Low-frequency transformer intelligent control system and control method thereof
By designing an intelligent control system for low-frequency transformers, accurate identification and real-time adjustment of transformer status were achieved, solving the problems of low control accuracy and insufficient intelligence, and improving the reliability and efficiency of the system.
Patent Information
- Application Number
- CN202510978696.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-16
- Publication Date
- 2025-10-21
AI Technical Summary
Existing low-frequency transformer control systems suffer from problems such as low control precision, insufficient intelligence, incomplete data analysis, inadequate transformer condition assessment, increased replacement frequency and cost, high losses, and poor heat dissipation.
A low-frequency transformer intelligent control system was designed, including a control unit, a data acquisition unit, a data identification unit, a data storage unit, and an adjustment unit. By collecting and identifying the transformer's dynamic and static data, and combining them with environmental data, the system performs real-time comparison and adjustment, generates alarm information, and realizes intelligent control of the transformer.
It improves the control precision and intelligence of transformers, reduces losses, extends service life, reduces labor and equipment replacement costs, and enhances heat dissipation capacity.
Smart Images
Figure CN120823693A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of power system control, and in particular to a low-frequency transformer intelligent control system and a control method thereof. Background Art
[0002] Power transformers are important hub equipment in the power system. Their operating conditions are directly related to the safe operation of the power system. Once a failure occurs, it will inevitably lead to partial or even the entire system paralysis, seriously affecting the normal power supply for daily life and production, thereby causing huge losses.
[0003] Low-frequency transformers are used to transmit signal voltage and power, achieve impedance matching between circuits, and provide isolation from DC. Transformers are devices that use the principle of electromagnetic induction to change AC voltage and are primarily composed of a primary coil, a secondary coil, and an iron core. Compared to traditional HVAC and HVDC transmission technologies operating at power frequency, flexible low-frequency AC transmission technology offers advantages such as increased transmission capacity and the elimination of the need for offshore converter stations, providing a more economical and feasible solution for the efficient transmission of large-scale deep-sea wind power. As a key component in flexible low-frequency transmission systems, the unique offshore operating environment requires higher precision, more intelligent control, and more comprehensive data analysis in offshore booster stations. However, existing technologies suffer from low transformer control precision and intelligence, and incomplete data analysis. Transformer data monitoring remains inadequate, and transformer status assessment is inaccurate. These technologies typically only analyze and alert status information without addressing the actual situation. This increases the frequency of transformer replacement, increases costs, and reduces efficiency. Furthermore, these technologies also result in relatively high losses and poor heat dissipation. Summary of the Invention
[0004] The purpose of the present invention is to solve at least one technical problem in the background technology and provide a low-frequency transformer intelligent control system and a control method thereof.
[0005] To achieve the above objectives, the present invention provides a low-frequency transformer intelligent control system, comprising: The control unit receives the data information sent by the data acquisition unit and the working status identification data information sent by the data identification unit, integrates all the data information, calls the data model of the data storage unit, and compares the integrated information with the data model in real time. If the comparison is normal, the transformer continues to operate. If the comparison is abnormal, an alarm message is generated and sent to the alarm unit, and the transformer is adjusted at the same time; A data identification unit obtains transformer parameter values, identifies the transformer working state based on the transformer parameter values, and sends transformer working state identification data information to the control unit; A data acquisition unit collects dynamic data information, static data information of the transformer's working state, and environmental data information around the transformer, and sends the data information to the control unit; A data storage unit storing data including transformer operation data, environmental information around the transformer, and a data model of known types of environmental information; The regulating unit is used to adjust the circulation speed of the transformer oil, reduce the temperature of the transformer and reduce power consumption; The alarm unit receives the abnormal working status signal of the transformer transmitted by the control unit and issues an alarm according to the abnormal signal.
[0006] According to one aspect of the present invention, the transformer parameter values include: transformer current, voltage, temperature, vibration, sound, power consumption, oil flow, number of maintenance times and working hours; Among them, the transformer's current, voltage, temperature, vibration, sound, power consumption, and oil flow are dynamic data information; the number of maintenance times and working hours are static data information.
[0007] According to one aspect of the present invention, the environmental information includes humidity, temperature and wind speed.
[0008] According to one aspect of the present invention, the control unit integrates all data information into: The control unit receives the data information sent by the data acquisition unit and the working state identification data information sent by the data identification unit, and draws a plurality of different real-time dynamic curves according to the data information and the working state identification data information; Among them, the dynamic curves include voltage curve, current curve, temperature curve, transformer vibration curve, sound curve, power consumption curve, working time curve and total maintenance times curve under certain humidity and temperature conditions.
[0009] According to one aspect of the present invention, the data model includes: voltage model curve, current model curve, temperature model curve, transformer vibration model curve, sound model curve, power consumption model curve, working time model curve and total maintenance times model curve under certain humidity and temperature conditions.
[0010] To achieve the above object, the present invention further provides a control method for a low-frequency transformer intelligent control system, comprising: The data recognition unit identifies the working state of the transformer, and the data collection unit collects data information of the corresponding working state of the transformer body and data information of the surrounding environment, and transmits the working state of the transformer and data information under different humidity and temperature conditions to the control unit, which integrates the received data information; The control unit calls the corresponding humidity and temperature data model in the data storage unit according to the integrated information and compares the integrated information to determine whether the integrated information exceeds the theoretical model data and whether it exceeds the alarm threshold and the protection threshold. If it exceeds the theoretical model data but does not exceed the alarm threshold and the protection threshold, the transformer body continues to operate and monitor the transformer body. If it exceeds the alarm threshold and the protection threshold, an alarm process is performed, and at the same time, the state of the data value exceeding the threshold is determined, and the transformer body is adjusted through the adjustment unit; After adjustment, the current integrated information of the transformer body is compared with the data model again. If the integrated information no longer exceeds the threshold, the transformer body is kept operating normally. Otherwise, the control adjustment unit continues to adjust the transformer body. When the upper limit value is adjusted, if the normal operating conditions of the transformer body are still not met, an alarm message is issued and a maintenance alarm is issued through the alarm unit.
[0011] According to one aspect of the present invention, the control unit integrates the received data information into: The control unit draws multiple different real-time dynamic curves based on all the data information received. The dynamic curves include voltage curve, current curve, temperature curve, transformer vibration curve, sound curve, power consumption curve, working time curve and total maintenance times curve under certain humidity and temperature conditions.
[0012] According to one aspect of the present invention, the control unit calls the corresponding humidity and temperature data model in the data storage unit according to the integrated information and compares it with the integrated information as follows: The control unit calls the corresponding humidity and temperature data model curves in the data storage unit according to the multiple different real-time dynamic curves drawn, and compares them one by one with each dynamic curve.
[0013] According to the technical solution of the present invention, the present invention provides an intelligent control system for a low-frequency transformer and a control method thereof. The present invention obtains transformer operating parameter values by collecting transformer operating status information, and simultaneously processes the transformer loss value, the total operating time of the transformer, and the total number of transformer maintenance times during the use of the transformer to obtain the operating data value of the transformer. By combining the transformer operating status and various data features of the transformer, the transformer operating status is identified, the transformer is heat-dissipated, the transformer loss is reduced, and the service life of the transformer is increased. The highly reliable processing is conducive to reducing labor costs and equipment replacement costs, and improving the reliability of the transformer.
[0014] The present invention provides a data acquisition unit that mainly collects dynamic and static data information about the transformer's operating status, as well as information about the transformer's surrounding environment. This information is then sent to the control unit as a basis for processing. This improves the transformer's stability, allows for more effective and real-time processing of the transformer, and enhances the robustness and intelligence of transformer control. The present invention provides a data identification unit, which realizes the identification of the transformer working state by combining the transformer operating state and the transformer static characteristics, making the transformer working state identification result more accurate, and considering both dynamic and static aspects, the reliability is higher.
[0015] The present invention provides a control unit, which is mainly used to receive data information from the data acquisition unit, and at the same time collect various status information of the data from the data identification unit, integrate the information, call the data model of the data storage unit, perform real-time comparison, and send alarm information to the alarm unit. At the same time, it effectively adjusts the transformer to ensure that the transformer can adapt to different working conditions in real time, ensure that the transformer loss is reduced, the heat dissipation capacity is enhanced, and the life of the transformer is improved.
[0016] The present invention is provided with an adjustment unit, which is mainly used to adjust the circulation speed of transformer oil, reduce the temperature of the transformer, reduce power consumption, and reduce the damage rate of the transformer.
[0017] The present invention provides a data storage unit for storing data during transformer operation and other environmental data, which serves as a basis for data analysis by the control unit. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The figure schematically shows a structural block diagram of a low-frequency transformer intelligent control system according to an embodiment of the present invention. DETAILED DESCRIPTION
[0019] The present invention will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only intended to enable those skilled in the art to better understand and implement the present invention, rather than to imply any limitation on the scope of the present invention.
[0020] As used herein, the term "including" and variations thereof are to be interpreted as open-ended terms meaning "including, but not limited to." The term "based on" is to be interpreted as "based, at least in part, on." The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment."
[0021] Figure 1 The following schematically shows a block diagram of a low-frequency transformer intelligent control system according to an embodiment of the present invention. Figure 1As shown, in this embodiment, the low-frequency transformer intelligent control system includes: The control unit 1 receives the data information sent by the data acquisition unit and the working status identification data information sent by the data identification unit, integrates all the data information, calls the data model of the data storage unit, and compares the integrated information with the data model in real time. If the comparison is normal, the transformer continues to operate. If the comparison is abnormal, an alarm message is generated and sent to the alarm unit, and the transformer is adjusted at the same time; The data identification unit 2 obtains the parameter value of the transformer (transformer body 7), identifies the working state of the transformer based on the transformer parameter value, and sends the transformer working state identification data information to the control unit; The data acquisition unit 3 collects dynamic data information, static data information of the transformer working state and environmental data information around the transformer, and sends the data information to the control unit; A data storage unit 4 stores a data model including data on the operation of the transformer, environmental information around the transformer, and environmental information of known types; The regulating unit 5 is used to adjust the circulation speed of the transformer oil, reduce the temperature of the transformer and reduce power consumption; The alarm unit 6 receives the abnormal working state signal of the transformer transmitted by the control unit and generates an alarm according to the abnormal signal.
[0022] Furthermore, according to an embodiment of the present invention, the transformer parameter values include: current, voltage, temperature, vibration, sound, power consumption, oil flow, number of maintenance times and working hours of the transformer; Among them, the transformer's current, voltage, temperature, vibration, sound, power consumption, and oil flow are dynamic data information; the number of maintenance times and working hours are static data information.
[0023] Furthermore, according to an embodiment of the present invention, the environmental information includes humidity, temperature and wind speed.
[0024] Furthermore, according to one embodiment of the present invention, the control unit integrates all data information into: The control unit receives the data information sent by the data acquisition unit and the working state identification data information sent by the data identification unit, and draws a plurality of different real-time dynamic curves according to the data information and the working state identification data information; Among them, the dynamic curves include voltage curve, current curve, temperature curve, transformer vibration curve, sound curve, power consumption curve, working time curve and total maintenance times curve under certain humidity and temperature conditions.
[0025] Furthermore, according to one embodiment of the present invention, the data model includes: a voltage model curve, a current model curve, a temperature model curve, a transformer vibration model curve, a sound model curve, a power consumption model curve, a working time model curve and a total maintenance times model curve under certain humidity and temperature conditions.
[0026] Furthermore, according to one embodiment of the present invention, an oil column and a bushing are respectively installed on the inner surface of the upper end of the above-mentioned transformer body 7, a heat sink is installed on the outer surface of the front end of the transformer body, and an adjustment plate is rotatably connected to the inner surface of the front end of the transformer body. The adjustment plate can be adjusted by the above-mentioned adjustment unit and can perform switching movements. A flow control device is provided on the above-mentioned oil column, and the circulation speed of the transformer oil is adjusted by the adjustment unit.
[0027] In this embodiment, the following steps are required when designing the transformer oil and the regulating plate: Conduct multiple tests on different types of transformer oil, oil columns, bushings, heat sinks, and adjustment plates in high-temperature, low-temperature, and high-humidity environments to obtain test data for each component under different extreme conditions; Analyze each data and optimize and adjust the weak parts of transformer oil, oil column, bushing, heat sink and regulating plate to ensure the safety and reliability of actual operation of the transformer; Install, produce, and test the control and main parts, and record the authenticity of the data; The test results are checked again, the design solution is optimized, and the final transformer body is produced and put into use in the above-mentioned system of the present invention.
[0028] Furthermore, to achieve the above-mentioned object, the present invention also provides a control method for a low-frequency transformer intelligent control system, comprising: The data recognition unit identifies the working state of the transformer, and the data collection unit collects data information of the corresponding working state of the transformer body and data information of the surrounding environment, and transmits the working state of the transformer and data information under different humidity and temperature conditions to the control unit, which integrates the received data information; The control unit calls the corresponding humidity and temperature data model in the data storage unit according to the integrated information and compares the integrated information to determine whether the integrated information exceeds the theoretical model data and whether it exceeds the alarm threshold and the protection threshold. If it exceeds the theoretical model data but does not exceed the alarm threshold and the protection threshold, the transformer body continues to operate and monitor the transformer body. If it exceeds the alarm threshold and the protection threshold, an alarm process is performed, and at the same time, the state of the data value exceeding the threshold is determined, and the transformer body is adjusted through the adjustment unit; After adjustment, the current integrated information of the transformer body is compared with the data model again. If the integrated information no longer exceeds the threshold, the transformer body is kept operating normally. Otherwise, the control adjustment unit continues to adjust the transformer body. When the upper limit value is adjusted, if the normal operating conditions of the transformer body are still not met, an alarm message is issued through the alarm unit to issue a maintenance alarm, and then the transformer is shut down for maintenance and restarted after maintenance.
[0029] Furthermore, according to one embodiment of the present invention, the control unit integrates the received data information into: The control unit draws multiple different real-time dynamic curves based on all the data information received. The dynamic curves include voltage curve, current curve, temperature curve, transformer vibration curve, sound curve, power consumption curve, working time curve and total maintenance times curve under certain humidity and temperature conditions.
[0030] Furthermore, according to an embodiment of the present invention, the control unit calls the corresponding humidity and temperature data model in the data storage unit according to the integrated information and compares it with the integrated information as follows: The control unit calls the corresponding humidity and temperature data model curves in the data storage unit according to the multiple different real-time dynamic curves drawn, and compares them one by one with each dynamic curve.
[0031] According to the above scheme of the present invention, the present invention provides an intelligent control system and a control method for a low-frequency transformer. The present invention obtains transformer operating parameter values by collecting transformer operating status information, and processes the transformer loss value, the total operating time of the transformer, and the total number of transformer maintenance times during the use of the transformer to obtain the transformer operating data value. By combining the transformer operating status and various data features of the transformer, the transformer working status is identified, the transformer is heat-dissipated, the transformer loss is reduced, and the service life of the transformer is increased. The highly reliable processing is conducive to reducing labor costs and equipment replacement costs, and improving the reliability of the transformer.
[0032] The present invention provides a data acquisition unit that mainly collects dynamic and static data information about the transformer's operating status, as well as information about the transformer's surrounding environment. This information is then sent to the control unit as a basis for processing. This improves the transformer's stability, allows for more effective and real-time processing of the transformer, and enhances the robustness and intelligence of transformer control. The present invention provides a data identification unit, which realizes the identification of the transformer working state by combining the transformer operating state and the transformer static characteristics, making the transformer working state identification result more accurate, and considering both dynamic and static aspects, the reliability is higher.
[0033] The present invention provides a control unit, which is mainly used to receive data information from the data acquisition unit, and at the same time collect various status information of the data from the data identification unit, integrate the information, call the data model of the data storage unit, perform real-time comparison, and send alarm information to the alarm unit. At the same time, it effectively adjusts the transformer to ensure that the transformer can adapt to different working conditions in real time, ensure that the transformer loss is reduced, the heat dissipation capacity is enhanced, and the life of the transformer is improved.
[0034] The present invention is provided with an adjustment unit, which is mainly used to adjust the circulation speed of transformer oil, reduce the temperature of the transformer, reduce power consumption, and reduce the damage rate of the transformer.
[0035] The present invention provides a data storage unit for storing data during transformer operation and other environmental data, which serves as a basis for data analysis by the control unit.
[0036] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.
[0037] It should be understood that the size of the serial numbers of each step in the content of the invention and the implementation methods of the present invention does not absolutely mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the implementation methods of the present invention.
Claims
1. Low-frequency transformer intelligent control system, characterized in that: include: The control unit receives the data information sent by the data acquisition unit and the working status identification data information sent by the data identification unit, integrates all the data information, calls the data model of the data storage unit, and compares the integrated information with the data model in real time. If the comparison is normal, the transformer continues to operate. If the comparison is abnormal, an alarm message is generated and sent to the alarm unit, and the transformer is adjusted at the same time; A data identification unit obtains transformer parameter values, identifies the transformer working state based on the transformer parameter values, and sends transformer working state identification data information to the control unit; A data acquisition unit collects dynamic data information, static data information of the transformer's working state, and environmental data information around the transformer, and sends the data information to the control unit; A data storage unit storing data including transformer operation data, environmental information around the transformer, and a data model of known types of environmental information; The regulating unit is used to adjust the circulation speed of the transformer oil, reduce the temperature of the transformer and reduce power consumption; The alarm unit receives the abnormal working status signal of the transformer transmitted by the control unit and issues an alarm according to the abnormal signal.
2. The low-frequency transformer intelligent control system according to claim 1, characterized in that: The transformer parameter values include: transformer current, voltage, temperature, vibration, sound, power consumption, oil flow, maintenance times and working hours; Among them, the transformer's current, voltage, temperature, vibration, sound, power consumption, and oil flow are dynamic data information; the number of maintenance times and working hours are static data information.
3. The low-frequency transformer intelligent control system according to claim 1, characterized in that: The environmental information includes humidity, temperature and wind speed.
4. The low-frequency transformer intelligent control system according to claim 1, characterized in that: The control unit integrates all data information into: The control unit receives the data information sent by the data acquisition unit and the working state identification data information sent by the data identification unit, and draws a plurality of different real-time dynamic curves according to the data information and the working state identification data information; Among them, the dynamic curves include voltage curve, current curve, temperature curve, transformer vibration curve, sound curve, power consumption curve, working time curve and total maintenance times curve under certain humidity and temperature conditions.
5. The low-frequency transformer intelligent control system according to any one of claims 1 to 4, characterized in that: The data model includes: a voltage model curve, a current model curve, a temperature model curve, a transformer vibration model curve, a sound model curve, a power consumption model curve, a working time model curve and a total maintenance times model curve under certain humidity and temperature conditions.
6. The control method of the low-frequency transformer intelligent control system according to any one of claims 1 to 5, characterized in that: include: The data recognition unit identifies the working state of the transformer, and the data collection unit collects data information of the corresponding working state of the transformer body and data information of the surrounding environment, and transmits the working state of the transformer and data information under different humidity and temperature conditions to the control unit, which integrates the received data information; The control unit calls the corresponding humidity and temperature data model in the data storage unit according to the integrated information and compares the integrated information to determine whether the integrated information exceeds the theoretical model data and whether it exceeds the alarm threshold and the protection threshold. If it exceeds the theoretical model data but does not exceed the alarm threshold and the protection threshold, the transformer body continues to operate and monitor the transformer body. If it exceeds the alarm threshold and the protection threshold, an alarm process is performed, and at the same time, the state of the data value exceeding the threshold is determined, and the transformer body is adjusted through the adjustment unit; After adjustment, the current integrated information of the transformer body is compared with the data model again. If the integrated information no longer exceeds the threshold, the transformer body is kept operating normally. Otherwise, the control adjustment unit continues to adjust the transformer body. When the upper limit value is adjusted, if the normal operating conditions of the transformer body are still not met, an alarm message is issued and a maintenance alarm is issued through the alarm unit.
7. The control method according to claim 6, characterized in that: The control unit integrates the received data information into: The control unit draws multiple different real-time dynamic curves based on all the data information received. The dynamic curves include voltage curve, current curve, temperature curve, transformer vibration curve, sound curve, power consumption curve, working time curve and total maintenance times curve under certain humidity and temperature conditions.
8. The control method according to claim 7, characterized in that: The control unit calls the corresponding humidity and temperature data model in the data storage unit according to the integrated information and compares it with the integrated information as follows: The control unit calls the corresponding humidity and temperature data model curves in the data storage unit according to the multiple different real-time dynamic curves drawn, and compares them one by one with each dynamic curve.