Insulating oil aging detection device, method and equipment and readable storage medium

Abstract

The invention relates to the technical field of insulation oil aging detection, and provides an insulation oil aging detection device, method and equipment and a readable storage medium, the insulation oil aging detection device comprises a sampling device used for sampling from to-be-detected insulation oil to obtain a to-be-detected insulation oil sample; the insulating oil tank is used for storing a to-be-detected insulating oil sample; the multi-dimensional parameter acquisition assembly is mounted in the insulating oil tank and is used for acquiring multi-dimensional parameters associated with the aging degree of the insulating oil sample to be detected and feeding back the multi-dimensional parameters to the main controller; and the main controller is used for receiving the multi-dimensional parameters and detecting and evaluating the aging degree of the to-be-detected insulating oil sample according to the multi-dimensional parameters. According to the invention, comprehensive real-time detection of the whole insulation oil aging key aging index detection process is realized, the steps of sampling, detection, analysis, judgment and the like can be rapidly and automatically completed, and the real-time performance and accuracy of detection are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of insulating oil aging detection, and in particular to an insulating oil aging detection device, method, equipment and readable storage medium. Background Art

[0002] As an important insulating and cooling medium in electrical equipment such as transformers, the performance of insulating oil directly affects the safe operation of the equipment. As the equipment is used for a longer time, the insulating oil will gradually age, with an increase in acid value, an increase in moisture content, and a decrease in dielectric properties. These changes not only reduce the insulating properties of the insulating oil, but may also accelerate the aging process of the equipment, causing failures or even accidents. Therefore, timely and accurate assessment of the aging degree of insulating oil is of great significance to ensure the reliable operation of power equipment.

[0003] Traditional insulating oil aging detection methods are mostly based on chemical analysis or physical property testing. Although they can complete insulating oil aging detection to a certain extent, they only use a single aging indicator to detect and evaluate the aging of insulating oil, which is not comprehensive enough and may cause misjudgment. Its accuracy needs to be further improved. Summary of the invention

[0004] Based on this, in order to more comprehensively and accurately detect and evaluate the aging degree of insulating oil, the present invention provides an insulating oil aging detection device, method, equipment and readable storage medium, and its specific technical solution is as follows:

[0005] An insulating oil aging detection device, comprising:

[0006] A sampling device, used for sampling from the insulating oil to be tested, and obtaining the insulating oil sample to be tested;

[0007] Insulating oil tank, used to store insulating oil samples to be tested;

[0008] A multi-dimensional parameter acquisition component is installed in the insulating oil tank and is used to collect multi-dimensional parameters associated with the aging degree of the insulating oil sample to be tested and feed them back to the main controller;

[0009] The main controller is used to receive multi-dimensional parameters and detect and evaluate the aging degree of the insulating oil sample to be tested based on the multi-dimensional parameters.

[0010] In the insulating oil aging detection device, multi-dimensional parameters associated with the aging degree of the insulating oil sample to be detected are collected by a multi-dimensional parameter collection component and fed back to a main controller, and the main controller detects and evaluates the aging degree of the insulating oil sample to be detected based on the multi-dimensional parameters. The aging of the insulating oil is detected and evaluated based on different aging indicators, which can overcome the problem that the traditional insulating oil aging detection method detects and evaluates the aging of the insulating oil through a single aging indicator, which is not comprehensive and has the possibility of misjudgment.

[0011] Optionally, the multi-dimensional parameter acquisition component includes:

[0012] A voltage sensor, used to collect the breakdown voltage of the insulating oil sample to be tested;

[0013] Gas sensor, used to collect the dissolved gas composition and content in the insulating oil sample to be tested;

[0014] A dielectric constant acquisition unit is used to acquire the dielectric constant of the insulating oil sample to be tested;

[0015] A moisture sensor is used to collect the moisture content of the insulating oil sample to be tested;

[0016] Among them, the multi-dimensional parameters include breakdown voltage, dissolved gas composition and content, dielectric constant and moisture content.

[0017] Optionally, the insulating oil aging detection device further includes:

[0018] Spectrometer, used to analyze the insulating oil sample to be tested and obtain the chemical composition and content of the insulating oil sample to be tested;

[0019] Among them, the main controller is also used to receive the chemical composition and content of the insulating oil sample to be tested, and evaluate the aging degree of the insulating oil sample to be tested based on multi-dimensional parameters and the chemical composition and content of the insulating oil sample to be tested.

[0020] Optionally, the insulating oil aging detection device further includes:

[0021] A driving pump is used to transport the insulating oil sample to be tested to the insulating oil tank;

[0022] The internal transmission detection pipeline is installed between the outlet of the driving pump and the inlet of the insulating oil tank, and is used to connect the driving pump and the insulating oil tank.

[0023] Optionally, the insulating oil aging detection device further includes:

[0024] Sample filter, used for filtering the insulating oil sample to be tested;

[0025] The degassing equipment is used to degas the insulating oil sample to be tested after filtering.

[0026] An insulating oil aging detection method comprises the following steps:

[0027] Sampling the insulating oil to be tested by a sampling device to obtain a sample of the insulating oil to be tested;

[0028] The insulating oil sample to be tested is stored in the insulating oil tank;

[0029] The multi-dimensional parameter acquisition component installed in the insulating oil tank collects multi-dimensional parameters associated with the aging degree of the insulating oil sample to be tested and feeds them back to the main controller;

[0030] The multi-dimensional parameters are received by the main controller, and the aging degree of the insulating oil sample to be tested is evaluated based on the multi-dimensional parameters.

[0031] Optionally, the specific method for collecting multi-dimensional parameters associated with the aging degree of the insulating oil sample to be tested comprises the following steps:

[0032] The breakdown voltage of the insulating oil sample to be tested is collected by a voltage sensor;

[0033] The gas sensor is used to collect the dissolved gas composition and content in the insulating oil sample to be tested;

[0034] The dielectric constant of the insulating oil sample to be tested is collected by a dielectric constant collection unit;

[0035] The moisture content of the insulating oil sample to be tested is collected by a moisture sensor;

[0036] Among them, the multi-dimensional parameters include breakdown voltage, dissolved gas composition and content, dielectric constant and moisture content.

[0037] Optionally, the insulating oil aging detection method further comprises the following steps:

[0038] The insulating oil sample to be tested is analyzed by a spectrometer to obtain the chemical composition and content of the insulating oil sample to be tested;

[0039] Among them, the main controller receives the chemical composition and content of the insulating oil sample to be tested, and evaluates the aging degree of the insulating oil sample to be tested based on multi-dimensional parameters and the chemical composition and content of the insulating oil sample to be tested.

[0040] An insulating oil aging detection device, comprising:

[0041] Controller;

[0042] A memory storing executable instructions;

[0043] The executable instructions can be run on the controller and implement the insulating oil aging detection method.

[0044] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the insulating oil aging detection method is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0046] Figure 1 It is a schematic diagram of the overall structure of an insulating oil aging detection device in one embodiment of the present invention;

[0047] Figure 2 It is a schematic diagram of the overall process of an insulating oil aging detection method in one embodiment of the present invention;

[0048] Figure 3 It is a flowchart of a specific method for collecting multi-dimensional parameters in one embodiment of the present invention. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with its embodiments. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the protection scope of the present invention.

[0050] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0052] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0053] Embodiment 1:

[0054] This embodiment provides an insulating oil aging detection device, such as Figure 1 As shown, it includes acquisition equipment, insulating oil tank, multi-dimensional parameter acquisition components and a main controller.

[0055] The sampling device is used to sample the insulating oil to be tested and obtain the insulating oil sample to be tested. The sampling device is mainly responsible for sampling the insulating oil to be tested to ensure the representativeness and accuracy of the insulating oil sample to be tested. Specifically, the sampling device responds to the sampling instruction of the main controller and samples the insulating oil to be tested from the transformer tank.

[0056] The insulating oil tank is used to store the insulating oil sample to be tested. The multi-dimensional parameter acquisition component is installed in the insulating oil tank to collect multi-dimensional parameters associated with the aging degree of the insulating oil sample to be tested and feed them back to the main controller.

[0057] The multi-dimensional parameter collection components in the insulating oil tank mainly include various sensors, which collect in real time various aging performance indicators such as the insulating oil sample to be tested, dissolved gas concentration, moisture content, breakdown voltage, dielectric constant, etc.

[0058] Specifically, the multi-dimensional parameter acquisition component includes a voltage sensor, a gas sensor, a dielectric constant acquisition unit and a moisture sensor. Accordingly, the multi-dimensional parameters include breakdown voltage, dissolved gas composition and content, dielectric constant and moisture content.

[0059] The voltage sensor is used to collect the breakdown voltage of the insulating oil sample to be tested; when voltage is applied to the insulating oil sample to be tested, the voltage sensor can sense and measure the voltage change in real time. When the voltage reaches the breakdown voltage of the insulating oil sample to be tested, the voltage sensor accurately records the voltage value at this time, which can be used to measure the breakdown voltage of the insulating oil sample to be tested. The breakdown voltage is a measure of the ability of insulating oil to withstand voltage inside electrical equipment, and is an important indicator for judging the electrical strength of insulating oil. Therefore, the voltage sensor can be used to monitor the voltage value when the insulating oil breaks down under specific conditions, and detect whether the insulating performance of the insulating oil has decreased.

[0060] The gas sensor is used to collect the composition and content of dissolved gases in the insulating oil sample to be tested. Since the insulating oil will produce different gases such as hydrogen, methane, ethane, acetylene, etc. under conditions of aging, overheating, and discharge, the gas sensor can be used to analyze the composition and content of dissolved gases in the insulating oil sample to be tested, and further determine the degree of aging of the insulating oil and whether there is an internal fault.

[0061] The dielectric constant acquisition unit is used to acquire the dielectric constant of the insulating oil sample to be tested.

[0062] Since the insulating oil tank has good sealing performance, electrodes are installed around it to form the dielectric constant acquisition unit, which can form a uniform electric field in the insulating oil tank, so that the insulating oil sample to be tested is in a uniform electric field environment. By measuring the phase difference between the current and voltage of the insulating oil sample to be tested under the action of the AC electric field, the dielectric loss tangent value of the insulating oil sample to be tested is calculated, thereby obtaining the dielectric loss information of the insulating oil sample to be tested, thereby obtaining the dielectric loss performance of the insulating oil sample to be tested. For example, if the dielectric loss is too large, it means that the insulation performance of the insulating oil sample to be tested is reduced, and there may be problems such as aging or pollution, so as to realize the evaluation of the insulation performance and aging degree of the insulating oil sample to be tested.

[0063] The moisture sensor is used to collect the moisture content of the insulating oil sample to be tested. Since moisture is an important factor affecting the aging of insulating oil, it accelerates the aging and degradation of oil products and affects the dielectric properties of oil products. The moisture sensor can accurately measure the presence of trace moisture in the insulating oil, help determine the aging degree of the insulating oil and whether it needs to be dried.

[0064] The main controller is used to receive multi-dimensional parameters and detect and evaluate the aging degree of the insulating oil sample to be tested based on the multi-dimensional parameters.

[0065] Since the signals detected by various sensors are relatively weak, in order to ensure the real-time and accuracy of the detection results, the insulating oil aging detection device also includes a signal processor. The signal processor mainly includes a signal receiver, a signal amplifier, an analog-to-digital converter, and a filter. The signal receiver receives the weak signals collected by various sensors. Since the collected sensor signals are usually weak and have certain noise and interference, it is necessary to use a signal amplifier to appropriately amplify the weak signals, and then use a filter to remove the noise and interference in the signal to make the signal clearer. Finally, this series of analog signals are converted into digital signals through an analog converter for further processing and analysis by the main controller.

[0066] Preferably, the insulating oil aging detection device further comprises a temperature sensor installed in the insulating oil tank for detecting the temperature of the insulating oil sample to be detected. The temperature sensor uses the principle that the physical properties of temperature-sensitive materials change with temperature to monitor the temperature of the insulating oil sample to be detected in real time, and the temperature has an important influence on the performance of the insulating oil. For example, the increase in temperature will cause the viscosity of the insulating oil to decrease, the electrical properties to change, etc., thereby providing temperature parameters for evaluating the aging state of the insulating oil.

[0067] The temperature sensor is connected to the main controller and feeds back the detected temperature of the insulating oil sample to be tested to the main controller. The main controller can determine the aging degree of the insulating oil sample to be tested by analyzing the changes of the insulating oil sample to be tested, including the heating rate, cooling rate, and energy consumption per degree Celsius increase of the insulating oil sample to be tested.

[0068] As the control center of the equipment, the main controller is mainly responsible for coordinating the workflow of the entire device, controlling and scheduling the entire detection process, and has built-in detection processes and parameters to drive the entire device to automatically complete sampling, pretreatment, detection and analysis steps without human intervention. When abnormal phenomena such as excessive aging of insulating oil are detected, the alarm system is automatically triggered to send alarm information to the remote monitoring center, realizing automated control of the detection process, enabling real-time monitoring of the detection process and fault warning, simplifying the operating process, reducing operating difficulty, and improving detection accuracy and efficiency.

[0069] The insulating oil aging detection device realizes comprehensive real-time detection of the entire insulating oil aging key aging index detection process by adopting the coordinated cooperation of temperature sensors, voltage sensors, gas sensors, moisture sensors, electrodes and signal processors as well as spectrometers, and can quickly and automatically complete the steps of sampling, detection, analysis, judgment, etc., thereby improving the real-time and accuracy of detection.

[0070] In the insulating oil aging detection device, multi-dimensional parameters associated with the aging degree of the insulating oil sample to be detected are collected by a multi-dimensional parameter collection component and fed back to a main controller, and the main controller detects and evaluates the aging degree of the insulating oil sample to be detected based on the multi-dimensional parameters. The aging of the insulating oil is detected and evaluated based on different aging indicators, which can overcome the problem that the traditional insulating oil aging detection method detects and evaluates the aging of the insulating oil through a single aging indicator, which is not comprehensive and has the possibility of misjudgment.

[0071] As a preferred technical solution, the insulating oil aging detection device also includes a spectrometer.

[0072] The spectrometer is used to analyze the insulating oil sample to be tested and obtain the chemical composition and content of the insulating oil sample to be tested.

[0073] The spectrometer works in conjunction with the main controller and signal processor to analyze various components in the insulating oil sample to be tested. For example, the composition of the insulating oil can be analyzed based on the different light absorption characteristics of different dissolved gases after treatment, thereby identifying aging products and evaluating the insulating performance of the insulating oil.

[0074] Among them, the main controller is also used to receive the chemical composition and content of the insulating oil sample to be tested, and evaluate the aging degree of the insulating oil sample to be tested based on multi-dimensional parameters and the chemical composition and content of the insulating oil sample to be tested.

[0075] As a preferred technical solution, the insulating oil aging detection device also includes a driving pump and a memory transmission detection pipeline.

[0076] The driving pump is used to transport the insulating oil sample to be tested to the insulating oil tank; the internal transmission detection pipeline is installed between the outlet of the driving pump and the inlet of the insulating oil tank, and is used to connect the driving pump and the insulating oil tank.

[0077] The insulating oil aging detection device also includes a sample filter and a degassing device.

[0078] The sample filter is used to filter the insulating oil sample to be tested; the degassing equipment is used to degas the insulating oil sample to be tested after the filtering process.

[0079] The sample filter and degassing equipment are used to filter and degas the insulating oil sample to be tested, so as to eliminate the influence of external factors such as impurities and bubbles on the test results. The pretreated insulating oil sample to be tested is driven by a pump to control the flow rate and flow velocity of the insulating oil sample to be tested, ensuring that the insulating oil can flow stably and uniformly in the internal transmission test pipeline. When the insulating oil sample to be tested enters the insulating oil tank, various sensors in the insulating oil tank collect various aging performance indicators such as temperature signals, dissolved gas concentration, moisture content, breakdown voltage, and dielectric constant in real time.

[0080] This embodiment also provides a method for detecting aging of insulating oil. Figure 2 As shown, it includes the following steps:

[0081] S1, sampling from the insulating oil to be tested by a sampling device to obtain the insulating oil sample to be tested.

[0082] S2, storing the insulating oil sample to be tested in the insulating oil tank.

[0083] S3, collecting multi-dimensional parameters associated with the aging degree of the insulating oil sample to be tested through a multi-dimensional parameter collection component installed in the insulating oil tank and feeding back to the main controller.

[0084] S4, receiving the multi-dimensional parameters through the main controller, and detecting and evaluating the aging degree of the insulating oil sample to be tested based on the multi-dimensional parameters.

[0085] Optionally, in step S3, Figure 3 As shown, the specific method for collecting multi-dimensional parameters associated with the aging degree of the insulating oil sample to be tested includes the following steps:

[0086] S31, collecting the breakdown voltage of the insulating oil sample to be tested through a voltage sensor;

[0087] S32, collecting the dissolved gas composition and content in the insulating oil sample to be tested through a gas sensor;

[0088] S33, collecting the dielectric constant of the insulating oil sample to be tested by a dielectric constant collection unit;

[0089] S34, collecting the moisture content of the insulating oil sample to be tested through a moisture sensor;

[0090] Among them, the multi-dimensional parameters include breakdown voltage, dissolved gas composition and content, dielectric constant and moisture content.

[0091] The insulating oil aging detection method also includes the following steps: analyzing the insulating oil sample to be detected by a spectrometer to obtain the chemical composition and content of the insulating oil sample to be detected; wherein the main controller receives the chemical composition and content of the insulating oil sample to be detected, and evaluates the aging degree of the insulating oil sample to be detected based on the multi-dimensional parameters and the chemical composition and content of the insulating oil sample to be detected.

[0092] The insulating oil aging detection method realizes comprehensive real-time detection of the entire insulating oil aging key aging index detection process by adopting the coordinated cooperation of temperature sensors, voltage sensors, gas sensors, moisture sensors, electrodes and signal processors as well as spectrometers, and can quickly and automatically complete the steps of sampling, detection, analysis, judgment, etc., thereby improving the real-time and accuracy of detection.

[0093] In the insulating oil aging detection method, multi-dimensional parameters associated with the aging degree of the insulating oil sample to be detected are collected by a multi-dimensional parameter acquisition component and fed back to a main controller, and the main controller detects and evaluates the aging degree of the insulating oil sample to be detected based on the multi-dimensional parameters. The insulating oil aging condition is detected and evaluated based on different aging indicators, which can overcome the problem that the traditional insulating oil aging detection method detects and evaluates the aging condition of the insulating oil through a single aging indicator, which is not comprehensive enough and has the possibility of misjudgment.

[0094] This embodiment also provides an insulating oil aging detection device, which includes: a controller; a memory storing executable instructions; wherein the executable instructions can be run on the controller and implement the insulating oil aging detection method.

[0095] This embodiment also provides a computer-readable storage medium storing a computer program, and the computer program implements the insulating oil aging detection method when executed by a processor.

[0096] Embodiment 2:

[0097] It should be understood that this embodiment at least includes all the technical features of the above embodiments, and is further described in detail based on the above embodiments.

[0098] In this embodiment,

[0099] In this embodiment, the insulating oil aging detection device further includes an alarm, a communication device, a touch screen, a power supply, an installation protection device and a waste oil recovery device. The alarm, the communication device, the touch screen, the power supply and the safety protection device are all electrically connected to the main controller.

[0100] The alarm has a real-time alarm function, which can promptly detect and report insulating oil aging problems. Once it is detected that the insulating oil aging degree exceeds the standard, the alarm is automatically triggered, and the alarm information can be sent to the remote monitoring center through the communication equipment to remind relevant personnel to pay more attention and carefully detect; the communication equipment can be used for wireless communication with smart phones or other Bluetooth devices to achieve data synchronization, APP function expansion and remote control functions; the main controller displays the relevant aging performance indicators and aging status through the touch screen. The simple and intuitive touch screen design provides a platform for user operation and result viewing. Users can view the aging status of the insulating oil, historical data trends and early warning information in real time through the touch screen, and support users to perform operation control and data download, data management and other operations, thereby avoiding complex mechanical operations and visual interference. In addition, the aging degree of the insulating oil, key physical and chemical parameters and analysis results can be displayed in real time; the power supply can provide a stable power supply for the entire device, and the power supply has a grounding protection connection. At the same time, the device is also equipped with necessary safety protection equipment. If the insulating oil aging detection device itself is found to be abnormal (such as oil leakage, leakage, etc.) or the equipment working conditions are abnormal (such as large changes in real-time detection results, etc.), the safety protection equipment will immediately send out an alarm signal through the alarm to notify the operator to take measures to ensure the safety of the operator and the stable operation of the equipment. In order to protect the environment and save resources, the insulating oil samples to be tested are recycled and processed through the waste oil recovery equipment.

[0101] The device is equipped with necessary safety protection equipment, communication equipment and alarms, which fully protects the safety of operators and equipment operation. It adopts a simple and intuitive touch screen design to provide a platform for user operation and result viewing. Users can view the aging status, historical data trends and early warning information of the insulating oil in real time through the touch screen, which supports users to perform operation control, data download, data management and other operations, thus avoiding complex mechanical operations and visual interference. It can also display the aging degree of the insulating oil, key physical and chemical parameters and analysis results in real time. Through the waste oil recovery equipment, the insulating oil samples to be tested can be recycled and processed again to protect the environment and save resources.

[0102] Embodiment three:

[0103] It should be understood that this embodiment at least includes all the technical features of the above embodiments, and is further described in detail based on the above embodiments.

[0104] In this embodiment, the dielectric constant acquisition unit includes two detection electrode plates placed in the insulating oil sample to be detected, an energy storage capacitor for calculating the charge number of the detection electrode plates, and a voltage detection sensor for obtaining the voltage values ​​of the two detection electrode plates. That is, the two ends of the energy storage capacitor are electrically connected to the two detection electrode plates respectively, and the voltage detection sensor is connected in parallel with the two detection electrode plates to obtain the voltage values ​​of the two detection electrode plates. During detection, an alternating electric field is applied to the insulating oil sample to be detected to generate induced charges on the two detection electrode plates.

[0105] Therefore, the dielectric constant of the insulating oil sample to be tested is Wherein, k represents the electrostatic force constant, d represents the distance between the two detection electrode plates, Q=U'C represents the charge of the detection electrode plates calculated by the energy storage capacitor, U' represents the voltage value of the energy storage capacitor, C represents the capacitance value of the energy storage capacitor, S represents the facing area of ​​the two detection electrode plates, and U represents the voltage value of the two detection electrode plates detected by the voltage detection sensor. The main controller obtains the distance between the two detection electrode plates, the charge of the detection electrode plates, the voltage value of the energy storage capacitor, the capacitance value of the energy storage capacitor, the facing area of ​​the two detection electrode plates, the voltage value of the two detection electrode plates detected by the voltage detection sensor, and the formula The dielectric constant of the insulating oil sample to be tested is preliminarily calculated. The main controller pre-stores the dielectric constant ε' of the new insulating oil and calculates the estimated aging degree of the insulating oil sample to be tested. In this way, the dielectric constant acquisition unit can be used to quickly detect the dielectric constant of the insulating oil sample to be tested, and the aging degree of the insulating oil sample to be tested can be obtained simply and conveniently.

[0106] As a preferred technical solution, in step S4, the specific method for evaluating the aging degree of the insulating oil sample to be tested according to multi-dimensional parameter detection includes the following steps:

[0107] S41, obtain the breakdown voltage u1 of the new insulating oil and calculate the first aging degree Among them, u2 represents the breakdown voltage of the insulating oil sample to be tested, and a represents the breakdown voltage adjustment coefficient, which can be set by the technician.

[0108] S42, calculate the second aging degree according to the dissolved gas composition and content Where n represents the number of dissolved gas components, SC i Indicates the content of the i-th dissolved gas, SC i ' represents the standard content of the i-th dissolved gas, α i Represents the composition adjustment coefficient of the i-th dissolved gas, which is set by technical personnel.

[0109] S43, calculating the third aging degree according to the moisture content wc' of the new insulating oil and the moisture content wc of the insulating oil sample to be tested Wherein, b represents the moisture adjustment coefficient, which can be set by technical personnel.

[0110] S44, calculate the final aging degree AD'=(AD×β+AD1×β1+AD2×β2+AD3×β3) / 4, β, β1, β2, β3 represent the estimated aging degree correction value, the first aging degree correction value, the second aging degree correction value, and the third aging degree correction value, which can be set by the technician.

[0111] The final aging degree is calculated by AD'=(AD×β+AD1×β1+AD2×β2+AD3×β3) / 4, which comprehensively considers the multi-dimensional parameters related to the aging degree of the insulating oil sample to be tested. It can comprehensively detect and evaluate the aging of the insulating oil based on different aging indicators. It overcomes the problem that the traditional insulating oil aging detection method evaluates the aging of the insulating oil through a single aging indicator, which is not comprehensive and has the possibility of misjudgment, and further improves the accuracy of the insulating oil aging degree detection.

[0112] As a preferred technical solution, after calculating the first aging degree, the second aging degree and the third aging degree, the number of distance adjustment of the two detection electrode plates is obtained based on the first aging degree, the second aging degree and the third aging degree. represents the rounding up function, N represents the preset number of basic adjustments, at this time, the estimated aging degree ε i = ε0 represents the dielectric constant of the insulating oil sample to be tested calculated after the i-th distance adjustment, and ε1 represents the dielectric constant of the insulating oil sample to be tested calculated when the distance between the two electrode plates is not adjusted. At this time, the final aging degree AD' = (AD×β+AD1×β1+AD2×β2+AD3×β3) / 4.

[0113] Since the temperature of the insulating oil sample to be tested may vary to a certain extent, the detected dielectric constant will be different, and the slight difference in impurities, moisture and chemical composition of the insulating oil sample to be tested will also affect the detection of the dielectric constant. By adjusting the distance between the two detection electrode plates multiple times, the average of the dielectric constants of the insulating oil samples to be tested is used as the estimated aging degree, which can undoubtedly improve the accuracy of the dielectric constant, thereby improving the accuracy of the insulating oil aging degree detection.

[0114] In addition, the distance adjustment times of the two detection electrode plates It shows that as the average values ​​of the first aging degree, the second aging degree and the third aging degree increase, that is, the aging degree of the insulating oil obtained based on the breakdown voltage, dissolved gas content and moisture content of the insulating oil sample to be tested increases, the number of distance adjustments of the two detection electrode plates increases accordingly. Based on this idea, when the insulating oil is seriously aged, the number of times the dielectric constant of the insulating oil sample to be tested can be increased accordingly, and the accuracy of the insulating oil aging degree detection can be gradually improved, so that the technicians can take measures to ensure the safe and stable operation of the transformer. Correspondingly, when the insulating oil is not seriously aged, the number of times the distance between the two detection electrode plates is appropriately reduced can reduce the workload on the basis of ensuring a certain accuracy of the insulating oil aging degree detection.

[0115] In addition, the specific method for evaluating the aging degree of the insulating oil sample to be tested based on the multi-dimensional parameters and the chemical composition and content of the insulating oil sample to be tested comprises the following steps: calculating the content CC of different types of chemical components of the insulating oil sample to be tested detected by the spectrometer i The standard content of chemical composition of different types of corresponding insulating oil new products CC i 'The ratio between them, get the fourth aging degree m represents the number of types of chemical components of the insulating oil sample to be tested, λ i In this case, the final aging degree AD'=(AD×β+AD1×β1+AD2×β2+AD3×β3+AD4×β4) / 5, β4 represents the fourth aging degree correction value.

[0116] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0117] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An insulating oil aging detection device, characterized in that: The insulating oil aging detection device comprises: A sampling device, used for sampling from the insulating oil to be tested, and obtaining the insulating oil sample to be tested; Insulating oil tank, used to store insulating oil samples to be tested; A multi-dimensional parameter acquisition component is installed in the insulating oil tank and is used to collect multi-dimensional parameters associated with the aging degree of the insulating oil sample to be tested and feed them back to the main controller; The main controller is used to receive multi-dimensional parameters and detect and evaluate the aging degree of the insulating oil sample to be tested based on the multi-dimensional parameters.

2. The insulating oil aging detection device according to claim 1, characterized in that: The multi-dimensional parameter acquisition component includes: A voltage sensor, used to collect the breakdown voltage of the insulating oil sample to be tested; Gas sensor, used to collect the dissolved gas composition and content in the insulating oil sample to be tested; A dielectric constant acquisition unit is used to acquire the dielectric constant of the insulating oil sample to be tested; A moisture sensor is used to collect the moisture content of the insulating oil sample to be tested; Among them, the multi-dimensional parameters include breakdown voltage, dissolved gas composition and content, dielectric constant and moisture content.

3. The insulating oil aging detection device according to claim 2, characterized in that: The insulating oil aging detection device also includes: Spectrometer, used to analyze the insulating oil sample to be tested and obtain the chemical composition and content of the insulating oil sample to be tested; Among them, the main controller is also used to receive the chemical composition and content of the insulating oil sample to be tested, and evaluate the aging degree of the insulating oil sample to be tested based on multi-dimensional parameters and the chemical composition and content of the insulating oil sample to be tested.

4. The insulating oil aging detection device according to claim 3, characterized in that: The insulating oil aging detection device also includes: A driving pump is used to transport the insulating oil sample to be tested to the insulating oil tank; The internal transmission detection pipeline is installed between the outlet of the driving pump and the inlet of the insulating oil tank, and is used to connect the driving pump and the insulating oil tank.

5. The insulating oil aging detection device according to claim 4, characterized in that: The insulating oil aging detection device also includes: Sample filter, used for filtering the insulating oil sample to be tested; The degassing equipment is used to degas the insulating oil sample to be tested after filtering.

6. A method for detecting aging of insulating oil, characterized in that: The insulating oil aging detection method comprises the following steps: Sampling the insulating oil to be tested by a sampling device to obtain a sample of the insulating oil to be tested; The insulating oil sample to be tested is stored in the insulating oil tank; The multi-dimensional parameter acquisition component installed in the insulating oil tank collects multi-dimensional parameters associated with the aging degree of the insulating oil sample to be tested and feeds them back to the main controller; The multi-dimensional parameters are received by the main controller, and the aging degree of the insulating oil sample to be tested is evaluated based on the multi-dimensional parameters.

7. The insulating oil aging detection method according to claim 6, characterized in that: The specific method for collecting multi-dimensional parameters associated with the aging degree of the insulating oil sample to be tested comprises the following steps: The breakdown voltage of the insulating oil sample to be tested is collected by a voltage sensor; The gas sensor is used to collect the dissolved gas composition and content in the insulating oil sample to be tested; The dielectric constant of the insulating oil sample to be tested is collected by a dielectric constant collection unit; The moisture content of the insulating oil sample to be tested is collected by a moisture sensor; Among them, the multi-dimensional parameters include breakdown voltage, dissolved gas composition and content, dielectric constant and moisture content.

8. The insulating oil aging detection method according to claim 7, characterized in that: The insulating oil aging detection method also includes the following steps: The insulating oil sample to be tested is analyzed by a spectrometer to obtain the chemical composition and content of the insulating oil sample to be tested; Among them, the main controller receives the chemical composition and content of the insulating oil sample to be tested, and evaluates the aging degree of the insulating oil sample to be tested based on multi-dimensional parameters and the chemical composition and content of the insulating oil sample to be tested.

9. An insulating oil aging detection device, characterized in that: The insulating oil aging detection equipment comprises: Controller; A memory storing executable instructions; The executable instructions can be run on the controller and implement the insulating oil aging detection method according to any one of claims 6 to 8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the insulating oil aging detection method according to any one of claims 6 to 8 is implemented.

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