CN214479833U - Accessory module and intelligent control system of circuit breaker - Google Patents

Abstract

An accessory module and an intelligent control system of a circuit breaker comprise an action device and a monitoring device, wherein the action device comprises an action coil module which is used for driving a circuit breaker action mechanism of a circuit breaker system to switch on and switch off a power circuit of the circuit breaker system; the monitoring device comprises a central control module, a signal detection module, a driving module and a power supply module, wherein the signal detection module comprises an action signal conditioning circuit for detecting the working state of the action mechanism of the circuit breaker, and the driving module comprises a coil driving module for supplying power to the action coil module and a motor driving module for supplying power to the energy storage mechanism; the function of the existing undervoltage release or shunt release/closing electromagnet can be satisfied, and the monitoring requirement can be satisfied after the device is installed on the existing circuit breaker. An intelligent control system for a circuit breaker includes an accessory module for the circuit breaker.

Description

Accessory module and intelligent control system of circuit breaker

Technical Field

The present application relates to the field of low voltage electrical appliances, and more particularly, to an accessory module for a circuit breaker.

Background

The circuit breaker mainly comprises a frame circuit breaker, a molded case circuit breaker and a miniature circuit breaker according to the capacity, and matched accessories of the circuit breaker also mainly comprise an over/under voltage (no-voltage) release, a shunt excitation and closing electromagnet, an electric energy storage mechanism or an electric operating mechanism and the like according to the application. With the rapid development of electronics and communication technologies, at present, a plurality of low-voltage circuit breaker products are intelligent and communicable, and the intelligent controller is used as a core component of the low-voltage circuit breaker, so that the intelligent controller is powerful in function, greatly enhances the function and performance of the circuit breaker, and facilitates the application and maintenance of users. Meanwhile, accessories matched with the circuit breaker also adopt electronic or intelligent design and are used for carrying out voltage detection and protection or remotely controlling the opening and closing of the circuit breaker.

However, in the existing application, the electronic accessories associated with the circuit breaker still exist as independent functional units, such as the existing product shown in fig. 4, an over/under voltage release, a shunt/close electromagnet, and an electric energy storage mechanism (or an electric operating mechanism), which are respectively used as independent accessories, and the accessories are often respectively designed with different power supplies, signal detection, driving circuits, trip coils or motors, etc. according to their own operating voltage levels, which causes a lot of accessory parts or accessory types and is difficult to process and manage on the manufacturing and user sides.

Meanwhile, the working state of the accessory is not monitored and indicated, no alarm is output when a potential fault exists or a fault occurs, and a user is difficult to monitor, maintain and maintain the accessory locally or remotely and is difficult to locate or troubleshoot the fault.

Moreover, mutual independence between the accessories and the circuit breaker controller does not have centralized management, so that working information between internal components of the circuit breaker system cannot form closed-loop control, for example, the circuit breaker controller cannot know whether the opening of the circuit breaker except an opening instruction sent by the controller is overvoltage or undervoltage tripping or is caused by shunt tripping, and similar conditions cause the system to have great potential safety hazards.

In addition, the existing accessories of the voltage-loss belt delay release in the market are disconnected from a power supply after voltage loss, and in order to realize the function of delay release after voltage loss, a large-capacity energy storage mechanism is often adopted, so that the release is large in size and inaccurate in delay.

Disclosure of Invention

The present application is directed to overcoming the deficiencies of the prior art and providing an integrated accessory module for an integrated circuit breaker.

In order to achieve the purpose, the following technical scheme is adopted in the application:

an accessory module of a circuit breaker comprises an action device and a monitoring device which are installed on a circuit breaker system, wherein the action device comprises an action coil module, the action coil module comprises a plurality of action coils, and the action coils are respectively used for driving a circuit breaker action mechanism of the circuit breaker system to switch on and switch off a power circuit of the circuit breaker system; the monitoring device comprises a central control module, a signal detection module, a driving module and a power supply module for respectively supplying power to the central control module, the signal detection module and the driving module, wherein the signal detection module is connected with the central control module, the signal detection module comprises an action signal conditioning circuit for detecting the working state of an action mechanism of the circuit breaker, the driving module comprises a coil driving module for supplying power to the action coil module and a motor driving module for supplying power to the energy storage mechanism, and the coil driving module and the motor driving module are respectively connected with the central control module; the central control module drives the energy storage motor through the motor driving module to enable the energy storage action mechanism to store energy for the circuit breaker action mechanism, detects whether the energy storage action mechanism completes energy storage action according to the control instruction through the action signal conditioning circuit, drives the circuit breaker action mechanism to act through the coil driving module, and detects whether the circuit breaker action mechanism acts according to the driving instruction of the coil driving module through the action signal conditioning circuit.

Preferably, the motor driving module is used for supplying power to the energy storage motor, a current sampling unit is arranged between the motor driving module and the energy storage motor, and the current sampling unit is connected with the action signal conditioning circuit and used for feeding back the power supply current of the energy storage motor.

Preferably, the action coil module includes a closing action coil and an opening action coil, the closing action coil is used for driving the circuit breaker action mechanism to close, and the opening action coil is used for driving the circuit breaker action mechanism to open according to the opening control signal or when a fault occurs in a circuit protected by the circuit breaker.

Preferably, the action coil module further comprises a protection action coil, and the protection action coil drives the breaker action mechanism to open when a circuit protected by the breaker fails.

Preferably, the signal detection module further includes a closing signal conditioning circuit and an opening signal conditioning circuit, the closing signal conditioning circuit and the opening signal conditioning circuit are respectively connected between a control power supply and a central control module of the circuit breaker system and are respectively used for transmitting a closing control signal and an opening control signal, and the central control module respectively drives the closing action coil and the opening action coil through the driving coil module according to the closing control signal and the opening control signal.

Preferably, the device also comprises a closing button and an opening button, wherein the closing button and the opening button are respectively connected to the closing signal conditioning circuit and the opening signal conditioning circuit.

Preferably, the signal detection module further comprises an isolation operational amplifier module connected with the central control module, and the isolation operational amplifier module is used for detecting an external given voltage signal.

Preferably, a power module of the monitoring device is connected with a control power supply of the circuit breaker system, and the control power supply of the circuit breaker system supplies power to the monitoring device through the power module.

Preferably, the monitoring device further comprises a human-computer interaction device connected with the central control module.

Preferably, the motor driving module takes electricity from the power supply module or the power supply module through the central control module, or the motor driving module takes electricity from a control power supply of the circuit breaker system, or the motor driving module takes electricity from an independent power supply; the coil driving module takes electricity from the power supply module or the power supply module through the central control module, or the coil driving module takes electricity from a control power supply of the circuit breaker system, or the coil driving module takes electricity from an independent power supply.

Preferably, the operating voltages of the plurality of operating coils are the same.

Preferably, the energy storage monitoring microswitch is arranged in the circuit breaker and corresponds to the energy storage action mechanism, and the action signal conditioning circuit is connected with the energy storage monitoring microswitch.

Preferably, a closing monitoring micro switch and an opening monitoring micro switch are respectively arranged at the closing position and the opening position of the circuit breaker action mechanism, and the action signal conditioning circuit is connected with the closing monitoring micro switch and the opening monitoring micro switch.

Preferably, the accessory module further comprises a communication module, and the communication module is used for connecting a remote upper computer and/or an intelligent controller of the circuit breaker.

The application still provides a circuit breaker intelligence control system, including the accessory module, the intelligent control ware of foretell circuit breaker and the magnetic flux converter of being connected with the intelligent control ware, the intelligent control ware passes through the action of magnetic flux change ware drive circuit breaker actuating mechanism according to circuit breaker short circuit or overload fault, wherein, the accessory module of circuit breaker include with the communication module of intelligent control ware communication, the power module of the accessory module of circuit breaker does the communication module power supply.

The accessory module of the circuit breaker comprises a central control module, an action coil module, a coil driving module, a motor driving module and an action signal conditioning circuit, wherein the central control module drives an energy storage motor through the motor driving module to enable an energy storage action mechanism to store energy for the circuit breaker action mechanism, and detects whether the energy storage action mechanism completes energy storage action according to a control instruction through the action signal conditioning circuit, the central control module drives the circuit breaker action mechanism to act through the coil driving module, and detects whether the circuit breaker action mechanism acts according to the driving instruction of the coil driving module through the action signal conditioning circuit, the integrated action coil module can realize the opening and closing of the circuit breaker and can be used for opening during fault, the integrated motor driving module can drive the mechanism of the circuit breaker, can unify power supply modules of the modules and can monitor whether the energy storage action mechanism stores energy or not, whether the circuit breaker actuating mechanism is switched on or switched off is monitored, the working state of the actuating device can be effectively monitored without respectively monitoring a plurality of actuating coils of the actuating device, and the circuit breaker actuating mechanism has the characteristics of simple structure, small size, convenience in assembly and low cost.

In addition, the power module takes power from a control power supply of the circuit breaker system. The power supply module can provide constant voltages with different voltage grades for the reliable work of other connected power utilization modules respectively under a wider input voltage range.

Drawings

Fig. 1 is a structural frame diagram of an accessory module of the circuit breaker of the present application;

FIG. 2 is a preferred embodiment of the monitoring device of the present application;

FIG. 3 is another preferred embodiment of the monitoring device of the present application;

figure 4 is a schematic diagram of the accessories of a prior art circuit breaker.

Detailed Description

The following description will further describe a specific embodiment of an accessory module of the circuit breaker of the present application with reference to the embodiments shown in fig. 1 to 3. The accessory module of the circuit breaker of the present application is not limited to the description of the following embodiments.

As shown in fig. 1 to 3, the accessory module of the circuit breaker of the present application includes an actuating device and a monitoring device mounted on the circuit breaker system, the actuating device includes an actuating coil module, the actuating coil module includes a plurality of actuating coils, and the plurality of actuating coils are respectively used for driving a circuit breaker actuating mechanism of the circuit breaker system to switch on and off a power circuit of the circuit breaker system; the monitoring device comprises a central control module, a signal detection module, a driving module and a power supply module for respectively supplying power to the central control module, the signal detection module and the driving module, wherein the signal detection module is connected with the central control module and comprises an action signal conditioning circuit for detecting the working state of the action mechanism of the circuit breaker; the driving module comprises a coil driving module for supplying power to the action coil module and a motor driving module for supplying power to the energy storage mechanism, and the coil driving module and the motor driving module are respectively connected with the central control module; the central control module drives the energy storage motor through the motor driving module to enable the energy storage action mechanism to store energy for the circuit breaker action mechanism, detects whether the energy storage action mechanism completes energy storage action according to the control instruction through the action signal conditioning circuit, drives the circuit breaker action mechanism to act through the coil driving module, and detects whether the circuit breaker action mechanism acts according to the driving instruction of the coil driving module through the action signal conditioning circuit.

The accessory module of the circuit breaker comprises a central control module, an action coil module, a coil driving module, a motor driving module and an action signal conditioning circuit, wherein the central control module drives an energy storage motor through the motor driving module to enable an energy storage action mechanism to store energy for the circuit breaker action mechanism, and detects whether the energy storage action mechanism completes energy storage action according to a control instruction through the action signal conditioning circuit, the central control module drives the circuit breaker action mechanism to act through the coil driving module, and detects whether the circuit breaker action mechanism acts according to the driving instruction of the coil driving module through the action signal conditioning circuit, the integrated action coil module can realize the opening and closing of the circuit breaker and can be used for opening during fault, the integrated motor driving module can drive the mechanism of the circuit breaker, can unify power supply modules of the modules and can monitor whether the energy storage action mechanism stores energy or not, whether the circuit breaker actuating mechanism is switched on or switched off is monitored, the working state of the actuating device can be effectively monitored without respectively monitoring a plurality of actuating coils of the actuating device, and the circuit breaker actuating mechanism has the characteristics of simple structure, small size, convenience in assembly and low cost. The accessory module not only can satisfy the function of current undervoltage release or shunt release/closed electro-magnet, but also sets up motor drive module, realizes energy storage control, divide closing control, installs the back on current circuit breaker, can satisfy the control requirement.

In the embodiment shown in fig. 1, the monitoring device of the accessory module of the circuit breaker further includes a communication module, and the communication module is connected with the central control module. The central control module comprises a single chip microcomputer or a microprocessor MCU, wherein the single chip microcomputer or the microprocessor MCU is a processor of the accessory module of the circuit breaker and is not a processor in an electronic controller (intelligent controller). The central control module is communicated with the intelligent controller and/or the remote upper computer through the communication module, and when a user needs to carry out non-local monitoring or system management on the circuit breaker accessory, the communication module can be used for carrying out monitoring or communication with the intelligent controller of the circuit breaker. As one of the improvement points of the application, the accessory module is provided with a communication module which can be selectively connected with the original intelligent controller of the circuit breaker through the communication module, and the accessory module is communicated with the intelligent controller or not and can match or compare the data of the accessory module and the intelligent controller.

Further, as shown in the embodiments of fig. 2-3, the energy storage mechanism includes an energy storage actuating mechanism and an energy storage motor, and the energy storage actuating mechanism is used for cooperating with the circuit breaker actuating mechanism, which is the prior art. The accessory module of the circuit breaker of this embodiment is provided with a motor driving module, and the motor driving module supplies power for the energy storage motor, and the central control module drives the energy storage motor through the motor driving module to enable the energy storage actuating mechanism to store energy for the circuit breaker actuating mechanism, and detects whether the energy storage actuating mechanism acts according to the driving instruction of the driving module through the actuating signal conditioning circuit. And a current sampling unit is also arranged between the motor driving module and the energy storage motor and is connected with the action signal conditioning circuit. As another improvement point of the application, the energy storage state signal of the energy storage action mechanism is detected through the action signal conditioning circuit, whether the energy storage action mechanism completes the energy storage action according to the control instruction is monitored, and the current sampling unit is added to detect the power supply current of the energy storage motor, so that the current and the energy storage state of the energy storage unit can be conveniently monitored. The current sampling module is arranged between the motor driving module and the energy storage motor, so that whether faults such as locked rotor and the like occur in the action process of the energy storage motor can be judged, when the faults such as locked rotor and the like occur to the motor, the current sampled by the current sampling module can change or exceed a threshold value, and the central control module monitors the working state of the energy storage motor based on the sampled current.

An embodiment of the energy storage state signal is that after the energy storage action mechanism acts in place, the on/off of the energy storage monitoring microswitch is triggered to transmit an electric signal to the action signal conditioning circuit to judge whether the energy storage motor acts in place. The energy storage monitoring microswitch is arranged in the circuit breaker and corresponds to the energy storage action mechanism, and the action signal conditioning circuit is connected with the energy storage monitoring microswitch.

Further, the coil action module comprises a plurality of action coils, and the working voltages of the action coils are the same. The working voltage of the driving module is fixed by unifying the working voltage grades of the plurality of action coils, so that the volume and the cost of the driving module can be reduced. The action coil module comprises a closing action coil and an opening action coil, the closing action coil is used for driving the breaker action mechanism to close, the opening action coil adopts the same closing action coil according to an opening control signal of a control power supply or when a circuit protected by the breaker breaks down, the coil for executing the closing action adopts the same opening action coil, and the coil for executing the opening action adopts the same opening action coil, so that the coil and matched elements can be saved, for example, an over/under voltage action coil can be omitted, and the opening action required to be executed due to line over/under voltage can be executed by means of the opening action coil. Preferably, the coil action module may further include a separate protection action coil, and the protection action coil is used for driving the circuit breaker action mechanism to open when a fault occurs in a circuit protected by the circuit breaker, for example, the protection action coil is used for executing an opening action required to be executed by over/under voltage.

The signal detection module comprises an action signal conditioning circuit used for detecting the working state of the circuit breaker action mechanism, the central control module drives the circuit breaker action mechanism to act through the coil driving module, and the action signal conditioning circuit is used for detecting whether the circuit breaker action mechanism acts according to the driving instruction of the coil driving module. When the central control module drives the circuit breaker action mechanism to act through the closing action coil to realize circuit breaker closing, the action signal conditioning circuit monitors whether the circuit breaker action mechanism completes closing or not, and when the central control module drives the circuit breaker action mechanism to act through the opening action coil to realize circuit breaker opening, the action signal conditioning circuit monitors whether the circuit breaker action mechanism completes opening or not. One embodiment is that a closing monitoring micro switch and an opening monitoring micro switch are respectively arranged at the closing position and the opening position of the breaker action mechanism, and an action signal conditioning circuit is connected with the closing monitoring micro switch and the opening monitoring micro switch; when the circuit breaker actuating mechanism rotates to a switching-on position or a switching-off position, the switching-on monitoring micro switch and the switching-off monitoring micro switch are triggered respectively, and transmit signals to the actuating signal conditioning circuit.

Furthermore, the signal detection module further comprises a closing signal conditioning circuit and an opening signal conditioning circuit, the closing signal conditioning circuit and the opening signal conditioning circuit are respectively connected with the central control module and are respectively used for transmitting closing control signals and opening control signals, and the central control module respectively drives the closing action coil and the opening action coil through the driving coil module according to the closing control signals and the opening control signals and is used for driving the circuit breaker action mechanism to execute closing and opening actions. In the embodiment of fig. 2-3, the accessory module of the circuit breaker further includes a closing button and an opening button, the closing signal conditioning circuit and the opening signal conditioning circuit are respectively connected between the control power supply and the central control module of the circuit breaker system, and the closing button and the opening button are respectively connected to the closing signal conditioning circuit and the opening signal conditioning circuit.

Further, as shown in the embodiments of fig. 2 to 3, the signal detection module further includes an isolation operational amplifier module connected to the central control module, where the isolation operational amplifier module is configured to detect an external given voltage signal, and monitor whether the voltage of the monitored circuit is overvoltage or undervoltage in real time, where the monitored circuit is a main circuit of the circuit breaker, and may also be a power module circuit or other circuits. The isolation operational amplifier module comprises an isolation circuit adopting an optical coupler and an operational amplifier circuit.

Furthermore, a power supply module of the monitoring device is connected with a control power supply of the circuit breaker system, and the control power supply of the circuit breaker system supplies power to the monitoring device through the power supply module. The power supply module can provide constant voltages with different voltage grades for the reliable work of other connected power utilization modules respectively under a wider input voltage range. For example, constant voltages of different voltage levels such as 3V, 5V, 24V, 36V, 48V and the like can be provided, and the accessory modules share one power supply module without being respectively provided, so that the size is more compact. Of course, the power module may also be connected to a separate power source, which maintains power.

Further, as another improvement point of the present application, the monitoring device further includes a human-computer interaction device connected to the central control module. The central control module can display the working states of the action device and the breaker system through the human-computer interaction device, and a user can set working parameters through the human-computer interaction device. Of course, the communication module can also be connected with a remote upper computer or an intelligent controller of the circuit breaker system in a wired or wireless mode, and the working states of the action device and the circuit breaker system are displayed through the remote upper computer or the intelligent controller, and working parameters are set.

Further, the motor driving module takes electricity from the power module, or takes electricity from the power module through the central control module, or takes electricity from the control power supply of the circuit breaker system, or takes electricity from an independent power supply. The motor driving module is kept powered by an independent power supply, so that the capacity of the energy storage mechanism can be reduced, a delay function can be realized under the condition of undervoltage, and the adjustment precision of delay time is higher.

Further, the coil driving module takes electricity from the power module, or takes electricity from the power module through the central control module, or the coil driving module takes electricity from the control power supply of the circuit breaker system, or the coil driving module takes electricity from an independent power supply.

As shown in the preferred embodiments of fig. 2-3, fig. 2 and 3 differ in that: the motor driving module in fig. 2 takes power from the power module of the monitoring device, the motor driving module in fig. 3 takes power from the control power source of the circuit breaker system, and other structures in fig. 2 and 3 are the same.

As shown in fig. 2, the accessory module of the circuit breaker of this embodiment includes an actuating device and a monitoring device installed on the circuit breaker system, the actuating device includes an actuating coil module, the actuating coil module includes a closing actuating coil and an opening actuating coil, and the actuating coil module is used for driving a circuit breaker actuating mechanism of the circuit breaker system to turn on and off a power circuit of the circuit breaker system; the monitoring device comprises a central control module, a signal detection module, a driving module and a power module for respectively supplying power to the central control module, the signal detection module and the driving module, wherein the signal detection module comprises an action signal conditioning circuit, an isolation operational amplifier module, a closing signal conditioning circuit and a switching-off signal conditioning circuit.

The driving module comprises a coil driving module for supplying power to the action coil module and a motor driving module for supplying power to the energy storage mechanism, the coil driving module and the motor driving module are respectively connected with the central control module, the central control module drives the energy storage motor through the motor driving module to enable the energy storage action mechanism to store energy for the breaker action mechanism, and the central control module drives the closing action coil and the opening action coil through the coil driving module to trigger the breaker action mechanism to act; the switching-on action coil is used for driving the breaker action mechanism to switch on, and the switching-off action coil is used for driving the breaker action mechanism to switch off according to the switching-off control signal or when a circuit protected by the breaker breaks down.

The isolation operational amplifier module is used for detecting an external given voltage signal, the central control module judges whether the power utilization circuit works normally according to the voltage signal acquired by the isolation operational amplifier module, and if the power utilization circuit has faults of undervoltage, short circuit, overload and the like, the central control module triggers the action mechanism of the circuit breaker to act through the action of the driving instruction opening action coil of the coil driving module to realize opening;

the switching-on signal conditioning circuit and the switching-off signal conditioning circuit are used for detecting signals of a control power supply, and when a user presses a switching-on button, a switching-off button or a remote control instruction, the central control module drives the switching-on coil or the switching-off coil through a driving instruction of the driving module to enable the circuit breaker action mechanism to act.

The action signal conditioning circuit is used for detecting the working state of the circuit breaker action mechanism, when the action device drives the circuit breaker action mechanism to act, the action device comprises a switch-on, a switch-off and/or an overvoltage/undervoltage switch-off, the central control module detects whether the action mechanism acts according to a driving instruction of the driving module through the action signal conditioning circuit, the action signal conditioning circuit monitors a switch state signal of the circuit breaker action mechanism, and if the circuit breaker action mechanism does not act, the fault of the action device is indicated.

Furthermore, the motor driving module supplies power to the energy storage motor through the current sampling unit, the current sampling unit and the energy storage action mechanism are respectively connected with the action signal conditioning circuit, the central control module can drive the energy storage motor through the motor driving module to enable the energy storage action mechanism to store energy for the circuit breaker action mechanism, and the action signal conditioning circuit is used for respectively detecting whether the energy storage motor and the energy storage action mechanism act according to the driving instruction of the motor driving module.

Further, the power module of the monitoring device supplies power to the monitoring device after getting power from the control power supply of the circuit breaker system, and when the motor driving module of the monitoring device is connected with the power module (fig. 2), the central control module can conduct the motor driving module, so that the power module supplies power to the motor of the energy storage mechanism through the motor driving module; when the motor driving module of the monitoring device is connected with the control power supply (figure 3), the central control module can conduct the motor driving module, so that the control power supply supplies power to the energy storage mechanism through the motor driving module. The working principle of the coil driving module is similar to that of the motor driving module, and the central control module can conduct the coil driving module, so that the power supply module supplies power to the action coil module through the coil driving module.

Furthermore, monitoring device still includes the EMC/EMI module of connection between the control power of power module and circuit breaker system, and EMC/EMI module can completely cut off outside to the electromagnetic interference outside with monitoring device self during operation, effectively promotes the stability and the reliability of system.

This application still provides a circuit breaker intelligence control system, including the accessory module of the circuit breaker of this application, intelligent control ware and the magnetic flux converter of being connected with intelligent control ware, intelligent control ware passes through the action of magnetic flux converter drive circuit breaker actuating mechanism according to circuit breaker short circuit or overload fault, wherein, the accessory module of circuit breaker include with the communication module of intelligent control ware communication, the power module of the accessory module of circuit breaker does the communication module power supply. Referring to fig. 4, the accessory module of the circuit breaker of the present application may be installed at a position corresponding to an existing under-voltage release or shunt release/closing electromagnet, and cooperates with the circuit breaker actuating mechanism in the same manner to implement closing and opening; not only can satisfy the function of current undervoltage release or shunt release/closed electro-magnet, but also set up motor drive module, realize energy storage control, divide-shut brake control, install on current circuit breaker after, can satisfy the control requirement, also can realize undervoltage, divide-shut brake control, and feed back intelligent control ware or long-range host computer with circuit breaker state control through communication module.

The working process of the circuit breaker of the embodiment is as follows:

after the action device is powered on, the power supply module converts a high-voltage signal of the control power supply into a low-voltage direct-current signal after rectification, voltage reduction and filtering, and provides a required working power supply for each functional module of the device. The EMC/EMI module can isolate external electromagnetic interference when the external internal and external devices work, and stability and reliability of the system are improved.

When the power supply of the accessory system is stable, the central control module starts power-on reset and self-check, the switch state signal of the circuit breaker action mechanism, the energy storage state signal of the energy storage mechanism, the voltage signal input by the isolation operational amplifier module, the current signal of the energy storage current sampling unit of the energy storage mechanism, the switch-on control signal and the switch-off control signal which are input by the signal conditioning module are monitored in real time, meanwhile, the man-machine interaction device is initialized, and the working state of the current system is displayed and updated in real time. The user can also set the parameters of the system through the human-computer interaction device.

The central control module can also monitor the on-off state signal of the circuit breaker action mechanism in real time through the signal conditioning module, judge whether the circuit breaker action mechanism completes switching-on or switching-off operation according to the instruction sent by the central control module, and if the circuit breaker action mechanism does not complete switching-on or switching-off operation according to the instruction, record the fault information of the switching-off action coil or the fault action coil of the switching-off action coil, and send alarm information.

When the central control module detects that the energy storage mechanism does not store energy through the signal conditioning module, the central control module sends an instruction to the motor driving module, the driving motor drives the energy storage unit to complete energy storage operation of the energy storage mechanism, the signal conditioning module monitors the energy storage state signal in real time, and the central control module sends an instruction to the motor driving module to stop driving the energy storage motor after judging whether the energy storage mechanism completes energy storage and detecting the completion of the energy storage state signal. In the energy storage process of the energy storage mechanism, the central control module can monitor the current signal and the running time input by the current sampling unit in real time through the signal conditioning module, the running state of the motor is judged, and when the motor is in a blocked state, a damaged state and other bad states, the central control module can stop driving the motor, record motor fault information and send alarm information.

When a user needs to carry out non-local monitoring or system management on the circuit breaker accessory, the communication module can be used for carrying out monitoring with a remote upper computer or carrying out communication with an intelligent circuit breaker controller, and the system management of the circuit breaker is realized. The intelligent controller of the circuit breaker drives the magnetic flux converter according to protection parameters set by a user, pushes the circuit breaker action mechanism to execute opening operation, can read out a switch state signal of the circuit breaker action mechanism from a monitoring device integrated with the circuit breaker accessory module through the communication module, judges whether the circuit breaker action mechanism completes corresponding opening operation according to an instruction, records fault information of the magnetic flux converter if the circuit breaker action mechanism does not complete closing or opening operation according to the instruction, and sends alarm information. The user can set a fault emergency switching-off function of the action coil module or the magnetic flux converter through the intelligent controller, when a fault of a switching-on action coil, a switching-off action coil or a fault action coil is detected in a monitoring device integrated with a circuit breaker accessory, fault information can be sent to the intelligent controller, the magnetic flux converter is driven to push a circuit breaker action mechanism to execute switching-off operation, fault information of the switching-on action coil, the switching-off action coil or the fault action coil is recorded, and alarm information is sent; or when the intelligent controller detects that the magnetic flux converter has faults, fault information can be sent to the breaker accessory integrated monitoring device to drive the opening action coil to act, the breaker action mechanism is pushed to execute opening operation, fault information of the magnetic flux converter is recorded, and alarm information is sent.

The foregoing is a more detailed description of the present application in connection with specific preferred embodiments and it is not intended that the present application be limited to these specific details. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.

Claims (15)

1. An accessory module for a circuit breaker, comprising: the circuit breaker comprises an action device and a monitoring device which are arranged on a circuit breaker system, wherein the action device comprises an action coil module, the action coil module comprises a plurality of action coils, and the plurality of action coils are respectively used for driving a circuit breaker action mechanism of the circuit breaker system to switch on and switch off a power circuit of the circuit breaker system;

the monitoring device comprises a central control module, a signal detection module, a driving module and a power supply module which respectively supplies power to the central control module, the signal detection module and the driving module,

the circuit breaker actuating mechanism comprises a signal detection module, a central control module, a driving module and a control module, wherein the signal detection module is connected with the central control module, the signal detection module comprises an actuating signal conditioning circuit for detecting the working state of the circuit breaker actuating mechanism, the driving module comprises a coil driving module for supplying power to an actuating coil module and a motor driving module for supplying power to an energy storage mechanism, and the coil driving module and the motor driving module are respectively connected with the central control module;

the central control module drives the energy storage motor through the motor driving module to enable the energy storage action mechanism to store energy for the circuit breaker action mechanism, detects whether the energy storage action mechanism completes energy storage action according to the control instruction through the action signal conditioning circuit, drives the circuit breaker action mechanism to act through the coil driving module, and detects whether the circuit breaker action mechanism acts according to the driving instruction of the coil driving module through the action signal conditioning circuit.

2. The accessory module of a circuit breaker as recited in claim 1, wherein: the motor driving module is used for supplying power to the energy storage motor, a current sampling unit is arranged between the motor driving module and the energy storage motor, and the current sampling unit is connected with the action signal conditioning circuit and used for feeding back the power supply current of the energy storage motor.

3. The accessory module of a circuit breaker as recited in claim 1, wherein: the action coil module comprises a closing action coil and an opening action coil, the closing action coil is used for driving the breaker action mechanism to close, and the opening action coil is used for driving the breaker action mechanism to open according to an opening control signal or when a circuit protected by the breaker breaks down.

4. The accessory module of a circuit breaker of claim 3, wherein the actuator coil module further comprises a protective actuator coil that actuates opening of a circuit breaker actuator mechanism in the event of a fault in a circuit protected by the circuit breaker.

5. The accessory module of a circuit breaker as recited in claim 3, wherein: the signal detection module further comprises a closing signal conditioning circuit and an opening signal conditioning circuit, the closing signal conditioning circuit and the opening signal conditioning circuit are respectively connected between a control power supply and a central control module of the circuit breaker system and are respectively used for transmitting closing control signals and opening control signals, and the central control module respectively drives the closing action coil and the opening action coil through the driving coil module according to the closing control signals and the opening control signals.

6. The accessory module of a circuit breaker as recited in claim 5, wherein: the switching-on and switching-off device further comprises a switching-on button and a switching-off button, wherein the switching-on button and the switching-off button are respectively connected to the switching-on signal conditioning circuit and the switching-off signal conditioning circuit.

7. The accessory module of a circuit breaker as recited in claim 1, wherein: the signal detection module further comprises an isolation operational amplifier module connected with the central control module, and the isolation operational amplifier module is used for detecting an external given voltage signal.

8. The accessory module of a circuit breaker as recited in claim 1, wherein: the power module of the monitoring device is connected with the control power supply of the circuit breaker system, and the control power supply of the circuit breaker system supplies power to the monitoring device through the power module.

9. The accessory module of a circuit breaker as recited in claim 1, wherein: the monitoring device also comprises a man-machine interaction device connected with the central control module.

10. The accessory module of a circuit breaker as recited in claim 1, wherein: the motor driving module takes electricity from the power supply module or the power supply module through the central control module, or the motor driving module takes electricity from a control power supply of the circuit breaker system, or the motor driving module takes electricity from an independent power supply; the coil driving module takes electricity from the power supply module or the power supply module through the central control module, or the coil driving module takes electricity from a control power supply of the circuit breaker system, or the coil driving module takes electricity from an independent power supply.

11. The accessory module of a circuit breaker as recited in claim 1, wherein: the operating voltages of the plurality of action coils are the same.

12. The accessory module of a circuit breaker as recited in claim 1, wherein: the energy storage monitoring microswitch is arranged in the circuit breaker and corresponds to the energy storage action mechanism, and the action signal conditioning circuit is connected with the energy storage monitoring microswitch.

13. The accessory module of a circuit breaker as recited in claim 3, wherein: and a switching-on monitoring microswitch and a switching-off monitoring microswitch are respectively arranged at the switching-on position and the switching-off position of the circuit breaker action mechanism, and the action signal conditioning circuit is connected with the switching-on monitoring microswitch and the switching-off monitoring microswitch.

14. The accessory module of the circuit breaker of claim 1, further comprising a communication module for connecting a remote host computer and or a smart controller of the circuit breaker.

15. An intelligent control system of a circuit breaker, comprising an accessory module of the circuit breaker, an intelligent controller and a magnetic flux converter connected with the intelligent controller according to any one of claims 1 to 13, wherein the intelligent controller drives an action mechanism of the circuit breaker to act through the magnetic flux converter according to a short circuit or an overload fault of the circuit breaker, the accessory module of the circuit breaker comprises a communication module communicated with the intelligent controller, and a power module of the accessory module of the circuit breaker supplies power to the communication module.

Images