CN101783515A - Submerged arc furnace secondary reactive compensation control system and method - Google Patents
Submerged arc furnace secondary reactive compensation control system and method Download PDFInfo
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- CN101783515A CN101783515A CN201010300425A CN201010300425A CN101783515A CN 101783515 A CN101783515 A CN 101783515A CN 201010300425 A CN201010300425 A CN 201010300425A CN 201010300425 A CN201010300425 A CN 201010300425A CN 101783515 A CN101783515 A CN 101783515A
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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
Abstract
The invention relates to the field of reactive compensation of smelting submerged arc furnace and provides a submerged arc furnace secondary reactive compensation control system and a submerged arc furnace secondary reactive compensation control method. The method and the device are characterized in that: the submerged arc furnace secondary reactive compensation control system comprises a main control computer, a display, input equipment, two conversion interfaces, two intelligent power transducers, a primary side voltage transformer, a primary side current transformer, a secondary side voltage transformer, a secondary side current transformer, a programmable controller, a temperature transmitter, a compensating device, an alarm device, a standard transmission interface and a power supply system; and the switching control method comprises sixteen steps to fulfill the aims of improving power factors, improving actual output rate of a transformer of the submerged arc furnace, reducing the energy consumption, reducing the three-phase imbalance degree, increasing the output, improving automation and enhancing a human-computer interaction function.
Description
Technical field
The present invention relates to smelt the reactive power compensation field with the hot stove in ore deposit, realize the hot furnace operating state monitoring of three-phase inequality switching cycle and ore deposit of submerged arc furnace secondary reactive compensation device, is a kind of submerged arc furnace secondary reactive compensation control system and control method.
Background technology
The electrical system of the hot stove in ore deposit mainly is made up of high voltage supply network, furnace transformer, compensator, short net, water-cooling system, electrode system, burner hearth and control system, its load characteristic between resistive and perceptual between, the short net of low-voltage and high-current and the structure and the work characteristics of water-cooling system, the natural power factor of the hot stove in decision ore deposit is difficult to reach more than 0.85, so just need carry out reactive power compensation to supply line, with power factor is brought up to national regulation 0.90 or more than, to reach the purpose of balance electric network reactive-load.Present power supply department and ferroalloy enterprise more options high pressure compensation, this compensation way is that capacitor is parallel on the three-phase bus of high pressure primary side, its investment is little, but can not adapt to load variations in the stove production process, overcompensation or undercompensation phenomenon can appear, also do not have simultaneously the effect of energy-saving and production-increase, control method is manual control.And more satisfactory be to carry out reactive power compensation in the ore furnace secondary side, the loop stream mistake that secondary reactive compensation can make a large amount of reactive currents directly form through special-purpose secondary capacitor and electric arc, and no longer through short net, transformer and power supply network before the compensation point, when improving power factor, also can improve transformer and exert oneself, reduce the wastage.At present the submerged arc furnace secondary reactive compensation control system mostly is with power factor controller or PLC control, and the image data amount is few, and control precision is not high, and control mode is single, and the time have overcompensation or undercompensation phenomenon to occur, do not reach best compensation effect.
Summary of the invention
Purpose of the present invention just provides a kind of submerged arc furnace secondary reactive compensation control system and the control method that can finish appointed task in complex environment and guarantee the overall system performance optimum, improves power factor to reach, strengthens the effective output rating of ore heat furnace transformer, reduces the wastage, reduces tri-phase unbalance factor, increases output, improves automaticity and strengthens the purpose of human-computer interaction function.
For achieving the above object, technical solution of the present invention is: design a kind of submerged arc furnace secondary reactive compensation control system, it is characterized in that: comprise main control computer, display, input equipment, two translation interfaces, two intelligent electric power transmitters, primary side voltage transformer, primary side current instrument transformer, secondary side voltage transformer, secondary side current instrument transformer, Programmable Logic Controller, temperature transmitter, compensation arrangement, warning device and transmission standard interface and power-supply systems; Wherein,
Main control computer is electrically connected with display and input equipment, and main control computer is electrically connected with the transmission standard interface by two translation interfaces, connects intelligent electric power transmitter and Programmable Logic Controller respectively by the transmission standard interface;
A port of one of two intelligent electric power transmitters is electrically connected by the transmission standard interface, and port is electrically connected primary side voltage transformer and primary side current instrument transformer respectively in addition; A port of another of two intelligent electric power transmitters is electrically connected by the transmission standard interface, and port is electrically connected secondary side voltage transformer and secondary side current instrument transformer respectively in addition;
Programmable Logic Controller PLC connects and connects compensation arrangement C, warning device AL and temperature transmitter T respectively, is responsible for switching, the reception of alarm signal and the reception and the execution of transmission and temperature protection signal of control compensation device C;
The primary side voltage transformer links to each other with power transducer respectively with secondary side current instrument transformer, voltage transformer summation current transformer with primary side current instrument transformer and secondary side voltage transformer, be used for to main control computer provide ore heat furnace transformer once with the secondary low-voltage side data, and these data are handled, analyze, judge, are stored and reconstitute control command by main control computer and control corresponding compensation arrangement.
Described main control computer is handled, analyzes, judges, is stored these data and reconstitute control command and controls corresponding compensation and comprise the steps:
1) after the user moved main program, initialization subroutine (S101) at first called in system.
2) judge ore heat furnace transformer primary side voltage whether normally (S102) then.
3), then judge ore heat furnace transformer primary side current whether normally (S103) if ore heat furnace transformer primary side voltage is normal; Otherwise excision electric capacity and report to the police (S106).
4) whether normally above-mentioned judged result (S103) if the ore heat furnace transformer primary side current is normal, then judges ore heat furnace transformer secondary side voltage (S104); Otherwise excision electric capacity and report to the police (S106).
5) whether normally above-mentioned judged result (S104) if ore heat furnace transformer secondary side voltage is normal, then judges short net of ore heat furnace transformer secondary side and capacitor temperature (S105); Otherwise excision electric capacity and report to the police (S106).
6) above-mentioned judged result (S105) if short net of ore heat furnace transformer secondary side and capacitor temperature are normal, then judges whether automatic operation (S108); Otherwise excision electric capacity and report to the police (S106).
7) then to excision electric capacity and warning (S106), whether judging reports to the police recovers normal (S107).
8) above-mentioned judged result (S107) if system alarm does not reset, then reverts to above-mentioned steps (S102); If system alarm resets, then continue to carry out (S108).
9) above-mentioned judged result (S108) if system controls automatically, is called switching subprogram (S109), otherwise finishes.
Described switching control method comprises the steps:
1) enter the switching subprogram after, at first judge whether anxious stop (S201).
2) above-mentioned judged result (S201) is if urgency is stopped then return; Otherwise judge power factor whether low (S202).
3) above-mentioned judged result (S202) if power factor is low, judges then whether this low phase of power factor throws full (S203).
4) above-mentioned judged result (S203) expires if thrown, and then returns; Otherwise judge whether drop into time-delay arrives (S204).
5) above-mentioned judged result (S204) does not arrive if drop into time-delay, then returns; Otherwise drop into capacitor (S205) in proper order.
6) then, revert to above-mentioned steps (S203).
7) follow above-mentioned judged result (S202),, then judge power factor whether high (S206) if power factor is not low.
8) above-mentioned judged result (S206) is if the power factor height judges then whether this high phase of power factor has excised finish (S207).
9) above-mentioned judged result (S207) if excision finishes, is then returned; If excision does not finish, judge then whether the excision time-delay arrives (S208).
10) above-mentioned judged result (S208) if the excision time-delay is not arrived, is then returned; If the excision time-delay is arrived, then excise capacitor (S209) in proper order.
11) then, revert to above-mentioned steps (S207).
12) follow above-mentioned judged result (S206),, then judge whether balance (S210) of active power if power factor is not high.
13) above-mentioned judged result (S210) is if balance is then returned; If uneven, judge then whether of active power minimum has thrown full (S211) mutually.
14) above-mentioned judged result (S211) expires if thrown, then returns; Do not expire if throw, otherwise judge whether drop into time-delay arrives (S212).
15) above-mentioned judged result (S212) does not arrive if drop into time-delay, then returns; Otherwise drop into capacitor (S213) in proper order.
16) then, revert to above-mentioned steps (S210).
Characteristics of the present invention and effect have:
1. adopt two intelligent electric power transmitter P1 and P2 to gather respectively in real time the electric parameter of the short net of ore heat furnace transformer primary side and secondary, make that information is comprehensive, parameter is complete, control provides the hardware assurance for main control computer PC implements accurately.
2. main control computer PC is powerful, is responsible for finishing tasks such as data processing and storage, algorithm are implemented, control output, adopts high-level programming language to realize that the multithreading task handles, for the walking abreast of each modular system, co-ordination provide the software assurance.
3. adopt the RS485 bus to connect each control module, data and information sharing when having guaranteed The whole control system work also provide and have made things convenient for approach for adding new control module.
4. control system is done host computer with main control computer PC, Programmable Logic Controller PLC does slave computer, and host computer PC is given an order to slave computer PLC, makes PLC carry out decentralized control, by the monitoring of host computer, availablely realize the automatically-monitored of process of factory production easily to PLC.
5. display D provides the graphical interaction interface, and input equipment KM provides the interactive operation of operating personnel H and control system, includes the people in closed-loop control system simultaneously, the operating state and the treatment system abnormal conditions that be responsible for assigning control command, monitor the hot stove in ore deposit.
Description of drawings
With reference to the accompanying drawings one step of embodiment of the invention work is described in detail as follows:
Fig. 1 is a submerged arc furnace secondary reactive compensation system block diagram of the present invention;
Fig. 2 is a submerged arc furnace secondary reactive compensation of the present invention system main program flow chart;
Fig. 3 is the switching subroutine flow chart of Fig. 2.
Embodiment
As shown in Figure 1, control system also comprises main control computer PC, display D, input equipment KM (keyboard, mouse), two translation interface RS1 and RS2, two intelligent electric power transmitter P1 and P2, primary side voltage transformer V1, primary side current instrument transformer A1, secondary side voltage transformer V2, secondary side current instrument transformer A2, Programmable Logic Controller PLC, temperature transmitter T, compensation arrangement C, warning device AL and asynchronous transmission standard interface RS232 except that power-supply system PS.Main control computer PC is electrically connected with display D and input equipment KM (keyboard, mouse), main control computer PC is electrically connected with RS485 or RS232 transmission standard interface by two translation interface RS1 and RS2, connects intelligent electric power transmitter P1, P2 and Programmable Logic Controller PLC respectively by RS485 or RS232 transmission standard interface; The port of intelligent electric power transmitter P1 is electrically connected by the transmission standard interface, and the other port of intelligent electric power transmitter P1 is electrically connected primary side voltage transformer V1 and primary side current instrument transformer A1 respectively; The port of intelligent electric power transmitter P2 is electrically connected by the transmission standard interface, and port is electrically connected secondary side voltage transformer V2 and secondary side current instrument transformer A2 respectively in addition; Programmable Logic Controller PLC connects and connects compensation arrangement C, warning device AL and temperature transmitter T respectively, is responsible for switching, the reception of alarm signal and the reception and the execution of transmission and temperature protection signal of control compensation device C; The primary side voltage transformer links to each other with power transducer respectively with secondary side current instrument transformer, voltage transformer summation current transformer with primary side current instrument transformer and secondary side voltage transformer.
1) main control computer PC is the core that guarantees the control system performance, is responsible for tasks such as real-time detection, numerical computations, information processing, algorithm realization, process control.Simultaneously,, control the data acquisition of two intelligent electric power transmitter P1 and P2, handle control compensation device C, and realize that the signal of warning device A sends and controlling alarm by Programmable Logic Controller PLC by the RS232 interface.
2) display D links to each other with main control computer PC, is the interactive interface of operating personnel H and control system, is responsible for parameter setting, data demonstration, compensation arrangement and work such as demonstration of power transducer operating state and the indication of switching capacity.
3) input equipment KM links to each other with main control computer PC, is the interactive means of operating personnel H and control system, is responsible for work such as parameter input, picture location, system operation and manual switching.
4) voltage transformer V1 and V2 link to each other with P2 with power transducer P1 respectively, are responsible for the detection of primary side and secondary side voltage signal, and output signal to power transducer P1 and P2.
5) current transformer A1 and A2 link to each other with P2 with power transducer P1 respectively, are responsible for the detection of primary side and secondary side current signal, and output signal to power transducer P1 and P2.
6) power transducer P1 and P2 are responsible for data acquisition, processing and the storage of voltage transformer V1 and V2, current transformer A1 and A2, and data are sent to main control computer PC by translation interface RS1 and RS2.
7) translation interface RS1 and RS2, be responsible for the communication of power transducer P1 and P2 and Programmable Logic Controller PLC and main control computer PC respectively, realize that single-ended RS-232 signal is to the RS-422 of balanced differential or the conversion of RS-485 signal, the isolation voltage of 2500V is provided, effectively suppress surge, thunderbolt and disturb altogether, guarantee the reliable and stable of communication.
8) Programmable Logic Controller PLC connects and connects compensation arrangement C, warning device AL and temperature transmitter T respectively, is responsible for switching, the reception of alarm signal and the reception and the execution of transmission and temperature protection signal of control compensation device C.
9) compensation arrangement C, PLC is connected with Programmable Logic Controller, is the body of control system control, is responsible for the input and the excision of compensation arrangement, to improve power factor, to regulate tri-phase unbalance factor.
10) warning device AL is connected with Programmable Logic Controller PLC, and alarm signal sends when being responsible for the system failure.
11) temperature transmitter T is connected with Programmable Logic Controller PLC, is responsible for selection of temperature signal, judgement, and the temperature protection signal is offered Programmable Logic Controller PLC.
12) RS232 be connect translation interface RS1 and RS2 and with the physical channel of main control computer PC, data and information sharing when having guaranteed control system work.
Suppose that compensation arrangement C carries out the switching operation task in the course of the work.
At first, bucking-out system and device C are according to automated manner operation down, main control computer PC comprehensively from temperature transmitter T and the alarm signal of warning device AL and electric signal and the information of power transducer P1 and P2 of Programmable Logic Controller PLC, carries out analyzing and processing and initialization operation.
Main control computer is handled, analyzes, judges, is stored these data and reconstitute control command and controls corresponding compensation arrangement as shown in Figure 2, comprises the steps:
1) after the user moved main program, initialization subroutine (S101) at first called in system.
2) judge ore heat furnace transformer primary side voltage whether normally (S102) then.
3), then judge ore heat furnace transformer primary side current whether normally (S103) if ore heat furnace transformer primary side voltage is normal; Otherwise excision electric capacity and report to the police (S106).
4) whether normally above-mentioned judged result (S103) if the ore heat furnace transformer primary side current is normal, then judges ore heat furnace transformer secondary side voltage (S104); Otherwise excision electric capacity and report to the police (S106).
5) whether normally above-mentioned judged result (S104) if ore heat furnace transformer secondary side voltage is normal, then judges short net of ore heat furnace transformer secondary side and capacitor temperature (S105); Otherwise excision electric capacity and report to the police (S106).
6) above-mentioned judged result (S105) if short net of ore heat furnace transformer secondary side and capacitor temperature are normal, then judges whether automatic operation (S108); Otherwise excision electric capacity and report to the police (S106).
7) then to excision electric capacity and warning (S106), whether judging reports to the police recovers normal (S107).
8) above-mentioned judged result (S107) if system alarm does not reset, then reverts to above-mentioned steps (S102); If system alarm resets, then continue to carry out (S108).
9) above-mentioned judged result (S108) if system controls automatically, is called switching subprogram (S109), otherwise finishes.
Switching control method is as shown in Figure 3: comprise the steps:
1) enter the switching subprogram after, at first judge whether anxious stop (S201).
2) above-mentioned judged result (S201) is if urgency is stopped then return; Otherwise judge power factor whether low (S202).
3) above-mentioned judged result (S202) if power factor is low, judges then whether this low phase of power factor throws full (S203).
4) above-mentioned judged result (S203) expires if thrown, and then returns; Otherwise judge whether drop into time-delay arrives (S204).
5) above-mentioned judged result (S204) does not arrive if drop into time-delay, then returns; Otherwise drop into capacitor (S205) in proper order.
6) then, revert to above-mentioned steps (S203).
7) follow above-mentioned judged result (S202),, then judge power factor whether high (S206) if power factor is not low.
8) above-mentioned judged result (S206) is if the power factor height judges then whether this high phase of power factor has excised finish (S207).
9) above-mentioned judged result (S207) if excision finishes, is then returned; If excision does not finish, judge then whether the excision time-delay arrives (S208).
10) above-mentioned judged result (S208) if the excision time-delay is not arrived, is then returned; If the excision time-delay is arrived, then excise capacitor (S209) in proper order.
11) then, revert to above-mentioned steps (S207).
12) follow above-mentioned judged result (S206),, then judge whether balance (S210) of active power if power factor is not high.
13) above-mentioned judged result (S210) is if balance is then returned; If uneven, judge then whether of active power minimum has thrown full (S211) mutually.
14) above-mentioned judged result (S211) expires if thrown, then returns; Do not expire if throw, otherwise judge whether drop into time-delay arrives (S212).
15) above-mentioned judged result (S212) does not arrive if drop into time-delay, then returns; Otherwise drop into capacitor (S213) in proper order.
16) then, revert to above-mentioned steps (S210).
Claims (3)
1. the submerged arc furnace secondary reactive compensation control system is characterized in that: comprise main control computer, display, input equipment, two translation interfaces, two intelligent electric power transmitters, primary side voltage transformer, primary side current instrument transformer, secondary side voltage transformer, secondary side current instrument transformer, Programmable Logic Controller, temperature transmitter, compensation arrangement, warning device and transmission standard interface and power-supply systems; Wherein,
Main control computer is electrically connected with display and input equipment, and main control computer is electrically connected with the transmission standard interface by two translation interfaces, connects intelligent electric power transmitter and Programmable Logic Controller respectively by the transmission standard interface;
A port of one of two intelligent electric power transmitters is electrically connected by the transmission standard interface, and port is electrically connected primary side voltage transformer and primary side current instrument transformer respectively in addition; A port of another of two intelligent electric power transmitters is electrically connected by the transmission standard interface, and port is electrically connected secondary side voltage transformer and secondary side current instrument transformer respectively in addition;
Programmable Logic Controller PLC connects and connects compensation arrangement C, warning device AL and temperature transmitter T respectively, is responsible for switching, the reception of alarm signal and the reception and the execution of transmission and temperature protection signal of control compensation device C;
The primary side voltage transformer links to each other with power transducer respectively with secondary side current instrument transformer, voltage transformer summation current transformer with primary side current instrument transformer and secondary side voltage transformer, be used for to main control computer provide ore heat furnace transformer once with the secondary low-voltage side data, and these data are handled, analyze, judge, are stored and reconstitute control command by main control computer and control corresponding compensation arrangement.
2. submerged arc furnace secondary reactive compensation control system according to claim 1 is characterized in that: described main control computer is handled, analyzes, judges, is stored these data and reconstitute control command and controls corresponding compensation, comprises the steps:
1) after the user moved main program, initialization subroutine S101 at first called in system;
2) judge whether normally S102 of ore heat furnace transformer primary side voltage then;
3), then judge whether normally S103 of ore heat furnace transformer primary side current if ore heat furnace transformer primary side voltage is normal; Otherwise excise electric capacity and the S106 that reports to the police;
4) whether normally above-mentioned judged result S103 if the ore heat furnace transformer primary side current is normal, then judges ore heat furnace transformer secondary side voltage S104; Otherwise excise electric capacity and the S106 that reports to the police;
5) whether normally above-mentioned judged result S104 if ore heat furnace transformer secondary side voltage is normal, then judges short net of ore heat furnace transformer secondary side and capacitor temperature S105; Otherwise excise electric capacity and the S106 that reports to the police;
6) above-mentioned judged result S105 if short net of ore heat furnace transformer secondary side and capacitor temperature are normal, then judges whether to move automatically S108; Otherwise excise electric capacity and the S106 that reports to the police;
7) then to the excision electric capacity and the S106 that reports to the police, whether judging reports to the police recovers normal S107;
8) above-mentioned judged result S107 if system alarm does not reset, then reverts to above-mentioned steps S102; If system alarm resets, then continue to carry out S108;
9) above-mentioned judged result S108 if system controls automatically, calls switching subprogram S109, otherwise finishes.
3. submerged arc furnace secondary reactive compensation control system according to claim 1 is characterized in that: described switching control method comprises the steps:
1) enter the switching subprogram after, at first judge whether the anxious S201 that stops;
2) above-mentioned judged result S201 is if urgency is stopped then return; Otherwise judge whether power factor hangs down S202;
3) above-mentioned judged result S202 if power factor is low, judges then whether this low phase of power factor throws full S203;
4) above-mentioned judged result S203 expires if thrown, and then returns; Otherwise judge whether drop into time-delay has arrived S204;
5) above-mentioned judged result S204 does not arrive if drop into time-delay, then returns; Otherwise drop into capacitor S205 in proper order;
6) then, revert to above-mentioned steps S203;
7) follow above-mentioned judged result S202,, then judge whether high S206 of power factor if power factor is not low;
8) above-mentioned judged result S206 is if the power factor height judges then whether this high phase of power factor has excised the S207 that finishes;
9) above-mentioned judged result S207 if excision finishes, then returns; If excision does not finish, judge then whether the excision time-delay has arrived S208;
10) above-mentioned judged result S208 if the excision time-delay is not arrived, then returns; If the excision time-delay is arrived, then excise capacitor S209 in proper order;
11) then, revert to above-mentioned steps S207;
12) follow above-mentioned judged result S206,, then judge whether balance S210 of active power if power factor is not high;
13) above-mentioned judged result S210 is if balance is then returned; If uneven, judge then whether of active power minimum has thrown full S211 mutually;
14) above-mentioned judged result S211 expires if thrown, then returns; Do not expire if throw, otherwise judge whether drop into time-delay has arrived S212;
15) above-mentioned judged result S212 does not arrive if drop into time-delay, then returns; Otherwise drop into capacitor S213 in proper order;
16) then, revert to above-mentioned steps S210.
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| CN2010103004256A CN101783515B (en) | 2010-01-19 | 2010-01-19 | Submerged arc furnace secondary reactive compensation control system and method |
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| CN2010103004256A CN101783515B (en) | 2010-01-19 | 2010-01-19 | Submerged arc furnace secondary reactive compensation control system and method |
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| CN101783515B CN101783515B (en) | 2012-02-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800430A (en) * | 2010-05-06 | 2010-08-11 | 西安科技大学 | High and low pressure combined reactive compensation control system for submerged arc furnace |
| CN103529265A (en) * | 2013-09-29 | 2014-01-22 | 中南大学 | System and method for measuring electrical parameter of secondary side of submerged arc furnace |
| CN106124826A (en) * | 2016-06-17 | 2016-11-16 | 华中科技大学 | A kind of mineral hot furnace working of a furnace digital management system, control method and monitoring device thereof |
| CN107991997A (en) * | 2017-12-22 | 2018-05-04 | 郑州中南杰特超硬材料有限公司 | A kind of cubic hinge press total digitalization heating control system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1271770C (en) * | 2002-04-26 | 2006-08-23 | 白玉龙 | Secondary low-voltage compensator for electric furnace |
| CN201256298Y (en) * | 2008-08-08 | 2009-06-10 | 浙江工业职业技术学院 | Transforming plant voltage intelligent reactive dynamic compensation device based on field bus |
| CN201656495U (en) * | 2010-01-19 | 2010-11-24 | 张传伟 | Secondary reactive power compensation control system for ore heating furnace |
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2010
- 2010-01-19 CN CN2010103004256A patent/CN101783515B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800430A (en) * | 2010-05-06 | 2010-08-11 | 西安科技大学 | High and low pressure combined reactive compensation control system for submerged arc furnace |
| CN101800430B (en) * | 2010-05-06 | 2012-08-22 | 西安科技大学 | High and low pressure combined reactive compensation control system for submerged arc furnace |
| CN103529265A (en) * | 2013-09-29 | 2014-01-22 | 中南大学 | System and method for measuring electrical parameter of secondary side of submerged arc furnace |
| CN103529265B (en) * | 2013-09-29 | 2016-01-13 | 中南大学 | A kind of ore furnace secondary side Electric Power Measurement System and method |
| CN106124826A (en) * | 2016-06-17 | 2016-11-16 | 华中科技大学 | A kind of mineral hot furnace working of a furnace digital management system, control method and monitoring device thereof |
| CN107991997A (en) * | 2017-12-22 | 2018-05-04 | 郑州中南杰特超硬材料有限公司 | A kind of cubic hinge press total digitalization heating control system |
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| CN101783515B (en) | 2012-02-01 |
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