CN202142980U - AC-DC transformation energy saving filtering low noise integration system - Google Patents
AC-DC transformation energy saving filtering low noise integration system Download PDFInfo
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- CN202142980U CN202142980U CN201120219085U CN201120219085U CN202142980U CN 202142980 U CN202142980 U CN 202142980U CN 201120219085 U CN201120219085 U CN 201120219085U CN 201120219085 U CN201120219085 U CN 201120219085U CN 202142980 U CN202142980 U CN 202142980U
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- 238000001914 filtration Methods 0.000 title claims abstract description 19
- 230000009466 transformation Effects 0.000 title abstract description 9
- 230000010354 integration Effects 0.000 title abstract 3
- 238000004804 winding Methods 0.000 claims abstract description 53
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 238000004134 energy conservation Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
Disclosed is an AC-DC transformation energy saving filtering low noise integration system, comprising an AC power supply, a rectification transformer, a rectifier, a DC load, and a tune-compensation apparatus, wherein a high voltage net side winding of the rectification transformer is connected with the AC power supply; a low voltage valve side winding of the rectification transformer is connected with the input end of the rectifier; the output end of the rectifier is connected with the DC load; the rectification transformer further comprises a shielding winding arranged between the high voltage net side winding and the low voltage valve side winding; and the shielding winding is connected with the tune-compensation apparatus. The AC-DC transformation energy saving filtering low noise integration system directly shields harmonic waves and is energy-saving and environment-friendly.
Description
Technical field
The utility model relates to the energy-conservation filtering low noise of a kind of ac-dc conversion integrated system; Belong to key technology and the equipment that to realize the conversion of efficient and environment-friendly type alternating current-direct current electric energy; Can be widely used in chemical industry, metallurgy, iron and steel etc. needs the industrial cousumer of alternating current-direct current electric energy conversion; Metro traction and power distribution network alternating current-direct current electric energy transformation system, and high pressure/super high voltage direct current electricity transmission current conversion station.
Background technology
Because the characteristic of electronic power rectification device, problem such as have all in the alternating current-direct current electric energy transformation system that harmonic pollution is serious, loss is big, operational efficiency is low, vibration and noise are big causes waste of energy to a certain degree.And harmonic current flows into grid side, and electrical network is also caused certain pollution, influences the safety and economic operation of electrical network, can cause protective relaying maloperation when serious, and contiguous communication system is formed interference.
The tradition solution mainly contains two kinds: a kind of is the scheme that adopts multiple rectifying, through increasing phase shifting transformer, perhaps at rectifier transformer primary side configuration phase shift winding, realizes multiple rectifying.Though this method can solve some above-mentioned problems to a certain extent, owing to increased phase shifting transformer or phase shift winding, make the transformer portion stock utilization reduce, the initial investment cost increases; Because multiple rectifying, the time decreased that makes electronic power conversion device (thyristor, controllable silicon, diode etc.) conducting in the work period has reduced capacity utilization; And multiple rectifying makes the electrical wiring of whole ac-dc conversion system become complicated, and a plurality of rectification units need co-ordination, and this has brought certain degree of difficulty to control, has reduced the ac-dc conversion reliability of system operation.Another kind method is to adopt harmonic wave to suppress and reactive power compensation technology; This can solve more above-mentioned problems equally to a certain extent; But generally be connected to grid side because filtering and merit are mended device, filter effect receives the influence of system impedance bigger, easy and system impedance generation series/parallel resonance; Cause the amplification of some subharmonic current, this can cause negative influence to the safety and economic operation of electrical network equally.Moreover, above-mentioned two kinds of methods all are that passive type ground solves harmonic wave and idle harmful effect to electrical network, but do not obtain any improvement as for harmonic wave and the idle harm that DC power station itself is brought.Non-linear harmonic wave that produces and idle free flow in alternating current-direct current electric energy transformation system master electric equipment owing to electronic power rectifier; This will certainly cause running wastage to a certain extent; Shortened the useful life of main equipment; And make the noise of whole alternating current-direct current electric energy transformation system increase, efficient reduces.
The utility model content
In order to solve problems such as the loss of alternating current-direct current electric energy transformation system is big, efficient is low, harmonic wave is big, noise is big, vibration is big; The utility model technical problem to be solved is to propose the energy-conservation filtering low noise of a kind of ac-dc conversion integrated system; The energy-conservation filtering low noise of this ac-dc conversion integrated system can effectively shield harmonic wave, plays the effect of energy-conserving and environment-protective.
The technical solution of the utility model is following:
The energy-conservation filtering low noise of a kind of ac-dc conversion integrated system; Comprise AC power, rectifier transformer, rectifier, DC load and tuning and merit benefit device; The High-Voltage Network side winding and the AC power of described rectifier transformer are joined; The low pressure valve side winding of rectifier transformer connects the input of rectifier; The output termination DC load of rectifier, rectifier transformer also comprise the shielding winding (being Filter Winding) that is arranged between High-Voltage Network side winding and the low pressure valve side winding, and the shielding winding connects tuning and merit is mended device.
Tuning and merit is mended device and is referred to filtering and reactive power compensator.
Between AC power and rectifier transformer, be in series with on-load tap-changing transformer, perhaps, the High-Voltage Network side winding of rectifier transformer is an on-load voltage regulation type winding.
Shielding winding (Filter Winding) is between rectifier transformer High-Voltage Network side winding and low pressure valve side winding, and shielding winding (Filter Winding) adopts delta connection, and High-Voltage Network side winding adopts star-star connection.
The energy-conservation filtering low noise of ac-dc conversion integrated system also comprises tuning and merit is mended device.
The rectifier trigger angle is in 7 °～10 ° scopes.
Tuning and merit is mended device and is made up of a plurality of filters.
Beneficial effect:
The utility model with realize system synthesis energy-conservation be target; Distribute alternating current-direct current electric energy transformation system key technology equipment rationally; Wherein, novel rectifying transformer adopting multiple secondary winding pattern is divided into High-Voltage Network side winding, shielding winding (being Filter Winding), low pressure valve side winding.The shielding winding is arranged between high pressure winding and the low pressure winding, and short-circuit impedance is very little or be approximately 0.Through connecting tuning and constant power factor device, realize the effective shielding of harmonic wave and the constant control of High Power Factor at the shielding winding; Valve side winding connects rectifier; Coordination control through rectifier transformer on-load voltage regulation and rectifier trigger angle; Realize the online adjusting and the control of direct current; And, in coordinating control procedure, guarantee that the trigger angle of rectifier is stabilized in 7 °～10 ° scopes, thereby realize the high efficiency optimized operation of direct current system.
The energy-conservation filtering low noise of the ac-dc conversion of the utility model integrated system can not only elevator system operational efficiency; And can realize the constant control of High Power Factor and good harmonic shielding; Reduce the electromagnetic noise of main electric equipment in the station, play the effect of energy-conserving and environment-protective.
The utility model is when improving the DC power station operational efficiency; Realize the constant control of High Power Factor; And the harmonic shielding that content is bigger is in the secondary side winding of novel rectifying transformer; Greatly reduce the harmonic loss of rectifier transformer, and by the caused noise and vibration of high fdrequency component.
Description of drawings
Fig. 1 is the overall structure figure of the energy-conservation filtering low noise of ac-dc conversion integrated system.
Label declaration: 1. AC power, 2. novel rectifying transformer, 3. rectifier, 4. DC load, 5. tuning and constant power factor control device are 6. tuningly mended device, 7. controlled reactor with merit.
Embodiment
Below will combine accompanying drawing and specific embodiment that the utility model is explained further details:
Embodiment 1:
Like Fig. 1, rectifier transformer adopts three winding construction patterns, and its High-Voltage Network side winding adopts star-star connection, the input end (being AC power) that gets access to grid or generate electricity, and its low pressure valve side winding output is connected with rectifier, constitutes 6 pulse waves or 12 pulse wave elementary cells.And its shielding winding (Filter Winding) adopts delta connection, is arranged between high pressure winding and the low pressure winding the tuning and constant power factor control device of output termination.The output of rectifier is connected with DC load.What specify is that the High-Voltage Network side winding of rectifier transformer need possess load tapchanging ability, perhaps; The on-load tap-changing transformer of between AC power and novel rectifying transformer, connecting; Its effect is guaranteeing the rectifier trigger angle in 7 °～10 ° scopes, through on-load voltage regulation, regulates novel rectifying transformer low voltage valve side output voltage; Thereby play under the prerequisite of guaranteeing the DC power-supply system high-efficiency operation, realize constant dc current current control within the specific limits.Tuning and merit in tuning and the constant power factor control device mends that device can [inductive filter be filter commonly used by the inductive filter with different structure type; For example LC, SVC filter etc.] form; Its effect is to the in addition tuning drainage of the main harmonic current that produced by rectifier; Make it and High-Voltage Network side Isolated Shield, and the reactive compensation capacity that tuning and merit are mended device designs by the reactive requirement of rectifier under the rated condition; By the idle distribution principle of minimum running wastage, be assigned to tuning tuning the benefit in the device of each time of mending in the device and go again with merit with merit.The exportable dynamically continuous inductive reactive power compensation amount of controlled reactor; Its effect is under off rating; If tuning reactive power compensation with merit benefit device measures existing the mistake and mends; Then pass through controlled reactor this part excessive reactive compensation capacity of dynamic equilibrium within the specific limits, play the purpose of constant power factor control.
Claims (6)
1. the energy-conservation filtering low noise of ac-dc conversion integrated system; It is characterized in that; Comprise AC power, rectifier transformer, rectifier, DC load and tuning and merit benefit device; The High-Voltage Network side winding and the AC power of described rectifier transformer are joined, and the low pressure valve side winding of rectifier transformer connects the input of rectifier, the output termination DC load of rectifier; Rectifier transformer also comprises the shielding winding that is arranged between High-Voltage Network side winding and the low pressure valve side winding, and the shielding winding connects tuning and merit is mended device.
2. the energy-conservation filtering low noise of ac-dc conversion according to claim 1 integrated system is characterized in that, between AC power and rectifier transformer, being in series with on-load tap-changing transformer or High-Voltage Network side winding is on-load voltage regulation type winding.
3. the energy-conservation filtering low noise of ac-dc conversion according to claim 1 integrated system is characterized in that, the shielding winding adopts delta connection, and High-Voltage Network side winding adopts star-star connection.
4. the energy-conservation filtering low noise of ac-dc conversion according to claim 1 integrated system is characterized in that, also comprises tuning merit benefit device.
5. the energy-conservation filtering low noise of ac-dc conversion according to claim 1 integrated system is characterized in that the rectifier trigger angle is in 7 °～10 ° scopes.
6. according to the energy-conservation filtering low noise of each described ac-dc conversion of claim 1-5 integrated system, it is characterized in that tuning and merit is mended device and is made up of a plurality of filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120219085U CN202142980U (en) | 2011-06-27 | 2011-06-27 | AC-DC transformation energy saving filtering low noise integration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120219085U CN202142980U (en) | 2011-06-27 | 2011-06-27 | AC-DC transformation energy saving filtering low noise integration system |
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| CN202142980U true CN202142980U (en) | 2012-02-08 |
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| CN201120219085U Expired - Lifetime CN202142980U (en) | 2011-06-27 | 2011-06-27 | AC-DC transformation energy saving filtering low noise integration system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629763A (en) * | 2012-03-07 | 2012-08-08 | 江西变压器科技股份有限公司 | Low-voltage side filter compensation energy-saving rectification transformer |
| CN112329286A (en) * | 2020-10-20 | 2021-02-05 | 中国矿业大学 | Novel induction filtering transformer structure applied to low-voltage power distribution network |
| CN113011004A (en) * | 2021-02-24 | 2021-06-22 | 南京地铁建设有限责任公司 | Security check method, device and storage medium |
-
2011
- 2011-06-27 CN CN201120219085U patent/CN202142980U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629763A (en) * | 2012-03-07 | 2012-08-08 | 江西变压器科技股份有限公司 | Low-voltage side filter compensation energy-saving rectification transformer |
| CN102629763B (en) * | 2012-03-07 | 2014-10-22 | 江西变压器科技股份有限公司 | Low-voltage side filter compensation energy-saving rectification transformer |
| CN112329286A (en) * | 2020-10-20 | 2021-02-05 | 中国矿业大学 | Novel induction filtering transformer structure applied to low-voltage power distribution network |
| CN112329286B (en) * | 2020-10-20 | 2024-02-13 | 中国矿业大学 | Novel induction filtering transformer structure applied to low-voltage distribution network |
| CN113011004A (en) * | 2021-02-24 | 2021-06-22 | 南京地铁建设有限责任公司 | Security check method, device and storage medium |
| CN113011004B (en) * | 2021-02-24 | 2024-03-15 | 南京地铁建设有限责任公司 | Security check method, device and storage medium |
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| TR01 | Transfer of patent right |
Effective date of registration: 20170824 Address after: 410013 Hunan province Changsha high-tech development zone Lusong Lu Valley Road No. 456 Patentee after: HUNAN HUADA UNISPLENDOUR TECHNIC CORPORATION LIMITED Address before: 410007 Hunan province Changsha city Changsha Lugu high tech Zone of Hunan University Science Park Patentee before: Hunan Huada Electrician Hi-Tech Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120208 |
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| CX01 | Expiry of patent term |