Portable power distribution automation switch simulation detection device

Abstract

The utility model relates to the technical field of simulation detection, in particular to a portable distribution automation switch simulation detection device, which comprises a control box, a measurement and control signal generator, a simulation circuit breaker, an electrical connection assembly and a back power supply module, the measurement and control signal generator and the simulation circuit breaker are connected with the control box through 485 data lines, the measurement and control signal generator and the simulation circuit breaker are connected with a device to be tested through the electrical connection assembly, and the measurement and control signal generator sends voltage / current signals to the device to be tested. The simulation circuit breaker and the to-be-tested device carry out bidirectional signal interaction, and the back power supply module supplies power to the control box, the measurement and control signal generator and the simulation circuit breaker.

Description

Technical Field

[0001] This utility model relates to the field of simulation testing technology, and in particular to a portable power distribution automation switch simulation testing device. Background Technology

[0002] Distribution automation equipment is a key component of the smart grid, enabling monitoring, protection, and control of the power grid system's operational status. Its health directly impacts the safe and stable operation of the power grid. Currently, the coverage rate of distribution automation equipment in China exceeds 98%. To simulate primary switch actions during uninterrupted power supply maintenance, relay simulators are commonly used. While common product designs can provide simple simulations of switch actions, this method requires the use of relay protection devices and generators, making on-site transportation, operation, and testing extremely difficult. Furthermore, existing devices lack built-in backup power supplies, simulated circuit breakers, and current / voltage generators. Using relay protection testers and generators on-site is not only time-consuming and labor-intensive but also increases the risk of equipment damage, the workload for personnel, and reduces the lifespan of precision instruments. Summary of the Invention

[0003] In view of the above-mentioned prior art, the present invention provides a portable power distribution automation switch simulation and testing device, which mainly solves the technical problems existing in the background art.

[0004] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:

[0005] A portable power distribution automation switch simulation and testing device includes a control box, a measurement and control signal generator, a simulated circuit breaker, an electrical connection assembly, and a backup power module. The measurement and control signal generator and the simulated circuit breaker are both connected to the control box via a 485 data cable, and are connected to the device under test (DUT) via the electrical connection assembly. The measurement and control signal generator sends voltage / current signals to the DUT, and the simulated circuit breaker interacts bidirectionally with the DUT. The backup power module supplies power to the control box, the measurement and control signal generator, and the simulated circuit breaker.

[0006] Optionally, the electrical connection assembly includes an aviation plug.

[0007] Optionally, the measurement and control signal generator includes an electronic current and voltage generator. The electronic current and voltage generator comprises at least an ARM controller, voltage and current generating units electrically connected to the ARM controller, and a switch interface electrically connected to the voltage and current generating units. The switch interface is connected to the device under test, and the ARM controller is connected to the control box via a 485 data line.

[0008] Optionally, the switch interface includes a current interface and a voltage interface, the voltage generating unit is electrically connected to the voltage interface, and the current generating unit is electrically connected to the current interface.

[0009] Optionally, the electronic current and voltage generator may further include an isolation power supply, which, after being connected to the back power module, supplies power to the ARM controller, the voltage generation unit, and the current generation unit respectively.

[0010] Optionally, the control box is equipped with a PLC controller, which is connected to the ARM controller and the analog circuit breaker via a 485 data line.

[0011] Optionally, the control box, the measurement and control signal generator, the analog circuit breaker, and the rear power module are housed in the same storage box, which has installation space and fixing structure for each component.

[0012] The beneficial effects of this invention are as follows: its electronic current and voltage generator and simulated circuit breaker quickly establish an electrical connection with the device under test via an aviation socket, eliminating the need for temporary and complex cabling; the rear power module, as an independent energy unit, can output multiple voltage standards (DC24V / AC100V / AC220V) to directly power each module, without relying on on-site mains power or a generator. Through the electronic current and voltage generator, voltage-time protection logic and current protection logic are tested and verified according to pre-set time parameters, and remote measurement functions are realized. Remote control and remote signaling functions are verified through the simulated circuit breaker, reducing the labor intensity of operators handling numerous devices and the risk of damage to precision instruments during transportation. Furthermore, the plug-and-test feature is convenient and easy to operate, allowing for independent or combined testing, avoiding the cumbersome operation of simultaneous debugging of multiple instruments in traditional equipment combinations, and significantly improving testing efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the simulation detection device in the embodiments of this application;

[0014] Figure 2 This is a schematic diagram of the rear interface of the electronic current and voltage generator in the embodiments of this application;

[0015] Figure 3 This is a schematic diagram of the rear interface of the simulated circuit breaker in the embodiments of this application;

[0016] Figure 4 A schematic diagram of the rear interface of the rear power module in this embodiment.

[0017] Explanation of icon numbers:

[0018] 1. Control box; 2. Measurement and control signal generator; 3. Analog circuit breaker; 4. Electrical connection components. Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. 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 utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0020] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0021] It should be understood that this invention can be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of this invention to those skilled in the art. Furthermore, the terminology used herein is intended only to describe particular embodiments and is not intended to limit the invention. When used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “compose” and / or “comprising,” when used in this specification, identify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.

[0022] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0023] To fully understand this utility model, a detailed structure will be presented in the following description to illustrate the technical solution proposed by this utility model. Optional embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0024] Please refer to the attached document. Figure 1 This application provides a portable power distribution automation switch simulation and testing device. The device includes a control box 1, a measurement and control signal generator 2, a simulated circuit breaker 3, an electrical connection component 4, and a rear power supply module. The measurement and control signal generator 2 and the simulated circuit breaker 3 are both connected to the control box 1 via a 485 data cable, and the measurement and control signal generator 2 and the simulated circuit breaker 3 are connected to the device under test via the electrical connection component 4. The measurement and control signal generator 2 sends voltage / current signals to the device under test, and the simulated circuit breaker 3 performs bidirectional signal interaction with the device under test. The rear power supply module supplies power to the control box 1, the measurement and control signal generator 2, and the simulated circuit breaker 3 respectively.

[0025] Specifically, the portable power distribution automation switch simulation and testing device provided in this application consists of a control box 1, a control signal generator 2, a simulated circuit breaker 3, an electrical connection assembly 4, and a power supply module. In use, the control signal generator 2 and the simulated circuit breaker 3 are first connected to the device under test, such as a complete set of power distribution automation switchgear, via the electrical connection assembly 4. The power supply module provides power to the control box 1, the control signal generator 2, and the simulated circuit breaker 3 respectively. The control box 1 establishes a bidirectional communication link with the control signal generator 2 and the simulated circuit breaker 3 via a 485 data cable. The circuit breaker operates in two ways. First, it sends commands to the control signal generator 2, causing it to generate voltage / current signals that meet the testing requirements. These signals are then injected into the device under test (DUT) via the electrical connection component 4, simulating the power signal input of an actual power distribution system. This verifies the voltage-time protection logic and current-time protection logic. Second, it issues control commands such as opening and closing to the simulated circuit breaker 3, enabling it to simulate the actions of a real circuit breaker. It also receives remote control commands from the DUT via the electrical connection component 4 and simultaneously transmits its own opening / closing status and contact position signals back to the DUT, forming a closed-loop signal interaction. Under the command of the control box 1, the control signal generator 2 precisely outputs voltage / current signals of specific amplitude and frequency to test parameters such as the protection device's action threshold and response time. The simulated circuit breaker 3, through mechanical structure or electronic simulation, dynamically switches between opening and closing states, verifying the accuracy of the remote control commands executed by the DUT and the reliability of the status feedback.

[0026] In some embodiments, the electrical connection assembly 4 includes an aviation plug.

[0027] In some embodiments, the measurement and control signal generator 2 includes an electronic current and voltage generator. The electronic current and voltage generator comprises at least an ARM controller, voltage and current generating units electrically connected to the ARM controller, and a switch interface electrically connected to the voltage and current generating units. The switch interface is connected to the device under test, and the ARM controller is connected to the control box 1 via a 485 data line.

[0028] Specifically, the ARM controller receives the detection task parameters sent by the control box 1 via the 485 data line. After encoding the parameters, the ARM controller sends a start command to the voltage generation unit and the current generation unit. The voltage generation unit and the current generation unit generate corresponding voltage and current signals and transmit them to the device under test through the switch interface. This simulates the power input under normal operation or fault condition of the power distribution system, and realizes the testing and verification of the voltage time-type protection logic or current protection logic of the device under test. During the detection process, the ARM controller synchronously collects the real-time output data of the voltage and current generation units and transmits it back to the control box 1 via the 485 data line.

[0029] Furthermore, the switch interface includes a current interface and a voltage interface. The voltage generating unit is electrically connected to the voltage interface, and the current generating unit is electrically connected to the current interface. The voltage interface is used to output a voltage signal, and the current interface is used to output a current signal.

[0030] Furthermore, the electronic current and voltage generator also includes an isolation power supply, which, after being connected to the back power module, supplies power to the ARM controller, the voltage generation unit, and the current generation unit respectively.

[0031] Furthermore, the electronic current and voltage generator is also equipped with a voltage switching switch for switching between 220V and 100V AC voltage, a current adjustment knob for adjusting current, a power supply and voltage acquisition start button for starting power supply and voltage acquisition, a voltage delay setting knob for setting voltage delay, a start voltage selection switch for selecting the start voltage on the power supply side or the load side, a fault start button for starting fault simulation, a current delay setting knob for setting current delay, a voltage display component for displaying AC 220 / 110V voltage, and a current display component for displaying current.

[0032] Specifically, the isolated power supply, as an independent power supply component for the electronic current and voltage generator, has the core function of providing a stable power supply with electrical isolation for the internal core circuit of the electronic current and voltage generator, ensuring the reliable operation of the ARM controller and the voltage and current generation units. The input terminal of the isolated power supply is directly connected to the back power supply module, receiving AC / DC input power from the back power supply and converting the input power into multiple isolated outputs to power the ARM controller, voltage generation unit, and current generation unit respectively.

[0033] Furthermore, the rear power module is a high-temperature resistant, flame-retardant, and explosion-proof lithium iron phosphate battery, which can output DC24 / AC100V / AC220V and supports free switching as needed.

[0034] Furthermore, the control box 1 is equipped with a PLC controller, which is connected to the ARM controller and the analog circuit breaker 3 via a 485 data line.

[0035] Specifically, the PLC controller connects to the ARM controller and the 485 interface of the analog circuit breaker 3 via two differential signal lines. As the master device, the PLC periodically sends instruction frames to the ARM controller and the analog circuit breaker 3. These instruction frames typically contain function codes, data addresses, and detection parameters. The PLC also receives response frames from the ARM controller and the analog circuit breaker 3, which typically contain status codes, real-time data, and fault information. Furthermore, the PLC controller can parse the detection parameters input by the operator, such as voltage amplitude, current duration, and circuit breaker operating sequence, into binary instructions, which are transmitted to the ARM controller via the 485 bus to drive the voltage / current generation unit to generate corresponding signals. Simultaneously, it sends opening and closing commands to the analog circuit breaker 3, enabling it to simulate the mechanical actions or electronic state switching of a real circuit breaker, accurately realizing remote control and remote signaling functions.

[0036] The following is a detailed description of the remote control and remote signaling functions implemented by the simulated circuit breaker 3: The simulated circuit breaker 3 first establishes a physical connection with the control circuit of the device under test (DUT) via an aviation socket, forming a bidirectional signal channel. One side communicates with the PLC controller via a 485 data line to receive remote control commands and send remote signaling data; the other side connects to the opening and closing control circuit and status acquisition circuit of the DUT via the aviation socket, achieving a full simulation of the control logic of a real circuit breaker. At the start of the test, the PLC controller sends an initialization command to the simulated circuit breaker 3 to confirm its initial state and calibrate the contact positions. During the remote control function test, the operator issues a "open-close-open" action sequence through the PLC controller. The PLC controller sends commands to the simulated circuit breaker 3 in sequence, driving the contacts to complete the corresponding actions, and simultaneously records the response time of each action to evaluate the delay characteristics of the remote control circuit of the DUT. In the remote signaling function test, the simulated circuit breaker 3 verifies its ability to correctly identify and upload abnormal status information by manually triggering a fault state or automatically generating a fault signal under the control of the PLC controller and sending it to the DUT through manual triggering of a fault state or automatic generation of a fault signal.

[0037] It should be noted that the specific model selection of the PLC controller, ARM controller, and analog circuit breaker 3 is based on conventional technical selection that can be determined by those skilled in the art through conventional technical means, based on design parameters, current selection standards, and technical manuals of commonly used products in the market. No creative effort is required, and it falls within the scope of common knowledge in the field. This embodiment will not provide specific explanation or elaboration here.

[0038] In some optional embodiments, the control box 1, the measurement and control signal generator 2, the analog circuit breaker 3, and the rear power module are housed in the same storage box. The storage box has corresponding installation space and fixing structure for each component. It should be noted that the installation space and fixing structure designed inside the storage box for the control box 1, the measurement and control signal generator 2, the analog circuit breaker 3, and the rear power module are based on the core principle of achieving integrated layout and reliable fixing of components through conventional design methods in the field of mechanical engineering. The relevant design ideas and technical solutions are all within the scope of what those skilled in the art can independently implement based on common knowledge. Those skilled in the art can independently complete the parameter design and engineering implementation of the installation space and fixing structure according to the specific equipment size and functional requirements by consulting mechanical design manuals and electrical equipment installation specifications, without any creative labor. This embodiment will not be specifically described or elaborated here.

[0039] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the protection scope of the stated claims.

Claims

1. A portable power distribution automation switch simulation and testing device, characterized in that, The device includes a control box, a measurement and control signal generator, an analog circuit breaker, an electrical connection assembly, and a backup power module. The measurement and control signal generator and the analog circuit breaker are both connected to the control box via a 485 data cable, and are connected to the device under test (DUT) via the electrical connection assembly. The measurement and control signal generator sends voltage / current signals to the DUT, and the analog circuit breaker performs bidirectional signal interaction with the DUT. The backup power module supplies power to the control box, the measurement and control signal generator, and the analog circuit breaker.

2. The portable power distribution automation switch simulation and testing device according to claim 1, characterized in that, The electrical connection components include aviation plugs.

3. The portable power distribution automation switch simulation and testing device according to claim 1, characterized in that, The measurement and control signal generator includes an electronic current and voltage generator. The electronic current and voltage generator comprises at least an ARM controller, voltage and current generating units electrically connected to the ARM controller, and a switch interface electrically connected to the voltage and current generating units. The switch interface is connected to the device under test, and the ARM controller is connected to the control box via a 485 data line.

4. The portable power distribution automation switch simulation and testing device according to claim 3, characterized in that, The switch interface includes a current interface and a voltage interface. The voltage generating unit is electrically connected to the voltage interface, and the current generating unit is electrically connected to the current interface.

5. The portable power distribution automation switch simulation and testing device according to claim 3, characterized in that, The electronic current and voltage generator also includes an isolation power supply, which, after being connected to the back power module, supplies power to the ARM controller, voltage generation unit, and current generation unit respectively.

6. The portable power distribution automation switch simulation and testing device according to claim 3, characterized in that, The control box contains a PLC controller, which is connected to the ARM controller and the analog circuit breaker via a 485 data line.

7. The portable power distribution automation switch simulation and testing device according to claim 1, characterized in that, The control box, the measurement and control signal generator, the analog circuit breaker, and the rear power module are housed in the same storage box, which has installation space and fixing structure for each component.

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