CN104037947B - A kind of coke gas abnormal emission is prevented and treated method and system - Google Patents

A kind of coke gas abnormal emission is prevented and treated method and system Download PDF

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CN104037947B
CN104037947B CN201410303223.5A CN201410303223A CN104037947B CN 104037947 B CN104037947 B CN 104037947B CN 201410303223 A CN201410303223 A CN 201410303223A CN 104037947 B CN104037947 B CN 104037947B
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equipment
power
voltage
power supply
failure
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CN104037947A (en
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李晓明
李晶
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Wuhan University WHU
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/248—UPS systems or standby or emergency generators

Abstract

The invention discloses a kind of coke gas abnormal emission and prevent and treat method and system. This method comprises the following steps: 1. the electricity supplying and using system quality of power supply and key equipment operating condition Real-Time Monitoring and event of failure triggering; 2. key equipment protection; 3. electricity supplying and using system voltage pulsation inhibition and harmonic wave isolation; 4. key equipment safety interlocking is controlled with coordination; 5. key equipment, power supply or circuit are uninterrupted switches without impacting dynamically. Native system is provided with Real-Time Monitoring and event of failure triggering system, equipment protection system, voltage pulsation inhibition and harmonic wave shielding system, key equipment safety interlocking and coordinated control system and uninterrupted without impacting dynamic switched system; each system coordination work, realizes the whole synthesis control to coke gas abnormal emission. Compared with prior art, the present invention not only can prevent coal gas abnormal emission, and can also improve efficiency, wastage reducing and energy saving, raising quality of voltage, raising coking safety in production level and production efficiency.

Description

A kind of coke gas abnormal emission is prevented and treated method and system
Technical field
The present invention relates to high pollution industry pollutant emission control field, particularly a kind of coke gas abnormal emission is anti-Control method and system.
Background technology
Coking industry is that coking industry is the basic industry of industrial circle, and product coke, tar, coal gas that it is produced are doneFor industrial raw material, in economic development and social development, occupy very important status. Particularly enter 21 century, IThe economy of state enters a new fast-developing period. Due to the wilderness demand of steel, stimulate comprehensive general rise of prices of the stocks and other securities of metallurgy industry, withThe fast development of drive coking industry, the growth at double of the output of coke, new coke-oven plant is as emerged rapidly in large numbersBamboo shoots after a spring rain, development is rapidly.But coking industry is again the industry of a highly energy-consuming and high pollution, its environmental problem relates to atmosphere pollution, water pollution, soilPollute and noise pollution various aspects; It is state key monitoring trade. If it is not to the environmental problem of coking industry, enoughAttention and strong control, will make our environment pay heavy cost.
Due to the problem such as power supply quality, equipment fault problem, equipment operating be improper, what cause is poisonous, harmful, inflammable, easyQuick-fried yellow coal gas abnormal emission is the ubiquitous technical barrier of coking industry. The abnormal emission of coke gas seriously pollutes weekLimit air ambient, affects local resident's healthy and normal Working Life, and its control is extremely urgent. But, domesticThere is no referential complete skill scheme and relevant device outward and effectively solve this difficult problem, the present invention arranges extremely according to coke gasThe rule of putting, formulates the overall technical scheme that solves coal gas abnormal emission problem, similar for solving China's coking and other industryEnvironmental pollution problem technical support and equipment guarantee are provided.
End 2011, National Development and Reform Commission assert that the coking production enterprise that meets entry criteria has 199, industryAssert that with information-based portion the coking production enterprise that meets entry criteria has 264. At present, China's coke production capacity has exceeded 600,000,000Ton, within 2013, actual production reaches 4.76 hundred million tons, and apparent consumption amount is 4.71 hundred million tons, and output and consumption figure all account for world's cokeThe more than 65% of output and consumption figure. Because converter output of steel in China's iron and steel flow process exceedes 90%, (electric steel accounts for crude steel output8.86%), electric steel increases molten iron consumption for reducing costs in addition, the consumption figure sustainable growth of the pig iron. In addition calcium carbide, coloured,The demand of the industries such as metal, chemical industry, ferroalloy, machinery, for coke product provides huge market.
The growth momentum of coking industry is fine on the one hand, and the huge environmental protection that the sector causes locality is on the other hand pressedPower. Because coal gas abnormal emission is seriously polluted, harm is very large, so according to the pertinent regulations of national environmental protection policy, seriously pollutedWill be stopped doing business time limit rectification of enterprise, even close.
This working of an invention can effectively solve coking industry and other similar industry is poisonous, harmful, inflammable, explosive gasBody abnormal emission technical barrier, the real-time data acquisition and the analytical system that in abnormal emission entirety governance process, adopt can beProduction management and environmental management department provide real time data and objective basis, provide decision-making for implementing effective safety and environmental protection measureSupport. Therefore, this working of an invention will produce huge economic benefit and social effect with society to coking and other relevant enterprisesBenefit.
Summary of the invention
The invention provides a kind of coke gas abnormal emission and prevent and treat method and system thereof, be intended to solve general at coking industryExist due to problems such as power supply quality, equipment fault problem, equipment operating are improper, what cause is poisonous, harmful, inflammable, explosiveThe technical barrier of yellow coal gas abnormal emission.
The object of the present invention is achieved like this:
One, coke gas abnormal emission is prevented and treated method (abbreviation method)
This method comprises: key equipment protection, electricity supplying and using system voltage pulsation inhibition and harmonic wave isolation, key are set and establishStandby safety interlocking and coordination control key equipment, power supply or circuit are uninterruptedly without four control function lists such as the dynamic switchings of impactUnit, by the electricity supplying and using system quality of power supply and key equipment operating condition Real-Time Monitoring and four controls of event of failure triggering drivingFunctional unit starts corresponding work. Concrete steps are as follows:
Step 1, the electricity supplying and using system quality of power supply and key equipment operating condition Real-Time Monitoring and event of failure trigger 1, logicalCross instantaneous voltage and the electric current of each 10kV supply line head and end, transformer primary pair side, key equipment are carried out to high-speed synchronousData acquisition, data processing, electric parameter and power quality index calculate fast, fault message extracts, event of failure record andUpload in time and with the data communication of protection equipment and switching device, realize the electricity supplying and using system quality of power supply and key equipment fortuneThe Real-Time Monitoring of row operating mode and event of failure Trigger Function.
The protection of step 2, key equipment, is optimized by the setting valve of the voltage protection to key equipment, according to forThe Real-Time Monitoring of the electric system quality of power supply and key equipment operating condition and event of failure trigger, and start key equipment is protected in timeProtect with supply voltage, rectification, inversion and the capacitor group of frequency converter and carry out quality control and protection control, realize key equipment and protectProtective function.
Step 3, electricity supplying and using system voltage pulsation inhibition and harmonic wave isolation 3, set up more a little louder zero in voltage pulsation and excessively tide overJourney dynamic reactive compensation device suppresses the voltage pulsation of electricity supplying and using system; Entrance at harmonic source is set up harmonic-wave isolation device, everyFrom the harmonic wave of harmonic source, prevent humorous wave interference control and protection system; According to the electricity supplying and using system quality of power supply and key equipment fortuneThe Real-Time Monitoring of row operating mode and event of failure trigger, and start in time the work of electricity supplying and using system voltage pulsation inhibition and harmonic wave isolationDo.
Step 4, key equipment safety interlocking with coordinate to control, according to coking production technological requirement, to key equipment andAuxiliary equipment is carried out safety interlocking, prevent due to equipment operating or move improper, cause production process interrupt, cause coke gasAbnormal emission; According to Real-Time Monitoring and the fault thing of service requirement and the electricity supplying and using system quality of power supply and key equipment operating conditionPart triggers, and starts in time and realizes key equipment safety interlocking and coordinated control function.
Step 5, key equipment, power supply or circuit are uninterrupted switches 5 without impacting dynamically, by breaker or contactor and electricityThe dynamic change-over switch of power electronic switch formation in parallel, difference in working power (or equipment) and stand-by power supply (or equipment) loopDynamically change-over switch and dynamically change-over switch of stand-by power supply (or equipment) of working power (or equipment) is set, if stand-by power supply(or equipment) is also in running order, between working power (or equipment) and stand-by power supply (or equipment) bus, sets up mother and movesState change-over switch. According to Real-Time Monitoring and the fault of service requirement and the electricity supplying and using system quality of power supply and key equipment operating conditionEvent triggered, starts in time and realizes the uninterrupted nothing of key equipment, power supply or circuit and impact dynamic handoff functionality.
Two, coke gas abnormal emission is prevented and treated system (abbreviation system)
Native system comprises 5 subsystems, that is: Real-Time Monitoring and event of failure triggering system, equipment protection system, voltage waveThe moving inhibition impacts and dynamically switches system with harmonic wave shielding system, key equipment safety interlocking and coordinated control system and uninterrupted nothingSystem, each subsystem co-ordination, realizes the whole synthesis of coke gas abnormal emission is administered. It connects and interactive relation is:The input of Real-Time Monitoring and event of failure triggering system respectively with supply line's (transformer station of 10kV supply line to coke-oven plant first and lastEnd), the voltage of stand-by power supply or two-way working power, transformer high-low-voltage side or power source bus, key equipment and frequency conversion equipmentTransformer summation current transformer is connected, and carries out synchronous real-time data acquisition, the electricity supplying and using system quality of power supply and key equipment fortuneThe Real-Time Monitoring of row operating mode and fault message extract, and adopt event of failure to trigger interrupt mode output access device protection respectivelySystem, voltage pulsation inhibition and harmonic wave shielding system, key equipment safety interlocking and coordinated control system and uninterrupted without punchingHit the input of dynamic switched system; Equipment protection system and voltage pulsation inhibition and harmonic wave shielding system have been removed equipment of itselfProtect and improve outside the function of quality of voltage, also will be subject to the event of failure of Real-Time Monitoring and event of failure triggering system to trigger controlSystem. Key equipment safety interlocking and coordinated control system and and uninterrupted without impacting the input of dynamic switched system with in real timeMonitoring and the output of event of failure triggering system are connected, and are triggered respectively and are controlled key equipment and change by its event of failureFrequently equipment, stand-by power supply or two-way working power and supply line's (transformer station of 10kV supply line to coke-oven plant first and last end), standbyBe connected by power supply or two-way working power, realize switching over and the chain control of equipment operating of equipment and power supply.
Prior art adopts coal gas abnormal emission ignition method conventionally, for example: Yang Junfeng, Zhai Zibao, Kong Qingdou.ExperionPKSSCM realize the igniting of coal oven dithio-gas automatic relief, digital technology and application, 4 phases in 2013, to different rowCoal oven dithio-gas carry out automatic relief ignition, this method can only reduce the discharge capacity to coke gas atmosphere relatively,But comburant is still larger to the pollution of atmosphere, and may there is the hidden danger of blast.
Compared with prior art, the present invention has the following advantages and good effect:
1. adopt the electricity supplying and using system quality of power supply of the present invention and key equipment operating condition Real-Time Monitoring and event of failureTriggering technique, carries out height to instantaneous voltage and the electric current of each 10kV supply line head and end, transformer primary pair side, key equipmentSpeed synchronous data collection, data processing, electric parameter and power quality index calculates fast, fault message extract, event of failureRecord and upload in time and with the data communication of protection equipment and switching device, rapid triggering key equipment safety interlocking and associationRegulation and control system and uninterrupted nothing are impacted dynamically and are switched, and guarantee that the uninterrupted power supply of faulty equipment or power supply and stand-by equipment or power supply is cutVisual, the automation, the safety and reliability that change, prevent from, because key equipment or power failure cause power failure, causingCoke gas abnormal emission.
2. adopt electricity supplying and using system voltage pulsation inhibition of the present invention and harmonic wave isolation technology, to high-power frequent variationsReactive load power carry out zero transition procedue dynamic passive compensation, reduce system power, raise load side voltage, suppress loadVoltage pulsation, prevents that load voltage fluctuation from causing coke gas abnormal emission; Harmonic wave to big-power transducer is isolated, anti-Only harmonic wave amplifies through cable and capacitor, and severe contamination electric power system disturbs relay protection and control system normally to work, and drawsPlay key equipment tripping operation, cause coke gas abnormal emission.
3. adopt key equipment resist technology of the present invention, the setting valve of the voltage protection to key equipment is optimized,The frequency converter of IGBT assembly is set up to the voltage shock avoiding module protection with self-starting function, do not losing frequency converter under-voltage protection workWith prerequisite under, rationally increase delay time, the voltage flicker (in 20ms) that the time that escapes is shorter. High-tension apparatus is increased femaleLine residual voltage protective device, bus over voltage protection and powerful device short trouble fast tripping protection, the machine while ensureing equipment faultSwitch is fast shut-off in the cooperation time is adjusted in protection, reduces the impact of this earth fault on electrical network, prevents because overstep tripping drawsPlay coke gas abnormal emission.
4. not only can prevent coal gas abnormal emission, and can also improve efficiency, wastage reducing and energy saving, raising voltageQuality, improve coking safety in production level and production efficiency.
In a word, the present invention not only can effectively solve at coking industry ubiquitous due to power supply quality, equipment faultThe problem such as problem, equipment operating are improper, the technical barrier of poisonous, harmful, inflammable, the explosive yellow coal gas abnormal emission causing,Efficiency, wastage reducing and energy saving, raising quality of voltage be can also improve, coking safety in production level and production efficiency improved.In addition, can provide for production management and environmental management department operation real time data and the objective basis of coking production process, forImplement effective safety and environmental protection measure decision support is provided. Therefore, this working of an invention will be to coking and other relevant enterprises andSociety produces huge economic benefit and social benefit.
Brief description of the drawings
Fig. 1 is the embodiment of the method flow chart the present invention relates to.
Fig. 2 is system embodiment general system set-up and the flow diagram the present invention relates to.
Fig. 3 is the system embodiment key equipment protection system block diagram the present invention relates to.
Fig. 4 is the voltage pulsation inhibition of system embodiment electricity supplying and using system and the harmonic wave shielding system structure side the present invention relates toBlock diagram.
Fig. 5 is system embodiment key equipment safety interlocking and the coordinated control system block diagram the present invention relates to.
Fig. 6 is that the system embodiment the present invention relates to is uninterrupted without impacting dynamic switched system block diagram.
Detailed description of the invention
Describe in detail below in conjunction with drawings and Examples:
One, coke gas abnormal emission is prevented and treated method
Coke gas abnormal emission is prevented and treated embodiment of the method flow chart as shown in Figure 1, as seen from Figure 1:
1,1. the electricity supplying and using system quality of power supply and key equipment operating condition Real-Time Monitoring and event of failure touch described stepSend out 1:
By instantaneous voltage and the electric current of each 10kV supply line head and end, transformer primary pair side, key equipment are enteredRow high-speed synchronous data acquiring, data processing, electric parameter and power quality index calculate fast, fault message extracts, faultLogout and upload in time and with the data communication of protection equipment and switching device, realize the electricity supplying and using system quality of power supply andThe Real-Time Monitoring of key equipment operating condition and event of failure Trigger Function.
In half period, (10ms) judges overvoltage, overcurrent, voltage swells, rapid drawdown, 10kV line-to-ground or shortRoad fault, and extract fault message as event of failure triggering signal, adopt interrupt mode to send to protection equipment and switching deviceControl system;
Within 8 cycles, calculate voltage, electric current, active power, reactive power, power factor, 2 to 31 subharmonic amplitudesAnd harmonic voltage and electric current resultant distortion rate, record minimum and maximum value and markers;
Within 10 cycles, judge systematic parameter resonance and harmonic resonance;
Send a secondary data to Surveillance center each second.
2,2. key equipment protection 2 of described step:
Trigger by the Real-Time Monitoring to the electricity supplying and using system quality of power supply and key equipment operating condition and event of failure, andTime starting protection equipment or switching device control system, realize corresponding protection or handoff functionality.
The setting valve of the voltage protection to key equipment is optimized, and the frequency converter of IGBT assembly is set up to band self-starting meritThe voltage shock avoiding module protection of energy, not losing under the prerequisite of frequency converter under-voltage protection effect, rationally increases delay time, escapesThe voltage flicker (in 20ms) that time is shorter.
Full factory frequency converter is cleared up, by out of service frequency converter little to non-technological requirement and effect, less to supplyingHumorous wave interference and the electric energy loss of electric system; The key equipment frequency converter of use is increased to frequency converter failure from exiting protectionMeasure, prevents that key equipment from tripping because of frequency converter failure;
Carry out quality control and protection by the supply voltage to frequency converter, rectification, inversion and capacitor group, improving it canBy property, solve the high problem of high voltage converter fault.
High-tension apparatus increases bus residual voltage protective device, bus over voltage protection and the quick-break of powerful device short trouble to be protectedProtect, while ensureing equipment fault, Local Switch fast shut-off in the cooperation time is adjusted in protection, reduces the shadow of this earth fault to electrical networkRing, solve overstep tripping problem.
3,3. electricity supplying and using system voltage pulsation inhibition and harmonic wave isolation 3 of described step:
Adopt zero transition procedue condition to detect and control technology, without electric discharge in the situation that, make dynamic electric voltage at capacitorApproach zero with the aperiodic component of electric current, thereby dynamic compensation reactive load power reduces system power, suppresses high-power loadThe voltage big ups and downs that start and stop cause; In the time there is parametric resonance and harmonic resonance in system, dynamically change systematic parameter, destroy humorousThe condition of shaking, solves parametric resonance and harmonic resonance problem;
For example should not install additional, under the occasion of dynamic reactive compensation device: the resistive load of long-distance cable access, needsInstall Special adding harmonic elimination apparatus additional.
Entrance at harmonic source is set up harmonic-wave isolation device, and this device is controlled three end equipment: anharmonic wave source, humorousWave source end and common port, by the part such as humorous wave damping and frequency electing and passing, voltage compensation and filtering compensation composition, make harmonic source pairIt is low resistive that the first-harmonic of system is, and harmonic wave is to high resistive, makes harmonic wave substantially be isolated in harmonic wave source, there will not be because capacitorOr cable amplification harmonic current, the phenomenon of pollution electrical network, makes the limit value of harmonic wave index far below national standard, thereby significantly subtractsThe harm of few harmonic wave.
4,4. key equipment safety interlocking and coordination control 4 of described step:
According to coking production technological requirement, key equipment and auxiliary equipment thereof are carried out to safety interlocking, prevent due to equipmentIt is improper to operate or move, and causes production process to be interrupted, and causes coke gas abnormal emission.
According to coking production technological requirement, by by controlling run parameter in safety zone, to key equipment and auxiliaryHelp equipment to carry out work and stand-by equipment switching operation and fault and stand-by equipment switching operation and coordinate to control, prevent due toEquipment operating is improper, causes production process to be interrupted, and causes coke gas abnormal emission.
According to coking production technological requirement, job order, time and power to relevant device carry out safety interlocking control,Prevent from occurring that duty changes the restriction that exceeds production technology operational factor in equipment or electrical source exchange process.
5,5. key equipment, power supply or circuit are uninterrupted without impacting dynamically switching 5 for described step:
By breaker or contactor is in parallel with electronic power switch forms dynamic change-over switch, at working power (or equipment)And working power (or equipment) is set respectively in stand-by power supply (or equipment) loop, and dynamically change-over switch and stand-by power supply (or are establishedStandby) dynamic change-over switch, if stand-by power supply (or equipment) is also in running order, working power (or equipment) and electricity for subsequent useBetween the bus of source (or equipment), set up the dynamic change-over switch of mother.
The work principle of breaker or contactor and electronic power switch is: electronic power switch dynamically switches, and avoids producingRaw overvoltage and overcurrent; Breaker or contactor quiescent operation, reduce electronic power switch power attenuation. That is: separating brake: open circuitThe first separating brake of device or contactor, electronic power switch automatic closing simultaneously, electronic power switch is breaker or contactor afterflow, whenWhen current over-zero, turn-off electronic power switch, prevent inductive load because dam, the overvoltage that the excessive generation of di/dt is larger. CloseLock: electronic power switch homophase first closes a floodgate the same period, after closing a floodgate successfully, then closes breaker or contactor, makes operating current through disconnectedRoad device or contactor are by power supply offered load. After breaker or contactor close a floodgate successfully, turn-off electronic power switch, reduce electricityThe power attenuation of power electronic switch. Handover operation divides following three kinds of situations:
1. working power (or equipment) and stand-by power supply (or equipment) handover operation: stand-by power supply (or equipment) homophase same periodFirst close a floodgate, separating brake after working power (or equipment), avoids the gap that has a power failure.
2. trouble power (or equipment) and stand-by power supply (or equipment) handover operation: according to 1. given event of failure of stepTriggering signal, the first separating brake of trouble power (or equipment), homophase asynchronous switch-on after stand-by power supply (or equipment), avoids fault coverage to expandGreatly.
3. when thering is the dynamic change-over switch of mother between working power (or equipment) and stand-by power supply (or equipment) busWorking power (or equipment) and stand-by power supply (or equipment) handover operation and trouble power (or equipment) and stand-by power supply (or are establishedStandby) when handover operation, stand-by power supply (or equipment) is in "on" position, the dynamic change-over switch operation principle of mother as situation 1. andThe stand-by power supply (or equipment) of situation in is 2. identical.
Two, coke gas abnormal emission is prevented and treated system
1, overall
As Fig. 2, native system comprises Real-Time Monitoring and event of failure triggering system 10, equipment protection system 20, voltage pulsationSuppress to impact dynamically and switch with harmonic wave shielding system 30, key equipment safety interlocking and coordinated control system 40 and uninterrupted nothingSystem 50, each system coordination work, realizes the whole synthesis of coke gas abnormal emission is administered.
Its connect and interactive relation be: the input of Real-Time Monitoring and event of failure triggering system 10 respectively with supply line(transformer station of 10kV supply line to coke-oven plant first and last end), stand-by power supply or two-way working power, transformer high-low-voltage side or electricityThe voltage transformer summation current transformer of source bus, key equipment and frequency conversion equipment is connected, carry out synchronous real-time data acquisition,The Real-Time Monitoring of the electricity supplying and using system quality of power supply and key equipment operating condition and fault message extract, and adopt event of failure to touchSend out interrupt mode output access device protection system 20, voltage pulsation inhibition and harmonic wave shielding system 30, key equipment peace respectivelyFull interlocking and coordinated control system 40 and the uninterrupted input without impacting dynamic switched system 50; Equipment protection system 20 HesVoltage pulsation inhibition and harmonic wave shielding system 30, except completing equipment of itself protection and improving the function of quality of voltage, also will be subject to realityThe event of failure of time monitoring and event of failure triggering system 10 triggers to be controlled. Key equipment safety interlocking and coordinated control system 40With and uninterrupted without impacting the input of dynamic switched system 50 and the output of Real-Time Monitoring and event of failure triggering system 10End is connected, and is triggered respectively and is controlled key equipment and frequency conversion equipment, stand-by power supply or two-way work electricity by its event of failureSource is connected with supply line's (transformer station of 10kV supply line to coke-oven plant first and last end), stand-by power supply or two-way working power,Realize switching over and the chain control of equipment operating of equipment and power supply.
2, subsystem
1) Real-Time Monitoring and event of failure triggering system 10:
Calculate fast list by high-speed synchronous data acquiring terminal, data processing unit, electric parameter and power quality indexUnit, fault message extraction unit, event of failure record cell and data upload and with the data of protection equipment and switching deviceThe part such as the Real-Time Monitoring work station of communication unit, the electricity supplying and using system quality of power supply and key equipment operating condition composition, passes throughInstantaneous voltage and electric current to each 10kV supply line head and end, transformer primary pair side, key equipment carry out high-speed synchronous numberAccording to collection, data processing, electric parameter and power quality index calculate fast, fault message extracts, event of failure record and andShi Shangchuan and with the data communication of protection equipment and switching device, realize the electricity supplying and using system quality of power supply and key equipment operationThe Real-Time Monitoring of operating mode and event of failure Trigger Function.
In half period, (10ms) judges overvoltage, overcurrent, voltage swells, rapid drawdown, 10kV line-to-ground or shortRoad fault, and extract fault message as event of failure triggering signal, adopt interrupt mode to send to protection equipment and switching deviceControl system;
Within 8 cycles, calculate voltage, electric current, active power, reactive power, power factor, 2 to 31 subharmonic amplitudesAnd harmonic voltage and electric current resultant distortion rate, record minimum and maximum value and markers;
Within 10 cycles, judge systematic parameter resonance and harmonic resonance;
Send a secondary data to Surveillance center each second.
2) equipment protection system 20:
Formed by frequency conversion protection, the part such as optimization and tripping operation restriction of adjusting, realize frequency converter, key equipment and power supply and openThe protection of the equipment such as pass. Frequency conversion protection config failure exits and the self-starting protection that has a power failure, moment low-voltage time delay 25ms protection, temporarilyState overvoltage absorbs protection, overcurrent protection and open-phase protection, ground protection, short-circuit protection etc. Adjust to optimize and comprise that key establishesThe amplitude of fault and the adjusting of time such as overvoltage, overcurrent, low-voltage, phase shortage, ground connection and short circuit such as standby, frequency converter, switchValue reasonable disposition, the reliabilty and availability of raising equipment, reduces fault outage probability. Tripping operation restricted passage is in frequency converter and passButton apparatus loop arranges rational fastp-acting fuse, guarantees, in the time that frequency converter and key equipment inside are short-circuited fault, can notCause upper level circuit breaker trip.
3) electricity supplying and using system voltage pulsation inhibition and harmonic wave isolation 30:
Formed by zero transition procedue dynamic reactive compensation device and harmonic-wave isolation device.
Zero transition procedue dynamic reactive compensation device adopts zero transition procedue condition to detect and control technology, capacitor withoutNeed, in the situation of electric discharge, make the aperiodic component of dynamic electric voltage and electric current approach zero, thereby dynamic compensation reactive load power to subtractLack system power, suppress the voltage big ups and downs that high-power load start and stop cause; When parametric resonance and harmonic resonance appear in systemTime, dynamically change systematic parameter, destroy condition of resonance, solve parametric resonance and harmonic resonance problem;
For example should not install additional, under the occasion of dynamic reactive compensation device: the resistive load of long-distance cable access, needsInstall Special adding harmonic elimination apparatus additional.
Harmonic-wave isolation device adopts harmonic wave isolation technology, sets up controlled three end equipment: anharmonic at the entrance of harmonic sourceWave source end, harmonic wave source and common port, by the part such as humorous wave damping and frequency electing and passing, voltage compensation and filtering compensation composition,Make harmonic source be low resistive to the first-harmonic of system, harmonic wave is to high resistive, make harmonic wave substantially be isolated in harmonic wave source, there will not beBecause capacitor or cable amplify harmonic current, pollute the phenomenon of electrical network, make the limit value of harmonic wave index far below national standard, fromAnd significantly reduce the harm of harmonic wave.
4) equipment protection system key equipment safety interlocking and coordinated control system 40:
By waiting, two-shipper switches, double source switches and safety interlocking part forms.
Two-shipper switches by being separately positioned on the cover electric power of two in two loops of work and key equipment for subsequent use or frequency converterElectronic switch and mechanical switch coordinate, and realize work and for subsequent use and fault and for subsequent use the cutting of two key equipments or frequency converterChange; When work is when for subsequent use switchings, the same period is closed back-up circuit in first phase-splitting, and phase-splitting disconnection work loop again after closing, prevents combined floodgateUnsuccessfully cause power failure. In the time of fault and switching for subsequent use, first phase-splitting open failure loop, after disconnection, phase-splitting is closed for subsequent use time the same period againRoad, prevents that fault from expanding.
Double source switches by being separately positioned on the cover electronic power switch of two in two loops of work and stand-by power supply and machineTool switch coordinates, and realizes the switching of two work and stand-by power supply and fault and stand-by power supply; When work and switching electricity for subsequent use, the same period is closed back-up circuit in first phase-splitting when in the source, phase-splitting disconnection work loop again after closing, and the unsuccessful power failure that causes prevents from closing a floodgate. WhenWhen fault and stand-by power supply switch, first phase-splitting open failure loop, after disconnection, the same period is closed back-up circuit in phase-splitting again, prevents that fault from expandingGreatly.
Electronic power switch and mechanical switch matching principle are that switch on-off operation control is completed by electronic power switch, anti-Only produce overvoltage and overcurrent; The normal operation of switch is completed by mechanical switch, prevents that electronic power switch from moving heating for a long time.
The safety interlocking that directly affects coke gas abnormal emission has: gas-blowing engine and auxiliary system thereof (oil pump and tuneSpeed mechanism); The work of key equipment or power supply (circuit) and switching for subsequent use, fault and switching for subsequent use; Coking production technological requirementOperational factor and limit value coordinate; The electric current of power switches at different levels and time setting coordinate; The setting of the various protections of frequency converter andParameter cooperation etc. The principle of safety interlocking is according to coking production technological requirement, job order, time and merit to relevant deviceRate is carried out safety interlocking control, prevents from occurring in equipment or electrical source exchange process that duty variation exceeds production technology operationThe restriction of parameter.
5) uninterrupted without impacting dynamic switched system 50:
Formed by parts such as waiting circuit switching and standby self-closing.
Circuit switching is by being separately positioned on the cover electronic power switch of two in work and two loops of 10kV circuit for subsequent useCoordinate with mechanical switch, realize the switching of work and 10kV circuit for subsequent use and fault and 10kV circuit for subsequent use; When work is with standbyWhile using circuit switching, Real-Time Monitoring and event of failure triggering system 10 trigger first phase-splitting by event of failure and close for subsequent use time the same periodRoad, phase-splitting disconnection work loop again after closing, the unsuccessful power failure that causes prevents from closing a floodgate. When fault and 10kV circuit switching for subsequent useTime, first phase-splitting open failure loop, after disconnection, the same period is closed back-up circuit in phase-splitting again, prevents that fault from expanding.
Standby self-closing is by being separately positioned on two covers in two loops of key equipment or frequency converter work and stand-by power supplyElectronic power switch and mechanical switch coordinate, and in the time of working power fault, Real-Time Monitoring and event of failure triggering system 10 are passed throughEvent of failure triggers and uninterrupted switches 5 without impacting dynamically, first phase-splitting open failure loop, and after disconnection, electricity for subsequent use is closed in phase-splitting the same period againResource loop, realizes not power-off of stand-by power supply without impacting from dropping into.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction. ThoughSo the present invention discloses as above with preferred embodiment, but not in order to limit the present invention. Any technology people who is familiar with this areaMember, is not departing from technical solution of the present invention scope situation, all can utilize the method for above-mentioned announcement and technology contents to the present inventionTechnical scheme is made many possible variations and modification, or is revised as the equivalent embodiment of equivalent variations. Therefore, every not disengagingThe content of technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, be equal toChange and modify, all still belonging in the scope of technical solution of the present invention protection.

Claims (12)

1. coke gas abnormal emission is prevented and treated a method, it is characterized in that, key equipment protection (2), electricity supplying and using system are setVoltage pulsation inhibition and harmonic wave isolation (3), key equipment safety interlocking are controlled (4), key equipment, power supply or circuit not with coordinationBe interrupted without impacting (5) four of dynamically switchings and control functional unit, by the electricity supplying and using system quality of power supply and key equipment operation workCondition Real-Time Monitoring and event of failure trigger (1) and drive four to control the corresponding work of functional unit startup; Under said method comprisesRow step:
Step 1, the electricity supplying and using system quality of power supply and key equipment operating condition Real-Time Monitoring and event of failure trigger (1), pass throughInstantaneous voltage and electric current to each 10kV supply line head and end, transformer primary pair side, key equipment carry out high-speed synchronous numberAccording to gathering and data processing, electric parameter and power quality index calculate fast, and fault message extracts, event of failure record and andShi Shangchuan and with the data communication of protection equipment and switching device, realize the electricity supplying and using system quality of power supply and key equipment operationThe Real-Time Monitoring of operating mode and event of failure Trigger Function;
Step 2, key equipment protection (2), is optimized by the setting valve of the voltage protection to key equipment, according to forThe Real-Time Monitoring of the electric system quality of power supply and key equipment operating condition and event of failure trigger, and start key equipment is protected in timeProtect with supply voltage, rectification, inversion and the capacitor group of frequency converter and carry out quality control and protection control, realize key equipment and protectProtective function;
Step 3, electricity supplying and using system voltage pulsation inhibition and harmonic wave isolation (3), set up zero transition procedue more a little louder in voltage pulsationDynamic reactive compensation device suppresses the voltage pulsation of electricity supplying and using system; Entrance at harmonic source is set up harmonic-wave isolation device, isolationThe harmonic wave of harmonic source, prevents humorous wave interference control and protection system; According to the electricity supplying and using system quality of power supply and key equipment operationThe Real-Time Monitoring of operating mode and event of failure trigger, and start in time the work of electricity supplying and using system voltage pulsation inhibition and harmonic wave isolation;
Step 4, key equipment safety interlocking with coordinate to control (4), according to coking production technological requirement, to key equipment andAuxiliary equipment is carried out safety interlocking, prevent due to equipment operating or move improper, cause production process interrupt, cause coke gasAbnormal emission; According to Real-Time Monitoring and the fault thing of service requirement and the electricity supplying and using system quality of power supply and key equipment operating conditionPart triggers, and starts in time and realizes key equipment safety interlocking and coordinated control function;
Step 5, key equipment, power supply or circuit are uninterrupted dynamically switches (5) without impacting, by breaker or contactor and electric powerThe dynamic change-over switch of electronic switch formation in parallel arranges respectively work in working power/equipment and stand-by power supply/equipment loopThe dynamic change-over switch of power supply/equipment and the dynamic change-over switch of stand-by power supply/equipment, if stand-by power supply/equipment is also in workState, sets up the dynamic change-over switch of mother between working power/equipment and stand-by power supply/equipment bus; According to service requirementTrigger with Real-Time Monitoring and the event of failure of the electricity supplying and using system quality of power supply and key equipment operating condition, start in time and realizeKey equipment, power supply or circuit are uninterrupted without impacting dynamic handoff functionality.
2. a kind of coke gas abnormal emission according to claim 1 is prevented and treated method, it is characterized in that, step 1 is for electricity consumptionSystem power quality and key equipment operating condition Real-Time Monitoring and event of failure trigger:
In half period, (10ms) judges overvoltage, overcurrent, voltage swells, voltage dip, 10kV line-to-ground or shortRoad fault, and extract fault message as event of failure triggering signal, adopt interrupt mode to send to protection equipment and switching deviceControl system;
Within 8 cycles, calculate voltage, electric current, active power, reactive power, power factor, 2 to 31 subharmonic amplitudes andHarmonic voltage and electric current resultant distortion rate, record minimum and maximum value and markers;
Within 10 cycles, judge systematic parameter resonance and harmonic resonance;
Send a secondary data to Surveillance center each second.
3. a kind of coke gas abnormal emission according to claim 1 is prevented and treated method, it is characterized in that, step 2 key is establishedStandby protection:
The setting valve of the voltage protection to key equipment is optimized, and sets up with self-starting function to the frequency converter of IGBT assemblyVoltage shock avoiding module protection, not losing under the prerequisite of frequency converter under-voltage protection effect, rationally increases delay time, escapes the timeShorter voltage flicker;
Full factory frequency converter is cleared up, by out of service frequency converter little to non-technological requirement and effect, less to supplying electric systemHumorous wave interference and the electric energy loss of system; The key equipment frequency converter of use is increased to frequency converter failure arranges from exiting protectionExecute, prevent that key equipment from tripping because of frequency converter failure;
Carry out quality control and protection by the supply voltage rectification to frequency converter, inversion and capacitor group, improve its reliability,Solve the high problem of high voltage converter fault;
High-tension apparatus increases bus residual voltage protective device, bus over voltage protection and powerful device short trouble fast tripping protection,While ensureing equipment fault, Local Switch fast shut-off in the cooperation time is adjusted in protection, reduces the impact of this earth fault on electrical network,Solve overstep tripping problem.
4. a kind of coke gas abnormal emission according to claim 1 is prevented and treated method, it is characterized in that, step 3 is for electricity consumptionSystem voltage fluctuation suppresses and harmonic wave isolation:
Adopt zero transition procedue condition to detect and control technology, without electric discharge in the situation that, make dynamic electric voltage and electricity at capacitorThe aperiodic component of stream approaches zero, thereby dynamic compensation reactive load power reduces system power, suppresses high-power load start and stopThe voltage big ups and downs that cause; In the time there is parametric resonance and harmonic resonance in system, dynamically change systematic parameter, destroy resonance barPart, solves parametric resonance and harmonic resonance problem;
Under this occasion that should not install dynamic reactive compensation device additional of resistive load of long-distance cable access, need to install additionalSpecial adding harmonic elimination apparatus, solves parametric resonance and harmonic resonance problem;
Entrance at harmonic source is set up harmonic-wave isolation device, and this device is controlled three end equipment: anharmonic wave source, harmonic sourceEnd and common port, consist of humorous wave damping and frequency electing and passing, voltage compensation and filtering compensation part, makes harmonic source to systemIt is low resistive that first-harmonic is, and harmonic wave is to high resistive, makes harmonic wave substantially be isolated in harmonic wave source, there will not be because capacitor or cableAmplify harmonic current, pollute the phenomenon of electrical network, make the limit value of harmonic wave index far below national standard, thereby reduce the danger of harmonic waveEvil.
5. a kind of coke gas abnormal emission according to claim 1 is prevented and treated method, it is characterized in that, step 4 key is establishedStandby safety interlocking is controlled with coordination:
According to coking production technological requirement, key equipment and auxiliary equipment thereof are carried out to safety interlocking, prevent due to equipment operatingOr move improper, cause production process interrupt, cause coke gas abnormal emission;
According to coking production technological requirement, by by controlling run parameter in safety zone, to key equipment and auxiliary establishing thereofCoordinate to control for carrying out work and stand-by equipment switching operation and fault and stand-by equipment switching operation, prevent due to equipmentMisoperation, causes production process to be interrupted, and causes coke gas abnormal emission;
According to coking production technological requirement, job order, time and power to relevant device carry out safety interlocking control, preventIn equipment or electrical source exchange process, occur that duty changes the restriction that exceeds production technology operational factor.
6. a kind of coke gas abnormal emission according to claim 1 is prevented and treated method, it is characterized in that, step 5 key is establishedStandby, power supply or circuit are uninterrupted to be switched without impacting dynamically:
The work principle of breaker or contactor and electronic power switch is: electronic power switch dynamically switches, and avoids producingVoltage and overcurrent; Breaker or contactor quiescent operation, reduce electronic power switch power attenuation; That is: separating brake: breaker orThe first separating brake of contactor, electronic power switch automatic closing simultaneously, electronic power switch is breaker or contactor afterflow, works as electric currentWhen zero passage, turn-off electronic power switch, prevent inductive load because dam, the overvoltage that the excessive generation of di/dt is larger; Close a floodgate:Electronic power switch homophase first closes a floodgate the same period, after closing a floodgate successfully, then closes breaker or contactor, makes operating current through breakerOr contactor is by power supply offered load; After breaker or contactor close a floodgate successfully, turn-off electronic power switch, reduce electric power electricityThe power attenuation of sub-switch;
Described key equipment, power supply or circuit are uninterrupted without impacting in dynamic switch step, and handover operation is specific as follows:
Operation one: working power/equipment and stand-by power supply/equipment handover operation: stand-by power supply/equipment homophase first closes a floodgate the same period,Separating brake after working power/equipment, avoids the gap that has a power failure;
Operation two: trouble power/equipment and stand-by power supply/equipment handover operation: the event of failure given according to operation one triggersSignal, the first separating brake of trouble power/equipment, homophase asynchronous switch-on after stand-by power supply/equipment, avoids fault coverage to expand;
Operation three: the work electricity between working power/equipment and stand-by power supply/equipment bus with the dynamic change-over switch of motherWhen source/equipment and stand-by power supply/equipment handover operation and trouble power/equipment and stand-by power supply/equipment handover operation, for subsequent usePower supply/equipment is in "on" position, stand-by power supply in the dynamic change-over switch operation principle of mother biconditional operation one and operation two/establishStandby identical.
7. the coke gas abnormal emission that implements the claims method described in 1 is prevented and treated a system, it is characterized in that, comprises in real timeMonitoring and event of failure triggering system (10), equipment protection system (20), voltage pulsation inhibition and harmonic wave shielding system (30), passButton apparatus safety interlocking and coordinated control system (40) and uninterrupted without impacting dynamic switched system (50), each system coordination workDo, realize the whole synthesis of coke gas abnormal emission is administered;
Its connect and interactive relation be: the input of Real-Time Monitoring and event of failure triggering system (10) respectively with 10kV supply lineTransformer station to coke-oven plant first and last end, stand-by power supply or two-way working power, transformer high-low-voltage side or power source bus, key equipmentAnd the voltage transformer summation current transformer of frequency conversion equipment is connected, carry out synchronous real-time data acquisition, electricity supplying and using system electric energyThe Real-Time Monitoring of quality and key equipment operating condition and fault message extract, and adopt event of failure to trigger interrupt mode outputAccess device protection system (20), voltage pulsation inhibition and harmonic wave shielding system (30), key equipment safety interlocking and association respectivelyAdjust control system (40) and the uninterrupted input without impacting dynamic switched system (50); Equipment protection system (20) and voltageFluctuation suppresses protect and improve the function of quality of voltage except completing equipment of itself with harmonic wave shielding system (30), also will be subject in real timeThe event of failure of monitoring and event of failure triggering system (10) triggers to be controlled; Key equipment safety interlocking and coordinated control systemAnd and uninterrupted input and Real-Time Monitoring and event of failure triggering system without impacting dynamic switched system (50) (40)(10) output is connected, by its event of failure trigger respectively with control key equipment and frequency conversion equipment, stand-by power supply orTwo-way working power is connected with transformer station of 10kV supply line to coke-oven plant first and last end, stand-by power supply or two-way working power,Realize switching over and the chain control of equipment operating of equipment and power supply.
8. a kind of coke gas abnormal emission according to claim 7 is prevented and treated system, it is characterized in that:
Described Real-Time Monitoring and event of failure triggering system (1) are by high-speed synchronous data acquiring terminal, data processing unit, electricThe quick computing unit of parameter and power quality index, fault message extraction unit, event of failure record cell and data upload withAnd with the reality of data communication units, the electricity supplying and using system quality of power supply and the key equipment operating condition of protection equipment and switching deviceTime monitoring station part composition, instantaneous by each 10kV supply line head and end, transformer primary pair side, key equipmentVoltage and current carries out high-speed synchronous data acquiring and data processing, and electric parameter and power quality index calculate fast, faultInformation extraction, event of failure record and upload in time and with the data communication of protection equipment and switching device, realize for electricity consumptionThe Real-Time Monitoring of system power quality and key equipment operating condition and event of failure Trigger Function;
When Real-Time Monitoring and event of failure triggering system (10) work:
In half period, (10ms) judges overvoltage, overcurrent, voltage swells, voltage dip, 10kV line-to-ground or shortRoad fault, and extract fault message as event of failure triggering signal, adopt interrupt mode to send to key equipment protection (2), supplyUsing electricity system voltage pulsation inhibition and harmonic wave isolation (3), key equipment safety interlocking are controlled (4) key equipment, power supply with coordinationOr circuit is uninterrupted without impacting the control system of dynamically switching (5), starts the corresponding function of controlling;
Within 8 cycles, calculate voltage, electric current, active power, reactive power, power factor, 2 to 31 subharmonic amplitudes andHarmonic voltage and electric current resultant distortion rate, record minimum and maximum value and markers;
Within 10 cycles, judge systematic parameter resonance and harmonic resonance;
Send a secondary data to Surveillance center each second.
9. a kind of coke gas abnormal emission according to claim 7 is prevented and treated system, it is characterized in that:
Described equipment protection system (20) by frequency conversion protection, adjust and optimize and tripping operation restricted part forms, realize frequency converter, keyThe protection of equipment and power switch equipment; Frequency conversion protection config failure exits and the self-starting protection that has a power failure, moment low-voltage prolongTime 25ms protection, transient overvoltage absorb protection, overcurrent protection and open-phase protection, ground protection, short-circuit protection; The optimization of adjustingComprise amplitude and the time of key equipment, frequency converter, switch overvoltage, overcurrent, low-voltage, phase shortage, ground connection and short troubleSetting valve reasonable disposition, improve the reliabilty and availability of equipment, reduce fault outage probability; Tripping operation restricted passage is in frequency conversionDevice and key equipment loop arrange rational fastp-acting fuse, guarantee the fault that is short-circuited in frequency converter and key equipment insideTime, can not cause upper level circuit breaker trip.
10. a kind of coke gas abnormal emission according to claim 7 is prevented and treated system, it is characterized in that:
Described electricity supplying and using system voltage pulsation inhibition and harmonic wave isolation (30) are by zero transition procedue dynamic reactive compensation device harmonyRipple spacer assembly composition;
Zero transition procedue dynamic reactive compensation device adopts zero transition procedue condition to detect and control technology, at capacitor without puttingIn the situation of electricity, make the aperiodic component of dynamic electric voltage and electric current approach zero, thereby dynamic compensation reactive load power reduce systemSystem electric current, suppress the voltage big ups and downs that high-power load start and stop cause; In the time that parametric resonance and harmonic resonance appear in system, movingState changes systematic parameter, destroys condition of resonance, solves parametric resonance and harmonic resonance problem;
Installing additional under the occasion of dynamic reactive compensation device, need to install Special adding harmonic elimination apparatus additional;
Harmonic-wave isolation device adopts harmonic wave isolation technology, sets up controlled three end equipment: anharmonic wave source at the entrance of harmonic sourceEnd, harmonic wave source and common port, by humorous wave damping and frequency electing and passing, voltage compensation and filtering compensation part composition, make harmonic waveSource is low resistive to the first-harmonic of system, and harmonic wave is to high resistive, makes harmonic wave substantially be isolated in harmonic wave source, there will not be because electricityContainer or cable amplify harmonic current, pollute the phenomenon of electrical network, make the limit value of harmonic wave index far below national standard, thereby reduceThe harm of harmonic wave.
11. a kind of coke gas abnormal emissions according to claim 7 are prevented and treated system, it is characterized in that:
Described equipment protection system key equipment safety interlocking and coordinated control system (40) are switched and peace by two-shipper switching, double sourceFull interlocking part composition;
Two-shipper switches by being separately positioned on the cover power electronics of two in two loops of work and key equipment for subsequent use or frequency converterSwitch and mechanical switch coordinate, and realize the work of two key equipments or frequency converter and for subsequent use and fault and switching for subsequent use;When work is when for subsequent use switchings, the same period is closed back-up circuit in first phase-splitting, and phase-splitting disconnection work loop again after closing, prevents that combined floodgate from not becomingMerit causes power failure; In the time of fault and switching for subsequent use, first phase-splitting open failure loop, after disconnection, back-up circuit is closed in phase-splitting the same period again,Prevent that fault from expanding;
Double source switches by being separately positioned on the cover electronic power switch of two in two loops of work and stand-by power supply and machinery to be openedClose and coordinate, realize the switching of two work and stand-by power supply and fault and stand-by power supply; In the time of work and Switching power for subsequent use,The same period is closed back-up circuit in first phase-splitting, phase-splitting disconnection work loop again after closing, and the unsuccessful power failure that causes prevents from closing a floodgate; When fault withWhen stand-by power supply switches, first phase-splitting open failure loop, after disconnection, the same period is closed back-up circuit in phase-splitting again, prevents that fault from expanding;
Electronic power switch and mechanical switch matching principle are that switch on-off operation control is completed by electronic power switch, prevent from producingRaw overvoltage and overcurrent; The normal operation of switch is completed by mechanical switch, prevents that electronic power switch from moving heating for a long time;
The principle of safety interlocking is according to coking production technological requirement, and job order, time and power to relevant device carry outSafety interlocking control, prevents from occurring in equipment or electrical source exchange process that duty changes exceeds production technology operational factorRestriction.
12. a kind of coke gas abnormal emissions according to claim 7 are prevented and treated system, it is characterized in that:
Described uninterrupted nothing is impacted dynamic switched system (50) and is made up of circuit switching and standby self-closing part;
Circuit switching is by being separately positioned on the cover electronic power switch of two in work and two loops of 10kV circuit for subsequent use and machineTool switch coordinates, and realizes the switching of work and 10kV circuit for subsequent use and fault and 10kV circuit for subsequent use; When work and sidingWhen switch on road, Real-Time Monitoring and event of failure triggering system (10) trigger first phase-splitting by event of failure and close back-up circuit the same period,Phase-splitting disconnection work loop again after closing, the unsuccessful power failure that causes prevents from closing a floodgate; In the time of fault and 10kV circuit switching for subsequent use, firstPhase-splitting open failure loop, after disconnection, the same period is closed back-up circuit in phase-splitting again, prevents that fault from expanding;
Standby self-closing is by being separately positioned on the cover electric power of two in two loops of key equipment or frequency converter work and stand-by power supplyElectronic switch and mechanical switch coordinate, and in the time of working power fault, Real-Time Monitoring and event of failure triggering system (10) are by eventBarrier Event triggered is uninterrupted dynamically switches (5) without impacting, first phase-splitting open failure loop, and after disconnection, electricity for subsequent use is closed in phase-splitting the same period againResource loop, realizes not power-off of stand-by power supply without impacting from dropping into.
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