CN103475032B - A kind of intelligent adapted electricity flexible control system - Google Patents
A kind of intelligent adapted electricity flexible control system Download PDFInfo
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- CN103475032B CN103475032B CN201310467166.XA CN201310467166A CN103475032B CN 103475032 B CN103475032 B CN 103475032B CN 201310467166 A CN201310467166 A CN 201310467166A CN 103475032 B CN103475032 B CN 103475032B
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- 230000005611 electricity Effects 0.000 title claims abstract description 33
- 239000003990 capacitor Substances 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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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
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Abstract
The invention discloses a kind of intelligent adapted electricity flexible control system, comprise transformer, three-phase rectifier, at least one single-phase inverter and at least one three-phase inverter.The three-phase alternating current that transformer produces is converted to direct current and exports to inverter by three-phase rectifier, direct current is converted to frequency and all adjustable single-phase alternating current of amplitude by single-phase inverter, and direct current is converted to frequency and all adjustable three-phase alternating current of amplitude by three-phase inverter.Intelligent adapted electricity flexible control system provided by the invention adopts the method to inversion after three-phase alternating current electric rectification, avoid a large amount of single-phase electric devices and directly access power supply grid and the three-phase imbalance problem caused, reduce the infringement to equipment for power transmission and distribution and power consumption equipment, improve the reliability of power supply, economy and the quality of power supply.And the intelligent adapted electricity flexible control system module provided by the invention division of labor is clear and definite, is easy to design, builds, operation and maintenance, facilitates System Expansion to upgrade.
Description
Technical field
The present invention relates to distribution network technology field, more particularly, relate to a kind of intelligent adapted electricity flexible control system.
Background technology
Three-phase imbalance refers to that three-phase current (or voltage) amplitude is inconsistent in electric power system, and difference in magnitude exceedes prescribed limit.The harm that concrete three-phase imbalance problem causes has:
1, to the harm of transformer: in production, household electricity, when threephase load is uneven, make transformer be in asymmetric operation state, cause the loss increase of transformer, utilance reduction.Transformer zero-sequence current also can be caused excessive, and localized metallic part temperatures increases, and transformer seriously can be caused to burn simultaneously;
2, to the harm of power consumption equipment: three-phase imbalance can produce several times unsymmetrical current, and induction motor increases against moment of torsion, make that the temperature of motor rises, decrease in efficiency, vibrations aggravation, cause reduces the useful life of power consumption equipment, acceleration power consumption equipment aging;
3, on the impact of circuit: threephase load is uneven, causes the neutral line to have electric current to pass through, supply line's loss is increased.Low voltage electric network threephase load imbalance may cause high pressure phase current excessive, thus causes high-tension line overcurrent tripping to have a power failure, and the switchgear Frequent trip of transformer station has a power failure, and reduces the useful life of switchgear.
Therefore, three-phase imbalance problem not only causes serious impact to the economic reliability service of power supply grid, also reduces the quality of power supply of user and the reliability of power supply simultaneously.
Summary of the invention
In view of this, the invention provides a kind of intelligent adapted electricity flexible control system, meet a large amount of Monophase electric power users and three-phase power user, effectively solve power distribution network three-phase imbalance problem, reduce the infringement to equipment for power transmission and distribution and power consumption equipment, improve the reliability of power supply, economy and the quality of power supply.
For achieving the above object, the invention provides following technical scheme:
A kind of intelligent adapted electricity flexible control system, comprising: transformer, three-phase rectifier, at least one single-phase inverter and at least one three-phase inverter;
The input of described transformer connects power supply grid, for exporting three-phase alternating current;
The input of described three-phase rectifier connects the secondary side of described transformer, exports after described three-phase alternating current is converted to direct current;
The input of described single-phase inverter connects the output of described three-phase rectifier, exports after described direct current is converted to single-phase alternating current;
The input of described three-phase inverter connects the output of described three-phase rectifier, exports after described direct current is converted to three-phase alternating current.
Preferably, also comprise: at least one first chopper;
The input of described first chopper connects the output of described three-phase rectifier, exports after regulating the described galvanic magnitude of voltage size of input.
Preferably, described first chopper is buck chopper.
Preferably, also comprise: at least one distributed power supply module;
Described distributed power supply module is used for exporting direct current with described three-phase rectifier simultaneously, or when described three-phase rectifier power-off, as stand-by power supply.
Preferably, described distributed power supply module comprises: solar power station, batteries, the second chopper and photovoltaic handover module;
The output of described solar power station connects the input of described batteries, for being described battery charging;
The input of described second chopper connects the output of described batteries, and the output of described second chopper connects described photovoltaic handover module, exports after regulating the magnitude of voltage size of described batteries output voltage;
Whether described photovoltaic handover module is incorporated to the output of described three-phase rectifier for the output controlling described second chopper.
Preferably, described second chopper is boost chopper.
Preferably, also comprise: filtering, reactive compensation module;
Described filtering, reactive compensation module connect the input of described three-phase rectifier, for eliminating the harmonic wave of the three-phase alternating current of described three-phase rectifier, and compensate the reactive power of described three-phase rectifier consumption.
Preferably, at least one capacitor for voltage stabilizing and filtering is also connected with between the galvanic both positive and negative polarity that described three-phase rectifier exports.
Preferably, the quantity of described capacitor is 2,2 described capacitor series connection, and the capacitance of each capacitor is 4700 μ F, and rated voltage is 1000V.
Compared with prior art, technical scheme provided by the present invention has the following advantages:
Intelligent adapted electricity flexible control system provided by the present invention, comprises transformer, three-phase rectifier, at least one single-phase inverter and at least one three-phase inverter.The three-phase alternating current that transformer produces is converted to direct current and exports to inverter by three-phase rectifier, direct current is converted to frequency and all adjustable single-phase alternating current of amplitude by single-phase inverter, and direct current is converted to frequency and all adjustable three-phase alternating current of amplitude by three-phase inverter.
Intelligent adapted electricity flexible control system provided by the invention adopts the method to inversion after three-phase alternating current electric rectification, avoid a large amount of single-phase electric devices and directly access power supply grid and the three-phase imbalance problem caused, achieve the Flexible Control of single-phase alternating current and three-phase alternating current, reduce the infringement to equipment for power transmission and distribution and power consumption equipment, improve the reliability of power supply, economy and the quality of power supply.And the intelligent adapted electricity flexible control system module provided by the invention division of labor is clear and definite, is easy to design, builds, operation and maintenance, facilitates System Expansion to upgrade.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the intelligent adapted electricity flexible control system that Fig. 1 provides for the present embodiment.
Embodiment
As described in background, three-phase imbalance problem not only causes serious impact to the economic reliability service of power distribution network, also reduces the quality of power supply of user and the reliability of power supply simultaneously.Inventor studies discovery, and cause the reason of this defect to mainly contain and there is a large amount of Monophase electric power users, single-phase electric devices directly accesses power supply grid, causes power supply grid three-phase imbalance problem comparatively serious.
Based on this, the invention provides a kind of intelligent adapted electricity flexible control system, to overcome the problems referred to above that prior art exists, comprising:
Transformer, three-phase rectifier, at least one single-phase inverter and at least one three-phase inverter;
The input of described transformer connects power supply grid, for exporting three-phase alternating current;
The input of described three-phase rectifier connects the secondary side of described transformer, exports after described three-phase alternating current is converted to direct current;
The input of described single-phase inverter connects the output of described three-phase rectifier, exports after described direct current is converted to single-phase alternating current;
The input of described three-phase inverter connects the output of described three-phase rectifier, exports after described direct current is converted to three-phase alternating current.
Intelligent adapted electricity flexible control system provided by the present invention, comprises transformer, three-phase rectifier, at least one single-phase inverter and at least one three-phase inverter.The three-phase alternating current that transformer produces is converted to direct current and exports to inverter by three-phase rectifier, direct current is converted to frequency and all adjustable single-phase alternating current of amplitude by single-phase inverter, and direct current is converted to frequency and all adjustable three-phase alternating current of amplitude by three-phase inverter.
Intelligent adapted electricity flexible control system provided by the invention adopts the method to inversion after three-phase alternating current electric rectification, avoid a large amount of single-phase electric devices and directly access power supply grid and the three-phase imbalance problem caused, reduce the infringement to equipment for power transmission and distribution and power consumption equipment, improve the reliability of power supply, economy and the quality of power supply.And the intelligent adapted electricity flexible control system module provided by the invention division of labor is clear and definite, is easy to design, builds, operation and maintenance, facilitates System Expansion to upgrade.
Be more than core concept of the present invention, for enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Set forth a lot of detail in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar popularization when intension of the present invention, therefore the present invention is by the restriction of following public specific embodiment.
Secondly, the present invention is described in detail in conjunction with schematic diagram, when describing the embodiment of the present invention in detail; for ease of explanation; represent that the profile of device architecture can be disobeyed general ratio and be made partial enlargement, and described schematic diagram is example, it should not limit the scope of protection of the invention at this.In addition, the three-dimensional space of length, width and the degree of depth should be comprised in actual fabrication.
Present embodiments provide a kind of intelligent adapted electricity flexible control system, as shown in Figure 1, for the structural representation of the intelligent adapted electricity flexible control system that the present embodiment provides, comprising: transformer 1, three-phase rectifier 2, at least one single-phase inverter 3 and at least one three-phase inverter 4.
The input of transformer 1 connects power supply grid, and the secondary side of transformer 1 connects the input of three-phase rectifier 2, and transformer 1 is for exporting three-phase alternating current to three-phase rectifier 2, and the parameter of a kind of transformer 1 that the present embodiment provides is as following table:
| Type | The mode of connection | Voltage/kV | Capacity/kVA |
| Three-phase double winding | Δ/Y | 10/0.4 | 630 |
The input of three-phase rectifier 2 is connected with the secondary side of transformer 1, the three-phase alternating current that receiving transformer 1 produces, and three-phase alternating current is converted to direct current, as the both positive and negative polarity of the DC power supply of inverter, connects the input of inverter.The performance of three-phase rectifier 2 has important impact to connected inverter, and the parameter of a kind of three-phase rectifier 2 that the present embodiment provides is as following table:
| Pulse number | Rated direct voltage/V | Rated current/A | Rated power/kW | Power device |
| 12 | ±500 | 300 | 300 | IGBT |
Single-phase inverter 3 is for being converted to single-phase alternating current by direct current, and the input of single-phase inverter 3 connects the output of three-phase rectifier 2, namely connects the both positive and negative polarity of DC power supply, and the output of single-phase inverter 3 connects single-phase electric devices.Three-phase rectifier 2 is input to single-phase inverter 3 after the three-phase alternating current that transformer 1 exports is converted to direct current, and single-phase inverter 3 outputs to single-phase electric devices after the direct current of input is converted to single-phase alternating current.The voltage magnitude of the single-phase alternating current that single-phase inverter 3 exports and frequency can adjust according to the demand of single-phase electric devices, meet the requirement of single-phase electric devices.The parameter of a kind of single-phase inverter 3 that the present embodiment provides is as following table:
| Type | Rated voltage/V | Rated current/A | Rated power/kW | Power device |
| Single-phase full bridge | 220 | 200 | 44 | IGBT |
Three-phase inverter 4 is for being converted to three-phase alternating current by direct current, the input of three-phase inverter 3 connects the output of three-phase rectifier 2, namely the output of three-phase rectifier 2 is as the both positive and negative polarity of DC power supply, simultaneously for single-phase inverter 3 and three-phase inverter 4 provide direct current, the output of three-phase inverter 4 connects three phase electric equipment.Three-phase rectifier 2 is input to three-phase inverter 4 after the three-phase alternating current that transformer 1 exports is converted to direct current, and three-phase inverter 4 outputs to three phase electric equipment after the direct current of input is converted to three-phase alternating current.Same, the voltage magnitude of the three-phase alternating current that three-phase inverter 4 exports and frequency can adjust according to the demand of three phase electric equipment, meet the requirement of three phase electric equipment.The parameter of a kind of three-phase inverter 4 that this enforcement is carried is as following table:
| Type | Rated voltage/V | Rated current/A | Rated power/kW | Power device |
| Three-phase bridge | 380 | 200 | 132 | IGBT |
Shown in figure 1, three-phase rectifier 4 output as the both positive and negative polarity of DC power supply, DC master row 5 is connected to by two DC buss (i.e. DC bus+and DC bus-), DC master row 5 distributes multiple connection line, make to connect the input of single-phase inverter 3 and the input of three-phase inverter 4 during the positive and negative electrodes in same of the DC power supply of three-phase rectifier 4, finally complete the conversion of direct current and single-phase alternating current and three-phase alternating current.
In order to meet direct current power consumption equipment, the intelligent adapted electricity flexible control system that the present embodiment provides also comprises at least one first chopper 6.The input of the first chopper 6 connects the output of three-phase rectifier 2, and namely the input of the first chopper 6 is connected by the both positive and negative polarity of DC master row 5 with the DC power supply of three-phase rectifier 2, and the output of the first chopper 6 connects direct current power consumption equipment.First chopper 6 outputs to direct current power consumption equipment after regulating the galvanic magnitude of voltage size of input.The first chopper that the present embodiment provides is buck chopper.Same, the first chopper also can be boost chopper, for different direct current users carries the voltage of different magnitude of voltage.
Shown in figure 1, the intelligent adapted electricity flexible control system that the present embodiment provides also comprises: at least one distributed power supply module 7, described distributed power supply module 7 is for exporting direct current with described three-phase rectifier 2 simultaneously, or when three-phase rectifier 2 power-off, as stand-by power supply, for single-phase inverter, three-phase inverter or the first chopper provide direct current.When three-phase rectifier 2 normally exports, distributed power supply module 7 is incorporated to the output of three-phase rectifier 2, exports direct current with three-phase rectifier 2 for single-phase inverter 3, three-phase inverter 4 and the first chopper 6 simultaneously; When three-phase rectifier 2 power-off, distributed power supply module 7 and single-phase inverter 3, between three-phase inverter 4 and the first chopper 6, be equivalent to UPS(UninterruptiblePowerSystem/UninterruptiblePowerSuppl y in short-term, uninterrupted power supply).
Wherein, distributed power supply module 7 comprises: solar power station 71, batteries 72, second chopper 73 and photovoltaic handover module 74.The output of solar power station 71 connects the input of batteries 72, for being electric energy by transform light energy, and charges for batteries 72.The input of the second chopper 73 connects the output of batteries 72, and batteries 72 is the second chopper 73 output current, and the second chopper 73 exports after regulating the magnitude of voltage size of batteries 72 output voltage.Whether photovoltaic handover module 74 is incorporated to the output of three-phase rectifier 74 for the output controlling the second chopper 73, photovoltaic handover module 74 is equivalent to judge switch, and the output controlling the second chopper 73 is that single-phase inverter, three-phase inverter and the first chopper export direct current.The second chopper that the present embodiment provides is boost chopper, and the magnitude of voltage of batteries output voltage is risen to DC bus-bar voltage.
In addition, in order to improve the q&r of electrical network electric energy, the intelligent adapted electricity flexible control system that the present embodiment provides also comprises: filtering, reactive compensation module 8, the secondary side of filtering, reactive compensation module 8 connection transformer 1, for eliminating the harmonic wave of the three-phase alternating current that described transformer 1 exports, and compensate the reactive power of described three-phase rectifier 2 consumption, prevent because idle deficiency causes brownout.
Between the galvanic both positive and negative polarity that three-phase rectifier 2 exports, (i.e. the both positive and negative polarity of the DC power supply of three-phase rectifier 2) is also connected with at least one capacitor for voltage stabilizing and filtering.The quantity of the preferred capacitor of the present embodiment is 2,2 capacitor series connection, and the capacitance of each capacitor is 4700 μ F, and rated voltage is 1000V.The setting of capacitor ensure that the safety and reliability of intelligent adapted electricity flexible control system.
Intelligent adapted electricity flexible control system provided by the present invention, comprises transformer, three-phase rectifier, at least one single-phase inverter and at least one three-phase inverter.The three-phase alternating current that transformer produces is converted to direct current and exports to inverter by three-phase rectifier, direct current is converted to frequency and all adjustable single-phase alternating current of amplitude by single-phase inverter, and direct current is converted to frequency and all adjustable three-phase alternating current of amplitude by three-phase inverter.
Intelligent adapted electricity flexible control system provided by the invention adopts the method to inversion after three-phase alternating current electric rectification, avoid a large amount of single-phase electric devices and directly access power supply grid and the three-phase imbalance problem caused, reduce the infringement to equipment for power transmission and distribution and power consumption equipment, improve the reliability of power supply, economy and the quality of power supply.And the intelligent adapted electricity flexible control system module provided by the invention division of labor is clear and definite, is easy to design, builds, operation and maintenance, facilitates System Expansion to upgrade.
In addition, the embodiment of the present invention also comprises the first chopper be connected with three-phase rectifier, facilitates direct current power consumption equipment, achieves the variation of electric energy output form.And the continued power of distributed power supply module when not only having ensured power supply grid power-off, also solve the problem of photovoltaic power generation grid-connecting simultaneously, and due to the access of distributed power supply module, ensure that intelligent adapted electricity flexible control system that the present embodiment provides can peak load shifting in power distribution network terminal, realize load Flexible Control.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. an intelligent adapted electricity flexible control system, is characterized in that, comprising: transformer, three-phase rectifier, at least one single-phase inverter and at least one three-phase inverter;
The input of described transformer connects power supply grid, for exporting three-phase alternating current;
The input of described three-phase rectifier connects the secondary side of described transformer, exports after described three-phase alternating current is converted to direct current;
The input of described single-phase inverter connects the output of described three-phase rectifier, exports after described direct current is converted to single-phase alternating current;
The input of described three-phase inverter connects the output of described three-phase rectifier, exports after described direct current is converted to three-phase alternating current;
Described intelligent adapted electricity flexible control system also comprises: at least one first chopper;
The input of described first chopper connects the output of described three-phase rectifier, exports after regulating the described galvanic magnitude of voltage size of input;
Described first chopper is buck chopper;
Described intelligent adapted electricity flexible control system also comprises: at least one distributed power supply module;
Described distributed power supply module is used for exporting direct current with described three-phase rectifier simultaneously, or when described three-phase rectifier power-off, as stand-by power supply;
Described distributed power supply module comprises: solar power station, batteries, the second chopper and photovoltaic handover module;
The output of described solar power station connects the input of described batteries, for being described battery charging;
The input of described second chopper connects the output of described batteries, and the output of described second chopper connects described photovoltaic handover module, exports after regulating the magnitude of voltage size of described batteries output voltage;
Whether described photovoltaic handover module is incorporated to the output of described three-phase rectifier for the output controlling described second chopper;
Described second chopper is boost chopper.
2. intelligent adapted electricity flexible control system according to claim 1, is characterized in that, also comprise: filtering, reactive compensation module;
Described filtering, reactive compensation module connect the input of described three-phase rectifier, for eliminating the harmonic wave of the three-phase alternating current of described three-phase rectifier, and compensate the reactive power of described three-phase rectifier consumption.
3. intelligent adapted electricity flexible control system according to claim 1, is characterized in that, is also connected with at least one capacitor for voltage stabilizing and filtering between the galvanic both positive and negative polarity that described three-phase rectifier exports.
4. intelligent adapted electricity flexible control system according to claim 3, it is characterized in that, the quantity of described capacitor is 2,2 described capacitor series connection, and the capacitance of each capacitor is 4700 μ F, and rated voltage is 1000V.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104078971A (en) * | 2014-07-10 | 2014-10-01 | 广东工业大学 | Microgrid three-phase-balanced and electricity-optimized sub-grid structure and control method |
| CN105244884B (en) * | 2015-11-02 | 2019-03-08 | 贵州大学 | A kind of flexible access smart home interface |
| CN106300397A (en) * | 2016-08-30 | 2017-01-04 | 南京相量电气有限公司 | A kind of load unbalanced controlling device of three-phase power |
| CN107623353A (en) * | 2017-10-09 | 2018-01-23 | 上海玖行能源科技有限公司 | A kind of military intelligences combination power-supply system |
| CN109560555B (en) * | 2018-11-30 | 2022-05-03 | 西安宸瑞电工科技发展有限公司 | Power supply method and system for factory electric equipment |
| CN112350311A (en) * | 2020-10-29 | 2021-02-09 | 湖北春田电工技术有限公司 | Multipurpose flexible interconnection device suitable for common zero line low-voltage power distribution system |
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| CN202759252U (en) * | 2012-08-10 | 2013-02-27 | 沈阳工业大学 | Power grid operation control system including multiterminal flexible DC transmission system |
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| CN101295877A (en) * | 2008-06-05 | 2008-10-29 | 上海交通大学 | Control system of offshore wind power flexible DC power transmission current transformer |
| CN101860228A (en) * | 2010-05-07 | 2010-10-13 | 中国科学院电工研究所 | Power electronic transformer for high voltage distribution |
| CN202759252U (en) * | 2012-08-10 | 2013-02-27 | 沈阳工业大学 | Power grid operation control system including multiterminal flexible DC transmission system |
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