CN202042910U - Renewable energy centralized power generation device - Google Patents
Renewable energy centralized power generation device Download PDFInfo
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- CN202042910U CN202042910U CN 201120169626 CN201120169626U CN202042910U CN 202042910 U CN202042910 U CN 202042910U CN 201120169626 CN201120169626 CN 201120169626 CN 201120169626 U CN201120169626 U CN 201120169626U CN 202042910 U CN202042910 U CN 202042910U
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- voltage bus
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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
- 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 utility model provides a renewable energy centralized power generation device comprising a main power supply, a plurality of auxiliary power supplies, an energy storage device and two direct-current (DC) voltage buses, wherein an alternating-current (AC) side of the main power supply (ZDY1) is connected with a power grid or an electrical load, a DC side of the main power supply (ZDY1) is connected with the first DC voltage bus (DCBus1) and the second DC voltage bus (DCBus2), the output of each auxiliary power supply (FDY1 to FDYn) is connected to the first DC voltage bus (DCBus1) and the second DC voltage bus (DCBus2), and an output terminal or an input terminal of the energy storage device (CNZZ1) is connected with the first DC voltage bus (DCBus1) and the second DC voltage bus (DCBus2). The renewable energy centralized power generation device can realize coordinated control on various distributed power supplies without the help of the electrical load, and then adjust output power energy, so as to meet the needs of the power grid or the electrical load.
Description
Technical field
The utility model relates to a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT), particularly relate to a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) that realizes the stable electric generation operation that multiple distributed power source is organically combined.
Background technology
The development in society and economy owing to the conventional disposable energy such as the required coal of traditional thermal power generation, oil are exhausted day by day, causes the status of renewable energy power generation technology in power industry to become increasingly conspicuous to the demand rapid growth of electric power.The renewable energy power generation that belongs to new forms of energy mainly comprises: contents such as wind power generation, solar energy (photovoltaic) generating, fuel cell power generation, (miniature) gas turbine power generation, biological energy source generating, geothermal power generation, tidal power generation, wave power generation.Because the recyclability of regenerative resource and the advantageous advantages such as the feature of environmental protection in the power generation process, scientific research institution both domestic and external and expert, scholar are being devoted to the further investigation of renewable energy power generation technology and popularization, application.
In existing acquired achievement in research, based on distributed power generation and microgrid technology.Distributed power generation is to be core with various renewable energy power generation devices, the formation capacity be kilowatt the small modules formula that do not wait to MW class and with the independent current source of environmental compatible, it is distributed power source, these distributed power sources are arranged near the user in the mode of disperseing, and then satisfy the economical operation of particular user requirements or support electrical network.Distributed power generation has delayed the required huge investment of power transmission network and power distribution network upgrading on the basis that does not change original distribution net work structure, also effectively improved the power supply reliability of big electrical network simultaneously, has improved power supply quality.Many adverse effects have also been brought to the operation and the control of power distribution network in aspects such as but the distributed power generation The Application of Technology distributes in trend, voltage is stable, harmonic content, short circuit current, relaying protection.Microgrid is meant in regional area and directly distributed power generation unit, electric power networks and terminal use is linked together, by effective coordination control, realize heat, electricity, cold alliance scheme, and then optimize and the raising efficiency of energy utilization, the online of promotion distributed power source, reduce the burden of big electrical network, improve the security reliability of electrical network.But in microgrid inside, because the instability of distributed power source output electric energy causes the power supply reliability of non-important load wherein to be protected.And the distribution region of some regenerative resource such as wind energy, tidal energy, wave energy is often far away excessively apart with power load, so the range of application of microgrid will inevitably be restricted.
Summary of the invention
It is a kind of under the prerequisite that need not by means of power load that the purpose of this utility model is to provide, just can realize coordinating between each distributed power source control, and then to output electric energy regulate, satisfy the centralized Blast Furnace Top Gas Recovery Turbine Unit (TRT) of regenerative resource of the demand of electrical network or power load.
The purpose of this utility model is achieved in that
Comprise main power source, a plurality of accessory power supply, energy storage device and two direct current voltage bus, the AC side of main power source ZDY1 is connected with electrical network or power load, and the DC side of main power source ZDY1 is connected with the first direct current voltage bus DCBus1, the second direct current voltage bus DCBus2; Each accessory power supply FDY1 ... the output of FDYn all is connected to the first direct current voltage bus DCBus1, the second direct current voltage bus DCBus2; The output of energy storage device CNZZ1 or input are connected with the first direct current voltage bus DCBus1, the second direct current voltage bus DCBus2.
Described main power source ZDY1 inside must include DC-AC translation circuit DC/AC1 and double-fed generator DFG1, the DC side of DC-AC translation circuit DC/AC1 is connected with the first direct current voltage bus DCBus1, the second direct current voltage bus DCBus2, and the AC side of DC-AC translation circuit DC/AC1 is connected with the excitation winding of double-fed generator DFG1; The armature winding of double-fed generator DFG1 is connected with electrical network or power load.
When the centralized Blast Furnace Top Gas Recovery Turbine Unit (TRT) of the regenerative resource that the utility model proposes is normally moved, accessory power supply FDY1 ... FDYn and main power source ZDY1 are operated in generating state, are electric energy with various renewable energy conversion.All accessory power supply FDY1 ... the electric energy of FDYn output all collects on direct current voltage bus DCBus1, the DCBus2, and this part electric energy is through the conversion of DC-AC translation circuit DC/AC1, the excitation winding that enters double-fed generator DFG1.The electric energy that main power source ZDY1 self transforms and all accessory power supply FDY1 ... the electric energy of FDYn output enters electrical network or supplies with power load through the armature winding of double-fed generator DFG1 jointly.Electric energy and all accessory power supply FDY1 when main power source ZDY1 self conversion ... the electric energy total amount of FDYn output is during greater than the actual demand of electrical network or power load, energy storage device CNZZ1 is in charged state, absorb unnecessary electric energy, guarantee that direct current voltage bus DCBus1, DCBus2 voltage are stable; Otherwise energy storage device CNZZ1 is in discharge condition, and energy compensating is provided, and guarantees that the electric energy of the armature winding output of double-fed generator DFG1 satisfies actual need for electricity.
Compare with microgrid with existing distributed generating, the application of the centralized Blast Furnace Top Gas Recovery Turbine Unit (TRT) of regenerative resource that the utility model proposes is desirable must following beneficial effect:
(1) with distributed power generation in each distributed power source compare independently of one another, the centralized Blast Furnace Top Gas Recovery Turbine Unit (TRT) of regenerative resource is by means of the double-fed generator in the main power source, realized the unification in structure and control between main power source, accessory power supply and the energy storage device; And compare with microgrid, the inside of the centralized Blast Furnace Top Gas Recovery Turbine Unit (TRT) of regenerative resource need not any power load in constituting, so its controlling object is few, and control strategy is simple relatively, applied range (not being subjected to the restriction of power load), easier realization.
(2) utilize the characteristics of double-fed generator energy two-way flow in the main power source, the application of energy storage device on the combined with DC bus, the centralized Blast Furnace Top Gas Recovery Turbine Unit (TRT) of regenerative resource can be controlled and regulate the electric energy that offers electrical network.
(3) from the angle of electrical network, the centralized Blast Furnace Top Gas Recovery Turbine Unit (TRT) equivalence of regenerative resource is a double-fed generator, therefore helps calculating, the analysis of the problems such as trend distribution, relaying protection and short circuit current of electrical network.
(4) with microgrid and distributed power generation by means of power electronic device and grid connect mode different, the centralized Blast Furnace Top Gas Recovery Turbine Unit (TRT) of regenerative resource is being electrically connected by realization of the double-fed generator in the main power source and electrical network, by appropriate design to the double-fed generator parameter, can reduce the harmonic components and the content that inject electrical network effectively, improve power supply quality.And, therefore help to improve the fail safe and the reliability of electrical network owing to avoided contacting directly of power electronic device and electrical network.
The exciting voltage of excitation winding was lower when (5) double-fed generator in the main power source normally moved, therefore the electric pressure that is positioned at each accessory power supply on the excitation winding side direct current voltage bus and energy storage device is low, help accessory power supply and energy storage device simplified structure, improve safety and reliability, and reduce cost.
Description of drawings
The structured flowchart of the centralized Blast Furnace Top Gas Recovery Turbine Unit (TRT) of Fig. 1 regenerative resource.
Fig. 2 main power source ZDY1 internal structure block diagram.
Fig. 3 includes the structured flowchart of the centralized Blast Furnace Top Gas Recovery Turbine Unit (TRT) of regenerative resource of a plurality of main power sources.
Embodiment
For example the utility model is done more detailed description below in conjunction with accompanying drawing:
Execution mode one
In conjunction with Fig. 1 and Fig. 2.
Main power source ZDY1 adopts the renewable energy power generation device with double-fed generator structure, for example double-fed wind power generator Blast Furnace Top Gas Recovery Turbine Unit (TRT), double-fed hydroelectric generator Blast Furnace Top Gas Recovery Turbine Unit (TRT) etc.;
Double-fed generator DFG1 can adopt brush double-fed generator or brushless double feed generator;
DC-AC translation circuit DC/AC1 adopts the controlled three-phase half bridge circuit that is made of power electronic device such as IGBT, MOSFET, or other can realize that energy is at direct current and the translation circuit that exchanges the both sides two-way flow;
Accessory power supply FDY1 ... FDYn can adopt existing any one or multiple renewable energy power generation device, for example photovoltaic power generation apparatus, fuel cell, tidal power generating device etc., but the number of accessory power supply should be more than or equal to 1;
Energy storage device CNZZ1 can adopt formations such as batteries, capacitor group, bank of super capacitors or energy accumulation device for fly wheel;
Direct current voltage bus DCBus1, DCBus2 can adopt formations such as copper bar or cable.
Accessory power supply FDY1 ... FDYn and main power source ZDY1 are operated in generating state, accessory power supply FDY1 ... the electric energy of FDYn output all is pooled on direct current voltage bus DCBus1, the DCBus2, pass through the conversion of DC-AC translation circuit DC/AC1 again, enter the excitation winding of double-fed generator DFG1.The electric energy that main power source ZDY1 self transforms and all accessory power supply FDY1 ... the electric energy of FDYn output enters electrical network or supplies with power load through the armature winding of double-fed generator DFG1 jointly.Electric energy and all accessory power supply FDY1 when main power source ZDY1 self conversion ... the electric energy total amount of FDYn output is during greater than the actual demand of electrical network or power load, energy storage device CNZZ1 is in charged state, absorb unnecessary electric energy, guarantee that direct current voltage bus DCBus1, DCBus2 voltage are stable; Otherwise energy storage device CNZZ1 is in discharge condition, and energy compensating is provided, and guarantees that the electric energy of the armature winding output of double-fed generator DFG1 satisfies actual need for electricity.
Execution mode two:
In conjunction with Fig. 3.
Include a plurality of main power source ZDY1 in the centralized Blast Furnace Top Gas Recovery Turbine Unit (TRT) of regenerative resource ... ZDYn, the AC side of each main power source ZDY1 is connected with electrical network or power load, and the DC side of each main power source ZDY1 is connected with the first direct current voltage bus DCBus1, the second direct current voltage bus DCBus2.
Other are identical with execution mode one.
Claims (3)
1. centralized Blast Furnace Top Gas Recovery Turbine Unit (TRT) of regenerative resource, comprise main power source, a plurality of accessory power supply, energy storage device and two direct current voltage bus, it is characterized in that: the AC side of main power source (ZDY1) is connected with electrical network or power load, and the DC side of main power source (ZDY1) is connected with first direct current voltage bus (DCBus1), second direct current voltage bus (DCBus2); Each accessory power supply (FDY1 ... FDYn) output all is connected to first direct current voltage bus (DCBus1), second direct current voltage bus (DCBus2); The output of energy storage device (CNZZ1) or input are connected with first direct current voltage bus (DCBus1), second direct current voltage bus (DCBus2).
2. the centralized Blast Furnace Top Gas Recovery Turbine Unit (TRT) of regenerative resource according to claim 1, it is characterized in that: described main power source (ZDY1) inside must include DC-AC translation circuit (DC/AC1) and double-fed generator (DFG1), the DC side of DC-AC translation circuit (DC/AC1) is connected with first direct current voltage bus (DCBus1), second direct current voltage bus (DCBus2), and the AC side of DC-AC translation circuit (DC/AC1) is connected with the excitation winding of double-fed generator (DFG1); The armature winding of double-fed generator (DFG1) is connected with electrical network or power load.
3. the centralized Blast Furnace Top Gas Recovery Turbine Unit (TRT) of regenerative resource according to claim 1 and 2, it is characterized in that: include a plurality of main power source (ZDY1 ... ZDYn), the AC side of each main power source (ZDY1) is connected with electrical network or power load, and the DC side of each main power source (ZDY1) is connected with first direct current voltage bus (DCBus1), second direct current voltage bus (DCBus2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120169626 CN202042910U (en) | 2011-05-25 | 2011-05-25 | Renewable energy centralized power generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120169626 CN202042910U (en) | 2011-05-25 | 2011-05-25 | Renewable energy centralized power generation device |
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| CN202042910U true CN202042910U (en) | 2011-11-16 |
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| CN 201120169626 Expired - Fee Related CN202042910U (en) | 2011-05-25 | 2011-05-25 | Renewable energy centralized power generation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195298A (en) * | 2011-05-25 | 2011-09-21 | 哈尔滨工程大学 | Centralized generating set of renewable energy source |
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2011
- 2011-05-25 CN CN 201120169626 patent/CN202042910U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195298A (en) * | 2011-05-25 | 2011-09-21 | 哈尔滨工程大学 | Centralized generating set of renewable energy source |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20140525 |