CN107317351A - A kind of distributed generation system with circuit protection - Google Patents
A kind of distributed generation system with circuit protection Download PDFInfo
- Publication number
- CN107317351A CN107317351A CN201710267497.7A CN201710267497A CN107317351A CN 107317351 A CN107317351 A CN 107317351A CN 201710267497 A CN201710267497 A CN 201710267497A CN 107317351 A CN107317351 A CN 107317351A
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- CN
- China
- Prior art keywords
- inverter
- circuit
- protection
- generation system
- circuit protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005611 electricity Effects 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000010248 power generation Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H02J3/383—
-
- 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
Abstract
A kind of distributed generation system with circuit protection, the system includes：Photovoltaic array, inverter and power network; include dsp controller in the inverter; pass through the protection circuit in dsp controller; it can be realized using inverter safe and efficient grid-connected; the randomness and indirect that weapons produce electric energy to electricity generation system are controlled in time; the impact damage to power network is avoided, the defencive function of circuit is realized.
Description
Technical field
The present invention relates to field of photovoltaic power generation, more particularly to a kind of distributed generation system with circuit protection.
Background technology
Under global energy-saving and environmental protection, the main trend of sustainable development, wind-power electricity generation, photovoltaic generation distributed, which generate electricity, to be filled
Putting increasingly turns into the load growth demand that meets, reduces environmental pollution, improves the one of comprehensive utilization rate of energy source and power supply reliability
Plant effective way.Distributed power generation refers to power system being arranged near user with small-scale, distributed manner, can be independent
The system for exporting electric energy.Due to bulk power system can not flexible follow load change, Local Accidents easily expand and cause big
The power failure of area, this problem can effectively be solved by being generated electricity using distributed grid-connected.But distributed grid-connected generates electricity due to too
Electric energy produced by positive energy distributed generation system has randomness and indirect, and the impact to power network is very big.
Therefore, proposing that a kind of inverter carries out the distributed generation system that electric energy conversion is generated electricity by way of merging two or more grid systems, can be to generating electricity
The randomness and indirect that system produces electric energy are controlled in time, it is to avoid to the impact damage of power network.
The content of the invention
The present invention is that solar energy is directly translated into electric energy using the photovoltaic effect of interface, then electric energy is led to
Cross inverter carry out electric energy conversion realize it is grid-connected, in order to realize the stabilization of inverter and ensure system safety, in inverter
Circuit protection is carried out by DSP.
The embodiment of the present invention provides a kind of distributed generation system with circuit protection, including：Photovoltaic array, inverter and
Power network, photovoltaic generation is passed to inverter by the photovoltaic array of solar energy and is output to power network again.
Wherein：
The photovoltaic array, for photovoltaic generation, produces electric energy.
DPS circuit protection modules in the inverter include overload protection module, short circuit protection module, under-voltage protection again
Module, temperature protection module etc., wherein：
The overload protection module, protection is automatically powered off for load excessive.
The short circuit protection module, protection is automatically powered off for occurring short circuit.
The under-voltage protective module, when occurring being greatly lowered the phenomenon even disappeared in a short time for voltage, from
Dynamic circuit breaker electric protection.
The temperature protection module, when being more than setting safe temperature for sample temperature, automatically powers off protection.
Compared with prior art, the technical scheme of the embodiment of the present invention has the advantages that：
Solar energy is directly translated into electric energy using the photovoltaic effect of interface, afterwards entered electric energy by inverter
Row electric energy conversion realize it is grid-connected, in order to realize the stabilization of inverter and ensure system safety, carried out in inverter by DSP
Circuit protection.So that the electric energy produced by overcoming distributed solar electricity generation system has randomness and indirect, it is to avoid pair
The impact of power network.
Brief description of the drawings
Fig. 1 is a kind of structural representation of distributed generation system with circuit protection in the present invention.
Fig. 2 is the structural representation of the circuit protection structure of the inverter in the present invention.
Embodiment
In embodiments of the present invention, solar energy is directly translated into electric energy using the photovoltaic effect of interface,
Afterwards by electric energy by inverter carry out electric energy conversion realize it is grid-connected, in order to realize the stabilization of inverter and ensure system pacify
Entirely, circuit protection is carried out by DSP in inverter.To enable above-mentioned purpose, feature and the beneficial effect of the present invention more
Become apparent, the specific embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
The embodiments of the invention provide a kind of distributed generation system with circuit protection, reference picture 1, including：Photovoltaic battle array
Row 1, inverter 2 and power network 3, photovoltaic generation are passed to inverter by the photovoltaic array of solar energy and are output to power network again.
In specific implementation, the circuit protection structure of inverter 2 in inverter 2 as shown in Fig. 2 include dsp controller
4, including overload protection module 5, short circuit protection module 6, under-voltage protective module 7, temperature protection module 8 etc..The dsp controller
The electric current of 4 pairs of Photovoltaic arrays 1 carries out continual measurement and tracking.
Overload protection module 5 is according to 1.1 times of the load current value of Photovoltaic array 1 to set overload current value to protect
The Photovoltaic array 1 is protected, when the current values that the overload protection module 5 of the dsp controller 4 is detected reach the overload electricity
During flow valuve, then dsp controller is stopped, and suspends grid-connected.
Short circuit protection module 6 sets short-circuit current value according to 10 times of the load current value of Photovoltaic array 1, when described
When the current values that the short circuit protection module 6 of dsp controller 4 is detected reach the short-circuit current value, then dsp controller stops
Work, suspends grid-connected.
When the magnitude of voltage that under-voltage protective module 7 is detected is less than default under-voltage protection drop-away value, the dsp controller 4
Into dropout delay state, when reach delay limiting time and magnitude of voltage do not recover normal yet when, then dsp controller stops work
Make, suspend grid-connected.
Temperature protection module 8 can set a maximum temperature, when the temperature protection module 8 of the dsp controller 4 is detected
To temperature reach maximum temperature when, then dsp controller is stopped, suspend it is grid-connected.
As can be seen here, distributed solar can be overcome to generate electricity by the circuit protection of dsp controller 4 in inverter
Electric energy produced by system has randomness and indirect, it is to avoid impact to power network.Realize inverter stabilization and really
The safety of insurance system.
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, are not departing from this
In the spirit and scope of invention, it can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
The scope of restriction is defined.
Claims (2)
1. a kind of distributed generation system with circuit protection, it is characterised in that including：Photovoltaic array, inverter and power network, light
Volt, which generates electricity to be passed to inverter by the photovoltaic array of solar energy and be output to again in power network, the inverter, includes DSP controls
Device.
2. the distributed generation system as claimed in claim 1 with circuit protection, it is characterised in that the dsp controller bag
Include a kind of at least following protection circuit：Overload protecting circuit, short-circuit protection circuit, under-voltage protecting circuit and temperature protection electricity
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710267497.7A CN107317351A (en) | 2017-04-21 | 2017-04-21 | A kind of distributed generation system with circuit protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710267497.7A CN107317351A (en) | 2017-04-21 | 2017-04-21 | A kind of distributed generation system with circuit protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107317351A true CN107317351A (en) | 2017-11-03 |
Family
ID=60185546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710267497.7A Pending CN107317351A (en) | 2017-04-21 | 2017-04-21 | A kind of distributed generation system with circuit protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107317351A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157954A (en) * | 2011-02-25 | 2011-08-17 | 北京交通大学 | Photovoltaic inverter |
| CN202565190U (en) * | 2012-05-22 | 2012-11-28 | 惠州市华威能源科技有限公司 | Photovoltaic off-grid high frequency inverter |
| CN106059044A (en) * | 2016-07-20 | 2016-10-26 | 浙江悦昇新能源科技有限公司 | Off-grid photovoltaic integrated machine |
-
2017
- 2017-04-21 CN CN201710267497.7A patent/CN107317351A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157954A (en) * | 2011-02-25 | 2011-08-17 | 北京交通大学 | Photovoltaic inverter |
| CN202565190U (en) * | 2012-05-22 | 2012-11-28 | 惠州市华威能源科技有限公司 | Photovoltaic off-grid high frequency inverter |
| CN106059044A (en) * | 2016-07-20 | 2016-10-26 | 浙江悦昇新能源科技有限公司 | Off-grid photovoltaic integrated machine |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171103 |