Temperature control system and transformer
By designing a transformer temperature control system with dual loop power supply and automatic start function, the existing system's poor reliability and low safety are solved, and reliable cooling of the transformer winding and stability of power supply are achieved.
Patent Information
- Application Number
- CN202411447621.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-02-28
Smart Images
Figure CN119536398A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of transformers, and in particular, to a temperature control system and a transformer. Background Art
[0002] With the advancement of science and technology and the development of industry, the requirements of various types of electrical equipment for voltage levels and power quality are becoming increasingly diverse. Through flexible voltage conversion capabilities, transformers can meet the power needs of different equipment and provide reliable power support for various fields such as industry, agriculture, transportation, and communications. Since transformers generate heat during operation, if they are not controlled, it may cause equipment damage or even cause safety accidents. The transformer temperature control system can effectively prevent overheating, extend equipment life, improve operating efficiency, and ensure the stability of power supply by monitoring and controlling the temperature of the transformer in real time and timely cooling the transformer windings through cooling devices. However, the transformer temperature control system in the prior art has problems of poor reliability and low safety. Summary of the invention
[0003] The purpose of the present disclosure is to provide a temperature control system, which is applied to a transformer. The temperature control system includes a power supply module, a first power switch, a second power switch, a target switch, a first temperature acquisition component, a second temperature acquisition component, a first controller, a second controller and a cooling device. The power supply module is connected to a power supply end of the first controller and a power supply end of the cooling device through the first power switch, one end of the target switch is connected to a control end of the first controller, and the other end of the target switch is connected to a control end of the cooling device. The power supply module is also connected to the cooling device through the second power switch. The first temperature acquisition component and the second temperature acquisition component are respectively arranged on an insulating layer of a transformer winding for collecting the temperature of the transformer winding. The cooling device is arranged on the transformer winding for cooling the transformer winding. The first controller is connected to the first temperature acquisition component, and is used to close the first power switch and the target switch to start the cooling device when the first temperature acquired by the first temperature acquisition component is greater than or equal to a first preset temperature threshold; The second controller is connected to the first controller and the second temperature acquisition component, and is used to disconnect the first power switch, close the second power switch, and start the cooling device if it is determined that the second temperature collected by the second temperature acquisition component is greater than or equal to the first preset temperature threshold when the first temperature acquisition component and / or the first controller fails.
[0004] Optionally, the transformer includes a multi-phase winding, and the cooling device includes a high-voltage side fan and a low-voltage side fan, wherein the high-voltage side fan is arranged on the high-voltage side of each phase winding for cooling the high-voltage side winding, and the low-voltage side fan is arranged on the low-voltage side of each phase winding for cooling the low-voltage side winding. The first controller is connected to the high-pressure side fan and the low-pressure side fan of each phase winding respectively, and is used to start the high-pressure side fan of each phase winding and the low-pressure side fan of each phase winding when the first temperature is greater than or equal to the preset temperature threshold; The second controller is used to start the high-pressure side fan of each phase winding and the low-pressure side fan of each phase winding if it is determined that the second temperature is greater than or equal to the preset temperature threshold when the first temperature acquisition component and / or the first controller fails.
[0005] Optionally, the cooling device includes a first high-pressure side fan and a first switch assembly, the first switch assembly includes a first main contact, a first low-pressure side fan and a second switch assembly, the second switch assembly includes a second main contact, a second high-pressure side fan and a third switch assembly, the third switch assembly includes a third main contact, a second low-pressure side fan and a fourth switch assembly, the fourth switch assembly includes a fourth main contact, a third high-pressure side fan and a fifth switch assembly, the fifth switch assembly includes a fifth main contact, a third low-pressure side fan and a sixth switch assembly, the sixth switch assembly includes a sixth main contact, the first controller is connected in parallel with the first switch assembly, the second switch assembly, the third switch assembly, the fourth switch assembly, the fifth switch assembly and the sixth switch assembly, The first controller is used to control the first main contact to be disconnected when the first high-pressure side fan fails; to control the second main contact to be disconnected when the first low-pressure side fan fails; to control the third main contact to be disconnected when the second high-pressure side fan fails; to control the fourth main contact to be disconnected when the second low-pressure side fan fails; to control the fifth main contact to be disconnected when the third high-pressure side fan fails; and to control the sixth main contact to be disconnected when the third low-pressure side fan fails.
[0006] Optionally, the first switch assembly further includes a first normally open auxiliary contact, the second switch assembly further includes a second normally open auxiliary contact, the third switch assembly further includes a third normally open auxiliary contact, the fourth switch assembly further includes a fourth normally open auxiliary contact, the fifth switch assembly further includes a fifth normally open auxiliary contact, and the sixth switch assembly further includes a sixth normally open auxiliary contact. The first controller is configured to send a first fault signal to the second controller when the first main contact is disconnected and the first normally open auxiliary contact is closed, send a second fault signal to the second controller when the second main contact is disconnected and the second normally open auxiliary contact is closed, send a third fault signal to the second controller when the third main contact is disconnected and the third normally open auxiliary contact is closed, send a fourth fault signal to the second controller when the fourth main contact is disconnected and the fourth normally open auxiliary contact is closed, send a fifth fault signal to the second controller when the fifth main contact is disconnected and the fifth normally open auxiliary contact is closed, and send a sixth fault signal to the second controller when the sixth main contact is disconnected and the sixth normally open auxiliary contact is closed; The second controller is used to output a first fault prompt message when receiving at least one of the first fault signal, the second fault signal, the third fault signal, the fourth fault signal, the fifth fault signal or the sixth fault signal.
[0007] Optionally, the first controller includes a seventh normally open contact, The first controller is further configured to close the seventh normally open contact and send a seventh fault signal to the second controller in the event of a fault in the first controller; The second controller is used to output second fault prompt information when receiving the seventh fault signal.
[0008] Optionally, the first controller includes an eighth normally open contact, The first controller is further configured to close the eighth normally open contact and send an alarm signal to the second controller when the first temperature is greater than or equal to the preset temperature threshold; The second controller is used to output over-temperature alarm information when receiving the alarm signal.
[0009] Optionally, the temperature control system further comprises an alarm component, wherein the alarm component is connected to the first controller. The first controller is used to control the alarm component to start a first alarm function when the first temperature is greater than a second preset temperature threshold.
[0010] Optionally, the alarm component is connected to the second controller. The second controller is used to control the alarm component to start the second alarm function when the first temperature acquisition component and / or the first controller fails.
[0011] A second aspect of the present disclosure provides a transformer, comprising the temperature control system described in the first aspect.
[0012] Through the above technical solution, the temperature control system includes a power supply module, a first power switch, a second power switch, a target switch, a first temperature acquisition component, a second temperature acquisition component, a first controller, a second controller and a cooling device. The power supply module is connected to the power supply end of the first controller and the power supply end of the cooling device through the first power switch, one end of the target switch is connected to the control end of the first controller, and the other end of the target switch is connected to the control end of the cooling device. The power supply module is also connected to the cooling device through the second power switch. The first temperature acquisition component and the second temperature acquisition component are respectively arranged on the insulation layer of the transformer winding for collecting the temperature of the transformer winding. The cooling The device is arranged on the transformer winding and is used for cooling the transformer winding. The first controller is connected to the first temperature acquisition component and is used for disconnecting the second power switch and closing the first power switch and the target switch to start the cooling device when the first temperature collected by the first temperature acquisition component is greater than or equal to the first preset temperature threshold. The second controller is connected to the first controller and the second temperature acquisition component and is used for disconnecting the first power switch, closing the second power switch and starting the cooling device when it is determined that the second temperature collected by the second temperature acquisition component is greater than or equal to the first preset temperature threshold in the event of a failure of the first temperature acquisition component and / or the first controller. In this way, the power module and the first power switch are connected to the first controller and the cooling device, and the power module and the second power switch are connected to the cooling device, providing a dual-circuit power supply mode for the cooling device, which can ensure the reliability of cooling the transformer winding through the cooling device. In the event of a failure of the first temperature acquisition component and / or the first controller, if it is determined that the second temperature collected by the second temperature acquisition component is greater than or equal to the preset temperature threshold, the cooling device is started, which can avoid losing the temperature monitoring of the transformer, and can also avoid the problem of being unable to cool the transformer in time due to the failure of the first temperature acquisition component and / or the first controller, thereby effectively improving reliability and safety, and further effectively improving user experience and satisfaction.
[0013] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 is a schematic diagram of a temperature control system according to an exemplary embodiment of the present disclosure; Figure 2 is a schematic diagram of another temperature control system according to an exemplary embodiment of the present disclosure; Figure 3 is a schematic diagram of yet another temperature control system according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION
[0015] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.
[0016] Before introducing the specific implementation methods of the present disclosure in detail, the application scenarios of the present disclosure are first described as follows. The present disclosure can be applied to the temperature control system of a transformer. The temperature control system of the transformer in the prior art includes a set of temperature sensors and a cooling fan. When the temperature sensor fails, the monitoring and control of the transformer temperature will be lost. In addition, the power module is connected to the temperature controller and the cooling fan, and a single-circuit power supply is adopted. When the temperature sensor or the temperature controller fails, the winding of the transformer cannot be cooled in time, resulting in poor reliability and low safety.
[0017] In order to solve the above technical problems, the present disclosure provides a temperature control system, which includes a power supply module, a first power switch, a second power switch, a target switch, a first temperature acquisition component, a second temperature acquisition component, a first controller, a second controller and a cooling device, wherein the power supply module is connected to a power supply end of the first controller and a power supply end of the cooling device through the first power switch, one end of the target switch is connected to a control end of the first controller, and the other end of the target switch is connected to a control end of the cooling device, the power supply module is also connected to the cooling device through the second power switch, and the first temperature acquisition component and the second temperature acquisition component are respectively arranged on the insulating layer of the transformer winding for collecting the temperature of the transformer winding. the cooling device is arranged on the transformer winding and is used to cool the transformer winding; the first controller is connected with the first temperature acquisition component and is used to disconnect the second power switch and close the first power switch and the target switch to start the cooling device when the first temperature acquired by the first temperature acquisition component is greater than or equal to the first preset temperature threshold; the second controller is connected with the first controller and the second temperature acquisition component and is used to disconnect the first power switch, close the second power switch and start the cooling device when it is determined that the second temperature acquired by the second temperature acquisition component is greater than or equal to the first preset temperature threshold in case of failure of the first temperature acquisition component and / or the first controller. In this way, the power module and the first power switch are connected to the first controller and the cooling device, and the power module and the second power switch are connected to the cooling device, providing a dual-circuit power supply mode for the cooling device, which can ensure the reliability of cooling the transformer winding through the cooling device. In the event of a failure of the first temperature acquisition component and / or the first controller, if it is determined that the second temperature collected by the second temperature acquisition component is greater than or equal to the preset temperature threshold, the cooling device is started, which can avoid losing the temperature monitoring of the transformer, and can also avoid the problem of being unable to cool the transformer in time due to the failure of the first temperature acquisition component and / or the first controller, thereby effectively improving reliability and safety, and further effectively improving user experience and satisfaction.
[0018] Figure 1 is a schematic diagram of a temperature control system according to an exemplary embodiment of the present disclosure; Figure 1As shown, the temperature control system 100 is applied to a transformer 1010. The temperature control system 100 includes a power module 101, a first power switch 102, a target switch 109, a second power switch 103, a first temperature acquisition component 104, a second temperature acquisition component 105, a first controller 106, a second controller 107 and a cooling device 108. The power module 101 is connected to the power supply end of the first controller 106 and the power supply end of the cooling device 108 through the first power switch, one end of the target switch 109 is connected to the control end of the first controller 106, and the other end of the target switch 109 is connected to the control end of the cooling device 108. The power module 101 is also connected to the cooling device 108 through the second power switch 103. The first temperature acquisition component 104 and the second temperature acquisition component 105 are respectively arranged on the insulation layer of the transformer 1010 winding for collecting the temperature of the transformer 1010 winding. The cooling device 108 is arranged on the transformer winding 1010 group for cooling the transformer 1010 winding. The first controller 106 is connected to the first temperature acquisition component 104, and is used to disconnect the second power switch 103 and close the first power switch 102 and the target switch 109 to start the cooling device 108 when the first temperature acquired by the first temperature acquisition component 104 is greater than or equal to a preset temperature threshold; The second controller 107 is connected to the first controller 106 and the second temperature collection component 105, and is used to disconnect the first power switch 102, close the second power switch 103, and start the cooling device 108 if it is determined that the second temperature collected by the second temperature collection component 105 is greater than or equal to the preset temperature threshold when the first temperature collection component 104 and / or the first controller 106 fails.
[0019] The transformer 1010 may be an excitation transformer or a transformer of other forms, the first temperature acquisition component 104 may be a temperature sensor or a temperature measuring device of other forms, the second temperature acquisition component 105 may be a temperature sensor or a temperature measuring device of other forms, the cooling device 108 may be a cooling fan or a cooling device of other forms. The target switch 109 may be a relay or a switch of other forms, the first controller 106 controls the start of the cooling device 108 by closing the target switch 109, the first controller 106 may be a temperature controller, the second controller 107 may be a DCS system (Distributed Control System), the power module 101 may be an AC power supply (380V power system for power plants) or a power supply of other forms, the preset temperature threshold may be 80 degrees, 90 degrees, 100 degrees, or other pre-set temperature thresholds.
[0020] In the case where the first temperature collected by the first temperature collection component 104 is greater than or equal to the preset temperature threshold, the second power switch 103 is disconnected, the first power switch 102 and the target switch 109 are closed, and the cooling device 108 is started. By closing the first power switch 102 and the target switch 109, the power module 101 supplies power to the cooling device 108 through the first power switch 102. In the case where the first temperature is greater than or equal to the preset temperature threshold, the cooling device 108 is started to cool the winding of the transformer 1010 by closing the target switch 109. In the case where the first temperature is less than the preset temperature threshold, the cooling device 108 is turned off by disconnecting the target switch 109. In the case where the first temperature collection component 104 and / or the first controller 106 fails, if it is determined that the second temperature collected by the second temperature collection component 105 is greater than or equal to the preset temperature threshold, the first power switch 102 is disconnected, the second power switch 103 is closed, and the cooling device 108 is started. By closing the second power switch 103, the power module 101 supplies power to the cooling device 108 through the second power switch 103. When the first temperature acquisition component 104 and / or the first controller 106 fails and the second temperature is greater than or equal to a preset temperature threshold, the cooling device 108 can be manually started to cool the transformer 1010 winding, and when the second temperature is less than the preset temperature threshold, the cooling device 108 can be turned off.
[0021] It should be noted that the state of the first power switch 102 is in the closed state by default, the first temperature acquisition component 104 and the second temperature acquisition component 105 have three plug-in measuring points, which are respectively inserted between the insulation layers of the transformer windings and fixed with high temperature resistant insulating glue or insulating clips, the first temperature acquisition component 104 is connected to the first controller 106, and the first temperature signal is uploaded to the first controller 106, and the second temperature acquisition component 105 is connected to the second controller 107 through a wire, and the temperature signal is uploaded to the second controller 107 through a metal armored high temperature resistant compensation wire. The cooling device 108 is fixed to the base of the transformer 1010 core in a bolted manner. The first power switch 102 and the second power switch 103 are not closed at the same time.
[0022] In the above technical solution, the power module is connected to the cooling device through the first power switch, and the power module is also connected to the cooling device through the second power switch, providing a dual-circuit power supply mode for the cooling device, which can ensure the reliability of cooling the transformer winding through the cooling device. In the event of a failure of the first temperature acquisition component and / or the first controller, if it is determined that the second temperature collected by the second temperature acquisition component is greater than or equal to the preset temperature threshold, the cooling device is started, which can avoid losing the temperature monitoring of the transformer, and can avoid the problem of being unable to cool the transformer in time due to the failure of the first temperature acquisition component and / or the first controller, thereby effectively improving reliability and safety, and further effectively improving the user experience and satisfaction.
[0023] Optionally, the transformer 1010 includes a multi-phase winding, and the cooling device 108 includes a high-voltage side fan and a low-voltage side fan, wherein the high-voltage side fan is arranged on the high-voltage side of each phase winding for cooling the high-voltage side winding, and the low-voltage side fan is arranged on the low-voltage side of each phase winding for cooling the low-voltage side winding. The first controller 106 is connected to the high-pressure side fan and the low-pressure side fan of each phase winding respectively, and is used to start the high-pressure side fan of each phase winding and the low-pressure side fan of each phase winding when the first temperature is greater than or equal to the preset temperature threshold; The second controller 107 is used to start the high-pressure side fan of each phase winding and the low-pressure side fan of each phase winding if it is determined that the second temperature is greater than or equal to the preset temperature threshold when the first temperature acquisition component 104 and / or the first controller 106 fails.
[0024] Wherein, the transformer 1010 can be a three-phase winding, a six-phase winding or a single-phase winding, which is not specifically limited here. In the case where the transformer is a three-phase winding, the cooling device includes a first high-pressure side fan, a first low-pressure side fan, a second high-pressure side fan, a second low-pressure side fan, a third high-pressure side fan and a third low-pressure side fan. The first high-pressure side fan is arranged on the high-pressure side of the first winding, the first low-pressure side fan is arranged on the low-pressure side of the first winding, the second high-pressure side fan is arranged on the high-pressure side of the second winding, the second low-pressure side fan is arranged on the low-pressure side of the second winding, the third high-pressure side fan is arranged on the high-pressure side of the third winding, and the third low-pressure side fan is arranged on the low-pressure side of the third winding.
[0025] The above technical scheme starts the high-pressure side fan of each phase winding and the low-pressure side fan of each phase winding when the first temperature is greater than or equal to the preset temperature threshold, or starts the high-pressure side fan of each phase winding and the low-pressure side fan of each phase winding if it is determined that the second temperature is greater than or equal to the preset temperature threshold when the first temperature acquisition component and / or the first controller fails. This ensures that when the temperature of the transformer winding is greater than the preset temperature threshold, the cooling device is started in time to cool the transformer winding, thereby avoiding safety accidents caused by excessive transformer temperature, thereby effectively improving the reliability and safety of the temperature control system, and further effectively improving the user experience and satisfaction.
[0026] Optionally, Figure 2 is a schematic diagram of another temperature control system according to an exemplary embodiment of the present disclosure; Figure 2 As shown, the cooling device 108 includes a first high-pressure side fan A01 and a first switch assembly A02, the first switch assembly A02 includes a first main contact A02, a first low-pressure side fan B01 and a second switch assembly B02, the second switch assembly B02 includes a second main contact B02, a second high-pressure side fan C01 and a third switch assembly C02, the third switch assembly C02 includes a third main contact C02, a second low-pressure side fan D01 and a fourth switch assembly D02, the fourth switch assembly D02 includes a fourth main contact D02, a third high-pressure side fan E01 and a fifth switch assembly E02, the fifth switch assembly E02 includes a fifth main contact E02, a third low-pressure side fan F01 and a sixth switch assembly F02, the sixth switch assembly F02 includes a sixth main contact F02, the first controller 106 is connected in parallel with the first switch assembly A02, the second switch assembly B02, the third switch assembly C02, the fourth switch assembly D02, the fifth switch assembly E02 and the sixth switch assembly F02, The first controller 106 is used to control the first main contact A02 to be disconnected when the first high-pressure side fan A01 fails; to control the second main contact B02 to be disconnected when the first low-pressure side fan B01 fails; to control the third main contact C02 to be disconnected when the second high-pressure side fan C01 fails; to control the fourth main contact D02 to be disconnected when the second low-pressure side fan D01 fails; to control the fifth main contact E02 to be disconnected when the third high-pressure side fan E01 fails; and to control the sixth main contact F02 to be disconnected when the third low-pressure side fan F01 fails.
[0027] The first switch assembly A02, the second switch assembly B02, the third switch assembly C02, the fourth switch assembly D02, the fifth switch assembly E02 and the sixth switch assembly F02 may be air switches or other forms of circuit breakers. The first main contact A02, the second main contact B02, the third main contact C02, the fourth main contact D02, the fifth main contact E02 and the sixth main contact F02 are used to connect or disconnect the current provided by the power module 101 through the first power switch 102 or the second power switch 103. When the first switch component A02 detects that the first high-pressure side fan A01 is overloaded or short-circuited, the first main contact A02 is automatically disconnected, and the connection between the first high-pressure side fan A01 and the power module 101 is cut off; when the second switch component B02 detects that the first low-pressure side fan B01 is overloaded or short-circuited, the second main contact B02 is automatically disconnected, and the connection between the first low-pressure side fan B01 and the power module 101 is cut off; when the third switch component C02 detects that the second high-pressure side fan C01 is overloaded or short-circuited, the third main contact C02 is automatically disconnected, and the connection between the second high-pressure side fan C01 and the power module 101 is cut off; When the fourth switch component D02 detects that the second low-pressure side fan D01 is overloaded or short-circuited, the fourth main contact D02 automatically disconnects, cutting off the connection between the second low-pressure side fan D01 and the power module 101; when the fifth switch component E02 detects that the third high-pressure side fan E01 is overloaded or short-circuited, the fifth main contact E02 automatically disconnects, cutting off the connection between the third high-pressure side fan E01 and the power module 101; when the sixth switch component F02 detects that the third low-pressure side fan F01 is overloaded or short-circuited, the sixth main contact F02 automatically disconnects, cutting off the connection between the third low-pressure side fan F01 and the power module 101.
[0028] The above technical scheme, in the event of a failure of the high-pressure side fan and / or the low-pressure side fan, controls the main contacts corresponding to the failure of the high-pressure side fan and / or the low-pressure side fan to be disconnected, thereby cutting off the connection between the high-pressure side fan and / or the low-pressure side fan and the power supply module, thereby protecting the circuit from damage caused by overload and short circuit, thereby improving the safety and reliability of the system.
[0029] Optionally, Figure 2 For example, the first switch assembly A02 further includes a first normally open auxiliary contact A02, the second switch assembly B02 further includes a second normally open auxiliary contact B02, the third switch assembly C02 further includes a third normally open auxiliary contact C02, the fourth switch assembly D02 further includes a fourth normally open auxiliary contact D02, the fifth switch assembly E02 further includes a fifth normally open auxiliary contact E02, the sixth switch assembly F02 further includes a sixth normally open auxiliary contact F02, The first controller 106 is used to send a first fault signal to the second controller 107 when the first main contact A02 is disconnected and the first normally open auxiliary contact A02 is closed, send a second fault signal to the second controller 107 when the second main contact B02 is disconnected and the second normally open auxiliary contact B02 is closed, send a third fault signal to the second controller 107 when the third main contact C02 is disconnected and the third normally open auxiliary contact C02 is closed, send a fourth fault signal to the second controller 107 when the fourth main contact D02 is disconnected and the fourth normally open auxiliary contact D02 is closed, send a fifth fault signal to the second controller 107 when the fifth main contact E02 is disconnected and the fifth normally open auxiliary contact E02 is closed, and send a sixth fault signal to the second controller 107 when the sixth main contact F02 is disconnected and the sixth normally open auxiliary contact F02 is closed; The second controller 107 is used to output a first fault prompt message when receiving at least one of the first fault signal, the second fault signal, the third fault signal, the fourth fault signal, the fifth fault signal or the sixth fault signal.
[0030] Wherein, the first fault information is used to characterize the specific fault information of the cooling device 108, and the first fault prompt information may include the fault prompt information of a high-pressure side cooling fan or a low-pressure side cooling fan, and may also include the fault prompt information of multiple high-pressure side cooling fans and low-pressure side cooling fans. In the case of receiving the first fault signal, the first fault prompt information may be "the first high-pressure side fan is faulty, please repair it in time"; in the case of receiving the first fault signal and the second fault signal, the first fault prompt information may be "the first high-pressure side fan and the first low-pressure side fan are faulty, please repair it in time"; in the case of receiving the first fault signal, the second fault signal and the sixth fault signal, the first fault prompt information may be "the first high-pressure side fan, the first low-pressure side fan and the third low-pressure side fan are faulty, please repair it in time". The first switch assembly A02, the second switch assembly B02, the third switch assembly C02, the fourth switch assembly D02, the fifth switch assembly E02 and the sixth switch assembly F02 may be air switches or other forms of circuit breakers.
[0031] The above technical scheme, by receiving at least one of the first fault signal, the second fault signal, the third fault signal, the fourth fault signal, the fifth fault signal or the sixth fault signal, outputs the first fault prompt information according to the received fault signal, can accurately locate the source of the fault, facilitate subsequent maintenance, and thus effectively improve the reliability and maintainability of the system.
[0032] Optionally, Figure 2 For example, the first controller 106 includes a seventh normally open contact NO1, The first controller 106 is further configured to close the seventh normally open contact NO1 and send a seventh fault signal to the second controller 107 when the first controller 106 fails; The second controller 107 is configured to output second fault prompt information upon receiving the seventh fault signal.
[0033] The second fault prompt information is used to indicate a fault in the first controller 106 , and the second fault prompt information may be “the first controller 106 is faulty, please repair it in time”.
[0034] The above technical solution can promptly remind the user of the failure of the first controller by outputting the second fault prompt information according to the received fault signal, so that the temperature control system can be repaired in time, thereby effectively improving the reliability and safety of the temperature control system.
[0035] Optionally, Figure 2For example, the first controller 106 includes an eighth normally open contact NO2, The first controller 106 is further configured to close the eighth normally open contact NO2 and send an alarm signal to the second controller 107 when the first temperature is greater than or equal to a second preset temperature threshold; The second controller 107 is used to output over-temperature alarm information when receiving the alarm signal.
[0036] The second preset temperature threshold may be 120 degrees or other preset temperature thresholds, which are not specifically limited in the present disclosure. The over-temperature alarm information is used to indicate that the transformer winding temperature is greater than or equal to the second preset temperature threshold, and the over-temperature alarm information may be "The transformer winding temperature is greater than or equal to the second preset temperature threshold, please repair it in time".
[0037] The above technical scheme, by outputting over-temperature alarm information according to the received alarm signal, can promptly remind the user that the temperature of the transformer winding is greater than or equal to the second preset temperature threshold, so that the transformer can be checked and repaired in time, thereby effectively improving the reliability and safety of the temperature control system.
[0038] Optionally, the cooling device 108 is a sliding rail pull-out cooling fan.
[0039] Among them, a stainless steel slide rail with a limit locking mechanism is arranged on the transformer body, the slide rail is fixed to the transformer core base by bolt connection, the slide rail pull-out cooling fan is arranged on the slide rail, and the mechanical strength of the limit locking mechanism of the slide rail must be greater than or equal to the preset strength threshold to ensure that there is no jamming between the components.
[0040] The above technical solution, by adopting a slide rail pull-out cooling fan, can avoid the problem of being unable to perform online maintenance due to insufficient safety distance of live equipment, thereby effectively improving the maintainability of the excitation transformer temperature measurement and control system.
[0041] Figure 3 is a schematic diagram of another temperature control system according to an exemplary embodiment of the present disclosure, such as Figure 3 As shown, the temperature control system further includes an alarm component 1011, and the alarm component 1011 is connected to the first controller 106. The first controller 106 is used to control the alarm component 1011 to start a first alarm function when the first temperature is greater than a second preset temperature threshold.
[0042] The alarm component 1011 may be a buzzer, an indicator light or an instrument display panel, or other forms of alarm devices. The first alarm function may be to alarm through the alarm component 1011 to prompt the user that the temperature of the transformer 1010 winding is greater than a second preset temperature threshold.
[0043] For example, when the alarm component 1011 is a buzzer, when the first temperature is greater than the second preset temperature threshold, the buzzer emits a buzzing sound to give an alarm. When the alarm component 1011 is a player, when the first temperature is greater than the second preset temperature threshold, the alarm is given by playing a pre-recorded voice prompt, such as "The transformer winding temperature is greater than the second preset temperature threshold, please check". When the alarm component 1011 is an LED (Light Emitting Diode) indicator, when the first temperature is greater than the second preset temperature threshold, the alarm is given by lighting up the LED indicator.
[0044] In the above technical solution, when the first temperature is greater than the second preset temperature threshold, the alarm component is activated. When the temperature of the transformer winding is greater than the second preset temperature threshold, the alarm component can be used to promptly sound an alarm, thereby avoiding safety accidents caused by overheating of the transformer winding, thereby effectively improving the reliability and safety of the temperature control system, and further effectively improving the user experience.
[0045] Optionally, Figure 3 For example, the alarm component 1011 is connected to the second controller 107, The second controller 107 is used to control the alarm component 1011 to start the second alarm function when the first temperature acquisition component 104 and / or the first controller 106 fails.
[0046] Among them, the alarm component 1011 can be a buzzer, an indicator light or an instrument display panel, or it can be other forms of alarm equipment. The second alarm function can be to alarm through the alarm component 1011 to prompt the user that the first temperature collection component 104 and / or the first controller 106 is faulty.
[0047] For example, when the alarm component 1011 is a buzzer, in the case of a failure of the first temperature acquisition component 104 and / or the first controller 106, the buzzer emits a buzzing sound to give an alarm. When the alarm component 1011 is a player, in the case of a failure of the first temperature acquisition component 104 and / or the first controller 106, an alarm is given by playing a pre-recorded voice prompt, such as "the first temperature acquisition component 104 and / or the first controller 106 is faulty, please check". When the alarm component 1011 is an LED indicator light, in the case of a failure of the first temperature acquisition component 104 and / or the first controller 106, an alarm is given by lighting up the LED indicator light.
[0048] The above technical scheme activates the alarm component in the event of a failure of the first temperature acquisition component and / or the first controller. In the event of a failure of the first temperature acquisition component and / or the first controller, the alarm component can be used to promptly sound an alarm, thereby avoiding safety accidents caused by the failure of the first temperature acquisition component and / or the first controller. This can effectively improve the reliability and safety of the temperature control system, and further effectively improve the user experience.
[0049] In another exemplary embodiment of the present disclosure, a transformer is shown. The vehicle includes the above Figure 1-Figure 3 Any temperature control system described above.
[0050] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0052] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. A temperature control system, characterized in that: Applied to a transformer, the temperature control system includes a power module, a first power switch, a second power switch, a target switch, a first temperature acquisition component, a second temperature acquisition component, a first controller, a second controller and a cooling device. The power module is connected to a power supply end of the first controller and a power supply end of the cooling device through the first power switch. One end of the target switch is connected to a control end of the first controller, and the other end of the target switch is connected to a control end of the cooling device. The power module is also connected to the cooling device through the second power switch. The first temperature acquisition component and the second temperature acquisition component are respectively arranged on the insulating layer of the transformer winding for collecting the temperature of the transformer winding. The cooling device is arranged on the transformer winding for cooling the transformer winding. The first controller is connected to the first temperature acquisition component, and is used to close the first power switch and the target switch to start the cooling device when the first temperature acquired by the first temperature acquisition component is greater than or equal to a first preset temperature threshold; The second controller is connected to the first controller and the second temperature acquisition component, and is used to disconnect the first power switch, close the second power switch, and start the cooling device if it is determined that the second temperature collected by the second temperature acquisition component is greater than or equal to the first preset temperature threshold when the first temperature acquisition component and / or the first controller fails.
2. The temperature control system according to claim 1, characterized in that: The transformer comprises a multi-phase winding, the cooling device comprises a high-voltage side fan and a low-voltage side fan, the high-voltage side fan is arranged on the high-voltage side of each phase winding for cooling the high-voltage side winding, the low-voltage side fan is arranged on the low-voltage side of each phase winding for cooling the low-voltage side winding, The first controller is connected to the high-pressure side fan and the low-pressure side fan of each phase winding respectively, and is used to start the high-pressure side fan of each phase winding and the low-pressure side fan of each phase winding when the first temperature is greater than or equal to the preset temperature threshold; The second controller is used to start the high-pressure side fan of each phase winding and the low-pressure side fan of each phase winding if it is determined that the second temperature is greater than or equal to the preset temperature threshold when the first temperature acquisition component and / or the first controller fails.
3. The temperature control system according to claim 2, characterized in that: The cooling device includes a first high-pressure side fan and a first switch assembly, the first switch assembly includes a first main contact, a first low-pressure side fan and a second switch assembly, the second switch assembly includes a second main contact, a second high-pressure side fan and a third switch assembly, the third switch assembly includes a third main contact, a second low-pressure side fan and a fourth switch assembly, the fourth switch assembly includes a fourth main contact, a third high-pressure side fan and a fifth switch assembly, the fifth switch assembly includes a fifth main contact, a third low-pressure side fan and a sixth switch assembly, the sixth switch assembly includes a sixth main contact, the first controller is connected in parallel with the first switch assembly, the second switch assembly, the third switch assembly, the fourth switch assembly, the fifth switch assembly and the sixth switch assembly, The first controller is used to control the first main contact to be disconnected when the first high-pressure side fan fails; to control the second main contact to be disconnected when the first low-pressure side fan fails; to control the third main contact to be disconnected when the second high-pressure side fan fails; to control the fourth main contact to be disconnected when the second low-pressure side fan fails; to control the fifth main contact to be disconnected when the third high-pressure side fan fails; and to control the sixth main contact to be disconnected when the third low-pressure side fan fails.
4. The temperature control system according to claim 3, characterized in that: The first switch assembly further includes a first normally open auxiliary contact, the second switch assembly further includes a second normally open auxiliary contact, the third switch assembly further includes a third normally open auxiliary contact, the fourth switch assembly further includes a fourth normally open auxiliary contact, the fifth switch assembly further includes a fifth normally open auxiliary contact, and the sixth switch assembly further includes a sixth normally open auxiliary contact. The first controller is configured to send a first fault signal to the second controller when the first main contact is disconnected and the first normally open auxiliary contact is closed, send a second fault signal to the second controller when the second main contact is disconnected and the second normally open auxiliary contact is closed, send a third fault signal to the second controller when the third main contact is disconnected and the third normally open auxiliary contact is closed, send a fourth fault signal to the second controller when the fourth main contact is disconnected and the fourth normally open auxiliary contact is closed, send a fifth fault signal to the second controller when the fifth main contact is disconnected and the fifth normally open auxiliary contact is closed, and send a sixth fault signal to the second controller when the sixth main contact is disconnected and the sixth normally open auxiliary contact is closed; The second controller is used to output first fault prompt information when receiving at least one of the first fault signal, the second fault signal, the third fault signal, the fourth fault signal, the fifth fault signal and the sixth fault signal.
5. The temperature control system according to claim 1, characterized in that: The first controller comprises a seventh normally open contact, The first controller is further configured to close the seventh normally open contact and send a seventh fault signal to the second controller in the event of a fault in the first controller; The second controller is used to output second fault prompt information when receiving the seventh fault signal.
6. The temperature control system according to claim 1, characterized in that: The first controller comprises an eighth normally open contact, The first controller is further configured to close the eighth normally open contact and send an alarm signal to the second controller when the first temperature is greater than or equal to the preset temperature threshold; The second controller is used to output over-temperature alarm information when receiving the alarm signal.
7. The temperature control system according to claim 1, characterized in that: The cooling device is a slide rail pull-out cooling fan.
8. The temperature control system according to claim 1, characterized in that: The temperature control system further comprises an alarm component, wherein the alarm component is connected to the first controller. The first controller is used to control the alarm component to start a first alarm function when the first temperature is greater than a second preset temperature threshold.
9. The temperature control system according to claim 8, characterized in that: The alarm component is connected to the second controller, The second controller is used to control the alarm component to start the second alarm function when the first temperature acquisition component and / or the first controller fails.
10. A transformer, characterized in that: The transformer comprises a temperature control system as claimed in any one of claims 1 to 9.