Distribution network automation data wireless transmission system

Abstract

A distribution network automation data wireless transmission system disclosed by the present invention comprises a system master station and a plurality of wireless transmission areas, each wireless transmission area comprises a central station and a plurality of power distribution terminals, the central station comprises a wireless network bridge, an independent power supply system and a switch, and the power distribution terminals are connected with the wireless network bridge through the switches. The wireless network bridge sends the information to the central station, and the central station sends the information to the system master station; the mounting mechanism comprises a first mounting plate assembly used for fixing the wireless bridge, a second mounting plate assembly used for being fixedly connected with a wire rod, and a cushioning mechanism arranged between the first mounting plate assembly and the second mounting plate assembly; according to the invention, a point-to-point and point-to-multipoint wireless bridge networking scheme is adopted, the reliability of wireless transmission of distribution network data is effectively improved, and meanwhile, a cushioning installation structure is arranged, so that the stability of wireless equipment after installation is ensured, and external force interference is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of distribution network automation data transmission, and in particular relates to a distribution network automation data wireless transmission system. Background Art

[0002] Distribution network automation can monitor and control the distribution system, detect power supply failures in time, and realize scientific management of the distribution system. An important indicator of the degree of distribution network automation is whether the communication meets the requirements of automation. It is responsible for the connection between equipment and users and automation, plays a linking role, and is responsible for information processing, sending and returning commands, and transmitting all data. Without reliable and effective communication, the distribution network cannot be connected with automation. Therefore, communication technology is the key to distribution automation.

[0003] In the existing technology, the distribution communication system can use a private network or a public network. The communication channel from the distribution master station to the distribution substation is the backbone layer communication network, and the communication channel from the distribution substation to the distribution terminal is the access layer communication network. The backbone layer network can use the existing optical fiber transmission network for expansion, and the access layer network can use a combination of optical fiber private network, wireless private network, wireless public network and other communication methods to build an integrated communication platform.

[0004] Among them, fiber-optic private networks and distribution line carriers are subject to wiring restrictions in some cases. The wiring and rewiring projects are large, the lines are easily damaged, the nodes in the network cannot be moved, and the wiring construction is difficult, expensive, and time-consuming. The wireless public network is easily restricted by factors such as signal strength, bandwidth, and environment, and the application effect is not ideal. Therefore, wireless private networks are currently the fastest and most cost-effective way to achieve distribution automation networking. They are not restricted by regions and can meet the needs of different regions, environments, and fields.

[0005] However, currently a single wireless LAN can only reach a distance of 500 meters and a maximum of 1,000 meters. The actual distance between remote power distribution terminals is far more than this. Secondly, based on the application environment, wireless devices are usually installed outdoors and are easily impacted by external forces, which affects the stability of the wireless devices.

[0006] Therefore, in order to solve the above problems, it is necessary to develop a distribution network automation data wireless transmission system. Summary of the invention

[0007] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a distribution network automation data wireless transmission system, which adopts point-to-point and point-to-multipoint wireless bridge networking solutions to effectively improve the reliability of wireless transmission of distribution network data. The communication range is not limited by environmental conditions, and the network transmission range is broadened. At the same time, a shock-absorbing installation structure is provided to ensure the stability of the wireless device after installation and reduce external force interference.

[0008] The object of the present invention is achieved as follows: a distribution network automation data wireless transmission system, including a system master station and a plurality of wireless transmission areas divided based on geographical information of distribution terminals, the wireless transmission area includes a central station and a plurality of distribution terminals, the central station is connected to the plurality of distribution terminals for point-to-multipoint communication, the central station is connected to the system master station for point-to-point communication, the central station includes a wireless bridge, an independent power supply system, and a switch, the distribution terminal is connected to the wireless bridge via the switch, the wireless bridge sends information to the central station, and the central station sends information to the system master station; Also included is a mounting mechanism for mounting the wireless bridge, the mounting mechanism comprising a first mounting plate assembly for fixing the wireless bridge, a second mounting plate assembly for fixedly connecting to the utility pole, and a shock absorbing mechanism disposed between the first mounting plate assembly and the second mounting plate assembly; Wherein, the first mounting plate assembly includes a fixing plate fixedly connected to the wireless bridge, an arc-shaped plate connected to the top of the fixing plate and extending outward to form an arched structure, and a protective plate fixedly connected to the bottom end of the outer side of the arc-shaped plate and extending downward to the outside of the wireless bridge; The second mounting plate assembly comprises a main support plate and a clamp structure arranged on a side of the main support plate away from the shock absorbing mechanism, and the main support plate is fixedly connected to the wire rod through the clamp structure; The damping mechanism comprises a guide cylinder fixedly arranged on the main support plate, the guide cylinder being arranged with an opening on one side away from the main support plate, a damping spring being fixedly arranged in the guide cylinder along the axial direction of the guide cylinder, a movable guide plate being arranged at one end of the damping spring close to the opening of the guide cylinder, an annular limit plate being arranged at the opening of the guide cylinder, an adaptive contact electrode being arranged between the annular limit plate and the guide plate, the contact electrode being in a normally closed state under the push of the elastic force of the damping spring, a guide rod being fixedly connected to a side of the guide plate close to the opening of the guide cylinder, the other end of the guide rod extending out of the guide cylinder and passing through the annular limit plate to be fixedly connected to a fixing plate of the first mounting plate assembly, an airbag assembly being further arranged between the fixing plate and the main support plate, the inflation port of the airbag assembly being connected to the inflation assembly through a gas pipeline, and an opening and closing type exhaust assembly being further arranged at the exhaust port on the airbag assembly; The main support plate is also provided with a control device electrically connected to the contact electrode, the inflation component and the exhaust component.

[0009] Furthermore, the distance between the power distribution terminal and the central station in the wireless transmission area is less than 20KM, and the total communication bandwidth is less than 310Mbps.

[0010] Furthermore, the distance between the central station and the system main station in the wireless transmission area is less than 130KM.

[0011] Furthermore, the distribution terminals include FTU, DTU, TTU and other distribution automation terminals.

[0012] Furthermore, the independent power supply system is implemented by using solar power supply as a backup power supply.

[0013] Furthermore, the guide plate can be horizontally slidably connected to the inner wall of the guide cylinder.

[0014] Furthermore, the airbag assembly includes a hard support tube fixedly mounted on the main support plate and horizontally arranged toward the fixed plate, and the inflation port and the exhaust port are respectively arranged on the support tube; the airbag assembly also includes a horizontally arranged shaped support spring fixedly connected to one end of the support tube close to the fixed plate, and the other end of the shaped support spring is fixedly connected to an abutment plate, and a telescopic airbag is provided on the outside of the shaped support spring, and the telescopic airbag adopts a corrugated tube structure, and the two ends are respectively fixedly and sealedly connected to the support tube and the abutment plate.

[0015] Furthermore, the exhaust component includes a sealing plug located at the exhaust port and movable up and down in coordination with the exhaust port, an adjusting plate is fixedly provided on the top of the sealing plug, an adjusting rod is provided on one side of the adjusting plate, the adjusting plate is movable up and down on the adjusting rod, a return spring is fixedly provided on the bottom end of the adjusting plate, the return spring is sleeved on the adjusting rod, and an electromagnet adsorption component is also provided between the adjusting plate and the supporting pipe.

[0016] Furthermore, the control device and the inflation component are covered with a protective shell.

[0017] Due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) Based on the geographical information of the power distribution terminal, the wireless transmission area is divided, and a wireless bridge networking method combining point-to-point communication and point-to-multipoint communication is adopted. It is not only easy to set up and build the network, but also easy to manage and has low operation and maintenance costs. It also has high mobility and the communication range is not limited by environmental conditions, which broadens the transmission range of the network; (2) By setting up an installation mechanism and applying a safety protection structure to the wireless bridge based on the outdoor installation application environment, the impact of external destructive forces on the stability and safety of the wireless bridge installation can be effectively reduced, making the installation and operation of the wireless bridge more stable and reliable, and effectively extending the service life of the wireless bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a principle block diagram of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the installation mechanism in the present invention.

[0020] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of part A.

[0021] Figure 4 yes Figure 3 A1 part is an enlarged structural diagram.

[0022] Figure 5 yes Figure 2 The enlarged structural diagram of part B is shown in the figure.

[0023] In the figure: a, system master station b, wireless transmission area c, central station d, power distribution terminal e, wireless bridge f, independent power supply system g, switch; 1. Mounting mechanism 11, first mounting plate assembly 12, second mounting plate assembly 13, shock absorbing mechanism 14, control device 15, protective shell; 11a, fixed plate 11b, curved plate 11c, protective plate; 12a, main support plate 12b, hoop structure; 13a, guide cylinder 13b, shock absorbing spring 13c, guide plate 13d, annular limit plate 13e, contact electrode 13f, guide rod 13g, airbag assembly 13h, gas pipeline 13i, inflation assembly 13j, exhaust assembly; 13g1, supporting pipe 13g2, shaped supporting spring 13g3, abutting plate 13g4, telescopic airbag; 13j1, sealing plug 13j2, adjusting plate 13j3, adjusting rod 13j4, return spring 13j5, electromagnet adsorption assembly. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, a distribution network automation data wireless transmission system includes a system master station a and multiple wireless transmission areas b divided according to the geographical information of the distribution terminals. The distribution terminals d include FTU, DTU, TTU and other distribution automation terminals. The wireless transmission area b includes a central station c and multiple distribution terminals d. The central station c is connected to the multiple distribution terminals d for point-to-multipoint communication. The distance between the distribution terminals d and the central station c is less than 20KM, and the total communication bandwidth is less than 310Mbps. The central station c is connected to the system master station a for point-to-point communication. The distance between the central station c and the system master station a is less than 130KM. The central station c includes A wireless bridge e, an independent power supply system f, and a switch g. The power distribution terminal d is connected to the wireless bridge e through the switch g. The wireless bridge e sends information to the central station c, and the central station c sends information to the system master station a. Specifically, the wireless bridge e includes an outdoor RF ODU module and a POE module. The power distribution terminal d is connected to the POE module through the switch, and the POE module is connected to the outdoor RF ODU module. After the central station receives the information, it is sent to the switch through the POE module, and finally sent to the system master station a. The system master station a may include SCADA and a workstation. Preferably, the independent power supply system f is implemented using a solar power supply as a backup power supply.

[0026] It also includes an installation mechanism 1 for installing the wireless bridge e, the installation mechanism 1 includes a first installation plate assembly 11 for fixing the wireless bridge e, a second installation plate assembly 12 for fixed connection to the pole, and a shock absorbing mechanism 13 arranged between the first installation plate assembly 11 and the second installation plate assembly 12.

[0027] Among them, the first mounting plate assembly 11 includes a fixing plate 11a fixedly connected to the wireless bridge e, and an arc-shaped plate 11b connected to the top of the fixing plate 11a and extending outward to form an arch structure, and a protective plate 11c fixedly connected to the outer bottom end of the arc-shaped plate 11b and extending downward to the outside of the wireless bridge e; the arc-shaped plate 11b and the protective plate 11c together form a cover-type protective structure above and in front of the wireless bridge e to prevent the wireless bridge e from being hit by external force. At the same time, the upper arc-shaped plate 11b is set to an arch structure, which can prevent rainwater from accumulating above the wireless bridge e, reduce the possibility of the wireless bridge e being infiltrated with water and damp, and further improve the protection effect.

[0028] Among them, the second mounting plate assembly 12 includes a main support plate 12a and a clamp structure 12b arranged on the side of the main support plate 12a away from the shock absorbing mechanism 13, and the main support plate 12a is fixedly connected to the pole through the clamp structure 12b; during the specific installation, the distribution terminal d such as FTU, TTU, etc. is mainly installed on the pole. Since the wireless bridge requires the installation point to be selected at a high position, the wireless bridge is usually installed on the top of the pole. If there is a high-voltage line near the top of the pole, a pillar is usually added to the top of the pole to install the wireless bridge. Therefore, based on the installation environment, the clamp structure 12b is used to realize the connection and installation between the entire device and the pole. The clamp structure 12b belongs to the prior art and will not be repeated here.

[0029] The damping mechanism 13 includes a guide cylinder 13a fixedly arranged on the main support plate 12a, the guide cylinder 13a is opened on one side away from the main support plate 12a, a damping spring 13b is fixedly arranged in the guide cylinder 13a along the axial direction of the guide cylinder 13a, a movable guide plate 13c is arranged at one end of the damping spring 13b close to the opening of the guide cylinder 13a, the guide plate 13c can be horizontally slidably connected to the inner wall of the guide cylinder 13a, an annular limiting plate 13d is arranged at the opening of the guide cylinder 13a, and the annular limiting plate 13d and the guide plate A matching contact electrode 13e is arranged between 13c, and the contact electrode 13e is in a normally closed state under the elastic force of the shock-absorbing spring 13b, that is, when there is no external impact and the shock-absorbing mechanism 13 is not in action, the contact electrode 13e is always in an on state under the elastic force of the shock-absorbing spring 13b. A guide rod 13f is fixedly connected to one side of the guide plate 13c close to the opening of the guide cylinder 13a, and the other end of the guide rod 13f extends out of the guide cylinder 13a and passes through the annular limit plate 13d to be fixedly connected to the fixed plate 11a of the first mounting plate assembly 11.

[0030] Among them, an airbag component 13g is also arranged between the fixed plate 11a and the main support plate 12a, the inflation port of the airbag component 13g is connected to the inflation component 13i through the gas pipeline 13h, and the exhaust port on the airbag component 13g is also provided with an opening and closing exhaust component 13j; the airbag component 13g includes a hard support pipe 13g1 fixedly arranged on the main support plate 12a and horizontally arranged toward the fixed plate 11a, and the inflation port and the exhaust port are respectively arranged at On the support tube 13g1; the airbag assembly 13g also includes a horizontally arranged shaped support spring 13g2 fixedly connected to one end of the support tube 13g1 close to the fixed plate 11a, the other end of the shaped support spring 13g2 is fixedly connected to the abutment plate 13g3, and the outer side of the shaped support spring 13g2 is provided with a telescopic airbag 13g4, the telescopic airbag 13g4 adopts a corrugated tube structure, and the two ends are respectively fixedly and sealedly connected to the support tube 13g1 and the abutment plate 13g3.

[0031] The exhaust assembly 13j includes a sealing plug 13j1 located at the exhaust port and adapted to move up and down with the exhaust port, an adjusting plate 13j2 is fixedly provided on the top of the sealing plug 13j1, an adjusting rod 13j3 is provided on one side of the adjusting plate 13j2, the adjusting plate 13j2 is movably provided on the adjusting rod 13j3, a return spring 13j4 is fixedly provided on the bottom end of the adjusting plate 13j2, the return spring 13j4 is sleeved on the adjusting rod 13j3, the adjusting plate An electromagnet adsorption component 13j5 is also provided between 13j2 and the supporting pipe 13g1. During specific implementation, the electromagnet adsorption component 13j5 is energized for adsorption, the adjusting plate 13j2 drives the sealing plug 13j1 to move downward to block the exhaust port, the reset spring 13j4 is compressed, the electromagnet adsorption component 13j5 is powered off and separated, and the adjusting plate 13j2 moves upward under the push of the reset spring 13j4 to reset and separate from the exhaust port, and the exhaust port is opened. This process can be repeated to realize the opening and closing of the exhaust port.

[0032] The main support plate 12a is also provided with a control device 14 electrically connected to the contact electrode 13e, the inflation component 13i and the exhaust component 13j. Preferably, a protective shell 15 is also provided outside the control device 14 and the inflation component 13i.

[0033] In the specific implementation of the present invention, when the first mounting plate assembly 11 is subjected to external force, the guide rod 13f connected thereto pushes the guide plate 13c to slide inside the guide cylinder 13a, the shock absorbing spring 13b is compressed, and the impact force is reduced under the elastic action of the shock absorbing spring 13b, thereby achieving the shock absorbing effect. At this time, the contact electrode 13e is separated during the sliding process of the guide plate 13c, and the control device 14 receives the separation signal of the contact electrode 13e, and can determine that an external force impact occurs. At the same time, due to the continuity of the elastic action of the spring, when the shock absorbing spring 13b starts to When in action, under the combined action of external force and the elastic force of the shock-absorbing spring 13b, the guide plate 13c does not stop its back-and-forth movement all at once, but will continue to move back and forth for a period of time. During this process, the contact electrode 13e will be intermittently connected. The control device 14 can also judge the size of the impact force at this time through the connection interval length, connection frequency and other data of the contact electrode 13e in this process, so as to determine whether to start the airbag assembly 13g, so as to avoid further increase in vibration damage due to the reaction of the elastic properties of the shock-absorbing spring 13b itself.

[0034] When the control device 14 determines that the impact force is large, the exhaust component 13j can be closed to put the airbag component 13g in a closed state, and then the inflation component 13i is started to inflate the airbag component 13g to gradually expand the airbag component 13g, gradually reducing the movable distance between the main support plate 12a and the fixed plate 11a, that is, gradually reducing the movable distance between the fixed plate 11a, the guide rod 13f and the guide plate 13c, thereby achieving the purpose of gradually reducing the vibration amplitude. When the inflation is completed, the exhaust component 13j can be opened to exhaust. When the vibration is large, multiple inflation and exhaust processes can be carried out according to the actual situation, so as to achieve shock absorption while avoiding further damage and effectively reduce the damage.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the specific implementation modes of the present invention can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A distribution network automation data wireless transmission system, Features: It comprises a system main station (a) and a plurality of wireless transmission areas (b) divided according to geographical information of the distribution terminals, wherein the wireless transmission area (b) comprises a central station (c) and a plurality of distribution terminals (d), the central station (c) is connected to the plurality of distribution terminals (d) by point-to-multipoint communication, the central station (c) is connected to the system main station (a) by point-to-point communication, the central station (c) comprises a wireless bridge (e), an independent power supply system (f), and a switch (g), the distribution terminal (d) is connected to the wireless bridge (e) via the switch (g), the wireless bridge (e) sends information to the central station (c), and the central station (c) sends information to the system main station (a); Also included is a mounting mechanism (1) for mounting the wireless network bridge (e), the mounting mechanism (1) comprising a first mounting plate assembly (11) for fixing the wireless network bridge (e), a second mounting plate assembly (12) for fixedly connecting to a utility pole, and a shock absorbing mechanism (13) arranged between the first mounting plate assembly (11) and the second mounting plate assembly (12); The first mounting plate assembly (11) comprises a fixing plate (11a) fixedly connected to the wireless bridge (e), an arc-shaped plate (11b) connected to the top of the fixing plate (11a) and extending outwards to form an arched structure, and a protective plate (11c) fixedly connected to the outer bottom end of the arc-shaped plate (11b) and extending downwards to the outside of the wireless bridge (e); The second mounting plate assembly (12) comprises a main support plate (12a) and a clamp structure (12b) arranged on a side of the main support plate (12a) away from the shock absorbing mechanism (13), wherein the main support plate (12a) is fixedly connected to the wire rod via the clamp structure (12b); The damping mechanism (13) comprises a guide cylinder (13a) fixedly arranged on a main support plate (12a); the guide cylinder (13a) is opened at one side away from the main support plate (12a); a damping spring (13b) is fixedly arranged in the guide cylinder (13a) along the axial direction of the guide cylinder (13a); a movable guide plate (13c) is arranged at one end of the damping spring (13b) close to the opening of the guide cylinder (13a); an annular limiting plate (13d) is arranged at the opening of the guide cylinder (13a); a matching contact electrode (13e) is arranged between the annular limiting plate (13d) and the guide plate (13c); the contact electrode (13e) is arranged at The guide plate (13c) is in a normally closed state under the elastic force of the shock absorbing spring (13b); a guide rod (13f) is fixedly connected to one side of the guide plate (13c) close to the opening of the guide cylinder (13a); the other end of the guide rod (13f) extends out of the guide cylinder (13a) and passes through the annular limit plate (13d) to be fixedly connected to the fixed plate (11a) of the first mounting plate assembly (11); an air bag assembly (13g) is also provided between the fixed plate (11a) and the main support plate (12a); the inflation port of the air bag assembly (13g) is connected to the inflation assembly (13i) via a gas pipeline (13h); and an openable and closable exhaust assembly (13j) is also provided at the exhaust port on the air bag assembly (13g); The main support plate (12a) is also provided with a control device (14) electrically connected to the contact electrode (13e), the inflation component (13i) and the exhaust component (13j).

2. A distribution network automation data wireless transmission system according to claim 1, Features: The distance between the power distribution terminal (d) and the central station (c) in the wireless transmission area (b) is less than 20KM, and the total communication bandwidth is less than 310Mbps.

3. A distribution network automation data wireless transmission system according to claim 1, Features: The distance between the central station (c) in the wireless transmission area (b) and the system main station (a) is less than 130 km.

4. A distribution network automation data wireless transmission system according to claim 1, Features: The power distribution terminal (d) includes FTU, DTU and TTU.

5. A distribution network automation data wireless transmission system according to claim 1, Features: The independent power supply system (f) is implemented as a backup power supply using a solar power supply.

6. A distribution network automation data wireless transmission system according to claim 1, Features: The guide plate (13c) can be horizontally slidably connected to the inner wall of the guide cylinder (13a).

7. A distribution network automation data wireless transmission system according to claim 1, Features: The airbag assembly (13g) comprises a hard support pipe (13g1) fixedly arranged on the main support plate (12a) and arranged horizontally in the direction of the fixed plate (11a), and the inflation port and the exhaust port are respectively arranged on the support pipe (13g1); the airbag assembly (13g) further comprises a horizontally arranged shaped support spring (13g2) fixedly connected to one end of the support pipe (13g1) close to the fixed plate (11a), the other end of the shaped support spring (13g2) is fixedly connected to an abutment plate (13g3), and the outer portion of the shaped support spring (13g2) is provided with a telescopic airbag (13g4), and the telescopic airbag (13g4) adopts a corrugated tube structure, and the two ends are respectively fixedly and sealedly connected to the support pipe (13g1) and the abutment plate (13g3).

8. A distribution network automation data wireless transmission system according to claim 1, Features: The exhaust assembly (13j) comprises a sealing plug (13j1) located at the exhaust port and adapted to move up and down with the exhaust port; an adjustment plate (13j2) is fixedly provided at the top of the sealing plug (13j1); an adjustment rod (13j3) is provided on one side of the adjustment plate (13j2); the adjustment plate (13j2) is movably provided on the adjustment rod (13j3) up and down; a return spring (13j4) is fixedly provided at the bottom end of the adjustment plate (13j2); the return spring (13j4) is sleeved on the adjustment rod (13j3); and an electromagnet adsorption assembly (13j5) is further provided between the adjustment plate (13j2) and the supporting pipe (13g1).

9. A distribution network automation data wireless transmission system according to claim 1, Features: The control device (14) and the inflation component (13i) are also covered with a protective shell (15) on the outside.

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