CN104935014A - New energy wind power generation field grid-connected power generation system - Google Patents
New energy wind power generation field grid-connected power generation system Download PDFInfo
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- CN104935014A CN104935014A CN201510428241.0A CN201510428241A CN104935014A CN 104935014 A CN104935014 A CN 104935014A CN 201510428241 A CN201510428241 A CN 201510428241A CN 104935014 A CN104935014 A CN 104935014A
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Abstract
The invention discloses a new energy wind power generation field grid-connected power generation system. An auxiliary energy output end is connected with a primary winding of a transformer T1 through a first super capacitor, and the auxiliary energy output end is connected with a primary winding of a transformer T2 through a second super capacitor. A secondary winding of the transformer T2 is connected with an inverter through a stationary rectifier. The inverter is connected with a power generation facility. A secondary winding of the transformer T1 is connected with the power generation facility through a silicon controlled rectifier. The output of the inverter is connected to a power grid to supply power. The new energy wind power generation field grid-connected power generation system has the advantages that the phenomena that a wind energy power generation field is not continuous and not stable and wind curtailment occurs can be effectively eliminated, and the requirements for peak clipping and valley filling can be met at good time; when the voltage of the wind energy power generation field descends, an auxiliary energy power supply line can be directly used for supplying power and can directly help the wind energy power generation field to provide the corresponding voltage shortfall so that the wind energy power generation field can generate power as much as possible, the clamp current for continuous power generation of the wind energy power generation field can be guaranteed, and the wind energy power generation field can obtain continuous and stable power supply.
Description
Technical field
The present invention relates to new forms of energy (solar energy, wind energy) power field.
Background technology
Utilize wind power generation to there is many defects at present, cause being difficult to generate electricity by way of merging two or more grid systems, very unstable mainly due to wind power generation, generate electricity by way of merging two or more grid systems very difficult, and very high with batteries to store energy cost, management difficulty is large, makes the development of wind power generation be subject to very large restriction.
Summary of the invention
Technical problem to be solved by this invention realizes a kind of controlled wind energy (solar energy) generating field grid-connected system, be conducive to fully effectively utilizing wind power generation by the present invention, with the reactive energy of electrical network, realize the generating of renewable energy resources continuous and stable and network grid-connected power, the unstable non-continuous event of thorough solution wind power generation field generating voltage, ensure that the sustainable development of renewable source of energy generation mode, extensive development.
To achieve these goals, the technical solution used in the present invention is: the generating field grid-connected system of a kind of generation of electricity by new energy, supplementary energy output is through the armature winding of the first ultracapacitor connection transformer T1, supplementary energy output is through the armature winding of the second ultracapacitor connection transformer T2, the secondary winding of described transformer T2 connects inverter through fixing rectifier, described inverter connects power generating equipment, the secondary winding of described transformer T1 connects power generating equipment through silicon controlled rectifier, and the output of described inverter is connected to the grid energy supply.
The negative pole of described silicon controlled rectifier and the positive pole of wind power generation field rectifier are connected in series, and the positive pole of described silicon controlled rectifier is connected with the positive pole of inverter, and the negative pole of described power generating equipment is connected with the negative pole of inverter.
Described supplementary energy is AC power, provides alternating current by national grid; Or supplementary energy is storage battery.
The output of described supplementary energy is provided with mains switch.
Described power generating equipment is wind power plant.
The invention has the advantages that effectively can eliminate that wind power generation field is discontinuous, unstable, the phenomenon such as " abandoning wind ", accomplish the requirement of peak load shifting in good time, when wind power generation field voltage declines, can directly be powered by supplementary energy supply line, direct help wind power generation field provides corresponding differential section voltage, with the clamp current ensureing the uninterruptable power generation of wind power generation field, wind power generation field is made to obtain continuous and stable energy supply.
Accompanying drawing explanation
Mark in the content expressed every width accompanying drawing in specification of the present invention below and figure is briefly described:
Fig. 1 is electric field structure schematic diagram;
Mark in above-mentioned figure is: 1, power generating equipment; 2, silicon controlled rectifier; 3, inverter; 4, supplementary energy; 5, mains switch; 6, fixing rectifier.
Embodiment
As shown in Figure 1, the generating field grid-connected system of generation of electricity by new energy is primarily of two supply line in parallel compositions, one Tiao Shi renewable energy resources supply line, the renewable energy resources that the present embodiment adopts are wind power generation field supply lines, and this supply line includes power generating equipment 1 (wind power generation field rectifier), silicon controlled rectifier 2, inverter 3; Another supply line is auxiliary energy supply line, and this supply line inputs inverter 3 after including supplementary energy 4, capacitor C4-C6, transformer T2, fixing rectifier 6 and diode D9-D14 rectification.
Above-mentioned auxiliary energy stream 4 is AC power, provides alternating current primarily of national grid, nets generating area also can provide supplementary energy 4 by storage battery orphan.(to first group of generating set of renewable energy resource energy supply, subsequent power generation device just can provide supplementary energy 4 by lonely net).
Preferred version, is provided with connecting line between fixing rectifier 6 and wind generating field.Connecting line is provided with between power generating equipment 1 and electrical network.Connecting line is provided with between above-mentioned supplementary energy 4 and silicon controlled rectifier 2, supplementary energy 4 supply initial power and differential section electric energy automatically can be made, fine setting is controlled by feedback voltage, as trim voltage has skew, by the Internet by master control room Artificial Control, add that the voltage of power generating equipment 1 supplies inverter 3 and is output electricity at silicon controlled rectifier 2 by the voltage of capacitor energy supply, silicon controlled rectifier 2, this is the effective measures after voltage fluctuation.
Electric network reactive-load electric energy is utilized to help the multiple electricity of the renewable energy resources, electrical network majority is perceptual, if increase the electric current of opposite nature in electrical network, just can offset the reactive power of electrical network, just be equivalent to increase active power to electrical network, serial connected super capacitor C1-C3 in the armature winding of transformer T1, in the armature winding of the transformer T2 of the circuitry input of fixing rectifier 6, serial connected super capacitor C4-C6 can make the continuous and stable generating in 24 hours of wind power generation field.
Capacitor series is in three-phase alternating-current supply, and fixing rectifier 6 output dc voltage is a little more than inverter 3 input voltage, and have some electric currents to be delivered to inverter 3 at ordinary times all the time, this is a kind of clamp current, and the electric current firmly vising power generating equipment 1 cannot fluctuate.The voltage of the initial voltage+difference voltage+power generating equipment 1 of silicon controlled rectifier 2 is in parallel with the Clamping voltages of fixing rectifier 6 again, and vising power generating equipment 1 voltage cannot change.The design of fixing rectifier 6 and silicon controlled rectifier 2 only consumes reactive energy, because electrical network majority is perception, adds the power consumption equipment of capacitive, be New Reactive Power Compensation Device, can improve the power factor of electrical network.
There is strong direct current supply; Silicon controlled rectifier 2 is difference regulating and controlling voltage device, and when power generating equipment 1 generates electricity supply line's supply power voltage reduction, silicon controlled rectifier 2 carries initial voltage and difference voltage, makes the rated voltage of inverter 3 constant all the time; Inverter 3 direct current energy is transformed into alternating current use for various power consumption equipment.
In order to set forth the course of work of the present invention further, composition graphs 1 illustrates operation principle of the present invention: one is, when wind power generation field voltage slightly declines or produce fluctuation, there is provided alternating current to by the energy supply of fixing rectifier 6 by supplementary energy 4, two is that supplementary energy 4 is simultaneously to silicon controlled rectifier 2 supply differential section electric energy automatically, supplementary energy 4 supply silicon controlled rectifier 2 difference voltage and initial voltage, be added with the energy output of wind power generating equipment 1 and supply the electricity that inverter 3 is output.Utilize the supplementary energy 4 of the idle energy as renewable source of energy generation of national grid, the input of renewable source of energy generation energy storage industry can be substituted, generating construction cost for the renewable energy resources can significantly reduce naturally, the accessory power supply utilizing the reactive energy of national grid to make renewable source of energy generation is the good thing of achieving many things at one stroke, national grid reactive power compensation can be given, power factor can be improved to electrical network again, can give that the renewable energy resources steadily generate electricity simultaneously, uninterruptable power generation, multiple electricity, extensive generating can acquire benefit.Even if the active energy consuming some electrical networks is also very important, because this power generation mode revolutionizes renewable source of energy generation mode, renewable energy resources sustainable development, extensive development can be made.The peak period of fossil energy is arrived in advance, from now on the construction of thermal power generation unit can just be stopped, this generation mode can make the power output increase at double of same power generation unit, wind-driven generator installation cost is reduced, because this generation mode fuel cost is zero, again can sustainable development, also water resources is not consumed, not polluted water resources, also not contaminated air, development of can walking out.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (5)
1. the generating field grid-connected system of generation of electricity by new energy, it is characterized in that: supplementary energy output is through the armature winding of the first ultracapacitor connection transformer T1, supplementary energy output is through the armature winding of the second ultracapacitor connection transformer T2, the secondary winding of described transformer T2 connects inverter through fixing rectifier, described inverter connects power generating equipment, the secondary winding of described transformer T1 connects power generating equipment through silicon controlled rectifier, and the output of described inverter is connected to the grid energy supply.
2. the generating field grid-connected system of generation of electricity by new energy according to claim 1, it is characterized in that: the negative pole of described silicon controlled rectifier and the positive pole of wind power generation field rectifier are connected in series, the positive pole of described silicon controlled rectifier is connected with the positive pole of inverter, and the negative pole of described power generating equipment is connected with the negative pole of inverter.
3. the generating field grid-connected system of generation of electricity by new energy according to claim 1 and 2, is characterized in that: described supplementary energy is AC power, provides alternating current by national grid; Or supplementary energy is storage battery.
4. the generating field grid-connected system of generation of electricity by new energy according to claim 1 and 2, is characterized in that: the output of described supplementary energy is provided with mains switch.
5. the generating field grid-connected system of generation of electricity by new energy according to claim 1 and 2, is characterized in that: described power generating equipment is wind power plant.
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| CN201510428241.0A CN104935014B (en) | 2015-07-20 | 2015-07-20 | A kind of generating field grid-connected system of generation of electricity by new energy |
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| CN201510428241.0A CN104935014B (en) | 2015-07-20 | 2015-07-20 | A kind of generating field grid-connected system of generation of electricity by new energy |
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| CN104935014B CN104935014B (en) | 2018-01-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105449711A (en) * | 2015-12-09 | 2016-03-30 | 天津夏正源光伏能源科技有限公司 | Multi-distributed-generation-unit grid-connected power generation system |
| CN105471070A (en) * | 2015-11-09 | 2016-04-06 | 李哲 | Distributed photovoltaic power generation electric quantity distribution system and method |
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| CN203617724U (en) * | 2013-12-20 | 2014-05-28 | 王日晟 | Solar power station intelligent grid connection power generation device system |
| CN103956765A (en) * | 2012-12-04 | 2014-07-30 | Abb研究有限公司 | Systems and methods for utilizing an active compensator to augment a diode rectifier |
| CN104538988A (en) * | 2015-01-08 | 2015-04-22 | 广西大学 | Voltage stability regulating system for distributed power connection and control method thereof |
| CN204858587U (en) * | 2015-07-20 | 2015-12-09 | 芜湖市大文节能环保技术有限公司 | Novel generation of electricity by new energy field grid -connected electricity generation system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956765A (en) * | 2012-12-04 | 2014-07-30 | Abb研究有限公司 | Systems and methods for utilizing an active compensator to augment a diode rectifier |
| CN203617724U (en) * | 2013-12-20 | 2014-05-28 | 王日晟 | Solar power station intelligent grid connection power generation device system |
| CN104538988A (en) * | 2015-01-08 | 2015-04-22 | 广西大学 | Voltage stability regulating system for distributed power connection and control method thereof |
| CN204858587U (en) * | 2015-07-20 | 2015-12-09 | 芜湖市大文节能环保技术有限公司 | Novel generation of electricity by new energy field grid -connected electricity generation system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471070A (en) * | 2015-11-09 | 2016-04-06 | 李哲 | Distributed photovoltaic power generation electric quantity distribution system and method |
| CN105449711A (en) * | 2015-12-09 | 2016-03-30 | 天津夏正源光伏能源科技有限公司 | Multi-distributed-generation-unit grid-connected power generation system |
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| CN104935014B (en) | 2018-01-19 |
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