An automated circuit breaker power supply system and method of performing the same

Abstract

The application discloses an automatic circuit breaker power supply system and an execution method thereof, which comprises a double power switcher, receives AC input of a PT, and electrically connects an intermediate relay to other loads; an inverter circuit board is electrically connected to a storage battery group and to other loads; the double power switcher and the inverter circuit board are electrically connected through a power module. In normal times, the PT outputs AC power to required loads; when power is cut off, the power supply system is switched, and the storage battery group supplies power to the loads through the inverter circuit board; the state of the power supply system is judged and controlled through the intermediate relay. The application solves the replacement problem of the old controller of power distribution automation, improves the feasibility of power distribution network planning, improves the reliable operation of power distribution automation equipment, solves the problem of compatibility of the new control box with the old circuit breaker based on the secondary wiring principle.

Description

Technical Field

[0001] This invention relates to the field of fire safety, and in particular to an automated circuit breaker power supply system and its execution method. Background Technology

[0002] Currently, the service life of primary equipment (circuit breakers and voltage transformers) in 10kV pole-mounted switchgear automation systems for power distribution networks is generally 15 years, while the service life of controllers is generally 6 years. When older controllers malfunction or their functions fail to meet requirements, replacement requires replacing the entire system, which incurs significant costs and power outages.

[0003] Many older automated equipment systems have circuit breaker operating voltages of AC220V and energy storage circuits of AC220V. However, current regulations stipulate that the rated voltage of the circuit breaker operating mechanism for automated equipment systems is uniformly DC24V. Due to these different parameter standards, new controllers from other manufacturers are incompatible with the circuit breakers of older automated equipment systems. Therefore, it is necessary to independently adjust the power supply system modules to provide a backup power source for the circuit breakers, and a reasonable and safe operating procedure is required to match the compatible system. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this section, the abstract and title of the invention. Such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the fact that many older automated complete sets of equipment have circuit breaker operating voltages of AC220V and energy storage circuits of AC220V, while the current standard specifies that the rated voltage of the circuit breaker operating mechanism of automated complete sets of equipment is uniformly DC24V, the present invention is proposed because the different parameter standards lead to the problem that new controllers from other manufacturers are not compatible with the circuit breakers of older automated complete sets of equipment.

[0006] Therefore, the technical problem to be solved by the present invention is the need to independently adjust the modules of the power supply system to provide a new type of backup power source for the circuit breaker.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an automatic circuit breaker power supply system, comprising a dual power switch, receiving the AC input of a PT, and electrically connecting an intermediate relay to other loads;

[0008] The inverter circuit board is electrically connected to the battery pack and other loads;

[0009] The dual power switcher is electrically connected to the inverter circuit board via a power module.

[0010] In a preferred embodiment of the automatic circuit breaker power supply system of the present invention, the power module converts AC power into DC power through rectification and filtering circuits, and supplies the battery pack and the inverter circuit board.

[0011] As a preferred embodiment of the automated circuit breaker power supply system of the present invention, the power supply module is electrically connected to a protection device to monitor the system current and voltage;

[0012] The protection device is also electrically connected to a control circuit as the main load of the power supply system;

[0013] The control circuit includes a tripping output, a closing output, and an energy storage power supply.

[0014] As a preferred embodiment of the automatic circuit breaker power supply system of the present invention, the intermediate relay is electrically connected to the inverter circuit board through a normally closed point;

[0015] The intermediate relay is electrically connected to the AC output of the dual power supply switch via a normally open contact.

[0016] As a preferred embodiment of the automated circuit breaker power supply system of the present invention, the intermediate relay is electrically connected to an energy storage motor;

[0017] The energy storage motor provides power for remote signaling operations through the closing coil HQ and the opening coil TQ.

[0018] The remote control board is electrically connected to the closing coil HQ and the opening coil TQ, and pressure plates -1LP1 and -2LP2 are respectively provided on the line.

[0019] The beneficial effects of this invention are: it solves the problem of replacing old controllers in power distribution automation and improves the feasibility of power distribution network planning.

[0020] Because of different parameter standards, the new controllers from other manufacturers are not compatible with the circuit breakers of the old automated complete sets of equipment, and the operating modes are also completely different. A completely new system and a completely new execution mode are required to match the needs of power system switching.

[0021] Therefore, the technical problem to be solved by this invention is the need for a reasonable and safe operation method to match the compatible system.

[0022] To solve the above-mentioned technical problems, the present invention also provides the following technical solution: an automatic circuit breaker power supply system execution method, including the aforementioned automatic circuit breaker power supply system, wherein, under normal conditions, the PT outputs AC power to the required load;

[0023] In the event of a power outage, the power supply system is switched, and the battery pack supplies power to the load through the inverter circuit board.

[0024] The status of the power supply system is determined and controlled by intermediate relays.

[0025] As a preferred embodiment of the automatic circuit breaker power supply system execution method of the present invention, wherein: the PT converts the 10kV voltage to AC220V and inputs it to the dual power supply switch;

[0026] The power module charges the battery and provides remote signaling power to the DC circuit;

[0027] The dual power switch detects that the main power supply is normal and outputs it to the control loop and power module.

[0028] The intermediate relay is connected through a normally open contact, allowing AC220V to power the control circuit.

[0029] As a preferred embodiment of the automatic circuit breaker power supply system execution method of the present invention, wherein: when the PT loses power, the dual power switch detects the failure of the main power supply;

[0030] The dual power switch switches to the backup power supply, and the battery begins to discharge, providing DC24V power to the inverter circuit board.

[0031] The inverter circuit board converts DC24V to AC220V and outputs it to the normally closed contact of the intermediate relay.

[0032] When the normally closed contact of the intermediate relay is closed, the AC220V output from the inverter circuit board is introduced into the control circuit.

[0033] As a preferred embodiment of the automatic circuit breaker power supply system execution method described in this invention, wherein: in the event of a power outage,

[0034] The normally open contact of the intermediate relay is open, and the normally closed contact is closed, allowing the AC220V output from the inverter circuit board to power the control circuit.

[0035] The system continues to operate even when the power is off, and the remote control sends fault alarm information.

[0036] As a preferred embodiment of the automatic circuit breaker power supply system execution method of the present invention, when a closing command is received, the remote control board starts the energy storage motor to begin energy storage;

[0037] Once the preset pressure value is reached, the energy storage motor stops working, and the system enters the ready state.

[0038] When the trip command is received again, the remote control panel triggers the corresponding solenoid valve to release pressure, causing the circuit breaker to open.

[0039] The beneficial effects of this invention are: improving the reliable operation of power distribution automation equipment, and solving the problem of compatibility between new control boxes and old circuit breakers based on the secondary wiring principle. Attached Figure Description

[0040] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0041] Figure 1 This is a schematic diagram of the structure of an automated circuit breaker power supply system according to one embodiment of the present invention;

[0042] Figure 2 A schematic diagram of the normal operation of an automated circuit breaker power supply system according to an embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram illustrating the operation of an automated circuit breaker power supply system under power failure conditions, as provided in one embodiment of the present invention. Detailed Implementation

[0044] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0045] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0046] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure will be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0047] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0048] Example 1

[0049] Reference Figure 1 This embodiment provides an automated circuit breaker power supply system, including a dual power switch that receives the AC input of a PT and electrically connects an intermediate relay to other loads;

[0050] The inverter circuit board is electrically connected to the battery pack and other loads;

[0051] The dual power switcher and inverter circuit board are electrically connected via a power module.

[0052] The primary purpose of this circuit system is to function as an uninterruptible power supply (UPS). It automatically switches to another power source when one power source fails, ensuring continuous power supply to the load equipment. These components work together to ensure uninterrupted power supply even in the event of a main power failure.

[0053] Example 2

[0054] Reference Figures 1-3 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the previous embodiment in that: the power module converts AC power into DC power through rectification and filtering circuits, and supplies the battery pack and inverter circuit board.

[0055] The power module is electrically connected to a protection device that monitors the system current and voltage. The protection device monitors the current and voltage in the circuit, and will take immediate action, such as blowing the fuse or triggering the circuit breaker to trip, once it detects an abnormality that exceeds the set value, thereby protecting the safety of the entire system and equipment.

[0056] The protection device is electrically connected to a control circuit that serves as the main load of the power supply system.

[0057] The control circuit includes a tripping output, a closing output, and an energy storage power supply, which are used to provide execution signals corresponding to the feedback from the tripping and closing coils, respectively. The energy storage power supply is the power source.

[0058] Starting from the input terminal, the PT AC input is 220V, which is the power source for the entire system. The dual power switch automatically switches between the main power supply and the backup power supply to ensure the continuity of control. When the main power supply encounters a problem, such as a voltage drop or complete failure, the dual power switch will transfer the load to the backup power supply.

[0059] The inverter circuit board is responsible for converting DC power (DC24V) to AC power (AC220V) when the main power supply fails. This is to maintain power to the control circuit and ensure the system can continue to operate. In this process, the lead-acid battery pack plays a crucial role, storing energy and releasing it when necessary to provide the required DC power to the inverter circuit board.

[0060] Example 3

[0061] Reference Figures 1-3 This is the third embodiment of the present invention. This embodiment is based on the previous embodiment, and the difference from the previous embodiment is that: the intermediate relay is electrically connected to the inverter circuit board through a normally closed point;

[0062] The intermediate relay is electrically connected to the AC output of the dual power supply switch via its normally open contact.

[0063] The intermediate relay is electrically connected to an energy storage motor;

[0064] The energy storage motor provides power for remote signaling operations through the closing coil HQ and the opening coil TQ;

[0065] The remote control board is electrically connected to the closing coil HQ and the opening coil TQ, and pressure plates -1LP1 and -2LP2 are respectively installed on the line.

[0066] Intermediate relays are an important component of this system. They are used to control the on / off state of circuits in AC and DC circuits, thereby achieving circuit protection and control. When the system detects abnormal conditions, such as overload or short circuit, AC / DC relays will quickly activate to disconnect the circuit and prevent damage to equipment and impact on system stability.

[0067] The opening and closing coils HQ and TQ are connected to the remote control panel by pressure plates -1LP1 and -1LP2. When the pressure plates are removed, the opening and closing circuit is disconnected, making it impossible to operate through the control box and facilitating maintenance.

[0068] In detail, due to the main power failure, the normally open contact of the intermediate relay opens, and the normally closed contact closes. This allows the AC220V output from the inverter circuit board to power the control circuit. The normally closed contact then connects, introducing the AC220V output from the inverter circuit board into the control circuit. This enables rapid current switching and ensures continuous power supply to the control circuit.

[0069] Example 4

[0070] Reference Figures 1-3 This is the fourth embodiment of the present invention. This embodiment provides an execution method for an automated circuit breaker power supply system. This embodiment is based on the previous embodiment, and the difference from the previous embodiment is that: under normal conditions, the PT outputs AC power to the required load;

[0071] In the event of a power outage, the power supply system is switched, and the battery pack supplies power to the load through the inverter circuit board.

[0072] The status of the power supply system is determined and controlled by intermediate relays.

[0073] The system continuously monitors the status of the main power supply. If the main power supply is working normally, it directly supplies power to the control circuit. However, if the main power supply fails, the dual power switch will immediately intervene and transfer the load to the backup power supply. At this time, the inverter circuit board will activate, using the DC power provided by the lead-acid battery to generate AC power, continuing to supply power to the control circuit.

[0074] Example 5

[0075] Reference Figures 1-3 This is the fifth embodiment of the present invention. This embodiment is based on the previous embodiment, and the difference from the previous embodiment is that: the PT converts the 10kV voltage to AC220V and inputs it to the dual power supply switch.

[0076] The power module charges the battery and provides remote signaling power to the DC circuit;

[0077] The dual power switch detects that the main power supply is normal and outputs it to the control loop and power module.

[0078] The intermediate relay is connected through a normally open contact, allowing AC220V to power the control circuit.

[0079] Under normal conditions, the system prioritizes the main power supply as the primary energy source. This is because the main power supply typically offers higher stability and reliability. Simultaneously, the system regularly inspects and maintains the backup power supply to ensure it can smoothly take over power supply tasks in critical moments.

[0080] Example 6

[0081] Reference Figures 1-3 This is the sixth embodiment of the present invention. This embodiment is based on the previous embodiment, and the difference from the previous embodiment is that: the PT loses power and the dual power switch detects the failure of the main power supply.

[0082] The dual power switch switches to the backup power supply, and the battery begins to discharge, providing DC24V power to the inverter circuit board.

[0083] The inverter circuit board converts DC24V to AC220V and outputs it to the normally closed contact of the intermediate relay.

[0084] When the normally closed contact of the intermediate relay is closed, the AC220V output from the inverter circuit board is introduced into the control circuit.

[0085] In the event of a power outage,

[0086] The normally open contact of the intermediate relay is open, and the normally closed contact is closed, allowing the AC220V output from the inverter circuit board to power the control circuit.

[0087] The system continues to operate even when the power is off, and the remote control sends fault alarm information.

[0088] In the event of a power outage, the system enters emergency mode. At this time, the dual power switch automatically switches to the backup power supply, and the inverter circuit board begins operating, converting the DC power from the lead-acid battery into AC power. This design ensures that the system can maintain basic operational requirements even without an external power source. It also enables alarm activation.

[0089] Example 7

[0090] Reference Figures 1-3 This is the seventh embodiment of the present invention. This embodiment is based on the previous embodiment, and differs from the previous embodiment in that: when a closing command is received, the remote control board starts the energy storage motor to begin energy storage;

[0091] Once the preset pressure value is reached, the energy storage motor stops working, and the system enters the ready state.

[0092] When the trip command is received again, the remote control panel triggers the corresponding solenoid valve to release pressure, causing the circuit breaker to open.

[0093] The equipment is equipped with two normally open buttons for manual tripping and manual closing. When pressed, the circuit is connected to the remote signaling system and sent to the main board. After the main board detects the remote signaling system, it issues a tripping or closing command, which triggers the circuit breaker coil to operate, causing the switch to trip or close.

[0094] In detail, the switch cable only serves as a medium between the control box and the circuit breaker. The energy storage motor and the intermediate relay are connected. During normal operation, the AC output is directly supplied to the intermediate relay and then to the energy storage motor. Only when the power is off is the battery output supplied. There is a priority system. When the line is de-energized, the battery will discharge after it has not been charged.

[0095] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0096] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0097] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0098] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An automated circuit breaker power supply system, characterized in that: include, Dual power supply switcher receives AC input from PT and electrically connects intermediate relays to other loads; The inverter circuit board receives the DC input from the battery pack and electrically connects the intermediate relay to other loads; The dual power switcher is electrically connected to the inverter circuit board via a power module; The power module converts AC power into DC power through rectification and filtering circuits, and supplies it to the battery pack and the inverter circuit board. The power module is electrically connected to a protection device that monitors the system current and voltage; The protection device is also electrically connected to a control circuit as the main load of the power supply system; The control circuit includes a tripping output, a closing output, and an energy storage power supply; The intermediate relay is electrically connected to the inverter circuit board via a normally closed contact. The intermediate relay is electrically connected to the AC output of the dual power supply switch via a normally open contact; The intermediate relay is electrically connected to an energy storage motor; The energy storage motor provides power for remote signaling operations through the closing coil HQ and the opening coil TQ. The remote control board is electrically connected to the closing coil HQ and the opening coil TQ; A pressure plate -1LP1 is installed on the line between the remote control board and the closing coil HQ, and a pressure plate -2LP2 is installed on the line between the remote control board and the opening coil TQ.

2. An execution method for an automated circuit breaker power supply system, characterized in that: Including the automated circuit breaker power supply system as described in claim 1, and, Under normal conditions, the PT outputs AC power to the required load; In the event of a power outage, the power supply system is switched, and the battery pack supplies power to the load through the inverter circuit board. The status of the power supply system is determined and controlled by intermediate relays; The PT converts 10kV voltage to AC220V and inputs it to the dual power supply switch. The power module charges the battery and provides remote signaling power to the DC circuit; The dual power switch detects that the main power supply is normal and outputs it to the control loop and power module. The intermediate relay is connected through a normally open contact, allowing AC220V to power the control circuit. The power supply PT lost power, and the dual power switch detected a main power failure. The dual power switch switches to the backup power supply, and the battery begins to discharge, providing DC24V power to the inverter circuit board. The inverter circuit board converts DC24V to AC220V and outputs it to the normally closed contact of the intermediate relay. When the normally closed contact of the intermediate relay is closed, the AC220V output from the inverter circuit board is introduced into the control circuit. In the event of a power outage, The normally open contact of the intermediate relay is open, and the normally closed contact is closed, allowing the AC220V output from the inverter circuit board to power the control circuit. The system continues to operate even when the power is off, and the remote control board sends fault alarm information; When the closing command is received, the remote control board starts the energy storage motor to begin storing energy; Once the preset pressure value is reached, the energy storage motor stops working, and the system enters the ready state. When the trip command is received again, the remote control panel triggers the corresponding solenoid valve to release pressure, causing the circuit breaker to open.

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