CN201937266U - Complete equipment dedicated for blast furnace filter compensation - Google Patents
Complete equipment dedicated for blast furnace filter compensation Download PDFInfo
- Publication number
- CN201937266U CN201937266U CN2010206193787U CN201020619378U CN201937266U CN 201937266 U CN201937266 U CN 201937266U CN 2010206193787 U CN2010206193787 U CN 2010206193787U CN 201020619378 U CN201020619378 U CN 201020619378U CN 201937266 U CN201937266 U CN 201937266U
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- CN
- China
- Prior art keywords
- blast furnace
- filter branch
- filter
- controller
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
Abstract
The utility model relates to complete equipment dedicated for blast furnace filter compensation, which comprises a filter branch, and is characterized in that the filter branch is a third harmonic filter branch, the filter branch is connected into a furnace transformer low-voltage side bus, the filter branch sequentially comprises an isolation switch and a triangular loop, the triangular loop comprises three single-phase units which are connected by a triangular, each unit is formed by a capacitor, a thyristor valve and a reactor which are sequentially connected in series, an arrester is arranged between the isolation switch and the triangular loop, the thyristor valves are electrically connected with one end of a controller, the other end of the controller is electrically connected with a furnace transformer three-phase bus, and each thyristor valve is formed by two thyristors which are connected in antiparallel. Compared with the prior art, the complete equipment dedicated for blast furnace filter compensation has the beneficial effects that as a blast furnace mainly produces third harmonic, a third filter channel is design to reach the purpose of eliminating the third harmonic.
Description
Technical field
The utility model belongs to electric and electronic technical field, is specifically related to a kind of blast furnace filtering compensation isolated plant.
Background technology
It is characteristics such as inductive load, load impact are big, a braking is frequent, rapidity, automaticity height, the continuity of working that the power consumption equipment of iron and steel enterprise has capacity big, most of, be the rich and influential family of electricity consumption, power consumption equipment uses nonlinear loads such as DC motor and current transformer driving, frequency conversion and speed regulation of AC motor driving, transformer, reactor, power electronic equipment in a large number.Steelmaking equipments such as image height stove, converter make line voltage that fluctuation and flickering take place, three-phase imbalance, and power factor of electric network is low, line loss increases, harmonic content exceeds standard, and has caused the harmonic wave public hazards, the safe operation of serious harm electric power system and the safety and economic operation of electric equipment.Therefore, resolve the reactive power compensation of electric power system and harmonic wave governing problem for guaranteeing electric power quality and safe operation, reducing the wastage, improve power consumption equipment and exert oneself etc. significant.Power factor, voltage distortion rate, current distortion rate, the load of electrical networks at different levels have all been formulated related standards to the harmonic content that electric power system injects both at home and abroad.At steel industry, obtained common attention and attention for the reactive power compensation and the harmonic wave control of electrical network, taked the countermeasure of control combination.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of reliability height, energy-conservation and blast furnace filtering compensation isolated plant that the harmonic filtration rate is high are provided.
In order to solve the problems of the technologies described above, the utility model by the following technical solutions:
A kind of blast furnace filtering compensation special complete device, comprise filter branch, it is characterized in that: described filter branch is 3 subharmonic filter branch, filter branch inserts the furnace transformer low-pressure side bus, described filter branch is made of successively isolating switch and triangle loop, the triangle loop is made of three single-phase unit that triangle connects, each unit is by capacitor, thyristor valve and reactor are in series successively, be provided with a lightning arrester between described isolating switch and the triangle loop, described thyristor valve all is electrically connected with an end of a controller, and the other end of described controller is electrically connected with the furnace transformer three-phase bus.
Described thyristor valve is made of two thyristor inverse parallels.
Described thyristor adopts the IXYS element of Germany.
Described capacitor is selected the filtering capacitor of the full film medium of metal for use,
Described reactor is a dry type iron core filter reactor.
The utility model compared with prior art has following beneficial effect: because blast furnace mainly produces 3 subharmonic, design 3 filtering channels and reach the purpose of eliminating 3 subharmonic, after certain steel mill drops into this device, make power factor reach 0.95, each harmonic is suppressed in the GB setting by 0.75; Active power drops to 13644kW by 15804kW, has fallen 13.6%; Steel consumption per ton is reduced to 145kWh by 167kWh, 5 800 ten thousand kWh that can economize on electricity in year, 3,140,000 yuan of year saving electricity charge, recoverable investment in a year.Certain beam-and-rail factory, cut greatly and after left and right sides manipulator dropped into this compensation arrangement, make harmonic content in the value of GB regulation, power factor brings up to 0.95 by 0.57, can reduce 890,000 yuan of fine every year, also rewards 2000 yuan in every month, reduced the active loss of change distribution, the primary current of rectifier transformer is reduced to 15A by 117A, 54.32 ten thousand yuan of year economize on electricitys, and a year direct economic benefit is 143.677 ten thousand yuan.
Description of drawings
Fig. 1 is a circuit structure diagram of the present utility model.
Embodiment
Referring to Fig. 1, a kind of blast furnace filtering compensation special complete device, comprise filter branch, filter branch is 3 subharmonic filter branch, filter branch inserts the furnace transformer low-pressure side bus, filter branch is made of successively isolating switch 1 and triangle loop, the triangle loop is made of three single-phase unit that triangle connects, each unit is by capacitor 2, thyristor valve 3 ' and reactor 4 are in series successively, be provided with a lightning arrester 5 between isolating switch 1 and the triangle loop, thyristor valve 3 ' all is electrically connected with an end of a controller 6, and the other end of described controller 6 is electrically connected with the furnace transformer three-phase bus.
Thyristor valve 3 ' is made of two thyristor 3 inverse parallels, thyristor 3 adopts the IXYS element of Germany, reactor 4 is a dry type iron core filter reactor, capacitor 2 is selected the filtering capacitor of the full film medium of metal for use, can adopt AFM type filtering capacitor, adopt metalized film, the built-in explosion-protection equipment of the insulating oil of vacuum impregnation high-quality, safe and reliable, current overload ability 〉=1.5In.Capacitor long-time running under 1.1 times rated voltage, 1.3 times rated current,
Controller 6 is controlled thyristor valve according to the current and voltage signals of gathering, controller 5 adopts 32 ARM microprocessor chips, its structure of controller mainly comprises: power circuit, display circuit, key circuit, the electrical measurement circuit, sample circuit and CPU, by power circuit to each other circuit supplies, the electrical measurement circuit is connected with sample circuit and CPU, sample circuit is used to gather the current and voltage signals of transformer, and send conversion of signals to the electrical measurement circuit, the signal that the electrical measurement circuit is sent sample circuit here is handled, carry out the transmitted in both directions that signal is finished in communication with CPU, the cpu monitor operating state, the signal that the electrical measurement circuit is sent here is analyzed, logic determines, calculate, with the operating state of control device.The electrical measurement circuit adopts the special-purpose electric energy measure chip of the ADE7758 model of U.S. ANOLOG DEVICE company production.Controller function is complete easy to operate, and autoalarm is arranged, and every defencive functions such as overvoltage, overcurrent, ultraharmonics are arranged, and guarantees that the product all operations uses monitoring controlling in-house operation.Operation of equipment is convenient, and safe and reliable, specifically, controller also can be selected some general purpose controllers on the market for use, such as: the controller of the JKGF series that s7-200 Programmable Logic Controller that Siemens Company produces or Hua Guan company produce.
Controller adopts the reaction type monitoring, real-time reactive power with load is the switching physical quantity, in 20ms, finish signal data acquisition, calculating, control output, fling-cut switch is finished the zero current input, the switching no-flashy-flow after receiving the switching instruction in less than 10ms, electrical network there is not impact, the capacitor input adopts the precharge technology, has avoided the impact of switched capacitor, makes operation stable more, safe, reliable.For guaranteeing the real-time tracking switching, the whole system response time can be satisfied the needs of quick varying duty less than 30ms, realizes compensation fast.
Claims (5)
1. blast furnace filtering compensation special complete device, comprise filter branch, it is characterized in that: described filter branch is 3 subharmonic filter branch, filter branch inserts the furnace transformer low-pressure side bus, described filter branch is made of successively isolating switch (1) and triangle loop, the triangle loop is made of three single-phase unit that triangle connects, each unit is by capacitor (2), thyristor valve (3 ') and reactor (4) are in series successively, be provided with a lightning arrester (5) between described isolating switch (1) and the triangle loop, described thyristor valve (3 ') all is electrically connected with an end of a controller (6), and the other end of described controller (6) is electrically connected with the furnace transformer three-phase bus.
2. a kind of blast furnace filtering compensation special complete device according to claim 1 is characterized in that: described thyristor valve (3 ') is made of two thyristors (3) inverse parallel.
3. a kind of blast furnace filtering compensation special complete device according to claim 2 is characterized in that: described thyristor (3) adopts the IXYS element of Germany.
4. a kind of blast furnace filtering compensation special complete device according to claim 1 and 2, it is characterized in that: described capacitor (2) is selected the filtering capacitor of the full film medium of metal for use.
5. a kind of blast furnace filtering compensation special complete device according to claim 1 and 2, it is characterized in that: described reactor (4) is a dry type iron core filter reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206193787U CN201937266U (en) | 2010-11-22 | 2010-11-22 | Complete equipment dedicated for blast furnace filter compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206193787U CN201937266U (en) | 2010-11-22 | 2010-11-22 | Complete equipment dedicated for blast furnace filter compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201937266U true CN201937266U (en) | 2011-08-17 |
Family
ID=44448775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206193787U Expired - Fee Related CN201937266U (en) | 2010-11-22 | 2010-11-22 | Complete equipment dedicated for blast furnace filter compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201937266U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924830A (en) * | 2021-03-04 | 2021-06-08 | 国网山西省电力公司电力科学研究院 | Transformer three-phase partial discharge simultaneous pressurization test device and test method based on single-phase variable frequency power supply |
-
2010
- 2010-11-22 CN CN2010206193787U patent/CN201937266U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924830A (en) * | 2021-03-04 | 2021-06-08 | 国网山西省电力公司电力科学研究院 | Transformer three-phase partial discharge simultaneous pressurization test device and test method based on single-phase variable frequency power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110817 Termination date: 20131122 |