CN101552491A - Integrated energy saving system of power supply and distribution system - Google Patents
Integrated energy saving system of power supply and distribution system Download PDFInfo
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- CN101552491A CN101552491A CNA200910015649XA CN200910015649A CN101552491A CN 101552491 A CN101552491 A CN 101552491A CN A200910015649X A CNA200910015649X A CN A200910015649XA CN 200910015649 A CN200910015649 A CN 200910015649A CN 101552491 A CN101552491 A CN 101552491A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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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
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/22—Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
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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
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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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
- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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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
- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
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Abstract
The invention relates to an integrated energy saving system of a power supply and distribution system, wherein all energy saving devices and power quality control devices of the power supply and distribution system are integrated to form the integrated energy saving system which implements unified control to cause the power supply and distribution system to always run in the most economical manner; in every subsystem, all the energy saving devices are unified to work coordinately and cooperatively so that the distribution network can achieve the best energy saving effect. The integrated energy saving system structurally comprises a supervisory computer monitoring module, a communication module and a plurality of execution submodules; the supervisory computer monitoring module carries out visual and real-time control to the whole system and adopts a mass memory device and a large management database; the communication module adopts the Ethernet, a fieldbus and wireless communication device and other modules of the system for communication; the execution submodules comprise a comprehensive series-control energy saving device, a configuration monitoring device, a fieldbus device, a reactive power compensation device, a voltage stabilizing device, a harmonic wave regulating device, a frequency control device and an intelligent box-type substation device.
Description
Technical field:
The present invention relates to a kind of large-scale power system comprehensive energy-saving system, particularly a kind of integrated energy saving system of power supply and distribution system.
Background technology:
At present, there are huge waste of energy in electric power system and distribution system, battery saving arrangement on the market, reactive power compensator, harmonic treating apparatus, frequency-converter device are except technology is not high, and maximum problem is exactly single separately operation, can not cooperation work, caused the non-constant of whole energy effect, for example, reactive power compensator can not be worked as required in electric power system, not to owe to mend, be exactly to mend, and so just caused the active loss of transmission line, a large amount of waste of energy are on power circuit, no merits and demerits are mended the voltage that raise again, and power consumption equipment has been caused potential threat.In distribution system, a large amount of low-voltage equipments and cable have been used, low-voltage distributing line is many more, electric energy loss is just big more, also has traditional powering mode to adopt centralized powering mode, high-tension electricity is become low tension after, divide a lot of branch roads again, low tension is delivered to the user, and low-voltage circuit is long more, and line loss is big more.This pattern has caused the huge loss of electric energy.
Current electric power system and distribution system be independent operating separately, the management system of current use does not get up to manage two systematic unities, specifically refer to be exactly each battery saving arrangement not to be united, unified control, caused energy-saving effect poor, reactive power flow and harmonic wave are run helter-skelter in electrical networks at different levels, threaten the power system stability operation.
Summary of the invention:
Purpose of the present invention is exactly in order to overcome the above problems, the various energy savers and the quality of power supply smelting reason device of electric power system and distribution system are united, form a big energy conserving system, the various battery saving arrangement operations of unified scheduling electric power system and distribution system make the most economical all the time operation of power supply-distribution system.For each subsystem, it is united various battery saving arrangements among a small circle again, and cooperation work reaches good energy-conservation effect, can also improve the quality of electric energy simultaneously.
For achieving the above object, the present invention adopts following technical scheme:
A kind of integrated energy saving system of power supply and distribution system, it comprises ipc monitor module, communication module and at least one Executive Module; Wherein, the ipc monitor module is carried out visual and real time implementation control for adopting the configuration simulation computer of configuration emulation technology to whole system, and simultaneous computer also adopts high-capacity storage and large-scale management database;
Communication module is for adopting the server of LAMP software, and communication module also adopts the ethernet communication module by fieldbus and other module communications by wireless communication apparatus and system;
Executive Module comprises at least one subsystem, each subsystem comprise integrated suites control battery saving arrangement, configuration monitoring device, fieldbus devices, reactive power compensator, stable-pressure device, harmonic treating apparatus, RHVC and intelligent box become in the device at least one or a plurality of.
Described fieldbus is the CAN bus.
Described reactive power compensator comprises TSC thyristor switchable capacitor device, SVC static compensation device and SVG reacance generator; Wherein, the main circuit of SVG reacance generator is from the commutation bridge circuit, it is idle that the real-time tracking compensation changes, it comprises one group of transducer, and transducer is connected with measurement mechanism, and measurement mechanism is connected with control device, control device is connected with drive circuit, drive circuit is connected with inverter by optical fiber, and inverter is connected with electrical network, and inverter also is connected with filter simultaneously; SVC static compensation device adopts TCR type SVC device, and what TSC thyristor series capacitor device adopted is thyristor series capacitor.
Described stable-pressure device is the VOC stable-pressure device.
Described harmonic treating apparatus is an active filter, and it comprises the harmonic measure circuit, and this harmonic measure circuit is by the harmonic content of PT or CT measuring system, carry out Fourier analysis after, data are sent into control circuit; Control circuit then is connected with inverter; Equal and opposite in direction in inverter generation and the system, the harmonic wave that direction is opposite is injected in the system; Simultaneously inverter also gushes resistor group and is connected with high pass filter with anti-; the anti-resistor group of gushing is the dc capacitor charging earlier before device starts; protection voltage is to the impact of dc capacitor, and high pass filter is used for the high order harmonic component in the absorption system, and protection system voltage is to the impact of inverter.
Described harmonic treating apparatus is for mixing the parallel connection type active filter, adopted active filter I and passive filter I parallel connection to be linked in the electrical network, both unified controls, utilize the fixing low-order harmonic of the most of amplitude of passive filter I filtering, utilize active filter I to absorb the high order harmonic component that other amplitude changes; Wherein active filter I is an inverter, and the direct voltage at inverter inversion direct current electric capacity two ends produces capacitive and perceptual compensating reactive power electric current, and inverter is parallel on the electrical network by reactor.
Described harmonic treating apparatus is for mixing the series connection type active filter, it comprises the passive filtering II and the active filter II of mutual series connection, passive filter II is connected with expander, measuring circuit is connected with electrical network, detection signal is sent into controller, the controller control Driver Circuit, and drive circuit then drives active filter II, active filter II also is connected with expander simultaneously, and wherein active filter II is the inverter of SVG reacance generator.
Described harmonic treating apparatus is a passive filtration unit; Described RHVC is a current phasor type frequency converter.
Described intelligent box becomes device and comprises casing, in casing, be provided with intelligent switch, the input power supply at first inserts intelligent switch, intelligent switch is connected with transformer, transformer is connected with supervising device, protective relaying device, reactive power compensator, regulator and active filter I respectively, and voltage-regulating system is connected with load; In casing, also be provided with lightning arrester and communicator.
Described inverter comprises an inverter of being made up of the IGBT module of one group of parallel connection, and this inverter is in parallel with dc capacitor, and dc capacitor supports voltage for inverter provides a direct current; The direct voltage at inverter inversion direct current electric capacity two ends produces capacitive and perceptual compensating reactive power electric current, and each IGBT module is connected with a corresponding reactor respectively in the inverter.
Integrated energy saving system of power supply and distribution system mainly contains three parts composition among the present invention: the ipc monitor module, communication module and at least one Executive Module, wherein Executive Module comprises at least one subsystem, each subsystem comprises: integrated suites control battery saving arrangement, the configuration monitoring device, fieldbus devices, reactive power compensator, stable-pressure device, harmonic treating apparatus, RHVC and intelligent box become one or more in the device, they can be used as intelligent power supply energy-saving system, intellectuality industry energy conservation system, intellectual communityintellectualized village's energy conserving system, the Ground Connection in Intelligent Building energy conserving system, intelligent illumination power saving system, intelligent communication energy conserving system, intelligent commercial energy conserving system (supermarket, school, hospital), intelligent communication energy conserving system, intelligent electric railroad system etc.
The ipc monitor module is a large-scale real-time management system among the present invention, and its innovative point has adopted high performance configuration emulation technology, and the physical aspect of real simulation device has realized that the action of device is visual, real-time controlization etc.; Also adopted the mass memory technology, can store the historical data more than 3 years, it has also adopted large-scale management database.The communication system that adopted the innovative point of communications portion has adopted open source software LAMP (Linux+Apache+Mysql+Perl/PHP/Python), one group of open source software that is commonly used to build dynamic website or server, it itself all is program independently separately, but because often be brought together use, have more and more higher compatibility, formed a powerful web application platform jointly.The server that utilizes LAMP to build, real-time, reliability, stability improves greatly, for power supply-distribution system provides very high technical advantage.Each subsystem can be used separately as intelligent power supply energy-saving system, intellectuality industry energy conservation system, intellectual communityintellectualized village's energy conserving system, Ground Connection in Intelligent Building energy conserving system, intelligent illumination power saving system, intelligent communication energy conserving system, intelligent commercial energy conserving system (supermarket, school, hospital), intelligent communication energy conserving system, intelligent electric railroad system etc.
The invention has the beneficial effects as follows: it unites electric power system and distribution system, forms a big energy conserving system, and unified scheduling electric power system and distribution system operation make it most economical all the time operation.For each subsystem, it is united various devices again, and cooperation work comprehensively solves variety of issue.
Description of drawings:
Fig. 1 is a structured flowchart of the present invention;
Fig. 2 is a SVG reacance generator structured flowchart;
Fig. 3 is the active filter structural representation;
Fig. 4 is a mixed active filter structural representation;
Fig. 5 is another kind of mixed active filter structural representation;
Fig. 6 becomes the apparatus structure schematic diagram for intelligent box.
Wherein, 1. ipc monitor module, 11. configuration simulation computers; 12. high-capacity storage and large-scale management database; 2. communication module, 21. servers, 22. ethernet communication modules; 23. wireless communication apparatus; 3. subsystem, 31. integrated suites control battery saving arrangement, 32. configuration monitoring devices; 33. fieldbus devices; 34. reactive power compensator, 341. switching capacitance devices, 342.SVC static compensation device; 343.SVG reacance generator; 3431.IGBT the module group, 3432. dc capacitors, 3433. reactors; 3434. transducer; 3435. measurement mechanism, 3436 control device, 3437. drive circuits; 3438. filter; 35. stable-pressure device, 36. harmonic treating apparatus, 361. active filters; 3611. harmonic measure circuit; 3612.PT device, 3613. control circuits, the 3614. anti-resistor group of gushing; 3615. high pass filter; 362. the mixing active filter, 3621. passive filter II, 3622. active filter II; 3623. drive circuit; 3624. controller, 3625. measuring circuits, 3626. expanders; 3627. active filter I; 3638. passive filter I, 363. passive filtration units, 37. RHVC; 38. intelligent box becomes device; 381. intelligent switch, 382. transformers, 383. metering devices; 384. protective relaying device; 385. reactive power compensator, 386. regulators, 387. active filter I; 388. controller, 389. communicators.
Embodiment:
The invention will be further described with enforcement below in conjunction with accompanying drawing.
Among Fig. 1, it comprises ipc monitor module 1, communication module 2 and Executive Module; Wherein, ipc monitor module 1 is carried out visual and real time implementation control for adopting the configuration simulation computer 11 of configuration emulation technology to whole system, and ipc monitor module 1 also adopts high-capacity storage and large-scale management database 12 simultaneously;
Communication module 2 is for adopting the server 21 of LAMP software, and it adopts ethernet communication module 22 to utilize other each module communications of existing C AN fieldbus and wireless communication apparatus 23 and system;
Executive Module is made up of several subsystems 3, and each subsystem 3 includes integrated suites control battery saving arrangement 31, configuration monitoring device 32, fieldbus devices 33, reactive power compensator 34, stable-pressure device 35, harmonic treating apparatus 36, RHVC 37 and intelligent box and becomes device 38.
Communication module 2 adopts LAMP server 21, communication system adopts 3g wireless public network or LAMP (Linux+Apache+Mysql+Perl/PHP/Python), utilize ethernet communication module 22 by CAN bus and wireless communication apparatus 23, carry out communication with all the other each modules of system.
Among Fig. 2, the main circuit of SVG reacance generator 343 is from the commutation bridge circuit, it is idle that the real-time tracking compensation changes, it comprises one group of transducer 3434, transducer 3434 is connected with measurement mechanism 3435, measurement mechanism 3435 is connected with control device 3436, control device 3436 is connected with drive circuit 3437, drive circuit 3437 is connected with inverter by optical fiber, inverter is connected with electrical network, inverter also is connected with filter 3438 simultaneously, and inverter is in parallel with dc capacitor 3432, and dc capacitor 3432 supports voltage for inverter provides a direct current; The direct voltage at inverter inversion direct current electric capacity 3432 two ends produces capacitive and perceptual compensating reactive power electric current, and each IGBT module group 3431 is connected with a corresponding reactor 3433 respectively in the inverter.
Stable-pressure device 35 is the VQC device, and technology maturation is mainly used to guarantee the quality of voltage, ensures the safe and reliable operation of power consumption equipment.
Among Fig. 3, harmonic treating apparatus 36 is an active filter 361, and it comprises harmonic measure circuit 3611, and this harmonic measure circuit 3611 is by the harmonic content of PT device 3612 measuring systems, carry out Fourier analysis after, data are sent into control circuit 3613; 3613 of control circuits are connected with inverter; Inverter adopts the inverter of SVG reacance generator 343, reactor 3433 inverter is produced with system in equal and opposite in direction, the harmonic wave that direction is opposite is injected in the system; Simultaneously inverter also gushes resistor group 3614 and is connected with high pass filter 3615 with anti-; the anti-resistor group 3614 of gushing is dc capacitor 3432 chargings earlier before device starts; protection voltage is to the impact of dc capacitor 3432; high pass filter 3615 is used for the high order harmonic component in the absorption system, and protection system voltage is to the impact of inverter.
Among the present invention, active filter does not re-use filter capacitor and filter reactance as filter, but the inverter circuit that the electrification electronic device is formed means by way of compensation, as the IGBT module, the IGCT module, the IPM module, measuring circuits such as GTO module are by the harmonic content in the PT measuring system, after having passed through Fourier analysis, data are offered control circuit, the data that control circuit provides according to measuring circuit, accurately trigger inverter, equal and opposite in direction in generation and the system, the harmonic wave that direction is opposite is injected in the system by reactor 3433.The effect of inrush current prevention resistor group 3614 mainly is; earlier dc capacitor 3432 chargings before device starts; protection voltage is to the impact of dc capacitor 3432, and the high pass filter 3615 of device mainly is to be used for high order harmonic component in the absorption system, and protection system voltage is to the impact of inverter.Control section and measure portion, two-part core all are digital signal processor DSPs fast, and the each harmonic content in the detection system offers control circuit rapidly and accurately.Control circuit is according to detecting data, according to high-efficient algorithm, and control inverter.Its performance is as described below:
1 dynamic compensation power system reactive power, transient response time is less than 1ms;
2 dynamic compensations 2---60 subharmonic;
3 can provide certain active power, compensation network electric voltage dropping and flickering moment;
4 compensating three-phase unbalances;
5 can move after being incorporated into the power networks automatically, do not need personnel operation;
6 Chinese graphic lcds show the clear close friend of man-machine interface;
7 have perfect self diagnosis and function for monitoring, can specifically locate fault, convenient debugging.
Among Fig. 4, harmonic treating apparatus is a mixed active filter 362, it comprises active filter I3627 and the passive filter I3628 that is connected in parallel on the electric power system, and active filter I3627 is connected with controller 3624, also is parallel with high pass filter simultaneously on electric power system; Wherein active filter I3627 is the inverter of SVG reacance generator 343.Passive filtering and active power filtering are joined together, and the two advantage is given full play in unified control, utilizes the harmonic wave of passive filtering filtering low order, utilizes the high order harmonic component in the active filter filtering appts, and the passive filtering part is idle in can also bucking-out system.High pass filter is used for protecting the active filter part.
Among Fig. 5, harmonic treating apparatus is a mixed active filter 362, it comprises the passive filter II3621 and the active filter II3622 of mutual series connection, passive filter II3621 is connected with expander 3626, measuring circuit 3625 is connected with electrical network, detection signal is sent into controller 3624, controller 3624 control Driver Circuit 3623,3623 driving active filters of drive circuit II3622, active filter II3622 also is connected with expander 3626 simultaneously, and wherein active filter II3622 is the inverter of SVG reacance generator 343.Active filter II3622 and passive filter II3621 are together in series, and passive part and electrical network are connected to together, and the purpose of doing like this is to improve the voltage endurance capability of active power filtering greatly.
Mixed active filtering is compensating reactive power both, again compensation harmonic; Overcome the L-C filter and be subject to electric network impedance influence, easily and the shortcoming of electric network impedance generation resonance; Active filter does not bear the fundamental voltage in grid alternating current source, and installed capacity is little; Active, passive mixing is used, and gives full play to passive and active advantage separately, makes that the complete sets of equipment capacity is big, cost is low, performance is good; Hybrid active filter active filter and passive filter are joined together utilizes passive filter filtering content bigger, and the low-order harmonic of fixed number of times utilizes active filter to eliminate other high order harmonic component.
Passive filtration unit 363 adopts conventional passive filter.
Among Fig. 6, intelligent box becomes device 38 and comprises casing, in casing, be provided with intelligent switch 381, the input power supply at first inserts intelligent switch 381, intelligent switch 381 is connected with transformer 382, transformer 382 is connected with metering device 383, microcomputer protecting device 384, reactive power compensator 385, regulator 386 and active filter I387 respectively, and voltage-regulating system 386 is connected with load; In casing, also be provided with controller 388 and communicator 389.
Intellectual case change is divided into a plurality of kinds according to the electricity consumption characteristics, as sub-district usefulness, and factory's usefulness, electric railway usefulness, later on according to the increase of load, again being used in combination more.Have reactive power compensation and harmonic wave control function, suppress the flickering of the fluctuation of three-phase imbalance and voltage.Has the telemechanical controlled function.Intelligent box becomes use capable of being combined.
The voltage of electrical network enters transformer through intelligent switch, and intelligent switch is the combination switch of company's independent development, has overload, overvoltage, and overcurrent protection can be accepted the soft control of control section, has the function of automatic divide-shut brake.Electric energy is through behind the transformer, can cross and the dynamic reactive compensation device and the active filter of transformers connected in parallel, outputs to the user, and voltage-regulating system can be according to the characteristics of customer charge, and automatic Regulation has guaranteed the quality of powering.The entire work process of device is all worked under the monitor portion monitoring, uploads to the control centre by communicator, the work that remote controlled case becomes.The relaying protection part can guarantee the operation of whole device safety, and protection is reliable, not malfunction.The intelligent box change has following technical advantage:
Realized self-closing, perforation power system design high reliability.20 years freedom from repairs of whole system.Hermetically sealed, all insulation of high pressure does not have exposed electric position.Unique design is self-closing, the perforation ring main unit.High-low pressure core devices imported with original packaging.Multiple power supplies is hauled oneself willingly into, the high compact conformation of reliability, and reasonable in design, volume is extra small, and is elegant in appearance.Adopt the double-layer seal anti-corrosion box, product degree of protection height.Standardization of products design, internal components interchangeability is strong.Can realize the duplicate supply remote monitoring, the automaticity height.
System of the present invention comprises various battery saving arrangements and power quality controlling device come in, and is not simply to couple together, and its operation principle and process are as follows:
For whole system, preferentially drop into from the nearest energy saver of power consumption equipment, reactive power compensator for example, drop into earlier with device and random back-off, drop into centralized compensation and line build-out again, in-situ balancing is idle as far as possible, and it is mobile to the electrical network of upper level that strict control is idle, and energy-saving effect is improved greatly.When random back-off with after with the whole inputs of device compensation, idle that electrical network needs accurately calculates in system, drops into centralized compensation and line build-out, and whole electrical network is both only mended, and also can not owe benefit.
Now the synthesis energy saving with a smelter illustrates its course of work:
What smelter was common has with equipment: power-equipments such as various motors, blower fan water pump equipment, industrial sewing machine equipment, electric welding machine, driving; Arc furnace equipment, intermediate frequency furnace equipment, punching press with forge pressure equipment metallurgical equipment etc., lighting apparatus, refrigeration plant.
The economize on electricity of power-equipments such as motor, usefulness be vector converter device and reactive power compensator, active filter.During electric motor starting, can produce a very big starting current, motor and supply line are in the electric motor starting process, and electric energy loss is very big, and be also very big to the impact of electrical network, when adding vector converter, the starting of motor becomes the mode of soft start, and in this start-up course, the electric current of generation is very little, energy-conservation on the one hand, avoid impact on the other hand to electrical network.
Motor in the course of the work, mostly load variations is bigger, when load hour, if motor is not controlled, still under the situation of big merit power, move, caused the phenomenon of so-called " low load with strong power ", cause the significant wastage of electric energy.When adding vector converter, the motor survey meter of frequency converter is monitored in real time to the loading condition of motor, allows frequency converter give power input to a machine and the required bearing power coupling of output all the time, has reached good energy-saving effect.
Frequency converter can not improve power factor, be control to power, the perceptual idle of motor generation is very large, so also will install reactive power compensator additional, free device herein is equilibrated at power factor on the motor electrical network nearby if the not frequent startup of motor can be selected the TSC device for use, do not allow idle scurrying in the electrical network, this a part of energy-saving effect also is clearly.
Inverter Application certainly leads to harmonic wave; can not be because of energy-conservation and cause the decline of quality of voltage; miscellaneous equipment is worked the mischief; so added active filter; administer harmonic wave. active filter also has the function that suppresses the electrical network three-phase imbalance; the protection motor is worked under the situation of three-phase equilibrium.
The vector converter device, reactive power compensator, the course of work of active filter can be subjected to the monitoring of enterprise-level configuration monitoring system respectively by communications portion separately, co-ordination, unified control.
Vector frequency converter has been adopted in the economize on electricity of blower fan water pump equipment.As water system, if do not have water in water tower or the water pot, motor is starting automatically just, and after water was full, motor stopped, and this way of supplying water has caused the Fraquent start of motor, causes waste of electric energy.After having adopted frequency converter, adopted the mode of constant pressure water supply, motor is at low cruise, and is very little by the electric current of motor, and this compares with preceding a kind of mode, and energy-saving effect is remarkable.Fan Equipment also is that this principle of utilization and process are energy-conservation.
The integrated power-saving device has mainly been used in the economize on electricity of industry sewing machine equipment, and the electricity consumption characteristics of industrial sewing machine are frequent start and stop, and the variation of live load is bigger, if to its simple reactive power compensation, effect is bad, so used the integrated power-saving device.Battery saving arrangement can be according to the load condition and the power factor of industrial sewing machine, dynamic power and the compensating reactive power regulated makes the most economical all the time operation of industrial sewing machine. the course of work of integrated power-saving equipment, and can be by the monitoring of host computer, often consider and move, adopt the mode of wireless telecommunications.
Dynamic reactive compensation device SVC and SVG have been adopted in the economize on electricity of electric welding machine, driving.The characteristics of these power consumption equipments are that idle rate of change is bigger, and average power factor is low, also produce a certain amount of harmonic wave.Bigger for Capacity Ratio, electric pressure adopts SVC than higher power consumption equipment; Capacity is less, the employing SVG that electric pressure is lower.The electricity consumption characteristics of electric welding machine, arc furnace are that idle variation is very big, also produce a certain amount of harmonic wave, if capacity does not adopt SVG very much, can follow the tracks of compensating reactive power and filtering harmonic wave fast, reach purpose of energy saving.For driving, when hoisting heavy, very big to the impact of electrical network, power factor reduces rapidly, and this is that process lasts till when putting down weight.And when putting down weight, driving has the process of braking, in the electric energy meeting feedback grid, if do not controlled, on the one hand electrical network is impacted, owing to big electric current occurred, cause loss very big on the other hand, sharp-pointed noise often appears, utilization SVG is best scheme, can follow the tracks of compensating reactive power fast, suppresses driving impact to electrical network when hoisting heavy, electric energy is fed back in the electrical network stably, eliminate the noise of electrical network.
When if the Capacity Ratio of these equipment is big, can utilize SVC centralized compensation and smelting reason harmonic wave nearby.
SVC and SVG be energy and upper machine communication all, is subjected to the monitoring of host computer.
Arc furnace equipment, intermediate frequency furnace equipment, punching press with forged the integrated use of pressure equipment metallurgical equipment, SVC and SVG, active filter, regulator, its power saving process is as follows:
The electricity consumption characteristics of these equipment are: arc furnace, intermediate frequency furnace, punching press with forge pressure equipment and insert electrical network as non-linear and irregular load, will produce a series of harmful effects to electrical network, wherein mainly be: cause the serious three-phase imbalance of electrical network, produce negative-sequence current and produce high order harmonic component, wherein the situation that coexists as 2,4 even-order harmonics and 3,5,7 inferior odd harmonics of ubiquity, make voltage distortion more become complicated existence seriously can voltage flicker, power factor is low.
The unique method that thoroughly addresses the above problem is that the user must install the dynamic passive compensation SVG with rapid response speed.The SVG system responses is less than 5ms, can satisfy strict specification requirement fully, provide reactive current and stable bus line voltage fast, increase the output of metallurgical active power to metallurgical equipments such as arc furnace, enhance productivity, and reduce the influence of flickering to greatest extent.The phase splitting compensation function that SVG has can be eliminated the three-phase imbalance that arc furnace causes, and active filter can be eliminated harmful high order harmonic component and by providing capacitive reactive power to improve power factor to system.
Integrated power-saving device and active filter have been used in the economize on electricity of lighting apparatus and refrigeration plant.The electricity consumption characteristics of lighting apparatus and energy-saving device are that power load is not very big, and duty ratio is more steady, and the use of electricity-saving lamp produces harmonic wave again, so utilization integrated power-saving device and active filter are eliminated the influence to miscellaneous equipment.
For newly-built plant area and workshop, adopt intelligent box to become, break the pattern of centrally connected power supply, in piezoelectricity can be incorporated into from the nearest workshop of load, reduce the radius of low-voltage power supply, reduce line loss so greatly, owing to adopted the intelligent box change, eliminated the loss of conventional boxes change itself.Energy-saving effect is good.
Above-mentioned various battery saving arrangements all can be by the configuration monitoring communication of enterprise, under configuration monitoring, and unified control, co-ordination reaches the principle of energy saving of system.
Complete power saving operation process and the principle of describing a subsystem of foregoing, the energy-conservation data of each subsystem can pass on total host computer in real time, and host computer makes the most economical operation of energy conserving system with the control mode of optimum.Allow power savings controlledization on total host computer, visual, the economize on electricity of maximum dynamics.
Claims (10)
1. an integrated energy saving system of power supply and distribution system is characterized in that, it comprises ipc monitor module, communication module and at least one Executive Module; Wherein, the ipc monitor module is carried out visual and real time implementation control for adopting the configuration simulation computer of configuration emulation technology to whole system, and simultaneous computer also adopts high-capacity storage and large-scale management database;
Communication module is for adopting the server of LAMP software, and communication module also adopts the ethernet communication module respectively, fieldbus and other module communications by wireless communication apparatus and system;
Executive Module comprises at least one subsystem, and each subsystem comprises that integrated suites control battery saving arrangement, configuration monitoring device, fieldbus devices, reactive power compensator, stable-pressure device, harmonic treating apparatus, RHVC and intelligent box become at least one in the device.
2. integrated energy saving system of power supply and distribution system as claimed in claim 1 is characterized in that, described fieldbus is the CAN bus.
3. integrated energy saving system of power supply and distribution system as claimed in claim 1 is characterized in that, described reactive power compensator comprises TSC thyristor switchable capacitor device, SVC static compensation device and SVG reacance generator; Wherein, the main circuit of SVG reacance generator is from the commutation bridge circuit, it is idle that the real-time tracking compensation changes, it comprises one group of transducer, and transducer is connected with measurement mechanism, and measurement mechanism is connected with control device, control device is connected with drive circuit, drive circuit is connected with inverter by optical fiber, and inverter is connected with electrical network, and inverter also is connected with filter simultaneously; SVC static compensation device adopts TCR type SVC device, and what TSC thyristor series capacitor device adopted is thyristor series capacitor.
4. integrated energy saving system of power supply and distribution system as claimed in claim 1 is characterized in that described stable-pressure device is the VQC stable-pressure device, possesses voltage and idle unified controlled function.
5. integrated energy saving system of power supply and distribution system as claimed in claim 1, it is characterized in that, described harmonic treating apparatus is an active filter, it comprises the harmonic measure circuit, this harmonic measure circuit is by the harmonic content of PT or CT measuring system, after carrying out Fourier analysis, data are sent into control circuit; Control circuit then is connected with inverter; Equal and opposite in direction in inverter generation and the system, the harmonic wave that direction is opposite is injected in the system; Inverter also is connected with high pass filter with inrush current prevention resistance simultaneously; inrush current prevention resistance is the dc capacitor charging earlier before device starts; protection voltage is to the impact of dc capacitor, and high pass filter is used for the high order harmonic component in the absorption system, and protection system voltage is to the impact of inverter.
6. integrated energy saving system of power supply and distribution system as claimed in claim 1, it is characterized in that, described harmonic treating apparatus is for mixing the parallel connection type active filter, adopted active filter I and passive filter I parallel connection to be linked in the electrical network, both unified controls, utilize the fixing low-order harmonic of passive filter I filtering amplitude, the high order harmonic component of utilizing active filter I filtering amplitude to change; Wherein active filter I main circuit is an inverter, the direct voltage at inverter inversion direct current electric capacity two ends, and the equal and opposite in direction in generation and the electrical network, the harmonic wave that direction is opposite, inverter is parallel on the electrical network by reactor.
7. integrated energy saving system of power supply and distribution system as claimed in claim 1, it is characterized in that, described harmonic treating apparatus is for mixing the series connection type active filter, it comprises the passive filtering II and the active filter II of mutual series connection, passive filter II is connected with expander, measuring circuit is connected with electrical network, detection signal is sent into controller, the controller control Driver Circuit, drive circuit then drives active filter II, active filter II also is connected with expander simultaneously, and wherein active filter II is the inverter of SVG reacance generator.
8. integrated energy saving system of power supply and distribution system as claimed in claim 1 is characterized in that, described harmonic treating apparatus is a passive filtration unit; Described RHVC is a current phasor type frequency converter.
9. integrated energy saving system of power supply and distribution system as claimed in claim 1, it is characterized in that, described intelligent box becomes device and comprises casing, in casing, be provided with intelligent switch, the input power supply at first inserts intelligent switch, intelligent switch is connected with transformer, and transformer is connected with active filter I with, reactive power compensator, regulator respectively, and voltage-regulating system is connected with load; In casing, also be provided with controller, microcomputer protecting device, communicator.Microcomputer protecting device, communicator all are connected with controller.
10. as claim 3 or 5 or 6 or 7 described integrated energy saving system of power supply and distribution system, it is characterized in that, described inverter is for to comprise an inverter of being made up of the IGBT module of one group of parallel connection from the commutation bridge circuit, this inverter is in parallel with dc capacitor, and dc capacitor supports voltage for inverter provides a direct current; The direct voltage at inverter inversion direct current electric capacity two ends produces capacitive and perceptual compensating reactive power electric current, and each IGBT module is connected with a corresponding reactor respectively in the inverter.
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Address after: 250101, No. 116, No. 1, Hong Kong Road, Ji'nan hi tech Zone, Shandong Patentee after: Lu, Shandong Electric Power Group Co., Ltd. Address before: 250101 E, North Zone, University Science Park, Ji'nan hi tech Zone, Shandong Patentee before: Shandong Leader Group Co., Ltd. |