阅读说明：本技术 一种干式变压器铁芯温度测量系统 (Dry-type transformer core temperature measurement system ) 是由 邓玉平 于 2020-12-31 设计创作，主要内容包括：本发明公开了一种干式变压器铁芯温度测量系统,包括测量控制器、信号转换器,所述测量控制器电性连接所述信号转换器,所述信号转换器一端电性连接有温度传感器一,所述信号转换器一端电性连接有温度传感器二,所述信号转换器一端电性连接有温度传感器三,所述测量控制器一端电性连接有主动散热单元,所述测量控制器内部设置有数据整合计算模块,所述测量控制器内部设置有温度判定模块,所述测量控制器内部设置有无线收发模块；本发明能够有效解决现有的干式变压器铁芯温度测量系统测量精准度较差的问题,且能够及时在变压器内部温度过高时进行散热工作,防止变压器因温度过高导致故障,使用方便实用性强。(The invention discloses a dry-type transformer core temperature measuring system which comprises a measuring controller and a signal converter, wherein the measuring controller is electrically connected with the signal converter, one end of the signal converter is electrically connected with a first temperature sensor, one end of the signal converter is electrically connected with a second temperature sensor, one end of the signal converter is electrically connected with a third temperature sensor, one end of the measuring controller is electrically connected with an active heat dissipation unit, a data integration calculation module is arranged in the measuring controller, a temperature judgment module is arranged in the measuring controller, and a wireless receiving and transmitting module is arranged in the measuring controller; the dry-type transformer core temperature measurement system can effectively solve the problem that an existing dry-type transformer core temperature measurement system is poor in measurement accuracy, can timely perform heat dissipation work when the temperature inside the transformer is too high, prevents the transformer from being broken down due to the fact that the temperature is too high, and is convenient to use and strong in practicability.)

1. The utility model provides a dry-type transformer core temperature measurement system, includes measurement controller, signal converter, its characterized in that, measurement controller electric connection signal converter, signal converter one end electric connection has temperature sensor one, signal converter one end electric connection has temperature sensor two, signal converter one end electric connection has temperature sensor three, measurement controller one end electric connection has the initiative radiating unit, the inside data integration calculation module that is provided with of measurement controller, the inside temperature determination module that is provided with of measurement controller, the inside wireless transceiver module that is provided with of measurement controller.

2. A dry-type transformer core temperature measurement system according to claim 1, wherein the dry-type transformer core temperature measurement system comprises the steps of:

s1: the temperature sensor I measures the temperature of the iron core, transmits a temperature data voltage signal to the signal converter, and the signal converter converts the temperature voltage signal into a digital signal and transmits the digital signal to the measurement controller;

s2: the temperature sensor II measures the temperature of the iron core, transmits a temperature data voltage signal to the signal converter, and the signal converter converts the temperature voltage signal into a digital signal and transmits the digital signal to the measurement controller;

s3: the temperature sensor III measures the temperature of the iron core, transmits a temperature data voltage signal to the signal converter, and the signal converter converts the temperature voltage signal into a digital signal and transmits the digital signal to the measurement controller;

s4: the measurement controller presets a temperature threshold, and an internal data integration calculation module integrates and calculates an average value of the three groups of temperature measurement data to obtain average value temperature data;

s5: the temperature judging module compares and judges the mean temperature data with a preset temperature threshold;

s6: when the mean temperature data does not exceed the preset temperature threshold, the measurement controller controls the wireless transceiving module to send the mean temperature data to the recording equipment;

s7: when the mean temperature data exceeds the preset temperature threshold, the measurement controller controls the active heat dissipation unit to dissipate heat, and simultaneously controls the wireless transceiver module to send the mean temperature data to the recording device, until the mean values of the temperature measurement data of the three groups of temperature sensors in S1, S2 and S3 are reduced to be below the preset temperature threshold, the measurement controller stops the active heat dissipation unit from working.

3. The dry-type transformer core temperature measurement system according to claim 1, wherein the first temperature sensor, the second temperature sensor and the third temperature sensor are uniformly arranged at different positions of the transformer core.

4. The system for measuring the temperature of the dry-type transformer core according to claim 1, wherein the temperature sensor is a PT100 temperature sensor, the temperature and the resistance of a PT100 thermal resistor in the PT100 temperature sensor are changed, the resistance of the resistor sensor is changed by a metal along with the temperature change, and the resistance is changed differently for different metals every time the temperature is changed, so that the temperature measurement is performed by using the characteristic.

5. The dry-type transformer core temperature measuring system according to claim 1, wherein the data integration calculating module, the temperature determining module and the wireless transceiver module are electrically connected to the inside of the measurement controller.

Technical Field

The invention relates to the technical field of temperature measurement systems, in particular to a dry-type transformer core temperature measurement system.

Background

The dry type transformer is widely used in places such as local lighting, high-rise buildings, airports, wharf CNC mechanical equipment and the like, and is simply a voltage transformation method that an iron core and a winding are not immersed in insulating oil.

The dry type transformer needs to measure the temperature of the transformer core inside the dry type transformer in the using process, so that the transformer fault caused by overheating of the iron core is prevented, the temperature measuring system of the transformer core needs to be used, and the measuring accuracy of the existing dry type transformer core temperature measuring system is poor.

Disclosure of Invention

The present invention is directed to a system for measuring temperature of an iron core of a dry-type transformer, so as to solve the problems mentioned in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a dry-type transformer core temperature measurement system, includes measurement controller, signal converter, measurement controller electric connection the signal converter, signal converter one end electric connection has temperature sensor one, signal converter one end electric connection has temperature sensor two, signal converter one end electric connection has temperature sensor three, measurement controller one end electric connection has the initiative radiating unit, the inside data integration calculation module that is provided with of measurement controller, the inside temperature that is provided with of measurement controller judges the module, the inside wireless transceiver module that is provided with of measurement controller.

As a further scheme of the invention: the dry type transformer iron core temperature measuring system comprises the following steps:

s1: the temperature sensor I measures the temperature of the iron core, transmits a temperature data voltage signal to the signal converter, and the signal converter converts the temperature voltage signal into a digital signal and transmits the digital signal to the measurement controller;

s2: the temperature sensor II measures the temperature of the iron core, transmits a temperature data voltage signal to the signal converter, and the signal converter converts the temperature voltage signal into a digital signal and transmits the digital signal to the measurement controller;

s3: the temperature sensor III measures the temperature of the iron core, transmits a temperature data voltage signal to the signal converter, and the signal converter converts the temperature voltage signal into a digital signal and transmits the digital signal to the measurement controller;

s4: the measurement controller presets a temperature threshold, and an internal data integration calculation module integrates and calculates an average value of the three groups of temperature measurement data to obtain average value temperature data;

s5: the temperature judging module compares and judges the mean temperature data with a preset temperature threshold;

s6: when the mean temperature data does not exceed the preset temperature threshold, the measurement controller controls the wireless transceiving module to send the mean temperature data to the recording equipment;

s7: when the mean temperature data exceeds the preset temperature threshold, the measurement controller controls the active heat dissipation unit to dissipate heat, and simultaneously controls the wireless transceiver module to send the mean temperature data to the recording device, until the mean values of the temperature measurement data of the three groups of temperature sensors in S1, S2 and S3 are reduced to be below the preset temperature threshold, the measurement controller stops the active heat dissipation unit from working.

As a still further scheme of the invention: the first temperature sensor, the second temperature sensor and the third temperature sensor are uniformly arranged at different positions of the transformer iron core.

As a still further scheme of the invention: the temperature sensor is a PT100 temperature sensor, the temperature and the resistance value of a PT100 thermal resistor in the PT100 temperature sensor are changed, the resistance value of the resistor sensing is changed along with the temperature change of metal, the resistance value is changed differently when the temperature changes once for different metals, and the temperature is measured by utilizing the characteristic.

As a still further scheme of the invention: the data integration calculation module, the temperature judgment module and the wireless transceiving module are all electrically connected to the inside of the measurement controller.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the three groups of temperature sensors are used for setting different positions of the transformer core, and the data integration calculation module can integrate and calculate the average value of the temperature measurement data and provide the average value for the temperature judgment module for judgment, so that the measurement accuracy is improved, and the integral control is facilitated.

2. The temperature judgment module compares and judges the mean temperature data with the preset temperature threshold, and when the mean temperature data exceeds the preset temperature threshold, the measurement controller controls and starts the active heat dissipation unit to dissipate heat, so that the condition that the transformer fails due to overheating can be effectively avoided.

Drawings

Fig. 1 is a schematic structural diagram of a dry-type transformer core temperature measurement system.

Fig. 2 is a schematic diagram of an internal structure of a measurement controller in a dry-type transformer core temperature measurement system.

Fig. 3 is a schematic diagram of a system flow structure of a dry-type transformer core temperature measurement system.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, in an embodiment of the present invention, a dry-type transformer core temperature measurement system includes a measurement controller and a signal converter, the measurement controller is electrically connected to the signal converter, one end of the signal converter is electrically connected to a first temperature sensor, one end of the signal converter is electrically connected to a second temperature sensor, one end of the signal converter is electrically connected to a third temperature sensor, one end of the measurement controller is electrically connected to an active heat dissipation unit, a data integration calculation module is disposed inside the measurement controller, a temperature determination module is disposed inside the measurement controller, and a wireless transceiver module is disposed inside the measurement controller.

Example one

The temperature sensor I measures the temperature of an iron core and transmits a temperature data voltage signal to the signal converter, the signal converter converts the temperature voltage signal into a digital signal and transmits the digital signal to the measurement controller, the temperature sensor II measures the temperature of the iron core and transmits the temperature data voltage signal to the signal converter, the signal converter converts the temperature voltage signal into the digital signal and transmits the digital signal to the measurement controller, the temperature sensor III measures the temperature of the iron core and transmits the temperature data voltage signal to the signal converter, and the signal converter converts the temperature voltage signal into the digital signal and transmits the digital signal to the measurement controller.

In the embodiment, the three groups of temperature sensors respectively transmit the temperature data to the measurement controller through the signal converter, so that the operation is convenient.

Example two

The measurement controller presets a temperature threshold, the internal data integration calculation module integrates and calculates the mean value of the three groups of temperature measurement data to obtain mean value temperature data, and the temperature judgment module compares and judges the mean value temperature data with the preset temperature threshold.

In this embodiment, the data integration calculation module can integrate and calculate the average value of the temperature measurement data, and provides the average value for the temperature determination module to perform determination, so that the measurement accuracy is improved, and the overall control is facilitated.

EXAMPLE III

When the mean temperature data does not exceed the preset temperature threshold, the measurement controller controls the wireless transceiver module to send the mean temperature data to the recording device, when the mean temperature data exceeds the preset temperature threshold, the measurement controller controls the active heat dissipation unit to dissipate heat, meanwhile, the measurement controller controls the wireless transceiver module to send the mean temperature data to the recording device, and when the mean value of the temperature measurement data of the three groups of temperature sensors in S1, S2 and S3 is reduced to be below the preset temperature threshold, the measurement controller stops the active heat dissipation unit from working.

In this embodiment, when the mean temperature data exceeds the preset temperature threshold, the measurement controller controls the active heat dissipation unit to dissipate heat, so as to effectively avoid the transformer from failing due to overheating.

Example four

The first temperature sensor, the second temperature sensor and the third temperature sensor are uniformly arranged at different positions of the transformer iron core.

In this embodiment, set up transformer core different positions through three temperature sensor groups, data of averaging again can effectively promote measurement accuracy.

EXAMPLE five

The temperature sensor is a PT100 temperature sensor, the temperature and the resistance value of a PT100 thermal resistor in the PT100 temperature sensor are changed, the resistance value of the resistor sensing is changed along with the temperature change of metal, the resistance value is changed differently when the temperature changes once for different metals, and the temperature is measured by utilizing the characteristic.

In the embodiment, the PT100 thermal resistance sensor has higher precision, the temperature acquisition range can be between-200 ℃ and +850 ℃, the temperature range is large, and the use is more convenient.

The working principle of the invention is as follows: the temperature sensor I measures the temperature of an iron core, transmits a temperature data voltage signal to the signal converter, the signal converter converts the temperature voltage signal into a digital signal and transmits the digital signal to the measurement controller, the temperature sensor II measures the temperature of the iron core and transmits the temperature data voltage signal to the signal converter, the signal converter converts the temperature voltage signal into a digital signal and transmits the digital signal to the measurement controller, the temperature sensor III measures the temperature of the iron core and transmits the temperature data voltage signal to the signal converter, the signal converter converts the temperature voltage signal into a digital signal and transmits the digital signal to the measurement controller, the measurement controller presets a temperature threshold value, the internal data integration calculation module integrates and calculates an average value of three groups of temperature measurement data to obtain average value temperature data, and the temperature determination module compares and determines the average value temperature data with the preset temperature threshold value, when the mean temperature data does not exceed the preset temperature threshold, the measurement controller controls the wireless transceiving module to send the mean temperature data to the recording equipment, when the mean temperature data exceeds the preset temperature threshold, the measurement controller controls the active heat dissipation unit to dissipate heat, meanwhile, the measurement controller controls the wireless transceiving module to send the mean temperature data to the recording equipment, and when the mean value of the temperature measurement data of the three groups of temperature sensors is reduced to be below the preset temperature threshold, the measurement controller stops the active heat dissipation unit to work, namely the whole temperature measurement work of the transformer core is completed.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.