CN203554070U - Electrical power quality optimization system - Google Patents
Electrical power quality optimization system Download PDFInfo
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- CN203554070U CN203554070U CN201320669580.4U CN201320669580U CN203554070U CN 203554070 U CN203554070 U CN 203554070U CN 201320669580 U CN201320669580 U CN 201320669580U CN 203554070 U CN203554070 U CN 203554070U
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- 238000000034 method Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 4
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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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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Abstract
The utility model discloses an electrical power quality optimization system. The electrical power quality optimization system is characterized by comprising an electrical power quality optimization controller, an electricity detection device, an electricity consumption controller and a harmonic treatment system; the electricity detection device and the electricity consumption controller are respectively connected with an electricity consumption system; the electricity detection device and the electricity consumption controller are communicated with the electrical power quality optimization controller via the industrial local area network; and the electrical power quality optimization controller is also communicated with the reactive harmonic treatment system via the industrial local area network. Compared with the prior art, the electrical power quality optimization system has the beneficial effects that the state of the electricity consumption network can be monitored in real time by the method, the purpose of reasonable electricity consumption is achieved, harmonic can be suppressed, and the grid quality can be optimized.
Description
Technical field
The utility model relates to a kind of electric energy optimizing system.
Background technology
Along with power electronic equipment increasingly extensive apply, electrical network load is also increasingly sophisticated.Non-linear, the impact of electrical network load and unbalancedly by electrical characteristics, the harmonic pollution in electrical network is on the rise, meanwhile, has also brought extra idle burden, power factor degradation to electrical network.Thereby, power consumption equipment and line loss are increased, voltage produces big ups and downs, and power supply quality seriously reduces, and harmonic loss also likely affects equipment normally works, and causes vibration, heat, noise, and automatics misoperation produces interference etc. to communication system.
Existence at present much improves the method for the quality of power supply, for example, fixed capacitor group, automatic power factor controller etc., but these schemes are functional for fixing load compensation, but poor for dynamic load compensation performance, but its control device is as slower in the response speed of FC, APFC.For solving the slow problem of response speed, use the static var compensator based on thyristor.But the capacitor in TSC/TCR and the capacity of Reactor banks are predefined, may produce undercompensation or the overcompensation of reactive power compensation, harmonic wave effect is not fine.In addition, due to the capacitor group in equipment and the frequent break-make of switchgear, compensation characteristic is stairstepping, and produces harmonic wave in compensation process, and compensation characteristic is relevant with load simultaneously, also may break down and reduce useful life.
The voltage harmonic of electric power system is present in the electric power system of each electric pressure, and harmonic wave can cause that supply line's loss increases, and damages electric equipment, reduces the reliability of powering.For the harmonic wave that suppresses electrical network, there are two kinds of solutions at present: make load not produce harmonic wave, or compensate by appropriate device.
1) essence that makes load not produce the method for harmonic wave is by transformation load, make it not to electric power system harmonic, or the harmonic content of injecting is very little, thereby can not make voltage harmonic content in associated bus be no more than the requirement of standard GB/T/T14549-93 < < quality of power supply public electric wire net harmonic wave > >.This method is one solution the most intuitively, but transform load and be not suitable for all loads, and some load cannot produce by transforming harmonic wave at all less, is not therefore general especially.
2) by appropriate device, compensating is a kind of solution that has development prospect.
The effect of the removing voltage harmonic of the removing power system voltage harmonic device of above two kinds of methods is not also fine, and the response time needs to improve.
Utility model content
The purpose of this utility model provides a kind of electric energy quality optimizing system, and this system can be carried out Real-Time Monitoring to the state of power utilization network, reaches the object of rational utilization of electricity, and can suppress harmonic wave, reaches the optimization function to power grid quality.
For achieving the above object, the utility model is achieved through the following technical solutions:
A kind of electric energy quality optimizing system, comprise electric energy quality optimizing controller, electric quantity detection apparatus, dsm controller, harmonic wave control system, electric quantity detection apparatus is connected with using electricity system respectively with dsm controller, and electric quantity detection apparatus and dsm controller communicate by industrial local network and electric energy quality optimizing controller; Electric energy quality optimizing controller also communicates by industrial local network and idle harmonic wave control system; First-harmonic filter, high frequency transformer, AC power, power cell, rectification unit, filter unit, controller that described harmonic wave control system comprises harmonic voltage source checkout gear, reactor one, reactor two, capacitor's series, consists of, harmonic voltage source checkout gear has two, one is arranged on the input of this device, be used for detecting the voltage source containing harmonic wave, the output that another is arranged on this device, is used for detecting the voltage source of removing after harmonic wave; Two harmonic voltage source checkout gears are all by the voltage source signal input control device detecting; Controller is connected with AC power, rectification unit, power cell respectively.
Compared with prior art, the beneficial effects of the utility model are: this system can be carried out Real-Time Monitoring to the state of power utilization network, reaches the object of rational utilization of electricity, and can be to the idle real-Time Compensation of carrying out of electrical network, and can suppress harmonic wave, reach the optimization function to power grid quality.
Accompanying drawing explanation
Fig. 1 is the overall structure figure of electric energy quality optimizing system.
Fig. 2 is the structured flowchart of electric quantity detection apparatus.
Fig. 3 is the structured flowchart of dsm controller.
Fig. 4 is the structured flowchart of harmonic wave control system.
Fig. 5 is that current transformer is the circuit diagram of non-four-quadrant two level structures;
Fig. 6 is that current transformer is the circuit diagram of four-quadrant two level structures.
Embodiment
See Fig. 1, a kind of electric energy quality optimizing system, this system detects the electric weight of using electricity system in real time by electric quantity detection apparatus, by industrial local network, electrical parameter is transferred to electric energy quality optimizing controller, by electric energy quality optimizing controller, make control decision, by industrial local network, realize electric energy quality optimizing controller again dsm controller is controlled, dsm controller carries out electricity consumption optimal control to corresponding using electricity system.Electric quantity detection apparatus, electric energy quality optimizing controller, dsm controller all have Profibus-DP and Modbus fieldbus function, by the mutual communication of industrial local network.Using electricity system is several, can be power consumption equipment, as motor, electric furnace, heater; Also can be with motor group, electricity consumption workshop; Or electricity consumption department, one use electric unit.The hardware system, electric energy quality optimizing software and the configuration software that in electric energy quality optimizing controller, are provided with DSP composition, have electric energy quality optimizing decision making function and driving display function, the information such as display show state picture, electrical energy parameter and accident alarming.Electric quantity detection apparatus can detect the electrical parameter of using electricity system in real time, for electric energy quality controller provides foundation; Multiple using electricity systems, under the control of electric energy quality controller, carry out rational utilization of electricity.Electric energy quality optimizing controller is also connected to GPRS wireless telecommunication system, the information of electric energy quality optimizing controller can be sent to remote monitoring system with wireless mode; Electric energy quality optimizing controller is also connected with harmonic wave control system by industrial local network.
See Fig. 2, electric quantity detection apparatus comprises control unit, measurement chip, watchdog circuit, clock circuit, temperature element, LCD screen, and control unit is connected with measurement chip, watchdog circuit, clock circuit, temperature element, LCD screen respectively.Control unit is also connected with button and buzzer, and button has input function; Buzzer has warning function.
See Fig. 3, dsm controller comprises microprocessor CPU 1, microprocessor CPU 2, reset circuit, crystal oscillating circuit, relay, SPC3 chip, power module, microprocessor CPU 1 is connected with reset circuit, contactless relay output respectively, and microprocessor CPU 1 also connects 20MHz crystal oscillating circuit; Microprocessor CPU 2 is connected with 20MHz crystal oscillating circuit, SPC3 chip, high speed photo coupling respectively; Microprocessor CPU 1 is all connected with bus driver module with microprocessor CPU 2.
See Fig. 4, harmonic wave control system comprises harmonic voltage source checkout gear 1, harmonic voltage source checkout gear 2, the first-harmonic filter, high frequency transformer 6, AC power 7, power cell 8, rectification unit 9, the controller 10 that by reactor 3, reactor 4, capacitor 5, are composed in series successively, harmonic voltage source checkout gear 1 is arranged on input, be used for detecting the voltage source containing harmonic wave, harmonic voltage source checkout gear 2 is arranged on output, be used for detecting the voltage source of removing after harmonic wave, two harmonic voltage source checkout gears are all by the voltage source signal input control device 10 detecting; Controller 10 is also connected with AC power 7, rectification unit 9, power cell 8 respectively.
Harmonic voltage source checkout gear 1 collects the real-time harmonic voltage of system, by harmonic voltage signal input controller 10, by controller 10 calculate one with the voltage of harmonic voltage equal and opposite in direction, opposite direction, by power cell 8, through high frequency transformer 6, inputted by reactor 4, capacitor 5 LC branch road in series, this voltage and harmonic voltage are superimposed, making harmonic wave voltage is zero, reaches the effect of filtering mains by harmonics voltage.AC power 7 provides power supply for control unit 10, rectification unit, power cell 8.Controller 10 gathers the parameter of rectification unit 9, controls the output direct current of rectification unit 9, with the Output rusults of guaranteed output unit 8.
This device has protection and bypass functionality, is parallel with by-pass switch 11, and is provided with equipment investment run switch 13 between the input of the first-harmonic filter being composed in series by reactor 3, reactor 4, capacitor 5 and output between capacitor 5 and output.By controlling by-pass switch 11, equipment investment run switch 13, equipment is out of service when device has fault, equipment is had to protective effect.Power cell 8 is the current transformer of full-control type or half control type switching device composition, is non-four-quadrant two level structures or four-quadrant two level structure structures.
See Fig. 5, current transformer is non-four-quadrant two level structures, rectification side is the non-four-quadrant construction of diode D1-1, D2-1, D3-1, D4-1, D5-1, D6-1 composition, capacitor C 1-1 composition DC filtering circuit, inversion side is two level export structures of full-control type power semiconductor switch V1-1, V2-1, V3-1, V4-1, V5-1, V6-1 composition.
See Fig. 6, current transformer is four-quadrant two level structures, rectification side is the four-quadrant construction of full-control type power semiconductor switch V1-2, V2-2, V3-2, V4-2, V5-2, V6-2 composition, and capacitor C 1-2 composition DC filtering circuit, inversion side are two level export structures of full-control type power semiconductor switch V7-2, V8-2, V9-2, V10-2, V11-2, V12-2 composition.
The method can be carried out Real-Time Monitoring to the state of power utilization network, reaches the object of rational utilization of electricity, and can effectively suppress harmonic wave by harmonic treating apparatus, reaches the optimization function to power grid quality.
Claims (1)
1. an electric energy quality optimizing system, it is characterized in that, comprise electric energy quality optimizing controller, electric quantity detection apparatus, dsm controller, harmonic wave control system, electric quantity detection apparatus is connected with using electricity system respectively with dsm controller, and electric quantity detection apparatus and dsm controller communicate by industrial local network and electric energy quality optimizing controller; Electric energy quality optimizing controller also communicates by industrial local network and idle harmonic wave control system; First-harmonic filter, high frequency transformer, AC power, power cell, rectification unit, filter unit, controller that described harmonic wave control system comprises harmonic voltage source checkout gear, reactor one, reactor two, capacitor's series, consists of, harmonic voltage source checkout gear has two, one is arranged on the input of this device, be used for detecting the voltage source containing harmonic wave, the output that another is arranged on this device, is used for detecting the voltage source of removing after harmonic wave; Two harmonic voltage source checkout gears are all by the voltage source signal input control device detecting; Controller is connected with AC power, rectification unit, power cell respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320669580.4U CN203554070U (en) | 2013-10-28 | 2013-10-28 | Electrical power quality optimization system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320669580.4U CN203554070U (en) | 2013-10-28 | 2013-10-28 | Electrical power quality optimization system |
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| CN203554070U true CN203554070U (en) | 2014-04-16 |
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| CN201320669580.4U Expired - Lifetime CN203554070U (en) | 2013-10-28 | 2013-10-28 | Electrical power quality optimization system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112117764A (en) * | 2019-06-21 | 2020-12-22 | 国网江苏省电力有限公司常州供电分公司 | Distribution network comprehensive electric energy quality control terminal |
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2013
- 2013-10-28 CN CN201320669580.4U patent/CN203554070U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112117764A (en) * | 2019-06-21 | 2020-12-22 | 国网江苏省电力有限公司常州供电分公司 | Distribution network comprehensive electric energy quality control terminal |
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Granted publication date: 20140416 |