CN104037767A - Suppression device for overvoltage and harmonic of energy storage type power grid - Google Patents
Suppression device for overvoltage and harmonic of energy storage type power grid Download PDFInfo
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- CN104037767A CN104037767A CN201410278327.5A CN201410278327A CN104037767A CN 104037767 A CN104037767 A CN 104037767A CN 201410278327 A CN201410278327 A CN 201410278327A CN 104037767 A CN104037767 A CN 104037767A
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- overvoltage
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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
Abstract
The invention discloses a suppression device for overvoltage and harmonic of an energy storage type power grid and belongs to the technical field of power electronics. The suppression device is applicable to suppressing the overvoltage and the harmonic of the power grid and eliminating damage to power grid equipment caused by the overvoltage and the harmonic, particularly adaptable to industrial occasions meeting drastic fluctuation such as an electric-arc furnace and a submerged arc furnace. By the suppression device, working stability of the power grid and economic benefits are improved.
Description
Technical field
The present invention relates to a kind of new energy storage type electrical network overvoltage and harmonic suppression apparatus, belong to electric and electronic technical field.Especially can be applied in the industrial occasions of the load big ups and downs such as arc furnace, mineral hot furnace, rolling mill.
Background technology
Along with economic growth, electric power system is also in development at a gallop, installed capacity is increasing, line voltage is more and more higher, area coverage is more and more wider, the medium-and-large-sized impact load of electrical network and nonlinear-load are more and more, make electrical network that the power quality problem such as voltage waveform distortion, overvoltage often occur, seriously affect the safe and stable operation of electric power system.What current impact was larger mainly contains following several aspect.
1. in electrical network, have a large amount of power transformers, they can produce and be equivalent to shoving of rated current several times in the time that zero load drops into, and contain a large amount of high order harmonic components and can produce on the line overvoltage in shoving; In the time that excising, zero load can produce the overvoltage that is equivalent to rated voltage several times.This not only can pollute electrical network, affect power supply quality, also can damage transformer self.According to authoritative data introduction, in electrical network, the total capacity of transformer can reach the more than 4 times of generator total capacity, and their harmonic current total value is very large, can reach 1 ﹪～2 ﹪ of whole rated current of generator summations, becomes the important sources of electrical network background harmonics.Large and the harmful harmonic wave that contains wide spectrum of transformer no-load switchon surge (hereinafter to be referred as shoving) numerical value, usually can cause that protective relaying maloperation does, causes that homologous ray transformer produces and echo surge current tripping operation, affect stablizing of electrical network.The huge electric power producing of shoving can threaten transformer self insulation.Switching overvoltage directly threatens transformer self insulation especially.In the last few years, use the transformer of cold-reduced silicon sheet iron core more and more, its no-load current is very little, thereby conventionally can not produce the cut-off overvoltage that exceedes insulation level yet, but can not say that under all situations, cut-offfing no-load transformer does not all need to note, such as the furnace transformer of steel mill, need folding every day up to a hundred times, like this, though a lot of overvoltage of the not high number of times of amplitude can produce cumulative effect to the insulation of equipment, still be there is to threat in the safe operation of transformer.
2. in arc furnace, can often have steel scrap slump to get off and collide and cause short circuit with electrode, the therefore size of electric current big ups and downs brokenly repeatedly in system, cause very large load impact, and current waveform seriously distorts.The sharply variation of arc furnace current, makes the voltage at distribution bus place also produce sharply variation, wherein contains a large amount of high order harmonic components, and the superimposed formation overvoltage of higher harmonic voltage and power-frequency voltage, causes great injury to the power consumption equipment of same electrical network.And high order harmonic component can cause local pyrexia, destroy insulation in generator and motor, cause motor to damage; Protective relaying maloperation is done, affected electrical network and normally move; The loss of power transformer and consumer electronics equipment is increased, and the life-span reduces; Make instrument and meter metering inaccurate; Reactive power compensator can not be put into operation etc.Mineral hot furnace is to rely on arc heat and charging resistance heat to carry out work, and just degree is slightly light compared with arc furnace.
3. electric locomotive will pass through non-Electric region, will cut, close a floodgate in by front and back locomotive in travelling continually, all makes the main transformer of locomotive produce switching overvoltage and shove at every turn.Switching overvoltage affects transformer life; Reach the several times of rated current and shove, harmonic content is very large, and electrical network is caused to severe jamming, and often can cause electric power railway power system fault.
4. the welding equipment of automobile factory is also impact load, and its high order harmonic component can cause control system malfunctioning.
5. the rolling system of steel mill is the large load of impact, very important on the impact of electrical network.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of device that utilizes capacitance energy storage technology over-voltage suppression and harmonic wave.Energy storage type electrical network overvoltage and harmonic suppression apparatus can be installed on power supply buses, make the stable also energy of busbar voltage harmonic carcellation, can avoid the various faults such as power supply unit damage.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions a kind of energy storage type electrical network overvoltage and harmonic suppression apparatus, comprises K switch 1, transformer TK, rectifier bridge DK, storage capacitor C; Also comprise K switch 2, charging resistor R1, driver module CF, repid discharge gated transistor IGBT, fast electric discharge resistance R3, discharge resistance R2, Programmable Logic Controller PLC; One end of described K switch 1 connects power supply buses, the former limit of another termination transformer TK, and the secondary of transformer TK meets rectifier bridge DK; A termination rectifier bridge anode after charging resistor R1 and K switch 2 are in parallel, another termination storage capacitor C; Discharge resistance R2 is connected in parallel on the two ends of storage capacitor C; The two ends that are connected in parallel on storage capacitor C after repid discharge gated transistor IGBT and fast electric discharge resistance R3 series connection, driver module CF is connected on the control utmost point of gated transistor IGBT.The control system of described energy storage type electrical network overvoltage and harmonic suppression apparatus adopts programmable controller PLC or industrial computer COM control system.
While powering on, state is cut-off at K switch 2 places, and capacitor C is charged through resistance R 1, is full of rear K switch 2 closures.In the time having overvoltage to produce on bus, transformer TK secondary voltage rises simultaneously, rectifier bridge output voltage rises, storage capacitor C is charged, and because capacitance is very large, therefore the rising of voltage is restricted.When having served as voltage energy and having reach a certain height compared with the voltage of ambassador's capacitor C, the repid discharge gated transistor IGBT conducting that is triggered, fast electric discharge resistance R3 adds electric discharge, stops superpotential excessive rising.The effect of discharge resistance R2 is the voltage back to zero that makes storage capacitor C after having a power failure.
Brief description of the drawings
Fig. 1 is the main circuit diagram of a kind of energy storage type electrical network overvoltage and harmonic suppression apparatus.
Fig. 2 has adopted by power electronic device IGCT to replace a kind of energy storage type electrical network overvoltage and the harmonic suppression apparatus that gated transistor IGBT, computer control system COM replacement Programmable Logic Controller PLC forms.
Embodiment
Adopt a kind of new energy storage type electrical network overvoltage of energy storage technology and harmonic suppression apparatus main circuit diagram as shown in Figure 1: a kind of energy storage type electrical network overvoltage and harmonic suppression apparatus, comprise K switch 1, transformer TK, rectifier bridge DK, storage capacitor C; Also comprise K switch 2, charging resistor R1, driver module CF, repid discharge gated transistor IGBT, fast electric discharge resistance R3, discharge resistance R2, Programmable Logic Controller PLC; One end of described K switch 1 connects power supply buses, the former limit of another termination transformer TK, and the secondary of transformer TK meets rectifier bridge DK; A termination rectifier bridge anode after charging resistor R1 and K switch 2 are in parallel, another termination storage capacitor C; Discharge resistance R2 is connected in parallel on the two ends of storage capacitor C; The two ends that are connected in parallel on storage capacitor C after repid discharge gated transistor IGBT and fast electric discharge resistance R3 series connection, driver module CF is connected on the control utmost point of gated transistor IGBT.The control system of described energy storage type electrical network overvoltage and harmonic suppression apparatus adopts Programmable Logic Controller PLC.If turn-key system has leeway, the control of this part also can be carried out by turn-key system.When normal work, busbar voltage makes storage capacitor be filled with certain voltage through transformer TK; In the time having overvoltage to produce on bus (in because of stove, disturbance or bus transmit), transformer TK secondary voltage rises simultaneously, rectifier bridge output voltage rises, storage capacitor C is charged, because capacitance is very large, therefore the rising of voltage is restricted, and can not produce overvoltage.Because the high order harmonic component on bus is suppressed, therefore greatly simplify the work of reactive compensation system.
Fig. 2 is for adopting industrial computer COM control system, and its control method is same as described above; Power electronic device adopts full control device IGCT to implement to control.
Just two kinds of embodiments of this invention of foregoing description, do not illustrate essence of an invention Composition of contents is limited, person of an ordinary skill in the technical field, having read amendment or the modification after specification, aforesaid embodiment made, does not deviate from essence of an invention and scope.
Claims (4)
1. novel energy-storing formula power network overvoltage and a harmonic suppression apparatus, comprises switch (K1), transformer (TK), rectifier bridge (DK), storage capacitor (C); Also comprise switch (K2), charging resistor (R1), driver module (CF), repid discharge gated transistor (IGBT), fast electric discharge resistance (R3), discharge resistance (R2), Programmable Logic Controller (PLC); One end of described switch (K1) connects power supply buses, another former limit of termination transformer (TK), and transformer (TK) secondary connects rectifier bridge (DK); A termination rectifier bridge anode after charging resistor (R1) and switch (K2) are in parallel, another termination storage capacitor (C); Discharge resistance (R2) is connected in parallel on the two ends of storage capacitor (C); The two ends that are connected in parallel on storage capacitor (C) after repid discharge gated transistor (IGBT) and fast electric discharge resistance (R3) series connection, driver module (CF) is connected on the control utmost point of rectifier bridge anode and gated transistor (IGBT).
2. energy storage type electrical network overvoltage according to claim 1 and harmonic suppression apparatus, is characterized in that control system adopts Programmable Logic Controller (PLC) or industrial computer (COM) control system; If turn-key system has leeway, the control of this part also can be carried out by turn-key system.
3. energy storage type electrical network overvoltage according to claim 1 and harmonic suppression apparatus, is characterized in that adopting full control device (IGCT) when power electronic device, can obtain large electric current and entirely control adjusting.
4. energy storage type electrical network overvoltage according to claim 1 and harmonic suppression apparatus, it is characterized in that in the time that overvoltage appears in electrical network, storage capacitor (C) has limited overvoltage and harmonic wave, and repid discharge gated transistor (IGBT) and fast electric discharge resistance (R3) have stoped voltage excessively to raise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410278327.5A CN104037767A (en) | 2014-06-20 | 2014-06-20 | Suppression device for overvoltage and harmonic of energy storage type power grid |
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| CN201410278327.5A CN104037767A (en) | 2014-06-20 | 2014-06-20 | Suppression device for overvoltage and harmonic of energy storage type power grid |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425524A (en) * | 2017-06-28 | 2017-12-01 | 南京航空航天大学 | A kind of rectification suppression circuit for the specific higher hamonic wave of Traction networks |
| CN109617034A (en) * | 2018-08-23 | 2019-04-12 | 潘政强 | Uninterrupted power supply Intelligent over voltage protective device |
| ES2836000A1 (en) * | 2019-12-23 | 2021-06-23 | Fund Cener | CONTINUOUS INTENSITY ADJUSTMENT DEVICE FOR AN ELECTRIC ARC OVEN (Machine-translation by Google Translate, not legally binding) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002291160A (en) * | 2001-03-29 | 2002-10-04 | Toyo Electric Mfg Co Ltd | Cogeneration system |
| CN102035402A (en) * | 2010-11-24 | 2011-04-27 | 中国船舶重工集团公司第七一二研究所 | Integrated gate-commutated thyristor (IGCT)-based hybrid cascaded H-bridge multi-level high-voltage inverter |
| CN102354959A (en) * | 2011-09-07 | 2012-02-15 | 深圳市航盛电子股份有限公司 | Overvoltage protection system of power device and method adopting overvoltage protection system |
| CN102751711A (en) * | 2012-05-29 | 2012-10-24 | 浙江吉利汽车研究院有限公司杭州分公司 | Motor controller discharging safety device for hybrid electric vehicle |
| CN103192777A (en) * | 2013-04-08 | 2013-07-10 | 富奥汽车零部件股份有限公司 | High-voltage control circuit of electric automobile |
| CN103683294A (en) * | 2012-09-21 | 2014-03-26 | 哈尔滨帕特尔科技股份有限公司 | Adjustable reactor type voltage regulating and stabilizing device |
| CN103683307A (en) * | 2012-09-21 | 2014-03-26 | 哈尔滨帕特尔科技股份有限公司 | New type series compensated line subsynchronous resonance damping and short-circuit current limiting device |
-
2014
- 2014-06-20 CN CN201410278327.5A patent/CN104037767A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002291160A (en) * | 2001-03-29 | 2002-10-04 | Toyo Electric Mfg Co Ltd | Cogeneration system |
| CN102035402A (en) * | 2010-11-24 | 2011-04-27 | 中国船舶重工集团公司第七一二研究所 | Integrated gate-commutated thyristor (IGCT)-based hybrid cascaded H-bridge multi-level high-voltage inverter |
| CN102354959A (en) * | 2011-09-07 | 2012-02-15 | 深圳市航盛电子股份有限公司 | Overvoltage protection system of power device and method adopting overvoltage protection system |
| CN102751711A (en) * | 2012-05-29 | 2012-10-24 | 浙江吉利汽车研究院有限公司杭州分公司 | Motor controller discharging safety device for hybrid electric vehicle |
| CN103683294A (en) * | 2012-09-21 | 2014-03-26 | 哈尔滨帕特尔科技股份有限公司 | Adjustable reactor type voltage regulating and stabilizing device |
| CN103683307A (en) * | 2012-09-21 | 2014-03-26 | 哈尔滨帕特尔科技股份有限公司 | New type series compensated line subsynchronous resonance damping and short-circuit current limiting device |
| CN103192777A (en) * | 2013-04-08 | 2013-07-10 | 富奥汽车零部件股份有限公司 | High-voltage control circuit of electric automobile |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425524A (en) * | 2017-06-28 | 2017-12-01 | 南京航空航天大学 | A kind of rectification suppression circuit for the specific higher hamonic wave of Traction networks |
| CN109617034A (en) * | 2018-08-23 | 2019-04-12 | 潘政强 | Uninterrupted power supply Intelligent over voltage protective device |
| ES2836000A1 (en) * | 2019-12-23 | 2021-06-23 | Fund Cener | CONTINUOUS INTENSITY ADJUSTMENT DEVICE FOR AN ELECTRIC ARC OVEN (Machine-translation by Google Translate, not legally binding) |
| WO2021130244A1 (en) * | 2019-12-23 | 2021-07-01 | Fundación Cener | Continuous current regulating device for an electric arc furnace |
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Application publication date: 20140910 |