CN109449976A - Intelligent micro-grid based on adaptive technique and off-network switching system - Google Patents
Intelligent micro-grid based on adaptive technique and off-network switching system Download PDFInfo
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- CN109449976A CN109449976A CN201811393770.1A CN201811393770A CN109449976A CN 109449976 A CN109449976 A CN 109449976A CN 201811393770 A CN201811393770 A CN 201811393770A CN 109449976 A CN109449976 A CN 109449976A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000003044 adaptive effect Effects 0.000 title claims abstract description 13
- 238000004146 energy storage Methods 0.000 claims abstract description 26
- 230000005611 electricity Effects 0.000 claims description 20
- 230000007812 deficiency Effects 0.000 claims description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of intelligent micro-grid based on adaptive technique and off-network switching systems, including grid-connected bus, off-network bus, double incision passes, distributed generation resource, energy storage device and load；Double the first contacts closed of cutting connect grid-connected bus, and double the second contacts closed of cutting connect off-network bus, double to cut connector connection distributed generation resource, energy storage device or the load closed；Grid-connected bus connects bulk power grid.Of the invention and off-network switching system closes the function of realizing distributed generation resource, energy storage device and the independent switching of load and off-network state using grid-connected bus, off-network bus and multiple double cut, micro-capacitance sensor unit of operation can adjust the power supply of distributed generation resource, bulk power grid electric power and energy storage device actively or using control centre, the flexibility of micro-capacitance sensor is significantly increased, ensure that the stability and safety of micro-grid system.
Description
Technical field
The present invention relates to field of electrical equipment more particularly to a kind of intelligent micro-grid based on adaptive technique and off-networks
Switching system.
Background technique
Micro-capacitance sensor refers to by groups such as distributed generation resource, energy storage device, energy conversion device, load, monitoring and protective devices
At small-sized electric system.Micro-capacitance sensor is that by self-contr ol, protection and the autonomous system of management, both may be implemented
It is incorporated into the power networks and can off-grid operation.
Micro-capacitance sensor use at present and off-grid switching mode is that grid-connected switch is arranged between microgrid and bulk power grid
(PCC).This switching mode the problem is that bound completely between the equipment such as distributed generation resource, load all in microgrid,
Jointly from switching between grid-connected, equipment can not individually control it from grid connection state, and system lacks necessary flexibility.Such as
When needing power grid to power there are more important load in micro-capacitance sensor, if micro-capacitance sensor need to switch off-network state, the more important load
It will be disengaged from power grid supply district, equipment fault easily caused serious life and property loss even occur.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of novel and off-network switching systems, so that in micro-capacitance sensor
Each equipment has the function of independent and off-network, improves the flexibility of micro-capacitance sensor.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows: a kind of intelligence based on adaptive technique is micro-
Power grid and off-network switching system, including grid-connected bus, off-network bus, double incision passes, distributed generation resource, energy storage device and load；
Double the first contacts closed of cutting connect grid-connected bus, and double the second contacts closed of cutting connect off-network bus, double incisions
Connector connection distributed generation resource, energy storage device or the load of pass；
Grid-connected bus connects bulk power grid.
For intelligent micro-grid of the invention simultaneously in off-network switching system, distributed generation resource, energy storage device and the quantity of load can
Think multiple, each distributed generation resource, energy storage device and the double connectors for cutting pass of load independent connection one；It is cut when double
When switching to the first contact, equipment accesses bulk power grid by grid-connected bus, into grid connection state；Switching is cut when double
When to the second contact, equipment connection off-network bus enters off-network state.
It further, further include control centre, generated output and load of the control centre according to distributed generation resource
Double cut of electric power control is closed, and the suitable distributed generation resource of control centre's distribution enters off-network state and provides electric power for load,
And extra distributed generation resource is switched to grid connection state.
Further, intelligent micro-grid and off-network switching system further include grid-connected switch, and grid-connected bus passes through grid-connected switch
Access bulk power grid, the on-off between the grid-connected bus of grid-connected switch control and bulk power grid.
The utility model has the advantages that (1) is of the invention and off-network switching system utilizes grid-connected bus, off-network bus and multiple double incisions
Close the function of realizing distributed generation resource, energy storage device and the independent switching of load and off-network state, micro-capacitance sensor unit of operation can be with
The power supply for actively or using control centre adjusting distributed generation resource, bulk power grid electric power and energy storage device, greatly increases
The flexibility of micro-capacitance sensor, ensure that the stability and safety of micro-grid system.(2) of the invention and off-network switching system
Enable micro-capacitance sensor each according to parameters, comprehensive selections such as the power generation situation of itself, energy storage situation, electricity consumption situation and electricity prices
The suitable simultaneously off-network state of equipment, realizes the optimal economic operation of micro-capacitance sensor.
Detailed description of the invention
Fig. 1 is the application state figure one of embodiment 1 and off-network switching system.
Fig. 2 be the application state figure of embodiment 1 and off-network switching system secondly.
Fig. 3 be the application state figure of embodiment 1 and off-network switching system thirdly.
Specific embodiment
Invention is further described in detail With reference to embodiment.
Embodiment 1
As shown in Figure 1, the present embodiment and off-network switching system, including grid-connected bus, off-network bus, six double cut
Pass, grid-connected switch and control centre；
Double the first contacts closed of cutting connect grid-connected bus, and double the second contacts closed of cutting connect off-network bus, double incisions
Different equipment, connector can switch between the first contact and the second contact in the connector connection micro-capacitance sensor of pass；Six
It is negative that double connectors for cutting pass are separately connected No.1 distributed generation resource, No. two distributed generation resources, energy storage device, charging pile, No.1
It carries and No. two loads；
The control centre closes according to the generated output of distributed generation resource and double cut of electric power control of load, control
The suitable distributed generation resource of center distribution processed enters off-network state and provides electric power for load, and extra distributed generation resource is cut
It is changed to grid connection state；
Grid-connected bus accesses bulk power grid by grid-connected switch.
Control centre monitors the power of No.1 distributed generation resource in micro-capacitance sensor, the power of No. two distributed generation resources, energy storage dress
Power, the power of No.1 load and the power of No. two loads of the storing electricity, charging pile set；Control centre controls each
It is double to cut close and off-network state；Fig. 1 and Fig. 3 corresponds to four kinds common of micro-capacitance sensor and off-network state, illustrates one by one below.
State one: the generated output of No.1 distributed generation resource and No. two distributed generation resources be all larger than No.1 load, No. two it is negative
The electric power with charging pile is carried, and energy storage device charging finishes；At this point, all electrical equipments are switched into off-network state, it will
No.1 distributed generation resource and No. two distributed generation resources switch to grid connection state, specific as shown in Figure 1；No.1 distributed generation resource and
The electric power of No. two distributed generation resources is returned to bulk power grid.
State two: energy storage device deficiency is to provide electric power for No.1 load, No. two loads and the charging pile in micro-capacitance sensor；
At this point, No. two distributed generation resources are switched into off-network state, it is specific as shown in Figure 2；If the electricity that No. two distributed generation resources provide
Power is insufficient, then needs that No.1 distributed generation resource is further switched to off-network state.
State three: in the bulk power grid electricity price paddy period, bulk power grid electricity price is lower than No.1 distributed generation resource electricity price, and is higher than two
Number distributed generation resource electricity price；At this point, No. two distributed generation resources are switched to off-network state, No.1 distributed generation resource is switched to
Grid connection state, specifically as shown in Fig. 2, the electric power of No.1 distributed generation resource is returned to bulk power grid.
State four: in the bulk power grid electricity price peak period, bulk power grid electricity price is higher than No.1 distributed generation resource electricity price, No.1 distribution
Formula power supply electricity price is higher than No. two distributed generation resource electricity prices；At this point, No. two distributed generation resources are switched to off-network state, by No.1
Distributed generation resource switches to grid connection state；This switching needs the synchronous power supply capacity for considering two distributed generation resources, if two
The generated output of number distributed generation resource is insufficient for the power demand of micro-capacitance sensor, then needs No.1 distributed generation resource and two
Number distributed generation resource switches to off-network state as shown in Figure 3.
Although embodiments of the present invention are illustrated in specification, these embodiments are intended only as prompting,
It should not limit protection scope of the present invention.It is equal that various omission, substitution, and alteration are carried out without departing from the spirit and scope of the present invention
It should be included within the scope of the present invention.
Claims (8)
1. a kind of intelligent micro-grid based on adaptive technique and off-network switching system, it is characterised in that: including grid-connected bus, from
Net bus, double incision passes, distributed generation resource, energy storage device and load；
Double the first contacts for cutting pass connect grid-connected bus, and double the second contacts closed of cutting connect off-network bus, what double incisions were closed
Connector connects distributed generation resource, energy storage device or load；
Grid-connected bus connects bulk power grid.
2. the intelligent micro-grid according to claim 1 based on adaptive technique and off-network switching system, it is characterised in that:
It further include control centre, the control centre cuts according to the generated output of distributed generation resource and the electric power control pair of load
It closes, it is to load to provide electric power that control centre, which distributes suitable distributed generation resource to enter off-network state, and by extra distributed electrical
Source is switched to grid connection state.
3. the intelligent micro-grid according to claim 2 based on adaptive technique and off-network switching system, it is characterised in that:
It further include grid-connected switch, grid-connected bus accesses bulk power grid by grid-connected switch.
4. the intelligent micro-grid according to claim 3 based on adaptive technique and off-network switching system, it is characterised in that:
Double quantity closed of cutting is six, and distributed generation resource quantity is two, energy storage device one, load include No.1 load,
No. two loads and charging pile, six double cut close be separately connected No.1 distributed generation resource, No. two distributed generation resources, energy storage device,
Charging pile, No.1 load and No. two loads；The distributed generation resource control mode of grid-connected bus bar side is P/Q control model, and off-network is female
The distributed generation resource control mode of line side is V/F control model.
5. the intelligent micro-grid according to claim 4 based on adaptive technique and off-network switching system, it is characterised in that:
When the generated output of No.1 distributed generation resource and No. two distributed generation resources be all larger than No.1 load, No. two load and charging pile use
Electrical power, and energy storage device charges when finishing, the No.1 distributed generation resource and No. two distributed generation resources switch to grid connection state,
Energy storage device, charging pile, No.1 load and No. two loads switch to off-network state.
6. the intelligent micro-grid according to claim 4 based on adaptive technique and off-network switching system, it is characterised in that:
When energy storage device deficiency is to provide electric power for No.1 load, No. two loads and the charging pile in micro-capacitance sensor, No.1 distributed electrical
Source switches to grid connection state, and No. two distributed generation resources, energy storage device, charging pile, No.1 load and No. two loads switch to off-network
State.
7. the intelligent micro-grid according to claim 4 based on adaptive technique and off-network switching system, it is characterised in that:
When bulk power grid electricity price is lower than No.1 distributed generation resource electricity price, and is higher than No. two distributed generation resource electricity prices, No.1 distributed generation resource
Grid connection state is switched to, No. two distributed generation resources, energy storage device, charging pile, No.1 load and No. two loads switch to off-network shape
State.
8. the intelligent micro-grid according to claim 4 based on adaptive technique and off-network switching system, it is characterised in that:
When bulk power grid electricity price is higher than No.1 distributed generation resource electricity price, No.1 distributed generation resource electricity price is higher than No. two distributed generation resource electricity prices
When, No.1 distributed generation resource switches to grid connection state, No. two distributed generation resources, energy storage device, charging pile, No.1 load and No. two
Load switches to off-network state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811393770.1A CN109449976A (en) | 2018-11-21 | 2018-11-21 | Intelligent micro-grid based on adaptive technique and off-network switching system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811393770.1A CN109449976A (en) | 2018-11-21 | 2018-11-21 | Intelligent micro-grid based on adaptive technique and off-network switching system |
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| CN109449976A true CN109449976A (en) | 2019-03-08 |
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| CN201811393770.1A Pending CN109449976A (en) | 2018-11-21 | 2018-11-21 | Intelligent micro-grid based on adaptive technique and off-network switching system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361328A (en) * | 2011-10-25 | 2012-02-22 | 中国科学技术大学 | Wind and light complement distributed micro-grid system for comprehensively utilizing commercial power |
| WO2013040837A1 (en) * | 2011-09-25 | 2013-03-28 | 国网电力科学研究院 | Computer monitoring method for microgrid system |
| CN103236712A (en) * | 2013-04-08 | 2013-08-07 | 嘉兴清源电气科技有限公司 | Direct-current micro-grid system and control method thereof |
| CN105449717A (en) * | 2016-01-11 | 2016-03-30 | 上海紫竹新兴产业技术研究院 | Contrast-type solar power supply equipment |
| CN205489679U (en) * | 2016-03-17 | 2016-08-17 | 北京中电飞华通信股份有限公司 | Family is with little grid system based on energy management of family |
| CN207053198U (en) * | 2017-08-08 | 2018-02-27 | 神华集团有限责任公司 | Photovoltaic microgrid system |
| CN209046273U (en) * | 2018-11-21 | 2019-06-28 | 中国电建集团江西省电力建设有限公司 | Intelligent micro-grid based on adaptive technique and off-network switching system |
-
2018
- 2018-11-21 CN CN201811393770.1A patent/CN109449976A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013040837A1 (en) * | 2011-09-25 | 2013-03-28 | 国网电力科学研究院 | Computer monitoring method for microgrid system |
| CN102361328A (en) * | 2011-10-25 | 2012-02-22 | 中国科学技术大学 | Wind and light complement distributed micro-grid system for comprehensively utilizing commercial power |
| CN103236712A (en) * | 2013-04-08 | 2013-08-07 | 嘉兴清源电气科技有限公司 | Direct-current micro-grid system and control method thereof |
| CN105449717A (en) * | 2016-01-11 | 2016-03-30 | 上海紫竹新兴产业技术研究院 | Contrast-type solar power supply equipment |
| CN205489679U (en) * | 2016-03-17 | 2016-08-17 | 北京中电飞华通信股份有限公司 | Family is with little grid system based on energy management of family |
| CN207053198U (en) * | 2017-08-08 | 2018-02-27 | 神华集团有限责任公司 | Photovoltaic microgrid system |
| CN209046273U (en) * | 2018-11-21 | 2019-06-28 | 中国电建集团江西省电力建设有限公司 | Intelligent micro-grid based on adaptive technique and off-network switching system |
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