System platform and method for detecting dissolved gas in transformer oil online monitoring device

Abstract

The present invention proposes a system platform for an online monitoring device for detecting dissolved gas in transformer oil, comprising an integrated information acquisition module, a data analysis module, a data calculation module, a detection module and a server connected to the above modules; when performing detection, the detection module, under the control of the server, introduces a quantitative mixed standard gas for detection into the transformer, and the integrated information acquisition module obtains gas component information of the introduced gas; when the mixed standard gas is discharged from the transformer outlet, the integrated information acquisition module obtains the change data of the mixed gas when passing through the transformer, and sends it to the data analysis module for data analysis; then the analysis result is sent to the data calculation module for data calculation; the detection reference value of the monitoring device is obtained, and then the reference value is sent to the server for analysis to evaluate the accuracy of the gas online monitoring device; the present invention can judge the accuracy of the online monitoring device in monitoring the gas dissolution process.

Description

Technical Field

[0001] The invention relates to the technical field of dissolved gas online monitoring device detection, in particular to a system platform and a method for detecting dissolved gas online monitoring devices in transformer oil. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, secondary coil and iron core (magnetic core). Its main functions include: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc.

[0003] Transformers can be divided into the following categories according to their uses: distribution transformers, power transformers, fully sealed transformers, combined transformers, dry-type transformers, oil-immersed transformers, single-phase transformers, electric furnace transformers, rectifier transformers, reactors, anti-interference transformers, lightning protection transformers, box-type transformer test transformers, corner transformers, high current transformers, excitation transformers, etc.

[0004] Transformers are basic equipment for power transmission and distribution, and are widely used in industries, agriculture, transportation, urban communities and other fields. There are about 17 million transformers in operation in my country, with a total capacity of about 11 billion kilovolt-amperes. Transformer losses account for about 40% of power transmission and distribution losses, and have great energy-saving potential. In order to accelerate the promotion and application of high-efficiency and energy-saving transformers, improve the efficiency of energy resource utilization, and promote green, low-carbon and high-quality development, during the use of transformers, part of the gas will be dissolved in the oil inside, and the gas will be detected through the system platform of the dissolved gas online monitoring device.

[0005] In the prior art, when an online monitoring device monitors a transformer, it usually determines changes in the transformer during the gas dissolution process based on the monitoring data, that is, it performs fault diagnosis and analysis on the transformer's operating status through changes in the gas dissolved in the oil.

[0006] In the prior art, it is not possible to effectively monitor the online monitoring device during the detection process and determine the accuracy of its monitoring. Therefore, the present invention proposes a system platform for detecting an online monitoring device for dissolved gas in transformer oil. Summary of the invention

[0007] The present invention provides a system platform and method for detecting an online monitoring device for dissolved gas in transformer oil, which can determine the accuracy of the online monitoring device in monitoring the gas dissolution process.

[0008] The present invention adopts the following technical solutions.

[0009] The system platform of an online monitoring device for detecting dissolved gas in transformer oil can establish a detection platform for evaluating the performance of the online monitoring device based on the online monitoring device of the transformer, and the system platform includes an integrated information acquisition module, a data analysis module, a data calculation module, a detection module and a server; the integrated signal acquisition module, the data analysis module, the data calculation module and the detection module are respectively connected to the server data; when performing detection, the detection module, under the control of the server, introduces a quantitative mixed standard gas for detection into the transformer, and the integrated information acquisition module obtains the gas component information of the introduced gas; when the mixed standard gas is discharged from the transformer outlet, the integrated information acquisition module obtains the change data of the mixed gas when it passes through the transformer, and transmits the corresponding data to the data analysis module for data analysis; the gas component information and gas change information obtained by the analysis are transmitted to the data calculation module for data calculation; the detection reference value of the monitoring device is obtained, and then the detection reference value of the monitoring device is transmitted to the server for analysis, so as to evaluate the monitoring accuracy of the gas online monitoring device.

[0010] The gas component information of the mixed standard gas includes hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene; the gas change information includes temperature information and information on the change in the dissolution rate of the gas when passing through the transformer; the temperature information is the temperature detected and obtained by the online monitoring device for each gas when the mixed gas is discharged from the transformer outlet;

[0011] The online monitoring device is a gas online monitoring device for the transformer, which detects the introduced mixed gas and obtains the change information of the gas during the mixing process. The integrated information acquisition module obtains the gas component information of the introduced mixed gas, and transmits the gas information and change information of the mixed gas flowing through the transformer to the data analysis module for data analysis;

[0012] The specific method is as follows: suppose the working time period of dissolved gas in transformer oil is T time period, and within T time period, respectively obtain temperature information of hydrogen dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of hydrogen during dissolution process; obtain temperature information of carbon monoxide during dissolution process, and obtain multiple temperature values; obtain the maximum temperature value of carbon monoxide dissolution, obtain temperature information of carbon dioxide during dissolution process, and obtain multiple temperature values; obtain the maximum temperature value of carbon dioxide dissolution, obtain temperature information of methane during dissolution process, and obtain multiple temperature values; obtain the maximum temperature value of methane dissolution, obtain temperature information of ethylene during dissolution process, and obtain multiple temperature values; obtain the maximum temperature value of ethylene dissolution, obtain temperature information of ethane during dissolution process, obtain multiple temperature values, obtain the maximum temperature value of ethane dissolution, obtain temperature information of acetylene during dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of acetylene dissolution; and transmit the obtained temperature information to the data calculation module.

[0013] In the T time period, respectively obtain the gas dissolution rate change information during the hydrogen dissolution process, obtain multiple gas dissolution rate change values, and obtain the maximum gas dissolution rate change value during the hydrogen dissolution process;

[0014] Obtaining information on the change in gas dissolution rate of carbon monoxide during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of carbon monoxide dissolution;

[0015] Obtaining information on the change in gas dissolution rate of carbon dioxide during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change of carbon dioxide dissolution;

[0016] Obtaining information on the change in gas dissolution rate of methane during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of methane dissolution;

[0017] Obtaining information on the change in gas dissolution rate of ethylene during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of ethylene dissolution;

[0018] Obtaining information on the change in gas dissolution rate of ethane during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of ethane dissolution;

[0019] The gas dissolution rate change information of acetylene during the dissolution process is obtained, a plurality of gas dissolution rate change values ​​are obtained, and the maximum gas dissolution rate change value of acetylene dissolution is obtained; and the obtained gas dissolution rate change information is transmitted to the data calculation module.

[0020] When the data analysis module analyzes the gas information, the details are as follows:

[0021] According to the same characteristics of the solubility saturation values ​​of different gases dissolved in transformer oil, and the characteristic that the value of the saturation of the gas dissolved in the transformer oil obtained by the online monitoring device should be equal to the difference in volume of the gas before and after dissolution in the transformer oil, the working condition of the online monitoring device is detected;

[0022] The dissolved masses of hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane, and acetylene in transformer oil are obtained through an online monitoring device, and the dissolved mass value of hydrogen is set to: QQRJZLz; the dissolved mass value of carbon monoxide is: YYHTRJZLz; the dissolved mass value of carbon dioxide is: EYHTRJZLz; the dissolved mass value of methane is: JWRJZLz; the dissolved mass value of ethylene is: YXRJZLz; the dissolved mass value of ethane is: YWRJZLz; the dissolved mass value of acetylene is: YQRJZLz; the total dissolved mass of dissolved gas is obtained;

[0023] The density and the volume of the gas before the mixed gas is mixed are obtained, and the density and the volume of the gas after the mixed gas is mixed are obtained;

[0024] The method for obtaining gas density and gas volume by the online monitoring device is as follows: hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene are introduced into the transformer oil one by one, so that the volumes of the introduced hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene are the same. The online monitoring device includes a closed collector with the same volume as the introduced gas, an instrument for density detection of the mixed gas is arranged inside the collector, the mixed gas is collected at the transformer outlet, and the obtained density information is transmitted to the data calculation module.

[0025] When the data analysis module analyzes the change information, it is specifically as follows:

[0026] The online monitoring device is tested by comparing the changes in gas velocity and temperature of different mixed gases during mixing with the values ​​tested by the online monitoring device;

[0027] The server controls the online monitoring device to obtain the temperature information during the operation of the transformer, and obtains the maximum temperature changes during the dissolution of hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene gases, which are WDBHZ1, WDBHZ2, WDBHZ3, WDBHZ4, WDBHZ5, WDBHZ6 and WDBHZ7 respectively; the maximum dissolution rate of each gas during dissolution is obtained to obtain the gas dissolution rate change information, which are set as QTRJBHz1, QTRJBHz2, QTRJBHz3, QTRJBHz4, QTRJBHz5, QTRJBHz6 and QTRJBHz7 respectively; the analyzed gas information and change information are transmitted to the data calculation module, and the detection reference value of the monitoring device is obtained through data calculation; the change information is the change information of the internal temperature and speed of the dissolved gas in the transformer oil.

[0028] The data calculation module obtains the remaining hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene in the transformer oil, and sets the volume of the collected gas to be: SJQTTJz; the remaining hydrogen density is: SYQIMDz; the remaining carbon monoxide density is: SYYAHTMDz; the remaining carbon dioxide density is: SYEYHTMDz; the remaining methane density is: SYJWMDz; the remaining ethylene density is: SYYXMDz; the remaining ethane density is: SYJWMDz; the remaining acetylene density is: SYYQMDz;

[0029] Obtain the remaining gas mass reference value of the remaining mixed gas, and set the remaining gas mass reference value to: SYQTZLCKz;

[0030] The specific calculation is carried out according to the following formula:

[0031] SYQTZLCKz=SJQTTJz×SYQIMDz+SJQTTJz×SYYAHTMDz+SJQTTJz×SYEYHTMDz+SJQTTJz×SYJWMDz+SJQTTJz×SYYXMDz+SJQTTJz×SYJWMDz+SJQTTJz×SYYQMDz;

[0032] The integrated information acquisition module obtains the gas volume before mixing with a closed collector with the same volume as the introduced gas, and obtains the gas volume before mixing as: SJQTTJz; sets the hydrogen density before mixing as: QIMDz; the carbon monoxide density as: YAHTMDz; the carbon dioxide density as: EYHTMDz; the methane density as: JWMDz; the ethylene density as: YXMDz; the ethane density as: JWMDz; the acetylene density as: YQMDz; obtains the mixed gas mass reference value, and sets the mixed gas mass reference value as: HHQTCKz; the specific calculation is carried out according to the following formula:

[0033] HHQTCKz=SJQTTJz×QIMDz+SJQTTJz×YAHTMDz+SJQTTJz×

[0034] EYHTMDz+SJQTTJz×JWMDz+SJQTTJz×YXMDz+SJQTTJz×

[0035] JWMDz+SJQTTJz×YQMDz;

[0036] The mixed gas mass and the residual gas mass reference value are subtracted to obtain the dissolved gas mass reference value, and the dissolved gas mass reference value is set to: RJQTZLCKz; the specific calculation is performed according to the following formula: RJQTZLCKz = HHQTCKz - SYQTZLCKz;

[0037] The total dissolved mass of dissolved gas is obtained; the total dissolved gas mass is set to: RJQTZLZSz; the specific calculation is performed according to the following formula:

[0038] RJQTZLZSz=YYHTRJZLz+EYHTRJZLz+JWRJZLz+YXRJZLz+YWRJZLz+YQRJZLz.

[0039] The data calculation module receives the change information of the detection module, and sets the maximum temperature value of hydrogen in the T time period to be: QQWDZmax; the maximum temperature value of carbon monoxide to be: YYHTWDZmax; the maximum temperature value of carbon dioxide to be: EYHTWDZmax; the maximum temperature value of methane to be: JWWDZmax; the maximum temperature value of ethylene to be: YXWDZmax; the maximum temperature value of ethane to be: YWWDZmax; the maximum temperature value of acetylene to be: YQWDZmax;

[0040] The maximum gas dissolution rate change value of hydrogen in the T time period is: QQRJDZmax; the maximum gas dissolution rate change value of carbon monoxide is: YYHTRJDZmax; the maximum gas dissolution rate change value of carbon dioxide is: EYHTRJDZmax; the maximum gas dissolution rate change value of methane is: JWRJDZmax; the maximum gas dissolution rate change value of ethylene is: YXRJDZmax; the maximum gas dissolution rate change value of ethane is: YWRJDZmax; the maximum gas dissolution rate change value of acetylene is: YQRJDZmax;

[0041] The data calculation module obtains the temperature change reference value and the gas dissolution rate change reference value based on the change information obtained by the online monitoring device and the change information obtained by the detection module;

[0042] The reference value of the set temperature change is: WDBHCKz; the calculation formula is:

[0043] WDBHCKz=|WDBHZ1-QQWDZmax|×|WDBHZ2-YYHTWDZmax|×

[0044] |WDBHZ3-EYHTWDZmax|×|WDBHZ4-JWWDZmax|×|WDBHZ5-YXWDZmax|×|WDBHZ6-YWWDZmax|×|WDBHZ7-YQWDZmax|;

[0045] The reference value of the gas dissolution rate change is: RJDBHCKz; its calculation formula is:

[0046] RJDBHCKz=|QTRJBHz1-QQRJDZmax|×|QTRJBHz2-YYHTRJDZmax|×

[0047] |QTRJBHz3-EYHTRJDZmax|×|QTRJBHz4-JWRJDZmax|×

[0048] |QTRJBHz5-YXRJDZmax|×|QTRJBHz6-YWRJDZmax|×

[0049] |QTRJBHz7-YQRJDZmax|;

[0050] The data calculation module obtains the detection change value based on the temperature change reference value and the gas dissolution rate change reference value; the detection change value is set to: JCBHz; the following formula is used to obtain the detection change value:

[0051]

[0052] Where K is the balance coefficient, 1>K>0, and the obtained value is transmitted to the server;

[0053] The calculated detection reference value of the monitoring device is transmitted to the server, and the server analyzes the acquired detection reference value of the monitoring device to determine the monitoring accuracy of the gas online monitoring device;

[0054] If 0>JCZZJCCKz<2 / K, it is determined that the gas online monitoring device is accurate in detecting the gas solubility of the transformer; if JCZZJCCKz>2 / K, it is determined that the gas online monitoring device is inaccurate in detecting the gas solubility of the transformer;

[0055] The detection reference value of the monitoring device is obtained by analysis based on the dissolved gas mass reference value, the detection change value and the total dissolved gas mass; the online monitoring device is scored based on the monitoring reference value of the monitoring device, and the obtained value is transmitted to the server.

[0056] The method for using the system platform of the online monitoring device for detecting dissolved gas in transformer oil comprises the following steps;

[0057] Step S1: The integrated information acquisition module acquires information about changes in the gas during the mixing process, and the server controls the detection module to pass a volume of mixed gas within a specified range into the transformer to detect information about changes in the gas during the process of gas dissolution in the transformer;

[0058] Wherein: the change information includes temperature information and gas dissolution rate change information;

[0059] The temperature information indicates the temperature detected and obtained by the online monitoring device when mixing each gas;

[0060] Step S2: The gas online monitoring device detects the mixed gas introduced and acquires the change information of the gas during the mixing process, the integrated information acquisition module acquires the gas information of the mixed gas introduced, and transmits the gas information and change information to the data analysis module for data analysis;

[0061] Step S3: transmitting the analyzed gas information and change information to the data calculation module for data calculation; obtaining the detection reference value of the monitoring device;

[0062] Step S4: The calculated detection reference value of the monitoring device is transmitted to the server, and the server analyzes the acquired detection reference value of the monitoring device to determine the monitoring accuracy of the gas online monitoring device.

[0063] When detecting the change information in step S1, the specific steps are as follows:

[0064] Step S11: Obtaining temperature information and gas dissolution rate change information in the change information, specifically: obtaining temperature information during hydrogen dissolution in a time period T, obtaining multiple temperature values, and obtaining the maximum temperature value of hydrogen during the dissolution process.

[0065] Obtain the temperature information of carbon monoxide during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of carbon monoxide dissolution.

[0066] Obtain the temperature information of carbon dioxide during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of carbon dioxide dissolution.

[0067] Obtain the temperature information of methane during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of methane dissolution;

[0068] Step S12: Obtain the temperature information of ethylene during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of ethylene dissolution.

[0069] Obtain the temperature information of ethane during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of ethane dissolution.

[0070] Obtaining temperature information of acetylene during the dissolution process, obtaining multiple temperature values, and obtaining the maximum temperature value of acetylene dissolution; transmitting the obtained temperature information to the data calculation module;

[0071] Step S13: obtaining information on the change in gas dissolution rate during the hydrogen dissolution process, obtaining multiple gas dissolution rate change values, obtaining the maximum gas dissolution rate change value of hydrogen during the dissolution process, obtaining information on the change in gas dissolution rate during the carbon monoxide dissolution process, obtaining multiple gas dissolution rate change values, obtaining the maximum gas dissolution rate change value of carbon monoxide dissolution,

[0072] Obtain the gas dissolution rate change information of carbon dioxide during the dissolution process, obtain multiple gas dissolution rate change values, and obtain the maximum gas dissolution rate change of carbon dioxide dissolution.

[0073] Obtaining information on the change in gas dissolution rate of methane during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of methane dissolution;

[0074] Step S14: Obtaining information on the change in gas dissolution rate of ethylene during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of ethylene dissolution.

[0075] Obtain the gas dissolution rate change information of ethane during the dissolution process, obtain multiple gas dissolution rate change values, and obtain the maximum gas dissolution rate change value of ethane dissolution.

[0076] Obtaining information on the change in gas dissolution rate of acetylene during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of acetylene dissolution;

[0077] The acquired gas dissolution rate change information is transmitted to the data calculation module.

[0078] The present invention provides a system platform for detecting the dissolved gas on-line monitoring device in transformer oil. Based on the acquisition of internal gas information during the use of the transformer, multiple parameter information in the gas information is obtained for comprehensive analysis and evaluation, and the detection reference value of the monitoring device is obtained, which can determine the accuracy of the transformer online monitoring device in monitoring the gas dissolution process.

[0079] The beneficial effects of the present invention are:

[0080] 1. The present invention is based on the acquisition of internal gas information during the use of the transformer, obtains multiple parameter information in the gas information for comprehensive analysis and evaluation, obtains the detection reference value of the monitoring device, and determines the accuracy of the online monitoring device in monitoring the gas dissolution process in the transformer oil.

[0081] 2. The present invention analyzes and obtains the gas dissolution rate and the temperature change information during the dissolution process in combination with multiple numerical values, and compares the numerical values ​​obtained with those obtained by the online monitoring device to obtain the difference in the obtained numerical values, thereby determining whether the monitoring of the online monitoring device is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0083] Attached Figure 1 It is a schematic diagram of the principle of the present invention;

[0084] Attached Figure 2 It is a schematic diagram of the method steps of the present invention. DETAILED DESCRIPTION

[0085] As shown in the figure, the system platform of the online monitoring device for detecting dissolved gas in transformer oil can establish a detection platform for evaluating the performance of the online monitoring device based on the online monitoring device of the transformer, and the system platform includes an integrated information acquisition module, a data analysis module, a data calculation module, a detection module and a server; the integrated signal acquisition module, the data analysis module, the data calculation module and the detection module are respectively connected to the server data; when the detection is performed, the detection module, under the control of the server, introduces a quantitative mixed standard gas for detection into the transformer, and the integrated information acquisition module obtains the gas component information of the introduced gas; when the mixed standard gas is discharged from the transformer outlet, the integrated information acquisition module obtains the change data of the mixed gas when passing through the transformer, and transmits the corresponding data to the data analysis module for data analysis; the gas component information and gas change information obtained by the analysis are transmitted to the data calculation module for data calculation; the detection reference value of the monitoring device is obtained, and then the detection reference value of the monitoring device is transmitted to the server for analysis, so as to evaluate the accuracy of the monitoring of the gas online monitoring device.

[0086] The gas component information of the mixed standard gas includes hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene; the gas change information includes temperature information and information on the change in the dissolution rate of the gas when passing through the transformer; the temperature information is the temperature detected and obtained by the online monitoring device for each gas when the mixed gas is discharged from the transformer outlet;

[0087] The role of temperature information detection is: during the process of introducing mixed standard gas, the movement of the gas in the transformer oil will cause the temperature of the oil to change. When the temperature of the oil changes, the dissolution rate of the introduced mixed gas will also change. Therefore, the temperature generated by the introduction of mixed standard gas into the transformer oil will affect the detection accuracy of the online monitoring device. The detection of the online monitoring device is judged by analyzing the temperature information to further improve the monitoring accuracy.

[0088] The online monitoring device is a gas online monitoring device for the transformer, which detects the introduced mixed gas and obtains the change information of the gas during the mixing process. The integrated information acquisition module obtains the gas component information of the introduced mixed gas, and transmits the gas information and change information of the mixed gas flowing through the transformer to the data analysis module for data analysis;

[0089] The specific method is as follows: suppose the working time period of dissolved gas in transformer oil is T time period, and within T time period, respectively obtain temperature information of hydrogen dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of hydrogen during dissolution process; obtain temperature information of carbon monoxide during dissolution process, and obtain multiple temperature values; obtain the maximum temperature value of carbon monoxide dissolution, obtain temperature information of carbon dioxide during dissolution process, and obtain multiple temperature values; obtain the maximum temperature value of carbon dioxide dissolution, obtain temperature information of methane during dissolution process, and obtain multiple temperature values; obtain the maximum temperature value of methane dissolution, obtain temperature information of ethylene during dissolution process, and obtain multiple temperature values; obtain the maximum temperature value of ethylene dissolution, obtain temperature information of ethane during dissolution process, obtain multiple temperature values, obtain the maximum temperature value of ethane dissolution, obtain temperature information of acetylene during dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of acetylene dissolution; and transmit the obtained temperature information to the data calculation module.

[0090] In the T time period, respectively obtain the gas dissolution rate change information during the hydrogen dissolution process, obtain multiple gas dissolution rate change values, and obtain the maximum gas dissolution rate change value during the hydrogen dissolution process;

[0091] Obtaining information on the change in gas dissolution rate of carbon monoxide during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of carbon monoxide dissolution;

[0092] Obtaining information on the change in gas dissolution rate of carbon dioxide during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change of carbon dioxide dissolution;

[0093] Obtaining information on the change in gas dissolution rate of methane during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of methane dissolution;

[0094] Obtaining information on the change in gas dissolution rate of ethylene during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of ethylene dissolution;

[0095] Obtaining information on the change in gas dissolution rate of ethane during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of ethane dissolution;

[0096] The gas dissolution rate change information of acetylene during the dissolution process is obtained, a plurality of gas dissolution rate change values ​​are obtained, and the maximum gas dissolution rate change value of acetylene dissolution is obtained; and the obtained gas dissolution rate change information is transmitted to the data calculation module.

[0097] When the data analysis module analyzes the gas information, the details are as follows:

[0098] According to the same characteristics of the solubility saturation values ​​of different gases dissolved in transformer oil, and the characteristic that the value of the saturation of the gas dissolved in the transformer oil obtained by the online monitoring device should be equal to the difference in volume of the gas before and after dissolution in the transformer oil, the working condition of the online monitoring device is detected;

[0099] The dissolved masses of hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane, and acetylene in transformer oil are obtained through an online monitoring device, and the dissolved mass value of hydrogen is set to: QQRJZLz; the dissolved mass value of carbon monoxide is: YYHTRJZLz; the dissolved mass value of carbon dioxide is: EYHTRJZLz; the dissolved mass value of methane is: JWRJZLz; the dissolved mass value of ethylene is: YXRJZLz; the dissolved mass value of ethane is: YWRJZLz; the dissolved mass value of acetylene is: YQRJZLz; the total dissolved mass of dissolved gas is obtained;

[0100] The density and the volume of the gas before the mixed gas is mixed are obtained, and the density and the volume of the gas after the mixed gas is mixed are obtained;

[0101] The method for obtaining gas density and gas volume by the online monitoring device is as follows: hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene are introduced into the transformer oil one by one, so that the volumes of the introduced hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene are the same. The online monitoring device includes a closed collector with the same volume as the introduced gas, an instrument for density detection of the mixed gas is arranged inside the collector, the mixed gas is collected at the transformer outlet, and the obtained density information is transmitted to the data calculation module.

[0102] When the data analysis module analyzes the change information, it is specifically as follows:

[0103] The online monitoring device is tested by comparing the changes in gas velocity and temperature of different mixed gases during mixing with the values ​​tested by the online monitoring device;

[0104] The server controls the online monitoring device to obtain the temperature information during the operation of the transformer, and obtains the maximum temperature changes during the dissolution of hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene gases, which are WDBHZ1, WDBHZ2, WDBHZ3, WDBHZ4, WDBHZ5, WDBHZ6 and WDBHZ7 respectively; the maximum dissolution rate of each gas during dissolution is obtained to obtain the gas dissolution rate change information, which are set as QTRJBHz1, QTRJBHz2, QTRJBHz3, QTRJBHz4, QTRJBHz5, QTRJBHz6 and QTRJBHz7 respectively; the analyzed gas information and change information are transmitted to the data calculation module, and the detection reference value of the monitoring device is obtained through data calculation; the change information is the change information of the internal temperature and speed of the dissolved gas in the transformer oil.

[0105] The data calculation module obtains the remaining hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene in the transformer oil, and sets the volume of the collected gas to be: SJQTTJz; the remaining hydrogen density is: SYQIMDz; the remaining carbon monoxide density is: SYYAHTMDz; the remaining carbon dioxide density is: SYEYHTMDz; the remaining methane density is: SYJWMDz; the remaining ethylene density is: SYYXMDz; the remaining ethane density is: SYJWMDz; the remaining acetylene density is: SYYQMDz;

[0106] Obtain the remaining gas mass reference value of the remaining mixed gas, and set the remaining gas mass reference value to: SYQTZLCKz;

[0107] The specific calculation is carried out according to the following formula:

[0108] SYQTZLCKz=SJQTTJz×SYQIMDz+SJQTTJz×SYYAHTMDz+SJQTTJz×SYEYHTMDz+SJQTTJz×SYJWMDz+SJQTTJz×SYYXMDz+SJQTTJz×SYJWMDz+SJQTTJz×SYYQMDz;

[0109] The integrated information acquisition module obtains the gas volume before mixing with a closed collector with the same volume as the introduced gas, and obtains the gas volume before mixing as: SJQTTJz; sets the hydrogen density before mixing as: QIMDz; the carbon monoxide density as: YAHTMDz; the carbon dioxide density as: EYHTMDz; the methane density as: JWMDz; the ethylene density as: YXMDz; the ethane density as: JWMDz; the acetylene density as: YQMDz; obtains the mixed gas mass reference value, and sets the mixed gas mass reference value as: HHQTCKz; the specific calculation is carried out according to the following formula:

[0110] HHQTCKz=SJQTTJz×QIMDz+SJQTTJz×YAHTMDz+SJQTTJz×

[0111] EYHTMDz+SJQTTJz×JWMDz+SJQTTJz×YXMDz+SJQTTJz×

[0112] JWMDz+SJQTTJz×YQMDz;

[0113] The mixed gas mass and the residual gas mass reference value are subtracted to obtain the dissolved gas mass reference value, and the dissolved gas mass reference value is set to: RJQTZLCKz; the specific calculation is performed according to the following formula: RJQTZLCKz = HHQTCKz - SYQTZLCKz;

[0114] The total dissolved mass of dissolved gas is obtained; the total dissolved gas mass is set to: RJQTZLZSz; the specific calculation is performed according to the following formula:

[0115] RJQTZLZSz=YYHTRJZLz+EYHTRJZLz+JWRJZLz+YXRJZLz+YWRJZLz+YQRJZLz.

[0116] The data calculation module receives the change information of the detection module, and sets the maximum temperature value of hydrogen in the T time period to be: QQWDZmax; the maximum temperature value of carbon monoxide to be: YYHTWDZmax; the maximum temperature value of carbon dioxide to be: EYHTWDZmax; the maximum temperature value of methane to be: JWWDZmax; the maximum temperature value of ethylene to be: YXWDZmax; the maximum temperature value of ethane to be: YWWDZmax; the maximum temperature value of acetylene to be: YQWDZmax;

[0117] The maximum gas dissolution rate change value of hydrogen in the T time period is: QQRJDZmax; the maximum gas dissolution rate change value of carbon monoxide is: YYHTRJDZmax; the maximum gas dissolution rate change value of carbon dioxide is: EYHTRJDZmax; the maximum gas dissolution rate change value of methane is: JWRJDZmax; the maximum gas dissolution rate change value of ethylene is: YXRJDZmax; the maximum gas dissolution rate change value of ethane is: YWRJDZmax; the maximum gas dissolution rate change value of acetylene is: YQRJDZmax;

[0118] The data calculation module obtains the temperature change reference value and the gas dissolution rate change reference value based on the change information obtained by the online monitoring device and the change information obtained by the detection module;

[0119] The reference value of the set temperature change is: WDBHCKz; the calculation formula is:

[0120] WDBHCKz=|WDBHZ1-QQWDZmax|×|WDBHZ2-YYHTWDZmax|×

[0121] |WDBHZ3-EYHTWDZmax|×|WDBHZ4-JWWDZmax|×|WDBHZ5-YXWDZmax|×|WDBHZ6-YWWDZmax|×|WDBHZ7-YQWDZmax|;

[0122] The reference value of the gas dissolution rate change is: RJDBHCKz; its calculation formula is:

[0123] RJDBHCKz=|QTRJBHz1-QQRJDZmax|×|QTRJBHz2-YYHTRJDZmax|×

[0124] |QTRJBHz3-EYHTRJDZmax|×|QTRJBHz4-JWRJDZmax|×

[0125] |QTRJBHz5-YXRJDZmax|×|QTRJBHz6-YWRJDZmax|×

[0126] |QTRJBHz7-YQRJDZmax|;

[0127] The data calculation module obtains the detection change value based on the temperature change reference value and the gas dissolution rate change reference value; the detection change value is set to: JCBHz; the following formula is used to obtain the detection change value:

[0128]

[0129] Where K is the balance coefficient, 1>K>0, and the obtained value is transmitted to the server;

[0130] The calculated detection reference value of the monitoring device is transmitted to the server, and the server analyzes the acquired detection reference value of the monitoring device to determine the monitoring accuracy of the gas online monitoring device;

[0131] If 0>JCZZJCCKz<2 / K, it is determined that the gas online monitoring device is accurate in detecting the gas solubility of the transformer; if JCZZJCCKz>2 / K, it is determined that the gas online monitoring device is inaccurate in detecting the gas solubility of the transformer;

[0132] The detection reference value of the monitoring device is obtained by analysis based on the dissolved gas mass reference value, the detection change value and the total dissolved gas mass; the online monitoring device is scored based on the monitoring reference value of the monitoring device, and the obtained value is transmitted to the server.

[0133] The method for using the system platform of the online monitoring device for detecting dissolved gas in transformer oil comprises the following steps;

[0134] Step S1: The integrated information acquisition module acquires information about changes in the gas during the mixing process, and the server controls the detection module to pass a volume of mixed gas within a specified range into the transformer to detect information about changes in the gas during the process of gas dissolution in the transformer;

[0135] Wherein: the change information includes temperature information and gas dissolution rate change information;

[0136] The temperature information indicates the temperature detected and obtained by the online monitoring device when mixing each gas;

[0137] Step S2: The gas online monitoring device detects the mixed gas introduced and acquires the change information of the gas during the mixing process, the integrated information acquisition module acquires the gas information of the mixed gas introduced, and transmits the gas information and change information to the data analysis module for data analysis;

[0138] Step S3: transmitting the analyzed gas information and change information to the data calculation module for data calculation; obtaining the detection reference value of the monitoring device;

[0139] Step S4: The calculated detection reference value of the monitoring device is transmitted to the server, and the server analyzes the acquired detection reference value of the monitoring device to determine the monitoring accuracy of the gas online monitoring device.

[0140] When detecting the change information in step S1, the specific steps are as follows:

[0141] Step S11: Obtaining temperature information and gas dissolution rate change information in the change information, specifically: obtaining temperature information during hydrogen dissolution in a time period T, obtaining multiple temperature values, and obtaining the maximum temperature value of hydrogen during the dissolution process.

[0142] Obtain the temperature information of carbon monoxide during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of carbon monoxide dissolution.

[0143] Obtain the temperature information of carbon dioxide during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of carbon dioxide dissolution.

[0144] Obtain the temperature information of methane during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of methane dissolution;

[0145] Step S12: Obtain the temperature information of ethylene during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of ethylene dissolution.

[0146] Obtain the temperature information of ethane during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of ethane dissolution.

[0147] Obtaining temperature information of acetylene during the dissolution process, obtaining multiple temperature values, and obtaining the maximum temperature value of acetylene dissolution; transmitting the obtained temperature information to the data calculation module;

[0148] Step S13: obtaining information on the change in gas dissolution rate during the hydrogen dissolution process, obtaining multiple gas dissolution rate change values, obtaining the maximum gas dissolution rate change value of hydrogen during the dissolution process, obtaining information on the change in gas dissolution rate during the carbon monoxide dissolution process, obtaining multiple gas dissolution rate change values, obtaining the maximum gas dissolution rate change value of carbon monoxide dissolution,

[0149] Obtain the gas dissolution rate change information of carbon dioxide during the dissolution process, obtain multiple gas dissolution rate change values, and obtain the maximum gas dissolution rate change of carbon dioxide dissolution.

[0150] Obtaining information on the change in gas dissolution rate of methane during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of methane dissolution;

[0151] Step S14: Obtaining information on the change in gas dissolution rate of ethylene during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of ethylene dissolution.

[0152] Obtain the gas dissolution rate change information of ethane during the dissolution process, obtain multiple gas dissolution rate change values, and obtain the maximum gas dissolution rate change value of ethane dissolution.

[0153] Obtaining information on the change in gas dissolution rate of acetylene during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of acetylene dissolution;

[0154] The acquired gas dissolution rate change information is transmitted to the data calculation module.

[0155] In this example, the integrated information acquisition module and the transformer gas online monitoring device use a synchronous working mode to measure the introduction and export process of the mixed gas, and compare the measured values ​​of the two to evaluate the performance of the transformer online monitoring device based on the comparison results.

[0156] The above formulas in this example are all dimensionless and numerically calculated. The formula is a formula for the most recent real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters in the formula are set by technicians in this field according to actual conditions. For example, if there are weight coefficients and proportional coefficients, their set sizes are to quantify each parameter to obtain a specific value, which is convenient for subsequent comparison. The sizes of the weight coefficients and proportional coefficients can be determined as long as they do not affect the proportional relationship between the parameters and the quantized values.

[0157] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0158] It should be understood by those skilled in the art that the embodiments of the present invention can be provided as methods, systems or computer program products. Therefore, the present invention can be in the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention can be in the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program codes. Among them, the storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read Only Memory, referred to as EPROM), programmable read-only memory (Programmable Red-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, disk or optical disk. These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0159] The above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A system platform for detecting online monitoring devices for dissolved gas in transformer oil, which can establish a detection platform for evaluating the performance of online monitoring devices based on online monitoring devices of transformers, characterized by: The system platform includes an integrated information acquisition module, a data analysis module, a data calculation module, a detection module and a server; the integrated information acquisition module, the data analysis module, the data calculation module and the detection module are respectively connected to the server data; when performing detection, the detection module, under the control of the server, introduces a quantitative standard mixed gas for detection into the transformer, and the integrated information acquisition module obtains the gas component information of the introduced gas; when the standard mixed gas is discharged from the transformer outlet, the integrated information acquisition module obtains the change data of the standard mixed gas when it passes through the transformer, and transmits the corresponding data to the data analysis module for data analysis; the gas component information and gas change information obtained by the analysis are transmitted to the data calculation module for data calculation; Obtaining a detection reference value of the monitoring device, and then transmitting the detection reference value of the monitoring device to the server for analysis to evaluate the accuracy of monitoring of the gas online monitoring device; The method for using the system platform of the online monitoring device for detecting dissolved gas in transformer oil comprises the following steps; Step S1: The integrated information acquisition module acquires information about changes in the gas during the mixing process, and the server controls the detection module to pass a standard mixed gas of a specified volume range into the transformer to detect information about changes in the gas during the process of dissolving the gas in the transformer; Wherein: the change information includes temperature information and gas dissolution rate change information; The temperature information indicates the temperature detected and obtained by the online monitoring device when mixing each gas; Step S2: The standard mixed gas introduced is detected by the gas online monitoring device and the change information of the gas during the mixing process is obtained. The integrated information acquisition module obtains the gas information of the standard mixed gas introduced, and transmits the gas information and the change information to the data analysis module for data analysis; Step S3: transmitting the analyzed gas information and change information to the data calculation module for data calculation; obtaining the detection reference value of the monitoring device; Step S4: The calculated detection reference value of the monitoring device is transmitted to the server, and the server analyzes the acquired detection reference value of the monitoring device to determine the monitoring accuracy of the gas online monitoring device; The gas component information of the standard mixed gas includes hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene; the gas change information includes temperature information and information on the change in the dissolution rate of the gas when passing through the transformer; the temperature information is the temperature detected and obtained by the online monitoring device for each gas when the standard mixed gas is discharged from the transformer outlet; The online monitoring device is a gas online monitoring device for the transformer, which detects the standard mixed gas introduced and obtains the change information of the gas during the mixing process. The integrated information acquisition module obtains the gas component information of the standard mixed gas introduced, and transmits the gas information and change information of the standard mixed gas flowing through the transformer to the data analysis module for data analysis; The specific method is as follows: suppose the working time period of the dissolved gas in the transformer oil is T time period, and within the T time period, respectively obtain the temperature information of the hydrogen dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of the hydrogen during the dissolution process; obtain the temperature information of the carbon monoxide during the dissolution process, and obtain multiple temperature values; obtain the maximum temperature value of the carbon monoxide dissolution, obtain the temperature information of the carbon dioxide during the dissolution process, and obtain multiple temperature values; obtain the maximum temperature value of the carbon dioxide dissolution, obtain the temperature information of the methane during the dissolution process, and obtain multiple temperature values; obtain the maximum temperature value of the methane dissolution, obtain the temperature information of the ethylene during the dissolution process, and obtain multiple temperature values; obtain the maximum temperature value of the ethylene dissolution, obtain the temperature information of the ethane during the dissolution process, obtain multiple temperature values, obtain the maximum temperature value of the ethane dissolution, obtain the temperature information of the acetylene during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of the acetylene dissolution; and transmit the obtained temperature information to the data calculation module; In the T time period, respectively obtain the gas dissolution rate change information during the hydrogen dissolution process, obtain multiple gas dissolution rate change values, and obtain the maximum gas dissolution rate change value of hydrogen during the dissolution process; obtain the gas dissolution rate change information during the carbon monoxide dissolution process, obtain multiple gas dissolution rate change values, and obtain the maximum gas dissolution rate change value of carbon monoxide dissolution; Obtaining information on the change in gas dissolution rate of carbon dioxide during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change of carbon dioxide dissolution; Obtaining information on the change in gas dissolution rate of methane during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of methane dissolution; Obtaining information on the change in gas dissolution rate of ethylene during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of ethylene dissolution; Obtaining information on the change in gas dissolution rate of ethane during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of ethane dissolution; Obtaining information on the change in gas dissolution rate of acetylene during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining a maximum gas dissolution rate change value of acetylene dissolution; transmitting the obtained gas dissolution rate change information to a data calculation module; When the data analysis module analyzes the gas information, the details are as follows: According to the same characteristics of the solubility saturation values ​​of different gases dissolved in transformer oil, and the characteristic that the value of the saturation of the gas dissolved in the transformer oil obtained by the online monitoring device should be equal to the difference in volume of the gas before and after dissolution in the transformer oil, the working condition of the online monitoring device is detected; The dissolved masses of hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane, and acetylene in transformer oil are obtained through an online monitoring device, and the dissolved mass value of hydrogen is set to: QQRJZLz; the dissolved mass value of carbon monoxide is: YYHTRJZLz; the dissolved mass value of carbon dioxide is: EYHTRJZLz; the dissolved mass value of methane is: JWRJZLz; the dissolved mass value of ethylene is: YXRJZLz; the dissolved mass value of ethane is: YWRJZLz; the dissolved mass value of acetylene is: YQRJZLz; the total dissolved mass of dissolved gas is obtained; The density and the volume of the gas before mixing the standard mixed gas are obtained, and the density and the volume of the gas after mixing the standard mixed gas are obtained; The method for obtaining gas density and gas volume by the online monitoring device is as follows: hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene are introduced into transformer oil one by one, so that the volumes of the introduced hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene are the same; the online monitoring device includes a closed collector with the same volume as the introduced gas, an instrument for density detection of the standard mixed gas is arranged inside the collector, the mixed gas is collected at the transformer outlet, and the obtained density information is transmitted to the data calculation module; When the data analysis module analyzes the change information, it is specifically as follows: The online monitoring device is tested by comparing the changes in gas velocity and temperature of different standard mixed gases during mixing with the values ​​detected by the online monitoring device; The server controls the online monitoring device to obtain the temperature information during the operation of the transformer, and obtains the maximum temperature changes during the dissolution of hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene gases, which are WDBHZ1, WDBHZ2, WDBHZ3, WDBHZ4, WDBHZ5, WDBHZ6 and WDBHZ7 respectively; obtains the maximum dissolution rate of each gas during dissolution, and obtains the gas dissolution rate change information, which are set as QTRJBHz1, QTRJBHz2, QTRJBHz3, QTRJBHz4, QTRJBHz5, QTRJBHz6 and QTRJBHz7 respectively; transmits the analyzed gas information and change information to the data calculation module, and obtains the detection reference value of the monitoring device through data calculation; The change information is the change information of the internal temperature and velocity of the dissolved gas in the transformer oil; The data calculation module obtains the remaining hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene in the transformer oil, and sets the volume of the collected gas to be: SJQTTJz; the remaining hydrogen density is: SYQIMDz; the remaining carbon monoxide density is: SYYAHTMDz; the remaining carbon dioxide density is: SYEYHTMDz; the remaining methane density is: SYJWMDz; the remaining ethylene density is: SYYXMDz; the remaining ethane density is: SYJWMDz; the remaining acetylene density is: SYYQMDz; Obtain the remaining gas mass reference value of the remaining standard mixed gas, and set the remaining gas mass reference value to: SYQTZLCKz; The specific calculation is carried out according to the following formula: SYQTZLCKz=SJQTTJz×SYQIMDz+SJQTTJz×SYYAHTMDz+SJQTTJz× SYEYHTMDz+SJQTTJz×SYJWMDz+SJQTTJz×SYYXMDz+SJQTTJz× SYJWMDz+SJQTTJz×SYYQMDz; The integrated information acquisition module obtains the gas volume before mixing with a closed collector with the same volume as the introduced gas, and obtains the gas volume before mixing as: SJQTTJz; sets the hydrogen density before mixing as: QIMDz; the carbon monoxide density as: YAHTMDz; the carbon dioxide density as: EYHTMDz; the methane density as: JWMDz; the ethylene density as: YXMDz; the ethane density as: JWMDz; the acetylene density as: YQMDz; obtains the standard mixed gas mass reference value, and sets the standard mixed gas mass reference value as: HHQTCKz; the specific calculation is performed according to the following formula: HHQTCKz=SJQTTJz×QIMDz+SJQTTJz×YAHTMDz+SJQTTJz× EYHTMDz+SJQTTJz×JWMDz+SJQTTJz×YXMDz+SJQTTJz× JWMDz+SJQTTJz×YQMDz; The difference between the standard mixed gas mass and the residual gas mass reference value is calculated to obtain the dissolved gas mass reference value, and the dissolved gas mass reference value is set to: RJQTZLCKz; the specific calculation is performed according to the following formula: RJQTZLCKz=HHQTCKz-SYQTZLCKz; The total dissolved mass of dissolved gas is obtained; the total dissolved gas mass is set to: RJQTZLZSz; the specific calculation is performed according to the following formula: RJQTZLZSz=YYHTRJZLz+EYHTRJZLz+JWRJZLz+YXRJZLz+YWRJZLz+YQRJZ Lz; The data calculation module receives the change information of the detection module, and sets the maximum temperature value of hydrogen in the T time period to be: QQWDZmax; the maximum temperature value of carbon monoxide to be: YYHTWDZmax; the maximum temperature value of carbon dioxide to be: EYHTWDZmax; the maximum temperature value of methane to be: JWWDZmax; the maximum temperature value of ethylene to be: YXWDZmax; the maximum temperature value of ethane to be: YWWDZmax; the maximum temperature value of acetylene to be: YQWDZmax; The maximum gas dissolution rate change value of hydrogen in the T time period is: QQRJDZmax; the maximum gas dissolution rate change value of carbon monoxide is: YYHTRJDZmax; the maximum gas dissolution rate change value of carbon dioxide is: EYHTRJDZmax; the maximum gas dissolution rate change value of methane is: JWRJDZmax; the maximum gas dissolution rate change value of ethylene is: YXRJDZmax; the maximum gas dissolution rate change value of ethane is: YWRJDZmax; the maximum gas dissolution rate change value of acetylene is: YQRJDZmax; The data calculation module obtains the temperature change reference value and the gas dissolution rate change reference value based on the change information obtained by the online monitoring device and the change information obtained by the detection module; The reference value of the set temperature change is: WDBHCKz; the calculation formula is: WDBHCKz=|WDBHZ1-QQWDZmax|×|WDBHZ2-YYHTWDZmax|× |WDBHZ3-EYHTWDZmax|×|WDBHZ4-JWWDZmax|×|WDBHZ5-YXWDZmax|×|WDBHZ6-YWWDZmax|×|WDBHZ7-YQWDZmax|; The reference value of the gas dissolution rate change is: RJDBHCKz; its calculation formula is: RJDBHCKz=|QTRJBHz1-QQRJDZmax|×|QTRJBHz2-YYHTRJDZmax|× |QTRJBHz3-EYHTRJDZmax|×|QTRJBHz4-JWRJDZmax|× |QTRJBHz5-YXRJDZmax|×|QTRJBHz6-YWRJDZmax|× |QTRJBHz7-YQRJDZmax|; The data calculation module obtains the detection change value based on the temperature change reference value and the gas dissolution rate change reference value; the detection change value is set to: JCBHz; the following formula is used to obtain the detection change value: Where K is the balance coefficient, 1>K>0, and the obtained value is transmitted to the server; The calculated detection reference value of the monitoring device is transmitted to the server, and the server analyzes the acquired detection reference value of the monitoring device to determine the monitoring accuracy of the gas online monitoring device; If 0>JCZZJCCKz<2 / K, it is determined that the gas online monitoring device is accurate in detecting the gas solubility of the transformer; if JCZZJCCKz>2 / K, it is determined that the gas online monitoring device is inaccurate in detecting the gas solubility of the transformer; The detection reference value of the monitoring device is obtained by analysis based on the dissolved gas mass reference value, the detection change value and the total dissolved gas mass; the online monitoring device is scored based on the monitoring reference value of the monitoring device, and the obtained value is transmitted to the server.

2. The system platform of the online monitoring device for detecting dissolved gas in transformer oil according to claim 1, characterized in that: When detecting the change information in step S1, the specific steps are as follows: Step S11: Obtaining temperature information and gas dissolution rate change information in the change information, specifically: obtaining temperature information during hydrogen dissolution in a time period T, obtaining multiple temperature values, and obtaining the maximum temperature value of hydrogen during the dissolution process. Obtain the temperature information of carbon monoxide during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of carbon monoxide dissolution. Obtain the temperature information of carbon dioxide during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of carbon dioxide dissolution. Obtain the temperature information of methane during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of methane dissolution; Step S12: Obtain the temperature information of ethylene during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of ethylene dissolution. Obtain the temperature information of ethane during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of ethane dissolution. Acquire the temperature information of acetylene during the dissolution process, obtain multiple temperature values, and obtain the maximum temperature value of acetylene dissolution; transmit the acquired temperature information to the data calculation module; Step S13: obtaining information on the change in gas dissolution rate during the hydrogen dissolution process, obtaining multiple gas dissolution rate change values, obtaining the maximum gas dissolution rate change value of hydrogen during the dissolution process, obtaining information on the change in gas dissolution rate during the carbon monoxide dissolution process, obtaining multiple gas dissolution rate change values, obtaining the maximum gas dissolution rate change value of carbon monoxide dissolution, Obtain the gas dissolution rate change information of carbon dioxide during the dissolution process, obtain multiple gas dissolution rate change values, and obtain the maximum gas dissolution rate change of carbon dioxide dissolution. Obtaining information on the change in gas dissolution rate of methane during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of methane dissolution; Step S14: Obtaining information on the change in gas dissolution rate of ethylene during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of ethylene dissolution. Obtain the gas dissolution rate change information of ethane during the dissolution process, obtain multiple gas dissolution rate change values, and obtain the maximum gas dissolution rate change value of ethane dissolution. Obtaining information on the change in gas dissolution rate of acetylene during the dissolution process, obtaining multiple gas dissolution rate change values, and obtaining the maximum gas dissolution rate change value of acetylene dissolution; The acquired gas dissolution rate change information is transmitted to the data calculation module.

Images