CN104767200A - Power frequency adjusting system of continuous casting furnace - Google Patents
Power frequency adjusting system of continuous casting furnace Download PDFInfo
- Publication number
- CN104767200A CN104767200A CN201510209280.1A CN201510209280A CN104767200A CN 104767200 A CN104767200 A CN 104767200A CN 201510209280 A CN201510209280 A CN 201510209280A CN 104767200 A CN104767200 A CN 104767200A
- Authority
- CN
- China
- Prior art keywords
- continuous casting
- casting furnace
- unit
- power frequency
- capacitor unit
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a power frequency adjusting system of a continuous casting furnace. A power supply bus bar of the continuous casting furnace is connected with a compensating capacitor unit and a balance capacitor unit which are provided with fling-cut switches. Input circuits of the compensation capacitor unit and the balance capacitor unit are provided with normally-closed relays, and the control ends of the normally-closed relays are connected with an automatic adjusting unit. The power frequency adjusting system has the advantages that the control mode of an old furnace is optimized, two adjusting modes are provided, it can be conveniently kept that the continuous casting furnace is in the optimal working state, manual control can be achieved through adjustment, the continuous casting furnace is conveniently adjusted according to needs, and it is avoided that the continuous casting furnace cannot be used due to the fault of the automatic control unit.
Description
Technical field
The present invention relates to continuous casting furnace field, particularly relating to the system for regulating continuous casting furnace power frequency.
Background technology
The transformer worked under the operation principle of commercial frequency cored induction furnace is equivalent to short-circuit condition, hot-wire coil is equivalent to the primary winding of transformer, its channel is equivalent to the secondary coil of transformer, and when after primary winding energising, continuous casting furnace electric control part is divided and comprised high voltage isolator, primary cut-out, many tapped transformers, contactor, starting resistance, balanced capacitor, variable balanced capacitor, interphase reactor, power-factor compensator, compensated variable capacitance device and line-frequency induction winding.
Metal in channel is owing to producing very large induced current and by heat fused, and because thermometal in channel is different with cold metal proportion in burner hearth, and the impact of electrokinetic phenomena, molten metal inflow burner hearth also brings heat that cold burden is melted.Rated power 400kW, the inductor number of phases is single-phase, consider the control of fail safe and the balance electrically used, and larger power also just limits the requirement to electricity usage, does not allow to use single-phase or two-phase to power, must adopt three phase supply.Meanwhile, lower for its power factor power frequency induction furnace, the power factor of general channel induction furnace, all lower than about 0.4, needs interphase reactor and building-out capacitor to compensate.In addition, thus in the process of induction furnace operation, the difference of melt-processed material material and physical parameter thereof vary with temperature very large, all can cause the change of induction coil electric parameter.
In order to reduce line drop and loss, energy savings, make induction furnace economical rationality, run safely, must regulating power factor and power network current at any time. the adjustment of these two parameters is mostly manually carried out at present, namely according to the current power factor table regulating power factor compensation on operating desk, three-phase equilibrium is regulated according to three-phase current table. owing to needing frequent operation in fusion process, and operating personnel because of qualification, intensity all variant, therefore be difficult to make stove economical, rationally, run under optimum state.Also have and use automatic adjustment unit regulating power factor and power network current at any time, but when automatic adjustment unit breaks down, then need stop production to overhaul.
Summary of the invention
Technical problem to be solved by this invention realizes the system that a kind of structure is simple, be easy to the repacking of old stove, can improve continuous casting furnace power frequency adjustment reliability and fail safe.
To achieve these goals, the technical solution used in the present invention is: a kind of continuous casting furnace power frequency regulating system, the power supply busbar of continuous casting furnace has access to compensation condenser unit and balance capacitor unit, described compensation condenser unit and balance capacitor unit are equipped with fling-cut switch, the input circuit of described compensation condenser unit and balance capacitor unit is provided with normally closed relay, the control end access automatic adjustment unit of described normally closed relay.
Described automatic adjustment unit is provided with Acquisition Circuit, and described Acquisition Circuit gathers electric current, voltage and power factor on in-furnace temperature and power supply busbar.
Described Acquisition Circuit exports collection signal to display.
Advantage of the present invention optimizes old stove control mode, provide two kinds of shaping modes, continuous casting furnace can be kept easily to be in best operating state, and can Non-follow control be adjusted to, conveniently regulate continuous casting furnace as required, and avoid automatic control unit fault and cannot continuous casting furnace be used.
Accompanying drawing explanation
Below the content that width accompanying drawing every in specification of the present invention is expressed is briefly described:
Fig. 1 is continuous casting furnace power frequency regulating system structural representation;
Fig. 2 is automatic adjustment unit structural representation.
Embodiment
As shown in Figure 1, the continuous casting furnace of continuous casting furnace power frequency regulating system is powered on busbar and is had access to compensation condenser unit and balance capacitor unit, compensation condenser unit and balance capacitor unit are equipped with fling-cut switch, manual switchover function can be ensured like this, simultaneously, the input circuit of compensation condenser unit and balance capacitor unit is provided with normally closed relay, control end access automatic adjustment unit (existing equipment) of normally closed relay, when such normally closed relay can ensure that automatic adjustment unit breaks down, manual switching switch normally can carry out switching work, automatic adjustment unit also can control normally closed relay and cut-off road, control capacitance automatic switching.
Automatic adjustment unit is provided with Acquisition Circuit, it gathers electric current, voltage and the power factor on in-furnace temperature and power supply busbar for Acquisition Circuit, automatic adjustment unit regulates the quantity of switched capacitor automatically by gathering these parameters, thus regulates temperature and the voltage of power frequency induction furnace.Acquisition Circuit exports collection signal to display simultaneously, and when facilitating manual adjustments, staff observes Parameters variation.
The temperature of power frequency induction furnace controls by the present invention, voltage-regulation changes automatic and manual two kinds of control modes into, during manual operation, operator regulates building-out capacitor amount according to the aobvious increase and decrease of the tables such as the voltage parameter power factor meter of adjustment in real time, because stove impedance changes with heating-up temperature, electric parameter also becomes at any time, so in real process automatic regulating system at any time as required, to reach optimal operational condition.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (3)
1. a continuous casting furnace power frequency regulating system, the power supply busbar of continuous casting furnace has access to compensation condenser unit and balance capacitor unit, described compensation condenser unit and balance capacitor unit are equipped with fling-cut switch, it is characterized in that: the input circuit of described compensation condenser unit and balance capacitor unit is provided with normally closed relay, the control end access automatic adjustment unit of described normally closed relay.
2. continuous casting furnace power frequency regulating system according to claim 1, is characterized in that: described automatic adjustment unit is provided with Acquisition Circuit, and described Acquisition Circuit gathers electric current, voltage and power factor on in-furnace temperature and power supply busbar.
3. continuous casting furnace power frequency regulating system according to claim 2, is characterized in that: described Acquisition Circuit exports collection signal to display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209280.1A CN104767200A (en) | 2015-04-28 | 2015-04-28 | Power frequency adjusting system of continuous casting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209280.1A CN104767200A (en) | 2015-04-28 | 2015-04-28 | Power frequency adjusting system of continuous casting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104767200A true CN104767200A (en) | 2015-07-08 |
Family
ID=53648894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510209280.1A Pending CN104767200A (en) | 2015-04-28 | 2015-04-28 | Power frequency adjusting system of continuous casting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104767200A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668447A (en) * | 2018-12-26 | 2019-04-23 | 河北四通新型金属材料股份有限公司 | A kind of main frequency furnace power factor balance automatic regulating apparatus |
| CN113188339A (en) * | 2021-05-28 | 2021-07-30 | 赣州科帕机电自动化有限公司 | Kiln operation equipment control system |
-
2015
- 2015-04-28 CN CN201510209280.1A patent/CN104767200A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668447A (en) * | 2018-12-26 | 2019-04-23 | 河北四通新型金属材料股份有限公司 | A kind of main frequency furnace power factor balance automatic regulating apparatus |
| CN113188339A (en) * | 2021-05-28 | 2021-07-30 | 赣州科帕机电自动化有限公司 | Kiln operation equipment control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6657327B2 (en) | Series conversion voltage transformer | |
| EP2324550B1 (en) | Power supply arrangement for direct electrical heating of a pipeline system | |
| EP2942796B1 (en) | Voltage control system | |
| JP6599272B2 (en) | Static reactive power compensator and operation method thereof | |
| CN204205598U (en) | System saving electricity optimizes the automatic regulation voltage pressure stabilizing device of electric energy and equipment group thereof | |
| CN104767200A (en) | Power frequency adjusting system of continuous casting furnace | |
| CN208509304U (en) | Timesharing exports induction heating power | |
| CN106057452A (en) | Transformer capable of increasing impedance | |
| Ko et al. | Energy efficiency improvement of a single-phase ac spot welding machine by using an advanced thyristor switched detuning capacitor bank | |
| CN210490480U (en) | Residual work recovery and reactive power compensation device | |
| CN211266482U (en) | Three-phase reactor excitation on-load voltage regulation system | |
| CN205248811U (en) | Avoid drawing compensation arrangement on post of arc | |
| CN220606117U (en) | Intermediate frequency capacitor switching device and intermediate frequency induction heating system | |
| CN116317638B (en) | Power supply device and graphitization processing system | |
| WO2021000610A1 (en) | Voltage balancing and stabilizing apparatus and method | |
| CN201360225Y (en) | Variable frequency power supply device for core-type induction furnace | |
| CN202696521U (en) | Bypass compensated motor starting controller | |
| CN204668956U (en) | A kind of electric reactive compensating switching device | |
| CN204131130U (en) | A kind of battery saving arrangement based on intelligent AC electrical network | |
| CN203491700U (en) | Intelligent integrated power capacitor | |
| CN109921428B (en) | Three-phase reactor excitation on-load voltage regulating system | |
| CN202059177U (en) | Secondary principle wiring circuit structure of capacitor compensation deputy cabinet | |
| CN205319709U (en) | Novel automatic reactive compensation controller on post | |
| CN207677445U (en) | A kind of controllable reactor | |
| RU102435U1 (en) | TRANSFORMER VOLTAGE CONTROL DEVICE |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150708 |