Ring network type boundary metering integrated protection device with self-healing function

Abstract

The invention belongs to the technical field of power system protection equipment, and particularly relates to a looped network type boundary metering integrated protection device with a self-healing function, which comprises a box body, a mounting box, two supporting plates, an adjusting assembly, a heat conduction buffer assembly, a heat dissipation assembly, a control unit, a current and voltage acquisition module, a communication module, a boundary switch, a metering module and a self-healing execution module, the two supporting plates are slidably mounted on the inner side wall of the box body, the adjusting assembly is arranged in the box body and connected with the two supporting plates, the mounting box is mounted on the lower supporting plate in a clamped mode, and the heat conduction buffering assembly is arranged on the upper supporting plate and matched with the mounting box. The heat dissipation assemblies are arranged at the top and the bottom of the box body and connected with the two supporting plates. The system is reasonable in design, has the advantages of function integration, efficient fault processing, high power supply reliability, strong communication compatibility, excellent heat dissipation performance and the like, is suitable for various power distribution network environments, and has a wide application prospect.

Description

Technical Field

[0001] The present invention relates to the technical field of power system protection equipment, and particularly relates to a ring network type boundary metering integrated protection device with a self-healing function. Background Art

[0002] In modern power systems, the distribution network, as a key link directly facing a large number of power users, plays a crucial role in social production and life with its stable and reliable operation. With the rapid development of the economy and continuous progress of technology, various electrical equipment is increasing day by day, and power users' requirements for power supply quality and reliability have reached an unprecedented level. However, current distribution network protection equipment and related technologies face many challenges. Traditional distribution network protection devices often have single functions. For example, the boundary device is only responsible for dividing the boundary between users and the power grid, the metering device focuses on electricity metering, and the protection device is mainly used for fault protection, and they work independently without coordination. This leads to a long time for fault location and isolation and low power supply restoration efficiency when a fault occurs in the distribution network, affecting the normal power consumption of users. At the same time, the scattered arrangement of different functional devices increases equipment costs, installation space, and maintenance difficulties.

[0003] With the continuous increase in the functions of distribution network protection devices and the gradual improvement of integration, the heat dissipation problem inside the device has become increasingly prominent. Traditional devices often lack sufficient consideration for heat dissipation during design, lacking effective heat dissipation measures and reasonable heat dissipation structures. When the device operates for a long time or works under high load conditions, a large amount of heat generated inside cannot be dissipated in time, easily leading to too high device temperature, which in turn causes problems such as a decline in the performance of electronic components, shortened lifespan, and even failure and damage. For example, during high-temperature periods in summer, when the distribution network load is large, some traditional protection devices frequently malfunction due to poor heat dissipation, seriously threatening the safe and stable operation of the distribution network.

[0004] Therefore, the present invention proposes a ring network type boundary metering integrated protection device with a self-healing function to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a ring network type boundary metering integrated protection device with a self-healing function to solve the problems of scattered functions of existing distribution network protection devices, low fault handling efficiency, and insufficient power supply reliability.

[0006] The above technical objective of the present invention is achieved through the following technical solutions: A ring network type boundary metering integrated protection device with a self-healing function, including a box body, an installation box, two support plates, an adjustment component, a heat conduction and buffer component, a heat dissipation component, a control unit, a current and voltage acquisition module, a communication module, a boundary switch, a metering module, and a self-healing execution module; Both pallets are slidably mounted on the inner side wall of the box body. The adjusting assembly is arranged inside the box body and connected to the two pallets. The mounting box is snap-fitted on the lower pallet. The heat-conducting and buffering assembly is arranged on the upper pallet and adapted to the mounting box. The heat dissipation assembly is arranged on the top and bottom of the box body and connected to the two pallets; A plurality of partition plates are fixedly installed inside the mounting box. The control unit, current and voltage acquisition module, communication module, sectionalizing switch, metering module and self-healing execution module are respectively fixedly installed on the corresponding partition plates; The control unit, as the core component, connects and coordinates the work of other modules; The current and voltage acquisition module collects the current and voltage signals in the line in real time through the current transformer and transmits them to the control unit; The communication module is responsible for data transmission between the device and external devices; The sectionalizing switch is used to divide the user side and the grid side and can quickly cut off the fault area in case of a fault; The metering module realizes accurate metering of electric energy; The self-healing execution module executes corresponding self-healing operations according to the instructions of the control unit.

[0007] Preferably, the control unit locates the fault point based on an advanced fault diagnosis algorithm, combining the real-time collected data and the power grid topology structure information.

[0008] Preferably, the self-healing execution module selects the optimal power supply restoration plan according to a variety of pre-stored self-healing strategies and the real-time power grid operation conditions.

[0009] Preferably, the communication module adopts a new type of adaptive communication protocol, which can automatically adjust communication parameters according to the real-time status of the communication network and has good compatibility, enabling seamless communication with equipment from different manufacturers.

[0010] Preferably, data interaction between the internal functional modules of the device is carried out through a high-speed and reliable internal communication bus.

[0011] Preferably, the adjusting assembly includes two bidirectional lead screws, two belt pulleys and a belt. Two bidirectional lead screws are rotatably installed on the top inner wall and the bottom inner wall of the box body and are arranged in parallel with each other. Both bidirectional lead screws are threadedly connected to the two pallets. Belt pulleys are fixedly sleeved on both bidirectional lead screws, and the same belt is drivingly connected to the two belt pulleys.

[0012] Preferably, the adjusting assembly further includes a motor, a worm and a worm gear. A motor is fixedly installed on one side inner wall of the box body. The output shaft of the motor is axially fixedly connected with the worm. A worm gear is fixedly sleeved on the bidirectional lead screw close to the motor, and the worm meshes with the worm gear.

[0013] Preferably, the heat conduction buffer assembly includes a plurality of sliding rods, a plurality of fixing blocks, a limiting clamping plate and a plurality of springs. A plurality of sliding rods are fixedly installed on the bottom side of the upper pallet. Fixing blocks are slidably installed on the plurality of sliding rods. A limiting clamping plate clamped and installed on the top of the installation box is fixedly installed on the plurality of fixing blocks. Springs are fixedly installed on the plurality of fixing blocks. The top ends of the plurality of springs are fixedly connected to the upper pallet above. The plurality of springs are respectively movably sleeved on the outer sides of the corresponding sliding rods. Moreover, the sliding rods, the pallet, the fixing blocks and the limiting clamping plate are all made of materials with good heat conductivity.

[0014] Preferably, the heat dissipation assembly includes two heat dissipation plates, a plurality of heat conduction plates and a plurality of flexible heat conduction sheets. Heat dissipation plates are fixedly installed on the top and bottom of the box body. A plurality of heat conduction plates extending into the box body are fixedly installed on one side of the two heat dissipation plates close to each other. Flexible heat conduction sheets connected to the corresponding pallets are fixedly installed on the plurality of heat conduction plates.

[0015] Preferably, a heat dissipation fan is fixedly installed on one side of the box body. An air inlet is formed on the other side of the box body. A net plate and a dehumidification filter plate are fixedly installed in the air inlet.

[0016] The beneficial effects of the present invention are as follows: First of all, the device integrates the functions of demarcation, metering, protection and self-healing, realizes the integration and integration of functions, avoids the problems of scattered functions and poor coordination of traditional devices, and improves the efficiency of fault handling and the reliability of power supply through the collaborative work of each functional module.

[0017] Secondly, based on an advanced fault diagnosis algorithm, the control unit can collect data in real time and locate the fault point in combination with the power grid topology structure information, improving the accuracy and speed of fault location. The self-healing execution module selects the optimal power supply restoration plan according to a variety of pre-stored self-healing strategies and the real-time power grid operation conditions, realizing the rapid recovery of faults.

[0018] Furthermore, the communication module adopts a new type of adaptive communication protocol, has good compatibility and adaptability, can realize seamless communication with equipment of different manufacturers, improves the versatility and expandability of the device. At the same time, data interaction between each functional module inside the device is carried out through a high-speed and reliable internal communication bus, ensuring the real-time and reliability of data transmission.

[0019] In addition, the design of the adjustment component enables the installation box to be easily adjusted in height to meet installation requirements at different heights. The settings of the heat conduction buffer component, the heat dissipation component, and the cooling fan together ensure good heat dissipation performance inside the device, avoiding equipment failures caused by overheating. The settings of the cooling fan and the air inlet further improve the heat dissipation effect. At the same time, the dehumidification filter plate can also prevent moisture from entering the device, ensuring the stable operation of the equipment.

[0020] In summary, the integrated protection device with self-healing function and ring network type boundary metering of the present invention has the advantages of functional integration, efficient fault handling, high power supply reliability, strong communication compatibility, excellent heat dissipation performance, etc. It is applicable to various distribution network environments and has broad application prospects. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a three-dimensional structure diagram of an integrated protection device with self-healing function and ring network type boundary metering proposed by the present invention; Figure 2 For Figure 1 the front view; Figure 3 It is a structural diagram of the pallet, adjustment component, and heat conduction buffer component part proposed by the present invention; Figure 4 For Figure 3 the structural diagram from another perspective; Figure 5 It is a cross-sectional structural diagram of the installation box part proposed by the present invention.

[0023] In the figure: 1, box body; 11, cooling fan; 2, pallet; 21, bidirectional lead screw; 22, belt pulley; 23, belt; 24, motor; 25, worm; 26, worm gear; 3, installation box; 31, partition board; 32, control unit; 33, current and voltage acquisition module; 34, communication module; 35, boundary switch; 36, metering module; 37, self-healing execution module; 4, limit clamping plate; 41, sliding rod; 42, spring; 5, heat dissipation plate; 51, heat conduction plate; 52, flexible heat conduction sheet. Detailed Embodiments

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts fall within the scope of protection of the present invention.

[0025] Referring to Figures 1-5 , a ring network type boundary metering integrated protection device with self-healing function, includes a box body 1, an installation box 3, two support plates 2, a control unit 32, a current and voltage acquisition module 33, a communication module 34, a boundary switch 35, a metering module 36 and a self-healing execution module 37. The two support plates 2 are both slidably installed on the inner side wall of the box body 1. Two bidirectional lead screws 21 arranged in parallel are rotatably installed on the top inner wall and the bottom inner wall of the box body 1. Both of the two bidirectional lead screws 21 are threadedly connected with the two support plates 2. Belt pulleys 22 are fixedly sleeved on both of the two bidirectional lead screws 21. The same belt 23 is drivingly connected between the two belt pulleys 22, which can control the two support plates 2 to move in opposite directions when the bidirectional lead screws 21 rotate, and can simultaneously realize the synchronous rotation of the two bidirectional lead screws 21, so as to well adapt to the installation of equipment of different sizes. Two bidirectional lead screws 21 arranged in parallel are rotatably installed on the top inner wall and the bottom inner wall of the box body 1. Both of the two bidirectional lead screws 21 are threadedly connected with the two support plates 2. Belt pulleys 22 are fixedly sleeved on both of the two bidirectional lead screws 21. The same belt 23 is drivingly connected between the two belt pulleys 22, which can control the two support plates 2 to move in opposite directions when the bidirectional lead screws 21 rotate, and can simultaneously realize the synchronous rotation of the two bidirectional lead screws 21, so as to well adapt to the installation of equipment of different sizes. A motor 24 is fixedly installed on one side inner wall of the box body 1. A worm 25 is axially fixedly connected to the output shaft of the motor 24. A worm gear 26 is fixedly sleeved on the bidirectional lead screw 21 close to the motor 24. The worm 25 is meshed with the worm gear 26, which can provide driving force for the bidirectional lead screw 21 and eliminate the need for operators to manually rotate the bidirectional lead screw 21; The installation box 3 is snap-fitted on the lower support plate 2. A plurality of sliding rods 41 are fixedly installed on the bottom side of the upper support plate 2. Fixing blocks are slidably installed on the plurality of sliding rods 41. A limiting clamping plate 4 snap-fitted on the top of the installation box 3 is fixedly installed on the plurality of fixing blocks. Springs 42 are fixedly installed on the plurality of fixing blocks. The top ends of the plurality of springs 42 are fixedly connected to the upper support plate 2. The plurality of springs 42 are respectively movably sleeved on the outer sides of the corresponding sliding rods 41. The sliding rods 41, the support plates 2, the fixing blocks and the limiting clamping plate 4 are all made of materials with good heat conductivity, which can cooperate with the two support plates 2 to provide limit for the installation box 3, can well adapt to the installation of the installation box 3 with different heights, and can transfer the heat transmitted through the installation box 3 to the support plate 2; Radiating plates 5 are fixedly installed at both the top and bottom of the box body 1. On one side of the two radiating plates 5 close to each other, a plurality of heat conducting plates 51 extending into the box body 1 are fixedly installed. Flexible heat conducting sheets 52 connected to the corresponding supporting plates 2 are fixedly installed on the plurality of heat conducting plates 51, which can discharge the heat transferred to the supporting plates 2 out of the box body 1 without affecting the adjustment of the height of the supporting plates 2. A plurality of partition plates 31 are fixedly installed in the installation box 3. The control unit 32, the current and voltage acquisition module 33, the communication module 34, the sectionalizing switch 35, the metering module 36, and the self-healing execution module 37 are respectively fixedly installed on the corresponding partition plates 31. The control unit 32, as the core component, connects and coordinates the work of other modules. Based on advanced fault diagnosis algorithms (such as: artificial neural network fault diagnosis algorithm, Bayesian network fault diagnosis algorithm, or fault diagnosis algorithm based on wavelet transform), the control unit 32 locates the fault point by combining the real-time collected data and the power grid topology structure information. The current and voltage acquisition module 33 collects the current and voltage signals in the line in real time through the current transformer and transmits them to the control unit 32. The communication module 34 is responsible for data transmission between the device and external devices. The communication module 34 adopts a new type of adaptive communication protocol (such as: Adaptive Synchronous Real-Time Communication Protocol (ASTP), 5G-based Massive Machine-Type Communication Optimization Protocol, or Software-Defined Network (SDN) communication protocol), which can automatically adjust communication parameters according to the real-time status of the communication network and has good compatibility, enabling seamless communication with devices from different manufacturers. The sectionalizing switch 35 is used to divide the user side and the power grid side and can quickly cut off the fault area during a fault. The metering module 36 realizes accurate metering of the electricity quantity. The self-healing execution module 37 executes corresponding self-healing operations according to the instructions of the control unit 32. The self-healing execution module 37 selects the optimal power supply restoration plan according to a variety of pre-stored self-healing strategies and the real-time power grid operation conditions. Among them, data interaction between the internal functional modules of the device is carried out through a high-speed and reliable internal communication bus. In this embodiment, a cooling fan 11 is fixedly installed on one side of the box body 1, and an air inlet is provided on the other side of the box body 1. A net plate and a dehumidifying filter plate are fixedly installed in the air inlet, which can prevent sundries from entering the box body 1 and also prevent the moisture in the humid air from entering the box body 1.

[0026] Working principle: When the power system is operating normally, the current and voltage acquisition module 33 continuously monitors the line parameters and transmits the data to the control unit 32. The control unit 32 analyzes and processes this data, and at the same time maintains communication with the master station system through the communication module 34 to obtain real-time grid operation status information. The metering module 36 accurately measures the electricity quantity according to the preset metering rules. Once a fault occurs in the distribution network, the current and voltage acquisition module 33 detects abnormal current and voltage changes and quickly transmits the fault signal to the control unit 32. Based on advanced fault diagnosis algorithms, the control unit 32 combines the real-time acquired data and the grid topology structure information to quickly and accurately locate the fault point. Subsequently, the control unit 32 issues a tripping instruction to the sectionalizing switch 35 to isolate the fault area and prevent the fault from spreading to other normal areas. After the fault is isolated, the control unit 32 activates the self-healing execution module 37. The self-healing execution module 37 selects the optimal power supply restoration plan according to various pre-stored self-healing strategies and the real-time grid operation conditions. For example, by closing the switch on the standby line or adjusting the states of other switches in the ring network, the rapid power supply restoration of the non-fault area is achieved. At the same time, the communication module 34 timely feeds back the fault information, the fault handling process, and the power supply restoration situation to the master station system for subsequent processing by the operation and maintenance personnel.

[0027] During the operation of the control unit 32, the current and voltage acquisition module 33, the communication module 34, the sectionalizing switch 35, the metering module 36, and the self-healing execution module 37, the generated heat is discharged by means of air cooling under the action of the cooling fan 11. At the same time, the heat generated by the operation of the control unit 32, the current and voltage acquisition module 33, the communication module 34, the sectionalizing switch 35, the metering module 36, and the self-healing execution module 37 is transmitted to the support plate 2 through the partition plate 31, the mounting box 3, the limit clamping plate 4, and the sliding rod 41. The heat absorbed by the support plate 2 is transmitted to the heat dissipation plate 5 through the flexible heat conducting sheet 52 and the heat conducting plate 51, so as to achieve efficient heat dissipation and further ensure the long-term stable operation of the device.

[0028] When it is necessary to disassemble components such as the mounting box 3, start the motor 24. The motor 24 drives the left bidirectional lead screw 21 to rotate through the worm 25 and the worm gear 26. Under the transmission of the belt pulley 22 and the belt 23, the right bidirectional lead screw 21 can be kept rotating synchronously, so as to control the two support plates 2 to move in the direction away from each other, and thus facilitate the removal of the mounting box 3 from between the two support plates 2.

[0029] The above has introduced in detail a ring network type boundary metering integrated protection device with self-healing function provided by the present invention. Specific embodiments are applied in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A ring network type boundary metering integrated protection device with self-healing function, characterized in that: include: A box body (1), an installation box (3), two support plates (2), an adjustment component, a heat conduction buffer component, a heat dissipation component, a control unit (32), a current and voltage acquisition module (33), a communication module (34), a boundary switch (35), a metering module (36) and a self-healing execution module (37); The two support plates (2) are both slidably mounted on the inner side wall of the box body (1), the adjustment component is arranged in the box body (1) and connected to the two support plates (2), the installation box (3) is snap-fitted and mounted on the lower support plate (2), the heat conduction buffer component is arranged on the upper support plate (2) and is adapted to the installation box (3), and the heat dissipation component is arranged on the top and bottom of the box body (1) and is connected to the two support plates (2); A plurality of partitions (31) are fixedly installed in the installation box (3), and the control unit (32), the current and voltage acquisition module (33), the communication module (34), the boundary switch (35), the metering module (36) and the self-healing execution module (37) are respectively fixedly installed on the corresponding partitions (31); The control unit (32), as a core component, connects and coordinates the work of other modules; The current and voltage acquisition module (33) acquires the current and voltage signals in the circuit in real time through the mutual inductor, and transmits them to the control unit (32); The communication module (34) is responsible for data transmission between the device and external equipment; The demarcation switch (35) is used to separate the user side from the grid side and can quickly cut off the fault area in case of a fault; The metering module (36) realizes accurate metering of electric quantity; The self-healing execution module (37) executes corresponding self-healing operations according to the instructions of the control unit (32).

2. According to the ring network type boundary metering integrated protection device with self-healing function described in claim 1, the control unit (32) locates the fault point based on advanced fault diagnosis algorithm, combined with real-time collected data and power grid topology information.

3. According to the ring network type boundary metering integrated protection device with self-healing function described in claim 1, the self-healing execution module (37) selects the optimal power supply restoration plan based on multiple pre-stored self-healing strategies and real-time power grid operation conditions.

4. According to the ring network type boundary metering integrated protection device with self-healing function described in claim 1, the communication module (34) adopts a new adaptive communication protocol, can automatically adjust communication parameters according to the real-time status of the communication network, and has good compatibility, and can achieve seamless communication with equipment from different manufacturers.

5. According to the ring network type boundary metering integrated protection device with self-healing function described in claim 1, data exchange is carried out between the functional modules inside the device through a high-speed and reliable internal communication bus.

6. According to a ring-net type boundary metering integrated protection device with self-healing function as described in claim 1, the adjustment component includes two bidirectional screw rods (21), two pulleys (22) and a belt (23), and two bidirectional screw rods (21) arranged parallel to each other are rotatably installed on the top inner wall and the bottom inner wall of the box body (1), and the two bidirectional screw rods (21) are both threadedly connected to the two support plates (2), and the two bidirectional screw rods (21) are fixedly sleeved with pulleys (22), and the same belt (23) is transmission-connected to the two pulleys (22).

7. According to claim 6, a ring network type boundary metering integrated protection device with self-healing function, the adjustment component also includes a motor (24), a worm (25) and a worm wheel (26), the motor (24) is fixedly installed on the inner wall of one side of the box body (1), the worm (25) is axially fixedly connected to the output shaft of the motor (24), and a worm wheel (26) is fixedly sleeved on the bidirectional lead screw (21) close to the motor (24), and the worm (25) is meshed with the worm wheel (26).

8. According to claim 1, a ring network type boundary metering integrated protection device with self-healing function, the heat conductive buffer component includes multiple sliding rods (41), multiple fixed blocks, a limit card plate (4) and multiple springs (42), multiple sliding rods (41) are fixedly installed on the bottom side of the upper support plate (2), multiple sliding rods (41) are slidably installed with fixed blocks, multiple fixed blocks are fixedly installed with the same limit card plate (4) installed on the top of the installation box (3), multiple fixed blocks are fixedly installed with springs (42), the top ends of multiple springs (42) are fixedly connected to the upper support plate (2), and multiple springs (42) are movably sleeved on the outer sides of corresponding sliding rods (41), and the sliding rods (41), the support plate (2), the fixed blocks and the limit card plate (4) are all made of materials with good thermal conductivity.

9. According to a ring network type boundary metering integrated protection device with self-healing function as described in claim 1, the heat dissipation component includes two heat dissipation plates (5), multiple heat conduction plates (51) and multiple flexible heat conductive sheets (52), the top and bottom of the box body (1) are fixedly installed with heat dissipation plates (5), and the sides of the two heat dissipation plates (5) close to each other are fixedly installed with multiple heat conduction plates (51) extending into the box body (1), and flexible heat conductive sheets (52) connected to corresponding support plates (2) are fixedly installed on the multiple heat conduction plates (51).

10. According to the ring network type boundary metering integrated protection device with self-healing function described in claim 1, a heat dissipation fan (11) is fixedly installed on one side of the box body (1), and an air inlet is opened on the other side of the box body (1), and a mesh plate and a dehumidification filter plate are fixedly installed in the air inlet.

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