CN207198235U - A kind of transformer power failure alarm device - Google Patents

Abstract

A transformer power failure alarm device, the alarm device includes a plurality of monitors for real-time monitoring of the electrical signal at the output end of the transformer; a voltage-to-current converter for converting the electrical signal at the output end of the plurality of monitors into a digital signal ; A plurality of locators for real-time monitoring of transformer position signals; a plurality of temperature samplers for real-time monitoring of transformer temperature signals; connected with the voltage-current converter for processing digital signals, position signals, and temperature signal control The controller is connected in series with a wireless receiving module for receiving position signals and temperature signals; a communicator for sending the alarm request signal generated by the controller to the server after processing. This device solves the problem that the general transformer power failure alarm device can only monitor the operation status of one transformer, but cannot monitor multiple transformers, and the setting of the power module provides a stable power supply for the alarm device, thereby improving the security of the system and practicality.

Description

A transformer power failure alarm device

technical field

The utility model belongs to the technical field of transformers, in particular to a power failure alarm device for transformers.

Background technique

Transformers are important equipment for power transmission in substations and play a very important role. Transformers usually cause damage to components due to overload operation and high temperature, and power outages due to line faults. Due to scattered and inaccurate places for repairs by users, it is easy to cause overtime repairs and give Inconvenience to users. The existing transformer power failure alarm system, such as a transformer power failure alarm system announced by patent announcement number CN204721095U, includes a signal acquisition device, a wireless signal transmitting device, a wireless signal receiving device and a position line simulation device, and the position line simulation device includes Voice prompt module, signal processing module and LED position display module. The wireless signal transmits the transformer and line operation status signals received by the receiving device to the signal processing module for signal processing. The processed signals are respectively processed by the voice prompt module and the LED position display module. Alarm and display. However, this alarm system can only monitor the operating state of one transformer, and cannot monitor multiple transformers. In addition, the power supply of the alarm device is generally a storage battery, which has a short service life and a small operating temperature range.

Contents of the invention

The purpose of this utility model is to solve the above technical problems and provide a transformer power failure alarm device.

The technical solution of the utility model is:

A transformer power failure alarm device is characterized in that it includes a plurality of monitors for real-time monitoring of the electrical signal at the output end of the transformer; a voltage-to-current converter for converting the electrical signal at the output end of the plurality of monitors into a digital signal ; a plurality of locators for real-time monitoring of transformer position signals; a plurality of temperature samplers for real-time monitoring of transformer temperature signals; connected with the voltage-current converter for processing digital signals, position signals, and temperature signal control The controller is connected in series with a wireless receiving module for receiving position signals and temperature signals; a communicator for sending the alarm request signal generated by the controller to the server after processing. Such a device can monitor the operating status of multiple transformers, saving the use cost.

The monitor includes a voltage monitor for real-time monitoring of the voltage signal at the output end of the transformer and a current monitor for real-time monitoring of the current signal at the output end of the transformer;

The electric signal at the output terminal of the monitor includes a low voltage signal and a low current signal.

The voltage monitor includes a voltage transformer and a voltage sampling unit for collecting the low-voltage signal converted by the voltage transformer at the output terminal of the transformer; the current monitor includes a current transformer and a voltage sampling unit for collecting the output terminal voltage of the transformer A current sampling unit for a low current signal obtained by converting the current through the current transformer.

The server is used for responding to the alarm request signal and sending alarm information to maintenance personnel. In this way, the maintenance personnel can be notified in time of the specific location of the power-off transformer, which is convenient for the maintenance personnel.

The voltage-to-current converter, controller, and communicator are powered by a power supply module.

The power module includes an AC/DC power conversion unit that converts 380V alternating current into 12V direct current; a supercapacitor unit for supplying power to the voltage-current converter, controller, and communicator; A power management unit that intelligently manages the charge and discharge of the supercapacitor unit.

The beneficial effects of the utility model are:

The utility model solves the problem that the general transformer power-off alarm system can only monitor the running state of one transformer, but cannot monitor multiple transformers, and the setting of the power supply module provides a stable power supply for the alarm device, thereby improving the safety of the system sex and practicality.

Description of drawings

Fig. 1 is the working schematic diagram of the utility model;

In the figure: 1-monitor, 11-voltage monitor, 111-voltage transformer, 112-voltage sampling unit, 12-current monitor, 121-current transformer, 122-current sampling unit, 2-locator, 3 -Current-voltage converter, 4-controller, 5-communicator, 6-server, 7-temperature sampler, 8-power module, 81-AC/DC power conversion unit, 82-power management unit, 83-supercapacitor Unit, 9-wireless receiving module.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described with embodiment.

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this description, those skilled in the art can make modifications to the embodiment without creative contribution according to needs, but as long as it is within the utility model All new claims are protected by patent law.

Embodiment 1, as shown in Figure 1, a transformer power failure alarm device is characterized in that it includes a plurality of monitors 1 for real-time monitoring of the electrical signal at the output end of the transformer; for outputting a plurality of monitors 1 A voltage-to-current converter 3 that converts terminal electrical signals into digital signals. The voltage-to-current converter 3 here is provided with multiple input ports for connecting multiple monitors 1, and the corresponding input ports are provided with multiple input ports for connecting to the controller 4 The output port; multiple locators 2 for real-time monitoring of transformer position signals, locator 2 has a built-in GPS module and a terminal of the mobile communication module, and is used to send the positioning data obtained by the GPS module to the controller 4 through the mobile communication module A plurality of temperature samplers 7 for real-time monitoring of transformer temperature signals, preferably, the temperature sampler 7 here is a wireless temperature sampler of model RS-WS-DY-6-2, responsible for temperature signals by GPRS mode wireless Sent to the controller 4; connected with the voltage-to-current converter 3, the controller 4 for processing digital signals, position signals, and temperature signals, and the controller 4 is connected in series to receive the wireless reception of the position signals and temperature signals Module 9, where the controller 4 refers to an internal storage device that can use a programmable memory as an instruction, which can be used to perform specific functions, such as logic functions, sequence functions, timing functions, counting functions, and arithmetic operations, etc., and Various external devices can be controlled by several digital or analog input modules and output modules, the preferred model is the PLC all-in-one machine of QJ-16RPLC-001; it is used to process the alarm request signal generated by the controller 4 Send to the communicator 5 of the server 6. The monitor 1 includes a voltage monitor 11 for real-time monitoring of the voltage signal at the output end of the transformer and a current monitor 12 for real-time monitoring of the current signal at the output end of the transformer; the electrical signal at the output end of the monitor 1 includes a low voltage signal and low current signal. The voltage monitor 11 includes a voltage transformer 111 and a voltage sampling unit 112 for collecting low-voltage signals converted by the voltage transformer 111 at the output terminal voltage of the transformer. The preferred model of the voltage sampling unit 112 here is KR-AV32 The 32-way analog quantity acquisition unit; the current monitor 12 includes a current transformer 121 and a current sampling unit 122 for collecting the low current signal converted by the current transformer 121 from the output terminal current of the transformer, where the current sampling Unit 122 is preferably a 14-channel AC current signal acquisition unit whose model is KR-IT14. The server 6 is used for responding to the alarm request signal and sending alarm information to maintenance personnel. The voltage-to-current converter 3 , controller 4 , communicator 5 , and wireless receiving module 9 are powered by a power supply module 8 . The power supply module 8 includes an AC/DC power conversion unit 81 that converts 380V alternating current into 12V direct current; a supercapacitor unit for supplying power to the voltage-current converter 3, controller 4, communicator 5, and wireless receiving module 9 83. The supercapacitor unit 83 here is a new type of green and environment-friendly energy storage device (activated carbon). The preferred model is the supercapacitor YEC-8A. Its charging speed is fast, and it can reach 95% of its rated capacity after charging for 10 seconds to 10 minutes. % or more, long cycle life, deep charge and discharge cycles up to 10,000 to 500,000 times, high safety factor, long-term use without maintenance, in the case of transformer power failure, it can supply power to the alarm device for a long time to ensure the safety of the device Normal operation: the power management unit 82 for intelligently managing the charging and discharging of the supercapacitor unit 83, the power management unit 82 is preferably a power manager with a model of SR-328V.

Claims (6)

1. A transformer power failure alarm device, characterized in that it includes a plurality of monitors (1) for real-time monitoring of the electrical signal at the output end of the transformer; for converting the electrical signal at the output end of the plurality of monitors (1) A voltage-current converter (3) into a digital signal; a plurality of locators (2) for real-time monitoring of transformer position signals; a plurality of temperature samplers (7) for real-time monitoring of transformer temperature signals; and the voltage and current The converter (3) is connected to a controller (4) for processing digital signals, position signals, and temperature signals, and the controller (4) is connected in series with a wireless receiving module (9) for receiving position signals and temperature signals; The communicator (5) for sending the alarm request signal generated by the controller (4) to the server (6). 2. A transformer power failure alarm device according to claim 1, characterized in that: the monitor (1) includes a voltage monitor (11) for real-time monitoring of the voltage signal at the output terminal of the transformer and a real-time a current monitor (12) for monitoring the current signal at the output terminal of the transformer; The transformer power failure alarm device according to claim 1, characterized in that: the electrical signal at the output terminal of the monitor (1) includes a low voltage signal and a low current signal. 3. A transformer power failure alarm device according to claim 2, characterized in that: the voltage monitor (11) includes a voltage transformer (111) and is used to collect the output voltage of the transformer through the voltage transformer The voltage sampling unit (112) of the low-voltage signal converted by the device (111); the current monitor (12) includes a current transformer (121) and is used to collect the output current of the transformer through the current transformer (121) A current sampling unit (122) for the converted low current signal. 4. The transformer power failure alarm device according to claim 1, characterized in that: the server (6) is configured to respond to the alarm request signal and send alarm information to maintenance personnel. 5. A transformer power failure alarm device according to claim 1, characterized in that: the voltage-current converter (3), the controller (4), the communicator (5), and the wireless receiving module (9) Powered by the power module (8). 6. A transformer power failure alarm device according to claim 5, characterized in that: the power module (8) includes an AC/DC power conversion unit (81) for converting 380V AC power into 12V DC power; A supercapacitor unit (83) that supplies power to the voltage-current converter (3), controller (4), communicator (5), and wireless receiving module 9; for charging and discharging the supercapacitor unit (83) A power management unit (82) for intelligent management.