Power distribution terminal operation and maintenance device

Abstract

The utility model discloses a power distribution terminal operation and maintenance device, comprising an upper computer, the upper computer is connected with a single-chip microcomputer, the single-chip microcomputer is respectively connected with a first port group and a second port group, and the upper computer, the first port group and the second port group are all connected with a tested terminal; the first port group comprises an input port and an output port, and the input port and the output port are both connected with a circuit breaker of a tested terminal; the output port group comprises an electromagnetic output port, an electronic output port and a digital output port. Due to the arrangement of the output port group, the equipment can be compatible with electromagnetic, electronic and digital tested terminals for testing, checking and operation and maintenance, compared with the existing equipment, the operation and maintenance time and operation and maintenance tools are saved, the operation and maintenance operation steps are reduced, the technical requirements on operation and maintenance teams are reduced, and the operation and maintenance efficiency is improved. And a technician can easily master to maintain the tested terminal.

Description

Technical Field

[0001] This utility model belongs to the field of power distribution terminal operation and maintenance technology, and in particular relates to a power distribution terminal operation and maintenance device. Background Technology

[0002] The testing of existing distribution automation terminal equipment typically involves using traditional relay protection testers to output current and voltage to electromagnetic distribution automation terminal equipment. Dedicated maintenance software provided by the distribution automation terminal supplier is then used to monitor remote control data, access and modify settings, and retrieve historical data files. Testing electronic and digital distribution automation terminal equipment requires electronic and digital signal converters to convert the electromagnetic signals into electronic and digital signals, respectively, to complete the test. This testing method is very cumbersome, and the maintenance software provided by different distribution automation terminal suppliers is not compatible. Each distribution automation terminal requires a corresponding set of maintenance software, placing high demands on the technical skills of the maintenance team. Summary of the Invention

[0003] The purpose of this utility model is to address the problems existing in the prior art by providing a power distribution terminal operation and maintenance device, which solves the problems of cumbersome traditional testing methods and incompatibility between power distribution terminals from different manufacturers, resulting in high technical requirements for the operation and maintenance team.

[0004] According to the specification, this utility model provides a power distribution terminal operation and maintenance device, including: a host computer, the host computer is connected to a microcontroller, the microcontroller is respectively connected to a first port group and a second port group, and the host computer, the first port group and the second port group are all connected to the terminal under test;

[0005] The first port group includes an input port and an output port, both of which are connected to the circuit breaker of the terminal under test.

[0006] The output port group includes electromagnetic output ports, electronic output ports, and digital output ports.

[0007] Through the above technical solution, the setting of the input port enables the power distribution terminal maintenance device to quickly locate the fault point, provide accurate fault information for maintenance personnel, and shorten the fault handling time. The input of the power distribution terminal maintenance device is connected to the opening / closing signal of the terminal under test to realize the closed-loop automatic monitoring function, automatically monitor the opening / closing signal and automatically calculate the opening / closing action time, so that maintenance personnel can automatically understand the status of the terminal under test in real time and automatically judge the test results based on the opening / closing action time.

[0008] The output port settings, through the output function of the power distribution terminal maintenance device, combined with the input, can automatically feed back the position signal of the tested terminal in open / closed position, realizing closed-loop automatic control.

[0009] The output port group configuration enables this device to be compatible with electromagnetic, electronic, and digital terminals under test for testing, verification, and maintenance. It is compatible with the existing maintenance software of various manufacturers and can simulate the functions of a master station to perform operations on the terminals under test, including remote data monitoring, setting value retrieval, setting value modification, and historical data file retrieval. Compared with existing equipment, it saves maintenance time and tools, reduces maintenance operation steps, thereby lowering the technical requirements for maintenance teams and making it easier for technicians to maintain the terminals under test.

[0010] As a further technical solution, the device also includes a display screen, which is connected to the host computer. The display screen allows the operator to intuitively and in real time observe the test and debugging results and process of the terminal under test.

[0011] As a further technical solution, the device also includes a power supply component, which is connected to a current / voltage operational amplifier, and the current / voltage operational amplifier is connected to a microcontroller.

[0012] As a further technical solution, the host computer is equipped with a communication port and a transmission port, both of which are connected to the terminal under test. Continuous interaction with the terminal under test is achieved through the communication port, enabling remote monitoring of the terminal's data. The terminal under test transmits its response position / separation information to the host computer through the transmission port.

[0013] As a further technical solution, the input port integrates an input circuit, which includes: a first diode, one end of which is connected to the input terminals of two first resistors; the output terminals of the two first resistors are each connected to the input terminal of a first integrated circuit, the input terminal of a second integrated circuit, and a common input terminal; the output terminal of the first integrated circuit is connected to digital ground and a first transistor; and the output terminal of the second integrated circuit is connected to a second transistor and a second diode. This technical solution achieves precise processing and control of the input signal, improving the anti-interference capability and stability of the input port.

[0014] As a further technical solution, the first integrated circuit is equipped with an optocoupler, and a first transistor is connected between the second integrated circuit and the second transistor. One contact of the first transistor is connected to a second diode. This technical solution, by adding an optocoupler, achieves electrical isolation and protects the internal circuit from external interference. The addition of the first transistor provides more flexibility and adjustment space for signal processing, improving circuit performance.

[0015] As a further technical solution, the output port integrates an output circuit, which includes: a VCC power supply, the VCC power supply being connected to the input terminal of the optocoupler and the input terminal of the relay, one contact of the relay being connected to at least one second transistor, and the other contact of the relay and the output terminal of the optocoupler being connected to the output terminal.

[0016] The above technical solution enables effective control of the tested terminal, improving the reliability and security of the output port. Furthermore, the output of the power distribution terminal maintenance device utilizes optocoupler output, with an output response time of less than 1ms. This allows for rapid transmission of location signals and effective detection of terminal events.

[0017] As a further technical solution, multiple capacitors are connected in parallel between the relay and the second transistor in the output circuit. The parallel connection of the capacitors can filter out high-frequency noise and improve circuit stability. Simultaneously, the energy storage function of the capacitors can provide stable power during power fluctuations, ensuring the normal operation of the circuit.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This application enables the power distribution terminal maintenance device to quickly locate the fault point by setting the input port, providing accurate fault information to maintenance personnel and shortening the fault handling time. The input of the power distribution terminal maintenance device is connected to the opening / closing signal of the terminal under test, which can realize the closed-loop automatic monitoring function, automatically monitor the opening / closing signal and automatically calculate the opening / closing action time, so that maintenance personnel can automatically understand the status of the terminal under test in real time and automatically judge the test results based on the opening / closing action time.

[0020] 2. This application, through the setting of the output port, utilizes the output function of the power distribution terminal maintenance device, in conjunction with the input, to automatically feedback the position signal of the tested terminal in open / closed position, thereby achieving closed-loop automatic control.

[0021] 3. This application, through the configuration of the output port group, enables the device to be compatible with electromagnetic, electronic, and digital terminals under test for testing, verification, and maintenance. It is compatible with existing maintenance software from various manufacturers, enabling the simulation of a master station to perform operations on the terminals under test, including remote monitoring, remote control data retrieval, and modification of settings, as well as historical data file retrieval. Compared to existing equipment, this saves maintenance time and tools, reduces maintenance steps, and lowers the technical requirements for maintenance teams, making it easier for technicians to maintain the equipment. Attached Figure Description

[0022] Figure 1A schematic diagram of the structure of a power distribution terminal maintenance device provided in an embodiment of this utility model;

[0023] Figure 2 A schematic diagram of the input circuit structure of a power distribution terminal maintenance device provided in this embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the output circuit structure of a power distribution terminal maintenance device provided in an embodiment of the present utility model. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] like Figure 1 As shown in the figure, this utility model embodiment provides a power distribution terminal operation and maintenance device, including: a host computer, a microcontroller connected to the host computer, and the microcontroller connected to a first port group and a second port group respectively. The host computer, the first port group, and the second port group are all connected to the terminal under test. The first port group includes an input port and an output port, and both the input port and the output port are connected to the circuit breaker of the terminal under test. The output port group includes an electromagnetic output port, an electronic output port, and a digital output port.

[0027] The input port is used by the terminal under test to provide feedback to the microcontroller that the circuit breaker of the terminal under test has performed a closing / opening operation, and the output port is used by the microcontroller to provide the terminal under test with the position information of the circuit breaker in the closed / open position.

[0028] Secondly, in this embodiment, the host computer is equipped with a communication port and a transmission port, both of which are connected to the terminal under test.

[0029] Through the above technical solutions, the input port settings enable the power distribution terminal maintenance device to quickly locate the fault point, providing maintenance personnel with accurate fault information and shortening fault handling time. The input of the power distribution terminal maintenance device is connected to the opening / closing signal of the terminal under test, realizing a closed-loop automatic monitoring function. It automatically monitors the opening / closing signal and automatically calculates the opening / closing action time, allowing maintenance personnel to automatically understand the status of the terminal under test in real time and automatically judge the test results based on the opening / closing action time. The output port settings, through the output function of the power distribution terminal maintenance device, in conjunction with the input, can automatically feed back the position signal of the open / closed position of the terminal under test, realizing closed-loop automatic control.

[0030] Furthermore, in this embodiment, by setting up an output port group that includes electromagnetic, electronic, and digital output ports, the device is compatible with electromagnetic, electronic, and digital terminals under test for testing, verification, and maintenance. It is compatible with existing maintenance software from various manufacturers and can simulate master station functions to perform operations on the terminals under test, including remote monitoring, remote control data retrieval, and modification of settings, as well as historical data file retrieval. Compared to existing equipment, this saves maintenance time and tools, reduces maintenance steps, and lowers the technical requirements for maintenance teams, making it easier for technicians to maintain the terminals under test.

[0031] The host computer and the terminal under test are connected via two lines. One line connects to the terminal under test through a transmission port, which is used for the terminal under test to feed back the information received from the output interface to the host computer. The other line connects to the terminal under test through a communication port to perform data interaction, so as to realize the three-remote data monitoring of the terminal under test and realize functions such as setting value retrieval, setting value modification, and historical data file retrieval.

[0032] The host computer contains a simulation master station and a testing scheme. In this embodiment, the functions of the host computer are implemented by an industrial control computer. This technical solution utilizes an industrial control computer as the carrier of the simulation master station, which improves the stability and reliability of the device, while reducing development costs and maintenance difficulty.

[0033] In this embodiment, the simulated master station is the control center of the entire device, responsible for communication and data exchange with the terminal under test. The simulated master station establishes a communication connection with the terminal under test via the 101 protocol (using an RS232 interface) or the 104 protocol (using an RJ45 interface).

[0034] This utility model provides a power distribution terminal operation and maintenance device, which also includes a display screen connected to a host computer. In this technical solution, the display screen allows the operator to intuitively and in real-time observe the test and debugging results and process of the terminal under test.

[0035] The present invention provides a power distribution terminal maintenance device, which further includes a power supply component. The power supply component is connected to a current / voltage operational amplifier, which is connected to a microcontroller for amplifying voltage or current signals.

[0036] The power supply components include digital power modules and analog power modules. By equipping them with two types of power modules, they can provide stable power to digital circuits and analog circuits respectively without interfering with each other.

[0037] like Figure 2As shown in the embodiment of this utility model, the input port integrates an input circuit, which includes: a first diode, one end of which is connected to the input terminals of two first resistors; the output terminals of the two first resistors are connected to the input terminals of a first integrated circuit, a second integrated circuit, and a common input terminal; the output terminal of the first integrated circuit is connected to digital ground and a first transistor; and the output terminal of the second integrated circuit is connected to a second transistor and a second diode. This technical solution achieves precise processing and control of the input signal, improving the anti-interference capability and stability of the input port.

[0038] The first integrated circuit incorporates an optocoupler, and the second integrated circuit is connected to the second transistor via a first transistor. One contact of the first transistor is connected to the second diode. This technical solution, by adding an optocoupler, achieves electrical isolation, protecting the internal circuitry from external interference. The addition of the first transistor provides greater flexibility and adjustment range for signal processing, improving circuit performance.

[0039] like Figure 3 As shown in the embodiment of this utility model, the output port integrates an output circuit, which includes: a VCC power supply, the VCC power supply being connected to the input terminal of the optocoupler and the input terminal of the relay, one contact of the relay being connected to at least one second transistor, and the other contact of the relay and the output terminal of the optocoupler being connected to the output terminal.

[0040] The above technical solution enables effective control of the tested terminal, improving the reliability and security of the output port. Furthermore, the output of the power distribution terminal maintenance device utilizes optocoupler output, with an output response time of less than 1ms. This allows for rapid transmission of location signals and effective detection of terminal events.

[0041] In the output circuit, multiple capacitors are connected in parallel between the relay and the second transistor. The parallel connection of these capacitors filters out high-frequency noise, improving circuit stability. Simultaneously, the energy storage function of the capacitors provides stable power during power fluctuations, ensuring the normal operation of the circuit.

[0042] The working principle of the above-described utility model embodiments:

[0043] The host computer connects to the simulated master station via a communication protocol to send test plans. After receiving the test plan, the simulated master station selects the appropriate data interface from the second output interface group based on the interface type of the terminal under test. This data interface transmits the corresponding signals to the terminal under test via cable.

[0044] After receiving the instruction, the terminal under test will perform the corresponding operation and generate the circuit breaker's closing or opening information. This information is received by the microcontroller through the input interface. After receiving this information, the microcontroller will perform logic processing, which is a pre-downloaded existing logic processing program, and send a response signal to the terminal under test through the output interface, indicating that the circuit breaker is in the closed or open state.

[0045] After receiving the response signal from the microcontroller, the terminal under test (DUT) will feed back relevant data, including the circuit breaker's status information and operation results, to the analog master station. The analog master station then continuously interacts with the DUT through the communication port to achieve remote monitoring of the DUT's data.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power distribution terminal operation and maintenance device, characterized in that, include: A host computer is connected to a microcontroller, and the microcontroller is connected to a first port group and a second port group respectively. The host computer, the first port group, and the second port group are all connected to the terminal under test. The first port group includes an input port and an output port, both of which are connected to the circuit breaker of the terminal under test. The second port group includes an electromagnetic output port, an electronic output port, and a digital output port.

2. The power distribution terminal operation and maintenance device according to claim 1, characterized in that: It also includes a display screen, which is connected to the host computer.

3. The power distribution terminal operation and maintenance device according to claim 1, characterized in that: It also includes a power supply component, which is connected to a current / voltage operational amplifier, and the current / voltage operational amplifier is connected to a microcontroller.

4. The power distribution terminal operation and maintenance device according to claim 1, characterized in that: The host computer is equipped with a communication port and a transmission port, both of which are connected to the terminal under test.

5. A power distribution terminal operation and maintenance device according to claim 1, characterized in that: The input port integrates an input circuit, which includes: a first diode, one end of which is connected to the input terminals of two first resistors, the output terminals of the two first resistors being connected to the input terminals of a first integrated circuit, a second integrated circuit, and a common input terminal; the output terminal of the first integrated circuit being connected to digital ground and a first transistor; and the output terminal of the second integrated circuit being connected to a second transistor and a second diode.

6. A power distribution terminal operation and maintenance device according to claim 5, characterized in that: The first integrated circuit is equipped with an optocoupler, and the second integrated circuit and the second transistor are connected by a first transistor, and one of the contacts of the first transistor is connected to the second diode.

7. A power distribution terminal operation and maintenance device according to claim 1, characterized in that: The output port integrates an output circuit, which includes: a VCC power supply, the VCC power supply being connected to the input terminal of the optocoupler and the input terminal of the relay, one contact of the relay being connected to at least one second transistor, and the other contact of the relay and the output terminal of the optocoupler being connected to the output terminal.

8. A power distribution terminal operation and maintenance device according to claim 7, characterized in that: Multiple capacitors are connected in parallel between the relay and the second transistor in the output circuit.

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