CN203217711U - Transformer remote monitoring alarm device - Google Patents

Abstract

The utility model discloses a transformer remote monitoring alarm device. The transformer remote monitoring alarm device includes a wireless communication board which is in docking with a wireless communication network, a temperature detector and a supply power which supplies power for the wireless communication board, wherein the wireless communication board comprises a first switching signal input end, the temperature detector is arranged at a transformer end so as to detect the temperature of the transformer, and the temperature detector includes a signal transmitting part, wherein the signal transmitting part is electrically connected with the first switching signal input end and is configured to provide temperature alarm signals or temperature alarm relieving signals to the wireless communication board according to detected temperature of the transformer. With the transformer remote monitoring alarm device of the utility model adopted, real-time monitoring and alarm can be performed on transformer operation temperature states and power down/power recovery states in a power transmission and distribution process.

Description

Transformer remote monitoring and alarm device

technical field

The utility model relates to the field of power transmission and distribution, in particular to a remote monitoring and alarming device for a transformer.

Background technique

In the prior art, faults in the station area mainly rely on two methods to solve: one is to report for repairs by electricity customers; the other is to collect and transmit data on the operation status of transformers in the intelligent integrated station area. In the first method, the transformer is faulty and the protector operates, so the customer needs to report for repair, and then the duty room dispatches workers to the person in charge of the station area management. In the whole process, the accumulated time from the power outage of the station area to the customer's report for repair and order dispatching exceeds 10 Minutes, which restricts the working time of fault maintenance and greatly reduces the timeliness of emergency repair work. The latter method requires hundreds of thousands of huge investments, and requires data transmission channels, and the maintenance costs are relatively high. Therefore, with the continuous improvement of electricity customers' requirements for power supply reliability, shortening the recovery time of transformer faults and improving the reliability of equipment operation have become a key task. If the information can be obtained at the first time of power outage in the station area, the power outage time will be greatly saved.

Utility model content

The technical problem to be solved by the utility model is to carry out real-time monitoring and alarm on the operating temperature state of the transformer and the power failure/power recovery state during the power transmission and distribution process.

In order to solve the above technical problems, the utility model provides a transformer remote monitoring and alarm device, including a wireless communication board connected to the wireless communication network, a temperature detector and a power supply for the wireless communication board, wherein,

The wireless communication board includes a first switch signal input terminal,

The temperature detector is arranged at the transformer end to detect the temperature of the transformer, and the temperature detector includes a signal sending part, the signal sending part is electrically connected to the first switch signal input end and is configured to A temperature alarm signal or a temperature alarm release signal is provided to the wireless communication board.

Preferably, it also includes a power failure and recovery detector, wherein,

The wireless communication board also includes a second switch signal input terminal;

The power failure and recovery detector includes an input terminal connected to the secondary of the transformer and an output terminal connected to the second switch signal input terminal, and is configured to provide power failure to the wireless communication board in the power failure/recovery state of the transformer secondary. signal or return signal.

Preferably, the wireless communication board is a GPRS module SIM300 industrial board.

Preferably, the temperature detector is a DS18B20 temperature sensor.

Preferably, the power failure and recovery detector is a regulated power supply, and the output voltage of the output terminal of the regulated power supply is 4.5 volts direct current.

Preferably, the power supply includes an uninterruptible power supply.

Preferably, the uninterruptible power supply is a lithium battery.

Compared with the prior art, the beneficial effect of the transformer remote monitoring and alarm device of the present utility model is that by setting a wireless communication board, a temperature detector and a power failure and recovery detector, the temperature of the transformer can be included in time when the transformer fails. The alarm signal and power failure signal are sent to the handheld terminal of the maintenance personnel and the monitoring terminal of the monitoring room on duty through the wireless communication network for maintenance and debugging at any time. The power supply reliability is greatly improved, the failure time is shortened, and the cost is low.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the transformer remote monitoring alarm device of the embodiment of the present utility model;

Fig. 2 is the schematic diagram of the DS18B20 type temperature sensor of the transformer remote monitoring alarm device of the embodiment of the present utility model;

Fig. 3 is the schematic diagram of the stabilized power supply of the transformer remote monitoring alarm device of the embodiment of the present utility model;

Fig. 4 is a schematic diagram of the power supply of the transformer remote monitoring and alarming device according to the embodiment of the present invention.

Explanation of main reference signs

1-GPRS module SIM300 industrial board 2-DS18B20 temperature sensor

3-power supply 4-stabilized power supply

11-First switch signal input terminal 12-Second switch signal input terminal

21-port line 31-uninterruptible power supply

100-transformer 200-wireless communication network

300-handheld terminal 400-duty monitoring terminal

Detailed ways

The transformer remote monitoring and alarming device according to the embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

Figure 1 is a schematic diagram of the overall structure of the transformer remote monitoring and alarm device of the embodiment of the utility model; Figure 2 is a schematic diagram of the DS18B20 temperature sensor of the transformer remote monitoring and alarm device of the embodiment of the utility model; Figure 3 is a schematic diagram of the utility model A schematic diagram of the stabilized power supply of the transformer remote monitoring and alarm device of the embodiment. As shown in Figure 1, the transformer remote monitoring and alarming device of the embodiment of the present utility model includes a wireless communication board docked with a wireless communication network 200, a temperature detector and a power supply 3 for supplying power to the wireless communication board, wherein the wireless communication board includes The first switch signal input end, the temperature detector is arranged at the transformer end to detect the temperature of the transformer 100, the temperature detector includes a signal sending part (not shown), the signal sending part is electrically connected to the first switch signal input end of the wireless communication board It is connected and configured to provide a temperature alarm signal or a temperature alarm release signal to the wireless communication board according to the detected temperature of the transformer. As a preferred solution of this embodiment, the transformer remote monitoring and alarm device of the embodiment of the utility model also includes a power failure and recovery detector, wherein the wireless communication board also includes a second switch signal input terminal, and the power failure and recovery detector includes a power failure and recovery detector. The input terminal 100 connected to the secondary and the output terminal connected to the second switch signal input terminal are configured to provide a power failure signal or a power recovery signal to the wireless communication board according to the secondary power failure/power recovery status of the transformer 100 .

As a further improvement, the wireless communication board of the transformer remote monitoring and alarm device in the embodiment of the present invention is a GPRS module SIM300 type industrial board 1, the temperature detector is a DS18B20 type temperature sensor 2, and the power failure and recovery detector is a stabilized power supply 4 , the output voltage of the output terminal of the regulated power supply is 4.5 volts direct current.

In order to better illustrate the transformer remote monitoring and alarming device of the embodiment of the present invention, each part and its working principle will be described in detail below in conjunction with FIG. 2 and FIG. 3 .

GPRS module SIM300 industrial board 1 is a perfect tri-band/quad-band GSM/GPRS solution in a small-sized plug-and-play module. Using industry standard interface, with SIM card slot, it can be used as a terminal of wireless communication network to receive/send information, making SIM300C with GSM/GPRS900/1800/1900MHz function realize voice, SMS, data and fax with small size and low power consumption High-speed transmission of information. Certainly, the wireless communication board can also select any main board that can realize the utility model function for use, but the GPRS module SIM300 type industrial board 1 of the present embodiment belongs to the industrial-grade main board, and reliability is high, and operation is stable, and price is moderate, and is more reliable than other main boards. It is suitable for the technical field of the utility model, and can achieve the beneficial effects of low cost and high cost performance while realizing the functions of the utility model.

DS18B20 temperature sensor 2 is a digital temperature sensor launched by Dallas Semiconductor Company of the United States. It has a unique single-wire interface mode. DS18B20 temperature sensor 2 only needs one port line 21 (DQ pin) to realize two-way communication during communication connection. , does not require any peripheral components in use, and all sensing elements and conversion circuits are integrated in an integrated module shaped like a triode. Compared with other temperature detectors, the DS18B20 temperature sensor 2 of this embodiment has a simple structure and high cost performance.

Excessive temperature of the transformer is an important indicator of failure in the transmission and distribution process. When the temperature of the transformer 100 is too high and abnormal, the DS18B20 temperature sensor 2 detects that the temperature of the transformer 100 is higher than the preset threshold (for example, 115 degrees Celsius), and its built-in signal sending part (not shown) will pass the port line 21 (DQ pin) sends a temperature alarm signal (the level signal shown in the figure) to the first switch signal input terminal 11 of the GPRS module SIM300 industrial board 1, and the GPRS module SIM300 industrial board 1 sends the temperature alarm signal as a text message The method is sent to the handheld terminal 300 (such as maintenance personnel, etc.) and the on-duty monitoring terminal 400 through the wireless communication network 200 . In this way, when the temperature of the transformer 100 is too high, fault alarm information can be instantly sent to the relevant maintenance group and monitoring group, without waiting for the electricity user to report for repair, which greatly shortens the repair time. In addition, when the temperature of the transformer 100 returns to a normal temperature (for example, 85 degrees Celsius), the signal sending part of the temperature sensor 2 will send to the first switch signal input terminal 11 of the GPRS module SIM300 type industrial board 1 through the port line 21 (DQ pin) The temperature alarm release signal also goes through the above process, and the handheld terminal 300 and the on-duty monitoring terminal 400 can receive corresponding information.

The power outage of the transformer 100 is the most direct manifestation of a fault. When the transformer 100 secondary power failure occurs, the second switch signal input terminal 12 of the GPRS module SIM300 type industrial board 1 is de-energized through the stabilized power supply 4 connected to it, so that the GPRS module SIM300 type industrial board 1 obtains the power failure signal Afterwards, the short message is sent to the handheld terminal 300 (such as maintenance personnel, etc.) and the on-duty monitoring terminal 400 through the wireless communication network 200 . In this way, when the transformer 100 is out of power, the failure alarm information can be instantly sent to the relevant maintenance group and monitoring group, without waiting for the electricity user to report for repair, which greatly shortens the repair time. In addition, when the transformer 100 is re-energized, the stabilized power supply 4 is re-energized at the same time, and the 4.5 volt voltage signal is re-provided to the second switch signal input terminal 12 of the GPRS module SIM300 type industrial board 1 to send the re-power signal, and through the above process, The handheld terminal 300 and the duty monitoring terminal 400 can receive corresponding information.

Above, the hand-held terminal 300 and the on-duty monitoring terminal 400 can also send short messages to the GPRS module SIM300 type industrial board 1 through the wireless communication network 200 to actively inquire about the temperature status and power-off and recovery status of the transformer 100, thus realizing maintenance groups and The monitoring group can monitor the working status of the transformer 100 in real time.

4 is a schematic diagram of the power supply of the transformer remote monitoring and alarm device of the embodiment of the utility model. As another improvement, the power supply 3 of the transformer remote monitoring and alarm device of the embodiment of the utility model includes an uninterruptible power supply 31 . The uninterruptible power supply 31 can choose laminated batteries, lead-acid batteries, lithium batteries, etc. as spare parts. This embodiment uses a lithium battery. This setting is based on the consideration of operation stability and compatibility with equipment. At the same time, the lithium battery has the characteristics of easy installation, reliable operation, etc., and can be recharged repeatedly, with long life and low cost.

The beneficial effect of the utility model is reflected in that the comprehensive cost of the device is low, and the oil temperature of the transformer and the situation of power failure and restoration are transmitted to the handheld terminal of the maintenance personnel and the on-duty monitoring terminal in time through the short message, and at the same time, the short message instruction is also realized. Check the operation status of the transformer at any time, so that after the transformer is overheated, tripped and outages, the maintenance group and the monitoring group will receive the information at the first time, arrange maintenance, and change the passive situation that the power outage in the station area depends entirely on the user's repair, and take the initiative to serve Customers, improve power supply reliability.

The above embodiments are only exemplary embodiments of the utility model, and are not used to limit the utility model, and the protection scope of the utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the utility model within the spirit and protection scope of the utility model, and such modifications or equivalent replacements should also be deemed to fall within the protection scope of the utility model.

Claims (7)

1. a transformer long-distance monitoring and alarming device is characterized in that, comprise the wireless telecommunications plate that docks with wireless communication networks, Temperature Detector and be the power supply of described wireless telecommunications plate power supply, wherein,

Described wireless telecommunications plate comprises the first switching signal input end,

Described Temperature Detector is arranged at transformer terminal to detect the transformer temperature, and described Temperature Detector comprises signal transmission unit, and described signal transmission unit is electrically connected and is configured to provide heat alarm or temperature alarming ring off signal according to the transformer temperature that detects to described wireless telecommunications plate with the described first switching signal input end.

2. transformer long-distance monitoring and alarming device according to claim 1 is characterized in that, also comprise and stop the detecting device of sending a telegram in reply, wherein,

Described wireless telecommunications plate also comprises the second switch signal input part;

The described detecting device that stops sending a telegram in reply comprises the input end that is connected with transformer secondary output and the output terminal that is connected with described second switch signal input part, and be configured to according to transformer secondary output have a power failure/the telegram in reply state provides power cut signal or multiplexed electrical signal to described wireless telecommunications plate.

3. transformer long-distance monitoring and alarming device according to claim 2 is characterized in that, described wireless telecommunications plate is GPRS module SIM300 type industry plate.

4. transformer long-distance monitoring and alarming device according to claim 3 is characterized in that, described Temperature Detector is DS18B20 type temperature sensor.

5. transformer long-distance monitoring and alarming device according to claim 4 is characterized in that, the described detecting device that stops sending a telegram in reply is stabilized voltage supply, and the output voltage of the output terminal of described stabilized voltage supply is 4.5 volts of DC voltage.

6. according to each described transformer long-distance monitoring and alarming device in the claim 1 to 5, it is characterized in that described power supply comprises uninterrupted power source.

7. transformer long-distance monitoring and alarming device according to claim 6 is characterized in that, described uninterrupted power source is lithium battery.

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