CN208337163U - Mineral hot furnace intelligent powerless compensation system - Google Patents
Mineral hot furnace intelligent powerless compensation system Download PDFInfo
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- CN208337163U CN208337163U CN201820663626.4U CN201820663626U CN208337163U CN 208337163 U CN208337163 U CN 208337163U CN 201820663626 U CN201820663626 U CN 201820663626U CN 208337163 U CN208337163 U CN 208337163U
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- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 47
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- 241000208340 Araliaceae Species 0.000 description 1
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- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
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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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Abstract
The utility model relates to ore furnace low-pressure side reactive compensation system fields, it provides a kind of mineral hot furnace intelligent powerless compensation system, including current/voltage acquisition module, power factor detection module, switching control module, IGBT group module, capacitor switching module；And each module is sequentially connected；Collected short net voltage and investment electric current are input to power factor detection module by the current/voltage acquisition module, the data that the power factor detection module passes through reception current/voltage acquisition module, switching control module is transmitted to after detection power factor, the switching control module sends control instruction to IGBT group module according to power factor and determines that capacitor switching module carries out capacitor investment, the mineral hot furnace intelligent powerless compensation system sufficiently compensates for the deficiency of traditional reactive compensation system, realize the automatic control investment and excision of reactive compensation, it is monitored in real time simultaneously, feed back the purpose of data in mineral hot furnace.
Description
Technical field
The utility model relates to ore furnace low-pressure side reactive compensation system fields, the in particular to idle benefit of reactive-load compensator
It repays.
Background technique
Mineral hot furnace is a kind of huge industrial furnace of power consumption, and the structure and work characteristics of mineral hot furnace determine transformer
In idle operating status, short online a large amount of reactive power consumption and resulting significantly operating voltage drop are to cause for many places
The main reason for low yield, high power consumption.The low-voltage and high-current feature of short net determines that short net can generate a large amount of reactive power,
Reactive power can seriously occupy transformer load, constrain transformer and convey active ability, cause furnace Variable power factor lower,
Generally all between 0.6~0.8, lower power factor not only declines the efficiency of transformer, generates a large amount of idle work, also
Additional electric power can be added by power department to impose a fine, and increased three alternate electric power imbalances, caused efficiency low, power consumption
Increase；Along with the short network arrangements length of ore heat furnace transformer differs, three-phase power imbalance caused by smelting and smelting electric arc
Idle become in furnace caused by variation circulates on short net, transformer, supply network, exacerbates the idle damage of entire mineral hot furnace
Consumption.In order to reduce the loss of power grid, power supply quality is improved, power supply bureau requires the power factor of electricity consumption enterprise no 0.9 or more
Then will at electricity consumption enterprise to fine heavily.Power factor is relatively low simultaneously, can also reduce the primary voltage of mineral hot furnace, influence calcium carbide
Smelting.Therefore large-capacity ore furnace will install reactive power compensator additional both at home and abroad at present, to improve the power factor of mineral hot furnace.
Existing current power factor acquisition and the control of reactive power compensating carry out artificial compensation's investment after need to stopping, and on compensator
Parameter setting is carried out, especially site operation personnel more demanding to operating technology is unfavorable for flexibly controlling, while cannot be anti-
The actual conditions of feedback current investment and excision state.
Utility model content
The main purpose of the utility model is to provide a kind of mineral hot furnace intelligent powerless compensation systems, it is intended to realize idle benefit
The automatic control investment repaid and excision, while carrying out the purpose of data in real time monitoring feedback mineral hot furnace.
The technical solution of the utility model is to provide a kind of mineral hot furnace intelligent powerless compensation system, including current/voltage is adopted
Collect module, power factor detection module, switching control module, IGBT group module, capacitor switching module；Wherein, described
Current/voltage acquisition module, power factor detection module, switching control module, IGBT group module, capacitor switching mould
Block is sequentially connected；Collected short net voltage and investment electric current are input to power factor inspection by the current/voltage acquisition module
Module is surveyed, the power factor detection module is transmitted after detecting power factor by the data of reception current/voltage acquisition module
To switching control module, the switching control module sends control instruction to IGBT group module according to power factor and determines electricity
Container switching module carries out capacitor investment.
It further, further include monitoring feedback system, described monitoring feedback system one end is connected to capacitor switching module,
The other end is connected to switching control module, and the monitoring feedback system is by monitoring capacitor switching module to putting into mineral hot furnace
Situation, feedback information to switching control module adjust capacitor input parameter by the switching control module.
Further, data variation in the monitoring feedback system real-time monitoring furnace, when enter furnace power increase, molten bath in furnace
Area becomes larger, and system will send a warning message feedback information to switching control module, and the switching control module adjusts electrode
The insertion depth of electric current, voltage and electrode.
It further, further include thyristor monitoring module, thyristor monitoring module one end is connected to IGBT group
Module, the other end are connected to switching control module, and the thyristor monitoring module passes through brilliant lock in monitoring IGBT group module
Pipe operating status, feedback information to switching control module carry out capacitor excision.
Further, the IGBT group module receives 90 degree of the phase shift of trigger signal phase angle.
It further, further include terminal control display module, the terminal control display module is connected thereto for receiving
Thyristor monitoring module, electric energy quality monitoring module and monitoring feedback system upload monitoring information, and pass through the prison
Measurement information generates corresponding control action.
Further, the current/voltage acquisition module is connected with electric energy quality monitoring module, and the module is for monitoring electricity
The harmonic component for flowing acquisition module and voltage acquisition module acquisition can feed back to end when the harmonic component is more than normal value
End control display module.
The beneficial effects of the utility model are: the mineral hot furnace intelligent powerless compensation system solves during reactive compensation
The reduction of reactive power enters furnace active power and rises asking for the reduced service life for causing the increase in molten bath in turn result in furnace body
Topic, while ensure that the stabilization for entering furnace power of the mineral hot furnace during input control of inactivity compensation, sufficiently compensate for biography
The deficiency of system reactive compensation system.It realizes the automatic control investment and excision of reactive compensation, while being monitored in real time, feeding back mine
The purpose of data in hot stove.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model mineral hot furnace intelligent powerless compensation system；
Fig. 2 is the current/voltage acquisition module structural schematic diagram of the utility model mineral hot furnace intelligent powerless compensation system；
Fig. 3 is the switching control module structural schematic diagram of the utility model mineral hot furnace intelligent powerless compensation system；
Fig. 4 is the IGBT group modular structure schematic diagram of the utility model mineral hot furnace intelligent powerless compensation system；
Drawing reference numeral: 1- current/voltage acquisition module, 2- power factor detection module, 3- switching control module, 4- crystalline substance lock
Pipe trigger module, 5- capacitor switching module, 6- monitor feedback system, 7- terminal control display module, 10- electric energy quality monitoring
Module, 11- current collection circuit, 12- voltage acquisition module, 13- electric quantity acquisition controller, 30- zero cross detection circuit, 31-
PLC controller, 32- contactor, 33- contactor promotion circuit, 40- thyristor monitoring module, 41- trigger data acquisition module,
42- IGBT group controller, 43- thyristor driving circuit.
Specific embodiment
As shown in Figure 1, the utility model provides a kind of mineral hot furnace intelligent powerless compensation system, including current/voltage acquisition
Module, power factor detection module, switching control module, IGBT group module, capacitor switching module；Wherein, the electricity
Stream/voltage acquisition module, power factor detection module, switching control module, IGBT group module, capacitor switching module
It is sequentially connected；Collected short net voltage and investment electric current are input to power factor detection by the current/voltage acquisition module
Module, the power factor detection module are transmitted to after detecting power factor by the data of reception current/voltage acquisition module
Switching control module, the switching control module send control instruction to IGBT group module according to power factor and determine capacitor
Device switching module carries out capacitor investment.On-line communication can be carried out with mineral hot furnace control system, enter furnace with adjust mineral hot furnace
Power, voltage, electric current, to realize the automatic control of mineral hot furnace.
It wherein, further include monitoring feedback system, described monitoring feedback system one end is connected to capacitor switching module, another
End is connected to switching control module, and the monitoring feedback system passes through monitoring capacitor switching module to putting into feelings in mineral hot furnace
Condition, feedback information to switching control module adjust capacitor input parameter, and data become in the monitoring feedback system real-time monitoring furnace
Change, furnace power increases, molten bath area becomes larger in furnace when entering, and system will send a warning message feedback information to switching control module,
The switching control module adjusts the insertion depth of the electric current of electrode, voltage and electrode.Conventional compensation device does not monitor instead
Feedback system cannot be reflected really when situation idle in forehearth, because simple carries out reactive compensation simultaneously according to power factor
It cannot really solve the problems, such as that mineral hot furnace enters furnace power, will cause mineral hot furnace reduced service life；Thermal energy consumption increases, output ratio
Decline；It will cause situations such as ore body damages when serious, and this system proposes that introducing monitoring feedback system leads to in-furnace information
It crosses terminal control and shows and the ginseng such as be presented to the user, including enter furnace power, molten bath size, three-phase current (voltage), three-phase equilibrium degree
Number data provide foundation to mineral hot furnace operation after putting into reactive compensation for user, while also providing corresponding control and connecing product,
Effectively solve problem above.
It wherein, further include thyristor monitoring module, thyristor monitoring module one end is connected to IGBT group module,
The other end is connected to switching control module, and the thyristor monitoring module passes through thyristor operation in monitoring IGBT group module
State, feedback information to switching control module carry out capacitor excision.It is big current semiconductor device that thyristor, which belongs to, it is right
Overcurrent and over-voltage are especially sensitive, it is easy to overcurrent occur and burn and over-voltage breakdown situation, thyristor monitoring module monitors to crystalline substance
Brake tube temperature is excessively high, electric current is excessive or cooling water pressure is too low, can feed back to switching control module, and the switching control module can be certainly
Dynamic excision capacitor investment, while terminal control display module is uploaded data to by Ethernet, wherein after detecting overcurrent
Triggering system will be blocked, after detecting over-voltage, triggering system will turn on voltage absorption circuit, and high pressure is shorted to
Ground；The high pressure herein referred to is: as caused by current transients, mains by harmonics and lightning stroke.Normal short net voltage is far below crystalline substance
The pressure resistance of brake tube.
Wherein, the IGBT group module receives 90 degree of the phase shift of trigger signal phase angle, the pass of IGBT group module
Key is that the road trigger signal Yao Yuzhujia phase is identical, and mineral hot furnace is inductive load, and it is idle to generate a large amount of current mode, in master
Electric current will be occurred by, which adding in road, mends 90 degree of phase shift.Due to being voltage signal in synchronized sampling, to guarantee the thyristor in trigger process
It is fully on, need 90 degree of the phase shift of phase-triggered angle.
It wherein, further include terminal control display module, the terminal control display module is for receiving crystalline substance connected to it
The monitoring information that brake tube monitoring modular, electric energy quality monitoring module and monitoring feedback system upload, and believed by the monitoring
Breath generates corresponding control action.
The current/voltage acquisition module is specific as follows:
As shown in Fig. 2, the current/voltage acquisition module, including electric quantity acquisition controller, the electric quantity acquisition controller
One end is connected with voltage collection circuit all the way, and the other end is connected with four road current collection circuits；The voltage collection circuit all the way
For acquiring short net voltage data；Four road current collection circuit is further, described for acquiring capacitor investment electric current
Current/voltage Acquisition Circuit is transmitted to acquire high voltage side current/voltage data, current/voltage using high pressure CT/PT mutual inductor
Acquisition Circuit acquires 0~31 order harmonic components of high voltage side current/voltage, phase and harmonic distortion.
Wherein, current/voltage Acquisition Circuit is for acquiring current/voltage data, and up to 0.5%, resolution ratio reaches precision
0.01%.It is delta-connection in furnace, there are 30 degree of phase differences since mineral hot furnace outer net power connection is star connection.It is logical
The power of normal each relatively each phase make can not precise acquisition power factor data, therefore using misphase collection voltages and electric current side
Formula, voltage, current data after the acquisition reach power factor detection module by control module processing；The power quality
Monitoring modular is described through electric quantity acquisition controller treated data for monitoring；Therewith, data upload terminal control is shown
Show module so that system displays data and controls, traditional ammeter can be replaced using the module, simplifies circuit composition, mention
High circuit operational efficiency.
Further, current/voltage acquisition module is connected with electric energy quality monitoring module, which acquires for monitoring current
The harmonic component of module and voltage acquisition module acquisition, phase/frequency, for precision up to 0.5%, resolution ratio reaches 0.01%.Mine
Hot stove is a unstable locking equipment, and especially in the case where collapsing material, the harmonic component of short net can become very heavy, to electrical
Equipment affects greatly, and especially 3,5 subharmonic are overweight will cause electrical equipment, especially control equipment generates malfunction；
Therefore, when electric energy quality monitoring module monitors to harmonic component are more than normal value, terminal control can be fed back to by Ethernet
Display module issues information warning, to remind operator to pay attention to situation in furnace.Switching control module will block all numbers
Thyristor, with each device of protective loop, electric energy quality monitoring module monitors to electric current, the upper limit of voltage acquisition data and lower limit are super
Setting value out can feed back to terminal control display module by Ethernet, issue information warning.
The switching control module is specific as follows:
As shown in figure 3, the switching control module, including PLC controller, the PLC controller are connected separately with zero passage inspection
Slowdown monitoring circuit, contactor push circuit and IGBT group module；The zero cross detection circuit is for detecting zero cross signal；Its
In, zero cross signal control IGBT group module triggering and contact that the PLC controller is fed back according to zero cross detection circuit
Device pushes the triggering of circuit drives contactor, realizes the investment and excision of capacitor.The module has the voltage zero-cross of thyristor
The characteristics of pressure drop after detection and contactor are attracted is zero, and calorific value is small, does not need cooling system.
Wherein, zero cross detection circuit includes current over-zero detection circuit and voltage zero-crossing detection circuit, the current over-zero
Detection circuit for acquiring current signal, detect the acquisition current signal whether zero crossing；The voltage zero-crossing detection circuit
For collection voltages signal, detect the collection voltages signal whether zero crossing, to realize voltage zero-cross investment and current over-zero
Excision.The module has voltage zero-cross testing mechanism, and biggish rush of current will not be generated when contactor is attracted, and increases capacitor
The service life of device.
It is highly preferred that voltage zero-crossing detection circuit is using at least two synchronizing voltage mutual inductors to the short net voltage waveform of low pressure
It is sampled, the waveform after the short net voltage sample of the low pressure is converted into pulse signal through Phototube Coupling and carries out voltage zero-cross inspection
It surveys, when detecting voltage zero-crossing signal, which is sent into PLC controller.
Further, after receiving the voltage zero-crossing signal, the PLC controller control IGBT group module makes it
Conducting, after a certain period of time, PLC controller control contactor pushes circuit drives contactor to be attracted for delay, and the contactor is attracted
It is delayed after the completion and closes thyristor after a certain period of time.
Wherein, current over-zero detects during current over-zero detection circuit carries out capacitor investment, if the PLC controller connects
Current zero-crossing signal is received, capacitor excision instruction is executed；Otherwise, current operation is continued to execute.
Further, when executing the capacitor excision instruction, the PLC controller control driving circuit drives thyristor
It is connected again, after a certain period of time, the release of PLC controller control contactor, the contactor discharges and the completion that is delayed for delay
Cutoff thyristor afterwards.Contactor will not generate arcing in release, to solve the problems, such as that the contactor service life is short while protecting
Capacitor is from heavy current impact.
In addition, PLC controller is provided with external function terminal, for detecting the actuation or release conditions of contactor.Due to
Turn on thyristors pressure drop only has 1 to 2V voltage, and contactor will not generate spark phenomenon when being attracted.
The design more meets the demand of the low benefit of mineral hot furnace so that the reduction of complete set of equipments cost: using control unit and executing
The electric current of device isolation mode, performer is unrestricted, can the more capacitors of single channel switching, on the market using being integrated envelope
Dress form, the limited maximum switching of electric current are no more than 100kVar capacitor group, and when use need to carry out multiple groups fractionation, and quantity is more, installation
It is complicated.
The IGBT group module is specific as follows:
As shown in figure 4, IGBT group module includes control module, described control module one end is connected with trigger data and adopts
Collect module, the other end is connected with thyristor driving circuit, and the trigger data acquisition module is for acquiring switching control module hair
That send opens or closes the instruction of thyristor, and control thyristor driving circuit generates phase after the processing of IGBT group controller
The operation answered；The IGBT group module output end is connected with switching control module, and output end is connected with capacitor switching module
And thyristor monitoring module；The thyristor monitoring module is connected to terminal control display module；The capacitor switching mould
Block executes capacitor investment operation by IGBT group module instruction；The thyristor monitoring module exists for monitoring thyristor
Related data is uploaded to terminal control display module by Ethernet by service condition soldier during investment and excision.The thyristor
Trigger module introduces thyristor monitoring module, and temperature, electric current, the overvoltage condition that can effectively monitor thyristor can to improve its operation
By property and safety.
After system carries out powering on standby, IGBT group controller carries out initialization and self-test to IGBT group module
Work specifically includes that and removes interim storing data, removes thyristor gating circuit register data, block IGBT group electricity
Road prevents from triggering, detects each data acquisition circuit state, if without exception, set ready state；It will after completion initial work
Self-inspection data and current trigger module peripheral data are put into the storage region of control module, are sent in thyristor monitoring mould in real time
Block is monitored, and is uploaded to terminal control display module and is shown, has the characteristics of stable, error reporting mechanism.
IGBT group controller waits switching control module to put into or cut off for capacitor and instructs, trigger data acquisition
The investment that module collects the transmission of switching control module is transmitted to IGBT group controller, the IGBT group control after instructing
Device processed can be very according to instruction control thyristor driving circuit driving turn on thyristors or disconnection, so that capacitor switching module executes
The lasting investment or excision instruction of capacitor.
It is the fling-cut switch using contactor as capacitor, since alternating current is positive and negative in previous mineral hot furnace reactive compensation
Variation, it will cause and shove when compensating capacitor switching, contact arc discharge phenomenon, therefore trigger data acquisition module acquires
Voltage difference between the zero crossing of voltage waveform and current investment capacitor and the short net of mineral hot furnace, when thyristor both end voltage is zero
When put into capacitor group, the generation of phenomenon of arc discharge can be effectively eliminated.
In addition, it is big current semiconductor device that thyristor, which belongs to, it is especially sensitive to overcurrent and over-voltage, it is easy to occur
Electric current burn with over-voltage breakdown situation, thyristor monitoring module monitors are excessively high to thyristor temperature, electric current is excessive or cooling water pressure
It is too low, IGBT group controller can be fed back to, the IGBT group controller can cut off capacitor investment automatically, lead to simultaneously
Cross Ethernet and upload data to terminal control display module and shown, wherein after detecting overcurrent will to trigger module into
Row block, after detecting over-voltage, trigger module will turn on voltage absorption circuit, be shorted to ground for high pressure；The high pressure herein referred to
It is: as caused by current transients, mains by harmonics and lightning stroke.Normal short net voltage is the pressure resistance far below thyristor.
The specific execution process of whole system are as follows: when switching control module receives the function of power factor detection module output
When rate factor is less than 0.85, switching control module assigns instruction and gives IGBT group module, assigns finger to capacitor switching module
It enables and executes investment capacitor operation, continue capacitor all the way under investment if power factor deficiency, until power factor is greater than
0.9 or it is equal to 0.9, wherein switching control module stops sending to IGBT group module 50 and puts into when power factor=0.9
Capacitor instruction；When power factor > 0.91, if there is investment capacitor number before, switching control module is touched to thyristor
It sends out module and sends excision capacitor instruction, until power factor is equal to 0.9.
When issuing capacitor investment instruction, will be judged by switching control module, the circuit currently having been put into
Several and remaining plus number, if monitoring feedback system feedback data is all put into, while monitor feedback system by with
Too net issues prompt information to terminal control display module, informs operator, while in normal operation, thyristor prison
The case where survey module monitors put into the case where temperature of the thyristor in circuit, voltage, electric current, if it happens exceed safe range will
Issuing instruction allows switching control module to cut off current loop, and by monitoring feedback system, monitoring capacitor switching module is carried out at any time
After capacitor investment in furnace data variation, if enter furnace power increase it is excessive cause molten bath in furnace to become, monitoring feedback system will be sent out
Warning message reminds operator to adjust the electric current of electrode and the insertion depth of voltage and electric grade to terminal control display module out
Degree, the reactive compensation system by data in the furnace after reactive compensation include into furnace power, molten bath size, three-phase current (voltage),
The supplemental characteristics such as three-phase equilibrium degree are presented to the user by terminal control display module, for user to mine after putting into reactive compensation
Hot stove operation provides foundation, can also carry out on-line communication with mineral hot furnace control system, enter furnace power, electricity with adjust mineral hot furnace
Pressure, electric current, to realize the automatic control of mineral hot furnace.The self-inspection data generated in system operation and current IGBT group
Data in mineral hot furnace are analyzed in thyristor monitoring module monitors analysis data and monitoring feedback system monitoring in the process, pass through ether
Net is sent to terminal control display module, carries out integral monitoring and analysis by terminal control display module.
The power factor of ore furnace acquisition control system solves the single power factor of ore furnace acquisition control system of tradition
The shortcomings that system, only simply pursues the promotion of power factor, and the power factor of ore furnace acquisition control system realizes mine heat
The automatic collection and control of furnace power factor acquisition control system, while being monitored, being fed back in real time the mesh of data in mineral hot furnace
, while ensure that the stabilization for entering furnace power of the mineral hot furnace during input control of inactivity compensation, sufficiently compensate for biography
The deficiency of system reactive compensation system.
Claims (7)
1. mineral hot furnace intelligent powerless compensation system, which is characterized in that detect mould including current/voltage acquisition module, power factor
Block, switching control module, IGBT group module, capacitor switching module；Wherein, the current/voltage acquisition module, power
Factor detection module, switching control module, IGBT group module, capacitor switching module are sequentially connected；The current/voltage
Collected short net voltage and investment electric current are input to power factor detection module by acquisition module, and the power factor detects mould
Block is transmitted to switching control module, the switching control after detecting power factor by the data of reception current/voltage acquisition module
Molding block sends control instruction to IGBT group module according to power factor and determines that capacitor switching module carries out capacitor throwing
Enter.
2. mineral hot furnace intelligent powerless compensation system as described in claim 1, which is characterized in that it further include monitoring feedback system,
Described monitoring feedback system one end is connected to capacitor switching module, and the other end is connected to switching control module, and the monitoring is anti-
Feedback system passes through institute to situation, feedback information to switching control module is put into mineral hot furnace by monitoring capacitor switching module
It states switching control module and adjusts capacitor input parameter.
3. mineral hot furnace intelligent powerless compensation system as claimed in claim 2, which is characterized in that the monitoring feedback system is real-time
Data variation in furnace is monitored, furnace power increases, molten bath area becomes larger in furnace when entering, and system will send a warning message feedback information extremely
Switching control module, the switching control module adjust the insertion depth of the electric current of electrode, voltage and electrode.
4. mineral hot furnace intelligent powerless compensation system as described in claim 1, which is characterized in that further include thyristor monitoring mould
Block, thyristor monitoring module one end are connected to IGBT group module, and the other end is connected to switching control module, the crystalline substance
Brake tube monitoring modular, which passes through, monitors thyristor operating status in IGBT group module, feedback information to switching control module, into
The excision of row capacitor.
5. mineral hot furnace intelligent powerless compensation system as described in claim 1, which is characterized in that the IGBT group module connects
Receive 90 degree of the phase shift of trigger signal phase angle.
6. mineral hot furnace intelligent powerless compensation system as described in claim 1, which is characterized in that further include that terminal control shows mould
Block, the terminal control display module for receive thyristor monitoring module connected to it, electric energy quality monitoring module and
The monitoring information that feedback system uploads is monitored, and corresponding control action is generated by the monitoring information.
7. mineral hot furnace intelligent powerless compensation system as described in claim 1, which is characterized in that the current/voltage acquires mould
Block is connected with electric energy quality monitoring module, the harmonic wave point which acquires for monitoring current acquisition module and voltage acquisition module
Amount can feed back to terminal control display module when the harmonic component is more than normal value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820663626.4U CN208337163U (en) | 2018-05-07 | 2018-05-07 | Mineral hot furnace intelligent powerless compensation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820663626.4U CN208337163U (en) | 2018-05-07 | 2018-05-07 | Mineral hot furnace intelligent powerless compensation system |
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| CN208337163U true CN208337163U (en) | 2019-01-04 |
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| CN201820663626.4U Expired - Fee Related CN208337163U (en) | 2018-05-07 | 2018-05-07 | Mineral hot furnace intelligent powerless compensation system |
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| CN (1) | CN208337163U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109757003A (en) * | 2019-03-06 | 2019-05-14 | 重庆大朗冶金新材料有限公司 | Mineral hot furnace autocontrol method |
| CN110460064A (en) * | 2018-05-07 | 2019-11-15 | 成都市中朋达电气有限公司 | Mineral hot furnace intelligent powerless compensation system |
-
2018
- 2018-05-07 CN CN201820663626.4U patent/CN208337163U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110460064A (en) * | 2018-05-07 | 2019-11-15 | 成都市中朋达电气有限公司 | Mineral hot furnace intelligent powerless compensation system |
| CN109757003A (en) * | 2019-03-06 | 2019-05-14 | 重庆大朗冶金新材料有限公司 | Mineral hot furnace autocontrol method |
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Granted publication date: 20190104 |