A high-performance flexible power grid quality control device based on Internet of Things technology

Abstract

The present invention discloses a high-performance flexible power grid quality control device based on Internet of Things technology, which includes a control center and a monitoring center. The control center is a control console, which is equipped with a data acquisition module, a risk assessment module and a PLC. The risk assessment module includes a direct judgment unit, a simulation unit and a grade assessment unit. The monitoring center includes a power grid monitoring module and a power grid control module. The control console is provided with a display screen, and the upper and lower ends of the display screen are respectively provided with an upper guide rail and a lower guide rail. A vertically arranged cleaning cylinder is provided between the upper and lower guide rails, and the outer side of the cleaning cylinder is covered with a cleaning cloth. The present invention uses the Internet of Things to connect the control center with the monitoring center. By acquiring the power grid voltage and voltage operation data, making safety judgments and risk grade assessments, the present invention determines the intervention and adjustment methods for the power grid operation, thereby avoiding unreasonable crisis management and ensuring the safe and reliable operation of the power grid.

Description

Technical Field

[0001] The present invention relates to the technical field of control devices, and in particular to a high-performance flexible power grid quality control device based on Internet of Things technology. Background Art

[0002] Flexible distribution networks are those designed to achieve flexible closed-loop operation. Transforming distribution networks with flexible power electronics technology is a significant trend, effectively addressing some of the bottlenecks in the development of traditional distribution networks. Advanced power electronics technology enables the construction of flexible, reliable, and efficient distribution networks, improving the power quality, reliability, and operational efficiency of urban distribution systems while also addressing the volatility of both traditional loads and the proportion of renewable energy.

[0003] During the operation of the power grid, voltage is one of the important indicators of power quality. Voltage quality is of great significance to the safe and economic operation of the power system, ensuring the safety of users' electricity use and product quality, and the service life of electrical equipment. Therefore, the monitoring and regulation of voltage quality are of vital importance. When the existing control system is in operation, due to the large amount of data and information, it is easy for staff to fail to monitor in place, and there is no risk level classification, making it difficult to distinguish between the important and the unimportant during regulation. The control efficiency is low and it is easy to cause significant losses. In addition, the control center often has a switchboard display screen with a large screen, which is convenient for staff to check relevant basic data at any time. The high screen is not easy to clean, and the workload of the cleaning staff is heavy. Sometimes they even need to climb up to clean, which not only affects the overall work of the staff, but also makes cleaning inconvenient and has low work efficiency. For this reason, we designed a high-performance flexible power grid quality control device based on Internet of Things technology to solve the above problems. Summary of the Invention

[0004] The present invention proposes a high-performance flexible power grid quality control device based on Internet of Things technology, which solves the problems of the control center's screen cleaning being unchanging and the large amount of voltage quality monitoring data, which easily leads to inadequate monitoring. In addition, there is no risk level classification, which makes it difficult to distinguish the severity of control, resulting in low control efficiency and easy to cause significant losses.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A high-performance flexible power grid quality control device based on Internet of Things technology includes a control center and a monitoring center. The control center is a control console, which is equipped with a data acquisition module, a risk assessment module, and a PLC. The risk assessment module includes a direct judgment unit, a simulation unit, and a grade assessment unit. The input end of the direct judgment unit is connected to the output end of the data acquisition module, the output end of the direct judgment unit is connected to the input end of the simulation unit and the grade assessment unit respectively, the output end of the simulation unit is connected to the input end of the grade assessment module, and the output end of the grade assessment module is connected to the input end of the PLC. The monitoring center includes a power grid monitoring module and a power grid control module. The output end of the PLC is connected to the input end of the power grid controller via the Internet of Things, and the output end of the power grid monitoring module is connected to the input end of the data acquisition module via the Internet of Things.

[0007] The control console is provided with a display screen, and the upper and lower ends of the display screen are respectively provided with an upper guide rail and a lower guide rail, the upper side of the upper guide rail is slidably matched with a movable plate, and a driving motor is installed on the movable plate, and the inner sides of the upper guide rail and the lower guide rail are respectively provided with tooth grooves and wheel grooves in the length direction, and a rack is installed on one side wall of the tooth groove, and a vertically arranged cleaning cylinder is provided between the upper guide rail and the lower guide rail, and the outer side of the cleaning cylinder is covered with a cleaning cloth, and the two ends of the cleaning cylinder are respectively provided with an upper connecting rod and a lower connecting rod, and a driving gear matching the rack is installed on the upper connecting rod, the top end of the upper connecting rod passes through the upper guide rail and is connected to the output shaft of the driving motor, and the outer side of the lower connecting rod is sleeved with a support tube, and the bottom end of the support tube is rotatably connected to a movable wheel matching the wheel groove.

[0008] Preferably, the monitoring center is a power grid operation monitor, which monitors the voltage of the power grid operation.

[0009] Preferably, the output end of the PLC is connected to the input end of the simulation unit, and the simulation information in the simulation unit is pre-programmed and input by the PLC.

[0010] Preferably, an early warning unit is provided in the PLC, and the input end of the early warning unit is connected to the output end of the grade assessment unit.

[0011] Preferably, the evaluation levels of the risk assessment unit include no risk, low risk, medium risk and high risk, and parameter safety thresholds for safe operation of the power grid are set in the direct judgment unit.

[0012] Preferably, a clamping device mounted on the cleaning cylinder is provided on the outer side of the cleaning cloth.

[0013] Preferably, the clamping device includes a clamping groove, a clamping plate, a limit strip and a limit column. The clamping groove is axially opened on the outer wall of the cleaning cylinder. A clamping plate is fitted in the clamping groove. Both ends of the clamping plate are rotatably connected to the limit strip. The end faces of both ends of the cleaning cylinder are radially installed with multiple limit columns, and the limit strip is provided with a limit hole that matches the limit column.

[0014] Preferably, the outer side of the limiting column is covered with a rubber sleeve.

[0015] Preferably, the input end of the drive motor is electrically connected to the output end of the PLC.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention uses the Internet of Things to connect the control center with the monitoring center. By acquiring the grid voltage, making safety judgments, and assessing risk levels, it is convenient for staff to intervene and adjust the grid operating voltage in a timely manner. This is safe and effective, and the safety levels are clearly defined, which can avoid unreasonable crisis management and ensure the safe and reliable operation of the grid.

[0018] 2. The control console of the present invention can realize timely and labor-saving cleaning of the display screen by utilizing the cooperation of PLC and drive motor in the process of long-term control of the power grid, saving manpower and achieving high cleaning efficiency;

[0019] 3. After the cleaning cloth of the present invention has been used for a certain period of time, it can be quickly replaced or cleaned by utilizing the cooperation of the pressing device and the cleaning cylinder, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a control block diagram of a high-performance flexible power grid quality control device based on Internet of Things technology proposed in this invention.

[0021] Figure 2 This is a structural schematic diagram of a high-performance flexible power grid quality control device based on Internet of Things technology proposed by the present invention.

[0022] Figure 3 for Figure 2 Sectional view along line AA.

[0023] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0024] Reference numerals in the figure: 1 control console, 2 cleaning cloth, 3 clamping device, 31 pressing groove, 32 pressing plate, 33 limiting strip, 34 limiting column, 4 upper guide rail, 5 lower guide rail, 6 moving plate, 7 driving motor, 8 tooth groove, 9 wheel groove, 10 cleaning cylinder, 11 driving gear, 12 supporting tube, 13 moving wheel, 14 display screen. DETAILED DESCRIPTION

[0025] 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 described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Reference Figure 1 A high-performance flexible power grid quality control device based on Internet of Things technology includes a control center and a monitoring center. The control center is a control console 1, which is equipped with a data acquisition module, a risk assessment module and a PLC. The risk assessment module includes a direct judgment unit, a simulation unit and a grade assessment unit. The risk assessment unit has assessment levels including no risk, low risk, medium risk and high risk. The direct judgment unit is set with a parameter safety threshold for safe operation of the power grid voltage. The input end of the direct judgment unit is connected to the output end of the data acquisition module, and the output end of the direct judgment unit is connected to the input end of the simulation unit and the grade assessment unit respectively. The output of the simulation unit The end is connected to the input end of the grade assessment module, the output end of the grade assessment module is connected to the input end of the PLC, the output end of the PLC is connected to the input end of the simulation unit, the simulation information in the simulation unit is pre-programmed and input by the PLC, and an early warning unit is provided in the PLC, the input end of the early warning unit is connected to the output end of the grade assessment unit, the monitoring center is a power grid operation monitor, the power grid operation monitor monitors the voltage of the power grid operation, the monitoring center includes a power grid monitoring module and a power grid control module, the output end of the PLC is connected to the input end of the power grid controller through the Internet of Things, and the output end of the power grid monitoring module is connected to the input end of the data acquisition module through the Internet of Things.

[0027] Workflow: (1) The data acquisition module obtains the grid voltage information monitored by the grid monitoring module through the Internet of Things; (2) The data acquisition module sends the acquired information to the direct judgment unit. If the grid voltage data does not exceed the safety threshold in the direct judgment unit, the information is directly passed to the level assessment module to obtain a risk-free risk assessment; if the grid voltage data is lower than or exceeds the safety threshold in the direct judgment unit, the data needs to be sent to the simulation unit to perform risk simulation on the risk data and obtain a low-risk, medium-risk or high-risk risk level assessment; (3) The PLC obtains a risk-free result, no alarm, and does not interfere with the operation of the grid; after the PLC obtains the low-risk, medium-risk or high-risk risk level assessment result, it issues an early warning to facilitate the upper personnel to make corresponding judgments, and issues instructions to the grid control module to intervene and regulate the operation status of the grid through equipment such as reactive compensation devices.

[0028] Reference Figure 2-3The upper and lower ends of the display screen 14 are respectively provided with an upper guide rail 4 and a lower guide rail 5. The upper side of the upper guide rail 4 is slidably matched with a movable plate 6. The movable plate 6 is a U-shaped plate with an opening facing downward. A driving motor 7 is installed on the movable plate 6. The input end of the driving motor 7 is electrically connected to the output end of the PLC. The inner sides of the upper guide rail 4 and the lower guide rail 5 are respectively provided with a tooth groove 8 and a wheel groove 9 along the length direction. A rack is installed on one side wall of the tooth groove 8. A vertical cleaning cylinder 10 is provided between the upper guide rail 4 and the lower guide rail 5. The outer side of the cleaning cylinder 10 is covered with a cleaning cloth 2. The two ends of the cleaning cylinder 10 are respectively provided with an upper connecting rod and a lower connecting rod. A driving gear 11 that matches the rack is installed on the upper connecting rod. The top of the upper connecting rod passes through the upper guide rail 4 and is connected to the output shaft of the driving motor 7. The outer side of the lower connecting rod is sleeved with a support tube 12. The bottom end of the support tube 12 is rotatably connected with a moving wheel 13 that matches the wheel groove 9.

[0029] The working state of the drive motor 7 can be controlled by PLC. When the drive motor 7 rotates, it drives the drive gear 11 to rotate in the tooth groove. By engaging with the rack, the cleaning cylinder 10 can be moved along the upper guide rail 4. When the cleaning cylinder 10 moves, the support tube 12 and the moving wheel 13 are moved. The lower end of the cleaning cylinder 10 is connected to the support tube 12, so the rotation of the cleaning cylinder 10 will not affect the normal operation of the moving wheel 13, and can also ensure the smooth movement of the cleaning cylinder 10, which plays a role in assisting. When the cleaning cylinder 10 rotates, the cleaning cloth 2 can be used to clean the display screen 14, saving manpower and achieving high cleaning efficiency.

[0030] Reference Figure 3-4 The outside of the cleaning cloth 2 is provided with a clamping device 3 installed on the cleaning cylinder 10. The clamping device 3 includes a clamping groove 31, a clamping plate 32, a limit strip 33 and a limit column 34. The clamping groove 31 is axially opened on the outer wall of the cleaning cylinder 10. The clamping groove 31 is equipped with a clamping plate 32. Both ends of the clamping plate 32 are rotatably connected to the limit strip 33. The end faces of both ends of the cleaning cylinder 10 are radially installed with multiple limit columns 34. The outer side of the limit column 34 is covered with a rubber sleeve, and the limit strip 33 is provided with a limit hole that matches the limit column 34.

[0031] After working for a certain period of time, the cleaning cloth 2 needs to be replaced. When replacing, rotate the limit strips 33 at both ends of the pressing plate 32, and the limit strips 33 will turn away from the limit column 34. The pressing plate 32 can be removed and the cleaning cloth 2 can be replaced. Wrap the new cleaning cloth 2 on the outside of the cleaning cylinder 10, and use the pressing plate 32 to press a part of the cleaning cloth 2 into the pressing groove 31, and then rotate the limit strips 33 at both ends of the pressing plate 32 and clamp them on the appropriate limit column 34 to complete the fixation of the pressing plate 32, that is, complete the replacement of the cleaning cloth 2.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0034] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A high-performance flexible power grid quality control device based on Internet of Things technology, including a control center and a monitoring center, characterized in that: The control center is a control console (1), and the control console (1) is provided with a data acquisition module, a risk assessment module and a PLC. The risk assessment module includes a direct judgment unit, a simulation unit and a grade assessment unit. The input end of the direct judgment unit is connected to the output end of the data acquisition module, the output end of the direct judgment unit is connected to the input end of the simulation unit and the grade assessment unit respectively, the output end of the simulation unit is connected to the input end of the grade assessment module, and the output end of the grade assessment module is connected to the input end of the PLC. The monitoring center includes a power grid monitoring module and a power grid control module. The output end of the PLC is connected to the input end of the power grid controller via the Internet of Things, and the output end of the power grid monitoring module is connected to the input end of the data acquisition module via the Internet of Things. A display screen (14) is provided on the control console (1), and an upper guide rail (4) and a lower guide rail (5) are provided at the upper and lower ends of the display screen (14), a movable plate (6) is slidably matched on the upper side of the upper guide rail (4), a driving motor (7) is installed on the movable plate (6), and a tooth groove (8) and a wheel groove (9) are respectively provided inside the upper guide rail (4) and the lower guide rail (5) along the length direction, a rack is installed on one side wall of the tooth groove (8), and a vertical guide rail (8) is provided between the upper guide rail (4) and the lower guide rail (5). A cleaning cylinder (10) is provided, the outer side of the cleaning cylinder (10) is covered with a cleaning cloth (2), an upper connecting rod and a lower connecting rod are respectively installed at both ends of the cleaning cylinder (10), a driving gear (11) matched with a rack is installed on the upper connecting rod, the top end of the upper connecting rod passes through the upper guide rail (4) and is connected to the output shaft of the driving motor (7), a support tube (12) is sleeved on the outer side of the lower connecting rod, and the bottom end of the support tube (12) is rotatably connected to a moving wheel (13) matched with a wheel groove (9); The outer side of the cleaning cloth (2) is provided with a clamping device (3) installed on the cleaning cylinder (10), and the clamping device (3) includes a pressing groove (31), a pressing plate (32), a limiting strip (33) and a limiting column (34). The pressing groove (31) is axially opened on the outer wall of the cleaning cylinder (10), and a pressing plate (32) is matched in the pressing groove (31). Both ends of the pressing plate (32) are rotatably connected to the limiting strip (33). The end faces of both ends of the cleaning cylinder (10) are radially installed with a plurality of limiting columns (34), the outer side of the limiting column (34) is covered with a rubber sleeve, and the limiting strip (33) is provided with a limiting hole matched with the limiting column (34); The input end of the driving motor (7) is electrically connected to the output end of the PLC; The direct judgment unit is used to judge whether the grid voltage data exceeds the safety threshold; The simulation unit is used to perform risk simulation on data exceeding a threshold value.

2. A high-performance flexible power grid quality control device based on Internet of Things technology according to claim 1, characterized in that: The monitoring center is a power grid operation monitor, which monitors the voltage of the power grid operation.

3. The high-performance flexible power grid quality control device based on Internet of Things technology according to claim 1 is characterized in that: The output end of the PLC is connected to the input end of the simulation unit, and the simulation information in the simulation unit is pre-programmed and input by the PLC.

4. The high-performance flexible power grid quality control device based on Internet of Things technology according to claim 1 is characterized in that: An early warning unit is provided in the PLC, and an input end of the early warning unit is connected to an output end of the grade assessment unit.

5. The high-performance flexible power grid quality control device based on Internet of Things technology according to claim 1 is characterized in that: The risk assessment unit has selection levels including no risk, low risk, medium risk and high risk, and directly determines the parameter safety thresholds for safe operation of the power grid set in the unit.

6. A high-performance flexible power grid quality control device based on Internet of Things technology according to claim 5, characterized in that: The outer side of the limiting column (34) is covered with a rubber sleeve.

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