CN102222968A - AC (Alternate Current) complementation method for multipower system - Google Patents
AC (Alternate Current) complementation method for multipower system Download PDFInfo
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- CN102222968A CN102222968A CN2011101627967A CN201110162796A CN102222968A CN 102222968 A CN102222968 A CN 102222968A CN 2011101627967 A CN2011101627967 A CN 2011101627967A CN 201110162796 A CN201110162796 A CN 201110162796A CN 102222968 A CN102222968 A CN 102222968A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses an AC (Alternate Current) complementation method for a multipower system. In the AC complementation method, a transformer with a plurality of input ports is used as a power node, wind power and photoelectricity are respectively switched in the input ports of the transformer, grid electricity is switched in other input ports of the transformer, and an output of the transformer is connected with a user or a local area network, so that multipower complementation and power integration are realized at a user side of the transformer, wherein the wind power and the photoelectricity are switched into the transformer in a controlled mode; the grid electricity is switched into the transformer in an uncontrolled mode; the wind power, the photoelectricity and the grid electricity in the multipower system have the same frequency and the same phase; voltage classes of power subsystems can be unequal; and the voltage classes of the power subsystems and a voltage class of the grid electricity can be unequal. The AC complementation method for the multipower system has the significances of locally utilizing wind energy, optical energy and wave energy most conveniently and rapidly and furthest, reducing the requirement of the grid electricity on power capacity and achieving the low-carbon energy-saving and green environmental-friendly effects.
Description
Technical field
The present invention belongs to the electric power transmission technology about the AC complementary method of a plurality of power-supply systems.
Background technology
Because wind energy and luminous energy output electric energy instability will be utilized this class energy better, existing method is from the net and the dual mode that is incorporated into the power networks; The solution of off-grid type is to adopt batteries to store energy, and the investment in this power station and maintenance cost are very high, can't use in high-power field; Parallel net type is subjected to certain restriction owing to present stage reason such as electric power network technique in the application.Another method be with wind-powered electricity generation, photoelectricity and net electricity respectively rectification become behind the direct current and utilize again, reach wind-powered electricity generation, photoelectricity and net electricity purpose in the DC side complementation, this mode is comparatively common in the small-power system, because technology and cost do not have too big practical value in hicap.
Summary of the invention
The objective of the invention is: the AC complementary method that proposes a kind of a plurality of power-supply systems, by netting the AC complementary of electricity to wind-powered electricity generation and photoelectricity, provide stable electric energy to user or local power net, this method is without energy storage and do not need to be incorporated into the power networks preferentially dissolve on the spot wind energy and luminous energy.
Method of the present invention is: the transformer that utilizes input port more than is as power node, wind-powered electricity generation and photoelectricity insert the input port of transformer respectively, the net electricity inserts the other input port of transformer, transformer output connects user or local area network (LAN), realizes that at the user side of transformer the complementation of many power supplys and power are integrated; Wind-powered electricity generation and photoelectricity are that controlled way inserts transformer, and the net electricity is controlled way access transformer not; Wind-powered electricity generation in the multi-power system and photoelectricity and net electricity is with homophase frequently, the electric pressure between each power subsystem, and and the electric pressure of net electricity can be unequal.
The power flow direction on transformer by computer control wind-powered electricity generation and photoelectricity preferentially uses the electric energy of wind-powered electricity generation and photoelectricity to greatest extent, and minimally uses the net electricity, by the fluctuation and the variation of net electronic compensating wind-powered electricity generation and photoelectricity, guarantees that the electric energy of user side is stable.
Computer control unit is made up of user side electrical quantity sensor, the electric side electrical quantity sensor of net, wind-powered electricity generation side electrical quantity sensor, photoelectricity side electrical quantity sensor and computer system; Electrical quantity sensor is received the relevant input interface of computer control unit respectively, the output control signal of computer control unit is received the control port of wind-powered electricity generation and electro-optical system respectively, the electric weight output of control wind-powered electricity generation and photoelectricity is according to the output electric weight of algorithm controls wind-powered electricity generation and photoelectricity.
The course of work of the present invention: net electricity, wind-powered electricity generation and photoelectricity are given user or local area network (LAN) power supply by transformer, when the electric weight that sends when wind-powered electricity generation and photoelectricity is enough, can provide the electric energy of load more than 90%, net electric supply below 10%; When the output electric energy of wind-powered electricity generation and photoelectricity descended, the net electricity is the electric power of supply sloping portion automatically, and when for example wind-powered electricity generation and photoelectricity only can provide the electric energy of load 20%, the net electricity will supply with 80% automatically; If when wind-powered electricity generation and photoelectricity were not exported, all electric power all came from net.
The inventive method is equally applicable to seawave power generation; The net electricity can generator power supply substitutes by exporting stably.
Also can utilize photoelectricity that wind-powered electricity generation is carried out AC complementary among the present invention, realize the stable output of load-side electric energy.Also can only there be wind-powered electricity generation or photoelectricity or wave electricity to insert separately among the present invention, becomes the AC complementary of wind-powered electricity generation or photoelectricity or wave electricity and net electricity.
The transformer of the many input ports among the present invention can be made of the serial connection of input port transformer more than two.
The outstanding advantage of the present invention is: 1, do not have expensive energy-storage units and do not need to be incorporated into the power networks; 2, utilize the power node of transformer as many power supplys, wind-powered electricity generation, photoelectricity, wave electricity and net electricity exchange integrated at this node, be incorporated into the power networks in the load-side equivalence, realize that the AC power of power supply in economize on electricity of different electric pressures is integrated; 3, by power flow direction control, guarantee not to electrical network loopback power; 4, the inventive method if desired, disconnecting consumers, by software control, originally the input port of net electricity becomes the output of being incorporated into the power networks, and just can realize generating electricity by way of merging two or more grid systems of wind-powered electricity generation, photoelectricity and wave electricity, realizes the function in the distributed power station of being incorporated into the power networks.
Meaning of the present invention is the most convenient and on-site elimination wind energy, luminous energy and wave energy substantially, has reduced the electric weight demand of net electricity, reaches the effect of the energy-conservation and environmental protection of low charcoal; For the application of promoting wind energy, luminous energy and wave energy provides new technology path, have great theory and practical significance; According to method of the present invention can undertaking of construction power plant for self-supply or the distributed power station of electrical network.
Description of drawings
Fig. 1 is the schematic diagram of multi-power system AC complementary method.
Fig. 2 is many input ports transformer that the serial connection of input port transformer more than two constitutes.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Among Fig. 1, A1 is the net electricity, and A2 is a photonics, and A3 is the wind-powered electricity generation subsystem, and A4 is user or local power net, and B is many input ports transformer, and C is a computer control unit; P1 nets electric side electrical quantity sensor, P2 photoelectricity side electrical quantity sensor, and P3 wind-powered electricity generation side electrical quantity sensor, P4 is the user side electrical quantity sensor.
Among Fig. 2, B1 and B2 are the transformer of input port more than two.
The course of work of the AC complementary method of multi-power system shown in Figure 1 is: net first winding that electric A1 directly receives transformer B, the electric energy of electro-optical system A2 is received second input winding of transformer B, the be incorporated into the power networks output winding of transformer of the standard of receiving wind power system A3 the 3rd of the transformer B input winding that be incorporated into the power networks, standard is received user's local area network (LAN) A4.
Electrical quantity sensor P1, P2, P3 and P4 detect the real-time generating and the demand electric weight of net electricity, photoelectricity, wind-powered electricity generation and user's local power net, give the computer system C of control unit, during greater than photoelectricity and the specified output summation of wind-powered electricity generation P2+P3, NetTone Communicator is crossed the transformer B that is incorporated into the power networks and is replenished its not enough electric weight P1 to user's local power net as the load P in the local power net 4; When the load P in the local electrical network 4 during less than photoelectricity and the specified output of wind-powered electricity generation, computer system will be controlled photoelectricity and wind-powered electricity generation output, and the net electricity is maintained to minimum amount of power P1, reach the purpose of stablizing user side voltage.
B1 is the transformer of input port more than among Fig. 2, can the AC power of wind-powered electricity generation and photoelectricity is earlier integrated; The integrated power of wind-powered electricity generation and photoelectricity is received B2 again and is realized the AC complementary electric with net, can solve the insulation safety problem of different electric pressures so better.
Though the present invention with preferred embodiment openly as above; but embodiment and accompanying drawing are not to be used for limiting the present invention, anyly are familiar with this skill person, without departing from the spirit and scope of the invention; can do various variations or retouching from working as, but equally within protection scope of the present invention.Therefore protection scope of the present invention should with the application claim was defined is as the criterion.
Claims (17)
1. the AC complementary method of a multi-power system, it is characterized in that: the transformer that utilizes input port more than is as power node, wind-powered electricity generation and photoelectricity insert the input port of transformer respectively, the net electricity inserts the other input port of transformer, transformer output connects user or local area network (LAN), realizes that at the user side of transformer the complementation of many power supplys and power are integrated; Wind-powered electricity generation and photoelectricity are that controlled way inserts transformer, and the net electricity is controlled way access transformer not; Wind-powered electricity generation in the multi-power system and photoelectricity and net electricity is with homophase frequently, the electric pressure between each power subsystem, and and the electric pressure of net electricity can be unequal.
2. the AC complementary method of multi-power system according to claim 1, it is characterized in that: by computer control unit control wind-powered electricity generation and the power flow direction of photoelectricity on transformer, preferentially use the electric energy of wind-powered electricity generation and photoelectricity to greatest extent, minimally uses net, by the fluctuation and the variation of net electronic compensating wind-powered electricity generation and photoelectricity, guarantee that the electric energy of user side is stable.
3. the AC complementary method of multi-power system according to claim 2 is characterized in that: described computer control unit is made up of user side electrical quantity sensor, the electric side electrical quantity sensor of net, wind-powered electricity generation side electrical quantity sensor, photoelectricity side electrical quantity sensor and computer system; Electrical quantity sensor is received the relevant input interface of computer control unit respectively, the output control signal of computer control unit is received the control port of wind-powered electricity generation and electro-optical system respectively, the electric weight output of control wind-powered electricity generation and photoelectricity is according to the output electric weight of algorithm controls wind-powered electricity generation and photoelectricity.
4. the AC complementary method of a multi-power system, it is characterized in that: the transformer that utilizes input port more than is as power node, wind-powered electricity generation inserts the input port of transformer, the net electricity inserts the other input port of transformer, transformer output connects user or local area network (LAN), realizes that at the user side of transformer the complementation of many power supplys and power are integrated; Wind-powered electricity generation is that controlled way inserts transformer, and the net electricity is controlled way access transformer not; Wind-powered electricity generation in the multi-power system and net electricity be with homophase frequently, the electric pressure between each power subsystem, and and the electric pressure of net electricity can be unequal.
5. the AC complementary method of multi-power system according to claim 4, it is characterized in that: by the power flow direction of computer control unit control wind-powered electricity generation on transformer, preferentially use the electric energy of wind-powered electricity generation to greatest extent, minimally uses net, by the fluctuation and the variation of net electronic compensating wind-powered electricity generation, guarantee that the electric energy of user side is stable.
6. the AC complementary method of multi-power system according to claim 5 is characterized in that: described computer control unit is made up of user side electrical quantity sensor, the electric side electrical quantity sensor of net, wind-powered electricity generation side electrical quantity sensor and computer control unit; Electrical quantity sensor is received the relevant input interface of computer control unit respectively, and the output control signal of computer control unit is received the control port of wind power system, and the electric weight output of control wind-powered electricity generation is according to the output electric weight of algorithm controls wind-powered electricity generation.
7. the AC complementary method of a multi-power system, it is characterized in that: the transformer that utilizes input port more than is as power node, photoelectricity inserts the input port of transformer, the net electricity inserts the other input port of transformer, transformer output connects user or local area network (LAN), realizes that at the user side of transformer the complementation of many power supplys and power are integrated; Photoelectricity is that controlled way inserts transformer, and the net electricity is controlled way access transformer not; Photoelectricity in the multi-power system and net electricity be with homophase frequently, the electric pressure between each power subsystem, and and the electric pressure of net electricity can be unequal.
8. the AC complementary method of multi-power system according to claim 7, it is characterized in that: by the power flow direction of computer control unit control photoelectricity on transformer, preferentially use the electric energy of photoelectricity to greatest extent, minimally uses net, by the fluctuation and the variation of net electronic compensating photoelectricity, guarantee that the electric energy of user side is stable.
9. the AC complementary method of multi-power system according to claim 8 is characterized in that: described computer control unit is made up of user side electrical quantity sensor, the electric side electrical quantity sensor of net, photoelectricity side electrical quantity sensor and computer system; Electrical quantity sensor is received the relevant input interface of computer control unit respectively, and the output control signal of computer control unit is received the control port of electro-optical system, and the electric weight output of control photoelectricity is according to the output electric weight of algorithm controls photoelectricity.
10. the AC complementary method of a multi-power system, it is characterized in that: the transformer that utilizes input port more than is as power node, the wave electricity inserts the input port of transformer, the net electricity inserts the other input port of transformer, transformer output connects user or local area network (LAN), realizes that at the user side of transformer the complementation of many power supplys and power are integrated; Wave electricity inserts transformer for controlled way, and the net electricity is controlled way access transformer not; Wave in multi-power system electricity and net electricity be with homophase frequently, the electric pressure between each power subsystem, and and the electric pressure of net electricity can be unequal.
11. the AC complementary method of multi-power system according to claim 10, it is characterized in that: by the power flow direction of computer control unit control wave electricity on transformer, preferentially use the electric energy of wave electricity to greatest extent, minimally uses net, by the fluctuation and the variation of net electronic compensating wave electricity, guarantee that the electric energy of user side is stable.
12. the AC complementary method of multi-power system according to claim 11 is characterized in that: described computer control unit is made up of user side electrical quantity sensor, the electric side electrical quantity sensor of net, wave electricity side electrical quantity sensor and computer system; Electrical quantity sensor is received the relevant input interface of computer control unit respectively, and the output control signal of computer control unit is received the control port of wave electric system, and the electric weight output of control wave electricity is according to the output electric weight of algorithm controls wave electricity.
13. the AC complementary method of a multi-power system, it is characterized in that: the transformer that utilizes input port more than is as power node, wind-powered electricity generation inserts the input port of transformer, photoelectricity inserts the other input port of transformer, transformer output connects user or local area network (LAN), realizes that at the user side of transformer the complementation of many power supplys and power are integrated; Wind-powered electricity generation and photoelectricity are that controlled way inserts transformer; Wind-powered electricity generation in the multi-power system and photoelectricity is with homophase frequently, the electric pressure between each power subsystem, and and the electric pressure of photoelectricity can be unequal.
14. the AC complementary method of multi-power system according to claim 13, it is characterized in that: by computer control unit control wind-powered electricity generation and the power flow direction of photoelectricity on transformer, by the fluctuation and the variation of photoelectricity compensation wind-powered electricity generation, guarantee that the electric energy of user side is stable.
15. the AC complementary method of multi-power system according to claim 14 is characterized in that: described computer control unit is made up of user side electrical quantity sensor, photoelectricity side electrical quantity sensor, wind-powered electricity generation side electrical quantity sensor and computer system; Electrical quantity sensor is received the relevant input interface of computer control unit respectively, and the output control signal of computer control unit is received the control port of wind-powered electricity generation and electro-optical system, according to the electric weight output of algorithm controls wind-powered electricity generation and photoelectricity.
16. the AC complementary method according to claim 1,4,7,10 and 13 described multi-power systems is characterized in that: the described power supply that is used for AC complementary can substitute by exporting stably generator power supply.
17. the AC complementary method according to claim 1,4,7,10 and 13 described multi-power systems is characterized in that: described many input ports transformer can be made of the serial connection of input port transformer more than two.
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| CN2011101627967A CN102222968A (en) | 2011-06-17 | 2011-06-17 | AC (Alternate Current) complementation method for multipower system |
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| CN2011101627967A CN102222968A (en) | 2011-06-17 | 2011-06-17 | AC (Alternate Current) complementation method for multipower system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821609A (en) * | 2015-05-29 | 2015-08-05 | 袁铁江 | Method for controlling wind-hydrogen energy storage coupling system connected with wind electric field in distributed manner |
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| CN101404410A (en) * | 2008-10-27 | 2009-04-08 | 张强胜 | Green energy resource and network-electricity parallel operation method |
| CN101567564A (en) * | 2009-06-09 | 2009-10-28 | 华中科技大学 | Voltage and power regulator based on the composite energy storage of storage battery and super capacitor |
| CN102185526A (en) * | 2011-04-24 | 2011-09-14 | 薛建仁 | Novel quasi-grid-connected wind-light-electricity complementary power station |
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- 2011-06-17 CN CN2011101627967A patent/CN102222968A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1980000899A1 (en) * | 1978-10-23 | 1980-05-01 | Western Electric Co | Circuit control to limit power drain of auxiliary power supply |
| CN101404410A (en) * | 2008-10-27 | 2009-04-08 | 张强胜 | Green energy resource and network-electricity parallel operation method |
| CN101567564A (en) * | 2009-06-09 | 2009-10-28 | 华中科技大学 | Voltage and power regulator based on the composite energy storage of storage battery and super capacitor |
| CN102185526A (en) * | 2011-04-24 | 2011-09-14 | 薛建仁 | Novel quasi-grid-connected wind-light-electricity complementary power station |
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| CN104821609A (en) * | 2015-05-29 | 2015-08-05 | 袁铁江 | Method for controlling wind-hydrogen energy storage coupling system connected with wind electric field in distributed manner |
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Application publication date: 20111019 |