Breaker remote monitoring device based on NB-IoT

Abstract

The utility model relates to the technical field of power equipment, in particular to an NB-IoT (Narrow Band Internet of Things)-based circuit breaker remote monitoring device, which comprises an MCU (Microprogrammed Control Unit) main control unit, a power supply module, an electric quantity acquisition module, an opening and closing control module and an NB-IoT module. The power supply module, the electric quantity acquisition module, the opening and closing control module and the NB-IoT module are respectively connected with the MCU main control unit. The electric quantity acquisition module and the opening and closing control module are respectively connected with a circuit breaker on a power supply line; and the NB-IoT module establishes communication with the server. The NB-IoT-based circuit breaker remote monitoring device can remotely control the opening action and the closing action of a circuit breaker and remotely monitor the three-phase voltage, the three-phase current, the contact temperature, the opening / closing state and the energy storage state of a closing spring of the circuit breaker, and has a certain relay protection function; the integration degree is high, the traditional function devices which are independently arranged can be reduced and replaced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power equipment, and in particular to a circuit breaker remote monitoring device based on NB-IoT. Background Art

[0002] Circuit breakers are important switchgear in power systems. They are numerous and widely distributed in power systems, and they play an important role in controlling the on-off of lines and relay protection. The intelligence and Internet of Things of circuit breakers are crucial to the construction of ubiquitous power Internet of Things.

[0003] NB-IoT, also known as low-power wide area network, can be directly deployed on GSM networks, UMTS networks or LTE networks, supporting cellular data connections of low-power devices in wide area networks, with the characteristics of super coverage, ultra-low power consumption, ultra-low cost, and ultra-large connection. With the continuous commercialization of the Internet of Things, various applications based on NB-IoT technology have gradually emerged in various fields, which can greatly reduce management costs and allow network managers to grasp various operational data at any time. NB-IoT supports efficient connection of devices with long standby time and high network connection requirements. The battery life of NB-IoT devices can be increased to at least 10 years, while also providing very comprehensive indoor cellular data connection coverage.

[0004] In the prior art, the current, temperature, opening and closing states of the circuit breaker and the control thereof are usually implemented by separate devices, which have a low degree of integration and increase the industrial cost. Utility Model Content

[0005] The utility model aims to solve the technical problem in the prior art that the current, temperature, opening and closing status and control of the circuit breaker are usually implemented by separate devices and have a low degree of integration, and provides a circuit breaker remote monitoring device based on NB-IoT.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] A circuit breaker remote monitoring device based on NB-IoT, comprising: an MCU main control unit, a power module, an electric quantity collection module, a switch opening and closing control module and an NB-IoT module;

[0008] The power supply module, the power collection module, the opening and closing control module and the NB-IoT module are respectively connected to the MCU main control unit;

[0009] The power collection module and the opening and closing control module are respectively connected to the circuit breaker on the power supply line;

[0010] The NB-IoT module establishes communication with the server.

[0011] Furthermore: the power collection module includes: a three-phase voltage sampling circuit and a three-phase current sampling circuit;

[0012] The three-phase voltage sampling circuit and the three-phase current sampling circuit are respectively connected to the MCU main control unit;

[0013] The three-phase voltage sampling circuit and the three-phase current sampling circuit are respectively connected to the circuit breakers on the power supply line.

[0014] Further: the opening and closing control module includes: a first circuit breaker control circuit and a second circuit breaker control circuit; the circuit breaker includes: a closing circuit breaker and an opening circuit breaker;

[0015] The first circuit breaker control circuit and the second circuit breaker control circuit are respectively connected to the MCU main control unit;

[0016] The first circuit breaker control circuit is connected to a closing circuit breaker on the power supply line;

[0017] The second circuit breaker control circuit is connected to the opening circuit breaker on the power supply line.

[0018] Further: also includes: a temperature acquisition module;

[0019] The temperature acquisition module is electrically connected to the MCU main control unit, and the temperature acquisition module is also connected to a circuit breaker on a power supply line.

[0020] Further: the temperature acquisition module includes: a temperature sensor and a concentrator;

[0021] The temperature sensor is arranged on the circuit breaker of the power supply line, the temperature sensor communicates with the concentrator, and the concentrator is connected with the MCU main control unit via the RS485 communication interface.

[0022] Further: also includes: a status monitoring module;

[0023] The state monitoring module is electrically connected to the MCU main control unit, and the state monitoring module is also connected to a circuit breaker on a power supply line.

[0024] Further: the state monitoring module includes: an opening and closing state sampling circuit and an energy storage state sampling circuit;

[0025] The opening and closing state sampling circuit and the energy storage state sampling circuit are respectively connected to the auxiliary contacts of the circuit breaker on the power supply line;

[0026] The switch-on and switch-off state sampling circuit and the energy storage state sampling circuit are respectively connected to the MCU main control unit.

[0027] The NB-IoT-based circuit breaker remote monitoring device provided by the utility model has at least the following beneficial effects or advantages:

[0028] The utility model provides a remote monitoring device for circuit breakers based on NB-IoT, in which the power module, power acquisition module, opening and closing control module and NB-IoT module are respectively connected to the MCU main control unit; the power acquisition module and the opening and closing control module are respectively connected to the circuit breaker on the power supply line; and the NB-IoT module establishes communication with the server. The remote monitoring device for circuit breakers based on NB-IoT can remotely control the opening and closing actions of the circuit breaker, remotely monitor the three-phase voltage, three-phase current, contact temperature, opening / closing state, and energy storage state of the closing spring of the circuit breaker, and has certain relay protection functions; it has a high degree of integration, can reduce and replace the various functional components that are traditionally independently set, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure of a remote monitoring device for circuit breaker based on NB-IoT provided in an embodiment of the utility model.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 100-MCU main control unit, 200-power module, 300-power acquisition module, 400-opening and closing control module, 500-temperature acquisition module, 600-status monitoring module, 700-NB-IoT module, 800-server. DETAILED DESCRIPTION

[0032] The utility model aims to solve the technical problem in the prior art that the current, temperature, opening and closing status and control of the circuit breaker are usually implemented by separate devices and have a low degree of integration, and provides a circuit breaker remote monitoring device based on NB-IoT.

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figure 1The embodiment of the utility model provides a circuit breaker remote monitoring device based on NB-IoT, including: an MCU main control unit 100, a power module 200, a power acquisition module 300, an opening and closing control module 400, an NB-IoT module 700, a temperature acquisition module 500 and a status monitoring module 600.

[0035] The power module 200, the power acquisition module 300, the opening and closing control module 400 and the NB-IoT module 700 are respectively connected to the MCU main control unit 100. The power module 200 supplies power to the MCU main control unit 100, the power module 200, the power acquisition module 300, the opening and closing control module 400, the NB-IoT module 700, the temperature acquisition module 500 and the status monitoring module 600. The MCU main control unit 100 can be powered by the power module 200 or by the Android-USB data cable alone. The power acquisition module 300 is connected to the power supply line. The opening and closing control module 400 is connected to the circuit breaker on the power supply line. The NB-IoT module 700 establishes communication with the server 800. The temperature acquisition module 500 is electrically connected to the MCU main control unit 100, and the temperature acquisition module 500 is also connected to the circuit breaker on the power supply line. The status monitoring module 600 is electrically connected to the MCU main control unit 100 , and the status monitoring module 600 is also connected to a circuit breaker on a power supply line.

[0036] Specifically, the power collection module 300 includes: a three-phase voltage sampling circuit and a three-phase current sampling circuit. The three-phase voltage sampling circuit and the three-phase current sampling circuit are respectively connected to the MCU main control unit 100. The three-phase voltage sampling circuit and the three-phase current sampling circuit are respectively connected to the power supply line, the three-phase voltage sampling circuit is used to collect the voltage value on the circuit breaker according to the instruction of the MCU main control unit 100, and the three-phase current sampling circuit is used to collect the current value on the circuit breaker according to the instruction of the MCU main control unit 100, and the collected voltage value and current value are fed back to the MCU main control unit 100.

[0037] The opening and closing control module 400 includes: a first circuit breaker control circuit and a second circuit breaker control circuit.

[0038] The first circuit breaker control circuit and the second circuit breaker control circuit are respectively connected to the MCU main control unit 100. The first circuit breaker control circuit is connected to the closing circuit breaker on the power supply line, and the first circuit breaker control circuit is used to control the closing circuit breaker to work according to the instruction of the MCU main control unit 100. The second circuit breaker control circuit is connected to the opening circuit breaker on the power supply line, and the second circuit breaker control circuit is used to control the opening circuit breaker to work according to the instruction of the MCU main control unit 100.

[0039] The temperature acquisition module 500 includes: a temperature sensor and a concentrator; the temperature sensor is arranged on the power supply line, the temperature sensor communicates with the concentrator, and the concentrator is connected to the MCU main control unit 100 through the RS485 communication interface. The temperature sensor is used to collect the temperature of the circuit breaker and transmit the collected temperature value to the MCU main control unit 100 through the concentrator.

[0040] The state monitoring module 600 includes: an opening and closing state sampling circuit and an energy storage state sampling circuit; the opening and closing state sampling circuit and the energy storage state sampling circuit are respectively connected to the auxiliary contacts of the circuit breaker on the power supply line; the opening and closing state sampling circuit is used to collect the working state information of the circuit breaker according to the instructions of the MCU main control unit 100; the energy storage state sampling circuit is used to collect the energy storage state information of the circuit breaker according to the instructions of the MCU main control unit 100. The opening and closing state sampling circuit and the energy storage state sampling circuit are respectively connected to the MCU main control unit 100, and the working state information of the circuit breaker collected by the opening and closing state sampling circuit and the energy storage state information of the circuit breaker collected by the energy storage state sampling circuit are uploaded to the MCU main control unit 100.

[0041] In the NB-IoT-based circuit breaker remote monitoring device provided by the embodiment of the utility model, the main control chip controls other modules through corresponding pins, thereby realizing data collection and wireless data transmission. After obtaining the opening / closing value, it is sent to the server 800 through the NB-IoT wireless transmission module, and the historical data is recorded in the database for future viewing, and then the data is transmitted to the Web front end and Android App end through the corresponding tools, thereby realizing remote data collection.

[0042] See also Figure 1 The NB-IoT-based circuit breaker remote monitoring device provided by the utility model has at least the following beneficial effects or advantages:

[0043] The utility model provides a remote monitoring device for circuit breakers based on NB-IoT, wherein the power module 200, the power acquisition module 300, the opening and closing control module 400 and the NB-IoT module 700 are respectively connected to the MCU main control unit 100; the power acquisition module 300 is connected to the circuit breaker on the power supply line; the opening and closing control module 400 is connected to the circuit breaker on the power supply line; and the NB-IoT module 700 establishes communication with the server 800. The remote monitoring device for circuit breakers based on NB-IoT can remotely control the opening and closing actions of the circuit breaker, remotely monitor the three-phase voltage, three-phase current, contact temperature, opening / closing state, and energy storage state of the closing spring of the circuit breaker, and has a certain relay protection function; it has a high degree of integration, can reduce and replace each functional device that is traditionally independently set, and reduce production costs.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A circuit breaker remote monitoring device based on NB-IoT, characterized in that: include: MCU main control unit, power module, power collection module, opening and closing control module and NB-IoT module; The power supply module, the power collection module, the opening and closing control module and the NB-IoT module are respectively connected to the MCU main control unit; The power collection module and the opening and closing control module are respectively connected to the circuit breaker on the power supply line; The NB-IoT module establishes communication with the server.

2. The circuit breaker remote monitoring device based on NB-IoT according to claim 1, characterized in that: The power collection module includes: a three-phase voltage sampling circuit and a three-phase current sampling circuit; The three-phase voltage sampling circuit and the three-phase current sampling circuit are respectively connected to the MCU main control unit; The three-phase voltage sampling circuit and the three-phase current sampling circuit are respectively connected to the circuit breakers on the power supply line.

3. The circuit breaker remote monitoring device based on NB-IoT according to claim 1, characterized in that: The opening and closing control module includes: a first circuit breaker control circuit and a second circuit breaker control circuit; the circuit breaker includes: a closing circuit breaker and an opening circuit breaker; The first circuit breaker control circuit and the second circuit breaker control circuit are respectively connected to the MCU main control unit; The first circuit breaker control circuit is connected to a closing circuit breaker on the power supply line; The second circuit breaker control circuit is connected to the opening circuit breaker on the power supply line.

4. The circuit breaker remote monitoring device based on NB-IoT according to claim 1, characterized in that: Also includes: Temperature acquisition module; The temperature acquisition module is electrically connected to the MCU main control unit, and the temperature acquisition module is also connected to a circuit breaker on a power supply line.

5. The circuit breaker remote monitoring device based on NB-IoT according to claim 4 is characterized in that: The temperature acquisition module includes: a temperature sensor and a concentrator; The temperature sensor is arranged on the circuit breaker of the power supply line, the temperature sensor communicates with the concentrator, and the concentrator is connected with the MCU main control unit via the RS485 communication interface.

6. The circuit breaker remote monitoring device based on NB-IoT according to claim 1, characterized in that: Also includes: Condition monitoring module; The state monitoring module is electrically connected to the MCU main control unit, and the state monitoring module is also connected to a circuit breaker on a power supply line.

7. The circuit breaker remote monitoring device based on NB-IoT according to claim 6, characterized in that: The state monitoring module includes: an opening and closing state sampling circuit and an energy storage state sampling circuit; The opening and closing state sampling circuit and the energy storage state sampling circuit are respectively connected to the auxiliary contacts of the circuit breaker on the power supply line; The switch-on and switch-off state sampling circuit and the energy storage state sampling circuit are respectively connected to the MCU main control unit.

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