CN104935014B - A kind of generating field grid-connected system of generation of electricity by new energy - Google Patents
A kind of generating field grid-connected system of generation of electricity by new energy Download PDFInfo
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- CN104935014B CN104935014B CN201510428241.0A CN201510428241A CN104935014B CN 104935014 B CN104935014 B CN 104935014B CN 201510428241 A CN201510428241 A CN 201510428241A CN 104935014 B CN104935014 B CN 104935014B
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Abstract
Present invention is disclosed a kind of generating field grid-connected system of generation of electricity by new energy, supplementary energy output end connects transformer T1 armature winding through the first ultracapacitor, supplementary energy output end connects transformer T2 armature winding through the second ultracapacitor, the secondary windings of the transformer T2 connects inverter through fixed rectifier, the inverter connects power generating equipment, the secondary windings of the transformer T1 connects power generating equipment through silicon controlled rectifier (SCR), and the output of the inverter is connected to the grid energy supply.The advantage of the invention is that can effectively eliminate wind power generation field it is discontinuous, it is unstable, " abandoning wind " phenomena such as, accomplish the requirement of peak load shifting in good time, when wind power generation field voltage declines, directly it can be powered by supplementary energy supply line, directly wind power generation field is helped to provide corresponding differential section voltage, how much make how many hair of wind power generation field, and ensure the clamp current that wind power generation field continuously generates electricity so that wind power generation field obtains continuous and stable energy supply.
Description
Technical field
The present invention relates to new energy (solar energy, wind energy) power field.
Background technology
Many defects be present currently with wind power generation, cause to be difficult to generate electricity by way of merging two or more grid systems, mainly due to wind power generation very not
It is stable, generate electricity by way of merging two or more grid systems highly difficult, and very high with batteries to store energy cost, management difficulty is big so that the development of wind power generation by
Very big restriction.
The content of the invention
The technical problems to be solved by the invention are to realize a kind of controllable wind energy (solar energy) generating field grid-connected system,
Be advantageous to substantially effectively utilize wind power generation by the present invention, and the reactive energy of power network, realize renewable sources of energy continuous and stable
Generating and network grid-connected power, thoroughly solve the unstable and discontinuous phenomenon of wind power generation field generating voltage, ensure that the renewable sources of energy
The sustainable development of generation mode, extensive development.
To achieve these goals, the technical solution adopted by the present invention is：A kind of generating field grid-connected system of generation of electricity by new energy,
Supplementary energy output end connects transformer T1 armature winding through the first ultracapacitor, and supplementary energy output end is super through second
Capacitor connection transformer T2 armature winding, the secondary windings of the transformer T2 connect inverter, institute through fixed rectifier
Inverter connection power generating equipment is stated, the secondary windings of the transformer T1 connects power generating equipment through silicon controlled rectifier (SCR), described inverse
The output for becoming device is connected to the grid energy supply.
The positive pole of the negative pole of the silicon controlled rectifier (SCR) and wind power generation field rectifier is connected in series, the silicon controlled rectifier
The positive pole of device and the positive pole of inverter connect, and the negative pole of the power generating equipment and the negative pole of inverter connect.
The supplementary energy is AC power, and alternating current is provided by national grid；Or supplementary energy is battery.
The output end of the supplementary energy is provided with power switch.
The power generating equipment is wind power plant.
The advantage of the invention is that can effectively eliminate wind power generation field it is discontinuous, it is unstable, " abandoning wind " phenomena such as, do in good time
It to the requirement of peak load shifting, when wind power generation field voltage declines, can directly be powered by supplementary energy supply line, directly helped
Wind power generation field provides corresponding differential section voltage, and ensures the clamp current that wind power generation field continuously generates electricity so that wind energy
Generating field obtains continuous and stable energy supply.
Brief description of the drawings
The content of every width accompanying drawing expression in description of the invention and the mark in figure are briefly described below：
Fig. 1 is electric field structure schematic diagram；
Mark in above-mentioned figure is：1st, power generating equipment；2nd, silicon controlled rectifier (SCR)；3rd, inverter；4th, supplementary energy；5th, it is electric
Source switch；6th, fixed rectifier.
Embodiment
As shown in figure 1, the generating field grid-connected system of generation of electricity by new energy is mainly made up of two supply lines in parallel, one is
Renewable sources of energy supply line, the renewable sources of energy that the present embodiment uses are wind power generation field supply lines, and the supply line includes
Power generating equipment 1 (wind power generation field rectifier), silicon controlled rectifier (SCR) 2, inverter 3；Another supply line is the energy of auxiliary
Supply line, the supply line include supplementary energy 4, capacitor C4-C6, transformer T2, fixed rectifier 6 and diode
Inverter 3 is inputted after D9-D14 rectifications.
Above-mentioned auxiliary energy stream 4 is AC power, mainly provides alternating current by national grid, is generated electricity in isolated network regional
Supplementary energy 4 can be provided by battery.(energized to first group of generating set of renewable energy resource, subsequent power generation device can by
Isolated network provides supplementary energy 4).
Preferred scheme, connecting line is provided between fixed rectifier 6 and wind generating field.Between power generating equipment 1 and power network
Provided with connecting line.Connecting line is provided between above-mentioned supplementary energy 4 and silicon controlled rectifier (SCR) 2, supplementary energy 4 can be made to supply automatically
Initial power and differential section electric energy, finely tune and are controlled by feedback voltage, can be by internet by master control as trim voltage is offset
Room manual control processed, energized by capacitor in silicon controlled rectifier (SCR) 2, the voltage of silicon controlled rectifier (SCR) 2 adds the electricity of power generating equipment 1
Pressure supply inverter 3 is to export electricity, and this is the effective measures after voltage pulsation.
Help the renewable sources of energy to generate electricity using electric network reactive-load electric energy, power network majority is perceptual, if increasing in power network more
The electric current of opposite nature, the reactive power with regard to power network can be offset, it is equivalent to increase active power to power network, transformer T1's
Serial connected super capacitor C1-C3 in armature winding, in the transformer T2 of the circuitry input of fixed rectifier 6 armature winding
Middle serial connected super capacitor C4-C6 can make the 24 hours continuous and stables in wind power generation field generate electricity.
In three-phase alternating-current supply, the fixed output of rectifier 6 DC voltage is slightly above inverter 3 and inputs electricity capacitor series
Pressure, usually has certain amount electric current to be delivered to inverter 3, this is a kind of clamp current, firmly vises the electricity of power generating equipment 1 all the time
Stream can not fluctuate.The voltage of the initial voltage of silicon controlled rectifier (SCR) 2+difference voltage+power generating equipment 1 again with fixed rectifier 6
Clamping voltages are in parallel, and vising the voltage of power generating equipment 1 can not change.Fixing the design method of rectifier 6 and silicon controlled rectifier (SCR) 2 is
Only consumption reactive energy, because power network majority is perceptual, the electrical equipment of capacitive, as New Reactive Power Compensation Device are added,
The power factor of power network can be improved.
There is strong DC current supply；Silicon controlled rectifier (SCR) 2 is difference regulating and controlling voltage device, is supplied when power generating equipment 1 generates electricity
When electric line supply voltage reduces, silicon controlled rectifier (SCR) 2 conveys initial voltage and difference voltage, makes the rated voltage of inverter 3
All the time it is constant；Inverter 3 is that direct current energy is transformed into alternating current so that various electrical equipments use.
In order to which the course of work of the present invention is expanded on further, operation principle of the present invention is illustrated with reference to Fig. 1：When
When wind power generation field voltage is declined slightly or produced fluctuation, provide exchange by supplementary energy 4 and supply electricity to be energized by fixed rectifier 6,
Second, supplementary energy 4 supplies differential section electric energy automatically to silicon controlled rectifier (SCR) 2 simultaneously, supplementary energy 4 feeds silicon controlled rectifier
The difference voltage of device 2 and initial voltage, it is the electricity exported that supply inverter 3 is added with the generated energy of wind power generating equipment 1.Utilize
Supplementary energy 4 of the idle energy of national grid as renewable source of energy generation, can substitute renewable source of energy generation energy storage industry
Input, the generating construction cost for the renewable sources of energy can reduce significantly naturally, utilize the reactive energy of national grid to make
The accessory power supply of renewable source of energy generation is the good thing achieved many things at one stroke, and can give national grid reactive power compensation, and can is to power network
Improve power factor, while can steadily generate electricity to the renewable sources of energy, continuously generate electricity, generating electricity more, generating electricity can obtain on a large scale
Place.Also it is very important even if the active energy for consuming some power networks, because this power generation mode revolutionizes Regenerated energy
Source generation mode, renewable sources of energy sustainable development, extensive development can be made.The peak period of fossil energy is set to advance to, from now
Playing can and stopping a construction for thermal power generation unit, this generation mode can make the power output of same power generation unit into
Increase again, make the reduction of wind-driven generator installation cost, because this generation mode fuel cost is zero, and can sustainable development,
Also water resource is not consumed, not polluted water resources, does not also pollute air, can walk out development.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that present invention specific implementation is not by aforesaid way
Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is employed, or without changing
Enter and the design of the present invention and technical scheme are directly applied into other occasions, within protection scope of the present invention.
Claims (1)
- A kind of 1. generating field grid-connected system of generation of electricity by new energy, it is characterised in that：The generating field grid-connected system of generation of electricity by new energy by Two supply line's compositions in parallel, wherein a circuit is wind power generation field, another circuit is energy supply line；The supplementary energy output end of the energy supply line connects transformer T1 armature winding through the first ultracapacitor, auxiliary Energy source output terminal is helped to connect transformer T2 armature winding through the second ultracapacitor, the secondary windings of the transformer T2 is through solid Determine rectifier connection inverter, the inverter connection wind power generation field rectifier, the secondary windings warp of the transformer T1 can Control silicon rectifier connection wind power generation field rectifier, the output of the inverter is connected to the grid energy supply, the supplementary energy it is defeated Go out end and be provided with power switch；The positive pole of the negative pole of the silicon controlled rectifier (SCR) and wind power generation field rectifier is connected in series, the silicon controlled rectifier (SCR) The positive pole of positive pole and inverter connects, and the negative pole of the wind power generation field rectifier and the negative pole of inverter connect;The supplementary energy is AC power, and alternating current is provided by national grid；Or supplementary energy is battery;Wind power generation field rectifier is wind power plant;When the wind power generation field voltage declines or produces fluctuation, provide exchange by supplementary energy and supply electricity to be supplied by fixed rectifier Can, supplementary energy supplies differential section electric energy automatically to silicon controlled rectifier (SCR) simultaneously, and supplementary energy supply silicon controlled rectifier (SCR) is poor Volume voltage and initial voltage, supply inverter is added with the generated energy of wind power generation field rectifier.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN104935014A CN104935014A (en) | 2015-09-23 |
| CN104935014B true CN104935014B (en) | 2018-01-19 |
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| 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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| EP2741392A3 (en) * | 2012-12-04 | 2016-12-14 | ABB Research Ltd. | 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 |
| CN104538988B (en) * | 2015-01-08 | 2017-01-25 | 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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