CN104092236A - Hybrid renewable energy and energy storage system power supply system and control method thereof - Google Patents

Hybrid renewable energy and energy storage system power supply system and control method thereof Download PDF

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Publication number
CN104092236A
CN104092236A CN201410260358.8A CN201410260358A CN104092236A CN 104092236 A CN104092236 A CN 104092236A CN 201410260358 A CN201410260358 A CN 201410260358A CN 104092236 A CN104092236 A CN 104092236A
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energy
power
storage
mixed type
load
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CN201410260358.8A
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CN104092236B (en
Inventor
薛清益
吴武杰
黄伟
林亦欣
廖仁忠
吕光钦
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中华电信股份有限公司
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    • Y02A30/62
    • Y02B10/72
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

Abstract

A hybrid renewable energy and energy storage system power supply system and a control method thereof integrate an electrochemical energy storage device with a mechanical energy storage device, and then match a solar photovoltaic and wind power generation system, and are grid-connected with a mains supply. In the control concept, an AC-DC is supplied preferentially to an AC-DC load, to reduce the conversion loss. The power supply system allows residence, base stations or computer rooms to be electricity self-sufficient, can conduct electric power trading with electric power companies when being grid connected with the mains supply, can avoid electric transient interruption during power outage and can also ensure a certain degree of power supply.

Description

The mixed type renewable energy resources and energy-storage system electric power system and control method thereof

Technical field

The present invention relates to micro-electric power network technique application, be particularly related to a kind of mixed type renewable energy resources and energy-storage system electric power system and control method thereof, can carry out energy conservation service in conjunction with iEN (Intelligent Energy Network) intelligent type energy saving service monitoring system, can apply to house, base station or machine room generating equipment, be one of iEN future development technology.

Background technology

Because energy storage and the energy supplying system of the integration natural energy resources of front case, this front case is applied to wind-force and solar energy source and converts to energy storage and the feed system of electric energy, heat energy and cold energy, wind-force and solar energy binomial natural energy resources are except producing electric power storage and supplying with, do not needing under extra power conditions, to produce heat energy and cold energy, supply with the cooling and hot water demand of air-conditioning, make full use of natural energy resources and replace the equipment such as air-conditioner host and boiler.But this front case cannot be adjusted generating equipment (fuel cell, wind power generation, solar photoelectric, flying wheel battery, lithium Fe battery) power supply order with electricity price on demand in different periods (spike, from peak and power failure), the reliability and reduce cost of electricity-generating of effectively guaranteeing to power; Cannot preferentially provide corresponding properties electric power for heterogeneity load, for example, direct current power preferentially not supplied with to DC load etc., have the problems such as power loss.

As can be seen here, above-mentioned existing mode still has many disappearances, a real non-kindhearted design, and urgently improved.

Summary of the invention

Reach the mixed type renewable energy resources and energy-storage system electric power system and the control method thereof of foregoing invention object, refer to a kind of all kinds of energy-storage system (fuel cell, lithium iron phosphoric acid battery, flying wheel battery) all exist certain shortcoming and limitation with regeneration energy resource system (solar photoelectric and wind power generation), due to the inherent characteristic of energy-storage system and the renewable energy resources itself, if will improve the cost of paying again on research and development and cost to it, the combination of multiple energy-storage system and the renewable energy resources just can be maximized favourable factors and minimized unfavourable ones, give full play to the advantage of various devices, realize the self-centered requirement of electricity consumption, and can the extension device life-span.

This patent proposes mixed type energy-storage system and renewable energy resources construction for electricity, to integrate electric chemical formula energy storage device (lithium iron phosphoric acid battery and fuel cell) and mechanical energy storage device (flying wheel battery), arrange in pairs or groups again solar photoelectric and wind generator system, and with the Hang Merger net of civil power Jin, can be used as house, base station or machine room electric power system and use.

The mixed type renewable energy resources of the present invention and energy-storage system electric power system, wherein this system comprises mechanical energy storage device, for energy accumulation device for fly wheel, connect civil power and according to turn round the voluntarily device of energy storage of the law of inertia, according to the emergency service device of special case, mixed type electric supply installation, the renewable energy resources construction for electricity and integration electric chemical formula energy storage device connecting, AC/DC changeover switch, to be connected with this mixed type electric supply installation, and be connected with alternating current-direct current load end, demand according to this alternating current-direct current load end provides supplied by AC/DC electricity and control unit, receive the signal of this mixed type electric supply installation and this alternating current-direct current load, control this supplied by AC/DC electricity degree of monitoring, wherein, this mechanical energy storage device is with the low power mode energy storage of turning round, and this mixed type electric supply installation is supplied with this alterating and direct current by this AC/DC changeover switch according to control unit judgement and is come from alternating current-direct current load end.

The mixed type renewable energy resources as above and energy-storage system electric power system, wherein this renewable energy resources construction for electricity is that solar photoelectric, wind power generation, fuel cell are supplied with this alternating current-direct current load, this integration electric chemical formula energy storage device is flying wheel battery and lithium iron phosphoric acid battery, excrescent electric power is charged to this flying wheel battery and this lithium iron phosphoric acid battery, use as electric power backup.

Wherein this system is connected with Shi electricity Merger net, carries out power test and monitoring with Utilities Electric Co., in order to avoid electric power hit, keeps electrical power stabilization sustainable supply.

If meet power failure period, this wind power generation, this solar photoelectric and this fuel cell-powered amount are during much smaller than the required load of alternating current-direct current load end, this control unit starts this flying wheel battery and this lithium iron phosphoric acid battery is powered, and inessential load is carried out to removal, supply with necessary load time to extend this system.

This system sequentially utilizes this solar photoelectric, this wind power generation, this fuel cell and this civil power to power, and excrescent electric power is charged to this flying wheel battery and this lithium iron phosphoric acid battery.

The mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply, comprise the following steps:

1. civil power supply of electrical energy is in mechanical energy storage device, this mechanical energy storage device is the energy accumulation device for fly wheel of energy storage of turning round voluntarily, and be connected with mixed type electric supply installation, by the AC/DC changeover switch and the control unit that are connected, judge and carry out the supply and demand power requirement of alternating current-direct current load end;

2. this civil power supply power, in this energy accumulation device for fly wheel, makes this energy accumulation device for fly wheel carry out low-power coasting;

3. this AC/DC changeover switch judges the equilibrium of supply and demand of this mixed type electric supply installation and this alternating current-direct current load end by control unit;

4. in the time that power supply is greater than demand, by electrical power storage;

5. when demand is greater than when power supply, this mixed type electric supply installation sustainable supply power supply; And

6. this control unit judges required power of alterating and direct current demand, exports alternating current-direct current load end to by AC/DC changeover switch.

The mixed type renewable energy resources as above and energy-storage system method for controlling power supply, wherein the method is in control concept, and alternating current is preferentially supplied with AC load, and direct current is preferentially supplied with DC load, in order to reduce conversion consume.

The mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply, wherein the method is in electricity consumption peak hour, and the energy source of this mixed type electric supply installation sequentially utilizes the fuel cell of solar photoelectric, wind power generation and this integration electric chemical formula energy storage device and lithium iron phosphoric acid battery to power.

Compared to prior art or method, the mixed type renewable energy resources and energy-storage system electric power system and the Shi electricity Merger net of utilizing of the present invention, can carry out the allotment of electricity profit according to special circumstances, and excrescent electric power can be stored to Mai Hui Utilities Electric Co., reach energy-conservation and can arrange the required object of allotment electric power.

The described mixed type renewable energy resources and energy-storage system method for controlling power supply, wherein the method is in from the peak period, the energy source of this mixed type electric supply installation sequentially utilizes fuel cell and the civil power of solar photoelectric, wind power generation and this integration electric chemical formula energy storage device to power, and excrescent electric power is charged to this energy accumulation device for fly wheel battery and this lithium iron phosphoric acid battery.

The described mixed type renewable energy resources and energy-storage system method for controlling power supply, wherein the method is in the time of power failure or power-off, and the electric power that this energy accumulation device for fly wheel and this lithium iron phosphoric acid battery produce, supplies with immediately this alternating current-direct current load and uses, and the electric power of interruption is provided.

The described mixed type renewable energy resources and energy-storage system method of supplying power to, wherein, after this system run all right, the energy source of this mixed type electric supply installation sequentially utilizes this solar photoelectric, wind power generation and fuel cell supply load again.The mixed type renewable energy resources provided by the present invention and energy-storage system electric power system and control method thereof, while mutually comparing with other prior aries, integrate electric chemical formula energy-storage system (lithium iron phosphoric acid battery, fuel cell), mechanical energy storage system (flying wheel battery), solar photoelectric and wind generator system, and enter row Merger net with civil power, have more standby following advantages:

1. alternating current is preferentially supplied with AC load, and direct current is preferentially supplied with DC load, reduces conversion consume.

2. the electricity charge of electricity consumption spike period are more expensive, electric power bulk sale price is higher, system sequentially utilizes solar photoelectric, wind power generation, fuel cell and lithium iron phosphoric acid battery to power, electricity consumption can be self-sufficient, and excrescent electric power can be returned and sold Utilities Electric Co., and continue Fly wheel energy storage system to charge, use as electric power backup.

3. more cheap with the ionization peak period electricity charge, electric power bulk sale price is lower, and system sequentially utilizes solar photoelectric, wind power generation, fuel cell and civil power to power, and excrescent electric power is charged to flying wheel battery and lithium iron phosphoric acid battery.

4. while power failure suddenly, the electric power that flywheel and lithium iron phosphoric acid battery produce, directly supply load uses, and as the switching bridge of power breakdown, provides the electric power of zero interruption.After system run all right, system is sequentially utilized solar photoelectric, wind power generation, fuel cell supply load, and excrescent electric power is charged to flying wheel battery and lithium iron phosphoric acid battery, uses as electric power backup.If interruption duration is long, wind power generation, solar photoelectric, fuel cell power generation amount during much smaller than load, are powered startup flying wheel battery and lithium Fe battery, and inessential load are carried out to removal, system need maintain energy output and be greater than load capacity state, supplies with necessary load time to extend.

Brief description of the drawings

Fig. 1 is the Organization Chart of the mixed type renewable energy resources of the present invention and energy-storage system electric power system;

Fig. 2 is the flow chart of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply;

Fig. 3 is the control flow chart (1) of the spike period of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply;

Fig. 4 is the control flow chart (2) of the spike period of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply;

Fig. 5 is the control flow chart (3) of the spike period of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply;

Fig. 6 is the control flow chart (4) of the spike period of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply;

Fig. 7 is the control flow chart from the peak period (1) of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply;

Fig. 8 is the control flow chart from the peak period (2) of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply;

Fig. 9 is the control flow chart from the peak period (3) of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply;

Figure 10 is the control flow chart (1) of the power failure period of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply;

Figure 11 is the control flow chart (2) of the power failure period of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply;

Figure 12 is the control flow chart (3) of the power failure period of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply.

Symbol description

10 civil powers

20 mechanical energy storage devices

21 energy accumulation device for fly wheel

30 mixed type electric supply installations

31 renewable energy resources construction for electricities

311 solar photoelectrics

312 wind power generations

313 fuel cells

32 integrate electric chemical formula energy storage device

322 lithium iron phosphoric acid batteries

40 AC/DC changeover switch

50 alternating current-direct current loads

51 AC load

511 necessary AC load

52 DC load

521 necessary DC load

60 control units

50 alternating current-direct current loads

51 exchange

52 direct currents

60 control units

S11~S16 method flow diagram

Embodiment

In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, but be not intended to limit the present invention.

Below, the present invention is further described by reference to the accompanying drawings:

Referring to Fig. 1 is the Organization Chart of the mixed type renewable energy resources of the present invention and energy-storage system electric power system,

A kind of mixed type renewable energy resources and energy-storage system electric power system, wherein this system at least comprises mechanical energy storage device 20, can be energy accumulation device for fly wheel 21, connect civil power and according to turn round the voluntarily device of energy storage of the law of inertia, according to the emergency service device of special case, coordinate actual demand and adjust, mixed type electric supply installation 30, the renewable energy resources construction for electricity 31 and integration electric chemical formula energy storage device 32 connecting, AC/DC changeover switch 40, to be connected with this mixed type electric supply installation 30, and be connected with alternating current-direct current load end 40, demand according to this alternating current-direct current load end provides supplied by AC/DC electricity and control unit, receive the signal of this mixed type electric supply installation 30 and this alternating current-direct current load, control this supplied by AC/DC electricity degree of monitoring, wherein, this mechanical energy storage device 20 is with the low power mode energy storage of turning round, and this mixed type electric supply installation 30 is supplied with this alterating and direct current by this AC/DC changeover switch 40 according to control unit judgement and is come from alternating current-direct current load end.

Referring to Fig. 2 is the flow chart of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply.

S11 civil power supply of electrical energy is in mechanical energy storage device, this mechanical energy storage device is the energy accumulation device for fly wheel of energy storage of turning round voluntarily, and be connected with mixed type electric supply installation, by the AC/DC changeover switch and the control unit that are connected, judge and carry out the supply and demand power requirement of alternating current-direct current load end;

This civil power supply power of S12, in this energy accumulation device for fly wheel, makes this energy accumulation device for fly wheel carry out low-power coasting;

This AC/DC changeover switch of S13 judges the equilibrium of supply and demand of this mixed type electric supply installation and this alternating current-direct current load end by control unit;

S14 is in the time that power supply is greater than demand, by electrical power storage;

S15 is greater than when power supply, this mixed type electric supply installation sustainable supply power supply when demand;

This control unit of S16 judges required power of alterating and direct current demand, exports alternating current-direct current load end to by AC/DC changeover switch.

Alternating current is preferentially supplied with AC load, and direct current is preferentially supplied with DC load, and according to the different periods (spike period, from the peak period, have a power failure the period), proposes different control methods:

Referring to Fig. 3 is the control flow chart (1) of the spike period of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply, comprises following steps:

[1] electricity charge of spike period are more expensive, and electric power bulk sale price is higher, and system adopts different control methods according to different situations:

Control method 1:

In the time that wind power generation 312 and solar photoelectric 311 energy output are greater than AC load 51 with DC load 52, the preferential AC load 51 of supplying with of wind power generation 312, and the preferential DC load 52 of supplying with of solar photoelectric 311, if having not enough part again by mutual direct current or the AC load supplied with of AC/DC changeover switch 40.Then by remaining electricity, and the electric energy that produces of fuel cell 313 and lithium iron phosphoric acid battery 322 returns and sells Utilities Electric Co..

Referring to Fig. 4 is the control flow chart (2) of the spike period of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply, comprises following steps:

Control method 2:

In the time that wind power generation 312, solar photoelectric 311 are greater than AC load 51 with DC load 52 with fuel cell 313 energy output, the preferential AC load 51 of supplying with of wind power generation 312, and solar photoelectric 311, fuel cell 313 are supplied with DC load 52 successively, if having not enough part again by mutual direct current or the AC load supplied with of AC/DC changeover switch 40.Then by remaining electricity, and the electric energy that produces of lithium iron phosphoric acid battery 322 returns and sells Utilities Electric Co..

Referring to Fig. 5 is the control flow chart (3) of the spike period of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply, comprises following steps:

Control method 3:

In the time that wind power generation 312, solar photoelectric 311, fuel cell 313 are greater than AC load 51 with DC load 52 with lithium iron phosphoric acid battery 322 energy output, the preferential AC load 51 of supplying with of wind power generation 312, and solar photoelectric 311, fuel cell 313, lithium iron phosphoric acid battery 322 are sequentially supplied with DC load 52, if have not enough part to supply with direct current or AC load by AC/DC changeover switch 40 is mutual again, and dump energy returned and sells Utilities Electric Co..

Referring to Fig. 6 is the control flow chart (4) of the spike period of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply, comprises following steps:

Control method 4:

In the time that wind power generation 312, solar photoelectric 311, fuel cell 313 are less than AC load 51 with DC load 52 with lithium iron phosphoric acid battery 322 energy output, the preferential AC load 51 of supplying with of wind power generation 312, and solar photoelectric 311, fuel cell 313, lithium iron phosphoric acid battery 322 are sequentially supplied with DC load 52, if have not enough part again by mutual direct current or the AC load supplied with of AC/DC changeover switch 40, not enough electric power is provided by civil power 10.

Referring to Fig. 7 is the control flow chart from the peak period (1) of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply, comprises following steps:

[2] from the peak period

More cheap from the peak period electricity charge, electric power bulk sale price is lower, and system adopts different control methods according to different situations:

Control method 1:

In the time that wind power generation 312 and solar photoelectric 311 energy output are greater than AC load 51 with DC load 52, the preferential AC load 51 of supplying with of wind power generation 312, the preferential DC load 52 of supplying with of solar photoelectric 311, if have not enough part again by mutual direct current or the AC load supplied with of AC/DC changeover switch 40, and unnecessary electric power is charged to flying wheel battery and lithium iron phosphoric acid battery 322, use as electric power backup, and fuel cell 313 does not start.

Referring to Fig. 8 is the control flow chart from the peak period (2) of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply, comprises following steps:

Control method 2:

In the time that wind power generation 312, solar photoelectric 311 are greater than AC load 51 with DC load 52 with fuel cell 313 energy output, the preferential AC load 51 of supplying with of wind power generation 312, and solar photoelectric 311, fuel cell 313 are supplied with DC load 52 successively, if have not enough part again by mutual direct current or the AC load supplied with of AC/DC changeover switch 40, use electric power is self-sufficient, and excrescent electric power can be charged to flying wheel battery and lithium iron phosphoric acid battery 322, use as electric power backup.

Referring to Fig. 9 is the control flow chart from the peak period (3) of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply, comprises following steps:

Control method 3:

In the time that wind power generation 312, solar photoelectric 311, fuel cell 313 energy output are less than AC load 51 with DC load 52, the preferential AC load 51 of supplying with of wind power generation 312, and solar photoelectric 311, fuel cell 313 are sequentially supplied with DC load 52, and by mutual direct current or the AC load supplied with of AC/DC changeover switch 40, the part of power shortage is provided by civil power 10, and flying wheel battery and lithium iron phosphoric acid battery 322 do not start as electric power backup and use.

Referring to Figure 10 is the control flow chart (1) of the power failure period of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply, comprises following steps:

[3] have a power failure the period

Suddenly, while power failure, for avoiding electric power hit, system is adopted control method below:

Control method 1:

The switching bridge that flying wheel battery and lithium Fe battery 322 interrupt suddenly as electric power, load electric is provided at once, the target of interrupting to reach electric power zero, solar photoelectric 311, wind power generation 312, fuel cell 313 supply load successively again, and by mutual direct current or the AC load supplied with of AC/DC changeover switch 40.

Referring to Figure 11 is the control flow chart (2) of the power failure period of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply, comprises following steps:

After power failure is stable, system adopts different control methods according to different situations again:

Control method 2:

In the time that wind power generation 312, solar photoelectric 311, fuel cell 313 energy output are greater than AC load 51 with DC load 52, the preferential AC load 51 of supplying with of wind power generation 312, and solar photoelectric 311, fuel cell 313 are supplied with DC load 52 successively, if have not enough part again by mutual direct current or the AC load supplied with of AC/DC changeover switch 40, and excrescent electric power is charged to flying wheel battery and lithium iron phosphoric acid battery 322, use as electric power backup.

Referring to Figure 12 is the control flow chart (3) of the power failure period of the mixed type renewable energy resources of the present invention and energy-storage system method for controlling power supply, comprises following steps:

Control method 3:

Interruption duration is long, when wind power generation 312, solar photoelectric 311, fuel cell 313 energy output are less than load, starting flying wheel battery and lithium iron phosphoric acid battery 322 powers, and inessential DC load 521 is carried out to removal with necessary AC load 511, system held energy output is greater than load capacity state, supplies with necessary load time with prolongation system.

Above-listed detailed description is to be specifically described for possible embodiments of the present invention, and only this embodiment is not in order to limit the scope of the claims of the present invention, does not allly depart from the equivalence that skill spirit of the present invention does and implements or change, and all should be contained in the scope of the claims of this case.

Claims (11)

1. the mixed type renewable energy resources and an energy-storage system electric power system, is characterized in that, this system comprises:
Mechanical energy storage device, is energy accumulation device for fly wheel, connects civil power and according to turn round the voluntarily device of energy storage of the law of inertia, according to the emergency service device of special case;
Mixed type electric supply installation is the renewable energy resources construction for electricity and integration electric chemical formula energy storage device connecting;
AC/DC changeover switch, is to be connected with this mixed type electric supply installation, and is connected with alternating current-direct current load end, provides supplied by AC/DC electricity according to the demand of this alternating current-direct current load end; And
Control unit, receives the signal of this mixed type electric supply installation and this alternating current-direct current load, controls this supplied by AC/DC electricity degree of monitoring;
Wherein, this mechanical energy storage device is with the low power mode energy storage of turning round, and this mixed type electric supply installation is supplied with this alterating and direct current by this AC/DC changeover switch according to control unit judgement and come from alternating current-direct current load end.
2. the mixed type renewable energy resources according to claim 1 and energy-storage system electric power system, it is characterized in that, this renewable energy resources construction for electricity is that solar photoelectric, wind power generation, fuel cell are supplied with this alternating current-direct current load, this integration electric chemical formula energy storage device is flying wheel battery and lithium iron phosphoric acid battery, excrescent electric power is charged to this flying wheel battery and this lithium iron phosphoric acid battery, use as electric power backup.
3. the mixed type renewable energy resources according to claim 2 and energy-storage system electric power system, is characterized in that, this system is connected with Shi electricity Merger net, carries out power test and monitoring with Utilities Electric Co..
4. the mixed type renewable energy resources according to claim 2 and energy-storage system electric power system, it is characterized in that, if meet power failure period, this wind power generation, this solar photoelectric and this fuel cell-powered amount are during much smaller than the required load of alternating current-direct current load end, this control unit starts this flying wheel battery and this lithium iron phosphoric acid battery is powered, and inessential load is carried out to removal, supply with necessary load time to extend this system.
5. the mixed type renewable energy resources according to claim 2 and energy-storage system electric power system, it is characterized in that, this system sequentially utilizes this solar photoelectric, this wind power generation, this fuel cell and this civil power to power, and excrescent electric power is charged to this flying wheel battery and this lithium iron phosphoric acid battery.
6. the mixed type renewable energy resources and an energy-storage system method for controlling power supply, is characterized in that, step comprises:
A. civil power supply of electrical energy is in mechanical energy storage device, this mechanical energy storage device is the energy accumulation device for fly wheel of energy storage of turning round voluntarily, and be connected with mixed type electric supply installation, by the AC/DC changeover switch and the control unit that are connected, judge and carry out the supply and demand power requirement of alternating current-direct current load end;
B. this civil power supply power, in this energy accumulation device for fly wheel, makes this energy accumulation device for fly wheel carry out low-power coasting;
C. this AC/DC changeover switch judges the equilibrium of supply and demand of this mixed type electric supply installation and this alternating current-direct current load end by control unit;
D. in the time that power supply is greater than demand, by electrical power storage;
E. when demand is greater than when power supply, this mixed type electric supply installation sustainable supply power supply; And
F. this control unit judges required power of alterating and direct current demand, exports alternating current-direct current load end to by AC/DC changeover switch.
7. the mixed type renewable energy resources according to claim 6 and energy-storage system method for controlling power supply, is characterized in that, the method is in control concept, and alternating current is preferentially supplied with AC load, and direct current is preferentially supplied with DC load.
8. the mixed type renewable energy resources according to claim 6 and energy-storage system method for controlling power supply, it is characterized in that, the method is in electricity consumption peak hour, and the energy source of this mixed type electric supply installation sequentially utilizes the fuel cell of solar photoelectric, wind power generation and this integration electric chemical formula energy storage device and lithium iron phosphoric acid battery to power.
9. the mixed type renewable energy resources according to claim 6 and energy-storage system method for controlling power supply, it is characterized in that, the method is in from the peak period, the energy source of this mixed type electric supply installation sequentially utilizes fuel cell and the civil power of solar photoelectric, wind power generation and this integration electric chemical formula energy storage device to power, and excrescent electric power is charged to this energy accumulation device for fly wheel battery and this lithium iron phosphoric acid battery.
10. the mixed type renewable energy resources according to claim 6 and energy-storage system method for controlling power supply, it is characterized in that, the method is in having a power failure or when power-off, the electric power that this energy accumulation device for fly wheel and this lithium iron phosphoric acid battery produce, supply with immediately this alternating current-direct current load and use, the electric power of interruption is provided.
The 11. mixed type renewable energy resources according to claim 9 and energy-storage system method for controlling power supply, it is characterized in that, after this system run all right, the energy source of this mixed type electric supply installation sequentially utilizes this solar photoelectric, wind power generation and fuel cell supply load again.
CN201410260358.8A 2013-10-01 2014-06-12 The mixed type renewable sources of energy and energy-storage system electric power system and its control method CN104092236B (en)

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