Transformer cooler control device and system
By combining a temperature controller and multiple disconnect switches, independent fan control and fault alarms for the dry-type transformer cooler are achieved, solving the problems of single power supply and lack of independent control, and improving the safety and service life of the transformer.
Patent Information
- Application Number
- CN202422814636.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-18
AI Technical Summary
The existing control methods for the coolers of dry-type transformers are simple and crude, which cannot effectively ensure the safe and stable operation of the transformers. They also suffer from problems such as single power supply, lack of independent fan control, and insufficient fault alarms.
The system employs a combination of temperature controller, multiple three-phase disconnect switches, and cooler disconnect switches to achieve independent control of the fans in each phase of the transformer. It is equipped with fault alarm and over-temperature trip functions, and a leakage protection switch ensures stable power supply.
Individual control of multiple cooling fans has been achieved, which improves the regulation of transformer ambient temperature, reduces high-temperature failures, extends equipment life, and ensures power supply stability.
Smart Images
Figure CN223471273U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of transformer temperature control, in particular, to a transformer cooler control device and system. BACKGROUND
[0002] At present, the dry-type transformer with epoxy resin casting is widely used, and the cooler control mode of this kind of transformer is generally to put all the 6 fans at the bottom of the transformer into operation or exit the operation through a total contactor switch. Such transformer temperature control mode is simple and rough, and the temperature control effect is poor, which cannot effectively ensure the safe and stable operation of the transformer. CONTENT OF THE UTILITY MODEL
[0003] To solve the above problems, the present disclosure provides a transformer cooler control device and system.
[0004] According to a first aspect of the embodiments of the present disclosure, a transformer cooler control device is provided, which comprises a temperature controller, a first three-phase knife switch, a second three-phase knife switch, a first cooler knife switch, a second cooler knife switch, a third cooler knife switch, a fourth cooler knife switch, a fifth cooler knife switch and a sixth cooler knife switch.
[0005] The temperature controller is connected with a three-phase power supply through the first three-phase knife switch and connected with a cooler power supply bus through the second three-phase knife switch.
[0006] The first cooler knife switch, the second cooler knife switch, the third cooler knife switch, the fourth cooler knife switch, the fifth cooler knife switch and the sixth cooler knife switch are respectively connected in parallel to the cooler power supply bus, and are respectively used for controlling the opening and closing of a transformer A-phase high-voltage side fan, a transformer A-phase low-voltage side fan, a transformer B-phase high-voltage side fan, a transformer B-phase low-voltage side fan, a transformer C-phase high-voltage side fan and a transformer C-phase low-voltage side fan.
[0007] Optionally, the temperature controller comprises a transformer three-phase temperature sensor input interface.
[0008] The transformer three-phase temperature sensor input interface is used for connecting a temperature sensor arranged at the three phases of the transformer, and is used for receiving the three-phase temperature of the transformer returned by the temperature sensor.
[0009] Optionally, the temperature controller comprises a transformer temperature output interface.
[0010] The transformer temperature output interface is used for connecting a host computer, and is used for sending the temperature of the transformer to the host computer.
[0011] Optionally, the cooler knife switch comprises an auxiliary contact, and the temperature controller comprises a fault output interface.
[0012] The auxiliary contact of the cooler knife switch is connected to the fault output interface, and the fault output interface is used to determine whether the cooling fan is tripped.
[0013] Optionally, the temperature controller comprises an over-temperature alarm interface.
[0014] The over-temperature alarm interface is used to connect a host computer, and is used to send an alarm to the host computer when the temperature of the transformer exceeds a preset threshold.
[0015] Optionally, the temperature controller comprises an over-temperature tripping interface.
[0016] The over-temperature tripping interface is used to connect a superior power protection control cabinet, and is used to send a tripping instruction to the superior power protection control cabinet when the temperature of the transformer exceeds a preset threshold.
[0017] Optionally, the device further comprises a third three-phase knife switch.
[0018] One end of the third three-phase knife switch is connected to the three-phase power supply, and the other end is connected to the cooler power supply bus, and is used to supply power to the cooling fan in the case of failure of the temperature controller.
[0019] Optionally, the first three-phase knife switch and the second three-phase knife switch are leakage protection switches.
[0020] Optionally, the first cooler knife switch, the second cooler knife switch, the third cooler knife switch, the fourth cooler knife switch, the fifth cooler knife switch and the sixth cooler knife switch are leakage protection switches.
[0021] According to a second aspect of the embodiments of the present disclosure, a transformer cooler control system is provided, comprising a transformer cooler control device, and a transformer cooling fan, a host computer and a superior power protection control cabinet connected to the transformer cooler control device respectively.
[0022] In summary, the embodiment of the present disclosure provides a transformer cooler control device, which comprises a temperature controller, a first three-phase knife switch, a second three-phase knife switch, a first cooler knife switch, a second cooler knife switch, a third cooler knife switch, a fourth cooler knife switch, a fifth cooler knife switch and a sixth cooler knife switch. The temperature controller is connected with a three-phase power supply through the first three-phase knife switch and is connected with a cooler power supply bus through the second three-phase knife switch. The first cooler knife switch, the second cooler knife switch, the third cooler knife switch, the fourth cooler knife switch, the fifth cooler knife switch and the sixth cooler knife switch are connected in parallel with the cooler power supply bus respectively and are used for controlling the opening and closing of a transformer A-phase high-voltage side fan, a transformer A-phase low-voltage side fan, a transformer B-phase high-voltage side fan, a transformer B-phase low-voltage side fan, a transformer C-phase high-voltage side fan and a transformer C-phase low-voltage side fan respectively. The embodiment of the present disclosure can realize the separate control of the working states of multiple cooling fans, thereby improving the control effect of the transformer ambient temperature, reducing the probability of transformer high-temperature failure and improving the service life of the equipment.
[0023] Other features and advantages of the present disclosure will be described in detail in the following detailed description section. BRIEF DESCRIPTION OF DRAWINGS
[0024] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, which together with the detailed description, serve to explain the present disclosure. In the drawings:
[0025] Figure 1 FIG. 1 is a circuit schematic diagram of a transformer cooler control device according to an exemplary embodiment.
[0026] Figure 2 FIG. 2 is a schematic diagram of the appearance of a transformer cooler control device according to an exemplary embodiment.
[0027] Figure 3 FIG. 3 is a block diagram of an electronic device according to an exemplary embodiment.
[0028] Figure 4 FIG. 4 is a block diagram of a transformer cooler control system according to an exemplary embodiment. DETAILED DESCRIPTION
[0029] The detailed description of the present disclosure is described below in conjunction with the accompanying drawings. It should be understood that the detailed description described herein is only used to explain and illustrate the present disclosure, and is not used to limit the present disclosure.
[0030] It should be understood that the term "including" and its variations as used herein are open-ended, i.e., "including but not limited to." The term "based on" means "based, at least in part, on." The term "one embodiment" means "at least one embodiment," the term "another embodiment" means "at least one additional embodiment," and the term "some embodiments" means "at least some embodiments." The relevant definitions of other terms are provided in the following description.
[0031] It should be noted that the concepts of "first", "second", etc. mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units. The modifications of "one" and "multiple" mentioned in this disclosure are illustrative and not restrictive. Those skilled in the art should understand that, unless otherwise clearly indicated in the context, they should be understood as "one or more". In the description of this disclosure, unless otherwise specified, "multiple" refers to two or more than two, and other quantifiers are similar thereto; "at least one item(s)", "one item(s) or multiple items(s)" or similar expressions refer to any combination of these items(s), including any combination of single items(s) or plural items(s).
[0032] Although operations or steps are described in a particular order in the drawings in the embodiments of the present disclosure, this should not be understood as requiring that these operations or steps be performed in the particular order shown or in a serial order, or that all of the operations or steps shown be performed to obtain a desired result. In the embodiments of the present disclosure, these operations or steps may be performed serially; these operations or steps may also be performed in parallel; or some of these operations or steps may be performed.
[0033] The names of the messages or information exchanged between the multiple devices in the embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of these messages or information. It is understood that before using the technical solutions disclosed in the embodiments of the present disclosure, the type, scope of use, and usage scenarios of the personal information involved in the present disclosure should be informed to the user in an appropriate manner in accordance with relevant laws and regulations and the user's authorization should be obtained. It should be noted that the thermostat in the present disclosure can be obtained through commercial channels.
[0034] First, the application scenarios of the present disclosure are described. The applicant has found that the existing transformer cooler control device and system have the following drawbacks:
[0035] 1. The transformer cooler has a single power supply circuit. If the thermostat or power switch contactor fails, the entire transformer cooler will lose power supply and cannot work.
[0036] 2. The 6 cooling fans of the transformer bottom are connected in parallel, each cooling fan has no independent control switch, and any cooling fan failure requires all cooling fans to be powered off for maintenance, which cannot be powered off for maintenance without affecting the operation of other cooling fans.
[0037] 3. The transformer cooler control device has no cooling fan failure trip alarm function, which cannot timely find the cooling fan failure.
[0038] Therefore, the transformer cooler control device and system are provided to solve the above problems. The present disclosure will be described below in conjunction with specific embodiments.
[0039] Figure 1 is a circuit schematic diagram of a transformer cooler control device according to an exemplary embodiment. As shown in Figure 1 The present disclosure provides a transformer cooler control device, which can include a temperature controller WKQ, a first three-phase knife switch 1QF0, a second three-phase knife switch 1QF1, a first cooler knife switch QFA, a second cooler knife switch QFB, a third cooler knife switch QFC, a fourth cooler knife switch QFD, a fifth cooler knife switch QFE, and a sixth cooler knife switch QFF. For example, the model of the temperature controller WKQ can be SDKH-306RD intelligent temperature controller.
[0040] The temperature controller WKQ connects the ABC three-phase of the three-phase power supply through the first three-phase knife switch 1QF0 and connects the cooler power supply bus through the second three-phase knife switch 1QF1. The power supply inlet interface of the temperature controller includes No. 1, 2, 3, and 4 ports, wherein the No. 1 port is a zero line port, and the No. 2, 3, and 4 ports are power supply live line interfaces. The power supply outlet interface of the temperature controller includes No. 5, 6, and 7 ports, wherein the No. 5, 6, and 7 ports are power supply live line interfaces.
[0041] The first cooler knife switch QFA, the second cooler knife switch QFB, the third cooler knife switch QFC, the fourth cooler knife switch QFD, the fifth cooler knife switch QFE, and the sixth cooler knife switch QFF are connected in parallel to the cooler power supply bus, respectively, for controlling the opening and closing of the transformer A-phase high-voltage side fan, the transformer A-phase low-voltage side fan, the transformer B-phase high-voltage side fan, the transformer B-phase low-voltage side fan, the transformer C-phase high-voltage side fan, and the transformer C-phase low-voltage side fan. In this way, the individual control of multiple transformer cooling fans can be achieved, and better transformer environmental temperature regulation effect can be achieved.
[0042] In summary, the embodiment of the present disclosure provides a transformer cooler control device, which comprises a temperature controller, a first three-phase knife switch, a second three-phase knife switch, a first cooler knife switch, a second cooler knife switch, a third cooler knife switch, a fourth cooler knife switch, a fifth cooler knife switch and a sixth cooler knife switch. The temperature controller is connected to a three-phase power supply through the first three-phase knife switch and is connected to a cooler power supply bus through the second three-phase knife switch. The first cooler knife switch, the second cooler knife switch, the third cooler knife switch, the fourth cooler knife switch, the fifth cooler knife switch and the sixth cooler knife switch are respectively connected to the cooler power supply bus and are respectively used for controlling the opening and closing of a transformer A-phase high-voltage side fan, a transformer A-phase low-voltage side fan, a transformer B-phase high-voltage side fan, a transformer B-phase low-voltage side fan, a transformer C-phase high-voltage side fan and a transformer C-phase low-voltage side fan. The embodiment of the present disclosure can realize the separate control of the working states of multiple cooling fans, thereby improving the control effect of the transformer ambient temperature, reducing the probability of transformer high-temperature failure and improving the service life of the equipment.
[0043] In some embodiments, the temperature controller WKQ can comprise a transformer three-phase temperature sensor input interface. The transformer three-phase temperature sensor input interface comprises the 8th, 9th and 10th ports.
[0044] The transformer three-phase temperature sensor input interface is used for connecting a temperature sensor arranged at the three phases of the transformer and receiving the three-phase temperature of the transformer returned by the temperature sensor.
[0045] In some embodiments, the temperature controller WKQ can comprise a transformer temperature output interface. The transformer temperature output interface comprises the 11th, 12th and 13th ports.
[0046] The transformer temperature output interface is used for connecting a host computer and sending the temperature of the transformer to the host computer.
[0047] In some embodiments, the cooler knife switch comprises an auxiliary contact (not shown in the figure), and the temperature controller WKQ comprises a fault output interface. The fault output interface comprises the 14th and 15th ports.
[0048] The auxiliary contact of the cooler knife switch is connected to the fault output interface, and the fault output interface is used for determining whether the cooling fan is tripped. If the cooling fan is tripped, the auxiliary contact of the cooling fan will also be disconnected, and then the fault output interface will become open, so that whether the cooling fan is tripped can be detected.
[0049] In some embodiments, the temperature controller WKQ can further comprise an over-temperature alarm interface. The over-temperature alarm interface comprises the 16th and 17th ports.
[0050] The over-temperature alarm interface is used to connect the upper computer (not shown in the figure) and send an alarm to the upper computer when the temperature of the transformer exceeds the preset threshold. For example, the preset threshold can be set to 100 degrees. When the temperature of the transformer is detected to exceed 100 degrees, the temperature controller WKQ can send an alarm to the upper computer to remotely remind the operation and maintenance personnel to pay attention to the excessive temperature of the transformer, so as to further take manual intervention measures to prevent the performance of the transformer from being reduced or damaged due to high temperature.
[0051] In some embodiments, the temperature controller WKQ can further include an over-temperature trip interface. The over-temperature trip interface includes the 18th and 19th ports.
[0052] The over-temperature trip interface is used to connect the upper power protection control cabinet (not shown in the figure) and send a trip instruction to the upper power protection control cabinet when the temperature of the transformer exceeds the preset threshold. For example, the preset threshold can be set to 100 degrees. When the temperature of the transformer is detected to exceed 100 degrees, the temperature controller WKQ can send a trip instruction to the upper power protection control cabinet to remotely disconnect the upper power supply, so as to prevent the performance of the transformer from being reduced or damaged due to high temperature.
[0053] In some embodiments, the transformer cooler control device can further include a third three-phase knife switch 2QF0. One end of the third three-phase knife switch 2QF0 is connected to the three-phase power supply, and the other end is connected to the cooler power supply bus, which is used to supply power to the transformer cooling fan in the case of failure of the temperature controller WKQ. In this way, the problem of single power supply of the transformer cooling fan can be solved, and it is ensured that the transformer cooling fan can still be powered by the third three-phase knife switch 2QF0 in the case of failure of the temperature controller WKQ, thereby improving the working stability and reliability of the transformer cooling fan.
[0054] In some embodiments, the first three-phase knife switch 1QF0 and the second three-phase knife switch 1QF1 can be leakage protection switches. The rated current can be 12A. Of course, according to the type and number of transformer cooling fans actually used, the rated current can also be other values, which are not limited in the present disclosure. However, it must be ensured that the rated current of each of them is greater than the total rated current of the transformer cooling fans.
[0055] In some embodiments, the third three-phase knife switch 2QF0 can be a leakage protection switch. The rated current can be 12A. Of course, according to the type and number of transformer cooling fans actually used, the rated current can also be other values, which are not limited in the present disclosure. However, it must be ensured that the rated current is greater than the total rated current of the transformer cooling fans.
[0056] In some embodiments, the first cooler knife switch QFA, the second cooler knife switch QFB, the third cooler knife switch QFC, the fourth cooler knife switch QFD, the fifth cooler knife switch QFE and the sixth cooler knife switch QFF can be leakage protection switches. The rated current can be 2A. Of course, according to the type of transformer cooling fan actually used, the rated current can also be other values, and the present disclosure does not limit this.
[0057] Figure 2 is a schematic diagram of an appearance of a transformer cooler control device according to an exemplary embodiment. As shown in Figure 2 , wherein 1 is a dry-type transformer temperature control box, 1-1 is a temperature control box cable hole, 1-2 is a temperature control box door lock, and 2 is a temperature controller.
[0058] Figure 3 is a block diagram of an electronic device according to an exemplary embodiment. As shown in Figure 3 , the present disclosure provides an electronic device 300. The electronic device 300 can be a transformer cooler control device, and the electronic device 300 can include a processor 301 and a memory 302. The electronic device 300 can further include one or more of a multimedia component 303, an input / output (I / O) interface 304, and a communication component 305.
[0059] The processor 301 is configured to control overall operations of the electronic device 300, and the memory 302 is configured to store various types of data to support operations of the electronic device 300, which can include, for example, instructions of any application or method operating on the electronic device 300, and application-related data such as contact data, transmitted / received messages, pictures, audio, video, and the like. The memory 302 can be implemented by any type of volatile or nonvolatile memory device or a combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), a magnetic memory, a flash memory, a magnetic disk, or an optical disk. The multimedia component 303 can include a screen and an audio component. The screen can be, for example, a touch screen, and the audio component is configured to output and / or input audio signals. For example, the audio component can include a microphone configured to receive external audio signals. The received audio signals can be further stored in the memory 302 or transmitted through the communication component 305. The audio component further includes at least one speaker configured to output audio signals. The I / O interface 304 provides an interface between the processor 301 and other interface modules, which can be a keyboard, a mouse, a button, and the like. The buttons can be virtual buttons or physical buttons. The communication component 305 is configured to perform wired or wireless communication between the electronic device 300 and other devices. The wireless communication, such as Wi-Fi, Bluetooth, near field communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, and the like, or a combination of one or more of them, is not limited herein. Accordingly, the communication component 305 can include a Wi-Fi module, a Bluetooth module, an NFC module, and the like.
[0060] In an exemplary embodiment, the electronic device 300 can be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic elements.
[0061] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, for example, the computer-readable storage medium can be the above-mentioned memory 302 including program instructions, and the above-mentioned program instructions can be executed by the processor 301 of the electronic device 300.
[0062] Figure 4 is a block diagram of a transformer cooler control system according to an exemplary embodiment. As shown in Figure 4 The transformer cooler control system can include a transformer cooler control device, and a transformer cooling fan, an upper computer, and a superior power supply protection control cabinet connected to the transformer cooler control device, respectively.
[0063] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
[0064] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0065] In addition, any combination of various different embodiments of the present disclosure can also be made, as long as it does not deviate from the idea of the present disclosure, it should also be considered as disclosed by the present disclosure.
Claims
1. A transformer cooler control device, characterized by, The device comprises a temperature controller, a first three-phase knife switch, a second three-phase knife switch, a first cooler knife switch, a second cooler knife switch, a third cooler knife switch, a fourth cooler knife switch, a fifth cooler knife switch and a sixth cooler knife switch. The temperature controller is connected to a three-phase power supply through the first three-phase knife switch and to a cooler power supply bus through the second three-phase knife switch. The first cooler knife switch, the second cooler knife switch, the third cooler knife switch, the fourth cooler knife switch, the fifth cooler knife switch and the sixth cooler knife switch are respectively connected to the cooler power supply bus and are respectively used to control the opening and closing of a transformer A-phase high-voltage side fan, a transformer A-phase low-voltage side fan, a transformer B-phase high-voltage side fan, a transformer B-phase low-voltage side fan, a transformer C-phase high-voltage side fan and a transformer C-phase low-voltage side fan.
2. The transformer cooler control device of claim 1, wherein The temperature controller comprises a transformer three-phase temperature sensor input interface. The transformer three-phase temperature sensor input interface is used to connect a temperature sensor arranged on a transformer three-phase and to receive a transformer three-phase temperature returned by the temperature sensor.
3. The transformer cooler control device of claim 1, wherein The temperature controller comprises a transformer temperature output interface. The transformer temperature output interface is used to connect a host computer and to send a temperature of the transformer to the host computer.
4. The transformer cooler control device of claim 1, wherein The cooler knife switch comprises an auxiliary contact, and the temperature controller comprises a fault output interface. The auxiliary contact of the cooler knife switch is connected to the fault output interface, and the fault output interface is used to determine whether a cooling fan is tripped.
5. The transformer cooler control device of claim 1, wherein The temperature controller comprises an over-temperature alarm interface. The over-temperature alarm interface is used to connect a host computer and to send an alarm to the host computer when a temperature of the transformer exceeds a preset threshold.
6. The transformer cooler control device of claim 1, wherein The temperature controller comprises an over-temperature tripping interface. The over-temperature tripping interface is used to connect a superior power protection control cabinet and to send a tripping instruction to the superior power protection control cabinet when the temperature of the transformer exceeds the preset threshold.
7. The transformer cooler control device of claim 1, wherein The device further comprises a third three-phase knife switch. One end of the third three-phase knife switch is connected to the three-phase power supply, and the other end is connected to the cooler power supply bus, and the third three-phase knife switch is used to supply power to the cooling fan in the case of a failure of the temperature controller.
8. The transformer cooler control device of any one of claims 1-7, wherein, The first three-phase knife switch and the second three-phase knife switch are leakage protection switches.
9. The transformer cooler control device according to any one of claims 1 to 7, characterized in that: The first cooler knife switch, the second cooler knife switch, the third cooler knife switch, the fourth cooler knife switch, the fifth cooler knife switch and the sixth cooler knife switch are leakage protection switches.
10. A transformer cooler control system characterized by, The device comprises a temperature controller, a first three-phase knife switch, a second three-phase knife switch, a first cooler knife switch, a second cooler knife switch, a third cooler knife switch, a fourth cooler knife switch, a fifth cooler knife switch and a sixth cooler knife switch. The device comprises a temperature controller, a first three-phase knife switch, a second three-phase knife switch, a first cooler knife switch, a second cooler knife switch, a third cooler knife switch, a fourth cooler knife switch, a fifth cooler knife switch and a sixth cooler knife switch. The device comprises a temperature controller, a first three-phase knife switch, a second three-phase knife switch, a first cooler knife switch, a second cooler knife switch, a third cooler knife switch, a fourth cooler knife switch, a fifth cooler knife switch and a sixth cooler knife switch.