A test device for miniature simulation circuit breaker of distribution network automation terminal

Abstract

The present invention discloses a distribution network automation terminal micro-simulation circuit breaker test device, comprising an MCU control circuit, an input signal control circuit, an output signal control circuit, an ADC voltage and temperature detection circuit, and a human-computer interaction module; the input signal control circuit, the output signal control circuit, the ADC voltage and temperature detection circuit, and the human-computer interaction module are respectively connected to the MCU control circuit. The distribution network automation terminal micro-simulation circuit breaker test device provided by the present invention can reduce the labor and debugging time during terminal debugging, improve work efficiency, and has the characteristics of light weight and strong practicality.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breaker testing, and in particular to a distribution network automation terminal miniature simulation circuit breaker testing device. Background Art

[0002] At present, the circuit breaker simulation test equipment used by the test institute is the ONLY 6633D simulated circuit breaker device, which weighs 9kg. If automated terminal debugging is carried out on site, professional secondary wire packages, power cord reels and generators are also required. At least 5 people are required to carry out terminal debugging. This process is cumbersome, time-consuming and labor-intensive. In addition, during the secondary wiring process, the debugging accuracy and efficiency are low due to the inconsistency between the size of the aviation plug and the secondary wire clamp. Summary of the invention

[0003] The invention provides a distribution network automation terminal miniature simulation circuit breaker testing device to solve the deficiencies of the prior art.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A distribution network automation terminal micro-simulation circuit breaker test device, comprising an MCU control circuit, an input signal control circuit, an output signal control circuit, an ADC voltage and temperature detection circuit, and a human-computer interaction module;

[0006] The input signal control circuit, the output signal control circuit, the ADC voltage and temperature detection circuit and the human-computer interaction module are respectively connected to the MCU control circuit;

[0007] The input signal control circuit is composed of four relays, one of which is used to connect to the closing voltage or the opening voltage, and the other three relays are used to connect to three load resistors;

[0008] The output signal control circuit is composed of four circuit breakers, one of which is used for energy storage, and the other three circuit breakers are used for outputting closing signals or opening signals;

[0009] The ADC voltage and temperature detection circuit is used to measure the temperatures of the three load resistors, and to detect the magnitude of the input opening voltage or the closing voltage;

[0010] The human-computer interaction module is used to set the opening and closing voltage type, opening and closing voltage size, opening and closing time, and perform opening and closing control;

[0011] The MCU control circuit is used to perform opening processing when the input opening voltage meets the opening condition or to perform closing processing when the input closing voltage meets the closing condition, and to cut off the relay corresponding to a certain load resistor to perform opening processing when the measured temperature of a certain load resistor exceeds an upper limit threshold.

[0012] Furthermore, the distribution network automation terminal miniature simulation circuit breaker test device also includes a power supply circuit;

[0013] The power supply circuit is connected to the MCU control circuit and is used for providing a power supply voltage.

[0014] Furthermore, the distribution network automation terminal miniature simulation circuit breaker test device also includes a manual opening and closing button;

[0015] The manual opening and closing button is connected to the MCU control circuit and is used to output a closing signal or an opening signal.

[0016] Furthermore, in the distribution network automation terminal micro simulation circuit breaker test device, the human-computer interaction module and the MCU control circuit use an RS232 interface to perform real-time data interaction.

[0017] Furthermore, the distribution network automation terminal micro-simulation circuit breaker test device also includes an opening indicator light and a closing indicator light;

[0018] The opening indicator light and the closing indicator light are respectively connected to the MCU control circuit and are used to issue light prompts under the control of the MCU control circuit.

[0019] Furthermore, the distribution network automation terminal micro-simulation circuit breaker test device also includes an alarm module;

[0020] The alarm module is connected to the MCU control circuit and is used for issuing an alarm prompt under the control of the MCU control circuit.

[0021] Furthermore, in the distribution network automation terminal micro simulation circuit breaker testing device, the human-computer interaction module is a touch display screen.

[0022] A distribution network automation terminal miniature simulation circuit breaker test device provided by an embodiment of the present invention can reduce the labor and debugging time during terminal debugging, improve work efficiency, and has the characteristics of light weight and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a structural schematic diagram of a distribution network automation terminal micro simulation circuit breaker testing device provided in Example 1 of the present invention.

[0025] Reference numerals:

[0026] MCU control circuit 10, input signal control circuit 20, output signal control circuit 30, ADC voltage and temperature detection circuit 40, human-computer interaction module 50, power supply circuit 60, manual opening and closing button 70. DETAILED DESCRIPTION

[0027] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it is to be understood that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally disposed component. When a component is considered to be "disposed on" another component, it may be directly disposed on the other component or there may be a centrally disposed component.

[0029] In addition, terms such as "long", "short", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention. They do not indicate or imply that the device or component referred to must have this specific direction or operate with a specific direction structure, and should not be understood as a limitation of the present invention.

[0030] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0031] Embodiment 1

[0032] Please refer to Figure 1The embodiment of the present invention provides a distribution network automation terminal micro simulation circuit breaker test device, which can be used for testing relay protection devices, including an MCU control circuit 10 (MCU model is STM32F103), an input signal control circuit 20, an output signal control circuit 30, an ADC voltage and temperature detection circuit 40 and a human-computer interaction module 50;

[0033] The input signal control circuit 20, the output signal control circuit 30, the ADC voltage and temperature detection circuit 40 and the human-computer interaction module 50 are respectively connected to the MCU control circuit 10;

[0034] The input signal control circuit 20 is composed of four relays, one of which is used to connect to the closing voltage or the opening voltage, and the other three relays are used to connect to three load resistors;

[0035] The output signal control circuit 30 is composed of four circuit breakers, one of which is used for energy storage, and the other three circuit breakers are used for outputting closing signals or opening signals;

[0036] The ADC voltage and temperature detection circuit 40 is used to measure the temperatures of the three load resistors, and to detect the magnitude of the input opening voltage or the closing voltage;

[0037] The human-machine interaction module 50 is used to set the opening and closing voltage type, opening and closing voltage size, opening and closing time, and perform opening and closing control;

[0038] The MCU control circuit 10 is used to perform opening processing when the input opening voltage meets the opening condition or to perform closing processing when the input closing voltage meets the closing condition, and is used to cut off the relay corresponding to a certain load resistor for opening processing when the measured temperature of a certain load resistor exceeds an upper limit threshold (such as 80°C).

[0039] It should be noted that the test device weighs only 0.5KG, and the power supply uses the distribution automation terminal to provide the operating power supply. It uses aviation plug wiring, and produces 4-core, 5-core, 6-core, 10-core, and 26-core aviation plug converters according to industry technical specifications. It only removes the closing and opening contacts and the operating power supply contacts. It has a gate opening indicator light and an action timer, which can simulate the opening time, reduce the time for on-site debugging of the distribution automation terminal, and can verify whether the aviation plug is made according to the technology during acceptance. And similar to the jigsaw-like docking method, the switch opening and closing of the line and the protection logic principle are intuitively simulated through the distribution network automation terminal (no switch body is required) and the micro simulation circuit breaker, thereby improving the acceptance of trainees in distribution automation skills and technical training, and improving training efficiency.

[0040] Preferably, it also includes a power supply circuit 60;

[0041] The power supply circuit 60 is connected to the MCU control circuit 10 and is used to provide a power supply voltage.

[0042] Preferably, it also includes a manual opening and closing button 70;

[0043] The manual opening and closing button 70 is connected to the MCU control circuit 10 and is used to output a closing signal or an opening signal.

[0044] Preferably, the human-computer interaction module 50 and the MCU control circuit 10 use an RS232 interface for real-time data exchange.

[0045] Preferably, it also includes an opening indicator light and a closing indicator light;

[0046] The opening indicator light and the closing indicator light are respectively connected to the MCU control circuit 10 and are used to issue light prompts under the control of the MCU control circuit 10.

[0047] Preferably, it also includes an alarm module;

[0048] The alarm module is connected to the MCU control circuit 10 and is used for issuing an alarm prompt under the control of the MCU control circuit 10.

[0049] Preferably, the human-computer interaction module 50 is a touch display screen.

[0050] Specifically, the opening and closing processing flow of the test device is as follows:

[0051] 1. Power-on initialization

[0052] Initialized at power-on, the default is the open state, the open indicator light is on, but the coil resistance is not connected.

[0053] The ADC voltage and temperature detection circuit 40 detects the voltage magnitudes of the input opening voltage and closing voltage and the temperature magnitude of the load resistor.

[0054] 2. Load temperature

[0055] If the maximum value of the temperature of the three load resistors exceeds 80.0°C, the operation is cut off, and the default is to return to the open state, and the highest temperature value among the three temperatures is displayed on the human-machine interaction module 50, and the opening and closing operation is no longer performed. If it exceeds the limit, when the temperature is lower than 75.0°C again, normal operation is restored.

[0056] 3. Opening input voltage is effective

[0057] When both opening and closing signals are connected, opening takes priority.

[0058] As long as the opening input voltage is valid, the "opening" and "closing" operations on the human-machine interaction module 50 are invalid; the manual "opening" button and manual "closing" button operations are invalid.

[0059] As long as the trip input voltage is valid, the coil resistor is connected, and the trip process is executed after the trip time is reached.

[0060] 4. The input voltage is valid when the switch is closed

[0061] When the trip input voltage is valid, the coil resistor is connected, and the trip process is executed after the trip time is reached.

[0062] When the opening input voltage is invalid, clicking the "opening" or "closing" button on the human-machine interaction module 50 or pressing the manual "opening" or "closing" button can realize the switching between opening and closing, and execute the corresponding opening and closing processing.

[0063] When the opening input voltage is invalid and the closing input voltage is valid, the coil resistor is connected and the closing time

[0064] After that, the closing process is executed.

[0065] 5. Both opening and closing input voltages are invalid

[0066] Clicking the "open" or "close" button on the human-machine interaction module 50 or pressing the manual "open" or "close" button can realize the switching between opening and closing, and execute the corresponding opening and closing processing.

[0067] 6. Execute the closing process

[0068] The "closed position" in the signal output terminal is connected to the "common".

[0069] Among the signal output terminals, A is connected (terminals 1 and 2), B is connected (terminals 3 and 4), C is connected (terminals 5 and 6), and D is connected (terminals 7 and 8).

[0070] The "closed position" of the 10-core aviation plug is connected to the "common". The closing indicator light is on.

[0071] 7. Execute the opening process

[0072] The "open position" and "common" of the signal output terminal are connected. The "open position" and "common" of the 10-core aviation plug are connected. The opening indicator light is on.

[0073] 8. Note

[0074] Clicking the "Open" or "Close" button on the human-machine interaction module 50 or pressing the manual "Open" or "Close" button has nothing to do with the parameters set in the human-machine interaction module 50. The coil resistance is not connected, the opening and closing time is not counted, and only the signal output terminal is controlled to open or close.

[0075] When the coil resistance is connected, the opening and closing time timing only occurs when the opening and closing input voltage signal is valid.

[0076] A distribution network automation terminal miniature simulation circuit breaker test device provided by an embodiment of the present invention can reduce the labor and debugging time during terminal debugging, improve work efficiency, and has the characteristics of light weight and strong practicality.

[0077] Thus far, the description of the above-described embodiments is provided for the purpose of illustration and description. It is not intended to be exhaustive or to limit the present disclosure. The individual elements or features of a specific embodiment are generally not subject to the limitations of the specific embodiment, but when applicable, they can be interchanged and used for selected embodiments even if not specifically shown or described. In many respects, the same element or feature also can be changed. This variation is not considered to be a departure from the present disclosure, and all such modifications are intended to be included in the scope of the present disclosure.

[0078] Example embodiments are provided so that the present disclosure will be thorough and the scope will be fully conveyed to those skilled in the art. In order to thoroughly understand the embodiments of the present disclosure, numerous details are set forth, such as examples of specific parts, devices, and methods. Obviously, for those skilled in the art, it is not necessary to use specific details, the example embodiments can be implemented in many different forms, and neither should be construed as limiting the scope of the present disclosure. In certain example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.

[0079] Here, specialized vocabulary is used only for the purpose of describing specific example embodiments, and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a" and "the" used herein may be intended to include plural forms as well. The terms "including" and "having" are inclusive, and therefore specify the presence of the claimed features, wholes, steps, operations, elements and / or components, but do not exclude the presence or additional presence of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof. Unless the order of execution is clearly indicated, the method steps, processing and operations described herein are not interpreted as necessarily needing to be performed in the specific order discussed and shown. It should also be understood that additional or optional steps may be adopted.

[0080] When an element or layer is referred to as being "on ...", "engaged with ...", "connected to" or "coupled to" another element or layer, it may be directly on another element or layer, engaged with another element or layer, connected to or coupled to another element or layer, or there may be an intervening element or layer. In contrast, when an element or layer is referred to as being "directly on ...", "directly engaged with ...", "directly connected to" or "directly coupled to" another element or layer, there may be no intervening element or layer. Other words used to describe element relationships should be interpreted in a similar manner (e.g., "between ..." and "directly between ...", "adjacent" and "directly adjacent", etc.). The term "and / or" used herein includes any and all combinations of one or more of the associated listed items. Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts are not limited by these terms. These terms may only be used to distinguish one element, component, region or part from another element, component, region or part. Unless clearly indicated by the context, the use of terms such as "first", "second" and other numerical terms herein does not imply sequence or order. Therefore, the first element, component, region, layer or part discussed below can adopt the terminology of the second element, component, region, layer or part without departing from the teaching of the exemplary embodiment.

[0081] Spatially relative terms, such as "inside", "outside", "below", "below...", "lower", "above", "upper", etc., may be used herein for ease of description to describe the relationship between one element or feature and one or more other elements or features as shown in the figure. Spatially relative terms may be meant to include different orientations of the device in addition to the orientation depicted in the figure. For example, if the device in the figure is flipped, the elements described as "below other elements or features" or "below elements or features" will be oriented as "above other elements or features". Therefore, the example term "below..." may include both upward and downward orientations. The device can be oriented in other ways (rotated 90 degrees or other orientations) and interpreted with the spatially relative descriptions herein.

Claims

1. A distribution network automation terminal miniature simulation circuit breaker test device, characterized in that: It includes MCU control circuit, input signal control circuit, output signal control circuit, ADC voltage and temperature detection circuit, human-computer interaction module, power supply circuit and manual opening and closing buttons; The input signal control circuit, the output signal control circuit, the ADC voltage and temperature detection circuit and the human-computer interaction module are respectively connected to the MCU control circuit; The input signal control circuit is composed of four relays, one of which is used to connect to the closing voltage or the opening voltage, and the other three relays are used to connect to three load resistors; The output signal control circuit is composed of four circuit breakers, one of which is used for energy storage, and the other three circuit breakers are used for outputting closing signals or opening signals; The ADC voltage and temperature detection circuit is used to measure the temperatures of the three load resistors, and to detect the magnitude of the input opening voltage or the closing voltage; The human-computer interaction module is used to set the opening and closing voltage type, opening and closing voltage size, opening and closing time, and perform opening and closing control; The MCU control circuit is used to perform opening processing when the input opening voltage meets the opening condition or to perform closing processing when the input closing voltage meets the closing condition, and to cut off the relay corresponding to a certain load resistor to perform opening processing when the measured temperature of a certain load resistor exceeds an upper limit threshold.

2. The distribution network automation terminal miniature simulation circuit breaker test device according to claim 1 is characterized in that: The power supply circuit is connected to the MCU control circuit and is used for providing a power supply voltage.

3. The distribution network automation terminal miniature simulation circuit breaker test device according to claim 1 is characterized in that: The manual opening and closing button is connected to the MCU control circuit and is used to output a closing signal or an opening signal.

4. The distribution network automation terminal miniature simulation circuit breaker test device according to claim 1, characterized in that: The human-computer interaction module and the MCU control circuit use an RS232 interface for real-time data exchange.

5. The distribution network automation terminal miniature simulation circuit breaker test device according to claim 1, characterized in that: It also includes an opening indicator light and a closing indicator light; The opening indicator light and the closing indicator light are respectively connected to the MCU control circuit and are used to issue light prompts under the control of the MCU control circuit.

6. The distribution network automation terminal miniature simulation circuit breaker test device according to claim 1, characterized in that: Also includes an alarm module; The alarm module is connected to the MCU control circuit and is used for issuing an alarm prompt under the control of the MCU control circuit.

7. The distribution network automation terminal miniature simulation circuit breaker test device according to claim 1, characterized in that: The human-computer interaction module is a touch display screen.

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