High-voltage direct-current system energy taking device based on ionic wind effect

Abstract

The invention discloses a high-voltage direct-current system energy taking device based on an ionic wind effect, and relates to the field of energy taking. The device comprises a generator, metal blades, closed metal sawteeth, a metal connecting shaft, a gear set, a wire and a load, and the generator is located at a direct-current high-voltage potential; the closed metal sawteeth need to be fixed to the tail ends of the metal blades, the intensity of an electric field near the needle electrode is high, air is ionized, ions with charges opposite to those of the closed metal sawteeth are pushed out by the closed metal sawteeth, and ionic wind is formed to push the metal blades to rotate. The metal blades and the generator are fixedly connected through the metal connecting shaft and the gear set to drive the generator to rotate. The load is connected with two poles of the generator, and the generator rotates to overcome electromagnetic force to do work and output power to the load. According to the invention, the energy of the high-voltage direct-current system can be taken out only by a high potential without a solar photovoltaic panel and a battery.

Description

Technical Field

[0001] The present invention relates to the technical field of energy acquisition in a high-voltage direct current transmission system, and in particular to an energy acquisition device for a high-voltage direct current system based on an ion wind effect. Background Art

[0002] High-voltage direct current transmission systems are widely used due to their low transmission loss, large transmission capacity, and good stability. With the continuous development of new intelligent power systems, a large number of intelligent monitoring devices will be deployed on high-voltage direct current transmission systems. The key to their stable operation lies in reliable energy supply. Real-time monitoring of transmission system parameters can provide early warning of system abnormalities and ensure the safety and stability of the power grid.

[0003] For high-voltage AC transmission systems, considering the external environment, as well as the volume, cost and power of online monitoring equipment, the main applications at home and abroad are solar energy and battery combination power supply, current transformer (CT) energy extraction, ground wire energy extraction, ultrasonic energy supply, microwave energy supply, etc. For solar energy supply, its advantages are environmental protection and DC output, but its output power is limited, it is easily affected by the external environment, and the solar energy conversion efficiency is low; for CT energy extraction, its advantages are high energy conversion efficiency, easy installation, low cost, and large output power, but it is easily affected by the load current of the transmission system, the transmission distance is short, and there is a power supply dead zone; for ground wire energy extraction, its advantages are not limited by the external environment, high output power, and good economy, but it is easily affected by the load current of the transmission system and there is a risk of lightning strike; for ultrasonic energy supply and microwave energy supply, the current technology is not very mature, its advantages are not affected by the outside world, good stability, but its energy conversion efficiency is relatively low.

[0004] For high-voltage direct current transmission systems, current transformers cannot be used for energy extraction. Most of the online monitoring devices for high-voltage transmission systems with voltage levels of 110kV and above in China use solar energy for energy supply, but the solar energy conversion rate is low, and traditional batteries need to be frequently replaced and repaired, which is costly and inconvenient to maintain. Therefore, the current high-voltage direct current transmission system requires a more convenient direct current energy extraction method. Summary of the invention

[0005] In order to facilitate the energy extraction of the high-voltage direct current transmission system, the present invention provides a high-voltage direct current system energy extraction device based on the ion wind effect, which is used to solve the problem of more convenient energy extraction of the high-voltage direct current transmission system. Thus, the energy of the high-voltage direct current transmission system can be extracted with only a high potential without the need for solar photovoltaic panels and batteries.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A high-voltage direct current system energy acquisition device based on ion wind effect comprises a closed metal sawtooth 1-1, a metal blade 1-2, a metal connecting shaft 1-3, a gear set 1-4, a generator 1-5, a wire 1-6 and a load 1-7; a high-voltage power supply is connected to a metal shell of the generator 1-5, so that the generator 1-5 is at a high potential; the metal blade 1-2 is connected to the shaft of the generator 1-5 through the metal connecting shaft 1-3 and the gear set 1-4; the closed metal sawtooth 1-1 is fixed to the end of the metal blade 1-2, and each part is metal-connected; the load 1-7 is connected to the output ends of the generator 1-5 through the wire 1-6; the closed metal sawtooth 1-1 is also at a high potential; when the closed metal sawtooth 1-1 is at a high potential, the tip of the sawtooth can perform corona discharge, ionize the nearby air, generate ion wind, drive the metal blade 1-2 to rotate through the reaction force, and then drive the generator 1-5 to rotate; the generator 1-5 rotates to overcome the electromagnetic force to do work and output power to the load 1-7.

[0008] The high-voltage power supply must contact the metal casing of the generator 1-5 to ensure that the generator 1-5 is at a high potential, the metal connecting shaft 1-3 and the gear set 1-4 are in good contact with the shaft of the generator 1-5 and the metal blade 1-2, and the closed metal sawtooth 1-1 is in good contact with the metal blade 1-2 to ensure that the closed metal sawtooth 1-1 is at a high potential.

[0009] The metal blades 1-2 used to drive the generator 1-5 to rotate have the characteristics of light weight, good ductility and not easy to deform. They are made of iron, copper or aluminum, and the minimum voltage for the metal blades to drive the generator to rotate is reduced as much as possible.

[0010] The closed metal sawtooth 1-1 used to generate corona discharge needs to have an electric field strength greater than the minimum electric field strength of ionized air (3×10 6 V / m), the number of closed metal teeth 1-1 is ≥2.

[0011] The shape of the closed metal saw teeth 1 - 1 for generating corona discharge is rectangular, triangular or circular, and the directions of the closed metal saw teeth 1 - 1 for generating corona discharge must be consistent, uniformly clockwise or uniformly counterclockwise.

[0012] The tip portion of the outer end of the metal blade 1-2 is ground into an arc shape, and the tip portions of the closed metal sawtooth 1-1 other than the sawtooth are ground into an arc shape.

[0013] The gear set 1-4 is composed of two meshing gears, the large gear is connected to the metal blade 1-2 through the metal connecting shaft 1-3, and the small gear is connected to the shaft of the generator 1-5. The rotation speed of the generator is controlled by changing the gear ratio.

[0014] The generator 1-5 is a DC generator or an AC generator.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) A high-voltage DC system energy extraction device based on the ion wind effect, which combines a generator and a metal blade with a metal needle electrode, has a simple structure;

[0017] 2) The high-voltage direct current system energy extraction device based on the ion wind effect does not require solar photovoltaic panels and batteries, which not only reduces maintenance costs but also improves the reliability of power supply;

[0018] 3) Traditional CT energy extraction can only be used in AC power transmission systems. The high-voltage DC system energy extraction device based on the ion wind effect of the present invention provides the possibility for high-voltage DC power transmission system energy extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the device of the present invention.

[0020] Figure 2 It is a schematic diagram of a metal blade with closed metal serrations according to the present invention. DETAILED DESCRIPTION

[0021] The specific implementation modes of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1 As shown, the present invention is a high-voltage direct current system energy collection device based on the ion wind effect, comprising a closed metal sawtooth 1-1, a metal blade 1-2, a metal connecting shaft 1-3, a gear set 1-4, a generator 1-5, a wire 1-6 and a load 1-7; the high-voltage power supply is connected to the metal shell of the generator 1-5, so that the generator 1-5 is at a high potential, the generator 1-5 is connected to the metal blade 1-2 through the metal connecting shaft 1-3 and the gear set 1-4, the closed metal sawtooth 1-1 is fixed to the end of the metal blade, and all parts are metal connections. The closed metal sawtooth 1-1 is also at a high potential. The curvature radius of the closed metal sawtooth 1-1 is large. When it is at a high potential, the electric field intensity near the needle electrode is high, the air is ionized, and the ions with opposite charges to the closed metal sawtooth 1-1 are pushed out by the closed metal sawtooth 1-1, forming an ion wind to drive the metal blade 1-2 to rotate, and the metal blade 1-2 drives the generator 1-5 to rotate, and the generator 1-5 rotates to overcome the electromagnetic force to do work and output power to the load 1-7.

[0023] like Figure 2 As shown, the end of the metal blade 2-2 used to drive the generator 1-5 to rotate is fixed with a closed metal sawtooth 2-1, and the middle is connected to the metal connecting shaft 2-3, all of which are in metal contact to ensure that they are at the same potential.

[0024] Furthermore, the high voltage power supply must contact the metal casing of the generator 1-5 to ensure that the generator 1-5 is at a high potential, the metal connecting shaft 1-3 and the gear set 1-4 are in good contact with the shaft and metal blades 1-2 of the generator 1-5, and the closed metal sawtooth 1-1 is in good contact with the metal blades 1-2. The benefit is that it can ensure that each part is a metal connection, ensure that the closed metal sawtooth 1-1 is at a high potential, and the tip of the sawtooth can perform corona discharge.

[0025] Furthermore, the metal blades 1-2 used to drive the generator to rotate need to be light in weight, ductile, and not easily deformed, including but not limited to iron, copper, and aluminum. The benefit is that light metal blades have a lower moment of inertia, and their motion state is easier to change, which is beneficial to the starting of the fan blades. Metal materials with good ductility are more convenient and economical to process, and the processing accuracy of materials that are not easily deformed is easy to ensure, and they are less affected by air resistance during rotation.

[0026] Furthermore, the curvature radius of the closed metal saw teeth 1-1 used to generate corona discharge needs to be large enough, and the number of closed metal saw teeth 1-1 is ≥2. The advantage is that the metal saw teeth with a sufficiently large curvature radius are more likely to perform corona discharge and can reduce the corona inception voltage. The more closed metal saw teeth 1-1 there are, the greater the thrust generated by the blades, the greater the starting torque, the easier it is for the fan blades to start, and the fan blades will have a higher speed after stably rotating, and more electrical energy will be generated.

[0027] Furthermore, the shape of the closed metal sawtooth 1-1 used to generate corona discharge includes but is not limited to a rectangle, a triangle, and a circle. The direction of the closed metal sawtooth 1-1 used to generate corona discharge must be consistent, uniformly clockwise or uniformly counterclockwise, to ensure that the thrust direction of the generated ion wind is consistent and the metal blade 1-2 can rotate normally.

[0028] Furthermore, the tip portion of the rotating metal blade 1-2 needs to be polished into an arc shape, and the other tip portions of the closed metal serration 1-1 except the serrations need to be polished into an arc shape. This is beneficial in that it reduces the impact of corona discharge on the metal blade 1-2 and the impact of corona discharge on the other tip portions except the serrations, thereby ensuring normal rotation of the metal blade.

[0029] Furthermore, the load 1-7 is connected to both output ends of the generator 1-5 through the conductor 1-6, ensuring that power is output to the load 1-7.

[0030] Furthermore, the metal blade 1-2 is connected to the shaft of the generator 1-5 through the metal connecting shaft 1-3 and the gear set 1-4. The two gears of the gear set 1-4 are meshed. The large gear is connected to the metal blade 1-2 through the metal connecting shaft 1-3, and the small gear is connected to the generator 1-5. The benefit is that the speed of the generator can be controlled by changing the gear ratio.

Claims

1. A high voltage direct current system energy extraction device based on ion wind effect, characterized in that: The invention comprises a closed metal sawtooth (1-1), a metal blade (1-2), a metal connecting shaft (1-3), a gear set (1-4), a generator (1-5), a wire (1-6) and a load (1-7); a high-voltage power supply is connected to a metal casing of the generator (1-5) so that the generator (1-5) is at a high potential; the metal blade (1-2) is connected to the shaft of the generator (1-5) through the metal connecting shaft (1-3) and the gear set (1-4); the closed metal sawtooth (1-1) is fixed to the end of the metal blade (1-2); All parts are connected by metal, and the load (1-7) is connected to the output ends of the generator (1-5) through the wire (1-6); the closed metal sawtooth (1-1) is also at a high potential. When the closed metal sawtooth (1-1) is at a high potential, the tip of the sawtooth can perform corona discharge, ionize the nearby air, generate ion wind, and drive the metal blade (1-2) to rotate through the reaction force, thereby driving the generator (1-5) to rotate, and the generator (1-5) rotates to overcome the electromagnetic force to do work and output power to the load (1-7).

2. The high voltage direct current system energy extraction device based on ion wind effect according to claim 1 is characterized in that: The high-voltage power supply must contact the metal casing of the generator (1-5) to ensure that the generator (1-5) is at a high potential, the metal connecting shaft (1-3) and the gear set (1-4) are in good contact with the shaft and metal blades (1-2) of the generator (1-5), and the closed metal sawtooth (1-1) and the metal blades (1-2) are in good contact to ensure that the closed metal sawtooth (1-1) is at a high potential.

3. The high voltage direct current system energy extraction device based on ion wind effect according to claim 1 is characterized in that: The metal blade (1-2) used for driving the generator (1-5) to rotate has the characteristics of light weight, good ductility and not easy to deform. It is made of iron, copper or aluminum, and the minimum external voltage for the metal blade to drive the generator to rotate is reduced as much as possible.

4. The high voltage direct current system energy extraction device based on ion wind effect according to claim 1, characterized in that: When a voltage is applied to the closed metal saw teeth (1-1) for generating corona discharge, the electric field intensity at the tip is greater than the minimum electric field intensity for ionizing air, and the number of the closed metal saw teeth (1-1) is ≥2.

5. The high voltage direct current system energy extraction device based on ion wind effect according to claim 1, characterized in that: The shape of the closed metal saw teeth (1-1) for generating corona discharge is rectangular, triangular or circular, and the directions of the closed metal saw teeth (1-1) for generating corona discharge must be consistent, uniformly clockwise or uniformly counterclockwise.

6. The high voltage direct current system energy extraction device based on ion wind effect according to claim 1, characterized in that: The tip portion of the outer end of the metal blade (1-2) is ground into an arc shape, and the tip portions of the closed metal saw teeth (1-1) other than the saw teeth are ground into an arc shape.

7. The high voltage direct current system energy extraction device based on ion wind effect according to claim 1, characterized in that: The gear set (1-4) comprises two meshing gears, the large gear is connected to the metal blade (1-2) via a metal connecting shaft (1-3), and the small gear is connected to the shaft of the generator (1-5), and the rotation speed of the generator is controlled by changing the gear ratio.

8. The high voltage direct current system energy extraction device based on ion wind effect according to claim 1, characterized in that: The generator (1-5) is a DC generator or an AC generator.

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