CN107591831A - A kind of topology applied to family energy microgrid - Google Patents
A kind of topology applied to family energy microgrid Download PDFInfo
- Publication number
- CN107591831A CN107591831A CN201610528185.2A CN201610528185A CN107591831A CN 107591831 A CN107591831 A CN 107591831A CN 201610528185 A CN201610528185 A CN 201610528185A CN 107591831 A CN107591831 A CN 107591831A
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- China
- Prior art keywords
- energy
- microgrid
- module
- power
- storage battery
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
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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
- 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 discloses a kind of brand-new family energy microgrid topology, as shown in Figure of abstract, it includes microgrid control module, anti-reverse flow module, photovoltaic panel, photovoltaic inversion modules, energy storage inversion module, energy-storage battery, charger module, local load and low-voltage network.Photovoltaic panel connects ac bus by photovoltaic inversion modules, and energy-storage battery connects ac bus by energy storage inversion module, and charger connects ac bus and charged to energy storage electric system；Anti-backflow device detects ac bus side power flow direction and controls photovoltaic inversion modules and energy storage inversion module active power and reactive power to export by communication mode, forbids family energy microgrid excess energy to flow to low-voltage network, influences the power network quality of power supply；Microgrid control module is responsible for the function of controlling the charge and discharge control of energy-storage battery to realize peak load shifting.
Description
Technical field
The present invention is to belong to distributed energy microgrid field, is mainly concerned with a kind of opening up for brand-new family energy microgrid
Flutter structure.
Background technology
Based on micro-capacitance sensor refers to generation technology in a distributed manner, by decentralized resource small hydropower station based on, with reference to terminal
The small modular that custom power quality management and energy cascade utilization technology are formed, distributed functional network.Micro-capacitance sensor energy
The integration operation of internal electric source and load is realized, and is controlled by the coordination with main power network, can smoothly access major network or independence
Autonomy operation, fully meets user to the quality of power supply, the requirement of power supply reliability and security.
With the development of the social economy, people are increasing for the demand of electric power, supply of electric power contradiction is further prominent.Electricity
Power is a kind of specialty goods, it is difficult to which the cost of storage or storage is high, belongs to a kind of production, the commodity of immediate consumption immediately.In order to
The peak requirements in one day are dealt with, electric power supply plant must design production scale or power supply capacity by the demand in rush hour, and this is just
Beyond the waste of electric energy during low ebb, therefore, implement peak valley difference electricity price, can effectively play the leverage of electricity price, suppress
The rapid growth of peak time power consumption, power consumption when low ebb is improved, so as to improve the benefit of power network and entire society.
With the access in large-scale distributed power station, operation and protection control for power network bring a series of shadow
Ring, including power grid security problem, power quality problem, relay protection problem, short circuit current problem and the influence to Electric Power Network Planning
Deng, many influences brought based on distributed power station to power network, many country reduction or cancellation photovoltaic plant subsidies, very
To not allowing distributed power station to enter power network against power transmission.
Based under this background, the present invention proposes one kind can be with the family energy microgrid topology of peak load shifting, and can be with
Distributed power source is reduced to adversely affect power distribution network.
The content of the invention
The invention provides a kind of family energy microgrid topology.
It includes microgrid control module, anti-reverse flow module, photovoltaic panel, photovoltaic inversion modules, energy storage inversion module, energy storage electricity
Pond, charger module, local load and low-voltage network.Photovoltaic panel connects ac bus, energy storage electricity by photovoltaic inversion modules
Pond connects ac bus by energy storage inversion module, and charger connects ac bus and charged to energy storage electric system；Anti-backflow device
Detect ac bus side power flow direction and by communication mode control photovoltaic inversion modules and energy storage inversion module active power and
Reactive power exports, and forbids family energy microgrid excess energy to flow to low-voltage network, influences the power network quality of power supply；Microgrid control
Molding block is responsible for the function of controlling the charge and discharge control of energy-storage battery to realize peak load shifting.
Described energy storage inversion module is with simultaneously off-network function, switches itself and off-network by wired or wireless communication mode
Pattern.
Described microgrid control module closes K2 in the paddy electricity phase and opens K3 as energy-storage battery charging, and the peak electricity phase closes K3 openings
K2 discharges energy-storage battery electric energy；When microgrid control module detects low-voltage network power-off, K2 is closed, K1 is opened and is switched to off-network
Pattern.
Described anti-backflow device, low-voltage network point of incoming cables voltage, current phasor are detected by CT and VT in real time, calculated
Power flow direction, when the unnecessary power flow low-voltage network of energy microgrid is that anti-backflow device passes through wired or wireless communication mode
Photovoltaic inversion modules and the active and idle power output of energy storage inversion module are adjusted, or changes charge and discharge switch state in topology.
Described energy-storage battery can be lead-acid accumulator, lithium battery, fuel cell or ultracapacitor.
Energy-storage battery can store energy unnecessary in photovoltaic generating system in the present invention, because distributed energy is to distribution
Net side brings some adverse effects, and many country's limitation distributed energies can enter in power network against power transmission, and so, energy-storage system can be with
Energy unnecessary in photovoltaic generating system on daytime is stored, avoids energy dissipation, improves energy utilization rate.
Energy-storage battery can not only store energy unnecessary in photovoltaic generating system in the present invention, can also be inhaled in paddy electricity
Receive the unnecessary energy of distribution net side, not only can low price storage energy, energy unnecessary in power network, avoids paddy electricity when consuming paddy electricity
Shi Nengliang loss；But also mass energy demand when supporting peak electricity, it can be saved for user with to be released energy during peak electricity to power network
Bill, the present invention can both solve many adverse effects that distributed power station is brought to distribution net side, and can also realize that peak clipping was filled out
The function of paddy, meet national time-of-use tariffs policy, and have extended cycle life, control effect is good, and cost is relatively low, and income is higher.
Brief description of the drawings
Fig. 1 is that a kind of topology applied to family energy microgrid implements illustration.
Fig. 2 is a kind of topological peak-trough electricity timetable applied to family energy microgrid.
Embodiment
In order to more specifically describe the present invention, below in conjunction with the accompanying drawings 1 and embodiment to the present invention technical side
Case and its related work principle are described in detail
As shown in figure 1, a kind of family microgrid topology, including photovoltaic panel and its 4KW photovoltaic inversion modules, energy-storage battery and its
5KW energy storage inversion module, 2KW charging modules, 2KW are locally loaded, anti-reverse flow module, microgrid control module and low-voltage network.
In present embodiment, current photovoltaic output inversion module power exports for 4KW full powers, and local load is 2kW, i.e.,
2KW power outputs be present and flow to low-voltage network, microgrid control module, which is opened, fills point module switch K3 for energy-storage battery charging, keeps away
Exempt from the unnecessary power flow power network of energy microgrid；Exported when photovoltaic exports inversion module power for 4KW full powers, it is local to load 1KW
When, microgrid control module, which is opened, fills point module switch K3 for energy-storage battery charging, while anti-reverse flow module regulation photovoltaic inversion mould
Block power output avoids the unnecessary power flow power network of energy microgrid, causes the quality of power supply to influence low-voltage distribution to 3KW.
In present embodiment, as shown in Fig. 2 daily 22:00~6:00, microgrid control module closure K3 is energy-storage battery
Charging, absorb paddy electricity phase low-voltage network excess energy；Daily 6:00~22:00, micro-capacitance sensor closure K2, discharge energy-storage battery
Energy, support low-voltage network peak electricity phase electrical problem.
In present embodiment, when microgrid control module detects low-voltage network power-off, microgrid control module is broken in real time
K2 is opened, closure K1 is switched to off-network pattern, and it is the inconvenience that user brings to avoid grid power blackout.
Claims (7)
1. a kind of family energy microgrid topology, as shown in figure, including microgrid control module, anti-reverse flow module, photovoltaic panel, light
Lie prostrate inversion module, energy storage inversion module, energy-storage battery, charger module, local load and low-voltage network.
2. the family energy microgrid topology according to claim 1, it is characterised in that described energy storage inversion module is
With simultaneously off-network function, simultaneously off-network pattern is switched by wired or wireless communication mode.
3. the family energy microgrid topology according to claim 1, it is characterised in that described microgrid control module exists
The paddy electricity phase closes K2 and opens K3 as energy-storage battery charging, and the peak electricity phase closes K3 and opens K2 release energy-storage battery electric energy.
4. microgrid control module according to claim 3, it is characterised in that when microgrid control module detects low-voltage distribution
During net power-off, K2 is closed, K1 is opened and is switched to off-network pattern.
5. the family energy microgrid topology according to claim 1, it is characterised in that described anti-backflow device, pass through
CT and VT detects low-voltage network point of incoming cables voltage, current phasor in real time, power flow direction is calculated, when the unnecessary electric energy stream of energy microgrid
It is that anti-backflow device adjusts photovoltaic inversion modules and energy storage inversion module by wired or wireless communication mode to low-voltage network
Active and idle power output, or change charge and discharge switch state in topology.
6. CT and VT according to claim 5, it is characterised in that described CT and VT is connected on low-voltage network point of incoming cables.
7. the family energy microgrid topology according to claim 1, it is characterised in that described energy-storage battery can be
Lead-acid accumulator, lithium battery, fuel cell or ultracapacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610528185.2A CN107591831A (en) | 2016-07-07 | 2016-07-07 | A kind of topology applied to family energy microgrid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610528185.2A CN107591831A (en) | 2016-07-07 | 2016-07-07 | A kind of topology applied to family energy microgrid |
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| CN107591831A true CN107591831A (en) | 2018-01-16 |
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| CN201610528185.2A Pending CN107591831A (en) | 2016-07-07 | 2016-07-07 | A kind of topology applied to family energy microgrid |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109586344A (en) * | 2019-01-26 | 2019-04-05 | 华北电力大学 | Photovoltaic user's method for managing power supply based on VSG and distributing microgrid structure |
| CN109802432A (en) * | 2019-01-04 | 2019-05-24 | 浙江联盛合众新能源有限公司 | A kind of anti-reverse flow control device of photovoltaic plant and its control method |
| CN110224432A (en) * | 2019-06-13 | 2019-09-10 | 乐山一拉得电网自动化有限公司 | A kind of box-type substation and its microgrid system control method |
| CN111509763A (en) * | 2019-01-31 | 2020-08-07 | 中国电力科学研究院有限公司 | Intelligent distribution board and control method thereof |
| CN113300406A (en) * | 2021-06-28 | 2021-08-24 | 上海电机学院 | Unidirectional distributed grid-connected photovoltaic power generation system and control method thereof |
| CN116896114A (en) * | 2023-09-11 | 2023-10-17 | 深圳市首航新能源股份有限公司 | Control method based on grid-connected system and grid-connected system |
-
2016
- 2016-07-07 CN CN201610528185.2A patent/CN107591831A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109802432A (en) * | 2019-01-04 | 2019-05-24 | 浙江联盛合众新能源有限公司 | A kind of anti-reverse flow control device of photovoltaic plant and its control method |
| CN109586344A (en) * | 2019-01-26 | 2019-04-05 | 华北电力大学 | Photovoltaic user's method for managing power supply based on VSG and distributing microgrid structure |
| CN111509763A (en) * | 2019-01-31 | 2020-08-07 | 中国电力科学研究院有限公司 | Intelligent distribution board and control method thereof |
| CN110224432A (en) * | 2019-06-13 | 2019-09-10 | 乐山一拉得电网自动化有限公司 | A kind of box-type substation and its microgrid system control method |
| CN113300406A (en) * | 2021-06-28 | 2021-08-24 | 上海电机学院 | Unidirectional distributed grid-connected photovoltaic power generation system and control method thereof |
| CN116896114A (en) * | 2023-09-11 | 2023-10-17 | 深圳市首航新能源股份有限公司 | Control method based on grid-connected system and grid-connected system |
| CN116896114B (en) * | 2023-09-11 | 2024-02-06 | 深圳市首航新能源股份有限公司 | Control method based on grid-connected system and grid-connected system |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180116 |
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| WD01 | Invention patent application deemed withdrawn after publication |