CN105186917A - Control method of bidirectional converter in intelligent community micro-grid - Google Patents
Control method of bidirectional converter in intelligent community micro-grid Download PDFInfo
- Publication number
- CN105186917A CN105186917A CN201510554098.XA CN201510554098A CN105186917A CN 105186917 A CN105186917 A CN 105186917A CN 201510554098 A CN201510554098 A CN 201510554098A CN 105186917 A CN105186917 A CN 105186917A
- Authority
- CN
- China
- Prior art keywords
- control method
- intelligent community
- current
- micro
- inner loop
- 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
Abstract
The invention discloses a control method of a bidirectional converter in an intelligent community micro-grid. According to the control method, voltage and current double loop feedback is adopted; inductor-current feedback control is taken as an inner loop; and output voltage instantaneous value feedback is taken as an outer loop. According to the control method, the dynamic property of the system is improved; the output voltage waveform is improved; and the power supply quality and the economic benefits in an intentional islanding operation mode are improved.
Description
Technical field
The present invention relates to the control method of two way convertor in the micro-capacitance sensor of a kind of Intelligent Community, particularly relate to the control method of two way convertor under planned islet operation pattern in the micro-capacitance sensor of a kind of Intelligent Community.
Background technology
While achieving great achievement along with economic construction and production, China has also paid the huge energy and environmental cost.Propose to realize for 2010 that energy consumption per unit reduces by 20% continue Eleventh Five-Year Plan, after total emissions of major pollutants reduces by the binding indicator of 10%, Chinese Government in 2009 again proposes the GDP CO2 emission of the year two thousand twenty unit and declined 40% ~ 45% than 2005, and emission reduction targets is included in the medium-term and long-term plans of national economy and social development as the binding indicator.China's energy-saving and emission-reduction work faces that the situation is tense, and on the one hand, the upgrading of residents consumption pattern and the proportion of electrified durable consumer goods improve, the raising of domestic energy consumption degree; On the other hand, the industry development level of the China also Chinese energy high flow rate development model of boosting.
Along with the adjustment of national energy development strategy and the requirement of development low-carbon economy, China is just accelerating the construction of resource-conserving and environment-friendly society, and electric energy is with a very important position what promote in energy efficiency.Intelligent Community micro-grid system defines the desirable Intelligent Community low-carbon energy system of circulation electricity consumption, environmental protection electricity consumption, and be development low-carbon economy, improving quality of residents'life provides strong science and technology support.Intelligent Community micro-grid system is different from conventional power distribution network, wherein access a large amount of distributed power source (photovoltaic generating system, wind generator system, fuel cell generation etc.), need battery energy storage system to be installed to realize storage and the release of electric energy, battery energy storage system becomes to be supported microgrid autonomous operation and as the indispensable important component part of controllable networking operation, mainly plays the effect that when stabilizing system disturbance, maintain the equilibrium of supply and demand and support islet operation, voltage/frequency is stable.Two way convertor is comprised in battery energy storage system, its major function and effect realize the Two-way energy transfer between AC network electric energy and energy-storage battery electric energy, can adaptive multiple DC energy storage unit, as bank of super capacitors, batteries, flying wheel battery etc., it not only fast and effeciently can realize the fluctuation of stabilizing the random electric energy of distributed generation system or trend, improve electrical network to extensive renewable energy power generation (wind energy, photovoltaic) receiving ability, and can dispatch command be accepted, receive or the peak valley electric energy of supplementary electrical network, and reactive power is provided, to improve power supply quality and the economic benefit of electrical network.
Intelligent Community micro-grid system has grid-connected and isolated island two kinds of patterns, under normal operation, powered by main power supply system and the common peripherad load of distributed power source, and when the main distribution system failure or maintenance, after associated switchgear disconnects, power to load by distributed power source is independent.After main distribution system disconnects, distributed power source forms a little island network together with local load, is called isolated island (Island).Under decoupled mode, require that the capacity of generators and loads in isolated island must be balance, if power (meritorious and idle) is uneven, the voltage in isolated island and frequency cannot remain stable, so also just cannot continuous service.From operational mode, isolated island is divided into planned and unplanned property isolated island.In order to maintain the stable operation of islanded system, should according to the size of distributed power source capacity and local load, determine rational isolated island region in advance, after isolating with main system, do not need large adjustment just can keep the balance of isolated island internal power and the stable of electric voltage frequency.The isolated island region of this prior delimitation, is called planned isolated island (IntentionalIsland).In general, planned isolated island is that distributed power source is favourable supplementary to one of bulk power grid, can be used as a kind of emergency service means of responsible consumer.
For islet operation pattern planned in the micro-capacitance sensor of Intelligent Community, need to provide a kind of effective two way convertor control method, to realize the energy transferring between distributed power source and load, improve power supply quality and economic benefit.
Summary of the invention
The invention provides the control method of two way convertor in the micro-capacitance sensor of a kind of Intelligent Community, improve the dynamic property of system, improve output voltage waveforms, improve the power supply quality under planned islet operation pattern and economic benefit.
In order to achieve the above object, the invention provides the control method of two way convertor in the micro-capacitance sensor of a kind of Intelligent Community, this control method adopts electric current and voltage ring feedback, controls as inner ring, be fed back to outer shroud with output voltage instantaneous value using inductor current feedback.
The control method of two way convertor in the micro-capacitance sensor of Intelligent Community as claimed in claim 1, this control method comprises following steps:
Step S1, by output voltage compared with reference voltage signal, obtain error signal and export as current inner loop with reference to given after instantaneous value Voltage loop pi regulator;
Step S2, by filter inductance electric current and current inner loop with reference to compared with given, obtain error signal and export after current inner loop pi regulator;
Step S3, by the output of current inner loop pi regulator compared with triangular carrier, produce SPWM driving pulse;
Step S4, SPWM driving pulse drive two way convertor to export pure sine wave, for local load.
Invention increases the dynamic property of system, improve output voltage waveforms, improve the power supply quality under planned islet operation pattern and economic benefit.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention.
Embodiment
Illustrate preferred embodiment of the present invention according to Fig. 1 below.
As shown in Figure 1, the invention provides the control method of two way convertor in the micro-capacitance sensor of a kind of Intelligent Community, adopt the control method of classical electric current and voltage ring feedback, control as inner ring using inductor current feedback, be fed back to outer shroud with output voltage instantaneous value, this control method comprises following steps:
Step S1, by output voltage compared with reference voltage signal, obtain error signal and export as current inner loop with reference to given after instantaneous value Voltage loop pi regulator;
Step S2, by filter inductance electric current and current inner loop with reference to compared with given, obtain error signal and export after current inner loop pi regulator;
Step S3, by the output of current inner loop pi regulator compared with triangular carrier, produce SPWM(sinusoidal pulse width modulation, SinusoidalPulseWidthModulation) driving pulse;
Step S4, SPWM driving pulse drive two way convertor to export pure sine wave, for local load.
Current inner loop can improve the dynamic property of system, and instantaneous value Voltage loop can improve output voltage waveforms, improves the power supply quality under planned islet operation pattern and economic benefit.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (2)
1. the control method of two way convertor in the micro-capacitance sensor of Intelligent Community, is characterized in that, this control method adopts electric current and voltage ring feedback, controls as inner ring, be fed back to outer shroud with output voltage instantaneous value using inductor current feedback.
2. the control method of two way convertor in the micro-capacitance sensor of Intelligent Community as claimed in claim 1, it is characterized in that, this control method comprises following steps:
Step S1, by output voltage compared with reference voltage signal, obtain error signal and export as current inner loop with reference to given after instantaneous value Voltage loop pi regulator;
Step S2, by filter inductance electric current and current inner loop with reference to compared with given, obtain error signal and export after current inner loop pi regulator;
Step S3, by the output of current inner loop pi regulator compared with triangular carrier, produce SPWM driving pulse;
Step S4, SPWM driving pulse drive two way convertor to export pure sine wave, for local load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510554098.XA CN105186917A (en) | 2015-09-02 | 2015-09-02 | Control method of bidirectional converter in intelligent community micro-grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510554098.XA CN105186917A (en) | 2015-09-02 | 2015-09-02 | Control method of bidirectional converter in intelligent community micro-grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105186917A true CN105186917A (en) | 2015-12-23 |
Family
ID=54908813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510554098.XA Pending CN105186917A (en) | 2015-09-02 | 2015-09-02 | Control method of bidirectional converter in intelligent community micro-grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105186917A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007259682A (en) * | 2006-02-24 | 2007-10-04 | Nippon Telegr & Teleph Corp <Ntt> | Power supply system and control method thereof |
| CN101931238A (en) * | 2010-04-29 | 2010-12-29 | 浙江省电力试验研究院 | Master-slave strategy-based microgrid system coordination control method |
| CN102185341A (en) * | 2011-04-14 | 2011-09-14 | 天津大学 | Master-slave control strategy microgrid-based main power supply double-mode running control method |
| CN103762628A (en) * | 2013-12-31 | 2014-04-30 | 北京科诺伟业科技股份有限公司 | Method of controlling bidirectional converter to charge and discharge storage battery |
-
2015
- 2015-09-02 CN CN201510554098.XA patent/CN105186917A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007259682A (en) * | 2006-02-24 | 2007-10-04 | Nippon Telegr & Teleph Corp <Ntt> | Power supply system and control method thereof |
| CN101931238A (en) * | 2010-04-29 | 2010-12-29 | 浙江省电力试验研究院 | Master-slave strategy-based microgrid system coordination control method |
| CN102185341A (en) * | 2011-04-14 | 2011-09-14 | 天津大学 | Master-slave control strategy microgrid-based main power supply double-mode running control method |
| CN103762628A (en) * | 2013-12-31 | 2014-04-30 | 北京科诺伟业科技股份有限公司 | Method of controlling bidirectional converter to charge and discharge storage battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103448573B (en) | A kind of inter-act electrified railway HVDC tractive power supply system | |
| CN103001223B (en) | Off-grid type microgrid frequency adjusting method based on control of energy-storing current converter | |
| CN110601248B (en) | Multi-mode coordination control method of annular alternating current-direct current hybrid micro-grid system | |
| CN103956778A (en) | Micro-grid system and networking method based on phase angle droop control | |
| CN103825291B (en) | A kind of modularization three level energy storage devices from network control method | |
| CN103457514B (en) | Dual-mode solar photovoltaic power generation system | |
| CN203358382U (en) | Bidirectional-interaction electrified railway high-voltage direct-current traction power supply system based on new energy | |
| CN102931672A (en) | Power distribution type energy storage device and control system thereof | |
| Banerji et al. | Enhancing quality of power to sensitive loads with microgrid | |
| CN102074952A (en) | Independent micro-grid system | |
| CN102790400B (en) | Reactive negative sequence current mixed synergic control device and method for electrified railway | |
| CN107269454B (en) | Power generation with marine energy system suitable for offshore platform frequency conversion drive trepan | |
| CN103490448A (en) | Power generation energy storage device based on cascade H bridge and multiport DC converter | |
| CN105305430A (en) | Power quality promotion method of light storage power generation system based on hierarchical control | |
| CN103236713B (en) | Micro-grid network, method for controlling same and bidirectional converter for micro-grid | |
| Bade et al. | Analysis of railway traction power system using renewable energy: A review | |
| CN113013924A (en) | Traction power supply system connected with new energy power generation unit | |
| CN203406827U (en) | Dual-mode solar photovoltaic power generation device | |
| Phurailatpam et al. | Embracing microgrids: Applications for rural and urban india | |
| CN203574386U (en) | Multilevel multiport power generation and energy storage hybrid apparatus | |
| Wei et al. | Discussion on application of super capacitor energy storage system in microgrid | |
| CN105140947A (en) | Intelligent community micro power grid cell energy storage system | |
| CN207677451U (en) | A kind of piconet networking system suitable for high-power wind turbine consumption | |
| CN202121330U (en) | Wind power energy storage system | |
| CN106877411A (en) | A kind of alternating current-direct current mixing microgrid cooperative control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20151211 Address after: 200002 Nanjing East Road, Shanghai, No. 181, No. Applicant after: State Grid Shanghai Municipal Electric Power Company Applicant after: East China Electric Power Test & Research Institute Co., Ltd. Address before: 200002 Nanjing East Road, Shanghai, No. 181, No. Applicant before: State Grid Shanghai Municipal Electric Power Company |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |