CN103326453A - Megawatt converting technique research and development platform - Google Patents
Megawatt converting technique research and development platform Download PDFInfo
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- CN103326453A CN103326453A CN2013102876627A CN201310287662A CN103326453A CN 103326453 A CN103326453 A CN 103326453A CN 2013102876627 A CN2013102876627 A CN 2013102876627A CN 201310287662 A CN201310287662 A CN 201310287662A CN 103326453 A CN103326453 A CN 103326453A
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Abstract
The invention discloses a megawatt converting technique research and development platform. The megawatt converting technique research and development platform comprises a three-phase alternating-current power supply, two electric metering meters, a charging device, a rectifying module and a converter set, wherein the three-phase alternating-current power supply is connected with the charging device and the rectifying module; the first electric energy metering meter is connected with the charging device; the rectifying module is connected with an intelligent complementary interface; the charging device is connected with an energy storage device; the intelligent complementary interface is connected with the energy storage device and the converter set; the converter set is connected with a load by a waveform processing device; the energy storage device is connected with the load by an energy feedback device; and the energy feedback device is connected with the second electric energy metering meter. The megawatt converting technique research and development platform disclosed by the invention is a comprehensive platform which is used for researching and developing a digital control technique of a megawatt converting system, so that the research and development of megawatt AD-DC (Analog Digital-Direct Current) conversion, DC-AC (Direct Current-Alternating Current) conversion, voltage frequency conversion, electric energy quality analysis as well as novel energy grid-connection and off-grid, electric energy intelligent complementary switchover and micro-grid energy storage technologies can be carried out.
Description
Technical field
The present invention relates to electric and electronic technical field, particularly the comprehensive Scientific Research Platform of the field research and development such as new forms of energy current transformer group, ship shore electric, fire-fighting emergent power supply, uninterrupted power supply, specifically a kind of MW class Semiconductor Converting Technology research/development platform.
Background technology
Modern Semiconductor Converting Technology is based upon on the basis of the subjects such as semiconductor device, modern control technology, Semiconductor Converting Technology, modern power electronics technology.The research of digitlization converter system not only has vast potential for future development, and has the application value of reality.The market demand has promoted the development of Variable flow control technology, no matter is its learning value or its market position and economic benefit, all is worth us to go research and development.Converter system has been widely used in all trades and professions, and the small-power Semiconductor Converting Technology is very ripe, but the MW class converter system also exists control, connection in series-parallel, heat radiation, the technical barrier such as anti-interference, is still the focus of the research and development of academia and engineering circles.There is no at present the comprehensive development platform that can carry out system research and development both at home and abroad.
Summary of the invention
Technical problem to be solved by this invention is for the prior art deficiency, to provide a kind of MW class Semiconductor Converting Technology research/development platform that can carry out system research and development.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of MW class Semiconductor Converting Technology research/development platform, comprise three-phase alternating-current supply, two electric energy meters, charging device, rectification module, the current transformer group, described three-phase alternating-current supply and described charging device, rectification module connects, the first electric energy meter is connected with described charging device, described rectification module connects intelligent complementary interface, described charging device connects energy storage device, the complementary interface of described intelligence and described energy storage device, the current transformer group connects, described current transformer group connects load through the waveform processing device, described energy storage device connects described load through energy back feed device, and described energy back feed device is connected with the second electric energy meter.
As preferred version, the complementary interface of described intelligence comprises the inversion module that connects described rectification module, the described current transformer group of described inversion module output termination input, the positive output end of described inversion module is connected with two diode branch, described two diode branch connect respectively external solar power generating source positive output end and outside wind energy power generating source positive output end, described solar power generation power-output be connected wind energy power generating source negative output terminal and all connect described inversion module negative output terminal.
As preferred version, described energy back feed device comprises brachium pontis and capacitive branch of three parallel connections, described capacitive branch is in parallel with described brachium pontis, described brachium pontis comprises the IGBT of two series connection, be connected to an inductance between described capacitive branch and the described brachium pontis, described capacitive branch two ends are connected with described energy storage device output respectively; Three brachium pontis connect described load.
Compared with prior art, the beneficial effect that the present invention has is: platform of the present invention is the comprehensive platform for the research and development of MW class converter system digital control technology, the open type soft hardware interface is provided, can have carried out MW class AD-DC conversion, DC-AC conversion, voltage-frequency conversion, power quality analysis and new forms of energy and switch and the research and development of microgrid energy storage technology from net, electric energy intelligence is complementary.Utilize this platform can cultivate and improve teacher, postgraduate and engineers and technicians in research and development and the engineering application power in the fields such as new forms of energy current transformer group, ship shore electric, fire-fighting emergent power supply, uninterrupted power supply.
Description of drawings
Fig. 1 is one embodiment of the invention theory diagram;
Fig. 2 is one embodiment of the invention current transformer group structured flowchart;
Fig. 3 is the complementary interface circuit schematic diagram of one embodiment of the invention intelligence;
Fig. 4 is one embodiment of the invention energy back feed device circuit theory diagrams.
Embodiment
As shown in Figure 1, one embodiment of the invention comprises three-phase alternating-current supply, two electric energy meters, charging device, rectification module, the current transformer group, described three-phase alternating-current supply and described charging device, rectification module connects, the first electric energy meter is connected with described charging device, described rectification module connects intelligent complementary interface, described charging device connects energy storage device, the complementary interface of described intelligence and described energy storage device, the current transformer group connects, described current transformer group connects load through the waveform processing device, described energy storage device connects described load through energy back feed device, and described energy back feed device is connected with the second electric energy meter.
The workflow of this platform is: the electric energy of input (adopts three-phase intelligent ammeter through metering, be ACEL380 such as model) after can enter charging device (be the controllable silicon charger of 560V/30A such as model) to energy storage device (can adopt lithium battery etc.) charging, also can enter intelligent rectification module, become direct current, then input intelligent complementary interface, wind power generation, solar energy and energy storage device electric energy all enter intelligent complementary interface, this module is carried out preferably multiple input electric energy, with optimal electric energy output, then access multiple module paralleling current transformer (being the current transformer group), be transformed into interchange, pass through again the good electric energy of stable output after waveform processing device (LC filter) filtering, supply load, this load can be electrical networks, also can be motor or other single threephase loads.Be motor such as load, when motor braking, the energy of generation can be fed back to energy storage device.
Current transformer group structured flowchart of the present invention as shown in Figure 2, rated power: unit 500 KW(are when rated voltage is exported, continuously), double parallel 1000KW(is when rated voltage is exported, continuously); Output-current rating: 1300A(is continuous); Frequency: (0-400Hz) ± 0.05 %(is adjustable continuously); Voltage: 0-480V is adjustable continuously.And dynamic characteristic is: output voltage range when 100% nominal load impact, anticlimax:, rated value ± 5%, voltage returns to steady state voltage scope time:＜25ms, and frequency retrieval is to steady frequency scope time:＜25ms, and power factor: 0.8(lags behind) ~ 0.95(is leading); In parallel: adopt optical-fibre communications to carry out parallel connection, inversion unit nonuniform fluid＜5%, but slave free setting, but slave yet independent operating after arranging is not＜under 50% nominal load, the output of slave fault is shut down.Every current transformer can intactly be preserved service data record in nearest 30 days, and the each run data record comprises: the electric power on/off state shows; Each output voltage, electric current, active power state show; Output frequency shows; Malfunction shows; This record can be preserved 10 years under powering-off state, and had RS485 special purpose interface and Chinese software; Controller adopts 32 bit DSP digital signal processors.
As shown in Figure 3, the complementary interface of intelligence comprises the inversion module that connects described rectification module, the described current transformer group of described inversion module output termination input, the positive output end of described inversion module is connected with two diode branch, described two diode branch connect respectively external solar power generating source positive output end and outside wind energy power generating source positive output end, described solar power generation power-output be connected wind energy power generating source negative output terminal and all connect described inversion module negative output terminal.The complementary interface of intelligence can carry out seamless complementary the switching between multiple input electric energy, be not more than 3ms switching time, also can manually preferably switch.
Energy storage device can adopt lithium battery, hull cell, super capacitor etc., its floating serve life should reach more than 15 years, the property checked discharges and recharges number of times greater than 700 times, the cycle life of 80% depth of discharge is not less than 300 times, self-discharge rate is not more than 2% per month, when the switchgear house temperature at+5 ℃---still can satisfy at full capacity power reguirements in the time of+40 ℃, the maintenance of this electricity energy storage device is easy, when temperature at+15 ℃---in the time of+40 ℃, need not adjust float charge voltage according to ambient temperature and carry out temperature-compensating, guarantee useful life and the charge volume of energy storage device, energy storage device can not produce etchant gas, and terminal block between energy storage device, terminal fitting should be selected the good material of electric conductivity, and have anticorrosive measure, and shell is without modification, crackle and stain, polarity is correct, just, negative polarity and terminal have distinguishing mark, are convenient to connect.
As shown in Figure 4, energy back feed device comprises brachium pontis and capacitive branch of three parallel connections, described capacitive branch is in parallel with described brachium pontis, described brachium pontis comprises the IGBT of two series connection, be connected to an inductance between described capacitive branch and the described brachium pontis, described capacitive branch two ends are connected with described energy storage device output respectively; Three brachium pontis connect described load.Among Fig. 4, K1-K6 is IGBT, and L1, L2 are inductance, and C is electric capacity, and D1 is diode.Energy back feed device can be with the controlled feedback grid of unnecessary electric energy or feedback energy-storage system; feedback electric current 0-1000A is adjustable continuously; the overload and the rush of current that can protection cause because of circuit breaker action in the access of output load or the distribution system etc.; prevent the phase shortage of input power, and load changing is had the self-shield ability with short circuit and to feedback device itself with the load that links to each other and measurable permanent damage.
Claims (7)
1. MW class Semiconductor Converting Technology research/development platform, comprise three-phase alternating-current supply, two electric energy meters, charging device, rectification module, the current transformer group, it is characterized in that, described three-phase alternating-current supply and described charging device, rectification module connects, the first electric energy meter is connected with described charging device, described rectification module connects intelligent complementary interface, described charging device connects energy storage device, the complementary interface of described intelligence and described energy storage device, the current transformer group connects, described current transformer group connects load through the waveform processing device, described energy storage device connects described load through energy back feed device, and described energy back feed device is connected with the second electric energy meter.
2. MW class Semiconductor Converting Technology research/development platform according to claim 1 is characterized in that, described electric energy meter model is ACEL380.
3. MW class Semiconductor Converting Technology research/development platform according to claim 1 is characterized in that, described charging device is the controllable silicon charger of 560V/30A.
4. MW class Semiconductor Converting Technology research/development platform according to claim 1 is characterized in that, described energy storage device is lithium battery.
5. MW class Semiconductor Converting Technology research/development platform according to claim 1 is characterized in that, described waveform processing device is the LC filter.
6. MW class Semiconductor Converting Technology research/development platform according to claim 1, it is characterized in that, the complementary interface of described intelligence comprises the inversion module that connects described rectification module, the described current transformer group of described inversion module output termination input, the positive output end of described inversion module is connected with two diode branch, described two diode branch connect respectively external solar power generating source positive output end and outside wind energy power generating source positive output end, described solar power generation power-output be connected wind energy power generating source negative output terminal and all connect described inversion module negative output terminal.
7. MW class Semiconductor Converting Technology research/development platform according to claim 1, it is characterized in that, described energy back feed device comprises brachium pontis and capacitive branch of three parallel connections, described capacitive branch is in parallel with described brachium pontis, described brachium pontis comprises the IGBT of two series connection, be connected to an inductance between described capacitive branch and the described brachium pontis, described capacitive branch two ends are connected with described energy storage device output respectively; Three brachium pontis connect described load.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103546016A (en) * | 2013-10-28 | 2014-01-29 | 青岛艾迪森科技有限公司 | Megawatt-level power developing platform |
| CN109507607A (en) * | 2018-10-29 | 2019-03-22 | 国家电网有限公司 | Portable storage battery group voltage acquisition instrument |
Citations (4)
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| CN102590744A (en) * | 2011-01-13 | 2012-07-18 | 三一电气有限责任公司 | Test method, test platform and test system for wind-photovoltaic-storage hybrid grid-connected power generation |
| CN102593832A (en) * | 2012-03-15 | 2012-07-18 | 武汉大学 | Three-wire DC microgrid system suitable for modern buildings and control method thereof. |
| CN103236690A (en) * | 2013-04-16 | 2013-08-07 | 深圳市光辉电器实业有限公司 | Intelligent megawatt wind power and light storage integrated power station |
| CN203352262U (en) * | 2013-07-10 | 2013-12-18 | 温州大学 | Megawatt grade current transforming technology research and development platform |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590744A (en) * | 2011-01-13 | 2012-07-18 | 三一电气有限责任公司 | Test method, test platform and test system for wind-photovoltaic-storage hybrid grid-connected power generation |
| CN102593832A (en) * | 2012-03-15 | 2012-07-18 | 武汉大学 | Three-wire DC microgrid system suitable for modern buildings and control method thereof. |
| CN103236690A (en) * | 2013-04-16 | 2013-08-07 | 深圳市光辉电器实业有限公司 | Intelligent megawatt wind power and light storage integrated power station |
| CN203352262U (en) * | 2013-07-10 | 2013-12-18 | 温州大学 | Megawatt grade current transforming technology research and development platform |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103546016A (en) * | 2013-10-28 | 2014-01-29 | 青岛艾迪森科技有限公司 | Megawatt-level power developing platform |
| CN109507607A (en) * | 2018-10-29 | 2019-03-22 | 国家电网有限公司 | Portable storage battery group voltage acquisition instrument |
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