Substation disconnecting link equipment state sensing system

Abstract

The invention relates to the technical field of transformer substation operation and maintenance, and discloses a transformer substation disconnecting link equipment state sensing system, which comprises a plurality of direction sensing units suitable for respectively acquiring three-dimensional motion direction data of a plurality of disconnecting link equipment; the remote signaling acquisition unit is suitable for acquiring position signals of a plurality of disconnecting link devices; the central processing unit is in communication connection with the plurality of direction sensing units and the remote signaling acquisition unit; and the central processing unit is suitable for integrating the three-dimensional motion direction data of the plurality of disconnecting link devices and the position signals of the plurality of disconnecting link devices, and judging the positions of the plurality of disconnecting link devices and the corresponding three-dimensional motion directions. By integrating the three-dimensional motion direction data and the position signals of the plurality of disconnecting link devices, the positions of the plurality of disconnecting link devices and the three-dimensional motion directions corresponding to the positions of the plurality of disconnecting link devices are judged so as to obtain the state analysis result of the disconnecting link devices in real time, it is guaranteed that the disconnecting link devices can be in the correct state on the transformer substation, operation is easy and convenient, and efficiency is high. And the precision is high.

Description

Technical Field

[0001] The invention relates to the technical field of substation operation and maintenance, and in particular to a substation switch equipment state sensing system. Background Art

[0002] In the operation of existing substations, the integrated function of power grid control has been realized. In the daily operation of substations, it is often necessary to remotely operate the equipment in the substation at the dispatching end. The above equipment includes circuit breakers, disconnectors, grounding switches and other switch devices. A series of operations on the above switch devices are called "switching operations". In the switching operation, the position confirmation of the switch device generally uses the "position signal auxiliary contact".

[0003] In the actual application of knife switch device position confirmation, the conventional "position signal" is generally used to determine the position of the knife switch device. However, due to the single judgment criterion used, the accuracy and reliability of the knife switch device position judgment are relatively poor, and it is easy to misjudge the position status of the knife switch device. Summary of the invention

[0004] In view of this, the present invention provides a substation knife switch equipment status sensing system to solve the problem that in the actual application of knife switch equipment position confirmation, a single knife switch equipment "position signal" is generally used, but due to the single criterion used, the accuracy and reliability of the knife switch equipment position judgment are relatively poor, and it is easy to misjudge the position status of the knife switch equipment.

[0005] The present invention provides a state sensing system for a substation switch device, comprising: Multiple direction sensing units are suitable for respectively collecting three-dimensional movement direction data of multiple knife switch devices; Remote signal acquisition unit, suitable for collecting position signals of multiple switch devices; The central processing unit is communicatively connected with the multiple direction sensing units and the remote signal acquisition unit; the central processing unit is suitable for integrating the three-dimensional motion direction data of multiple knife switch devices and the position signals of multiple knife switch devices to determine the positions of multiple knife switch devices and the corresponding three-dimensional motion directions. Beneficial effect: The present application adopts the above technical scheme to determine the positions of multiple knife switch devices and the corresponding three-dimensional motion directions by integrating the three-dimensional motion direction data of multiple knife switch devices and the position signals of multiple knife switch devices; that is, the "knife switch device position signal and three-dimensional motion direction data" are integrated to obtain the status analysis results of the knife switch device in real time; the structural design of the substation knife switch device status sensing system described in the present application is reasonable, ensuring that the knife switch equipment can be in the correct state in the substation, easy to operate, and highly accurate.

[0006] Optionally, it also includes: The display unit is connected to the central processing unit, and the display unit is suitable for displaying the position information of the knife switch device and the corresponding three-dimensional movement direction. Beneficial effect: The application adopts the above technical solution to ensure a friendly human-machine interface.

[0007] Optionally, the display unit is connected to the central processing unit via a SPI bus.

[0008] Optionally, the remote signal collection unit includes: A terminal block connected to the plurality of switch devices; An open-in optocoupler has one end connected to the terminal block, and the other end of the open-in optocoupler is communicatively connected to the central processing unit.

[0009] Optionally, the central processing unit is communicatively connected to the multiple direction sensing units via a communication unit.

[0010] Optionally, the communication unit is an RS-485 bus communication module.

[0011] Optionally, the direction sensing unit includes: an angular velocity acquisition module, an acceleration acquisition module and a magnetic acquisition module. Beneficial effect: The present application adopts the above technical solution to collect corresponding signals of the knife switch device through the angular velocity acquisition module, the acceleration acquisition module and the magnetic acquisition module, so as to reliably obtain the three-dimensional movement direction of the knife switch device.

[0012] Optionally, the angular velocity acquisition module is a three-axis gyroscope; the acceleration acquisition module is a three-axis accelerometer; and the magnetic force acquisition module is a three-axis magnetometer.

[0013] Optionally, it also includes: The power supply unit is connected to the central processing unit. Beneficial effects: The present application adopts the above technical solution, and by setting the power supply, the central processing unit can work stably, and the substation switch equipment status sensing system works stably and efficiently, and has strong versatility.

[0014] Optionally, the display unit includes: an LCD screen, an LED light and a button, the LCD screen is suitable for displaying the position and status of the knife switch device, the LED light is suitable for reflecting whether the knife switch device is in operation, and the button serves as a human-machine interface for switching the menu in the LCD screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A connection diagram of a substation switch equipment status sensing system provided in an embodiment of the present invention; Figure 2 A connection diagram of a remote signal collection unit provided in an embodiment of the present invention; Figure 3 A connection diagram of a display unit provided in an embodiment of the present invention; Figure 4 It is a partial connection diagram of the substation switch equipment status sensing system provided in an embodiment of the present invention.

[0017] Description of reference numerals: 1. Direction sensing unit; 2. Knife switch device; 3. Remote signal acquisition unit; 4. Central processing unit; 5. Display unit; 6. SPI bus; 7. Terminal block; 8. Optocoupler; 9. Power supply unit; 10. Communication unit; 11. LCD screen; 12. LED light; 13. Button; 14. RS-485 bus; 15. A / D converter. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 described embodiments are 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 4 A specific implementation of the substation switch equipment state sensing system shown includes: multiple direction sensing units 1, remote signal collection unit 3, central processing unit 4, display unit 5 and power supply unit 9. The substation switch equipment state sensing system described in the present application is applied to substations, especially to power plant step-up substations.

[0020] like Figure 1 and Figure 3As shown, multiple direction sensing units 1 are suitable for respectively collecting three-dimensional motion direction data of multiple knife gate devices 2 and transmitting them to the central processing unit 4; specifically, the direction sensing unit 1 includes: an angular velocity acquisition module, an acceleration acquisition module and a magnetic acquisition module; the angular velocity acquisition module is a three-axis gyroscope; the acceleration acquisition module is a three-axis accelerometer; the magnetic acquisition module is a three-axis magnetometer. There are many models of three-axis gyroscopes, three-axis accelerometers and three-axis magnetometers that can be used in the prior art. Those skilled in the art can select appropriate models according to actual needs, and this embodiment will not cite examples one by one. The remote signal acquisition unit 3 is suitable for collecting position signals of multiple knife gate devices 2 and transmitting them to the central processing unit 4. The central processing unit 4 is connected to the multiple direction sensing units 1 and the remote signal acquisition unit 3 in communication; specifically, the central processing unit 4 is connected to the multiple direction sensing units 1 in communication through the communication unit 10, and the communication unit 10 is used to establish a network communication connection. The central processing unit 4 is suitable for integrating the three-dimensional motion direction data of multiple knife gate devices 2 and the position signals of multiple knife gate devices 2 to determine the positions of multiple knife gate devices 2 and the corresponding three-dimensional motion directions. The display unit 5 is connected to the central processing unit 4. Specifically, the display unit 5 is connected to the central processing unit 4 through the SPI bus 6. The central processing unit 4 is provided with a collection module, an analysis module and a correction module. The collection module is used to receive the data parameters collected and transmitted by the direction sensing unit 1 and the remote signal acquisition unit 3. The analysis module is used to perform corresponding analysis on the collected data parameters to obtain the analysis results. The correction module is used to correct the analysis results to improve the accuracy. The display unit 5 is suitable for displaying the position information of the knife gate device 2 and the corresponding three-dimensional motion direction. The power supply unit 9 is connected to the central processing unit 4; the power supply unit 9 is used to supply power to the central processing unit 4.

[0021] like Figure 2 As shown, the remote signal acquisition unit 3 includes: a terminal block 7 and an open-input optical coupler 8. The terminal block 7 is connected to the plurality of knife switch devices 2; one end of the open-input optical coupler 8 is connected to the terminal block 7, and the other end of the open-input optical coupler 8 is connected to the I / O port of the central processing unit 4 for communication.

[0022] like Figure 3 As shown, the display unit 5 includes: a liquid crystal screen 11, an LED light 12 and a button 13. The liquid crystal screen 11 is suitable for displaying the position and status of the knife switch device 2, the LED light 12 is suitable for reflecting whether the knife switch device 2 is in operation, and the button 13 serves as a human-machine interface and can be used for menu switching in the liquid crystal screen 11.

[0023] like Figure 4As shown, the communication unit 10 is an RS-485 bus communication module. In the direction sensing unit 1, the collected analog signal of the three-dimensional movement direction of the knife switch device 2 is converted into a digital signal through the A / D converter 15, and the digital signal is output, and then uploaded to the communication unit 10 through the RS-485 bus 14 through the Modbus protocol, and the I / O port of the central processing unit 4 exchanges data with the communication unit 10.

[0024] The working principle of the substation switch device state sensing system described in the present application is briefly described as follows: Based on the joint cooperation of the central processing unit 4, the direction sensing unit 1 and the remote signal acquisition unit 3, the direction of the switch device 2 is detected accordingly, and the data obtained by the detection may include angular velocity, acceleration and magnetism. Then, the central processing unit 4 performs corresponding analysis on the collected data, and finally obtains the position state of the switch device 2. Since there are many types of switch devices 2 in the existing application scenarios, it is necessary to analyze the historical operation data of various types of switch devices 2, summarize and analyze the motion trajectory and typical problems of the switch device 2, so as to identify the characteristics of abnormal opening and closing. A three-axis gyroscope, a three-axis accelerometer and a three-axis magnetometer are used to collect the angular velocity, acceleration and magnetism data of the switch device 2 respectively, and transmit them to the central processing unit 4. The central processing unit 4 performs corresponding analysis and processing on the collected data, collects the closing, opening and abnormal relay contact signals, and transmits the above-mentioned signals to the substation public measurement and control cabinet as the telemetry signal of the switch device 2 state judgment. The technical solution of the present application utilizes the cooperation of the central processing unit 4, the direction sensing unit 1 and the remote signal collection unit 3 to determine the position of the corresponding knife switch device 2, which not only has a fast response speed and high work efficiency, but also reduces the probability of misjudgment of the position of the knife switch device 2, and improves the reliability and efficiency of the switching operation.

[0025] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A state sensing system for a substation switch device, characterized in that: include: A plurality of direction sensing units (1) are adapted to respectively collect three-dimensional movement direction data of a plurality of knife switch devices (2); A remote signal collection unit (3) adapted to collect position signals of a plurality of knife switch devices (2); A central processing unit (4) is communicatively connected to the plurality of direction sensing units (1) and the remote signal acquisition unit (3); the central processing unit (4) is suitable for integrating the three-dimensional motion direction data of the plurality of knife switch devices (2) and the position signals of the plurality of knife switch devices (2), and determining the positions of the plurality of knife switch devices (2) and the three-dimensional motion directions respectively corresponding thereto.

2. The substation switch equipment status sensing system according to claim 1 is characterized in that: Also includes: A display unit (5) is connected to the central processing unit (4), and the display unit (5) is suitable for displaying the position information of the knife switch device (2) and the corresponding three-dimensional movement direction.

3. The substation switch equipment status sensing system according to claim 2 is characterized in that: The display unit (5) is connected to the central processing unit (4) via an SPI bus (6).

4. The substation switch equipment status sensing system according to claim 1 is characterized in that: The remote signal collection unit (3) comprises: A terminal block (7) connected to the plurality of knife switch devices (2); An open-in optical coupler (8) has one end connected to the terminal block (7), and the other end of the open-in optical coupler (8) is communicatively connected to the central processing unit (4).

5. The substation switch equipment status sensing system according to any one of claims 1 to 4, characterized in that: The central processing unit (4) is communicatively connected to the plurality of direction sensing units (1) via a communication unit (10).

6. The substation switch equipment status sensing system according to claim 5 is characterized in that: The communication unit (10) is an RS-485 bus communication module.

7. The substation switch equipment status sensing system according to any one of claims 1 to 4, characterized in that: The direction sensing unit (1) comprises: an angular velocity acquisition module, an acceleration acquisition module and a magnetic force acquisition module.

8. The substation switch equipment status sensing system according to claim 7 is characterized in that: The angular velocity acquisition module is a three-axis gyroscope; the acceleration acquisition module is a three-axis accelerometer; and the magnetic force acquisition module is a three-axis magnetometer.

9. The substation switch equipment status sensing system according to any one of claims 1 to 4, characterized in that: Also includes: A power supply unit (9) is connected to the central processing unit (4).

10. The substation switch equipment state sensing system according to claim 2 or 3, characterized in that: The display unit (5) comprises: a liquid crystal screen (11), an LED light (12) and a button (13); the liquid crystal screen (11) is suitable for displaying the position and state of the knife switch device (2); the LED light (12) is suitable for reflecting whether the knife switch device (2) is in an operating state; and the button (13) serves as a human-machine interface and is used for switching menus in the liquid crystal screen (11).

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