CN105896610A - Micro-grid scheduling method - Google Patents
Micro-grid scheduling method Download PDFInfo
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- CN105896610A CN105896610A CN201610510047.1A CN201610510047A CN105896610A CN 105896610 A CN105896610 A CN 105896610A CN 201610510047 A CN201610510047 A CN 201610510047A CN 105896610 A CN105896610 A CN 105896610A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 238000004146 energy storage Methods 0.000 claims description 25
- 238000011068 loading method Methods 0.000 claims description 4
- 230000007812 deficiency Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
Classifications
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- H02J3/382—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a micro-grid scheduling method. The micro-grid scheduling method comprises the following steps that: a micro-grid energy management system acquires internal loads of micro-grids and the power and capacity situations of power supplies in real time, transmits the internal loads of the micro-grids and the power and capacity situations of the power supplies to a main grid management system, and receives information and a command of the main grid management system; if the internal output power of one of the micro-grids is insufficient to carry the load of the micro-grid, the main grid management system calculates regulation parameter factors lambda of other micro-grids according to the monitoring parameters of the other micro-grids, the main grid management system selects a plurality of micro-grids if the regulation parameter factors lambda of the other micro-grids are not greater than 1, and power is supplied to the micro-grid of which the internal output power is insufficient, wherein the sum of the regulation parameter factors lambda of the plurality of micro-grids is greater than 1.
Description
Technical field
The present invention relates to micro-capacitance sensor technology, particularly relate to a kind of micro-capacitance sensor energy storage dispatching method.
Background technology
Global energy crisis and environmental problem promote the fast development of renewable energy power generation.Utilization and extention along with regenerative resource; for giving full play to distributed power generation advantage and potential; the concept of micro-capacitance sensor is suggested; micro-capacitance sensor refers to small-sized the distribution system collected by distributed power source, energy storage device, energy converter, associated loadings and monitoring, protection device, is an autonomous system being capable of self-contr ol, protecting and manage.
The miniature power network that micro-capacitance sensor is made up of distributed generation system, energy-storage system and load, optional being incorporated into the power networks with power distribution network also may select independent operating as required.In the normal mode of operation, micro-capacitance sensor and public system parallel running, can be by reasonably controlling the constant load making micro-capacitance sensor be equivalent to power distribution network；And when the existing fault of public system or the quality of power supply do not reach when requiring, micro-capacitance sensor can cut off the connection with external electrical network by isolating device, thus realize isolated operation.
Micro-capacitance sensor has huge social and economic effects, is the most effective mode playing distributed electrical source efficiency.Micro-capacitance sensor itself runs control characteristic and requires that it uses distributed energy storage, and energy storage as the core link in micro-capacitance sensor, at micro-capacitance sensor stable operation, energy-optimised management, short-duration power, improves the aspects such as the quality of power supply and plays vital effect.The integrated distributed electricity generation system of micro-capacitance sensor and the feature of load make micro-capacitance sensor break away from, and operation is uncertain, control difficult shortcoming, but micro-capacitance sensor development introduces some new problems, such as the economy optimization etc. that micro-capacitance sensor overall controls, the energy storage in microgrid, micro-capacitance sensor run.
In existing micro-capacitance sensor energy storage dispatching method, such as 201210588833.5 mainly according to major network voltage and major network frequency, it is judged that storage energy operation mode, if major network voltage and major network frequency are normal, employing is incorporated into the power networks；If major network voltage and major network frequency anomaly, off-network is used to run.But, in prior art, for major network and major network frequency anomaly, and use the micro-capacitance sensor that off-network runs, owing to the power-supply fluctuation of micro-capacitance sensor is relatively big, the power of its power possible and energy storage device cannot meet its load, but cannot obtain enough electric power by being incorporated into the power networks again, the use of subscriber equipment so can only can be affected by micro-capacitance sensor internal load being limited the measures such as such as cut-out equipment to realize the coupling of output and load.
Summary of the invention
As one aspect of the present invention, it is provided that a kind of micro-capacitance sensor energy storage dispatching method, described micro-capacitance sensor includes: distributed power source, energy storage device, ac bus, two-way inverter, load and microgrid energy management system；Described energy storage device includes super capacitor and accumulator, and it is connected on ac bus；Described distributed power source includes wind-force, photovoltaic or biomass energy power supply, and described distributed power source is connected on ac bus by inverter；Described accumulator is connected on ac bus by inverter；Described load is connected with ac bus；Described microgrid energy management system obtains micro-capacitance sensor internal loading and each power and capacity situation in real time, sends it to main network management system, and receives information and the instruction of main network management system；Described main network management system measures major network voltage and major network frequency in real time, determines multiple micro-grid connection or the off-network method of operation.
Preferably, in said method, when multiple micro-capacitance sensor are in the off-network method of operation, can mutually be powered between each micro-capacitance sensor.
Preferably, in said method, described main network management system measures major network voltage and major network frequency in real time, if major network voltage and major network frequency are normal, use for micro-capacitance sensor and is incorporated into the power networks；If major network voltage and major network frequency anomaly, off-network is used to run for micro-capacitance sensor.
Preferably, in said method, when off-network is run, described main network management system is monitored for the load of each micro-capacitance sensor received and distributed electrical source power thereof and energy storage device capacity；If the inside output of one of them micro-capacitance sensor is not enough to bear its load, described main network management system, according to the monitoring parameter of other micro-capacitance sensor, provides the instruction of corresponding micro-capacitance sensor so that it is the micro-capacitance sensor not enough to power is powered.
Preferably, in said method, described monitoring parameter includes other micro-capacitance sensor Real-time Loads and real-time distributed power and energy storage device capacity.
Preferably, in said method, described main network management system calculates the regulation and control parameter factors of other each micro-capacitance sensor according to following formula, λ=ε × (Po-B)/P, wherein Po is the real-time distributed power of this micro-capacitance sensor, B is the load of this micro-capacitance sensor, and ε is the energy storage device volume percent of this micro-capacitance sensor, and P is the power needed for the micro-capacitance sensor that power is not enough.
Preferably, in said method, regulation and control parameter factors λ of the described main network management system other each micro-capacitance sensor for calculating is ranked up, and selects the micro-capacitance sensor of the micro-capacitance sensor internally output deficiency that wherein λ is maximum and λ is more than 1 to be powered.
Preferably, in said method, if regulation and control parameter factors λ of other each micro-capacitance sensor is all not more than 1, described main network management system is from therefrom selecting multiple micro-capacitance sensor, being powered to the micro-capacitance sensor that described internal output is not enough together, the regulation and control parameter factors λ sum of the plurality of micro-capacitance sensor is more than 1.
Preferably, in said method, described monitoring parameter also includes other micro-capacitance sensor historical load and historical rethinking formula power.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the micro-capacitance sensor of the present invention.
Fig. 2 is the schematic diagram of multiple micro-capacitance sensor of the present invention.
Detailed description of the invention
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Seeing Fig. 1, the micro-capacitance sensor in the micro-capacitance sensor energy storage dispatching method of the present invention includes: distributed power source 10, energy storage device 20, ac bus 30, inverter 40, load 50 and microgrid energy management system 70.Distributed power source 10, as the energy source of micro-capacitance sensor, can include wind-force, photovoltaic or biomass energy power supply, and it can be connected to ac bus 30 by such as inverter, is charged to energy storage device 20 or powers directly to load 30.Energy storage device 20 is used for storing electric power, is connected to ac bus 30 by inverter 40, and powers to load 50 according to the instruction of micro-capacitance sensor management system, and it can include super capacitor and accumulator.Microgrid energy management system 70 obtains in micro-capacitance sensor internal loading 50 and distributed power source 10 capacity situation of equipment in each power and energy storage device 20 in real time, sends it to main network management system, and receives information and the instruction of main network management system.Main network management system measures major network voltage and major network frequency in real time, determines micro-grid connection or the off-network method of operation.
Seeing Fig. 2, the micro-capacitance sensor energy storage dispatching method of the present invention includes that multiple micro-capacitance sensor, main network management system measure major network voltage and major network frequency in real time, determines multiple micro-grid connection or the off-network method of operation.Main network management system measures major network voltage and major network frequency in real time, if major network voltage and major network frequency are normal, use for micro-capacitance sensor and is incorporated into the power networks；If major network voltage and major network frequency anomaly, off-network is used to run for micro-capacitance sensor.Mutually can be powered by major network circuit between each micro-capacitance sensor.Micro-capacitance sensor is when off-network is run, and main network management system is monitored for the load of each micro-capacitance sensor received and distributed electrical source power thereof and energy storage device capacity；If the inside output of one of them micro-capacitance sensor is not enough to bear its load, main network management system can be according to the monitoring parameter of other micro-capacitance sensor, monitoring parameter can include Real-time Load and real-time distributed power and energy storage device capacity, provide the instruction of corresponding micro-capacitance sensor so that it is the micro-capacitance sensor not enough to power is powered.Passing through technique scheme so that when off-network is run, micro-capacitance sensor, when internal power deficiency, can be powered by other micro-capacitance sensor, thus be controlled without need for internal load.
Preferably, in technical scheme, main network management system calculates the regulation and control parameter factors of other each micro-capacitance sensor according to following formula, λ=ε × (Po-B)/P, wherein Po is the real-time distributed power of this micro-capacitance sensor, B is the load of this micro-capacitance sensor, and ε is the percentage ratio of the energy storage device institute reserve of electricity of this micro-capacitance sensor, and P is the power needed for the micro-capacitance sensor that power is not enough.Regulation and control parameter factors λ of the main network management system other each micro-capacitance sensor for calculating is ranked up, and selects the micro-capacitance sensor of the micro-capacitance sensor internally output deficiency that wherein λ is maximum and λ is more than 1 to be powered.Further preferred, if regulation and control parameter factors λ of other each micro-capacitance sensor is all not more than 1, described main network management system therefrom selects multiple micro-capacitance sensor, is powered to the micro-capacitance sensor that described internal output is not enough together, and the regulation and control parameter factors λ sum of the plurality of micro-capacitance sensor is more than 1.
Preferably, owing to the load of micro-capacitance sensor different time is different, in order to avoid load causes other micro-capacitance sensor micro-capacitance sensor that internally output is not enough to power in different time variation, above-mentioned monitoring parameter can also include other micro-capacitance sensor historical load and historical rethinking formula power.
Above-described embodiment is only used for exemplary expression present disclosure.It addition, those skilled in the art also can do other change in spirit of the present invention, without departing from the technique effect of the present invention.These changes done according to present invention spirit, within all should being included in scope of the present invention.
Claims (2)
1. a micro-capacitance sensor energy storage dispatching method, described micro-capacitance sensor can obtain micro-capacitance sensor internal loading and each power and capacity situation in real time by microgrid energy management system, send it to main network management system, and receive information and the instruction of main network management system；It is characterized in that: if the inside output of one of them micro-capacitance sensor is not enough to bear its load, described main network management system is according to the monitoring parameter of other micro-capacitance sensor, calculate the regulation and control parameter factors of other each micro-capacitance sensor, λ=ε × (Po-B)/P, wherein Po is the real-time distributed power of this micro-capacitance sensor, B is the load of this micro-capacitance sensor, and ε is the energy storage device volume percent of this micro-capacitance sensor, and P is the power needed for the micro-capacitance sensor that power is not enough；If regulation and control parameter factors λ of other each micro-capacitance sensor is all not more than 1, described main network management system therefrom selects multiple micro-capacitance sensor, being powered to the micro-capacitance sensor that described internal output is not enough together, the regulation and control parameter factors λ sum of the plurality of micro-capacitance sensor is more than 1.
Micro-capacitance sensor dispatching method the most according to claim 1, it is characterised in that: described monitoring parameter also includes other micro-capacitance sensor historical load and historical rethinking formula power.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610510047.1A CN105896610B (en) | 2015-04-18 | 2015-04-18 | A kind of micro-capacitance sensor dispatching method |
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| CN201510183388.8A CN104779634B (en) | 2015-04-18 | 2015-04-18 | A kind of micro-capacitance sensor energy storage dispatching method |
| CN201610510047.1A CN105896610B (en) | 2015-04-18 | 2015-04-18 | A kind of micro-capacitance sensor dispatching method |
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| CN105896610B CN105896610B (en) | 2018-06-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110932325A (en) * | 2019-12-16 | 2020-03-27 | 南京晓庄学院 | Energy exploration explosion-proof micro-grid system and method based on CAB algorithm |
| CN112350367A (en) * | 2020-10-13 | 2021-02-09 | 芜湖泰伦特能源科技有限公司 | Control method for local power grid combined power supply constructed through micro-grid |
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| CN105932702A (en) * | 2015-10-23 | 2016-09-07 | 无锡美凯能源科技有限公司 | Parallel microgrid energy storage inversion apparatus |
| CN105576649B (en) * | 2015-12-28 | 2019-02-26 | 深圳市科陆电子科技股份有限公司 | Micro-capacitance sensor electricity consumption dispatching method and system |
| CN106385042B (en) * | 2016-10-09 | 2019-01-11 | 江苏现代能源微网***有限公司 | A kind of network type energy-storage system and its progress control method applied to micro-capacitance sensor |
| CN111162550B (en) * | 2019-12-18 | 2024-03-29 | 安徽尚特杰电力技术有限公司 | Micro-grid complementary power supply method through storage battery transition |
| CN111711214A (en) * | 2020-07-22 | 2020-09-25 | 兰州兰石恩力微电网有限公司 | Micro-grid dispatching monitoring system |
| CN112332448A (en) * | 2020-10-13 | 2021-02-05 | 芜湖泰伦特能源科技有限公司 | Local power grid system constructed in combination with microgrid and power supply control method |
| CN112366738B (en) * | 2020-11-03 | 2023-03-14 | 安徽奥里奥克科技股份有限公司 | Little electric wire netting power storage control system of guarantee elevator power supply |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104779634A (en) | 2015-07-15 |
| CN105896610B (en) | 2018-06-29 |
| CN104779634B (en) | 2016-09-28 |
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