Transformer monitoring device and transformer cabinet
By combining temperature, gas, and partial discharge monitors, the transformer performance is comprehensively tested, solving the problem of incomplete transformer monitoring in existing technologies and ensuring the stable operation of the power system.
Patent Information
- Application Number
- CN202422013764.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-08-19
AI Technical Summary
Existing transformer monitoring equipment only acquires data from a single perspective, which cannot comprehensively detect transformer performance, resulting in insufficient stability of the power system.
Temperature monitors, gas monitors, and partial discharge monitors are used to collect data on transformer temperature, oil gas, and partial discharge, respectively. The data is then comprehensively analyzed by a data processor to fully test the transformer performance.
It enables comprehensive testing of transformer performance, ensuring the stable operation of the power system.
Smart Images
Figure CN223180320U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of transformers, and particularly relates to a monitoring device for a transformer and a transformer cabinet. Background Art
[0002] In power systems such as photovoltaic systems and energy storage systems, a transformer can transform the voltage on the photovoltaic side or the energy storage side so that the output transformed voltage adapts to the grid side. The performance of the transformer can affect the stability and operating efficiency of the entire system. Currently, the monitoring equipment for transformers only obtains data of the transformer from a single perspective. For example, only temperature data is obtained, and the obtained monitoring data is single, which cannot comprehensively detect the performance of the transformer and cannot ensure the stable operation of the power system. Summary of the Utility Model
[0003] This application aims to solve at least one of the technical problems existing in the prior art. For this reason, this application provides a monitoring device for a transformer and a transformer cabinet, which can comprehensively detect the performance of the transformer, thereby ensuring the stable operation of the power system.
[0004] In a first aspect, this application provides a monitoring device for a transformer, including:
[0005] A temperature monitor, the temperature monitor includes a temperature collector and a first data processor. The temperature collector is arranged at the position to be collected of the transformer. The temperature collector is electrically connected to the first data processor. The temperature collector is used to collect the temperature data of the position to be collected and transmit it to the first data processor;
[0006] A gas monitor, the gas monitor includes a gas collector and a second data processor. The gas collector is arranged at the flange opening at the bottom of the oil tank of the transformer. The gas collector is electrically connected to the second data processor. The gas collector is used to collect the gas data in the oil of the oil tank of the transformer and transmit it to the second data processor;
[0007] A partial discharge monitor, the partial discharge monitor includes an electromagnetic wave collector and a third data processor. The electromagnetic wave collector is arranged outside the oil tank of the transformer. The electromagnetic wave collector is electrically connected to the third data processor. The electromagnetic wave collector is used to collect the partial discharge data of the transformer and transmit it to the third data processor.
[0008] The monitoring device of the transformer according to the present application, by setting a temperature monitor, a gas monitor and a partial discharge monitor, the temperature monitor can collect the temperature data of the position to be collected, and determine the faults generated by the transformer according to the temperature data. The gas monitor can collect the gas data in the oil, and determine the faults generated by the transformer according to the gas data in the oil. The partial discharge monitor can collect the partial discharge data of the transformer and determine whether there is a partial discharge fault in the transformer. The data collected by the monitoring device is comprehensive, and the performance of the transformer can be detected in all directions, thereby ensuring the stable operation of the power system.
[0009] According to an embodiment of the present application, the temperature collector includes an optical fiber and an insulating probe disposed at one end of the optical fiber. The other end of the optical fiber is electrically connected to the first data processor, and the insulating probe is fixed at the position to be collected.
[0010] According to an embodiment of the present application, the position to be collected where the insulating probe is disposed includes at least one of the coil position of the transformer, the iron core position of the transformer, and the tank position of the transformer.
[0011] According to an embodiment of the present application, the insulating probe is disposed inside the coil of the transformer, outside the coil of the transformer, at the bottom layer of the tank of the transformer, and at the oil level line of the transformer.
[0012] According to an embodiment of the present application, the temperature monitor further includes a timer. The temperature collector is electrically connected to the timer. The temperature collector is used to transmit the temperature data to the timer. The timer is used to time the duration when the temperature data is greater than the temperature data threshold to obtain duration data. The timer is electrically connected to the third data processor, and the timer is used to transmit the duration data to the third data processor.
[0013] According to an embodiment of the present application, the gas collector includes a transformer oil extractor and an oil-gas separator. The input end of the transformer oil extractor is connected to the flange port at the bottom of the tank of the transformer. The output end of the transformer oil extractor is connected to the input end of the oil-gas separator. The output end of the oil-gas separator is electrically connected to the second data processor.
[0014] According to an embodiment of the present application, the second data processor includes a gas concentration analyzer, a gas component analyzer, and a fault analyzer. The input ends of the gas concentration analyzer and the gas component analyzer are respectively electrically connected to the output end of the oil-gas separator. The output ends of the gas concentration analyzer and the gas component analyzer are respectively electrically connected to the input end of the fault analyzer. The gas concentration analyzer is configured to collect the gas concentration data of the output gas of the oil-gas separator and transmit it to the fault analyzer. The gas component analyzer is configured to collect the gas component data of the output gas of the oil-gas separator and transmit it to the fault analyzer.
[0015] According to an embodiment of the present application, the monitoring device of the transformer is communicatively connected to the client of the monitoring device of the transformer through a communication port. The monitoring device of the transformer is configured to transmit the first monitoring data output by the temperature monitor, the second monitoring data output by the gas monitor, and the third monitoring data output by the partial discharge monitor to the client.
[0016] According to an embodiment of the present application, the electromagnetic wave collector is configured to collect electrical signals greater than 30 megahertz.
[0017] In a second aspect, the present application provides a transformer cabinet, which is characterized by including:
[0018] A transformer;
[0019] The monitoring device of the transformer as described in the first aspect above, and the monitoring device is electrically connected to the transformer.
[0020] According to the transformer cabinet of the present application, by providing a temperature monitor, a gas monitor, and a partial discharge monitor, the temperature monitor can collect the temperature data of the position to be collected and determine the faults generated by the transformer according to the temperature data. The gas monitor can collect the gas data in the oil and determine the faults generated by the transformer according to the gas data in the oil. The partial discharge monitor can collect the partial discharge data of the transformer and determine whether there is a partial discharge fault in the transformer. The data collected by the monitoring device is comprehensive, and the performance of the transformer can be detected in all directions, thereby ensuring the stable operation of the power system.
[0021] According to an embodiment of the present application, the transformer cabinet further includes:
[0022] An instrument box chamber, which is arranged on the outer surface of the oil tank of the transformer. The first data processor, the second data processor, the third data processor, and the electromagnetic wave collector are arranged in the instrument box chamber.
[0023] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Brief Description of the Drawings
[0024] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0025] Figure 1 is one of the schematic structural diagrams of the transformer provided by the embodiment of the present application;
[0026] Figure 2 is Figure 1 the schematic diagram of the A-A cross-section in;
[0027] Figure 3 is Figure 1 the schematic diagram of the B-B cross-section in;
[0028] Figure 4 is another schematic structural diagram of the transformer provided by the embodiment of the present application;
[0029] Figure 5 is the third schematic structural diagram of the transformer provided by the embodiment of the present application;
[0030] Figure 6 is the fourth schematic structural diagram of the transformer provided by the embodiment of the present application;
[0031] Figure 7 is Figure 6 the partial enlarged view at C in;
[0032] Figure 8 is the fifth schematic structural diagram of the transformer provided by the embodiment of the present application;
[0033] Figure 9 is Figure 8 the partial enlarged view at D in;
[0034] Figure 10 is the schematic diagram of the connection between the monitoring device and the client of the transformer provided by the embodiment of the present application.
[0035] Reference Signs:
[0036] Instrument box chamber 110, switch box chamber 120, temperature monitor 111, partial discharge monitor 112,
[0037] Gas monitor 113, oil tank 130, iron core 131, coil 132, oil level line 133, flange port 134. Detailed Description of the Embodiments
[0038] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as limiting the present application.
[0039] Reference will be made below Figures 1 - 10 to the monitoring device and transformer cabinet of the transformer according to the embodiments of the present application.
[0040] It should be noted that the transformer in the embodiments of the present application can be applied to power generation systems such as photovoltaic systems and energy storage systems.
[0041] As Figure 3 shown, the transformer in the embodiments of the present application includes an oil tank 130, in which a coil 132 and an iron core 131 are arranged. Transformer oil is stored in the oil tank 130, and the coil 132 and the iron core 131 are immersed in the transformer oil.
[0042] The monitoring device of the transformer according to the embodiments of the present application is used to monitor the working state, faults generated, etc. of the transformer.
[0043] As Figure 2 shown, the monitoring device of the transformer according to the embodiments of the present application includes a temperature monitor 111, a gas monitor 113, and a partial discharge monitor 112.
[0044] Among them, the temperature monitor 111 includes a temperature collector and a first data processor. The temperature collector is arranged at the position to be collected of the transformer, and the temperature collector is electrically connected to the first data processor. The temperature collector is used to collect the temperature data of the position to be collected and transmit it to the first data processor.
[0045] The position to be collected is the position in the transformer where temperature collection is to be performed, and the temperature data is the temperature value obtained by collecting the temperature of the position to be collected.
[0046] The temperature monitor 111 is used to collect the temperature data of the position to be collected and process the temperature data to generate fault detection information of the transformer.
[0047] The temperature monitor 111 collects the temperature data of the position to be collected through the temperature collector. The temperature collector transmits the collected temperature data to the first data processor, and the first data processor processes the temperature data to determine whether a fault has occurred at the position to be collected of the transformer.
[0048] In actual execution, the first data processor can compare the temperature data with a set temperature threshold. When the temperature data exceeds the set temperature threshold, it is determined that a fault has occurred at the position to be collected corresponding to the temperature data, such as a short circuit fault in the coil 132 of the transformer.
[0049] In this embodiment, the temperature collector can be a thermistor temperature sensor, an infrared temperature sensor, an optical fiber temperature sensor, etc., and the first data processor can be a microprocessor, a digital signal processor, an embedded system, an artificial intelligence processor, etc.
[0050] In this embodiment, the gas monitor 113 includes a gas collector and a second data processor. The gas collector is disposed at the flange port 134 at the bottom of the oil tank 130 of the transformer. The gas collector is electrically connected to the second data processor, and the gas collector is used to collect the gas data in the transformer oil in the oil tank 130 of the transformer and transmit it to the second data processor.
[0051] Among them, the gas data in the oil can include the gases contained in the transformer oil and the concentration data corresponding to various gases, and can also include the components of the gases and the concentration data corresponding to each component.
[0052] Such as Figures 6 - 9 As shown, a flange port 134 is provided at the bottom of the oil tank 130 of the transformer. The gas collector can extract the transformer oil in the oil tank 130 through the flange port 134 at the bottom of the oil tank 130, and identify the gases in the transformer oil, so as to collect the gas data in the oil.
[0053] In this embodiment, the gas monitor 113 is used to collect the gas data in the oil and process the gas data in the oil to generate the fault detection information of the transformer.
[0054] The gas monitor 113 collects the gas data in the oil through the gas collector. The gas collector transmits the collected gas data in the oil to the second data processor, and the second data processor processes the gas data in the oil, so as to determine whether the transformer fails according to the gas data in the oil.
[0055] In actual execution, the second data processor can compare the concentrations of various gases in the gas data in the oil with the concentrations of various gases during the normal operation of the inverter. When it is determined that the concentration of a certain gas or certain gases is different from the concentration of the gas during the normal operation of the inverter, it is determined that the transformer fails.
[0056] For example, the second data processor can determine that the transformer fails when the content of methane in the transformer oil exceeds 100 μL / L.
[0057] In actual execution, the second data processor can also determine the fault type of the transformer according to the gas data in the oil by the ratio method.
[0058] That is, two gas components are selected, multiple gases are composed of the two gas components, and a mapping table is established. The mapping table characterizes the mapping relationship between the concentration ratio between the gases composed of the two gas components and the transformer fault type.
[0059] For example, the two gas components can be carbon (C) and hydrogen (H). C and H can form acetylene (C2H2), ethylene (C2H4), methane (CH4), hydrogen (H2), and ethane (C2H6). The mapping table can represent the mapping relationship between the ratio of the concentration of C2H2 to the concentration of C2H4, the ratio of the concentration of CH4 to the concentration of H2, and the ratio of the concentration of C2H4 to the concentration of C2H6 and the transformer fault type.
[0060] The second data processor can determine the concentration ratio between different gases composed of carbon and hydrogen based on the gas data in the oil, and determine the fault type of the transformer through the mapping table.
[0061] In this embodiment, the gas collector can be a gas sensor, etc., and the second data processor can be a microprocessor, a digital signal processor, an embedded system, an artificial intelligence processor, etc.
[0062] In this embodiment, the partial discharge monitor 112 includes an electromagnetic wave collector and a third data processor. The electromagnetic wave collector is arranged outside the oil tank 130 of the transformer. The electromagnetic wave collector is electrically connected to the third data processor. The electromagnetic wave collector is used to collect the partial discharge data of the transformer and transmit it to the third data processor.
[0063] The electromagnetic wave collector can be arranged on the outer surface of the oil tank 130 of the transformer. The electromagnetic wave collector collects the partial discharge data, and the partial discharge data is the electromagnetic wave data radiated by the discharge caused by the excessive electric field intensity in a local area of the transformer.
[0064] The partial discharge monitor 112 is used to collect the partial discharge data and process the partial discharge data to generate the fault detection information of the transformer.
[0065] The partial discharge monitor 112 collects the partial discharge data through the electromagnetic wave collector. The electromagnetic wave collector transmits the collected partial discharge data to the third data processor, and the third data processor processes the partial discharge data to determine whether there is a fault of excessive local electric field intensity in the transformer.
[0066] In actual execution, the third data processor can determine that there is a fault of excessive local electric field intensity in the transformer when receiving the partial discharge data. When the local electric field intensity is excessive, the insulating material of the transformer may be damaged.
[0067] In this embodiment, the third data processor may be a microprocessor, a digital signal processor, an embedded system, an artificial intelligence processor, etc.
[0068] According to the monitoring device for a transformer provided by an embodiment of the present application, by setting a temperature monitor 111, a gas monitor 113, and a partial discharge monitor 112, the temperature monitor 111 can collect temperature data of a position to be collected, and determine a fault generated by the transformer according to the temperature data. The gas monitor 113 can collect gas data in the oil, and determine a fault generated by the transformer according to the gas data in the oil. The partial discharge monitor 112 can collect partial discharge data of the transformer, and determine whether there is a partial discharge fault in the transformer. The data collected by the monitoring device is comprehensive, and can detect the performance of the transformer in all directions, so as to ensure the stable operation of the power system.
[0069] In some embodiments, the temperature collector includes an optical fiber and an insulating probe disposed at one end of the optical fiber. The other end of the optical fiber is electrically connected to the first data processor, and the insulating probe is fixed at the position to be collected.
[0070] The insulating probe is fixed at the position to be collected through a fixing device. The light intensity, phase, frequency, etc. of the light in the insulating probe will change according to the change of the temperature contacted by the insulating probe. The changed optical signal is transmitted to the first data processor through the optical fiber, and the first data processor converts the optical signal into a temperature signal through demodulation techniques such as spectral analysis.
[0071] It can be understood that the temperature collector may be an optical fiber temperature sensor. The optical fiber temperature sensor has high sensitivity, strong anti-interference ability and is suitable for long-distance temperature collection, and can start temperature collection within a short time after starting up.
[0072] In this embodiment, the insulating probe is used to contact the position to be collected. The insulating probe can not affect the overall insulation layout of the transformer, and the material of the insulating probe can be ceramic material, quartz glass, etc.
[0073] In some embodiments, the positions to be collected where the insulating probes are disposed include at least one of the coil position of the transformer, the iron core position of the transformer, and the position of the transformer oil tank 130 of the transformer.
[0074] Among them, the coil position is the position where the coil 132 of the transformer is located, the iron core position is the position where the iron core 131 of the transformer is located, and the position of the transformer oil tank 130 of the transformer is the position of the transformer oil in the oil tank 130.
[0075] In this embodiment, the insulating probe may be disposed in the oil duct of the coil 132 of the transformer, the insulating probe may be disposed on the surface of the iron core 131 of the transformer, and the insulating probe may be disposed on the inner side wall of the oil tank 130 and immersed in the transformer oil.
[0076] In this embodiment, as Figure 4 and Figure 5 shown, the insulating probes are arranged at multiple positions inside the fuel tank 130, and the collected temperature data is comprehensive. It can be used to detect high-temperature faults occurring in the transformer coil 132, iron core 131, etc. Moreover, the insulating probes are in contact with the coil 132, iron core 131, etc., and will not damage the insulation layout of the transformer.
[0077] Among them, serial number 1 is for testing the temperature of the inner coil 132 of a certain phase coil 132; serial number 2 is for testing the temperature of the outer coil 132 of the same phase coil 132; serial number 3 is for testing the temperature of the inner coil 132 of another phase coil 132; serial number 4 is for testing the temperature of the outer coil 132 of the coil 132 corresponding to serial number 3; serial numbers 5 and 6 are for testing the temperature of the iron core 131; serial number 7 is for testing the temperature of the bottom layer of the transformer oil; serial number 8 is for testing the temperature of the top layer of the transformer oil.
[0078] In some embodiments, the insulating probes are arranged inside the transformer coil 132, outside the transformer coil 132, at the bottom layer of the transformer fuel tank 130, and at the oil level line 133 of the transformer.
[0079] The temperature collector includes multiple insulating probes. The multiple insulating probes are respectively fixedly arranged inside the transformer coil 132 for collecting the temperature inside the coil 132, and fixedly arranged outside the transformer coil 132 for collecting the temperature outside the coil 132;
[0080] and are fixedly arranged at the bottom layer inside the transformer fuel tank 130 for collecting the temperature of the transformer oil at the bottom layer of the fuel tank 130, and fixedly arranged at the position of the top oil level line 133 on the inner side wall of the transformer fuel tank 130 for collecting the temperature of the top surface of the transformer oil in the fuel tank 130.
[0081] In some embodiments, the temperature monitor 111 further includes a timer. The temperature collector is electrically connected to the timer. The temperature collector is used to transmit temperature data to the timer. The timer is used to time the duration when the temperature data is greater than the temperature data threshold to obtain duration data. The timer is electrically connected to the third data processor, and the timer is used to transmit the duration data to the third data processor.
[0082] Among them, the temperature data threshold is a set value. When the temperature data is greater than the temperature data threshold, it indicates that the transformer may have an overheating fault. The duration data represents the duration when the temperature data is greater than the temperature data threshold.
[0083] In this embodiment, the temperature collector collects temperature data in real time and transmits the temperature data to the timer. When the temperature data is greater than the temperature data threshold, the timer starts timing. The timer transmits the duration data to the third data processor, and the temperature collector transmits the temperature data to the third data processor. The third data processor can determine the fault type of the position to be collected according to the temperature data and the corresponding duration data.
[0084] For example, when the position to be collected is coil 132, and after the temperature data is greater than the temperature data threshold, if the growth rate is large within a short duration, the third data processor can determine that there is an emergency overload in coil 132; when the temperature data is greater than the temperature data threshold and the change range of the temperature data is small within a long duration, the third data processor can determine that there is a peak load in coil 132.
[0085] In some embodiments, the gas collector includes a transformer oil extractor and an oil-gas separator. The input end of the transformer oil extractor is connected to the flange port 134 at the bottom of the oil tank 130 of the transformer, the output end of the transformer oil extractor is connected to the input end of the oil-gas separator, and the output end of the oil-gas separator is electrically connected to the second data processor.
[0086] Among them, the transformer oil extractor is used to extract the transformer oil in the oil tank 130, and the oil-gas separator is used to separate the gas in the transformer oil.
[0087] [[ID=—12]]In this embodiment, a drain valve can be set at the flange port 134 at the bottom of the oil tank 130. The flange port 134 can be connected to the transformer oil extractor through an oil inlet pipe. When the drain valve is opened, the transformer oil extractor extracts the transformer oil in the oil tank 130 through the flange port 134 at the bottom of the oil tank 130 and transports it to the oil-gas separator. The oil-gas separator separates the gas in the transformer oil and transports it to the second data processor.
[0088] In some embodiments, the second data processor includes a gas concentration analyzer, a gas component analyzer, and a fault analyzer. The input ends of the gas concentration analyzer and the gas component analyzer are respectively electrically connected to the output end of the oil-gas separator. The output ends of the gas concentration analyzer and the gas component analyzer are respectively electrically connected to the input end of the fault analyzer. The gas concentration analyzer is used to collect the gas concentration data of the output gas of the oil-gas separator and transmit it to the fault analyzer, and the gas component analyzer is used to collect the gas component data of the output gas of the oil-gas separator and transmit it to the fault analyzer.
[0089] Among them, the gas component analyzer is an instrument for detecting the types of gases or gas components included in a gas mixture, the gas concentration analyzer is an instrument for detecting the concentration of a certain gas or a certain gas component in a gas mixture, and the fault analyzer is an instrument for detecting the faults of a transformer based on gas concentration data and gas component data.
[0090] The gas component analyzer can be a gas chromatography instrument, the gas concentration analyzer can be an electrochemistry gas analyzer, and the fault analyzer can be a microprocessor. The microprocessor processes the gas concentration data and gas component data to detect the faults of the transformer.
[0091] In this embodiment, the gas concentration data is the data of the concentrations of various gases and various gas components in the mixed gas output by the oil-gas separator detected by the gas concentration analyzer.
[0092] The gas component data is the data of the types of gases and gas components included in the mixed gas output by the oil-gas separator detected by the gas component analyzer.
[0093] In this embodiment, the oil-gas separator outputs the mixed gas to the gas concentration analyzer and the gas component analyzer. The gas concentration data is obtained through the gas concentration analyzer, and the gas component data is obtained through the gas component analyzer. The gas concentration data and the gas component data are input into the fault analyzer, and the fault analyzer detects the faults of the transformer according to the gas concentration data and the gas component data.
[0094] In some embodiments, as Figure 10 shown, the monitoring device of the transformer is communicatively connected to the client of the monitoring device of the transformer through a communication port. The monitoring device of the transformer is used to transmit the first monitoring data output by the temperature monitor 111, the second monitoring data output by the gas monitor 113, and the third monitoring data output by the partial discharge monitor 112 to the client.
[0095] Among them, the first monitoring data is the data generated after the temperature monitor 111 collects the temperature data, processes the temperature data, and conducts fault analysis;
[0096] The second monitoring data is the data generated after collecting the gas data in the oil, processing the gas data in the oil, and conducting fault analysis;
[0097] The third monitoring data is the data generated after collecting the partial discharge data, processing the partial discharge data, and conducting fault analysis.
[0098] In this embodiment, the client of the monitoring device of the transformer can be set in the command room of the power system, and the client can be a mobile phone, a tablet computer, a laptop computer, a desktop computer, etc.
[0099] In this embodiment, the client can receive the first monitoring data, the second monitoring data, and the third monitoring data through the communication port, and can display the first monitoring data, the second monitoring data, and the third monitoring data, or can perform data processing according to the first monitoring data, the second monitoring data, and the third monitoring data to analyze the existing faults and possible faults of the transformer, and can give an alarm prompt when the transformer fails.
[0100] In some embodiments, the electromagnetic wave collector is used to collect electrical signals greater than 30 MHz.
[0101] It can be understood that the electromagnetic wave collector can be a ultra-high frequency signal sensor. The ultra-high frequency signal sensor uses the ultra-high frequency (UHF) method to receive the ultra-high frequency electromagnetic waves radiated during the partial discharge process of the transformer, and realizes the detection of partial discharge.
[0102] The ultra-high frequency signal sensor has high sensitivity, strong anti-interference ability, and has a positioning ability, and can accurately locate the position where the partial discharge generates ultra-high frequency signals.
[0103] It should be noted that the position where the ultra-high frequency signal sensor detects the ultra-high frequency signal is lower than the oil level line 133 of the transformer.
[0104] The embodiment of the present application also provides a transformer cabinet.
[0105] The transformer cabinet includes a transformer and the monitoring device of the above-mentioned transformer, and the monitoring device is electrically connected to the transformer.
[0106] The transformer includes an oil tank 130, a coil 132 and an iron core 131 are arranged in the oil tank 130, transformer oil is stored in the oil tank 130, and the coil 132 and the iron core 131 are immersed in the transformer oil.
[0107] According to the transformer cabinet provided by the embodiment of the present application, by setting the temperature monitor 111, the gas monitor 113, and the partial discharge monitor 112, the temperature monitor 111 can collect the temperature data of the position to be collected and determine the faults generated by the transformer according to the temperature data, the gas monitor 113 can collect the gas data in the oil and determine the faults generated by the transformer according to the gas data in the oil, the partial discharge monitor 112 can collect the partial discharge data of the transformer and determine whether there is a partial discharge fault in the transformer. The data collected by the monitoring device is comprehensive, and the performance of the transformer can be detected in all directions, thereby ensuring the stable operation of the power system.
[0108] In some embodiments, as Figure 1 and Figure 3 shown, the transformer cabinet further includes an instrument box room 110.
[0109] The instrument box chamber 110 is disposed on the outer surface of the oil tank 130 of the transformer, and the first data processor, the second data processor, the third data processor, and the electromagnetic wave collector are disposed in the instrument box chamber 110.
[0110] In this embodiment, the instrument box chamber 110 can protect the first data processor, the second data processor, the third data processor, and the electromagnetic wave collector, and improve the overall anti-corrosion level and protection level of the transformer.
[0111] In this embodiment, a flange plate can be provided on the oil tank 130 of the transformer for the temperature collector to enter the oil tank 130 to collect temperature data.
[0112] In this embodiment, radiators can be provided on the outer surface of the oil tank 130 on the opposite sides of the instrument box chamber 110. The radiators are used to dissipate the heat generated when the transformer is working. The instrument box chamber 110 and the radiators are disposed on the opposite sides of the oil tank 130, which can ensure that the operation of the instruments in the instrument box chamber 110 is not affected by the heat dissipated by the radiators.
[0113] In some embodiments, as Figure 1 and Figure 3 shown, the transformer cabinet may further include a switch box chamber 120. The switch of the transformer is placed in the switch box chamber 120, and the pressure relief valve, fuse, oil level gauge, etc. of the transformer may also be placed in the switch box chamber 120.
[0114] The switch, pressure relief valve, fuse, and oil level gauge are provided with corresponding installation openings and bases.
[0115] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same type, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.
[0116] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.
[0117] In the description of the present application, the "first feature" and the "second feature" may include one or more of such features.
[0118] In the description of the present application, the meaning of "a plurality" is two or more.
[0119] In the description of the present application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.
[0120] In the description of the present application, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.
[0121] In the description of this specification, descriptions with reference to terms such as "an embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.
[0122] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A monitoring device for a transformer, characterized in that, Comprising: A temperature monitor, the temperature monitor includes a temperature collector and a first data processor. The temperature collector is disposed at the position to be collected of the transformer. The temperature collector is electrically connected to the first data processor. The temperature collector is used to collect the temperature data of the position to be collected and transmit it to the first data processor; A gas monitor, the gas monitor includes a gas collector and a second data processor. The gas collector is disposed at the flange opening at the bottom of the oil tank of the transformer. The gas collector is electrically connected to the second data processor. The gas collector is used to collect the gas data in the oil of the oil tank of the transformer and transmit it to the second data processor; A partial discharge monitor, the partial discharge monitor includes an electromagnetic wave collector and a third data processor. The electromagnetic wave collector is disposed outside the oil tank of the transformer. The electromagnetic wave collector is electrically connected to the third data processor. The electromagnetic wave collector is used to collect the partial discharge data of the transformer and transmit it to the third data processor.
2. The monitoring device for a transformer according to claim 1, wherein, The temperature collector includes an optical fiber and an insulating probe disposed at one end of the optical fiber. The other end of the optical fiber is electrically connected to the first data processor. The insulating probe is fixed at the position to be collected.
3. The monitoring device for a transformer according to claim 2, characterized in that, The position to be collected where the insulating probe is disposed includes at least one of the coil position of the transformer, the iron core position of the transformer, and the oil tank position of the transformer.
4. The monitoring device of a transformer according to claim 3, characterized in that, The insulating probe is disposed inside the coil of the transformer, outside the coil of the transformer, at the bottom layer of the oil tank of the transformer, and at the oil level line of the transformer.
5. The monitoring device for a transformer according to claim 1, characterized in that, The temperature monitor further includes a timer. The temperature collector is electrically connected to the timer. The temperature collector is used to transmit the temperature data to the timer. The timer is used to time the duration when the temperature data is greater than the temperature data threshold to obtain duration data. The timer is electrically connected to the third data processor. The timer is used to transmit the duration data to the third data processor.
6. The monitoring device for a transformer according to claim 1, characterized in that, The gas collector includes a transformer oil extractor and an oil-gas separator. The input end of the transformer oil extractor communicates with the flange opening at the bottom of the oil tank of the transformer. The output end of the transformer oil extractor communicates with the input end of the oil-gas separator. The output end of the oil-gas separator is electrically connected to the second data processor.
7. The monitoring device for a transformer according to claim 6, characterized in that, The second data processor includes a gas concentration analyzer, a gas component analyzer, and a fault analyzer. The input end of the gas concentration analyzer and the input end of the gas component analyzer are respectively electrically connected to the output end of the oil-gas separator. The output end of the gas concentration analyzer and the output end of the gas component analyzer are respectively electrically connected to the input end of the fault analyzer. The gas concentration analyzer is used to collect the gas concentration data of the gas output from the oil-gas separator and transmit it to the fault analyzer. The gas component analyzer is used to collect the gas component data of the gas output from the oil-gas separator and transmit it to the fault analyzer.
8. The monitoring device for a transformer according to any one of claims 1-7, characterized in that, The monitoring device of the transformer is communicatively connected to the client of the monitoring device of the transformer through a communication port. The monitoring device of the transformer is configured to transmit the first monitoring data output by the temperature monitor, the second monitoring data output by the gas monitor, and the third monitoring data output by the partial discharge monitor to the client.
9. The monitoring device for a transformer according to any one of claims 1-7, characterized in that The electromagnetic wave collector is configured to collect electrical signals greater than 30 MHz.
10. A transformer cabinet, characterized in that, Comprising: A transformer; The monitoring device of the transformer according to any one of claims 1-9, wherein the monitoring device is electrically connected to the transformer.
11. The transformer cabinet according to claim 10, wherein, Further comprising: An instrument box chamber, which is disposed on the outer surface of the oil tank of the transformer, and the first data processor, the second data processor, the third data processor, and the electromagnetic wave collector are disposed in the instrument box chamber.