Vehicle-mounted transformer substation data analysis device and method

Abstract

The invention discloses a mobile transformer substation data analysis device which is characterized in that when the total concentration of CH4, C2H6, C2H4 and C2H2 in transformer oil exceeds a total hydrocarbon content preset value, or the concentration of C2H2 in the transformer oil exceeds an acetylene content preset value, or the concentration of H2 in the transformer oil exceeds a hydrogen content preset value, early warning information is sent out; obtaining a mutual ratio of the concentration data of the characteristic gas in the transformer oil by utilizing a characteristic gas analysis method, and inquiring a preset characteristic gas coding table according to the mutual ratio of the concentration data of the characteristic gas in the transformer oil to obtain a mutual ratio code of the concentration data of the characteristic gas in the transformer oil; and querying a preset characteristic gas fault type query table according to the mutual ratio code of the concentration data of the characteristic gas in the transformer oil, and determining the type of the early warning information. The problem that the data information of the vehicle-mounted mobile station cannot be evaluated in real time can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of substation detection, and in particular to a vehicle-mounted substation data analysis device and method. Background Art

[0002] With the rapid economic growth, various large-load users are increasing day by day, and the load density is growing, which puts forward higher requirements for power supply continuity and reliability. Vehicle-mounted substations are compact, flexible and quickly put into operation. They are increasingly used in substation maintenance, load transfer, peak summer (winter), natural disasters, large-scale events and other emergency power supply. However, they have the characteristics of frequent long-distance transportation, long-term shutdown storage, and complex on-site operating environment, which have a certain impact on reliability. However, the staff cannot timely grasp the operating status of the vehicle-mounted substations because they conduct real-time status evaluation of the data information of the vehicle-mounted mobile station. Summary of the invention

[0003] The purpose of the present invention is to provide a vehicle-mounted substation data analysis device and method to solve the problem that the staff cannot evaluate the vehicle-mounted mobile station data information in real time. The staff can take targeted test and maintenance measures based on the obtained data analysis results, reduce the workload of on-site installation and debugging, and improve the commissioning efficiency of the mobile substation.

[0004] To achieve this purpose, the invention is designed to include a data acquisition module and a data analysis module;

[0005] The data acquisition module is used to collect the total concentration of CH4, C2H6, C2H4, and C2H2 in the transformer oil of the mobile substation, the concentration data of C2H2 in the transformer oil, and the concentration data of H2 in the transformer oil;

[0006] The data analysis module is used to issue a warning message when the sum of the concentrations of CH4, C2H6, C2H4, and C2H2 in the transformer oil exceeds a preset value of the total hydrocarbon content, or the concentration of C2H2 in the transformer oil exceeds a preset value of the acetylene content, or the concentration of H2 in the transformer oil exceeds a preset value of the hydrogen content, and uses a characteristic gas analysis method to obtain the mutual ratio of the concentration data of the characteristic gas in the transformer oil, query a preset characteristic gas coding table based on the mutual ratio of the concentration data of the characteristic gas in the transformer oil to obtain the mutual ratio code of the concentration data of the characteristic gas in the transformer oil, query a preset characteristic gas fault type query table based on the mutual ratio code of the concentration data of the characteristic gas in the transformer oil, and determine the type of warning information.

[0007] The data acquisition module is also used to collect SF6 sulfur hexafluoride gas pressure data in the gas-insulated metal composite switchgear HGIS (hybrid gas-insulated switchgear) of the mobile substation;

[0008] The data analysis module evaluates the SF6 gas pressure state in the HGIS based on the collected SF6 gas pressure data in the HGIS;

[0009] The data acquisition module is also used to collect the busbar temperature data of the switch cabinet of the mobile substation;

[0010] The data analysis module is also used to evaluate the temperature state of the switch cabinet busbar according to the collected switch cabinet busbar temperature data;

[0011] Beneficial effects of the present invention:

[0012] The present invention can collect the content of various gases in transformer oil, make corresponding early warning information judgments, and then determine the type of early warning information by querying the preset characteristic gas coding table and the preset characteristic gas fault type query table, so as to evaluate the data information of the vehicle-mounted mobile station in real time. The staff can take targeted test and maintenance measures according to the obtained data analysis results, reduce the workload of on-site installation and debugging, and improve the commissioning efficiency of the mobile substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 System diagram of the device of the present invention;

[0014] Figure 2 Data acquisition module system diagram;

[0015] Figure 3 Characteristic gas coding table diagram;

[0016] Figure 4 Characteristic gas fault type query table. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] like Figure 1 A mobile substation data analysis device is shown, which includes a data acquisition module and a data analysis module;

[0019] The data acquisition module is as follows Figure 2 The data shown is used to collect the total concentration of CH4, C2H6, C2H4, C2H2 in the transformer oil of the mobile substation, the concentration data of acetylene C2H2 in the transformer oil, and the concentration data of hydrogen H2 in the transformer oil;

[0020] The data analysis module is used to issue a warning message when the sum of the concentrations of CH4, C2H6, C2H4, and C2H2 in the transformer oil exceeds the preset value of the total hydrocarbon content, or the concentration of C2H2 in the transformer oil exceeds the preset value of the acetylene content, or the concentration of H2 in the transformer oil exceeds the preset value of the hydrogen content, and obtain the mutual ratio of the concentration data of the characteristic gas in the transformer oil by using the characteristic gas analysis method, and query the preset characteristic gas coding table according to the mutual ratio of the concentration data of the characteristic gas in the transformer oil, such as Figure 3 As shown in FIG. 1 , the mutual ratio code of the concentration data of the characteristic gas in the transformer oil is obtained, and the preset characteristic gas fault type query table is queried according to the mutual ratio code of the concentration data of the characteristic gas in the transformer oil. Figure 4 As shown, determine the type of warning information.

[0021] When a transformer fails, the temperature of the transformer oil rises, and hydrocarbon gas is decomposed. According to the energy between molecular bonds, it is generated in the manner of CH4→C2H6→C2H4→C2H2. At the same time, H2 is also generated with partial discharge. Using the three ratios (C2H2 / C2H4, CH4 / H2, C2H4 / C2H6) composed of the above five characteristic gas concentrations, these ratios are converted into corresponding coding groups under the same circumstances, and then the corresponding fault category is obtained by looking up the table, eliminating the influence of the volume effect of the transformer oil and eliminating the interference of different degassing rates on the analysis results.

[0022] A specific method for a mobile substation data analysis device to obtain the mutual ratio of concentration data of characteristic gases in transformer oil by using a characteristic gas analysis method is as follows:

[0023] C2H2, C2H4, CH4, H2, and C2H6 are selected as characteristic gases, and the ratios of the concentration data of C2H2 / C2H4, CH4 / H2, and C2H4 / C2H6 in transformer oil are calculated.

[0024] A mobile substation data analysis device, a method for querying a characteristic gas coding table according to the mutual ratio of the concentration data of characteristic gases in transformer oil to obtain the mutual ratio coding of the concentration data of characteristic gases in transformer oil is as follows:

[0025] When the ratio of the concentration data of C2H2 / C2H4 gas in transformer oil is less than 0.1, it is coded as O; when 0.1≤the ratio of the concentration data of C2H2 / C2H4 gas in transformer oil is less than 1, it is coded as 1; when 1≤the ratio range of the concentration data of C2H2 / C2H4 gas in transformer oil is less than 3, it is coded as 1; when the ratio range of the concentration data of C2H2 / C2H4 gas in transformer oil is ≥3, it is coded as 2;

[0026] When the mutual ratio range of CH4 / H2 gas concentration data in transformer oil is <0.1, the code is 1; when 0.1≤CH4 / H2 gas concentration data in transformer oil is <1, the code is 0; when 1≤CH4 / H2 gas concentration data in transformer oil is <3, the code is 2; when the mutual ratio range of CH4 / H2 gas concentration data in transformer oil is ≥3, the code is 2;

[0027] When the mutual ratio of the concentration data of C2H4 / C2H6 gas in transformer oil is <0.1, it is coded as 0; when 0.1≤the mutual ratio of the concentration data of C2H4 / C2H6 gas in transformer oil is <1, it is coded as 0; when 1≤the mutual ratio of the concentration data of C2H4 / C2H6 gas in transformer oil is <3, it is coded as 1; when the mutual ratio of the concentration data of C2H4 / C2H6 gas in transformer oil is ≥3, it is coded as 2.

[0028] A mobile substation data analysis device, according to the mutual ratio code of the concentration data of characteristic gas in transformer oil, queries a preset characteristic gas fault type query table, and the specific method of determining the type of early warning information is as follows;

[0029] When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 0, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 0, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 1, the first low temperature overheat (<150°C) alarm of the corresponding transformer oil is given;

[0030] When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 0, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 2, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 0, the corresponding transformer oil second low temperature overheat (150-300°C) alarm is given;

[0031] When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 0, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 2, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 1, the corresponding transformer oil medium temperature overheat (300-700°C) alarm is given;

[0032] When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 0, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 0, 1 or 2, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 2, the corresponding transformer oil high temperature overheating (>700℃) alarm is given;

[0033] When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 0, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 1, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 0, a partial discharge alarm of the transformer oil is corresponding;

[0034] When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 1, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 0 or 1, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 0 or 1 or 2, the corresponding transformer oil low energy discharge alarm is given;

[0035] When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 1, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 2, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 0, 1 or 2, the corresponding transformer oil low energy discharge and overheating alarm;

[0036] When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 2, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 0 or 1, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 0 or 1 or 2, the corresponding transformer oil arc discharge alarm is given;

[0037] When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 2, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 2, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 0, 1 or 2, the corresponding transformer oil arc discharge and overheat alarm;

[0038] The above technical scheme comprehensively considers the influence of C2H2 / C2H4, CH4 / H2 and C2H4 / C2H6, and subdivides 9 alarm types, including transformer oil first low temperature overheat (<150℃) alarm, transformer oil second low temperature overheat (150-300℃) alarm, transformer oil medium temperature overheat (300-700℃) alarm, transformer oil high temperature overheat (>700℃) alarm, transformer oil partial discharge alarm, transformer oil low energy discharge alarm, transformer oil low energy discharge and overheat alarm, transformer oil arc discharge alarm and transformer oil arc discharge and overheat alarm. The coding combination judgment method of C2H2 / C2H4, CH4 / H2 and C2H4 / C2H6 ensures the objectivity, comprehensiveness and accuracy of the alarm factors, and ensures that the operating status of the transformer can be presented more accurately.

[0039] The data acquisition module is also used to collect SF6 gas pressure data in the HGIS of the mobile substation;

[0040] The data analysis module evaluates the SF6 gas pressure state in the HGIS based on the collected SF6 gas pressure data in the HGIS;

[0041] The specific method for the data analysis module to evaluate the SF6 gas pressure state in the HGIS based on the collected SF6 gas pressure data in the HGIS is:

[0042] Air pressure sensor reading series P (0) for:

[0043] P (0) =[p (0) (1),p (0) (2)…p (0) (n)]

[0044] Where: p (0) (1),p (0) (2)…p (0) (n) is the accumulated data series of the 1st, 2nd…nth readings of the air pressure sensor:

[0045] P (1) =[p (1) (1),p (1) (2)…p (1) (n)]

[0046] in i belongs to 1~n;

[0047] Next to the mean X (1) =[x (1) (1),x (1) (2)…x (1) (n)]

[0048] in

[0049] Constructing the Matrix

[0050] Least squares matrix parameters

[0051] Where: a, b are the intermediate results of calculation, T is the matrix transposition symbol;

[0052] Pressure expansion fitting value

[0053] The monitored pressure value of SF6 gas after treatment is:

[0054]

[0055] Set the low warning value of SF6 gas pressure in HGIS and the low adjustment value of SF6 gas pressure in HGIS, the high warning value of SF6 gas pressure in HGIS and the high adjustment value of SF6 gas pressure in HGIS respectively;

[0056] When P≤the low SF6 gas pressure adjustment value in HGIS, a low SF6 gas pressure alarm signal in HGIS is issued; when the low SF6 gas pressure adjustment value in HGIS is<P≤the low SF6 gas pressure warning value in HGIS, a low SF6 gas pressure warning signal in HGIS is issued; when P≥the high SF6 gas pressure adjustment value in HGIS, the device issues a high SF6 gas pressure alarm signal in HGIS; when the high SF6 gas pressure adjustment value in HGIS is>P≥the high SF6 gas pressure warning value in HGIS, a high SF6 gas pressure warning signal in HGIS is issued.

[0057] The data acquisition module is also used to collect the busbar temperature data of the switch cabinet of the mobile substation;

[0058] The data analysis module is also used to evaluate the temperature state of the switch cabinet busbar according to the collected switch cabinet busbar temperature data;

[0059] The specific method for the data analysis module to evaluate the temperature state of the switch cabinet busbar according to the collected switch cabinet busbar temperature data is:

[0060] Average the measured temperatures;

[0061]

[0062] Where t is a time series, T(t) is the measured value of the busbar temperature of the switch cabinet at time t, and t0 is the time 15s before t;

[0063] Set the high temperature warning value and high temperature adjustment value of the switch cabinet busbar temperature;

[0064] when The device sends out a high temperature alarm signal for the switch cabinet busbar. Issue a high warning signal for the switch cabinet busbar temperature.

[0065] The data acquisition module is also used to collect humidity data in the cabin of the mobile substation;

[0066] The data analysis module is also used to report an alarm based on the collected cabin humidity data;

[0067] The specific method for the data analysis module to report an alarm based on the collected cabin humidity data is:

[0068] Set a humidity alarm value (95% in the present invention) and a humidity reminder value (90% in the present invention), the alarm value being greater than the reminder value;

[0069] When the humidity alarm value is ≤ the humidity in the cabin, the data analysis module will issue an alarm to lower the humidity in the cabin; when the humidity reminder value is ≤ the humidity in the cabin < the humidity alarm value, the data analysis module will issue an early warning to remind the operation and maintenance personnel to pay attention to changes in the humidity in the cabin.

[0070] The data acquisition module is also used to collect the temperature data in the cabin of the mobile substation;

[0071] The data analysis module is also used to report an alarm based on the collected cabin temperature data;

[0072] The specific method for the data analysis module to report an alarm based on the collected cabin temperature data is:

[0073] Set a high temperature alarm value for the cabin temperature (40°C in the present invention), a high temperature reminder value for the cabin temperature (35°C in the present invention), a low temperature alarm value for the cabin temperature (0°C in the present invention), and a low temperature reminder value for the cabin temperature (5°C in the present invention); the high temperature alarm value for the cabin temperature is greater than the high temperature reminder value for the cabin temperature, and the low temperature alarm value for the cabin temperature is less than the low temperature reminder value for the cabin temperature;

[0074] When the high temperature alarm value of the cabin temperature is ≤ the cabin temperature, the data analysis module gives an alarm to lower the cabin temperature; when the high temperature reminder value of the cabin temperature is ≤ the cabin temperature < the high temperature alarm value of the cabin temperature, the data analysis module gives an early warning to remind the operation and maintenance personnel to pay attention to the high temperature in the cabin; when the cabin temperature is ≤ the low temperature alarm value of the cabin temperature, the data analysis module gives an alarm to increase the cabin temperature; when the low temperature alarm value of the cabin temperature is < the cabin temperature ≤ the low temperature warning value of the cabin temperature, the analysis module gives an early warning to remind the operation and maintenance personnel to pay attention to the low temperature in the cabin.

[0075] The data acquisition module is also used to collect transformer oil temperature data of the mobile substation;

[0076] The data analysis module is also used to report an alarm based on the collected transformer oil temperature data;

[0077] The specific method for the data analysis module to report an alarm based on the collected transformer oil temperature data is:

[0078] Set the transformer oil temperature high temperature alarm value (95°C in the present invention), transformer oil temperature high temperature reminder value (default is ℃ in the present invention), transformer oil temperature low temperature alarm value (-5°C in the present invention), transformer oil temperature low temperature reminder value (0°C in the present invention); the transformer oil temperature high temperature alarm value is greater than the transformer oil temperature high temperature reminder value, and the transformer oil temperature low temperature alarm value is less than the transformer oil temperature low temperature reminder value;

[0079] When the high temperature alarm value of the transformer oil temperature is ≤ the transformer oil temperature, the analysis module gives an alarm to lower the transformer oil temperature; when the high temperature reminder value of the transformer oil temperature is ≤ the transformer oil temperature < the high temperature alarm value of the transformer oil temperature, the analysis module gives an early warning to remind the operation and maintenance personnel to pay attention to the high temperature of the transformer oil temperature; when the transformer oil temperature is ≤ the low temperature alarm value of the transformer oil temperature, the analysis module gives an alarm to increase the transformer oil temperature; when the low temperature alarm value of the transformer oil temperature is < the transformer oil temperature ≤ the low temperature warning value of the transformer oil temperature, the analysis module gives an early warning to remind the operation and maintenance personnel to pay attention to the low temperature of the transformer oil temperature.

[0080] The data acquisition module is also used to collect transformer oil pressure data of the mobile substation;

[0081] The data analysis module is also used to report an alarm based on the collected transformer oil pressure data;

[0082] The specific method for the data analysis module to report an alarm based on the collected transformer oil pressure data is:

[0083] Set a transformer oil pressure high pressure alarm value (0.5MPa in the present invention), a transformer oil pressure high pressure reminder value (0.45MPa in the present invention), a transformer oil pressure low pressure alarm value (0.2MPa in the present invention), and a transformer oil pressure low pressure reminder value (0.25MPa in the present invention); the transformer oil pressure high pressure alarm value is greater than the transformer oil pressure high pressure reminder value, and the transformer oil pressure low pressure alarm value is less than the transformer oil pressure low pressure reminder value;

[0084] When the transformer oil pressure high-pressure alarm value ≤ transformer oil pressure, the analysis module gives an alarm to lower the transformer oil pressure; when the transformer oil pressure high-pressure reminder value ≤ transformer oil pressure < transformer oil pressure high-pressure alarm value, the analysis module gives an early warning to remind the operation and maintenance personnel to pay attention to the transformer oil pressure high; when the transformer oil pressure ≤ transformer oil pressure low-pressure alarm value, the analysis module gives an alarm to increase the transformer oil pressure; when the transformer oil pressure low-pressure alarm value < transformer oil pressure ≤ transformer oil pressure low-pressure warning value, the analysis module gives an early warning to remind the operation and maintenance personnel to pay attention to the transformer oil pressure low.

[0085] The data acquisition module is also used to collect the transport distance, maximum acceleration, vibration and tire pressure data of the mobile substation;

[0086] The data analysis module is also used to report an alarm based on the collected transportation distance, maximum acceleration, vibration and tire pressure data of the mobile substation;

[0087] The specific method for the data analysis module to report an alarm based on the collected transportation distance, maximum acceleration, vibration and tire pressure data of the mobile substation is:

[0088] If the vehicle mileage exceeds the first pipeline reminder setting value (10,000 kilometers in the present invention), a reminder to check the pipeline is issued, which can be manually canceled. After cancellation, the mileage increases by the second pipeline reminder setting value (10,000 kilometers in the present invention). If the vehicle mileage increase exceeds the second pipeline reminder setting value, a reminder to check the pipeline is issued again; if the maximum acceleration exceeds the maximum acceleration setting value, the present invention is ±3g, the occurrence time and specific value are recorded, and an alarm message is issued; when the tire pressure of one or more tires is lower than the tire pressure setting value (2bar in the present invention), a low tire pressure alarm is issued; if the vehicle body is equipped with electric hydraulic outriggers, and the hydraulic oil level is lower than the hydraulic oil level setting value (20% in the present invention), an oil shortage alarm is issued, and when the vehicle body battery voltage is lower than the battery voltage setting value (11.8V in the present invention), a low battery alarm is issued. All of the above thresholds can be adjusted manually

[0089] Embodiment 2:

[0090] A mobile substation data analysis device comprises a power module, a data storage module and a display interaction module;

[0091] The power module supplies power to the entire device, and has a built-in charging module and a storage battery. When the mobile substation is operating normally, the power module supplies power to the device through the integrated power output and charges the storage battery; when it is out of operation, the storage battery supplies power to the device;

[0092] The data storage module is mainly responsible for storing data, including the original data of the data acquisition module and the data processed by the data analysis module; it has a USB expansion port, which can be connected to an external storage device for expansion;

[0093] The display interaction module is a touch screen, which realizes the human-computer interaction of the device. The staff can retrieve or input relevant data by operating the touch screen;

[0094] Embodiment 3: A method for analyzing data of a mobile substation based on the above device, characterized in that it comprises the following steps:

[0095] Collect the total concentration of CH4, C2H6, C2H4, C2H2 in the transformer oil of the mobile substation, the concentration data of C2H2 in the transformer oil, and the concentration data of H2 in the transformer oil;

[0096] When the sum of the concentrations of CH4, C2H6, C2H4, and C2H2 in the transformer oil exceeds the preset value of the total hydrocarbon content, or the concentration of C2H2 in the transformer oil exceeds the preset value of the acetylene content, or the concentration of H2 in the transformer oil exceeds the preset value of the hydrogen content, an early warning message is issued, and a characteristic gas analysis method is used to obtain the mutual ratio of the concentration data of the characteristic gases in the transformer oil. According to the mutual ratio of the concentration data of the characteristic gases in the transformer oil, a preset characteristic gas coding table is queried to obtain the mutual ratio code of the concentration data of the characteristic gases in the transformer oil. According to the mutual ratio code of the concentration data of the characteristic gases in the transformer oil, a preset characteristic gas fault type query table is queried to determine the type of early warning message.

[0097] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A mobile substation data analysis device, characterized in that: It includes data acquisition module and data analysis module; The data acquisition module is used to collect the total concentration of CH4, C2H6, C2H4, and C2H2 in the transformer oil of the mobile substation, the concentration data of C2H2 in the transformer oil, and the concentration data of H2 in the transformer oil; The data analysis module is used to issue a warning message when the sum of the concentrations of CH4, C2H6, C2H4, and C2H2 in the transformer oil exceeds a preset value of the total hydrocarbon content, or the concentration of C2H2 in the transformer oil exceeds a preset value of the acetylene content, or the concentration of H2 in the transformer oil exceeds a preset value of the hydrogen content, and uses a characteristic gas analysis method to obtain the mutual ratio of the concentration data of the characteristic gas in the transformer oil, query a preset characteristic gas coding table based on the mutual ratio of the concentration data of the characteristic gas in the transformer oil to obtain the mutual ratio code of the concentration data of the characteristic gas in the transformer oil, query a preset characteristic gas fault type query table based on the mutual ratio code of the concentration data of the characteristic gas in the transformer oil, and determine the type of warning information.

2. A mobile substation data analysis device according to claim 1, characterized in that: The specific method of obtaining the mutual ratio of the concentration data of characteristic gases in transformer oil by using the characteristic gas analysis method is: C2H2, C2H4, CH4, H2, and C2H6 are selected as characteristic gases, and the ratios of the concentration data of C2H2 / C2H4, CH4 / H2, and C2H4 / C2H6 in transformer oil are calculated.

3. A mobile substation data analysis device according to claim 2, characterized in that: The method of querying the characteristic gas coding table according to the mutual ratio of the concentration data of the characteristic gas in the transformer oil to obtain the mutual ratio coding of the concentration data of the characteristic gas in the transformer oil is: When the ratio of the concentration data of C2H2 / C2H4 gas in transformer oil is less than 0.1, it is coded as O; when 0.1≤the ratio of the concentration data of C2H2 / C2H4 gas in transformer oil is less than 1, it is coded as 1; when 1≤the ratio of the concentration data of C2H2 / C2H4 gas in transformer oil is less than 3, it is coded as 1; when the ratio of the concentration data of C2H2 / C2H4 gas in transformer oil is ≥3, it is coded as 2; When the mutual ratio range of CH4 / H2 gas concentration data in transformer oil is <0.1, it is coded as 1; when 0.1≤CH4 / H2 gas concentration data in transformer oil is <1, it is coded as 0; when 1≤CH4 / H2 gas concentration data in transformer oil is <3, it is coded as 2; when the mutual ratio of CH4 / H2 gas concentration data in transformer oil is ≥3, it is coded as 2; When the mutual ratio of the concentration data of C2H4 / C2H6 gas in transformer oil is <0.1, it is coded as 0; when 0.1≤the mutual ratio of the concentration data of C2H4 / C2H6 gas in transformer oil is <1, it is coded as 0; when 1≤the mutual ratio of the concentration data of C2H4 / C2H6 gas in transformer oil is <3, it is coded as 1; when the mutual ratio of the concentration data of C2H4 / C2H6 gas in transformer oil is ≥3, it is coded as 2.

4. A mobile substation data analysis device according to claim 3, characterized in that: The specific method of determining the type of early warning information is as follows: querying a preset characteristic gas fault type query table according to the mutual ratio code of the characteristic gas concentration data in the transformer oil; When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 0, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 0, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 1, the first low temperature overheat alarm of the transformer oil is corresponding; When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 0, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 2, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 0, the corresponding transformer oil second low temperature overheat alarm is given; When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 0, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 2, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 1, the corresponding transformer oil medium temperature overheat alarm is given; When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 0, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 0, 1 or 2, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 2, the corresponding transformer oil high temperature overheating alarm is given; When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 0, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 1, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 0, a partial discharge alarm of the transformer oil is corresponding; When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 1, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 0 or 1, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 0 or 1 or 2, the corresponding transformer oil low energy discharge alarm is given; When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 1, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 2, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 0, 1 or 2, the corresponding transformer oil low energy discharge and overheating alarm; When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 2, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 0 or 1, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 0 or 1 or 2, the corresponding transformer oil arc discharge alarm is given; When the mutual ratio of the concentration data of C2H2 / C2H4 in the transformer oil is coded as 2, and the mutual ratio of the concentration data of CH4 / H2 in the transformer oil is coded as 2, and the mutual ratio of the concentration data of C2H4 / C2H6 in the transformer oil is coded as 0 or 1 or 2, it corresponds to the transformer oil arc discharge and overheating alarm.

5. The mobile substation data analysis device according to claim 1, characterized in that: The data acquisition module is also used to collect SF6 gas pressure data in the HGIS of the mobile substation; The data analysis module is also used to evaluate the SF6 gas pressure state in the HGIS based on the collected SF6 gas pressure data in the HGIS.

6. A mobile substation data analysis device according to claim 5, characterized in that: The specific method for the data analysis module to evaluate the SF6 gas pressure state in the HGIS based on the collected SF6 gas pressure data in the HGIS is: Air pressure sensor reading series P (0) for: P (0) =[p (0) (1),p (0) (2)…p (0) (n)] Where: p (0) (1),p (0) (2)…p (0) (n) is the accumulated data series of the 1st, 2nd…nth readings of the air pressure sensor: P (1) =[p (1) (1),p (1) (2 ) …p (1) (n)] in Next to the mean X (1) =[x (1) (1),x (1) (2)…x (1) (n)] in Constructing the Matrix Least squares matrix parameters Where: a, b are the intermediate results of calculation, T is the matrix transposition symbol; Pressure expansion fitting value The monitored pressure value of SF6 gas after treatment is: Set the low warning value of SF6 gas pressure in HGIS and the low adjustment value of SF6 gas pressure in HGIS, the high warning value of SF6 gas pressure in HGIS and the high adjustment value of SF6 gas pressure in HGIS respectively; When P≤the low SF6 gas pressure adjustment value in HGIS, a low SF6 gas pressure alarm signal in HGIS is issued; when the low SF6 gas pressure adjustment value in HGIS is<P≤the low SF6 gas pressure warning value in HGIS, a low SF6 gas pressure warning signal in HGIS is issued; when P≥the high SF6 gas pressure adjustment value in HGIS, a high SF6 gas pressure alarm signal in HGIS is issued; when the high SF6 gas pressure adjustment value in HGIS is>P≥the high SF6 gas pressure warning value in HGIS, a high SF6 gas pressure warning signal in HGIS is issued.

7. A mobile substation data analysis device according to claim 1, characterized in that: The data acquisition module is also used to collect the busbar temperature data of the switch cabinet of the mobile substation; The data analysis module is also used to evaluate the temperature status of the switch cabinet busbar based on the collected switch cabinet busbar temperature data.

8. A mobile substation data analysis device according to claim 7, characterized in that: The specific method for the data analysis module to evaluate the temperature state of the switch cabinet busbar according to the collected switch cabinet busbar temperature data is: Average the measured temperatures; Where t is the time series, T(t) is the measured value of the busbar temperature of the switch cabinet at time t, and t0 is the time before t; Set the high temperature warning value and high temperature adjustment value of the switch cabinet busbar temperature; when Send out the switch cabinet busbar high temperature alarm signal.

9. The mobile substation data analysis device according to claim 1, characterized in that: The data acquisition module is also used to collect the temperature data in the cabin of the mobile substation; The data analysis module is also used to report an alarm based on the collected cabin temperature data; When the high temperature alarm value of the cabin temperature is ≤ the cabin temperature, the data analysis module gives an alarm to lower the cabin temperature; when the high temperature reminder value of the cabin temperature is ≤ the cabin temperature < the high temperature alarm value of the cabin temperature, the data analysis module gives an early warning to remind the operation and maintenance personnel to pay attention to the high temperature in the cabin; when the cabin temperature is ≤ the low temperature alarm value of the cabin temperature, the data analysis module gives an alarm to increase the cabin temperature; when the low temperature alarm value of the cabin temperature is < the cabin temperature ≤ the low temperature warning value of the cabin temperature, the analysis module gives an early warning to remind the operation and maintenance personnel to pay attention to the low temperature in the cabin.

10. A mobile substation data analysis method based on the device of claim 1, characterized in that: It includes the following steps: Collect the total concentration of CH4, C2H6, C2H4, C2H2 in the transformer oil of the mobile substation, the concentration data of C2H2 in the transformer oil, and the concentration data of H2 in the transformer oil; When the sum of the concentrations of CH4, C2H6, C2H4, and C2H2 in the transformer oil exceeds the preset value of the total hydrocarbon content, or the concentration of C2H2 in the transformer oil exceeds the preset value of the acetylene content, or the concentration of H2 in the transformer oil exceeds the preset value of the hydrogen content, an early warning message is issued, and a characteristic gas analysis method is used to obtain the mutual ratio of the concentration data of the characteristic gases in the transformer oil. According to the mutual ratio of the concentration data of the characteristic gases in the transformer oil, a preset characteristic gas coding table is queried to obtain the mutual ratio code of the concentration data of the characteristic gases in the transformer oil. According to the mutual ratio code of the concentration data of the characteristic gases in the transformer oil, a preset characteristic gas fault type query table is queried to determine the type of early warning message.

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