CN202949236U - Distributed power supply control system - Google Patents

Distributed power supply control system Download PDF

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Publication number
CN202949236U
CN202949236U CN2012206382754U CN201220638275U CN202949236U CN 202949236 U CN202949236 U CN 202949236U CN 2012206382754 U CN2012206382754 U CN 2012206382754U CN 201220638275 U CN201220638275 U CN 201220638275U CN 202949236 U CN202949236 U CN 202949236U
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CN
China
Prior art keywords
energy
storage battery
unit
power supply
bus
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Expired - Fee Related
Application number
CN2012206382754U
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Chinese (zh)
Inventor
方祖华
王春
王康
洪婷婷
王友楠
吕雯
李佳佳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Ruiang Power Science & Technology Co Ltd
Shanghai Normal University
University of Shanghai for Science and Technology
Original Assignee
Suzhou Ruiang Power Science & Technology Co Ltd
Shanghai Normal University
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Priority to CN2012206382754U priority Critical patent/CN202949236U/en
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Publication of CN202949236U publication Critical patent/CN202949236U/en
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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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The utility model discloses a distributed power supply control system, which comprises a power supply unit and an energy storage unit, wherein the power supply unit comprises a plurality of groups of solar photovoltaic cells, a wind power generation system and a diesel generation system, the energy storage unit is a storage battery, the storage battery is connected with a processing unit through a data acquisition unit, the storage battery is further connected with a direct current bus through a storage battery control unit, the direct current bus supplies power for load through an output unit, the load is further connected with the processing unit through the data acquisition unit, the processing unit is further respectively connected with a solar control unit, a direct current controller and the storage battery control unit. The distributed power supply control system prevents the problems that power is cut off because residual energy of clean energy or the storage battery is not enough or the load is damaged because the energy supplied by the clean energy is too big, and further can prevent the storage battery from being overcharged and overdischarged, thereby reducing service life of the storage battery, and improving use efficiency of the clean energy.

Description

A kind of distributed power supply control system
Technical field
The utility model relates to electric power system energy conservation technology, more particularly, relates to a kind of distributed power supply control system.
Background technology
Adopting novel energy to reduce gradually and the use of substitute fossil fuels, is preserve the ecological environment and walk the vital measure of sustainable economic development road.Novel energy is that the in the recent period important energy replenishes, it is again the basis of future source of energy structure, it is larger that but most of new forms of energy are subject to the restriction of weather conditions, there are the shortcomings such as energy density is low, supply of electric power is unstable, discontinuous, can't have satisfied particularly the demand as special users such as army, communication base station and traffic.
The utility model content
For the defective that exists in prior art, the purpose of this utility model is to provide a kind of distributed power supply control system.
For achieving the above object, the utility model adopts following technical scheme:
A kind of distributed power supply control system, comprise power supply unit and energy-storage units, described power supply unit comprises some groups of solar-energy photo-voltaic cells, wind generator system and diesel generating system, and every group of solar-energy photo-voltaic cell, wind generator system and diesel generating system are connected with processing unit by corresponding data acquisition unit respectively; Every group of solar-energy photo-voltaic cell also is connected with dc bus by corresponding solar control unit respectively; Described wind generator system is connected with dc bus by rectifier and dc controller successively; Described diesel generating system is connected with dc bus by rectifier and dc controller successively;
Each solar control unit that is connected with solar-energy photo-voltaic cell, the voltage that every group of solar-energy photo-voltaic cell sent is increased to 310V, then is connected with dc bus, can carry out management separately to single photovoltaic cell and control;
Each dc controller that is connected with rectifier at 310V, then is connected the voltage stabilization after rectification with dc bus;
Described energy-storage units is storage battery, is composed in series by a plurality of storage batterys, and the direct voltage during full capacity is 310V, and like this, described storage battery is connected with processing unit by data acquisition unit; Described storage battery also is connected with dc bus by the storage battery control unit;
Described dc bus is by output unit, is the dc voltage conversion of 310V that the alternating voltage of 220V is to load supplying; Described load also is connected with processing unit by data acquisition unit;
Described processing unit also is connected with solar control unit, dc controller and storage battery control unit respectively.
Described storage battery control unit comprises connecting valve and diverter switch, and an end of described connecting valve is connected with dc bus, and the other end is connected with energy-storage units;
The moving contact of described diverter switch is connected with output unit, and the first fixed contact of diverter switch is connected with dc bus, and the second fixed contact of diverter switch is connected with energy-storage units.
Compared with prior art; adopt a kind of distributed power supply control system of the present utility model; can be according to the residual capacity of net load value and storage battery; process accordingly; not only avoid clean energy resource or storage battery dump energy deficiency and cause outage; the energy that clean energy resource provides is too large and to the hurtful problem of load; can also avoid overcharge of a battery, overdischarge; reduce the useful life of storage battery; improved the utilization ratio of clean energy resource; alleviate the serious and energy starved crisis of environmental pollution, provide reliable and stable power supply to the user.
Description of drawings
Fig. 1 is the principle schematic of a kind of distributed power supply control system of the present utility model;
Fig. 2 is the principle schematic of the power supply unit in Fig. 1;
Fig. 3 is the principle schematic of the storage battery control unit in Fig. 1.
Fig. 4 is the schematic flow sheet of concrete implementation step of the present utility model;
Fig. 5 is the schematic flow sheet of step 13 and step 14 in Fig. 4.
Embodiment
Further illustrate the technical solution of the utility model below in conjunction with drawings and Examples.
See also again a kind of distributed power supply control system shown in Figure 1, comprising:
Power supply unit 41 comprises some groups of solar-energy photo-voltaic cell 41a1,41a2 to 41an shown in Figure 2, and wind generator system 41b and diesel generating system 41c are used for providing electric energy to load;
Wherein, solar-energy photo-voltaic cell 41a1, solar-energy photo-voltaic cell 41a2, solar-energy photo-voltaic cell 41an, be used for converting solar energy into electrical energy, all be connected with a solar control unit after every photovoltaic cell, the voltage that every photovoltaic cell is sent is increased to 310V, be connected with dc bus again, can carry out management separately to single photovoltaic cell and control;
Wind generator system 41b, being used for wind energy transformation is electric energy, the electric energy that wind generator system sends exchanges, and need to first pass through rectifier, then by dc controller, and the voltage stabilization after rectification at 310V, then is connected with dc bus;
Internal combustion engine 41c is used for diesel oil is converted into electric energy, as the additional energy of clean energy resource, has improved the reliability of whole electric power system.The electric energy that internal combustion engine power generating system sends exchanges, and need to first pass through rectifier, then by dc controller, and the voltage stabilization after rectification at 310V, then is connected with dc bus.
Energy-storage units 42 is storage battery, is composed in series by a plurality of storage batterys, and the direct voltage during full capacity is 310V, is used for storing unnecessary clean energy resource, for the voltage of load electricity consumption and stable DC bus.
Control unit 431, comprise solar control unit and dc controller, be used for controlling in power supply unit being connected between single group solar-energy photo-voltaic cell, wind generator system and diesel generating system and dc bus, the energy flow between power supply unit and dc bus is unidirectional;
Each solar control unit that is connected with solar-energy photo-voltaic cell, the voltage that every group of solar-energy photo-voltaic cell sent is increased to 310V, then is connected with dc bus, can carry out management separately to single photovoltaic cell and control.
Each dc controller that is connected with rectifier at 310V, then is connected the voltage stabilization after rectification with dc bus.
Storage battery control unit 432 is used for controlling being connected between storage battery and dc bus, controls discharging and recharging of energy-storage units, and the energy flow between energy-storage units and dc bus is two-way;
Output unit 44 is used for the converting direct-current voltage into alternating-current voltage on dc bus;
Load unit 45, AC load;
Data acquisition unit 461 is used for gathering the power of load unit;
Dc bus is by output unit 44, is the dc voltage conversion of 310V that the alternating voltage of 220V is to load supplying; Load also is connected with processing unit 47 by data acquisition unit 461;
Data acquisition unit 462 is used for gathering the power output of single group solar-energy photo-voltaic cell and the power output of wind generator system;
Data acquisition unit 463 is used for gathering the residual capacity of current storage battery;
Processing unit 47 is used for processing the data of described collection, calculates net load, according to the residual capacity of net load value and storage battery, carries out respective handling: send order to control unit 431 and control unit 432.
Storage battery control unit 432 shown in Figure 3 comprises connecting valve 432a and diverter switch 432b again,
Connecting valve 432a is used for controlling to energy-storage units 42 chargings;
Diverter switch 432b is used for controlling energy-storage units 42 discharges;
When connecting valve 432a closure, a of diverter switch 432b, when the b termination was led to, power supply unit also will charge to energy-storage units except electric energy is provided to load, steps d 2;
When connecting valve 432a closure, the moving contact a of diverter switch 432b, when the second fixed contact c connected, power supply unit and energy-storage units be powering load together;
When connecting valve 432a disconnection, the moving contact a of diverter switch 432b, when the first fixed contact b connects, the power supply unit powering load;
When connecting valve 432a disconnection, the moving contact a of diverter switch 432b, when the second fixed contact c connects, the energy-storage units powering load.
the utility model by the supplied for electronic unit in power supply unit as single group solar-energy photo-voltaic cell, wind generator system and internal combustion engine power generating system, independently solar control unit by being connected with each solar-energy photo-voltaic cell respectively, the dc controller that is connected with wind generator system, the dc controller that is connected with internal combustion engine power generating system, the output voltage of each supplied for electronic unit in power supply unit is boosted to 310V, be connected with dc bus, can carry out management separately to each power supply unit like this controls, be that the 220V alternating voltage is to load supplying with the 310V dc voltage conversion on dc bus again, energy-storage units is composed in series by a plurality of storage batterys, and energy-storage units is connected with load with dc bus respectively with diverter switch by connecting valve, and the direct voltage during full capacity is 310V.
The implementation step of a kind of distributed power supply control system of the present utility model is as Fig. 4, shown in Figure 5,
11. processing unit is provided by the residual capacity of the current electric energy that can provide of the clean energy resource electric power system that is comprised of solar-energy photo-voltaic cell and wind generator system, storage battery and the data of the required electric weight of load;
12. processing unit calculates current net load, the computing formula of described net load Δ P is:
ΔP＝(P PV+P W)-P L，
Wherein, Ppv represents respectively to organize the summation of solar-energy photo-voltaic cell power output, and Pw represents the power output of wind generator system, P LThe required power consumption of expression load;
13,14. residual capacities according to net load value and storage battery, processing unit are judged the electric energy that provided by clean energy resource or/and storage battery is powered to load;
Perhaps, by internal combustion engine power generating system to load is powered.
Net load value in described step 13 judges that greater than 0 o'clock whether the residual capacity of described storage battery is less than default maximum battery capacity threshold value;
If, by the clean energy resource electric power system, load to be powered, the clean energy resource electric power system also will be to charge in batteries, until the capacity of storage battery reaches maximum battery capacity threshold value;
Otherwise, close some groups of solar-energy photo-voltaic cells corresponding in the clean energy resource electric power system, make the required power consumption of electric energy that the clean energy resource electric power system can provide and load be complementary, and load is powered.
Net load value in described step 13 equals at 0 o'clock, judges that whether the residual capacity of described storage battery is greater than default minimum battery capacity threshold value;
If, by the clean energy resource electric power system, load to be powered, storage battery provides the stable DC bus required electric weight;
Otherwise, by internal combustion engine power generating system, load is powered, simultaneously, the clean energy resource electric power system is to charge in batteries, until the capacity of storage battery reaches maximum battery capacity threshold value.
Net load value in described step 13 judges that less than 0 o'clock whether the residual capacity of described storage battery is less than default minimum battery capacity threshold value;
If, by internal combustion engine power generating system, load is powered, simultaneously, the clean energy resource electric power system is to charge in batteries, until the capacity of storage battery reaches maximum battery capacity threshold value;
Otherwise, by storage battery, load is powered, simultaneously, the clean energy resource electric power system is to charge in batteries.
Those of ordinary skill in the art will be appreciated that, above embodiment illustrates the purpose of this utility model, and be not with opposing restriction of the present utility model, as long as in essential scope of the present utility model, all will drop in the scope of claim of the present utility model variation, the modification of the above embodiment.

Claims (2)

1. distributed power supply control system is characterized in that:
Comprise power supply unit and energy-storage units, described power supply unit comprises some groups of solar-energy photo-voltaic cells, wind generator system and diesel generating system, and every group of solar-energy photo-voltaic cell, wind generator system and diesel generating system are connected with processing unit by corresponding data acquisition unit respectively; Every group of solar-energy photo-voltaic cell also is connected with dc bus by corresponding solar control unit respectively; Described wind generator system is connected with dc bus by rectifier and dc controller successively; Described diesel generating system is connected with dc bus by rectifier and dc controller successively;
Described energy-storage units is storage battery, and described storage battery is connected with processing unit by data acquisition unit; Described storage battery also is connected with dc bus by the storage battery control unit;
Described dc bus by output unit to load supplying; Described load also is connected with processing unit by data acquisition unit;
Described processing unit also is connected with solar control unit, dc controller and storage battery control unit respectively.
2. distributed power supply control system according to claim 1 is characterized in that:
Described storage battery control unit comprises connecting valve and diverter switch, and an end of described connecting valve is connected with dc bus, and the other end is connected with energy-storage units;
The moving contact of described diverter switch is connected with output unit, and the first fixed contact of diverter switch is connected with dc bus, and the second fixed contact of diverter switch is connected with energy-storage units.
CN2012206382754U 2012-11-28 2012-11-28 Distributed power supply control system Expired - Fee Related CN202949236U (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102931722A (en) * 2012-11-28 2013-02-13 上海师范大学 Distributed power supply management method and system
CN103457296A (en) * 2013-08-08 2013-12-18 许继集团有限公司 Method for switching independent operation micro-grid master control power sources
CN110034557A (en) * 2019-04-04 2019-07-19 中国电子科技集团公司第四十八研究所 A kind of ocean anchoring floating platform energy supplyystem and control method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102931722A (en) * 2012-11-28 2013-02-13 上海师范大学 Distributed power supply management method and system
CN103457296A (en) * 2013-08-08 2013-12-18 许继集团有限公司 Method for switching independent operation micro-grid master control power sources
CN103457296B (en) * 2013-08-08 2016-02-24 许继集团有限公司 A kind of independent operating micro-grid master control power-supply switching method
CN110034557A (en) * 2019-04-04 2019-07-19 中国电子科技集团公司第四十八研究所 A kind of ocean anchoring floating platform energy supplyystem and control method

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130522

Termination date: 20151128