Portable power distribution automation function live-line verification device

Abstract

The invention provides a portable power distribution automation function live-line verification device, which comprises a shell, a voltage and current generation unit, a microswitch unit, a simulation unit and a control unit are arranged in the shell, the voltage and current generation unit is in data connection with the microswitch unit, the voltage and current generation unit is used for generating a voltage signal or a current signal, and the microswitch unit is connected with the simulation unit. The micro switch unit is in circuit connection with the control unit, the micro switch unit receives an operation signal and transmits the signal to the control unit, and the control unit controls the simulation unit to simulate transmission verification of the switch based on the received signal. By adopting automatic voltage and current output, various power distribution automation logics and protection criteria can be simulated, and the accuracy of an automation function and the integrity of a secondary circuit can be verified; functional verification and action simulation of the on-site power distribution automation equipment can be rapidly and efficiently carried out, the verification work quality and work efficiency can be improved, and loss caused by power failure can be reduced at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, in particular to the technical field of testing power distribution equipment, and specifically to a portable live verification device for power distribution automation functions. Background Art

[0002] With the wide application of intelligent distribution terminal equipment, we have entered a new era of "intelligent distribution network". Distribution automation equipment is a key component of the smart grid, realizing the monitoring, protection and control of the grid system under operation status. Its health status will affect the safe and stable operation of the grid system.

[0003] Traditional distribution automation verification methods usually require the use of bulky precision instruments such as relay protection testers, which are not only bulky and inconvenient to carry, but also require complex secondary wiring and professional operating skills. This not only increases the difficulty of verification work, but also increases the labor intensity of operation and maintenance personnel.

[0004] Therefore, there is a technical problem in the prior art that the existing distribution automation verification equipment is bulky and inconvenient to carry. Summary of the invention

[0005] The main purpose of the present invention is to provide a portable live verification device for distribution automation functions, so as to solve the technical problems in the related art that the existing distribution automation verification equipment is bulky and inconvenient to carry.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a portable distribution automation function live verification device, comprising a shell, in which a voltage and current generating unit, a micro switch unit, an analog unit and a control unit are arranged, wherein the voltage and current generating unit is data-connected with the micro switch unit, the voltage and current generating unit is used to generate a voltage signal or a current signal, the micro switch unit is circuit-connected with the control unit, the micro switch unit receives an operation signal and transmits the signal to the control unit, and the control unit controls the transmission verification of the analog switch of the analog unit based on the received signal.

[0007] In some embodiments, the control unit includes a control circuit board, and the micro switch unit is connected to the control circuit board circuit.

[0008] In some embodiments, the control unit also includes a verification logic chip and a relay circuit board, wherein the verification logic chip and the relay circuit board are circuit-connected, and the relay circuit board is data-connected to the analog unit. The verification logic chip can receive an operation signal sent from the microswitch unit, and after logical operation, transmit the result to the analog unit through the relay circuit board.

[0009] In some embodiments, a liquid crystal display screen is also provided on the housing, and the liquid crystal display screen is connected to the verification logic chip circuit.

[0010] In some embodiments, a knob is further provided on the housing, and the knob is connected to a control unit circuit.

[0011] In some embodiments, a quick-connect socket is provided on the housing, and the quick-connect socket is used for quick connection with a live verification plug.

[0012] In some embodiments, a buckle or a hook is provided at one end of the shell.

[0013] In some embodiments, a power source is disposed in the housing, and the power source is connected to the control circuit board and the relay circuit board.

[0014] In some embodiments, the power source is a lithium battery.

[0015] In some embodiments, the verification logic chip has at least one of the following verification formulas built in: voltage verification formula, resistance verification formula, power verification formula, current transformer verification formula, voltage transformer verification formula, insulation resistance verification formula and protection device action time verification formula.

[0016] The portable distribution automation function live verification device provided by the present disclosure includes a housing, a voltage and current generating unit, a micro switch unit, a simulation unit and a control unit are arranged in the housing, wherein the voltage and current generating unit is data-connected with the micro switch unit, the voltage and current generating unit is used to generate a voltage signal or a current signal, the micro switch unit is circuit-connected with the control unit, the micro switch unit receives an operation signal, and transmits the signal to the control unit, and the control unit controls the simulation unit to simulate the transmission verification of the switch based on the received signal. By adopting the automatic output of voltage and current, various distribution automation logics and protection criteria can be simulated and output to the secondary circuit of the operating equipment to verify the accuracy of the automation function and the integrity of the secondary circuit; when the equipment is energized, the distribution automation terminal is connected through a quick connector to simulate the transmission verification of a primary switch. The portable distribution automation function live verification device is convenient for distribution operation personnel to carry, and can quickly and efficiently carry out the function verification and action simulation of the on-site distribution automation equipment, so as to facilitate the operation and maintenance personnel to troubleshoot secondary problems without affecting the normal power supply, improve the quality and efficiency of the verification work, and reduce the losses caused by power outages. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 The structure diagram of the portable live verification device for power distribution automation function provided by the present invention is shown;

[0019] Figure 2 It shows a structural schematic diagram of another perspective of the portable live power distribution automation function verification device provided by the present invention;

[0020] Figure 3 A schematic diagram showing the structure of a control circuit board of a portable live power distribution automation function verification device provided by the present invention is shown;

[0021] The above drawings include the following reference numerals:

[0022] 10. Housing; 11. LCD display; 12. Knob; 13. Quick-connect socket; 14. Buckle; 20. Voltage and current generating unit; 30. Micro switch unit; 40. Analog unit; 50. Control unit; 51. Control circuit board; 52. Verification logic chip; 53 Verification analog module; 54. Relay circuit board; 55. Control loop interface; 60. Power supply system. DETAILED DESCRIPTION

[0023] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings, but are not intended to limit the present disclosure.

[0024] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0026] These and other characteristics of the present disclosure will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the attached drawings.

[0027] It should also be understood that, although the present disclosure has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present disclosure that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0028] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0029] Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant details. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of ways with substantially any suitable detailed structure.

[0030] It should be noted that the terms "first", "second", etc. in the specification of the present disclosure are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] This specification may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present disclosure.

[0032] The present disclosure is further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] In order to solve the technical problems in the prior art that the distribution automation verification equipment is bulky and inconvenient to carry, the present disclosure provides a portable distribution automation function live verification device.

[0034] like Figures 1 to 3 As shown, the portable distribution automation function live verification device provided by the present disclosure includes a shell 10, in which a voltage and current generating unit 20, a micro switch unit 30, a simulation unit 40 and a control unit 50 are arranged, wherein the voltage and current generating unit 20 is data-connected with the micro switch unit 30, and the voltage and current generating unit 20 is used to generate a voltage signal or a current signal, so as to simulate various distribution automation logics and protection criteria, and output them to the secondary circuit of the operating equipment to verify the accuracy of the automation function and the integrity of the secondary circuit; the micro switch unit 30 is circuit-connected with the control unit 50, the micro switch unit 30 receives the operation signal, and transmits the signal to the control unit 50, and the control unit 50 controls the simulation unit 40 to simulate the transmission verification of the switch based on the received signal; thereby making the verification process more intelligent.

[0035] Furthermore, the control unit 50 includes a control circuit board 51, and the micro switch unit 30 is connected to the control circuit board 51 in circuit. The control circuit board 51 is also provided with a verification unit and a relay circuit board 54, wherein the verification unit includes a verification logic chip 52 and a verification simulation module 53, the verification logic chip 52 is connected to the relay circuit board 54 in circuit, the relay circuit board 54 is connected to the simulation unit 40 in data, the verification logic chip 52 is connected to the verification simulation module 53 in circuit, the verification simulation module 53 can simulate various types of distribution automation logic and protection criteria, and the telemetry circuit control board outputs to the secondary circuit of the operating equipment to verify the accuracy of the automation function and the integrity of the secondary circuit; the verification logic chip 52 can receive the operation signal sent from the micro switch unit 30, and after the logic operation, transmit the result to the simulation unit 40 through the relay circuit board 54.

[0036] The verification simulation module 53 has at least one of the following verification formulas built in: voltage verification formula, resistance verification formula, power verification formula, current transformer verification formula, voltage transformer verification formula, insulation resistance verification formula and protection device action time verification formula.

[0037] Specifically, the voltage verification formula of the voltage and current generating unit 20 is:

[0038] V m =V r *(1+V d / V r );

[0039] Where: V m is the measured voltage value; V r is the reference voltage value; V d It is the voltage deviation value, which indicates the difference between the measured value and the reference value.

[0040] The ground resistance verification formula in the control circuit board 51 is:

[0041] R g =(pi*rho*L) / A;

[0042] Among them, R g is the grounding resistance, pi is π, rho is the soil resistivity, L is the length of the grounding electrode, and A is the cross-sectional area of ​​the grounding electrode.

[0043] The power verification formula in the verification simulation module 53 is:

[0044] P m =P r *(1+P d / P r );

[0045] Where: P m is the measured power value; P r is the reference power value; P d is the power deviation value, which indicates the difference between the measured value and the reference value.

[0046] The current transformer calibration formula in the voltage and current generating unit 20 is:

[0047] i=((K a -K r ) / K r )*100%;

[0048] Among them, K a is the actual transformation ratio, K r is the rated transformation ratio.

[0049] The voltage transformer PT in the voltage and current generating unit 20 is used to measure the voltage in the system. Its calibration parameter is usually the ratio difference. The calibration formula is:

[0050] x=((U a -U r ) / U r )*100%;

[0051] Among them, U a is the actual output voltage, U r is the rated output voltage.

[0052] The insulation resistance verification formula in the verification simulation module 53 is:

[0053] R i =U / I;

[0054] Among them, R i is the insulation resistance, U is the applied voltage, and I is the measured leakage current.

[0055] The action time verification formula of the protection device in the micro switch unit 30 is:

[0056] T a =t r +t c ;

[0057] Among them, T a is the total action time, t r is the relay action time, t c is the circuit delay time.

[0058] By setting multiple calibration formulas for voltage, current, resistance, and power, various parameters can be accurately measured and verified, improving the quality and efficiency of the calibration work.

[0059] Furthermore, the control circuit board 51 is also connected to the control loop interface 55 circuit, so as to realize signal transmission with the control center to achieve remote control of the device.

[0060] In order to facilitate observation and data recording, a liquid crystal display screen 11 is also provided on the housing 10, and the display screen can clearly display various verification results and related parameter information. The liquid crystal display screen 11 is closely connected to the verification logic chip 52 circuit, and can intuitively display the verification results and various parameters during use, which is convenient for operators to view and understand, thereby improving work efficiency and accuracy.

[0061] At the same time, a knob 12 is also provided on the housing 10. Preferably, the knob 12 can be provided above the display so that the operator can easily operate the knob 12 while viewing the display screen. The knob 12 is connected to the control unit 50 by a line, and the calibration parameters can be selected by rotating the knob 12 to meet different calibration requirements. This method of selecting parameters by rotating the knob 12 makes the operation more convenient, and the user can quickly adjust the settings according to actual needs to meet various calibration scenarios.

[0062] In order to meet the different requirements of different devices for wiring terminals, the housing 10 is provided with quick-connect sockets 13, which are designed to be quickly connected to live-test plugs. The live-test plugs are connected to the wiring terminals through wires, so that the requirements of different devices for diverse wiring terminals can be met by replacing live-test plugs with different wiring terminals. This design greatly improves the compatibility and flexibility of the device, so that the device can be widely used in various electrical equipment calibration work.

[0063] In some embodiments, a buckle 14 or a hook is provided at one end of the housing 10, so as to facilitate the operator to hold it and to facilitate the hanging of the equipment. Preferably, the buckle 14 can be a handheld arc ring, which is convenient for the operator to carry and can quickly and efficiently perform function verification and action simulation of the distribution automation equipment on site.

[0064] In order to avoid the inconvenience caused by the lack of external power during use, a power system 60 is specially arranged in the housing 10 of the present invention, and the power system 60 is connected with the circuits of the control circuit board 51 and the relay circuit board 54, thereby providing a stable power supply for the entire device. Such a design ensures the continuity and stability of the calibration process, so that the device can operate normally without an external power supply.

[0065] In a preferred embodiment of the power system 60, the power source is designed as a lithium battery, which is relatively small and convenient to be placed in the space inside the housing 10. In addition, the use of a rechargeable lithium battery as a power source not only facilitates the carrying and use of the device, but also greatly improves the secondary utilization value of the device, because the user can easily charge the battery, thereby extending the service life of the device.

[0066] The portable power distribution automation function live verification device provided by the present disclosure includes a shell 10, in which a voltage and current generating unit 20, a micro switch unit 30, a simulation unit 40 and a control unit 50 are arranged, wherein the voltage and current generating unit 20 is data-connected with the micro switch unit 30, the voltage and current generating unit 20 is used to generate a voltage signal or a current signal, the micro switch unit 30 is circuit-connected with the control unit 50, the micro switch unit 30 receives an operation signal and transmits the signal to the control unit 50, and the control unit 50 controls the simulation unit 40 to simulate the transmission verification of the switch based on the received signal. By adopting automatic output of voltage and current, it can simulate various types of distribution automation logic and protection criteria, and output them to the secondary circuit of the operating equipment to verify the accuracy of the automation function and the integrity of the secondary circuit; when the equipment is energized, it is connected to the distribution automation terminal through a quick connector to simulate the transmission verification of the primary switch. The portable distribution automation function live verification device is convenient for distribution operators to carry, and can quickly and efficiently carry out functional verification and action simulation of on-site distribution automation equipment, thereby facilitating operation and maintenance personnel to troubleshoot secondary problems without affecting normal power supply, improving the quality and efficiency of verification work, and reducing losses caused by power outages.

[0067] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0068] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0069] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A portable live verification device for power distribution automation function, characterized in that: It includes a shell, in which a voltage and current generating unit, a micro switch unit, an analog unit and a control unit are arranged, wherein the voltage and current generating unit is data-connected with the micro switch unit, the voltage and current generating unit is used to generate a voltage signal or a current signal, the micro switch unit is circuit-connected with the control unit, the micro switch unit receives an operation signal and transmits the signal to the control unit, and the control unit controls the transmission verification of the analog switch of the analog unit based on the received signal.

2. The portable live verification device for distribution automation function according to claim 1 is characterized in that: The control unit comprises a control circuit board, and the micro switch unit is connected to the control circuit board circuit.

3. The portable live verification device for power distribution automation function according to claim 2 is characterized in that: The control unit also includes a verification logic chip and a relay circuit board, wherein the verification logic chip and the relay circuit board are circuit-connected, and the relay circuit board is data-connected to the simulation unit. The verification logic chip can receive an operation signal sent from the microswitch unit, and after logical operation, transmit the result to the simulation unit through the relay circuit board.

4. The portable live verification device for distribution automation function according to claim 3 is characterized in that: The housing is also provided with a liquid crystal display screen, which is connected to the verification logic chip circuit.

5. The portable live verification device for distribution automation function according to claim 1 is characterized in that: The housing is also provided with a knob, and the knob is connected to the control unit circuit.

6. The portable live verification device for distribution automation function according to claim 1 is characterized in that: The housing is provided with a quick-connect socket, and the quick-connect socket is used for quick connection with a live verification plug.

7. The portable live verification device for power distribution automation function according to claim 1 is characterized in that: A buckle ring or a hook is arranged at one end of the shell.

8. The portable live verification device for distribution automation functions according to claim 2 is characterized in that: A power source is arranged in the shell, and the power source is connected to the control circuit board and the relay circuit board.

9. The portable live verification device for distribution automation functions according to claim 8 is characterized in that: The power source is a lithium battery.

10. The portable live verification device for power distribution automation function according to claim 3 is characterized in that: The verification logic chip has at least one of the following verification formulas built in: voltage verification formula, resistance verification formula, power verification formula, current transformer verification formula, voltage transformer verification formula, insulation resistance verification formula and protection device action time verification formula.

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