Intelligent dry-type energy-saving transformer

Abstract

The utility model relates to dry -type transformer technical field, concretely relates to a kind of intelligent dry -type energy -saving transformer, including shell, dry -type transformer and monitoring component, dry -type transformer is arranged in shell inside, monitoring component includes current transformer, fluorescent optical fiber temperature measurement sensor, smoke sensor, temperature and humidity sensor and intelligent terminal;Current transformer is installed on the low voltage outgoing line copper bar of dry -type transformer;Fluorescent optical fiber temperature measurement sensor is used for the temperature measurement of high voltage winding;Smoke sensor monitors smoke concentration in environment, temperature and humidity sensor monitors temperature and humidity in environment;Intelligent terminal gathers each item signal and the monitoring data of current transformer, fluorescent optical fiber temperature measurement sensor, smoke sensor, temperature and humidity sensor, the utility model can perceive the parameter of dry -type transformer operating environment, improve the accuracy of fault early warning.

Description

Technical Field

[0001] This utility model relates to the field of dry-type transformer technology, and in particular to an intelligent dry-type energy-saving transformer. Background Technology

[0002] A dry-type transformer is a power transformer that uses air as a cooling medium and does not require insulating oil. Its core structure consists of an iron core, high and low voltage windings, and insulating materials. It achieves voltage transformation through the principle of electromagnetic induction. Compared with oil-immersed transformers, dry-type transformers have advantages such as fire and explosion protection, maintenance-free operation, and low noise, making them one of the important electrical devices in modern power distribution systems.

[0003] Currently, in order to ensure the safe, reliable, and efficient operation of dry-type transformers, while reducing maintenance costs and failure risks, it is necessary to monitor the key parameters of dry-type transformers. Existing dry-type transformer monitoring systems are mostly limited to the acquisition of electrical parameters, such as voltage and current, and lack the ability to perceive parameters of the operating environment of dry-type transformers, such as temperature, humidity, and smoke, resulting in insufficient accuracy of fault early warning. Utility Model Content

[0004] The purpose of this invention is to provide an intelligent dry-type energy-saving transformer that can sense the parameters of the operating environment of the dry-type transformer and improve the accuracy of fault early warning.

[0005] To achieve the above objectives, this utility model provides an intelligent dry-type energy-saving transformer, including a shell, a dry-type transformer, and a monitoring component. The dry-type transformer is disposed inside the shell, and the monitoring component includes a current transformer, a fluorescent fiber optic temperature sensor, a smoke sensor, a temperature and humidity sensor, and an intelligent terminal.

[0006] The current transformer is installed on the low-voltage outgoing copper busbar of the dry-type transformer; there are multiple fluorescent fiber optic temperature sensors, one each on the high-voltage winding, low-voltage winding, and core of the dry-type transformer; the smoke sensor is fixedly connected to the housing and located at the top inside the housing; the temperature and humidity sensor is fixedly connected to the housing and located inside the housing; the smart terminal is fixedly connected inside the housing and is electrically connected to the current transformer, the fluorescent fiber optic temperature sensor, the smoke sensor, and the temperature and humidity sensor.

[0007] The monitoring component further includes a UHF (ultra-high frequency) partial discharge sensor; the UHF partial discharge sensor is fixedly connected to the housing and electrically connected to the smart terminal, and is located on the top inner side of the housing.

[0008] The monitoring component also includes a vibration sensor; the vibration sensor is mounted on the dry-type transformer and is electrically connected to the smart terminal.

[0009] The dry-type transformer has heaters installed at the bottom of its high and low voltage sides, and the heaters are electrically connected to the smart terminal.

[0010] The dry-type transformer is equipped with cooling fans at the bottom of its high and low voltage sides, and the cooling fans are electrically connected to the smart terminal.

[0011] This utility model discloses an intelligent dry-type energy-saving transformer. The current transformer is installed on the low-voltage outgoing copper busbar of the dry-type transformer. Each fluorescent fiber optic temperature sensor is configured with 9 channels. The dry-type transformer has 6 windings (high and low voltage), with one channel installed on each winding and one channel installed on the core, with 2 channels reserved for backup. It possesses high insulation, high voltage resistance (up to 100kV), and electromagnetic interference resistance, and can be directly used for temperature measurement of the high-voltage windings. The smoke sensor is installed above the dry-type transformer, on the inner top of the outer casing. It uses a long-life, high-stability, and high-sensitivity precision photoelectric sensor, resists strong light interference, and emits audible and visual alarm signals when the smoke concentration in the environment reaches a certain level to warn people to escape the fire hazard. The intelligent terminal has a built-in 5G IoT card, an RS485 communication interface, and uses MODBUS. The intelligent terminal, utilizing the TCP / IP protocol, collects various signals and monitoring data from the current transformer, fluorescent fiber optic temperature sensor, smoke sensor, and temperature and humidity sensor. This allows for real-time monitoring of electrical parameters of the dry-type transformer, including winding temperature, current, voltage, operating time, annual energized time, load rate, annual maximum load, and annual maximum load utilization hours. All monitored temperature, humidity, and electrical parameters are displayed on the intelligent terminal's screen. Data can be stored in real-time and uploaded to a data center. Its monitoring and management functions leverage 5G IoT technology, enabling 24 / 7 comprehensive operation and maintenance monitoring and management via web pages, mobile apps, and WeChat official accounts. This achieves safe, economical, energy-saving, and intelligent transformer operation. This invention can sense parameters of the dry-type transformer's operating environment, improving the accuracy of fault early warning. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] 1-Shell, 2-Dry-type transformer, 3-Current transformer, 4-Fluorescent fiber optic temperature sensor, 5-Smoke sensor, 6-Temperature and humidity sensor, 7-Smart terminal, 8-UHF ultra-high frequency partial discharge sensor, 9-Vibration sensor, 10-Heater, 11-Cooling fan. Detailed Implementation

[0015] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0016] Please see Figure 1 , Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] This utility model provides an intelligent dry-type energy-saving transformer, including a shell 1, a dry-type transformer 2, a monitoring component, a heater 10, and a cooling fan 11. The monitoring component includes a current transformer 3, a fluorescent fiber optic temperature sensor 4, a smoke sensor 5, a temperature and humidity sensor 6, an intelligent terminal 7, a UHF ultra-high frequency partial discharge sensor 8, and a vibration sensor 9. The aforementioned solution can sense the parameters of the operating environment of the dry-type transformer 2, thereby improving the accuracy of fault early warning.

[0018] In this specific embodiment, the dry-type transformer 2 is disposed inside the housing 1; the current transformer 3 is disposed on the low-voltage output copper busbar of the dry-type transformer 2; there are multiple fluorescent fiber optic temperature sensors 4, one of which is disposed on the high-voltage winding, one on the low-voltage winding, and one on the core of the dry-type transformer 2; the smoke sensor 5 is fixedly connected to the housing 1 and is located on the top inner side of the housing 1; the temperature and humidity sensor 6 is fixedly connected to the housing 1 and is located inside the housing 1; the smart terminal 7 is fixedly connected inside the housing 1, and the smart terminal 7 is electrically connected to the current transformer 3, the fluorescent fiber optic temperature sensor 4, the smoke sensor 5, and the temperature and humidity sensor 6 respectively. The core of the dry-type transformer 2 is designed using Shougang's ultra-low loss, high magnetic induction silicon steel sheet 20SQGD070. The dry-type transformer 2 meets the Class I energy efficiency requirements in GB20052-2024 "Energy Efficiency Limits and Energy Efficiency Grades for Power Transformers". The current transformer 3 is installed on the low-voltage outgoing copper busbar of the dry-type transformer 2. Each fluorescent fiber optic temperature sensor 4 is configured with 9 channels. The dry-type transformer 2 has a total of 6 windings (high and low voltage), with one channel installed on each winding and one channel installed on the core, plus 2 channels reserved for backup. It possesses high... Its insulation, high voltage resistance (up to 100kV), and electromagnetic interference resistance characteristics allow it to be directly used for temperature measurement of high voltage windings. The smoke sensor 5 is installed above the dry-type transformer 2, on the inner top of the outer casing 1. It employs a long-life, high-stability, and high-sensitivity precision photoelectric sensor, resists strong light interference, and emits audible and visual alarm signals when the smoke concentration in the environment reaches a certain level, alerting people to escape the fire hazard. The smart terminal 7 has a built-in 5G IoT card, an RS485 communication interface, and uses MODBUS. The intelligent terminal 7, using the TCP / IP protocol, collects various signals and monitoring data from the current transformer 3, the fluorescent fiber optic temperature sensor 4, the smoke sensor 5, and the temperature and humidity sensor 6. This allows for real-time monitoring of the winding temperature, current, and various monitored temperature and humidity parameters of the dry-type transformer 2. The terminal's built-in program calculates electrical parameters such as voltage, operating time of the dry-type transformer 2, annual energized time, load rate, annual maximum load, and annual maximum load utilization hours. All of these parameters can be viewed on the display screen of the intelligent terminal 7. The data can be stored in real-time and uploaded to a data center. Utilizing 5G IoT technology, its monitoring and management functions provide 24 / 7 comprehensive operation and maintenance monitoring and management via web pages, mobile apps, and WeChat official accounts, achieving safe, economical, energy-saving, and intelligent transformer operation. This invention can sense the parameters of the operating environment of the dry-type transformer 2, improving the accuracy of fault early warning.In this embodiment, the dry-type transformer 2 is an SCB18 type Class 1 energy-efficient dry-type transformer, the current transformer 3 is a BH-0.66 current transformer, the fluorescent fiber optic temperature sensor 4 is an ST type fluorescent fiber optic temperature sensor, the smoke sensor 5 is a JTY-GD smoke sensor, the temperature and humidity sensor is an RS-WS-N01 temperature and humidity sensor, the smart terminal is a PHM-300U smart terminal, the vibration sensor 9 is a TX9R033 vibration sensor, the heater 10 is a DJR heater, and the cooling fan 11 is a GFDD cooling fan.

[0019] The UHF ultra-high frequency partial discharge sensor 8 is fixedly connected to the housing 1 and electrically connected to the smart terminal 7, located on the top inner side of the housing 1. The smart terminal 7 uses UHF ultra-high frequency detection to monitor the partial discharge signal inside the dry-type transformer 2. Utilizing the generation and attenuation of ultra-high frequency signals within the dry-type transformer 2, it collects, analyzes, and locates the partial discharge source of the dry-type transformer 2, monitoring the internal partial discharge information of the equipment in real time during operation. This allows for timely reflection of the equipment's insulation status and its development trend, preventing insulation accidents.

[0020] Secondly, the vibration sensor 9 is installed on the dry-type transformer 2, and is electrically connected to the smart terminal 7. The vibration sensor 9 is a magnetically adsorbed type, installed on the left and right sides of the lower clamp and the bottom channel steel of the dry-type transformer 2. It monitors the vibration signal of the operating dry-type transformer 2 in real time, obtaining the winding mechanical status without power outages; it can monitor data sampling rates up to 1K in real time, meeting the requirements of intensive data analysis by the background software. A set of dry-type transformer 2 is equipped with four vibration sensors 9, providing abundant analytical data. Its core value lies in the early detection of latent transformer faults (such as minor deformations), avoiding power grid accidents caused by sudden faults.

[0021] Meanwhile, heaters 10 are respectively installed at the bottom of the high and low voltage sides of the dry-type transformer 2, and the heaters 10 are electrically connected to the smart terminal 7. One heater 10 is installed at the bottom of each of the high and low voltage sides of the dry-type transformer 2. When the smart terminal 7 detects that the temperature and humidity inside the outer casing 1 exceed the set value, it automatically turns on or off the heater 10.

[0022] In addition, cooling fans 11 are respectively installed at the bottom of the high and low voltage sides of the dry-type transformer 2, and the cooling fans 11 are electrically connected to the smart terminal 7. One cooling fan 11 is installed at the bottom of each of the high and low voltage sides of the dry-type transformer 2. When the smart terminal 7 detects that the temperature and humidity inside the outer casing 1 exceed the set value, it automatically turns on or off the cooling fans 11.

[0023] This utility model discloses an intelligent dry-type energy-saving transformer. The core of the dry-type transformer 2 is designed using Shougang ultra-low loss high magnetic induction silicon steel sheet 20SQGD070. The dry-type transformer 2 meets the first-level energy efficiency requirements in "GB20052-2024 Energy Efficiency Limits and Energy Efficiency Grades for Power Transformers". The current transformer 3 is installed on the low-voltage outgoing copper busbar of the dry-type transformer 2. Each fluorescent fiber optic temperature sensor 4 is configured with 9 channels. The dry-type transformer 2 has a total of 6 windings (high and low voltage). One channel is installed in each winding and one channel is installed in the core, with 2 channels reserved for backup. It has the characteristics of high insulation, high voltage resistance (up to 100kV), and anti-electromagnetic interference, and can be directly used for temperature measurement of the high-voltage winding. The smoke sensor 5 is installed above the dry-type transformer 2, on the inner top of the outer casing 1. It adopts a long-life, high-stability, and high-sensitivity precision photoelectric sensor, resists strong light interference, and emits audible and visual alarm signals when the smoke concentration in the environment reaches a certain level to warn people to escape the fire danger. The intelligent terminal 7 employs UHF (ultra-high frequency) detection to monitor the partial discharge signal inside the dry-type transformer 2. Utilizing the generation and attenuation of ultra-high frequency signals within the dry-type transformer 2, it collects, analyzes, and locates the partial discharge source, monitoring the internal partial discharge information of the equipment in real time during operation. This promptly reflects the insulation status and its development trend, preventing insulation accidents. The vibration sensor 9 is a magnetically adsorbed vibration sensor, installed on the left and right sides of the lower clamp and the base channel steel of the dry-type transformer 2. It monitors the vibration signal of the operating dry-type transformer 2 in real time, acquiring the winding mechanical status without power interruption. It can monitor data sampling rates up to 1K in real time, meeting the requirements of intensive data analysis in the background software. A set of dry-type transformer 2 is equipped with four vibration sensors 9, providing abundant analytical data. Its core value lies in the early detection of latent transformer faults (such as minor deformations), preventing power grid accidents caused by sudden failures. The intelligent terminal 7 has a built-in 5G IoT card, an RS485 communication interface, and uses the MODBUS TCP / IP protocol. By collecting various signals and monitoring data from the current transformer 3, the fluorescent fiber optic temperature sensor 4, the smoke sensor 5, the temperature and humidity sensor 6, the UHF ultra-high frequency partial discharge sensor 8, and the vibration sensor 9, the intelligent terminal 7 can monitor the winding temperature, current, voltage, operating time, annual energized time, load rate, annual maximum load, and annual maximum load utilization hours of the dry-type transformer 2 in real time. All monitored temperature, humidity, and electrical parameters can be viewed on the display screen of the intelligent terminal 7. The data can be stored in real time and uploaded to a data center. Its monitoring and management functions utilize 5G IoT technology to achieve 24 / 7 comprehensive operation and maintenance monitoring and management through web pages, mobile apps, and WeChat official accounts, realizing safe, economical, energy-saving, and intelligent transformer operation.When the intelligent terminal 7 detects that the temperature and humidity inside the outer casing 1 exceed the set values, it automatically turns on or off the heater 10 and the cooling fan 11. This utility model can sense the parameters of the operating environment of the dry-type transformer 2, collect electrical parameters such as voltage and current, and sense operating states such as partial discharge, thereby improving the accuracy of fault early warning and enabling a more accurate assessment of the lifespan of the dry-type transformer 2.

[0024] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. An intelligent dry-type energy-saving transformer, comprising a casing and a dry-type transformer, wherein the dry-type transformer is disposed inside the casing, characterized in that, It also includes monitoring components; The monitoring components include a current transformer, a fluorescent fiber optic temperature sensor, a smoke sensor, a temperature and humidity sensor, and a smart terminal. The current transformer is installed on the low-voltage outgoing copper busbar of the dry-type transformer; there are multiple fluorescent fiber optic temperature sensors, one each on the high-voltage winding, low-voltage winding, and core of the dry-type transformer; the smoke sensor is fixedly connected to the housing and located at the top inside the housing; the temperature and humidity sensor is fixedly connected to the housing and located inside the housing; the smart terminal is fixedly connected inside the housing and is electrically connected to the current transformer, the fluorescent fiber optic temperature sensor, the smoke sensor, and the temperature and humidity sensor.

2. The intelligent dry-type energy-saving transformer as described in claim 1, characterized in that, The monitoring component also includes a UHF ultra-high frequency partial discharge sensor; the UHF ultra-high frequency partial discharge sensor is fixedly connected to the housing and electrically connected to the smart terminal, and is located on the top inner side of the housing.

3. The intelligent dry-type energy-saving transformer as described in claim 2, characterized in that, The monitoring component also includes a vibration sensor; the vibration sensor is mounted on the dry-type transformer and is electrically connected to the smart terminal.

4. The intelligent dry-type energy-saving transformer as described in claim 3, characterized in that, Heaters are respectively installed at the bottom of the high and low voltage sides of the dry-type transformer, and the heaters are electrically connected to the smart terminal.

5. The intelligent dry-type energy-saving transformer as described in claim 4, characterized in that, The high-voltage and low-voltage sides of the dry-type transformer are respectively equipped with cooling fans at the bottom, and the cooling fans are electrically connected to the smart terminal.

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