CN102097800A - Direct-current high voltage supply system utilizing wind power and photoelectricity - Google Patents
Direct-current high voltage supply system utilizing wind power and photoelectricity Download PDFInfo
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- CN102097800A CN102097800A CN2011100426212A CN201110042621A CN102097800A CN 102097800 A CN102097800 A CN 102097800A CN 2011100426212 A CN2011100426212 A CN 2011100426212A CN 201110042621 A CN201110042621 A CN 201110042621A CN 102097800 A CN102097800 A CN 102097800A
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Abstract
The invention relates to a direct-current high voltage supply system utilizing wind power and photoelectricity. The system comprises a main power generating set composed of capacitance-variable direct-current high voltage power generators, an auxiliary power generating set composed of higher direct current high voltage power generating systems, a solar photovoltaic power station composed of solar photovoltaic power generators and a wind turbine; direct current output by the higher direct current high voltage power generating systems provides power for the capacitance-variable direct current high voltage power generators; the wind energy and the solar energy drives the capacitance-variable power generators to rotate; and when the capacitance-variable direct current high voltage power generators rotate, the capacitance-variable direct current high voltage power generators raise the voltage of the higher direct current high voltage power generating systems to decades of times to become extra-high voltage direct current which is directly transmitted to an extra-high voltage direct current transmission network. Through the invention, the extra-high voltage direct current is generated by utilizing the renewable energy sources of wind energy or solar energy to drive the capacitance-variable direct current high voltage power generators to transmit electricity to a power grid. The direct-current high voltage supply system provided by the invention is suitable for power supply of extra-high voltage direct current power grids and is also suitable for high voltage and extra-high voltage direct current power grids.
Description
Technical field
The present invention relates to a kind of high direct voltage electric power system of utilizing wind-powered electricity generation and photoelectricity, belong to the high-tension electricity technical field.
Background technology
Direct current transportation is that present electric power big country in the world solves high voltage, big capacity, long distance electricity and an interconnected important means of electrical network.Direct current transportation is that alternating current is transformed into direct current by converter, delivers to receiving end and becomes alternating current by converter by DC power transmission line then, finally injects AC network.
Extra-high voltage direct-current transmission (UHVDC-Ultra High Voltage Direct Current Transmission) is meant ± direct current transportation and the correlation technique of 800kV and above electric pressure.
Adopt conventional art that alternating current is transformed into direct current by converter, have the converter that needs big capacity, large volume, cause that loss is big, cost is high, efficient is low.
Notification number CN2492006 is disclosed to be a kind of variable displacement type generator, it comprises variable capacitor, also comprise input power supply, continued flow switch device and energy storage capacitor, wherein but variable capacitor is made up of the moving plate of stator and high speed rotating, the continued flow switch device is made up of two continued flow switch devices, and this utility model is particularly suitable for high pressure and ultra high voltage generating.
Summary of the invention
The objective of the invention is, solar energy and wind energy are transformed into direct current, have that loss is big, cost is high, inefficient problem in order to solve conventional art.Can also solve the problem that solar energy is unstable with the output of wind energy energy, be difficult to be connected electrical network in addition, simplify the intelligentized technical barrier of high direct voltage electrical network.The present invention discloses a kind of high direct voltage electric power system of utilizing wind-powered electricity generation and photoelectricity, utilizes the variable displacement type generator to obtain high pressure, superhigh pressure and extra-high voltage direct-current electric energy, and directly enters the high direct voltage electrical network.
Technical scheme of the present invention is,
Described system comprises: by power transformation hold main generator group that the high direct voltage generator forms, the auxiliary power generation unit formed by higher high direct voltage electricity generation system, solar photo-voltaic power generation station and the wind energy conversion system formed by solar photovoltaic generator.Higher high direct voltage electricity generation system is made up of alternating current generator, step-up transformer and rectifying installation, and the direct current of higher high direct voltage electricity generation system output holds the high direct voltage generator powered to power transformation; The rotation of high direct voltage generator is held in wind energy or Driven by Solar Energy power transformation; When the rotation of high direct voltage generator was held in power transformation, power transformation was held the high direct voltage generator and is produced superhigh pressure or extra-high voltage direct-current electricity, is delivered directly to superhigh pressure or extra-high voltage direct-current transmission net.
Core in the system of the present invention is that the high direct voltage generator is held in power transformation, as shown in Figure 3 and Figure 4.Described power transformation hold the high direct voltage generator be one can only the circumference rotation variable capacitor, formed by moving plate and stator, moving plate and stator that the high direct voltage generator is held in described power transformation are divided into some groups, each group has independent continued flow switch system, and every group of certain angle that staggers all has a stable output to guarantee generator in any moment; Stator and moving plate that high direct voltage generator capacitor is held in power transformation are installed in the vacuum tank, prevent the breakdown generation electric arc of air and then destroy insulator, the positive pole of generator capacitor connects the moving plate of capacitor, and negative pole connects the stator of capacitor, stator surface coverage insulating material.
The operation principle of " the high direct voltage generator is held in power transformation " is:
One can only circumference the variable capacitor of rotation, when maximum capacity (Cmax), charge into the electric energy that voltage is U1.The electric weight that charges into: Q=U1Cmax; The electric energy that charges into: E1=1/2 U1
2Cmax
With mechanical force rotary capacitor moving plate, the condenser plate distance to be drawn back, capacitance is along with minimizing, and the voltage between the electric capacity pole piece also raises along with the minimizing of capacity.When capacitance was reduced to minimum (Cmin), the voltage of this moment was U2.Electric energy on the capacitor is E2.
U2=U1·Cmax/Cmin
E2=E1·Cmax/Cmin
If the ratio of variable capacitor maximum capacitance and minimum capacity is 20, output voltage will be 20 times of input voltage, and the output electric energy also is 20 times of the input electric energy, and wherein 19E1 is exactly the electric energy that mechanical force rotary variable capacitor moving plate mechanical energy converts to.
Power transformation among the present invention is held the high direct voltage generating set and is made up of the afterflow device of input power supply that provides mechanokinetic engine (as motor, wind energy conversion system etc.), power transformation to hold high direct voltage generator and low voltage and control power flow, and its electric principle as shown in Figure 2.
Stator and moving plate that the capacitor of high direct voltage generator is held in power transformation are installed in the vacuum tank.Purpose is to prevent the breakdown generation electric arc of air and then destroy insulator.The vacuum state air drag is the zero heat that can improve generator efficiency and eliminate the windage generation.
Hold the moving plate rotation of high direct voltage generator by mechanical energy being driven power transformation, the voltage that makes the input power transformation hold the high direct voltage generator improves more than 10 times, directly becomes direct current superhigh pressure or ultra high voltage electric energy.
Higher high direct voltage system in the system of the present invention is made up of alternating current generator, step-up transformer and rectifying installation, its output voltage is direct current superhigh pressure or extra-high voltage grid voltage 0.01 ~ 0.1 times, and its power output is also held 0.01 ~ 0.1 of high direct voltage generating set for power transformation.Higher high direct voltage system drives generating by thermoelectricity or hydroelectric station; Higher high direct voltage system holds the high direct voltage generator to power transformation to be provided by mechanical force and promotes the direct current energy that changes superhigh pressure or extra-high voltage direct-current output into.
Wind energy in the system of the present invention and solar energy all are to hold the high direct voltage generator for power transformation power source is provided.The mechanical energy that produces of rotating wind energy drive wind energy conversion system drives the rotation of power transformation appearance high direct voltage generator after by speed changer speed being improved; The direct current energy that solar energy power generating equipment sends drives DC motor, and then drives the rotation of power transformation appearance high direct voltage generator by DC motor again, and holding the high direct voltage generator for power transformation provides power.
DC motor that the direct current energy that solar energy power generating equipment sends in the system of the present invention drives and power transformation are held the high direct voltage generator and are sealed in the same vacuum tank, do not have the conveying of mechanical energy between vacuum tank is inside and outside.
The present invention's beneficial effect compared with the prior art is, the present invention utilizes regenerative resource wind energy or Driven by Solar Energy power transformation to hold the high direct voltage generator, convert mechanical energy to electric energy, make high voltage direct current be transformed to superhigh pressure or extra-high voltage direct-current is transmitted electricity to extra-high voltage grid, thus can be with superhigh pressure or ultra high voltage electric energy by electrical network to remote conveying.
The present invention is applicable to high pressure, superhigh pressure and extra-high voltage grid power supply.
Description of drawings
Fig. 1 is the high direct voltage electric power system structured flowchart that the present invention utilizes wind-powered electricity generation and photoelectricity;
Fig. 2 is that high direct voltage generator electrical schematic diagram is held in power transformation of the present invention;
Fig. 3 is that high direct voltage generator unit structure schematic diagram is held in power transformation;
Fig. 4 is the structural representation that high direct voltage generator stator and moving plate are held in power transformation;
Picture in picture number expression: the 1st, DC motor; The 2nd, the high direct voltage generator is held in power transformation; The 3rd, vacuum tank; The 4th, power supply of dc motor line import (band sealing); The 5th, shaft coupling; The 6th, high direct voltage generator high-voltage output line cable (band sealing) is held in power transformation; The 21st, high direct voltage generator stator is held in power transformation; The 22nd, high direct voltage generator moving plate is held in power transformation; The 23rd, the spacer block between the stator; The 24th, stator group set bolt; The 25th, the high direct voltage alternator shaft is held in power transformation; The 26th, the stator fixing hole.
Embodiment
The specific embodiment of the invention as shown in Figure 3.
The embodiment of the invention is built a power station at coal resource and the abundant area of hydropower resources.This power station unit holds auxiliary power generation unit two parts that main generator group that the high direct voltage generator forms and higher high direct voltage electricity generation system form by power transformation and forms; Wherein higher high direct voltage system is made up of alternating current generator, step-up transformer and rectifying installation; The direct current of higher high direct voltage system output holds the high direct voltage generator powered to power transformation, and when the rotation of high direct voltage generator was held in power transformation, the extra-high voltage direct-current electricity that send in the power station was delivered directly to the extra-high voltage direct-current transmission net.The output voltage of higher high direct voltage system is about 0.1 of a direct current extra-high voltage grid voltage, its power output also be power transformation hold the high direct voltage generating set about 0.1.
Build wind-force and solar photo-voltaic power generation station in the place that is fit to build wind-driven generator and solar photovoltaic generator, they hold the high direct voltage generator for power transformation provides power; The driving of power transformation appearance high direct voltage generator can drive wind energy conversion system by wind energy to be provided through speed change; Also can drive DC motor by the direct current energy that solar energy power generating equipment sends and drive the rotation of power transformation appearance high direct voltage generator by DC motor again.Being provided by firepower or hydropower station than High Level DC Voltage of high direct voltage generator input is provided in power transformation, and the extra-high voltage direct-current electricity of output is delivered directly to the extra-high voltage direct-current electrical network.
When wind energy and solar energy enrich, the electric power that the power station flows to their higher high direct voltage also increases, detect this electric power and, reduce the output power of power station main generator group, make whole electrical network output power balance and reduce waterpower or the consumption of coal resource by automatic control equipment.This generating and delivery electric system should be the systems that structure is the simplest, cost performance is the highest.
Claims (5)
1. high direct voltage electric power system of utilizing wind-powered electricity generation and photoelectricity, holding high direct voltage generator, higher high direct voltage electricity generation system, solar photovoltaic generator and wind energy conversion system by power transformation forms, it is characterized in that described system comprises: by power transformation hold main generator group that the high direct voltage generator forms, the auxiliary power generation unit formed by higher high direct voltage electricity generation system, solar photo-voltaic power generation station and the wind energy conversion system formed by solar photovoltaic generator; The direct current of higher high direct voltage system output holds the high direct voltage generator powered to power transformation; Wind energy or Driven by Solar Energy become the rotation of condenser type generator; When the rotation of high direct voltage generator was held in power transformation, power transformation was held the high direct voltage generator and is produced superhigh pressure or extra-high voltage direct-current electricity, is delivered directly to superhigh pressure or extra-high voltage direct-current transmission net.
2. a kind of high direct voltage electric power system of utilizing wind-powered electricity generation and photoelectricity according to claim 1, it is characterized in that, moving plate and stator that the high direct voltage generator is held in described power transformation are divided into some groups, each group has independent continued flow switch system, and every group of certain angle that staggers all has a stable output to guarantee generator in any moment; Stator and moving plate that high direct voltage generator capacitor is held in power transformation are installed in the vacuum tank, prevent the breakdown generation electric arc of air and then destroy insulator, the positive pole of generator capacitor connects the moving plate of capacitor, and negative pole connects the stator of capacitor, stator surface coverage insulating material.
3. a kind of high direct voltage electric power system of utilizing wind-powered electricity generation and photoelectricity according to claim 1, it is characterized in that, described higher high direct voltage system is made up of alternating current generator, step-up transformer and rectifying installation, hold the high direct voltage generator to power transformation and carry, its power output is 0.01 ~ 0.1 times that the high direct voltage generating set is held in power transformation.
4. a kind of high direct voltage electric power system of utilizing wind-powered electricity generation and photoelectricity according to claim 1, it is characterized in that, the rotation of high direct voltage generator is held in described wind energy or Driven by Solar Energy power transformation, after the mechanical energy that produces of rotating finger wind energy drive wind energy conversion system improves speed by speed changer, the rotation of driving power transformation appearance high direct voltage generator; The direct current energy that solar energy power generating equipment sends drives DC motor, and then drives the rotation of power transformation appearance high direct voltage generator by DC motor again, and holding the high direct voltage generator for power transformation provides power.
5. a kind of high direct voltage electric power system of utilizing wind-powered electricity generation and photoelectricity according to claim 1, it is characterized in that, DC motor that the direct current energy that described solar energy power generating equipment sends drives and power transformation are held the high direct voltage generator and are sealed in the same vacuum tank, do not have the conveying of mechanical energy between vacuum tank is inside and outside.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100426212A CN102097800A (en) | 2011-02-23 | 2011-02-23 | Direct-current high voltage supply system utilizing wind power and photoelectricity |
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| CN2011100426212A CN102097800A (en) | 2011-02-23 | 2011-02-23 | Direct-current high voltage supply system utilizing wind power and photoelectricity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111193431A (en) * | 2020-02-05 | 2020-05-22 | 北京纳米能源与系统研究所 | Direct current output friction nanometer power generation device and sensing equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492006Y (en) * | 2001-07-26 | 2002-05-15 | 张光坦 | Variable-capacitance generator |
| CN101459390A (en) * | 2008-12-30 | 2009-06-17 | 浙江师范大学 | Application of dielectric elastomer on electricity generator |
| CN201282433Y (en) * | 2008-09-19 | 2009-07-29 | 马晓军 | Ocean wave electric generator |
-
2011
- 2011-02-23 CN CN2011100426212A patent/CN102097800A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492006Y (en) * | 2001-07-26 | 2002-05-15 | 张光坦 | Variable-capacitance generator |
| CN201282433Y (en) * | 2008-09-19 | 2009-07-29 | 马晓军 | Ocean wave electric generator |
| CN101459390A (en) * | 2008-12-30 | 2009-06-17 | 浙江师范大学 | Application of dielectric elastomer on electricity generator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111193431A (en) * | 2020-02-05 | 2020-05-22 | 北京纳米能源与系统研究所 | Direct current output friction nanometer power generation device and sensing equipment |
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Application publication date: 20110615 |