CN102496949B - Method and system capable of optimizing and controlling micro-network energy-storage system - Google Patents
Method and system capable of optimizing and controlling micro-network energy-storage system Download PDFInfo
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- CN102496949B CN102496949B CN201110430413.XA CN201110430413A CN102496949B CN 102496949 B CN102496949 B CN 102496949B CN 201110430413 A CN201110430413 A CN 201110430413A CN 102496949 B CN102496949 B CN 102496949B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims abstract description 23
- 230000005611 electricity Effects 0.000 claims abstract description 7
- 238000005286 illumination Methods 0.000 claims description 2
- 230000004044 response Effects 0.000 abstract description 8
- 238000005457 optimization Methods 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 2
- 230000000087 stabilizing effect Effects 0.000 abstract 2
- 238000007599 discharging Methods 0.000 description 6
- 238000007667 floating Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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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
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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
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The invention belongs to the field of power distribution network scheduling and management, and provides a method and a system capable of optimizing and controlling a micro-network energy-storage system. In full consideration of a distributed power supply and the characteristics of the energy-storage system, through real-time data monitoring for the active power outputted by a photovoltaic power generation system and a wind power generation system as well as the active power of the storage battery terminal voltage and the energy-storage system, combined with user' side requirement response, the requirement for stabilizing power network power and projection data of electricity utilization load, the optimization and control for the energy-storage system are realized, so the requirement of a micro-network system power balance is met, the impact on an external power network from the micro-network system is reduced, safe operation of the whole power network is ensured, the requirement of the micro-network system stabilizing the power network power fluctuation and the requirement of demand side response are met, the operation time of the micro-network system in an insulted inland is greatly prolonged, the service life of the storage battery is prolonged, and the operating stability, compatibility and economical efficiency of the micro-network are improved. Therefore, the invention has better practical significance for the popularization and application of the energy-storage system in the micro network.
Description
Technical field
The invention belongs to power distribution network scheduling and management domain, relate in particular to a kind of for microgrid energy-storage system being optimized to the method and system of control.
Background technology
Current microgrid energy-storage system is perfect not in control program, is incorporated into the power networks under pattern, and the deficiency of real time data monitoring, generated output and electro-load forecast makes very easily to cause grid power fluctuation, and electrical network is impacted, under islet operation pattern, voltage reference source when energy-storage system of accumulator is operation, control microgrid frequency and voltage and keep constant, in control program, there is reasonability problem in existing microgrid energy-storage system, if generated output is greater than load power, can cause energy-storage system of accumulator inverse probability, affect the stable operation of micro-grid system, if generated output is too less than load power, can cause batteries discharging current to be far longer than optimum discharging current, thereby greatly shortened the time of piconet island operation, and the useful life that can reduce batteries, the maintenance investment of increase system.
Summary of the invention
The invention provides a kind ofly for microgrid energy-storage system being optimized to the method and system of control, be intended to solve microgrid energy-storage system that prior art provides under the pattern of being incorporated into the power networks, very easily cause grid power fluctuation, electrical network is impacted; Under islet operation pattern, also exist energy-storage system inverse probability, batteries discharging current to be far longer than the problems such as optimum discharging current, affect micro-grid system stable operation, shortened time of piconet island operation, and the useful life that can reduce batteries, increase the problem that system maintenance is invested.
The object of the present invention is to provide a kind ofly for microgrid energy-storage system being optimized to the method for control, the method comprises the following steps:
Operational mode to micro-grid system and external electrical network judges;
When micro-grid system and external electrical network are when being incorporated into the power networks pattern, according to being incorporated into the power networks, control mode is controlled energy-storage system;
When micro-grid system and external electrical network are islet operation pattern, according to islet operation control mode, energy-storage system is controlled.
Another object of the present invention is to provide a kind of for microgrid energy-storage system being optimized to the system of control, this system comprises:
Operational mode judge module, for judging the operational mode of micro-grid system and external electrical network;
The control module that is incorporated into the power networks, for when micro-grid system and external electrical network are when being incorporated into the power networks pattern, according to being incorporated into the power networks, control mode is controlled energy-storage system;
Islet operation control module, for when micro-grid system and external electrical network are islet operation pattern, controls energy-storage system according to islet operation control mode.
Provided by the invention for microgrid energy-storage system being optimized to the method and system of control, taking into full account on the basis of distributed power source and the feature of energy-storage system own, by to photovoltaic generating system, wind generator system active power of output and accumulator voltage, the real time data monitoring of energy-storage system active power, in conjunction with user's side demand response, stabilize the requirement of grid power and the prediction data of power load, energy-storage system is optimized to control, met the requirement of micro-grid system power-balance, reduced the impact of micro-grid system to external electrical network, guarantee whole electric power netting safe running, meet micro-grid system and stabilize grid power fluctuation, the requirement of Demand Side Response, greatly extended the time of piconet island operation simultaneously, improved the useful life of batteries, reduced the maintenance investment of micro-grid system, improved its stability, compatibility and economy, promotion and application to energy-storage system in microgrid have good practical significance.
Accompanying drawing explanation
Fig. 1 show that the embodiment of the present invention provides for microgrid energy-storage system being optimized to the realization flow figure of the method for control;
Fig. 2 shows the realization flow figure of the control mode that is incorporated into the power networks that the embodiment of the present invention provides;
Fig. 3 shows the realization flow figure of the islet operation control mode that the embodiment of the present invention provides;
The flow chart of the implementation method that the energy-storage battery that Fig. 4 shows the embodiment of the present invention to be provided charges;
Fig. 5 show that the embodiment of the present invention provides for microgrid energy-storage system being optimized to the structured flowchart of the system of control.
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 described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, and be not used in restriction invention.
Fig. 1 show that the embodiment of the present invention provides for microgrid energy-storage system being optimized to the realization flow of the method for control.
The method comprises the following steps:
In step S101, the operational mode of micro-grid system and external electrical network is judged;
In step S102, when micro-grid system and external electrical network are when being incorporated into the power networks pattern, according to being incorporated into the power networks, control mode is controlled energy-storage system;
In step S103, when micro-grid system and external electrical network are islet operation pattern, according to islet operation control mode, energy-storage system is controlled.
As shown in Figure 2, in embodiments of the present invention, the control mode that is incorporated into the power networks comprises the following steps:
Set exchange power lower limit M1 and exchange power upper limit M2 that micro-grid system and external electrical network allow, and exchange power lower limit M1 < exchange power upper limit M2;
Real-Time Monitoring and obtain micro-grid system and the exchange power M3 of external electrical network and external electrical network to the transmitted power M4 of micro-grid system;
When exchange power M3 is between exchange power lower limit M1 and exchange power upper limit M2, energy-storage system is not carried out to any adjusting;
When exchange power M3 is not between exchange power lower limit M1 and exchange power upper limit M2 and external electrical network during to transmitted power M4≤0 of micro-grid system, judge whether storage battery has been full of electricity;
When storage battery is full of electricity, according to load and generating predicted power excision photovoltaic generating system and wind generator system, and take zero energy and charge as target;
When storage battery underfill when electricity, the zero energy of take is charged as target;
When exchange power M3 is not between exchange power lower limit M1 and exchange power upper limit M2 and external electrical network during to the transmitted power M4 > 0 of micro-grid system, judge whether storage battery has reached the electric discharge limit;
When storage battery has reached discharge electrode in limited time, storage battery enters holding state, and allows photovoltaic generating system and wind generator system generating according to intensity of illumination and wind speed;
When storage battery reaches discharge electrode in limited time, the zero energy of take is discharged as target.
As shown in Figure 3, in embodiments of the present invention, islet operation control mode comprises the following steps:
When the frequency that monitors micro-grid system is during lower than 49.9HZ, photovoltaic generating system, wind generator system, storage battery and load operation situation are coordinated accordingly, controlled;
When the frequency that monitors micro-grid system is during higher than 50.1HZ, the working condition of photovoltaic generating system, wind generator system, storage battery and load is coordinated accordingly, controlled.
In embodiments of the present invention, when the frequency that monitors micro-grid system is during lower than 49.9HZ, to the coordination of storage battery, control and comprise the following steps:
According to the Real-time Monitoring Data to storage battery, obtain the power sagging curve of storage battery;
Set voltage atdischarge end and the maximum discharge current of storage battery, the actual terminal voltage of Real-Time Monitoring storage battery;
When monitoring the actual terminal voltage of storage battery and be less than the voltage atdischarge end of setting, the power output of wind generator system and photovoltaic generating system is monitored, controlled;
When monitoring the actual terminal voltage of storage battery and be greater than the voltage atdischarge end of setting, according to the actual discharge electric current of the power sagging curve calculating accumulator of storage battery;
When the actual discharge electric current of storage battery is less than maximum discharge current, continue the frequency of micro-grid system to monitor;
When actual discharge electric current is greater than maximum discharge current, control storage battery and discharge with maximum discharge current, the power output of wind generator system and photovoltaic generating system is monitored, controlled simultaneously.
In embodiments of the present invention, when the frequency that monitors micro-grid system is during lower than 49.9HZ, to the coordination of wind generator system, control and comprise the following steps:
Set the peak power output of wind generator system, the real output of Real-Time Monitoring wind generator system;
When the real output of wind generator system equals peak power output, the power output of photovoltaic generating system is monitored, controlled;
When the real output of wind generator system is less than peak power output, increase the real output of wind generator system;
When the power output of storage battery and wind generator system meets requiring of total load, continue the frequency of micro-grid system to monitor;
When the power output of storage battery and wind generator system can not meet requiring of total load, the power output of photovoltaic generating system is monitored, controlled.
In embodiments of the present invention, when the frequency that monitors micro-grid system is during lower than 49.9HZ, to the coordination of photovoltaic generating system, control and comprise the following steps:
Set the peak power output of photovoltaic generating system, the real output of Real-Time Monitoring photovoltaic generating system;
When the real output of photovoltaic generating system equals peak power output, excision is corresponding loads;
When the real output of photovoltaic generating system is less than peak power output, increase the real output of photovoltaic generating system;
When the power output of storage battery, wind generator system and photovoltaic generating system meets requiring of total load, continue the frequency of micro-grid system to monitor;
When the power output of storage battery, wind generator system and photovoltaic generating system can not meet requiring of total load, excision is corresponding loads.
As shown in Figure 4, in embodiments of the present invention, the implementation method that energy-storage battery is charged is:
In step S401, charge parameter voltage U 1, voltage U 2, voltage U 3, electric current I, time T are set, and voltage U 1 < voltage U 2, voltage U 2 < voltage U 3;
In step S402, according to running situation, charge parameter voltage U 1, voltage U 2, voltage U 3, electric current I, time T dynamically to be controlled and revised, two-way inverter is with reference to the charge parameter arranging and automatically select according to the current state-of-charge of storage battery;
In step S403, when storage battery need not cause voltage lower than voltage U 1 for a long time, enter the preliminary filling stage, according to little electric current constant current charge;
In step S404, battery tension during higher than voltage U 2 and lower than voltage U 3, enters soon and fills the stage, according to 0.1C, carries out large electric current constant current voltage limiting charging;
In step S405, battery tension during higher than voltage U 3, enters all and fills the stage, according to constant voltage and current limiting mode, charges;
In step S406, all filling the stage, when charging current is during lower than electric current I, enter the floating charge stage, according to little electric current, carry out constant current voltage limiting charging;
In step S407, when floating charge process reaches setting-up time T, storage battery is full of, and proceeds to holding state.
Fig. 5 show that the embodiment of the present invention provides for microgrid energy-storage system being optimized to the structure of the system of control.For convenience of explanation, only show part related to the present invention.
This system comprises:
Operational mode judge module 51, for judging the operational mode of micro-grid system and external electrical network;
The control module 52 that is incorporated into the power networks, for when micro-grid system and external electrical network are when being incorporated into the power networks pattern, according to being incorporated into the power networks, control mode is controlled energy-storage system;
Islet operation control module 53, for when micro-grid system and external electrical network are islet operation pattern, controls energy-storage system according to islet operation control mode.
In embodiments of the present invention, the control module 52 that is incorporated into the power networks further comprises:
The grid-connected regulation and control of photovoltaic generating system unit 521, for when micro-grid system and external electrical network are incorporated into the power networks, coordinates accordingly, controls the working condition of photovoltaic generating system;
The grid-connected regulation and control of wind generator system unit 522, for when micro-grid system and external electrical network are incorporated into the power networks, coordinates accordingly, controls the working condition of wind generator system;
Storage battery grid-connected regulation and control unit 523, for when micro-grid system and external electrical network are incorporated into the power networks, coordinates accordingly, controls the working condition of storage battery;
The grid-connected regulation and control unit 524 of loading, for when micro-grid system and external electrical network are incorporated into the power networks, coordinates accordingly, controls load;
Islet operation control module 53 further comprises:
The first islet operation control module 531,, coordinates accordingly, controls photovoltaic generating system, wind generator system, storage battery and load operation situation during lower than 49.9HZ for the frequency when monitoring micro-grid system;
The second islet operation control module 532,, coordinates accordingly, controls the working condition of photovoltaic generating system, wind generator system, storage battery and load during higher than 50.1HZ for the frequency when monitoring micro-grid system.
In embodiments of the present invention, the first islet operation control module 531 further comprises:
The first photovoltaic generating system isolated island regulation and control unit 5311,, coordinates accordingly, controls the working condition of photovoltaic generating system during lower than 49.9HZ for the frequency when monitoring micro-grid system;
The first wind generator system isolated island regulation and control unit 5312,, coordinates accordingly, controls the working condition of wind generator system during lower than 49.9HZ for the frequency when monitoring micro-grid system;
The first storage battery isolated island regulation and control unit 5313,, coordinates accordingly, controls the working condition of storage battery during lower than 49.9HZ for the frequency when monitoring micro-grid system;
The first load isolated island regulation and control unit 5314,, coordinates accordingly, controls loading during lower than 49.9HZ for the frequency when monitoring micro-grid system;
The second islet operation control module 532 further comprises:
The second photovoltaic generating system isolated island regulation and control unit 5321,, coordinates accordingly, controls the working condition of photovoltaic generating system during higher than 50.1HZ for the frequency when monitoring micro-grid system;
The second wind generator system isolated island regulation and control unit 5322,, coordinates accordingly, controls the working condition of wind generator system during higher than 50.1HZ for the frequency when monitoring micro-grid system;
The second storage battery isolated island regulation and control unit 5323,, coordinates accordingly, controls the working condition of storage battery during higher than 50.1HZ for the frequency when monitoring micro-grid system;
The second load isolated island regulation and control unit 5324,, coordinates accordingly, controls loading during higher than 50.1HZ for the frequency when monitoring micro-grid system.
Below in conjunction with drawings and the specific embodiments, application principle of the present invention is further described.
The embodiment of the present invention provide for microgrid energy-storage system being optimized to the method and system of control, overcome current microgrid energy-storage system in reasonability, deficiency in stability, feature in view of distributed power source and energy-storage system itself, the present invention passes through photovoltaic generating system, wind generator system active power of output and accumulator voltage, the monitoring of the real time datas such as energy-storage system active power, in conjunction with user's side demand response, stabilize the requirement of grid power and the prediction data of power load, energy-storage system is optimized to control, to meet the requirement of micro-grid system power-balance.
When microgrid is incorporated into the power networks, (note: M1 and M2 are respectively lower limit and the upper limit of electrical network and microgrid permission exchange power to energy-storage system control program flow chart as shown in Figure 1, exchange power does not carry out any adjusting to system between this), when the output of wind generator system and photovoltaic generating system generating generating gross power is larger, energy-storage battery is charged; In the output of wind generator system and photovoltaic generating system generating gross power hour, energy-storage battery is to system discharge; According to the power curve choose reasonable according to energy-storage battery capacity and prediction wind generator system and photovoltaic generating system generating, discharge and recharge interval, maintain as far as possible for a long time gross output stable, reduce the frequency that discharges and recharges of energy-storage battery as far as possible, be that discharging and recharging of energy-storage battery adjust frequency can not be too large, otherwise can affect the useful life of battery.
During piconet island operation, energy-storage system control program flow chart as shown in Figure 2.
Energy-storage system is incorporated into the power networks and discharges and recharges control algolithm
Under grid-connected charged state, by ac bus, absorb to gain merit storage battery is charged; And can need to provide dynamic reactive according to electrical network.Grid-connected charging control is divided into preliminary filling, fills soon, all fills and floating charge four-stage, and two-way inverter arranges according to the current state-of-charge of battery and automatically selects with reference to charge parameter, and charge parameter is dynamically controlled and revises according to running situation.Automatic discrimination design parameter arranges as follows:
Storage battery need not cause brownout (lower than voltage U 1) for a long time, will first enter " preliminary filling " stage, according to little electric current constant current charge;
Battery tension, higher than voltage U 2 and lower than voltage U 3, enters " filling soon " stage automatically, according to 0.1C, carries out large electric current constant current voltage limiting charging;
Battery tension, higher than voltage U 3, enters " all filling " stage automatically, according to constant voltage and current limiting mode, charges;
In " all filling " stage, when charging current is during lower than certain little current ration, automatically enter " floating charge stage ", according to little electric current, carry out constant current voltage limiting charging.
When floating charge process reaches setting-up time, battery is full of, and automatically proceeds to holding state.
Charging is controlled parameter and is dynamically arranged according to system operation situation, automatically realizes the conversion of charge mode, controls the optimal control that discharges and recharges that energy storage inverter is realized energy storage device.
Grid-connected control of discharge: grid-connected control of discharge is according to electrical network needs, and power and the power factor optimization target dynamically controlled, be sent to external ac bus by storage battery energy inversion.
Energy-storage system islet operation discharges and recharges control algolithm
Micro-grid system and electrical network disconnect, and by energy-storage system, for loading, provide electric energy.The normal mode of operation of islet operation pattern is independent inverter mode, it refers to that ac bus and electrical network that two-way inverter is external disconnect, its AC power as constant voltage/constant frequency accesses ac bus outward, according to load, needing and the state-of-charge of storage battery, is independently the state of the load supplying that accesses on ac bus according to the instruction of master control.
Energy-storage system optimal dispatch control
(1) stabilize power fluctuation
First according to generating prediction data, calculate power stage curve, the day of formulating on this basis energy-storage system discharges and recharges strategy.Micro-grid system is followed following principle and is reached and stabilize power fluctuation object:
When the output of wind generator system and photovoltaic generating system generating generating gross power is larger, energy-storage battery is charged; In the output of wind generator system and photovoltaic generating system generating gross power hour, energy-storage battery is to system discharge.
According to the power curve choose reasonable of energy-storage battery capacity and prediction wind generator system and photovoltaic generating system generating, discharge and recharge interval, maintain as far as possible for a long time gross output stable, reduce the frequency that discharges and recharges of energy-storage battery as far as possible.Be that discharging and recharging of energy-storage battery adjust frequency can not be too large, otherwise can affect the useful life of battery.
Gross power output pulsation in wind generator system and photovoltaic generating system generating is not very large, and energy-storage battery capacity has in the situation of certain surplus, part capacity can be participated in to system loading peak load shifting.
Micro-grid system can be according to microgrid energy-storage system optimization control scheme, the impact of minimizing to external electrical network, guarantee whole electric power netting safe running, meet micro-grid system and stabilize the requirement of grid power fluctuation, Demand Side Response, improved its stability, compatibility and economy, the promotion and application to energy-storage system in microgrid have good practical significance.
The embodiment of the present invention provide for microgrid energy-storage system being optimized to the method and system of control, taking into full account on the basis of distributed power source and the feature of energy-storage system own, by to photovoltaic generating system, wind generator system active power of output and accumulator voltage, the real time data monitoring of energy-storage system active power, in conjunction with user's side demand response, stabilize the requirement of grid power and the prediction data of power load, energy-storage system is optimized to control, met the requirement of micro-grid system power-balance, reduced the impact of micro-grid system to external electrical network, guarantee whole electric power netting safe running, meet micro-grid system and stabilize grid power fluctuation, the requirement of Demand Side Response, greatly extended the time of piconet island operation simultaneously, improved the useful life of batteries, reduced the maintenance investment of micro-grid system, improved its stability, compatibility and economy, promotion and application to energy-storage system in microgrid have good practical significance.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (1)
1. for micro-grid system being optimized to a method for control, it is characterized in that, the method comprises the following steps:
Operational mode to micro-grid system and external electrical network judges;
When micro-grid system and external electrical network are when being incorporated into the power networks pattern, according to being incorporated into the power networks, control mode is controlled energy-storage system;
When micro-grid system and external electrical network are islet operation pattern, according to islet operation control mode, energy-storage system is controlled;
The control mode that is incorporated into the power networks in described method comprises the following steps:
Set exchange power lower limit M1 and exchange power upper limit M2 that micro-grid system and external electrical network allow;
Real-Time Monitoring and obtain micro-grid system and the exchange power M3 of external electrical network and external electrical network to the transmitted power M4 of micro-grid system;
When exchange power M3 is between exchange power lower limit M1 and exchange power upper limit M2, energy-storage system is not carried out to any adjusting;
When exchange power M3 is not between exchange power lower limit M1 and exchange power upper limit M2 and external electrical network during to transmitted power M4≤0 of micro-grid system, judge whether the storage battery of energy-storage system has been full of electricity;
When the storage battery of energy-storage system has been full of electricity, according to load and generating predicted power excision photovoltaic generating system and wind generator system, and take zero energy and charge as target;
When storage battery underfill when electricity of energy-storage system, the zero energy of take is charged as target;
When exchange power M3 is not between exchange power lower limit M1 and exchange power upper limit M2 and external electrical network during to the transmitted power M4 > 0 of micro-grid system, judge whether the storage battery of energy-storage system has reached the electric discharge limit;
When the storage battery of energy-storage system has reached discharge electrode in limited time, the storage battery of energy-storage system enters holding state, and allows photovoltaic generating system and wind generator system generating according to intensity of illumination and wind speed;
When the storage battery of energy-storage system does not reach discharge electrode in limited time, the zero energy of take is discharged as target.
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| CN107317341B (en) * | 2017-07-14 | 2020-06-12 | 国网辽宁省电力有限公司 | Method for realizing plug and play of distributed power supply connected to power distribution network |
| CN109558984A (en) * | 2018-12-05 | 2019-04-02 | 中南大学 | A kind of active distribution network distributed energy storage system Bi-objective hybrid optimization planing method |
| CN109672337B (en) * | 2019-01-25 | 2023-12-29 | 南京晓庄学院 | New energy power supply device capable of continuously supplying power with constant power and control method thereof |
| CN110768244B (en) * | 2019-10-14 | 2020-12-22 | 珠海格力电器股份有限公司 | Energy management system and control method thereof |
| CN115378015B (en) * | 2022-09-07 | 2023-09-05 | 上海玫克生储能科技有限公司 | Operation control method, system, equipment and medium of micro-grid |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157978A (en) * | 2011-04-14 | 2011-08-17 | 天津大学 | Wind-solar-diesel storage isolated microgrid system and control method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4754550B2 (en) * | 2007-12-20 | 2011-08-24 | 日本電信電話株式会社 | Control method of hybrid power supply system |
| JP2011097816A (en) * | 2009-09-30 | 2011-05-12 | Sanyo Electric Co Ltd | Power generation system, and charging and discharging controller |
-
2011
- 2011-12-19 CN CN201110430413.XA patent/CN102496949B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157978A (en) * | 2011-04-14 | 2011-08-17 | 天津大学 | Wind-solar-diesel storage isolated microgrid system and control method thereof |
Non-Patent Citations (3)
| Title |
|---|
| "基于纯交流母线的风光柴蓄混合发电系统研究";倪华;《中国优秀硕士学位论文全文数据库》;20060913;第65-69，83-86，89页，图5.4，7.4，7.7 * |
| JP特开2009-153295A 2009.07.09 |
| 倪华."基于纯交流母线的风光柴蓄混合发电系统研究".《中国优秀硕士学位论文全文数据库》.2006, |
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