CN108667144A - A kind of intelligent breaker with fault message feedback method - Google Patents

Abstract

The invention discloses an intelligent circuit breaker with a fault information feedback method. The circuit breaker includes: an electrical signal monitoring and protection unit, which is used for detecting main circuit current, main circuit voltage and leakage current, and detecting The received electrical signal is sent to the control unit; the control unit receives the electrical signal detected by the electrical signal monitoring and protection unit, and sends a control command to the execution unit and the communication unit according to the electrical signal; the execution unit is used to The control command executes the closing and opening actions of the circuit breaker; the communication unit is used to send the received electrical signal to the external device. The intelligent circuit breaker with fault information feedback method provided by the present invention improves the safety and convenience of the power supply system, improves the protection function and scope of the circuit breaker, expands the detection and feedback functions of the circuit breaker, and better realizes Monitoring and protection functions for terminal power distribution equipment.

Description

An Intelligent Circuit Breaker with Fault Information Feedback Method

technical field

The invention relates to the technical field of low-voltage power distribution, and more specifically, to an intelligent circuit breaker with a fault information feedback method.

Background technique

With the development planning of the smart grid by the State Grid, the smart meter has become one of the key products of the smart grid construction. In order to improve the safety of the smart meter, the technology of the smart circuit breaker has continuously innovated and broken through, and has been widely used. The existing intelligent circuit breaker with automatic closing and opening satisfies the prepayment control function and degree of automation of the smart meter to a certain extent. However, the intelligent circuit breakers in the prior art do not have protections such as leakage current, over-voltage and under-voltage, which have great hidden dangers to the safety of the power supply system, and lack the functions of pre-payment early warning and fault information feedback.

Therefore, a technology is needed to realize an intelligent circuit breaker with a fault information feedback method.

Contents of the invention

The technical scheme of the invention provides an intelligent circuit breaker with a fault information feedback method to solve the problem of how to provide an intelligent circuit breaker with a fault information feedback function.

In order to solve the above problems, the present invention provides an intelligent circuit breaker with a fault information feedback method, the circuit breaker comprising:

An electrical signal monitoring and protection unit, the electrical signal monitoring and protection unit is used for main circuit current, main circuit voltage and leakage current detection, and sends the detected electrical signal to the control unit;

a control unit, the control unit receives the electrical signal detected by the electrical signal monitoring and protection unit, and sends a control command to the execution unit and the communication unit according to the electrical signal;

an execution unit, configured to execute closing and opening actions of the circuit breaker according to the received control instruction;

The communication unit is used to send the received electrical signal to an external device.

Preferably, the electrical signal monitoring and protection unit includes: a manganin shunt or a transformer, through which the main circuit current is detected.

Preferably, the electrical signal monitoring and protection unit includes: a zero-sequence transformer, and leakage current detection is performed through the zero-sequence transformer.

Preferably, the execution unit includes a driving module, and the driving module includes a motor and a gear for controlling closing and opening actions of the circuit breaker.

Preferably, the execution unit includes a tripping module, and the tripping module includes a short-circuit magnetic system, a leakage electromagnetic system and an overload system.

Preferably, when the electrical signal is at a low level, the main circuit current and running time are detected, and when the main circuit current or running time exceeds a set value, the control unit sends an opening instruction to the execution unit, through The execution unit executes the opening action.

Preferably, the communication unit sends the electrical signal to the external device through 485 or power carrier.

The technical solution of the present invention provides an intelligent circuit breaker with a fault information feedback method, the circuit breaker includes: an electrical signal monitoring and protection unit, the electrical signal monitoring and protection unit is used for main circuit current, main circuit voltage and leakage current detection, and The detected electrical signal is sent to the control unit. A control unit, the control unit receives the electrical signal detected by the electrical signal monitoring and protection unit, and sends a control instruction to the execution unit and the communication unit according to the electrical signal. The execution unit is used to execute the closing and opening actions of the circuit breaker according to the received control instructions. The communication unit is used to send the received electrical signal to an external device. The intelligent circuit breaker with fault information feedback method provided by the technical solution of the present invention further improves the safety and convenience of the power supply system, improves the protection function and scope of the circuit breaker, and expands the detection and feedback functions of the circuit breaker, which is better Realized the monitoring and protection function of terminal power distribution equipment.

Description of drawings

A more complete understanding of the exemplary embodiments of the present invention can be had by referring to the following drawings:

1 is a schematic structural diagram of an intelligent circuit breaker with a fault information feedback method according to an embodiment of the present invention; and

Fig. 2 is a schematic diagram of the appearance and structure of an intelligent circuit breaker with a fault information feedback method according to an embodiment of the present invention.

Detailed ways

Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units/elements are given the same reference numerals.

Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or overly formal meanings.

Fig. 1 is a schematic structural diagram of an intelligent circuit breaker with a fault information feedback method according to an embodiment of the present invention. In order to further improve the safety and convenience of the power supply system, it is necessary to continuously improve the protection function and scope of the circuit breaker, and to continuously expand the detection and feedback functions of the circuit breaker to better monitor and protect the terminal power distribution equipment. . The embodiment of the present invention provides an intelligent circuit breaker with a fault information feedback method. The circuit breaker of the present application includes: an electrical signal monitoring and protection unit, and the electrical signal monitoring and protection unit is used for main circuit current, main circuit voltage and leakage current Detect and send the detected electrical signal to the control unit. A control unit, the control unit receives the electrical signal detected by the electrical signal monitoring and protection unit, and sends a control instruction to the execution unit and the communication unit according to the electrical signal. The execution unit is used to execute the closing and opening actions of the circuit breaker according to the received control instructions. The communication unit is used to send the received electrical signal to an external device. As shown in FIG. 1 , an intelligent circuit breaker with a fault information feedback method includes: an electrical signal monitoring unit 101 , a control unit 102 , an execution unit 103 , an energy storage unit 105 , and a communication unit 104 .

The electrical signal monitoring and protection unit 101 is used for detecting main circuit current, main circuit voltage and leakage current, and sending the detected electric signal to the control unit. The electrical signal monitoring unit 101 includes monitoring current signals such as the main circuit current and leakage current of the circuit breaker and the main circuit voltage signal. When the electrical signal monitoring value exceeds the preset threshold, the execution unit performs an opening action to make the circuit breaker disconnect the main circuit, and The fault signal is fed back to the external device through the communication unit 104 to monitor the current fault mode.

The control unit 102, the control unit receives the electrical signal detected by the electrical signal monitoring and protection unit, and sends a control instruction to the execution unit and the communication unit according to the electrical signal. The control unit 102 has the functions of receiving and processing signals, and controls the action of the execution unit 103 and receives and transmits the signals of the communication unit 104 .

The execution unit 103 is configured to execute closing and opening actions of the circuit breaker according to the received control instruction. Preferably, the execution unit 103 includes a driving module, the driving module includes a motor and a gear, and is used to control the closing and opening actions of the circuit breaker. Executing unit 103 executes action execution functions such as closing and opening of the circuit breaker. Preferably, the execution unit 103 includes a tripping module, and the tripping module includes a short-circuit magnetic system, a leakage electromagnetic system and an overload system.

The communication unit 104 is configured to send the received electrical signal to an external device.

Preferably, the electrical signal monitoring and protection unit 101 includes: a manganin shunt or a transformer, through which the main circuit current is detected.

Preferably, the electrical signal monitoring and protection unit 101 includes: a zero-sequence transformer, through which leakage current detection is performed.

Preferably, when the electrical signal of the circuit breaker is at a low level, the main circuit current and running time are detected, and when the main circuit current or running time exceeds the set value, the control unit sends an opening instruction to the execution unit, and the opening is performed through the execution unit action.

Preferably, the communication unit 104 sends the electrical signal to the external device through 485 or power carrier. The present application communicates with external devices through the communication unit 104 to receive and/or transmit signals.

Preferably, the energy storage unit 105 can continue to supply power to the control unit 102 when the system is powered off.

The implementation mode of the present application is specifically exemplified as follows:

In the present application, the electrical signal monitoring and protection unit monitors the electrical signal including main circuit current, voltage and leakage current detection. Among them, the main circuit current detection is composed of manganin shunt or transformer, the leakage current detection is composed of zero sequence transformer, and the current and voltage monitoring includes electrical parameter measurement and monitoring.

In this application, the executing unit is composed of a driving module, a tripping module, etc., and receives electrical signals and/or signals from the control unit, and can execute closing and opening actions of the circuit breaker. Wherein, the driving module is composed of a motor and a gear, and the closing and opening are controlled by the control module. The trip module includes short circuit magnetic system, leakage magnetic system and overload system.

In this application, the control unit receives and processes collected signals and other functional logics by the chip, controls the action of the execution unit, and controls the transmission of signals by the communication unit. The signal acquisition of the control unit includes electrical signals, level signals, etc., and controls the action of the execution unit according to the signals, and transmits signals to external devices through the communication unit. The transmitted signals include signals such as circuit breaker status, failure mode, and electrical parameters. When the level signal is low level, the main circuit current and running time are detected, and when the main circuit current or running time exceeds the set value, the control execution unit executes the opening action.

In this application, the energy storage unit has the function of electric energy storage, and when the system is powered off, it can be used by the control unit to continue working to monitor the system power-off time.

In this application, the communication unit uses 485 or power carrier to transmit data to external devices.

Fig. 2 is a schematic diagram of the appearance and structure of an intelligent circuit breaker with a fault information feedback method according to an embodiment of the present invention. As shown in Figure 2, the application provides an intelligent circuit breaker with a fault information feedback function, which is composed of a circuit breaker module 1 and a control module 2. The circuit breaker module 1 shown includes an electrical signal collector, a short-circuit magnetic system, a leakage In the electromagnetic system, the control module 2 includes a control unit, a drive module, an energy storage unit and a communication unit.

An intelligent circuit breaker with fault information feedback function provided by this application has overload protection, short circuit protection, leakage protection, overvoltage protection, undervoltage protection, etc., so that the circuit breaker provides more comprehensive line protection for the safe and stable operation of the system Function. The circuit breaker of the application has the functions of metering and electric parameter measurement, and can perform load analysis and control for users. The circuit breaker of the present application has fault information feedback to realize monitoring and protection of terminal power distribution equipment. The circuit breaker of this application has RS485 or power carrier, which can realize communication with external devices. In this application, when the system is powered off, the circuit breaker can continuously monitor the system status.

The invention has been described with reference to a small number of embodiments. However, it is clear to a person skilled in the art that other embodiments than the invention disclosed above are equally within the scope of the invention, as defined by the appended patent claims.

Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise therein. All references to "a/the/the [means, component, etc.]" are openly construed to mean at least one instance of said means, component, etc., unless expressly stated otherwise. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless explicitly stated.

Claims (7)

1. a kind of intelligent breaker with fault message feedback method, the breaker include：

Electric signal monitors and protection location, and the electric signal monitoring is used for main road electric current, main road voltage and electric leakage with protection location Stream detection, and the electric signal detected is sent to control unit；

Control unit, described control unit receive the electric signal that the electric signal monitoring is detected with protection location, and according to institute It states electric signal and sends control instruction to execution unit and communication unit；

Execution unit, for according to the control instruction received, executing and being acted to the switch closing and switch opening of the breaker；

Communication unit, for the electric signal received to be sent to external equipment.

2. breaker according to claim 1, the electric signal monitoring include with protection location：Manganese copper diverter or mutual inductance Device carries out main road current detecting by the manganese copper diverter or the mutual inductor.

3. breaker according to claim 1, the electric signal monitoring include with protection location：Zero sequence transformer passes through The zero sequence transformer carries out leakage current test.

4. breaker according to claim 1, the execution unit includes drive module, and the drive module includes motor And gear, the switch closing and switch opening for controlling the breaker act.

5. breaker according to claim 1, the execution unit includes dropout module, and the dropout module includes short circuit Magnetic system, electric leakage magnetic system and overload system.

6. breaker according to claim 1 when the electric signal is low level, detects main road electric current and run time, When the main road electric current or run time exceed setting value, described control unit sends separating brake and instructs to the execution unit, Separating brake action is executed by the execution unit.

7. breaker according to claim 1, the communication unit, by 485 or power carrier mode by the telecommunications Number it is sent to external equipment.