Intelligent ring main unit special for wind power

Abstract

The invention discloses an intelligent ring main unit special for wind power, and belongs to the technical field of ring main units, the intelligent ring main unit special for wind power comprises a mechanism chamber body, one side of the mechanism chamber body is fixedly provided with an air box, and the other side of the mechanism chamber body is rotatably provided with a mechanism chamber opening and closing door; a module mechanism adopting an assembled building block structure is arranged outside the mechanism chamber body, and a control mechanism for ensuring stable operation of equipment under a high-load condition is arranged inside the mechanism chamber body. By arranging the module mechanism and adopting the assembly type building block structure, limitation of the diameter of a wind power tower body can be avoided, all the components can freely enter and exit from the tower drum door of the wind power generation tower, the size is small, the weight is light, the tower drum door is suitable for the limited installation space in the wind power generation tower, installation and disassembly are easy, and installation and disassembly in the narrow space are convenient; the maintenance efficiency is improved, and the flexibility and expansibility of the equipment are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ring main unit, and in particular relates to a special intelligent ring main unit for wind power. Background Art

[0002] A ring main unit is a group of electrical equipment that is installed in a metal or non-metallic insulating cabinet or made into an assembled interval ring main unit. Its core part uses load switches and fuses. It has the advantages of simple structure, small size, low price, improved power supply parameters and performance, and power supply safety. The wind power dedicated intelligent ring main unit is a power equipment used in wind power generation systems. It integrates advanced intelligent functions to ensure efficient, stable and safe operation of the power system. In summary, the wind power dedicated intelligent ring main unit is an indispensable key equipment in the wind power generation system.

[0003] The existing ring main unit shell is an integrated structure with a large overall size, while the diameter of the wind turbine tower is limited, making it inconvenient to install the ring main unit inside the wind turbine tower, which is not conducive to the rapid installation and maintenance of the equipment in a small space, reducing the practicality of the ring main unit.

[0004] Therefore, there is an urgent need to provide a wind power-specific intelligent ring main unit to solve the above problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a wind power-specific intelligent ring main unit.

[0006] The technical solution adopted to solve the above technical problems is: a wind power dedicated intelligent ring network cabinet, including a mechanism room body, an air box is fixedly installed on one side of the mechanism room body, and a mechanism room switch door is rotatably installed on the other side of the mechanism room body, a module mechanism with an assembled building block structure is arranged on the outside of the mechanism room body, a control mechanism for ensuring stable operation of the equipment under high load conditions is arranged inside the mechanism room body, and a switch mechanism is arranged inside the air box to reduce the amount of submarine cables and the workload of laying through integrated design.

[0007] Preferably, the modular mechanism includes an instrument box body fixed to the top of the mechanism room body, an instrument box switch door is rotatably installed on one side of the instrument box body, transparent glass is fixedly installed inside the instrument box switch door, and various instruments, sensors and communication equipment are installed in the instrument box body.

[0008] Through the above technical solution, various instruments and sensors are installed in the instrument box body for real-time monitoring of the operating status of the ring network cabinet, and a display device is provided to intuitively display the monitored data, so that the operation and maintenance personnel can quickly understand the working status of the ring network cabinet. When an abnormal situation is detected, the protection device in the instrument box body will act quickly to cut off the fault circuit, prevent the fault from expanding, and protect the power equipment from damage. The instrument box body can also communicate with the upper-level monitoring system or distribution automation system to realize remote monitoring and control, thereby reducing the frequency and intensity of manual inspections, reducing operation and maintenance costs, and improving the accuracy and efficiency of inspections.

[0009] Preferably, a base shell body is fixedly mounted on the bottom end of the mechanism chamber body, a base shell switch door is rotatably mounted on one side of the base shell body, and an infrared temperature measuring window is fixedly mounted inside the base shell switch door.

[0010] Through the above technical scheme, the base shell body is composed of multiple side panels, beams, insulating plates, pressure relief plates and cable sealing plates to form a basic cabinet frame. These components are formed by bending aluminum-zinc coated plates and cold-rolled steel plates to ensure the strength and durability of the structure, and are easy to disassemble and install, so that operation and maintenance personnel can easily inspect and maintain the ring network cabinet. There are also multiple mounting holes or fixing points on the base shell body, which are used to firmly connect the ring network cabinet to the ground or other structures, ensuring the stability of the ring network cabinet during installation and use, preventing external objects from directly hitting the internal components of the ring network cabinet, reducing equipment damage or failure caused by accidental collisions, and at the same time preventing dust and moisture from entering the ring network cabinet to a certain extent, protecting internal components from corrosion and damage, helping to quickly dissipate heat inside the ring network cabinet, maintaining the normal operating temperature of the equipment, and extending the service life of the equipment.

[0011] Preferably, the control mechanism comprises a circuit breaker module fixed to one side of the inner wall of the switch door of the mechanism chamber, and a pressure gauge having one end penetrating through and extending to the inside of the switch door of the mechanism chamber is fixedly installed inside the gas box.

[0012] Through the above technical solution, the circuit breaker module includes a vacuum arc extinguishing chamber, insulating parts, conductive parts and insulating pull rods. These components work together to ensure that the circuit breaker module can operate stably under various working conditions, thereby realizing the connection and disconnection of the circuit, and quickly cutting off the circuit in the event of a fault to protect the safety of the system. The pressure gauge is used to monitor the air pressure inside the gas box in real time to ensure that it is in a safe and stable operating state, thereby ensuring the normal operation of the power system.

[0013] Preferably, a manual isolation module is fixedly installed on the other side of the inner wall of the switch door of the mechanism room, an indicator sign is fixedly installed on the movable end of the manual isolation module, and one side of the manual isolation module is fixedly installed.

[0014] Through the above technical solution, the manual isolation module is a key component in the ring main unit for realizing circuit isolation. It allows the operator to manually disconnect the circuit when necessary to ensure the safe progress of maintenance and overhaul work. The indicator is used to display whether the isolating switch or the grounding switch has been correctly locked to prevent safety accidents caused by misoperation. The mechanism control module can drive the isolating switch and the grounding switch to perform corresponding actions according to the instructions of the operator or the instructions of the automatic control system to realize the connection and disconnection of the circuit.

[0015] Preferably, the switch mechanism comprises a circuit breaker switch fixed to the inner wall of the gas box, and side expansion sleeves are fixedly installed on both sides of the top of the circuit breaker switch, and the side expansion sleeves are fixedly connected to the inside of the gas box through a side sleeve reinforcement plate.

[0016] Through the above technical solution, the circuit breaker module and the manual isolation module can respectively drive the circuit breaker switch to connect and disconnect the circuit to protect the power system from overload and short circuit hazards. The side expansion bushing allows the ring network cabinet to be connected and expanded with other equipment or cabinets, and is made of epoxy resin to ensure its stability and reliability in high-voltage environments.

[0017] Preferably, three three-phase copper rods are fixedly installed at the bottom end of the circuit breaker switch, one end of the three-phase copper rod is fixedly installed with a double-pass sleeve with one end passing through and extending to the inside of the base shell body, and an explosion-proof valve is fixedly installed on the inner bottom wall of the gas box.

[0018] Through the above technical solution, the cable connector is connected to the circuit breaker switch through a double-pass bushing and a three-phase copper rod. The three-phase copper rod is made of high-purity copper material to ensure good conductivity and sufficient mechanical strength. The double-pass bushing is provided with a second connecting section to prevent the mismatch of cable connectors from different manufacturers during the addition process. The explosion-proof valve can prevent explosions caused by excessive pressure when a fault occurs inside the ring network cabinet.

[0019] The beneficial effects of the present invention are as follows:

[0020] (1) The present invention is provided with a modular structure and adopts an assembled building block structure, which is not limited by the diameter of the wind power tower body, so that each component can freely enter and exit the wind power tower door. It is small in size and light in weight to adapt to the limited installation space in the wind power tower, easy to install and disassemble, convenient to install and disassemble in a small space, improve maintenance efficiency, and improve the flexibility and scalability of the equipment;

[0021] (2) The present invention realizes a more flexible wind turbine topology route design by providing a control mechanism and a switch mechanism and integrating the isolating switch with the circuit breaker. This integrated design reduces the use of submarine cables and the workload of laying cables, and reduces the system cost. The vacuum arc chamber technology is used inside the ring network cabinet, which effectively improves the electrical life and operational reliability. This technology is suitable for frequent operation occasions and ensures the stable operation of the equipment under high load conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a stereogram of the present invention;

[0023] Figure 2 It is a schematic diagram of the front cross-sectional structure of the mechanism chamber body of the present invention;

[0024] Figure 3 It is a schematic diagram of the side cross-sectional structure of the mechanism chamber body and the base shell body of the present invention;

[0025] Figure 4 It is a schematic diagram of the rear cross-sectional structure of the mechanism chamber body of the present invention;

[0026] Figure 5 It is a schematic structural diagram of the control mechanism and the switch mechanism of the present invention from a first viewing angle;

[0027] Figure 6 It is a schematic structural diagram of the control mechanism and the switch mechanism of the present invention from a second viewing angle.

[0028] Figure numerals: 1. Mechanism room body; 2. Gas box; 3. Mechanism room switch door; 4. Module mechanism; 401. Instrument box body; 402. Instrument box switch door; 403. Transparent glass; 404. Base shell body; 405. Base shell switch door; 406. Infrared temperature measurement window; 5. Control mechanism; 501. Circuit breaker module; 502. Pressure gauge; 503. Manual isolation module; 504. Signboard; 505. Mechanism control module; 6. Switch mechanism; 601. Circuit breaker switch; 602. Side expansion bushing; 603. Three-phase copper rod; 604. Double-way bushing; 605. Explosion-proof valve. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] like Figure 1-Figure 6As shown, the wind power dedicated intelligent ring network cabinet of this embodiment includes a mechanism room body 1, a gas box 2 is fixedly installed on one side of the mechanism room body 1, a mechanism room switch door 3 is rotatably installed on the other side of the mechanism room body 1, and a module mechanism 4 with an assembled building block structure is arranged outside the mechanism room body 1. The module mechanism 4 includes an instrument box body 401 fixed to the top of the mechanism room body 1, an instrument box switch door 402 is rotatably installed on one side of the instrument box body 401, and a transparent glass 403 is fixedly installed inside the instrument box switch door 402. Various instruments are installed in the instrument box body 401. , sensors and communication equipment, a base shell body 404 is fixedly installed at the bottom of the mechanism room body 1, a base shell switch door 405 is rotatably installed on one side of the base shell body 404, an infrared temperature measurement window 406 is fixedly installed inside the base shell switch door 405, and various instruments and sensors are installed in the instrument box body 401 for real-time monitoring of the operating status of the ring network cabinet, and a display device is provided to intuitively display the monitored data, so that the operation and maintenance personnel can quickly understand the working status of the ring network cabinet. When an abnormal situation is detected, the protection device in the instrument box body 401 will act quickly, Cut off the fault circuit, prevent the fault from expanding, and protect the power equipment from damage. The instrument box body 401 can also communicate with the upper monitoring system or the distribution automation system to realize remote monitoring and control, thereby reducing the frequency and intensity of manual inspections, reducing operation and maintenance costs, and improving the accuracy and efficiency of inspections. The base shell body 404 is composed of multiple side panels, beams, insulation panels, pressure relief panels and cable sealing panels to form a basic cabinet frame. These components are formed by bending aluminum-zinc plates and cold-rolled steel plates to ensure the strength and durability of the structure, and are easy to disassemble and install, so that operation and maintenance personnel can easily inspect and maintain the ring network cabinet. There are also multiple mounting holes or fixing points on the base shell body 404, which are used to firmly connect the ring network cabinet to the ground or other structures, ensuring the stability of the ring network cabinet during installation and use, preventing external objects from directly hitting the internal components of the ring network cabinet, and reducing equipment damage or failures caused by accidental collisions. At the same time, it can prevent dust and moisture from entering the ring network cabinet to a certain extent, protect internal components from corrosion and damage, help the heat inside the ring network cabinet to quickly dissipate, maintain the normal operating temperature of the equipment, and extend the service life of the equipment.

[0031] like Figure 2-Figure 5As shown, the interior of the mechanism room body 1 is provided with a control mechanism 5 to ensure the stable operation of the equipment under high load conditions, the control mechanism 5 includes a circuit breaker module 501 fixed to one side of the inner wall of the mechanism room switch door 3, a pressure gauge 502 with one end penetrating and extending to the inside of the mechanism room switch door 3 is fixedly installed inside the gas box 2, a manual isolation module 503 is fixedly installed on the other side of the inner wall of the mechanism room switch door 3, an indicator sign 504 is fixedly installed on the movable end of the manual isolation module 503, a mechanism control module 505 is fixedly installed on one side of the manual isolation module 503, the circuit breaker module 501 includes a vacuum arc extinguishing chamber, an insulating member, a conductive member and an insulating pull rod, these components work together to ensure that the circuit breaker module 501 can operate stably under various working conditions, and the circuit breaker module 501 can be operated stably under various working conditions. In order to realize the connection and disconnection of the circuit and quickly cut off the circuit in case of a fault to protect the safety of the system, the pressure gauge 502 is used to monitor the air pressure inside the gas box 2 in real time to ensure that it is in a safe and stable operating state and to ensure the normal operation of the power system. The manual isolation module 503 is a key component in the ring network cabinet for realizing circuit isolation. It allows the operator to manually disconnect the circuit when necessary to ensure the safe progress of maintenance and inspection work. The indicator sign 504 is used to display whether the isolating switch or the grounding switch has been correctly locked to prevent safety accidents caused by misoperation. The mechanism control module 505 can drive the isolating switch and the grounding switch to perform corresponding actions according to the instructions of the operator or the instructions of the automatic control system to realize the connection and disconnection of the circuit.

[0032] like Figure 3-Figure 6 As shown, the interior of the gas box 2 is provided with a switch mechanism 6 which reduces the amount of submarine cables and the workload of laying through an integrated design. The switch mechanism 6 includes a circuit breaker switch 601 fixed to the inner wall of the gas box 2. Side expansion sleeves 602 are fixedly installed on both sides of the top of the circuit breaker switch 601. The side expansion sleeves 602 are fixedly connected to the inside of the gas box 2 through a side sleeve reinforcement plate. Three three-phase copper rods 603 are fixedly installed at the bottom end of the circuit breaker switch 601. One end of the three-phase copper rod 603 is fixedly installed with a double-pass sleeve 604 having one end penetrating and extending to the inside of the base shell body 404. An explosion-proof valve 605 is fixedly installed on the inner bottom wall of the gas box 2. The circuit breaker module 501 and the manual isolation module 503 can drive the circuit breaker switch respectively. 601 connects and disconnects the circuit to protect the power system from overload and short circuit. The side expansion bushing 602 allows the ring main unit to be connected and expanded with other equipment or cabinets, and is made of epoxy resin to ensure its stability and reliability under high voltage environment. The cable connector is connected to the circuit breaker switch 601 through the double-pass bushing 604 and the three-phase copper rod 603. The three-phase copper rod 603 is made of high-purity copper material to ensure good conductivity and sufficient mechanical strength. The double-pass bushing 604 is provided with a second connecting section to prevent the problem of mismatching of cable connectors from different manufacturers during the process of additional configuration. The explosion-proof valve 605 can prevent explosion due to excessive pressure when a fault occurs inside the ring main unit.

[0033] The working principle of this embodiment is as follows: the mechanism room body 1, the air box 2, the instrument box body 401 and the base shell body 404 adopt a modular design, and each component can freely enter and exit the tower door of the wind turbine, which is convenient for installation and disassembly in a small space, thereby improving maintenance efficiency. Various instruments and sensors are installed in the instrument box body 401 for real-time monitoring of the operating status of the ring network cabinet, and a display device is provided to intuitively display the monitored data, so that the operation and maintenance personnel can quickly understand the working status of the ring network cabinet. When an abnormal situation is detected, the protection device in the instrument box body 401 will act quickly to cut off the fault circuit, prevent the fault from expanding, and protect the power equipment from damage. The instrument box body 401 can also communicate with the upper monitoring system or the distribution automation system. Trust, realize remote monitoring and control, thereby reducing the frequency and intensity of manual inspections, reducing operation and maintenance costs, and improving the accuracy and efficiency of inspections. The base shell body 404 is composed of multiple side panels, beams, insulation panels, pressure relief panels and cable sealing panels to form a basic cabinet frame. These components are formed by bending aluminum-zinc plates and cold-rolled steel plates to ensure the strength and durability of the structure, and are easy to disassemble and install, so that operation and maintenance personnel can easily inspect and maintain the ring network cabinet. There are also multiple mounting holes or fixing points on the base shell body 404, which are used to firmly connect the ring network cabinet to the ground or other structures, ensuring the stability of the ring network cabinet during installation and use, preventing external objects from directly hitting the internal components of the ring network cabinet, and reducing equipment caused by accidental collisions. damage or failure, and at the same time, it can prevent dust and moisture from entering the ring network cabinet to a certain extent, protect internal components from corrosion and damage, help the heat inside the ring network cabinet to dissipate quickly, maintain the normal operating temperature of the equipment, and extend the service life of the equipment. The circuit breaker module 501 and the manual isolation module 503 can respectively drive the circuit breaker switch 601 to connect and disconnect the circuit to protect the power system from overload and short circuit hazards. The indicator sign 504 is used to display whether the isolation switch or the grounding switch has been correctly locked to prevent safety accidents caused by misoperation. The mechanism control module 505 can drive the isolation switch and the grounding switch to perform corresponding actions according to the instructions of the operator or the instructions of the automatic control system to realize the connection and disconnection of the circuit. The barometer 502 is used The air pressure inside the gas box 2 is monitored in real time to ensure that it is in a safe and stable operating state and to ensure the normal operation of the power system. When a short circuit occurs in the box or a large current is disconnected, an arc is generated, causing the temperature and pressure in the box to rise sharply. When the pressure exceeds the tolerance limit of the explosion-proof film, the explosion-proof valve 605 ruptures and the pressure is released to protect the electrical components in the cabinet. The side expansion sleeve 602 allows the ring network cabinet to be connected and expanded with other equipment or cabinets, and is made of epoxy resin to ensure its stability and reliability under high-voltage environments. The cable connector is connected to the circuit breaker switch 601 through a double-pass sleeve 604 and a three-phase copper rod 603. The double-pass sleeve 604 is provided with a second connecting section to prevent the problem of cable connectors from different manufacturers not matching during the additional configuration.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A wind power dedicated intelligent ring main unit, comprising a mechanism room body (1), characterized in that: An air box (2) is fixedly mounted on one side of the mechanism room body (1), a mechanism room switch door (3) is rotatably mounted on the other side of the mechanism room body (1), a module mechanism (4) with an assembled building block structure is arranged outside the mechanism room body (1), a control mechanism (5) for ensuring stable operation of the equipment under high load conditions is arranged inside the mechanism room body (1), and a switch mechanism (6) for reducing the amount of submarine cables and the amount of laying work through integrated design is arranged inside the air box (2).

2. The wind power dedicated intelligent ring main unit according to claim 1 is characterized in that: The module mechanism (4) comprises an instrument box body (401) fixed to the top of the mechanism room body (1); an instrument box switch door (402) is rotatably mounted on one side of the instrument box body (401); transparent glass (403) is fixedly mounted inside the instrument box switch door (402); and various instruments, sensors and communication equipment are installed inside the instrument box body (401).

3. The wind power dedicated intelligent ring main unit according to claim 2 is characterized in that: A base shell body (404) is fixedly mounted on the bottom end of the mechanism chamber body (1), a base shell switch door (405) is rotatably mounted on one side of the base shell body (404), and an infrared temperature measurement window (406) is fixedly mounted inside the base shell switch door (405).

4. The wind power dedicated intelligent ring main unit according to claim 1, characterized in that: The control mechanism (5) comprises a circuit breaker module (501) fixed to one side of the inner wall of the mechanism chamber switch door (3), and a pressure gauge (502) having one end penetrating through and extending into the mechanism chamber switch door (3) is fixedly installed inside the gas box (2).

5. The wind power dedicated intelligent ring main unit according to claim 4 is characterized in that: A manual isolation module (503) is fixedly mounted on the other side of the inner wall of the mechanism room switch door (3), an indicator sign (504) is fixedly mounted on the movable end of the manual isolation module (503), and a mechanism control module (505) is fixedly mounted on one side of the manual isolation module (503).

6. The wind power dedicated intelligent ring main unit according to claim 3 is characterized in that: The switch mechanism (6) comprises a circuit breaker switch (601) fixed to the inner wall of the gas box (2), and side expansion sleeves (602) are fixedly installed on both sides of the top of the circuit breaker switch (601), and the side expansion sleeves (602) are fixedly connected to the inside of the gas box (2) through a side sleeve reinforcement plate.

7. The wind power-specific intelligent ring main unit according to claim 6, characterized in that: Three three-phase copper rods (603) are fixedly mounted on the bottom end of the circuit breaker switch (601), one end of the three-phase copper rod (603) is fixedly mounted with a double-pass sleeve (604) having one end penetrating through and extending into the interior of the base shell body (404), and an explosion-proof valve (605) is fixedly mounted on the inner bottom wall of the gas box (2).

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