Analog circuit breaker device

Abstract

The application provides a kind of analog circuit breaker device, belongs to power system regulation technical field.The method includes: multiple groups of one-to-one opening and closing operation components, relays, wiring ports and control circuits.The opening and closing operation components respond to trigger to generate opening or closing instructions;The control circuit is connected with the relay coil through the operation component, sends a pulse to the coil when receiving the opening instruction, makes the relay act, and turns on the first loop formed by connecting the external relay protection device to be tested and the normally closed contact through the wiring port;When receiving the closing instruction, a pulse is sent to turn on the second loop formed by connecting the external test device and the normally open contact through the wiring port.The application supports multiple relay protection devices parallel opening and closing simulation test through multiple independent modular isolation channels and pulse trigger design, single-channel failure does not affect overall operation, and has low power consumption and long service life.

Description

Technical Field

[0001] This invention relates to the field of power system commissioning technology, and more specifically to a simulated circuit breaker device. Background Technology

[0002] During the commissioning and maintenance of power system relay protection devices, simulated circuit breaker devices are needed to replace real high-voltage circuit breakers on site, providing open and closed position feedback signals to the device under test and constructing a closed-loop test circuit. With the increasing automation of the power grid, relay protection devices need to simultaneously access multiple circuit breaker position signals to verify complex logical coordination relationships, which requires the simulation device to have multiple independent output capabilities. However, in actual substation testing sites, due to the lack of highly integrated multi-channel independent simulation equipment, commissioning personnel often face problems such as messy wiring, loop interference, and distorted state simulation, affecting the accuracy of testing and operational efficiency.

[0003] Currently, existing technologies typically employ two methods: one is to use multiple single-channel analog circuit breaker devices stacked together and connected to different circuits of the device under test; the other is to use a single device with integrated multi-output contacts, which drives each group of relays uniformly or in a polling manner through a common control unit (2). The above schemes have, to a certain extent, realized the analog feedback function of multi-channel signals.

[0004] However, the existing technology has the following problems: (1) In the existing stacking scheme, each device is prone to electrical crosstalk due to common ground or wiring coupling; in the multi-channel integration scheme, the control circuits of each channel are not completely independent in electrical terms, and a fault in one circuit can easily affect other circuits, threatening equipment and personal safety; (2) In the existing technology, each output channel is mostly controlled by unified logic, and it is impossible for the commissioning personnel to independently and immediately perform opening and closing operations on specific channels, making it difficult to flexibly reproduce the complex timing scenarios of asynchronous operation of different circuit breakers in the power system, which limits the depth of verification of the logic reliability of the protection device; (3) The stacking method results in a large number of field devices and messy wiring, which is prone to misconnection; the multi-channel integration scheme relies more on software configuration and menu operation, and the panel status is not intuitively corresponding to the actual channel, which cannot achieve a "what you see is what you get" fast response, affecting the on-site commissioning progress; (4) The control motherboard or power supply (5) module of the existing device is usually a common part, and once it fails, all channels will fail. Even if only a single relay (2) is damaged, due to the highly integrated circuit design, the whole machine needs to be shut down for maintenance, which is costly and affects the normal use of other channels, resulting in insufficient availability. Summary of the Invention

[0005] The purpose of this invention is to provide a simulated circuit breaker device to solve the above-mentioned problems.

[0006] To achieve the above objectives, embodiments of the present invention provide a simulated circuit breaker device, comprising: multiple opening and closing operation components, each of which is used to generate an opening command or a closing command in response to a user's trigger operation; multiple relays, each corresponding to one of the opening and closing operation components; multiple wiring ports, each corresponding to one of the opening and closing operation components, each wiring port being used to connect an external test relay protection device to the normally closed contact of the corresponding relay to form a first circuit, and to connect an external test device to the normally open contact of the corresponding relay to form a second circuit; and multiple control circuits, each corresponding to one of the opening and closing operation components, each control circuit forming a circuit through the coil of the corresponding opening and closing operation component and the corresponding relay, each control circuit being used to apply a pulse signal to the coil of the corresponding relay when receiving an opening command generated by the corresponding opening and closing operation component, so as to control the first circuit to conduct through the relay; or to apply a pulse signal to the coil of the corresponding relay when receiving a closing command generated by the corresponding opening and closing operation component, so as to control the second circuit to conduct through the relay.

[0007] Optionally, the tripping and closing operation components include: a tripping operation component and a closing operation component; each control circuit forms a circuit with the coil of the corresponding relay through the corresponding tripping and closing operation components; the tripping operation component is used to respond to the user's trigger operation and generate a tripping command; the closing operation component is used to respond to the user's trigger operation and generate a closing command.

[0008] Optionally, the simulated circuit breaker device also includes: a power supply and multiple dual-color LEDs; each dual-color LED corresponds to a tripping or closing operation component, and the dual-color LEDs form a power supply circuit with the power supply through the normally closed or normally open contacts of the corresponding relays; each control circuit forms a power supply circuit with the power supply; the power supply is used to provide operating current to the multiple control circuits and the multiple dual-color LEDs; the dual-color LEDs are used to emit green light when the first circuit is conducting or red light when the second circuit is conducting.

[0009] Optionally, the relay includes: a tripping coil, a closing coil, and a common contact; the positive terminal of the power supply is electrically connected to the power input terminal of the control circuit and one end of the common contact of the relay, respectively; the first command input terminal of the control circuit is electrically connected to the tripping operation component; the second command input terminal of the control circuit is electrically connected to the closing operation component; the first pulse signal output terminal of the control circuit is electrically connected to one end of the tripping coil of the relay; the second pulse signal output terminal of the control circuit is electrically connected to one end of the closing coil of the relay; the other end of the tripping coil of the relay is electrically connected to the first pulse signal return terminal of the control circuit; and the other end of the closing coil of the relay is connected to the second pulse signal return terminal of the control circuit. Electrically connected, one end of the relay's common contact is connected to either the relay's normally closed or normally open contact. The other end of the relay's normally closed contact is electrically connected to the positive terminal of the first LED chip of the dual-color LED. The other end of the relay's normally open contact is electrically connected to the positive terminal of the second LED chip of the dual-color LED. The negative terminals of the first and second LED chips of the dual-color LED, as well as the negative terminal of the power supply of the control circuit, are electrically connected to the negative terminal of the power supply. The other end of the relay's common contact is also electrically connected to the common terminal of the wiring port. The other end of the relay's normally closed contact is also electrically connected to the normally closed terminal of the wiring port. The other end of the relay's normally open contact is also electrically connected to the normally open terminal of the wiring port.

[0010] Optionally, the control circuit, upon receiving a tripping command generated by the corresponding tripping operation component, applies a pulse signal to the tripping coil of the relay, causing the tripping coil of the relay to be momentarily energized, thereby controlling the common contact of the relay to conduct with the normally closed contact, causing the first light-emitting chip of the dual-color LED to emit green light and enabling the first circuit to conduct; or, upon receiving a closing command generated by the corresponding closing operation component, applies a pulse signal to the closing coil of the relay, causing the closing coil of the relay to be momentarily energized, thereby controlling the common contact of the relay to conduct with the normally open contact, causing the second light-emitting chip of the dual-color LED to emit red light and enabling the second circuit to conduct.

[0011] Optionally, the simulated circuit breaker device further includes: a housing; multiple opening and closing operation components and multiple dual-color LEDs disposed on the surface of the housing, each dual-color LED being adjacent to the corresponding opening and closing operation component; multiple relays and multiple control circuits disposed inside the housing; and multiple wiring ports disposed on the side of the housing.

[0012] Optionally, a double-layer circuit board is provided inside the housing, with the relay and control circuit arranged on the double-layer circuit board in layers.

[0013] Optionally, the inner wall of the housing is provided with multiple slots, each corresponding to a multiple control circuit, and each control circuit is fixed inside the housing through the corresponding slot.

[0014] Optionally, the long side of the housing shall not exceed 130 mm, the wide side of the housing shall not exceed 100 mm, and the apex of the housing shall be chamfered.

[0015] Optionally, the simulated circuit breaker device further includes: a wireless communication module, which is communicatively connected to an external mobile terminal; the wireless communication module is used to receive delay configuration parameters sent by the external mobile terminal; each control circuit is also used to, upon receiving a tripping command generated by the corresponding tripping and closing operation component, apply a pulse signal to the coil of the corresponding relay after a preset delay according to the delay configuration parameters, so as to control the first circuit to conduct through the relay; or upon receiving a closing command generated by the corresponding tripping and closing operation component, apply a pulse signal to the coil of the corresponding relay after a preset delay according to the delay configuration parameters, so as to control the second circuit to conduct through the relay.

[0016] In this embodiment of the invention, multiple modular isolation channels are formed by independently designing the opening and closing operation components, control circuits, and relays in a one-to-one correspondence. Based on this circuit structure, each channel can simulate various opening and closing combinations of different circuit breakers, and can simultaneously conduct opening and closing simulation tests on multiple external relay protection devices, significantly improving testing efficiency. Simultaneously, the modular isolation design ensures that if a single channel fails, only that channel needs to be repaired or replaced, without affecting the normal use of other channels, resulting in low maintenance costs and high overall equipment availability. Furthermore, the control circuit uses pulse signals to trigger the relay coils, avoiding prolonged energized operation of the relay coils, reducing power consumption and heat generation, and extending the device's lifespan.

[0017] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is an electrical schematic diagram of the simulated circuit breaker device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the simulated circuit breaker device provided in an embodiment of the present invention.

[0019] Figure Labels 1-Opening and closing operation components; 2-Relay; 3-Wiring port; 4-Control circuit; 5-Power supply; 6-Dual-color LED light; 7-Housing; 11-Opening operation component; 12-Closing operation component. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0022] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0023] Example 1 like Figure 1 As shown, Figure 1 This is an electrical schematic diagram of a simulated circuit breaker device provided in an embodiment of the present invention. The device includes: multiple opening and closing operation components 1, each of which is used to generate an opening command or a closing command in response to a user's trigger operation; multiple relays 2, each corresponding to one of the opening and closing operation components 1; multiple wiring ports 3, each corresponding to one of the opening and closing operation components 1, each wiring port 3 being used to connect an external test relay protection device to the normally closed contact of the corresponding relay 2 to form a first circuit, and to connect an external test device to the normally open contact of the corresponding relay 2 to form a second circuit; and multiple control circuits 4, each corresponding to one of the opening and closing operation components 1, each control circuit 4 forming a circuit through the coil of the corresponding opening and closing operation component 1 and the corresponding relay 2. Each control circuit 4 is used to apply a pulse signal to the coil of the corresponding relay 2 when receiving an opening command generated by the corresponding opening and closing operation component 1, so as to control the first circuit to conduct through the relay 2; or to apply a pulse signal to the coil of the corresponding relay 2 when receiving a closing command generated by the corresponding opening and closing operation component 1, so as to control the second circuit to conduct through the relay 2.

[0024] Specifically, the tripping and closing operation component 1 refers to the input element through which the user interacts with the simulated circuit breaker device. It can take the form of a push-button self-reset button, a toggle switch, or a touch button, and is used to convert the user's operation into an electrical signal to generate tripping or closing commands.

[0025] Specifically, relay 2 is an electrically controlled switching device that internally includes a coil and a group of contacts. In this embodiment, a magnetic latching relay is preferably used, which has a tripping coil and a closing coil. Together with a permanent magnet latching mechanism, it can switch the contact state under pulse signal excitation and maintain the state after power failure without the need for continuous power supply.

[0026] Specifically, the control circuit 4 is a signal processing and driving unit built with a microcontroller (MCU) or dedicated logic circuit as its core. It is used to receive the instruction signal generated by the opening and closing operation component 1, and output a short pulse drive signal to the corresponding coil of the relay 2 when the conditions are met, thereby controlling the state switching of the relay 2.

[0027] A pulse signal is a voltage or current pulse with a very short duration, such as a positive pulse with a width of 50 milliseconds. It only energizes the relay coil momentarily, and the coil is de-energized after the contact state is switched, so there is no need for continuous power supply, thereby reducing power consumption.

[0028] The "first circuit" is a circuit that simulates the tripping state, that is, it connects the external relay protection device and the normally closed contact of the relay through the wiring port.

[0029] The "second circuit" is a circuit that simulates the closed state and connects the external test device to the normally open contact of the relay.

[0030] Each opening and closing operation component, relay, wiring port, and control circuit forms an independent channel. Multiple channels are isolated from each other and can simultaneously simulate the opening or closing states of different circuits.

[0031] In this embodiment of the invention, multiple modular isolation channels are formed by independently designing the opening and closing operation component 1, the control circuit 4, and the relay 2 in a one-to-one correspondence. Based on this circuit structure, each channel can simulate various opening and closing combinations of different circuit breakers, and can simultaneously conduct opening and closing simulation tests on multiple external relay protection devices, significantly improving testing efficiency. Simultaneously, the modular isolation design ensures that if a single channel fails, only that channel needs to be repaired or replaced, without affecting the normal use of other channels, resulting in low maintenance costs and high overall equipment availability. Furthermore, the control circuit 4 uses a pulse signal to trigger the coil of the relay 2, avoiding long-term energized operation of the relay 2 coil, reducing power consumption and heat generation, and extending the service life of the device.

[0032] In one embodiment, such as Figure 1As shown, the tripping and closing operation component 1 includes: tripping operation component 11 and closing operation component 12; each control circuit 4 forms a circuit with the coil of the corresponding relay 2 through the corresponding tripping operation component 11 and closing operation component 12; the tripping operation component 11 is used to respond to the user's trigger operation and generate a tripping command; the closing operation component 12 is used to respond to the user's trigger operation and generate a closing command.

[0033] In one embodiment, such as Figure 1 As shown, the simulated circuit breaker device also includes: a power supply 5 and multiple dual-color LEDs 6; each dual-color LED 6 corresponds to a tripping or closing operation component 1, and each dual-color LED 6 forms a power supply circuit with the power supply 5 through either the normally closed or normally open contact of the corresponding relay 2. Each control circuit 4 forms a power supply circuit with the power supply 5; the power supply 5 is used to provide operating current to the multiple control circuits 4 and the multiple dual-color LEDs 6; the dual-color LEDs 6 are used to emit green light when the first circuit is conducting or red light when the second circuit is conducting.

[0034] Specifically, there is no common ground electrical connection between different control circuits 4, and the power supply 5 provides independent power to each control circuit 4 through an isolated DC-DC power module; or the different control circuits 4 transmit signals through optocoupler isolation devices, thereby physically blocking the current path between different control circuits 4.

[0035] Specifically, the dual-color LED light 6 adopts a common cathode packaging structure and is set up next to the corresponding channel's open and close buttons, forming an intuitive interactive unit that integrates "operation + indication". Debugging personnel can quickly confirm the real-time open and close status of each channel through the LED light color without the need for additional testing equipment.

[0036] In this embodiment, a dual-color LED light 6 is used to correspond one-to-one with each channel, and the red and green colors are used to intuitively distinguish the open and closed states. The commissioning personnel can quickly visually confirm the working status of each channel without the need for additional testing tools, thus improving the efficiency of on-site commissioning. The independent power supply and electrical isolation design of each channel completely avoids loop crosstalk and ensures test safety and signal accuracy.

[0037] In one embodiment, such as Figure 1As shown, relay 2 includes: a tripping coil, a closing coil, and a common contact; the positive terminal of power supply 5 is electrically connected to the power input terminal of control circuit 4 and one end of the common contact of relay 2; the first command input terminal of control circuit 4 is electrically connected to tripping operation component 11; the second command input terminal of control circuit 4 is electrically connected to closing operation component 12; the first pulse signal output terminal of control circuit 4 is electrically connected to one end of the tripping coil of relay 2; the second pulse signal output terminal of control circuit 4 is electrically connected to one end of the closing coil of relay 2; the other end of the tripping coil of relay 2 is electrically connected to the first pulse signal return terminal of control circuit 4; the other end of the closing coil of relay 2 is electrically connected to the second pulse signal return terminal of control circuit 4; one of the other ends of the common contact of relay 2 is selectively connected to either the normally closed contact or the normally open contact of relay 2; the other end of the normally closed contact of relay 2 is electrically connected to the positive terminal of the first light-emitting chip of dual-color LED lamp 6; the other end of the normally open contact of relay 2 is electrically connected to the positive terminal of the second light-emitting chip of dual-color LED lamp 6; the dual-color... The negative terminals of the first and second light-emitting chips of LED 6, as well as the negative terminal of the power supply of control circuit 4, are electrically connected to the negative terminal of power supply 5. The other end of the common contact of relay 2 is also electrically connected to the common terminal of wiring port 3. The other end of the normally closed contact of relay 2 is also electrically connected to the normally closed terminal of wiring port 3, and the other end of the normally open contact of relay 2 is also electrically connected to the normally open terminal of wiring port 3. When the control circuit 4 receives the tripping command generated by the corresponding tripping operation component 11, it applies a pulse signal to the tripping coil of relay 2, causing the tripping coil of relay 2 to be energized instantaneously, so as to control the common contact of relay 2 to conduct with the normally closed contact, so that the first light-emitting chip of the dual-color LED 6 emits green light and the first circuit is connected; or when it receives the closing command generated by the corresponding closing operation component 12, it applies a pulse signal to the closing coil of relay 2, causing the closing coil of relay 2 to be energized instantaneously, so as to control the common contact of relay 2 to conduct with the normally open contact, so that the second light-emitting chip of the dual-color LED 6 emits red light and the second circuit is connected.

[0038] Understandably, relay 2 is a magnetic latching relay, internally integrating a trip coil, a closing coil, a moving armature, a permanent magnet latching mechanism, a common contact, a normally closed contact, and a normally open contact. The trip coil and the closing coil are two sets of independent electromagnetic drive coils. One end of the trip coil is electrically connected to the first pulse signal output terminal of the control circuit 4, and one end of the closing coil is electrically connected to the second pulse signal output terminal of the control circuit 4. The trip coil and the closing coil are respectively electrically connected to the first pulse signal return terminal and the second pulse signal return terminal of the control circuit 4, forming independent pulse drive electrical circuits.

[0039] The moving armature and the common contact adopt a rigid mechanical linkage structure, and the two can act synchronously; the permanent magnet holding mechanism is fixedly mounted on the iron core side inside the relay 2, which is used to provide a stable mechanical holding torque for the moving armature and the common contact, and can maintain the stable conduction state of the contact without the need for the coil to be continuously energized.

[0040] The common contact is a movable contact that can move synchronously with the armature, and one end of it is electrically connected to the positive terminal of the power supply 5; the normally closed contact and the normally open contact are fixed stationary contacts, located on both sides of the travel of the common contact.

[0041] Under the steady state of tripping, the moving armature, under the holding torque of the permanent magnet holding mechanism, drives the common contact to stably close with the normally closed contact and open with the normally open contact; the normally closed contact is simultaneously electrically connected to the positive terminal of the first light-emitting chip of the dual-color LED lamp 6 and the normally closed terminal of the wiring port 3.

[0042] Under the steady-state of closing, the moving armature, under the holding torque of the permanent magnet holding mechanism, drives the common contact to stably close with the normally open contact and open with the normally closed contact; the normally open contact is simultaneously electrically connected to the positive terminal of the second light-emitting chip of the dual-color LED lamp 6 and the normally open terminal of the wiring port 3.

[0043] The other end of the common contact is also electrically connected to the common terminal of wiring port 3. Through the switching action of the contact, the internal status indication and the external test signal output are linked synchronously to ensure the consistency and accuracy of the opening and closing status simulation.

[0044] The first light-emitting chip of the dual-color LED light 6 is a green light-emitting chip, corresponding to the open state indication; the second light-emitting chip is a red light-emitting chip, corresponding to the closed state indication. The two chips are connected in a common cathode manner, and the negative terminal is connected to the negative terminal of the power supply 5. The positive terminal of the power supply 5 is powered through the normally closed contact and normally open contact of the relay 2, respectively, to realize the automatic switching indication of the open and closed states.

[0045] In this embodiment, when the control circuit 4 receives a tripping command from the tripping operation component 11, it applies a brief pulse signal to the tripping coil of the relay 2, causing the tripping coil to be momentarily energized and driving the common contact to connect with the normally closed contact. At this time, the power supply 5 supplies power to the first light-emitting chip of the dual-color LED 6 through the common contact and the normally closed contact, causing the first light-emitting chip to emit green light. When the control circuit 4 receives a closing command from the closing operation component 12, it applies a brief pulse signal to the closing coil of the relay 2, causing the closing coil to be momentarily energized and driving the common contact to connect with the normally open contact. At this time, the power supply 5 supplies power to the second light-emitting chip of the dual-color LED 6 through the common contact and the normally open contact, causing the second light-emitting chip to emit red light. After the relay 2 completes the state switching under the drive of the above pulse signals, the permanent magnet mechanism keeps the common contact in a state of connection with the normally closed or normally open contact, and the tripping coil or the closing coil does not require continuous power supply from the control circuit 4. This feature reduces the overall power consumption of the device, making it more suitable for battery-powered portable applications. On the other hand, even if the device is unexpectedly powered off, the output state of relay 2 can be maintained stably, ensuring the authenticity and continuity of the simulated state.

[0046] In one embodiment, such as Figure 2 As shown, the simulated circuit breaker device also includes: a housing 7; multiple opening and closing operation components 1 and multiple dual-color LED lights 6 are disposed on the surface of the housing 7, each dual-color LED light 6 is adjacent to the corresponding opening and closing operation component 1, multiple relays 2 and multiple control circuits 4 are disposed inside the housing 7, and multiple wiring ports 3 are disposed on the side of the housing 7.

[0047] Specifically, the wiring port 3 can be a pluggable screw terminal or a spring-loaded terminal to facilitate quick wiring and disconnection on site. Each wiring port 3 can be screen-printed with corresponding contact markings (COM common terminal, NC normally closed terminal, NO normally open terminal) to make the wiring correspondence clear at a glance.

[0048] Specifically, both the tripping operation component 11 and the closing operation component 12 adopt push-button self-resetting mechanisms. For example, a tactile button of model PB-22E. When the user presses the button, a command is generated; after releasing the button, it automatically resets, preventing it from remaining in the connected state for an extended period and avoiding accidental continuous triggering.

[0049] In this embodiment, the opening and closing operation component 1 and the dual-color LED light 6 are located on the surface of the housing, and the wiring port is placed on the side. The internal relay 2 and control circuit 4 are integrated, with a compact and reasonable layout. Operation, wiring and status viewing do not interfere with each other, making it more convenient to use on site. The port markings are clear, which greatly reduces the risk of misconnection and adapts to the needs of multi-channel synchronous testing scenarios.

[0050] In one embodiment, such as Figure 2As shown, a double-layer circuit board is provided inside the housing 7, with the relay 2 and the control circuit 4 arranged on the double-layer circuit board in layers.

[0051] Specifically, multiple control circuits 4 are centrally located on the upper circuit board, and multiple relays 2 are located on the lower circuit board. The wiring ports 3 corresponding to each relay 2 are directly soldered or connected to the edge of the lower circuit board via wires. The upper and lower circuit boards are electrically connected by interlocking pin header and female header connectors. In this embodiment, the control circuits 4 and relays 2 are located on different layers of the double-layer circuit board, and the two layers are electrically connected by connectors. This layered layout effectively utilizes the height space inside the housing 7, reduces the planar area occupied by the circuit board, and achieves overall miniaturization and portability of the device.

[0052] In one embodiment, the inner wall of the housing 7 is provided with multiple slots, each corresponding to a different control circuit 4. Each control circuit 4 is fixed inside the housing 7 via its corresponding slot. In this embodiment, the slot-type fixing structure enables modular installation and positioning of the control circuit 4, making installation convenient and secure. It also facilitates the quick disassembly, inspection, and replacement of a single control circuit 4, aligning with the modular isolation design concept of the device and reducing the difficulty of on-site maintenance.

[0053] In one embodiment, such as Figure 2 As shown, the long side of the housing 7 does not exceed 130 mm, the wide side of the housing 7 does not exceed 100 mm, and the apex of the housing 7 is chamfered.

[0054] In this embodiment, by limiting the dimensions of the housing 7 to a length of no more than 130 mm and a width of no more than 100 mm, the entire simulated circuit breaker device can be held with one hand and easily stored in a commonly used tool bag or work clothing pocket, greatly improving the device's portability and adapting to the needs of mobile commissioning operations at substation sites. Furthermore, the chamfered corners of the housing 7 eliminate sharp edges, preventing scratches to operators or surrounding equipment during transport and use, thus improving grip comfort and operational safety.

[0055] In one embodiment, the housing 7 may be made of engineering plastic or lightweight metal to balance structural strength and portability.

[0056] In one embodiment, the simulated circuit breaker device further includes: a wireless communication module, which is communicatively connected to an external mobile terminal; the wireless communication module is used to receive delay configuration parameters sent by the external mobile terminal; each control circuit 4 is also used to, upon receiving a tripping command generated by the corresponding tripping and closing operation component 1, apply a pulse signal to the coil of the corresponding relay 2 after a preset delay according to the delay configuration parameters, so as to control the first circuit to conduct through the relay 2; or upon receiving a closing command generated by the corresponding tripping and closing operation component 1, apply a pulse signal to the coil of the corresponding relay 2 after a preset delay according to the delay configuration parameters, so as to control the second circuit to conduct through the relay 2.

[0057] Specifically, the wireless communication module is preferably a Bluetooth Low Energy (BLE) module. An external mobile terminal (such as a smartphone or tablet) runs a debugging application, allowing the debugging personnel to set different delay configuration parameters for each channel. For example, the first channel can be set to a closing delay of 30ms and a opening delay of 20ms, while the second channel can be set to a closing delay of 50ms and an opening delay of 40ms. Each control circuit 4 reads the delay configuration parameters from the wireless communication module via a serial interface and stores them in its internal memory. Each control circuit 4 also uses an internal timer to delay the operation upon receiving the opening or closing command generated by the corresponding opening / closing operation component 1, based on the delay configuration parameters, and applies a pulse signal to the coil of the relay 2 only after the timer overflows. This delay function enables the simulated circuit breaker device to accurately simulate the dispersion of actions of different models and operating conditions of circuit breaker mechanisms, providing more realistic and stringent test conditions for the overall transmission test of the external relay protection device under test.

[0058] For example, when the control circuit 4 receives a tripping or closing command from the tripping and closing operation component 1, the control circuit 4 first reads the pre-stored delay configuration parameters in the internal memory and starts the internal timer; before the timer overflows, the control circuit 4 does not output a drive pulse to the coil of the relay 2; after the timer overflows, the control circuit 4 applies a pulse signal to the coil of the relay 2, so that the relay 2 outputs a tripping or closing status signal to the external relay protection device under test through the corresponding wiring port 3.

[0059] In this embodiment, the wireless communication module is used to communicate with an external mobile terminal and receive delay configuration parameters sent by the external mobile terminal. These delay configuration parameters can be read by each control circuit 4. Each control circuit 4 is also used to, upon receiving a tripping or closing command generated by the corresponding tripping or closing operation component 1, not immediately drive the relay 2 to operate, but instead apply a pulse signal to the coil of the relay 2 after a preset time delay according to the delay configuration parameters. This function enables the simulated circuit breaker device to simulate the inherent operating delay of a real circuit breaker after receiving an operating command, thereby more realistically verifying the logic coordination performance of the external relay protection device under test considering the delay factor.

[0060] In one embodiment, the simulated circuit breaker device further includes a transparent protective flip cover connected to the surface of the housing 7. This flip cover covers all the opening and closing operating components 1 to prevent accidental opening and closing signal output due to accidental contact during transport or wiring, further enhancing the safety of the device in complex substation field operations.

[0061] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0062] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A simulated circuit breaker device, characterized in that, include: Multiple tripping and closing operation components (1), each tripping and closing operation component (1) is used to respond to the user's trigger operation and generate tripping or closing instructions; Multiple relays (2) correspond one-to-one with the opening and closing operation components (1); Multiple wiring ports (3) correspond one-to-one with the opening and closing operation components (1). Each wiring port (3) is used to connect the normally closed contact of the external relay protection device to be tested and the corresponding relay (2) to form a first circuit, and to connect the normally open contact of the external test device and the corresponding relay (2) to form a second circuit. Multiple control circuits (4) correspond one-to-one with the tripping and closing operation components (1). Each control circuit (4) forms a circuit with the coil of the corresponding relay (2) through the corresponding tripping and closing operation component (1). Each control circuit (4) is used to apply a pulse signal to the coil of the corresponding relay (2) when it receives the tripping command generated by the corresponding tripping and closing operation component (1), so as to control the first circuit to be turned on through the relay (2); or When a closing command is received from the corresponding opening and closing operation component (1), a pulse signal is applied to the coil of the corresponding relay (2) to control the second circuit to be turned on through the relay (2).

2. The simulated circuit breaker device according to claim 1, characterized in that, The circuit breaker opening and closing operation component (1) includes: circuit breaker opening operation component (11) and circuit breaker closing operation component (12); Each control circuit (4) forms a circuit with the coil of the corresponding relay (2) through the corresponding opening operation component (11) and closing operation component (12); The tripping operation component (11) is used to respond to the user's trigger operation and generate a tripping command; The closing operation component (12) is used to respond to the user's trigger operation and generate a closing command.

3. The simulated circuit breaker device according to claim 2, characterized in that, The device also includes: a power supply (5) and multiple dual-color LED lights (6); The dual-color LED light (6) corresponds one-to-one with the opening and closing operation component (1). The dual-color LED light (6) is connected to the power supply (5) through the normally closed or normally open contact of the corresponding relay (2). Each control circuit (4) is connected to the power supply (5) to form a power supply circuit. Power supply (5) is used to provide operating current to multiple control circuits (4) and multiple dual-color LEDs (6); The dual-color LED light (6) is used to emit green light when the first circuit is on or red light when the second circuit is on.

4. The simulated circuit breaker device according to claim 3, characterized in that, The relay (2) includes: a tripping coil, a closing coil, and a common contact; The positive terminal of the power supply (5) is electrically connected to the power input terminal of the control circuit (4) and one end of the common contact of the relay (2). The first command input terminal of the control circuit (4) is electrically connected to the tripping operation component (11), and the second command input terminal of the control circuit (4) is electrically connected to the closing operation component (12). The first pulse signal output terminal of the control circuit (4) is electrically connected to one end of the tripping coil of the relay (2), and the second pulse signal output terminal of the control circuit (4) is electrically connected to one end of the closing coil of the relay (2). The other end of the tripping coil of the relay (2) is electrically connected to the first pulse signal return terminal of the control circuit (4), and the other end of the closing coil of the relay (2) is electrically connected to the second pulse signal return terminal of the control circuit (4). The common contact of the relay (2) is... One end of the common contact is connected to either the normally closed or normally open contact of the relay (2). The other end of the normally closed contact of the relay (2) is electrically connected to the positive terminal of the first light-emitting chip of the dual-color LED lamp (6). The other end of the normally open contact of the relay (2) is electrically connected to the positive terminal of the second light-emitting chip of the dual-color LED lamp (6). The negative terminals of the first and second light-emitting chips of the dual-color LED lamp (6) and the negative terminal of the power supply of the control circuit (4) are all electrically connected to the negative terminal of the power supply (5). The other end of the common contact of the relay (2) is also electrically connected to the common terminal of the wiring port (3). The other end of the normally closed contact of the relay (2) is also electrically connected to the normally closed terminal of the wiring port (3). The other end of the normally open contact of the relay (2) is also electrically connected to the normally open terminal of the wiring port (3).

5. The simulated circuit breaker device according to claim 4, characterized in that, The control circuit (4) is used to apply a pulse signal to the trip coil of the relay (2) when it receives the trip command generated by the corresponding trip operation component (11), so that the trip coil of the relay (2) is energized momentarily, so as to control the common contact of the relay (2) to conduct with the normally closed contact, so that the first light-emitting chip of the dual-color LED lamp (6) emits green light and the first circuit is connected; or When the closing command generated by the corresponding closing operation component (12) is received, a pulse signal is applied to the closing coil of the relay (2) to energize the closing coil of the relay (2) instantaneously, so as to control the common contact of the relay (2) to conduct with the normally open contact, so that the second light-emitting chip of the dual-color LED (6) emits red light and the second circuit is turned on.

6. The simulated circuit breaker device according to claim 3, characterized in that, The simulated circuit breaker device also includes: a housing (7); Multiple circuit breaker and circuit breaker operation components (1) and multiple dual-color LED lights (6) are disposed on the surface of the housing (7). Each dual-color LED (6) is adjacent to the corresponding circuit breaker and circuit breaker operation component (1). Multiple relays (2) and multiple control circuits (4) are disposed inside the housing (7). Multiple wiring ports (3) are disposed on the side of the housing (7).

7. The simulated circuit breaker device according to claim 6, characterized in that, The housing (7) contains a double-layer circuit board, with the relay (2) and control circuit (4) arranged on the double-layer circuit board in layers.

8. The simulated circuit breaker device according to claim 6, characterized in that, The inner wall of the housing (7) is provided with multiple slots, which correspond one-to-one with multiple control circuits (4). Each control circuit (4) is fixed inside the housing (7) through the corresponding slot.

9. The simulated circuit breaker device according to claim 6, characterized in that, The long side dimension of the shell (7) does not exceed 130 mm, the wide side dimension of the shell (7) does not exceed 100 mm, and the vertex of the shell (7) is chamfered.

10. The simulated circuit breaker device according to claim 1, characterized in that, The device further includes: a wireless communication module, which is communicatively connected to an external mobile terminal; The wireless communication module is used to receive delay configuration parameters sent by an external mobile terminal; Each control circuit (4) is also used to, upon receiving a tripping command generated by the corresponding tripping and closing operation component (1), apply a pulse signal to the coil of the corresponding relay (2) after a preset delay according to the delay configuration parameter, so as to control the first circuit to be turned on through the relay (2); or When the closing command generated by the corresponding opening and closing operation component (1) is received, after a preset time delay according to the delay configuration parameter, a pulse signal is applied to the coil of the corresponding relay (2) so as to control the second circuit to be turned on through the relay (2).

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