation paper according to the service life information of the wire insulating paint and the service life information of the insulating oil to generate the polymerization degree information of the calibrated insulation paper specifically includes:
and if the high-temperature duration is less than or equal to the preset high-temperature duration, calibrating the polymerization degree information of the insulating paper according to the service life information of the wire insulating paint and the service life information of the insulating oil to generate first scene calibration insulating paper polymerization degree information. According to the technical scheme provided by the invention, if the high-temperature time is less than or equal to the preset high-temperature time, the transformer is correspondingly represented to be in a normal working state at the moment, and the transformer does not run at an excessive temperature or does not run at a high position for a long time, for example, the preset high-temperature time can be 0 second, and it can be understood that the condition that the temperature of the insulating oil exceeds 100 ℃ does not occur in the running time of the oil-immersed transformer, and the corresponding condition that the transformer does not run at an excessive temperature does not occur, and the polymerization degree information of the insulating paper is calibrated only by correspondingly considering the service life information of the insulating paint of the lead and the service life information of the insulating oil under the first scene, so that the polymerization degree information of the insulating paper is more accurately obtained.
And if the high-temperature duration is longer than the preset high-temperature duration, calibrating the polymerization degree information of the insulating paper according to the service life information of the wire insulating paint and the service life information of the insulating oil to generate second scene calibration insulating paper polymerization degree information. According to the technical scheme provided by the invention, if the high-temperature time is longer than the preset high-temperature time, the transformer is correspondingly indicated to have an over-high-temperature working state or an over-long high-temperature operation state, for example, the preset high-temperature time can be 0 second, and if the preset high-temperature time is the over-high-temperature operation state, the calibration of the service life information of the wire insulating paint and the service life information of the insulating oil on the polymerization degree information of the insulating paper is correspondingly considered, so that the polymerization degree information of the insulating paper can be more accurately obtained.
The polymerization degree information of the first scene calibration insulating paper or the polymerization degree information of the second scene calibration insulating paper is obtained through the following formula,
wherein,
the degree of polymerization information of the insulating paper is calibrated for the first scene,
the service life information weight value of the wire insulating paint,
the weight value of the service life information of the insulating oil is a constant value,
the insulating paper polymerization degree information is calibrated for the second scene,
insulating paper polymerization degree information for the second scene,
and
in a direct proportion to the total weight of the composition,
and
in a direct proportion to the total weight of the composition,
and
in a direct proportion to the total weight of the composition,
and
proportional, constant value
The setting can be manual setting or setting according to the load information of the transformer.
According to the technical scheme provided by the invention, because the service life information of the insulating oil and the wire insulating paint also influences the polymerization degree of the insulating paper, it can be understood that the smaller the service life value of the insulating oil is, the higher the corresponding water content is, the lower the polymerization degree of the insulating paper is, the larger the service life value of the insulating oil is, the lower the corresponding water content is, the slower the polymerization degree of the insulating paper is, so that the influence process is positive correlation, the service life information of the wire insulating paint is also positive correlation, and the polymerization degree of the insulating paper is further calibrated to form accurate polymerization degree information of the insulating paper.
And S140, generating an evaluation result of the service life of the transformer based on the polymerization degree information of the calibration insulation paper, and outputting reminding information if the evaluation result is smaller than a preset result. According to the technical scheme provided by the invention, the calibrated polymerization degree information of the insulating paper corresponds to generate a service life evaluation result of the transformer, because of the particularity of the oil-immersed transformer, for example, transformer oil can be conveniently replaced, but the insulating paper is difficult to replace, so that the service life of the transformer is evaluated by directly utilizing the polymerization degree information of the insulating paper, namely the service life information, and if the corresponding evaluation result is less than a preset result, the transformer is reminded to exceed the service life or need maintenance, and an engineer is reminded to prevent accidents.
In a possible implementation manner of the technical solution provided by the present invention, step S140 specifically includes:
and generating a residual use value according to the difference value of the calibration insulation paper polymerization degree information and the insulation paper polymerization degree limit value information. According to the technical scheme provided by the invention, the residual service life is obtained according to the current polymerization degree of the insulation paper, namely, the difference value between the calibrated polymerization degree information of the insulation paper and the polymerization degree limit value of the insulation paper, wherein the polymerization degree limit value of the insulation paper is the minimum polymerization degree information of the insulation paper and can represent the maximum service life of the insulation paper, and the residual service life represents the difference value of the polymerization degree limit value of the insulation paper compared with the polymerization degree limit value of the current insulation paper, so that the larger the residual difference value is, the longer the corresponding residual service life is, for example: calibration insulation paper polymerization degree information is 800, insulation paper polymerization degree limit value information is 500, and the corresponding remaining use value is 800-500=300, where insulation paper polymerization degree limit value information is the minimum polymerization degree that the insulation paper can be used, it is understood that the insulation paper polymerization degree is related to the lifetime of the insulation paper itself, and the higher the insulation paper polymerization degree, the longer the lifetime, and the lower the insulation paper polymerization degree, the shorter the lifetime, for example: the outgoing polymerization degree is 1000 until the polymerization degree which cannot be used is 500, and the corresponding 500 is the limit value information of the polymerization degree of the insulating paper, so that the service life of the transformer can be conveniently evaluated in the follow-up process.
And obtaining the residual use percentage according to the ratio of the residual use value to the reference polymerization degree of the insulating paper. According to the technical scheme provided by the invention, the residual use percentage is obtained according to the ratio of the residual use value to the reference polymerization degree of the insulating paper, wherein the reference polymerization degree of the insulating paper is the initial polymerization degree of the insulating paper and can represent the service life of the transformer, for example: the benchmark polymerization degree of the insulating paper is 1000, the residual use value is 300, the residual use percentage is 0.3 (30%) correspondingly, and the subsequent evaluation on the service life of the transformer is convenient.
And obtaining the service life of the transformer according to the product of the residual use percentage and the reference service life of the transformer. According to the technical scheme provided by the invention, the service life of the transformer is obtained according to the product of the residual use percentage and the reference service life of the transformer, and the service life of the oil-immersed transformer is evaluated through the residual polymerization degree of the insulating paper, for example: if the reference life of the transformer corresponding to the residual use percentage of 0.3 (30%) is 20 years, the life of the transformer can be evaluated, and subsequent engineers can conveniently replace and maintain the transformer.
The transformer life is obtained by the following formula,
wherein,
in order to calibrate the polymerization degree information of the insulating paper,
to be insulatedInformation on a limit value of a degree of polymerization of the paper,
in order to prolong the service life of the transformer,
in order to provide a reference life of the transformer,
is a reference polymerization degree of the insulating paper,
is the weight value of the service life of the transformer,
to a remaining usage value, a remaining usage value
And
is in direct proportion. Wherein the reference life of the transformer
The factory life of the transformer is the initial life value, for example, the reference life of the transformer corresponding to the transformer with the life of 20 years is common when the transformer just leaves the factory
For 20 years.
According to the technical scheme provided by the invention, the service life of the transformer is generated through the calibrated polymerization degree of the insulating paper, the limit value information of the polymerization degree of the insulating paper and the reference service life of the transformer, the service life of the transformer is estimated, and a corresponding engineer can be used as a reference to maintain and repair the transformer to prevent economic loss and accidents caused by power failure caused by the transformer.
In a possible embodiment, the technical solution provided by the present invention further includes:
and summing the service life of each transformer according to the number of the transformers in the preset area to obtain the total service life information of the transformers in the preset area. According to the technical scheme provided by the invention, the service lives of all transformers in the region are summed, and the total service life of all the transformers is correspondingly obtained, so that the load of each transformer can be conveniently distributed in the follow-up process.
And obtaining service life ratio information according to the ratio of the total service life information of the transformers in the preset area to the service life of each transformer. According to the technical scheme provided by the invention, the service life ratio is obtained according to the ratio of the service life of each transformer to the total service life of the transformers in the area, and the load is conveniently and reasonably distributed according to the service life ratio correspondingly and subsequently.
And generating first distributed load information of each transformer according to the product of the service life ratio information and the total load in a preset area. According to the technical scheme provided by the invention, the total load is reasonably distributed according to the service life ratio of each transformer by the product of the service life ratio information and the total load in the preset area, so that the transformer with a small service life value is distributed with a smaller load, and the service life of the transformer with a small service life value is correspondingly prolonged.
In a possible embodiment, the technical solution provided by the present invention further includes:
the first distributed load information is obtained by the following formula,
wherein,
is as follows
Information on a first distributed load of each transformer,
is the total load in the preset area,
for the transformer life of the first transformer,
is the upper limit value of the number of the transformers,
is as follows
Each transformer distributes a weight value of the load information,
and
in the inverse proportion,
and
in direct proportion, the first
Distributing weight value of load information by transformer
The setting can be manual, and the setting is performed according to different properties of each transformer, such as the rated load of the transformer. And distributing the load of each transformer according to the total load in the preset area, the service life of each transformer and the number of the transformers to obtain first distributed load information of each transformer. According to the technical scheme provided by the invention, the load of each transformer is distributed according to the total load of the area and the service life of each transformer, the higher load is distributed corresponding to the transformer with the long service life, the lower load is distributed to the transformer with the low service life, and the load is reasonably distributed to ensure that the load is balancedThe service life of the transformer which needs to have a short service life is prolonged.
According to the technical scheme provided by the invention, the load is distributed according to the different service lives of the transformers, so that the load of the transformer with the low service life is reduced after distribution, the high-temperature working time is reduced, the service life is prolonged, the service life of the whole transformer is averaged, and the subsequent unified maintenance and replacement are convenient.
In a possible embodiment, the technical solution provided by the present invention further includes:
and adjusting the first distribution load information of each transformer to the second distribution load information according to the second distribution load information of each transformer actively input by an engineer. According to the technical scheme provided by the invention, an engineer can adjust the automatically distributed loads of the system according to the actual situation, and probably some transformers with long service lives have overlarge distributed loads and some transformers with low service lives have undersized distributed loads which do not reach the power used normally, and the system is correspondingly adjusted to the second distributed load information, so that the operation of the transformers is more consistent with the actual situation.
And obtaining the load adjustment trend according to the first distribution load information of each transformer and the second distribution load information of each transformer. According to the technical scheme provided by the invention, adjustment is carried out according to the trend of the engineer before and after adjustment, namely the first distributed load information of each transformer and the second distributed load information of each transformer, whether the distribution load information is in a large scale or in a small scale.
And adjusting the weight value of the transformer distributed load information according to the load adjustment trend to obtain the adjusted weight value of the transformer distributed load information. According to the technical scheme provided by the invention, the weight value of the load information distributed to each transformer is adjusted according to the load adjustment trend, the adjusted weight value is more consistent with the actual situation, and the self-learning adjustment function is provided, so that the service life of the transformer in the preset area is prolonged.
The weight value of the adjusted transformer distributed load information is obtained through the following formula,
wherein,
is a first
The second distribution load information of each transformer,
is as follows
Information on a first distributed load of each transformer,
the adjusted transformer is distributed with the weight value of the load information,
to correct the value of the load increase tendency,
the value is corrected for the load reduction tendency.
According to the technical scheme provided by the invention, the corresponding weight can be changed after an engineer adjusts the weight according to the actual situation, the adjusted scene can be automatically learned, the weight is more consistent with the actual scene through the continuously adjusted learning, and the service life of the transformer is prolonged.
As shown in fig. 4, which is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention, the electronic device 50 includes: a processor 51, a memory 52 and computer programs; wherein
A memory 52 for storing the computer program, which may also be a flash memory (flash). The computer program is, for example, an application program, a functional module, or the like that implements the above-described method.
A processor 51 for executing the computer program stored in the memory to implement the steps performed by the apparatus in the above method. Reference may be made in particular to the description relating to the preceding method embodiment.
Alternatively, the memory 52 may be separate or integrated with the processor 51.
When the memory 52 is a device independent of the processor 51, the apparatus may further include:
a bus 53 for connecting the memory 52 and the processor 51.
The present invention also provides a readable storage medium, in which a computer program is stored, which, when being executed by a processor, is adapted to implement the methods provided by the various embodiments described above.
The readable storage medium may be a computer storage medium or a communication medium. Communication media includes any medium that facilitates transfer of a computer program from one place to another. Computer storage media can be any available media that can be accessed by a general purpose or special purpose computer. For example, a readable storage medium is coupled to a processor such that the processor can read information from, and write information to, the readable storage medium. Of course, the readable storage medium may also be an integral part of the processor. The processor and the readable storage medium may reside in an Application Specific Integrated Circuits (ASIC). Additionally, the ASIC may reside in user equipment. Of course, the processor and the readable storage medium may also reside as discrete components in a communication device. The readable storage medium may be a read-only memory (ROM), a random-access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
The present invention also provides a program product comprising execution instructions stored in a readable storage medium. The at least one processor of the device may read the execution instructions from the readable storage medium, and the execution of the execution instructions by the at least one processor causes the device to implement the methods provided by the various embodiments described above.
In the above embodiments of the apparatus, it should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The method for evaluating the service life of the oil-immersed transformer is characterized in that data acquisition equipment is placed at an oil storage tank of the oil-immersed transformer and used for acquiring information, and the service life of the oil-immersed transformer is evaluated according to the acquired information, and the method specifically comprises the following steps:
determining the time length that the temperature of the insulating oil is greater than the preset temperature of the insulating oil within a preset time period to obtain high-temperature time length, and obtaining the times that the temperature of the insulating oil is greater than the preset temperature of the insulating oil within the preset time period to obtain high-temperature frequency;
respectively acquiring corrosion moisture information in the environment and furfural value information in insulating oil, and offsetting a polymerization degree reference value of insulating paper according to the high-temperature duration, the corrosion moisture information, the high-temperature frequency and the furfural value information to obtain polymerization degree information of the insulating paper;
calculating to obtain service life information of the wire insulating paint based on heat dissipation information, high-temperature time and high-temperature frequency of the transformer, calculating to obtain service life information of insulating oil based on the heat dissipation information, insulating oil gas information, corrosion moisture information, high-temperature time and high-temperature frequency, and calibrating the polymerization degree information of the insulating paper according to the service life information of the wire insulating paint and the service life information of the insulating oil to generate polymerization degree information of calibrated insulating paper;
generating an evaluation result of the service life of the transformer based on the polymerization degree information of the calibration insulation paper, and outputting reminding information if the evaluation result is smaller than a preset result;
in the step of respectively obtaining corrosion moisture information in the environment and furfural value information in the insulating oil, offsetting the insulating paper polymerization degree reference value according to the high temperature duration, the corrosion moisture information, the high temperature frequency and the furfural value information to obtain insulating paper polymerization degree information, the method specifically comprises:
the corrosive moisture information comprises at least one of sulfur dioxide concentration information and humidity information;
if the high-temperature duration is less than or equal to a preset high-temperature duration, shifting a polymerization degree reference value of the insulating paper according to the corrosion moisture information and the furfural value information to obtain first scene insulating paper polymerization degree information;
if the high-temperature duration is longer than the preset high-temperature duration, shifting a polymerization degree reference value of the insulating paper according to the high-temperature duration, the corrosion moisture information, the high-temperature frequency and the furfural value information to obtain polymerization degree information of the insulating paper of a second scene;
the polymerization degree information of the first scene insulating paper or the polymerization degree information of the second scene insulating paper is obtained by the following formula,
wherein,
as a first sceneInformation on the degree of polymerization of the insulating paper,
is a reference polymerization degree of the insulating paper,
is a constant value of the amount of the substance,
is the information of the concentration of the sulfur dioxide,
is the weighted value of the first sulfur dioxide concentration information,
in order to be the information of the humidity,
is the weight value of the first humidity information,
in order to obtain the information of the furfural value,
is the weight value of the first furfural,
a weight value of the polymerization degree information of the first scene insulating paper,
insulating paper polymerization degree information for the second scene,
in the case of a high-temperature frequency,
is a first high-temperature frequency weight value,
for a long period of time at a high temperature,
is a first high temperature duration weight value,
the weight value of the polymerization degree information of the insulating paper in the second scene is obtained;
in the step of calculating the service life information of the wire insulating paint based on the heat dissipation information, the high-temperature duration and the high-temperature frequency of the transformer, the method specifically comprises the following steps:
acquiring an ambient temperature, and acquiring a temperature difference value according to the difference value between the temperature of the insulating oil and the ambient temperature;
generating heat dissipation information according to the temperature difference, the air heat conduction coefficient and the volume of the transformer;
if the high-temperature duration is less than or equal to the preset high-temperature duration, offsetting the service life reference information of the wire insulating paint according to the heat dissipation information to obtain service life information of the wire insulating paint in the first scene;
if the high-temperature duration is longer than the preset high-temperature duration, offsetting the service life reference information of the wire insulating paint according to the high-temperature duration, the heat dissipation information and the high-temperature frequency to obtain service life information of the wire insulating paint of a second scene;
obtaining heat dissipation information, service life information of the first scene of the wire insulating paint or service life information of the second scene of the wire insulating paint through the following formulas,
wherein,
in order to dissipate the heat of the information,
in order to be the air heat transfer coefficient,
in order to be the temperature of the insulating oil,
is at the temperature of the surroundings and is,
the volume of the transformer is the volume of the transformer,
in order to be able to determine the temperature difference,
for the first scenario wire enamel life information,
is the service life benchmark information of the wire insulating paint,
is a first weight value of the thermal dissipation information,
is a constant value of the amount of the substance,
the weight value of the life information of the first scene wire enamel,
for the second scene the wire enamel life information,
in order to achieve a high temperature frequency,
is a weight value of the second high temperature frequency,
for a long period of time at a high temperature,
is the second high temperature duration weight value,
the weight value of the service life information of the wire insulating paint of the second scene is obtained;
in the step of calculating based on heat dissipation information, insulating oil gas information, corrosion moisture information, high temperature duration and high temperature frequency and obtaining insulating oil life information, specifically include:
obtaining the gas content in the transformer insulating oil by using a gas chromatography, and obtaining insulating oil gas information according to the gas content;
if the high-temperature duration is less than or equal to a preset high-temperature duration, shifting the insulating oil life reference information according to the insulating oil gas information, the heat dissipation information and the corrosion moisture information to obtain first scene insulating oil life information;
if the high-temperature duration is longer than the preset high-temperature duration, shifting the datum information of the service life of the insulating oil according to the insulating oil gas information, the corrosion moisture information, the high-temperature duration, the heat dissipation information and the high-temperature frequency to obtain second scene insulating oil service life information;
the first scenario insulating oil life information or the second scenario insulating oil life information is obtained by the following formula,
wherein,
is firstInformation on the lifetime of the scene insulating oil,
as reference information of the lifetime of the insulating oil,
in order to dissipate the heat of the information,
is the second heat dissipation information weight value,
is a constant value of the amount of the substance,
in order to insulate the information of the oil gas,
is the first insulation oil gas information weight value,
as information on the concentration of sulfur dioxide,
is the weighted value of the second sulfur dioxide concentration information,
as the information on the humidity level, it is,
is the second humidity information weight value and is,
a weight value of the first scenario insulating oil life information,
insulating oil life information for the second scenario,
in order to achieve a high temperature frequency,
a third height Wen Pinlv weight value,
the time period at a high temperature is long,
a third height Wen Shichang weight value,
the weighted value of the service life information of the insulating oil in the second scene is obtained;
in the step of calibrating the polymerization degree information of the insulation paper according to the service life information of the wire insulation paint and the service life information of the insulation oil to generate the polymerization degree information of the calibrated insulation paper, the method specifically comprises the following steps:
if the high-temperature time is less than or equal to the preset high-temperature time, calibrating the polymerization degree information of the insulating paper according to the service life information of the wire insulating paint and the service life information of the insulating oil to generate first scene calibration insulating paper polymerization degree information;
if the high-temperature duration is longer than the preset high-temperature duration, calibrating the polymerization degree information of the insulating paper according to the service life information of the wire insulating paint and the service life information of the insulating oil to generate second scene calibration insulating paper polymerization degree information;
the polymerization degree information of the first scene calibration insulating paper or the polymerization degree information of the second scene calibration insulating paper is obtained through the following formula,
wherein,
the degree of polymerization information of the insulating paper is calibrated for the first scene,
the polymerization degree information of the insulating paper for the first scene,
for the first scene the wire enamel life information,
the service life information weight value of the wire insulating paint,
the insulating oil life information is for the first scenario,
in order to obtain the weight value of the service life information of the insulating oil,
is a constant value of the amount of the substance,
the degree of polymerization information of the insulating paper is calibrated for the second scene,
insulating paper polymerization degree information for the second scene,
for the second scene the wire enamel life information,
insulating oil life information of a second scene;
in the step of generating an evaluation result of the service life of the transformer based on the information of the degree of polymerization of the calibration insulating paper, the method specifically includes:
generating a residual use value according to the difference value between the calibration insulation paper polymerization degree information and the insulation paper polymerization degree limit value information;
obtaining the residual use percentage according to the ratio of the residual use value to the reference polymerization degree of the insulating paper;
obtaining the service life of the transformer according to the product of the residual use percentage and the reference service life of the transformer;
the transformer life is obtained by the following formula,
wherein,
in order to calibrate the polymerization degree information of the insulating paper,
as the information of the limit value of the degree of polymerization of the insulating paper,
in order to prolong the service life of the transformer,
in order to have a remaining value of use,
in order to provide a reference life of the transformer,
is a reference polymerization degree of the insulating paper,
the weight value of the service life of the transformer.
2. The method of claim 1, further comprising:
summing the service life of each transformer according to the number of the transformers in the preset area to obtain the total service life information of the transformers in the preset area;
obtaining service life ratio information according to the ratio of the total service life information of the transformers in the preset area to the service life of each transformer;
and generating first distributed load information of each transformer according to the product of the service life ratio information and the total load in a preset area.
3. The method of claim 2, further comprising:
the first distributed load information is obtained by the following formula,
wherein,
is as follows
Information on a first distributed load of each transformer,
is the total load in the preset area,
is as follows
The transformer life of each of the transformers is,
for transformersThe upper limit value of the amount of the substance,
is as follows
Each transformer distributes the weight value of the load information.
4. The method of claim 3, further comprising:
adjusting the first distribution load information of each transformer to the second distribution load information according to the second distribution load information of each transformer actively input by an engineer;
obtaining a load regulation trend according to the first distribution load information of each transformer and the second distribution load information of each transformer;
adjusting the weight value of the transformer distributed load information according to the load adjustment trend to obtain the adjusted weight value of the transformer distributed load information;
the weight value of the adjusted transformer distributed load information is obtained through the following formula,
wherein,
is as follows
The second distribution load information of each transformer,
is as follows
First branch of transformerThe information of the load is distributed to the user terminal,
the adjusted transformer is distributed with the weight value of the load information,
to correct the value of the load increase tendency,
the value is corrected for the load reduction tendency.
5. An electronic device, comprising: memory, a processor and a computer program, the computer program being stored in the memory, the processor executing the computer program when executing it for implementing the method of any of claims 1 to 4.
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