CN107069765A - A kind of low pressure mixed type reactive-load compensation complete equipment and application method - Google Patents
A kind of low pressure mixed type reactive-load compensation complete equipment and application method Download PDFInfo
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- CN107069765A CN107069765A CN201710284949.2A CN201710284949A CN107069765A CN 107069765 A CN107069765 A CN 107069765A CN 201710284949 A CN201710284949 A CN 201710284949A CN 107069765 A CN107069765 A CN 107069765A
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- low pressure
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- apf
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
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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
- Y02E40/20—Active power filtering [APF]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention relates to a kind of low pressure mixed type reactive-load compensation complete equipment and application method, belong to reactive-load compensation equipment technical field.Technical scheme is：Include Power Quality Detection table（3）, intelligent low-pressure oil-filled capacitor（4）, controller（5）With low pressure APF（6）, the Power Quality Detection table（3）With intelligent low-pressure oil-filled capacitor（4）Interconnect, controller（5）Respectively with intelligent low-pressure oil-filled capacitor（4）, low pressure APF（6）Interconnect, controller（5）, low pressure APF（6）On be designed with electric energy detection unit, controller（5）It is provided with automatic mode structure（51）And Manual mode structure（52）.The beneficial effects of the invention are as follows：Controller being capable of centralized Control intelligent low-pressure oil-filled capacitor and low pressure APF（Active Power Filter-APF）, optimum organization intelligent low-pressure oil-filled capacitor and low pressure APF performance characteristics reach the result of intelligent powerless compensation.
Description
Technical field
The present invention relates to a kind of low pressure mixed type reactive-load compensation complete equipment and application method, belong to reactive-load compensation equipment skill
Art field.
Background technology
For the requirement of the reactive-load compensation of distribute-electricity transformer district, former National Electricity Co. exists《Building and upgrading of rural power grids engineering philosophy》
Middle regulation：The reactive-load compensation of distribution transforming, can be configured by the 10-15% of capacity of distribution transform, but position and compensation that it is installed is not known
Scope.《Rural area low-voltage power technical regulation》In also simply list electricity for needed for obtaining needed for every kilowatt of load of power factor
Container kilovar number, does not also make clear and definite regulation to the reactive compensation capacity of distribution transforming, low-voltage circuit and user's motor.
But do not implemented completely in fact, being distinguished with Rural Low-Voltage Power Network platform and dissipating local compensation, meanwhile, in practical application,
Capacitor such as is configured by the 10-15% of its capacity in distribution low-voltage side, overcompensation is likely to result in, has both influenceed distribute-electricity transformer district line loss
Statistical accuracy, also makes low-voltage circuit cannot get effective reactive-load compensation, so as to reduce the warp of whole distribute-electricity transformer district operation
Ji property.
Moreover, install the platform area of low-pressure reactive compensation equipment, mainly without reactance, directly using contactor switching oneself
More formula capacitor, the characteristics of being limited to self healing capacitor itself and operational reliability be not good, and reactive power support ability is weaker.Low pressure
Common overvoltage, inrush phenomenon in platform area, the factor such as harmonic wave and environment temperature, the influence to self healing capacitor is even more special
Greatly.Especially when self-healing fails, the dielectric level of component can be caused to decline, or even short circuit, produce bulge, explosion etc. indivedual
Phenomenon.
The platform area of low-pressure reactive compensation equipment is not installed, its reactive compensation capacity mainly by higher level's power station it is idle it is lower fill,
The spread of voltage of power network occurs, terminal voltage declines, and can more cause line loss big, the quality of power supply is reduced, to the performance of enterprises
Influence is very big.
The protection of current low-pressure reactive compensation equipment is controlled there is also some problems, and idle compensating control typically has electricity
Time control, three kinds of modes of power factor controlling and voltage ＆ var control are pressed, the need of various load characters can not be adapted to completely
Will, substantially assume what load side property was linear condition to design.Meanwhile, voltage, nothing after capacitor switching are lacked mostly
The dynamic budget of work(change, and avoid producing the technology of closed loop measure for throwing, cutting vibration.The general all line taking voltage of sampled signal and
Phase difference between phase current, this mode is when current signal is smaller, and power factor value usually malfunctions.
The content of the invention
It is an object of the present invention to provide a kind of low pressure mixed type reactive-load compensation complete equipment and application method, by using control
Device centralized Control intelligent low-pressure oil-filled capacitor and low pressure APF（Active Power Filter-APF）, optimum organization intelligent low-pressure oil-filled capacitor
With low pressure APF performance characteristics, the result of intelligent powerless compensation is reached, above-mentioned present in background technology ask is efficiently solved
Topic.
The technical scheme is that：A kind of low pressure mixed type reactive-load compensation complete equipment, includes AC transformer, non-thread
Property load, Power Quality Detection table, intelligent low-pressure oil-filled capacitor, controller and low pressure APF, the Power Quality Detection table, intelligence
Energy low pressure oil-filled capacitor, controller, low pressure APF are connected to the power network line between AC transformer and nonlinear load, electricity
Energy quality testing table is interconnected with intelligent low-pressure oil-filled capacitor, and controller is mutual with intelligent low-pressure oil-filled capacitor, low pressure APF respectively
It is connected, electric energy detection unit is designed with controller, low pressure APF, controller is provided with automatic mode structure and manual mode
Structure.
The intelligent low-pressure oil-filled capacitor has two groups, and capacitance group and point benefit capacitance group are respectively mended altogether.
The intelligent low-pressure oil-filled capacitor is the oily formula electric capacity of the non-self-healing of intelligent low-pressure.
Man-machine interface is also included, is interconnected with controller.
The Power Quality Detection table, intelligent low-pressure oil-filled capacitor, controller, low pressure APF are connected to same CAN（Control
Device LAN）Bus.
The low pressure APF includes harmonic detecting unit, main controller, instruction electric wave unit, control circuit unit, drive circuit
And main circuit, six are sequentially connected.
Low pressure APF is commercially available prod, be it is a kind of be used for dynamic harmonic wave, the power electronic equipment of compensating reactive power, its energy
The enough harmonic wave all changed to size and frequency and the idle of change are compensated, why referred to as active, as the term suggests the dress
Putting needs to provide power supply, and its application can overcome the shortcoming of traditional harmonics restraint such as LC wave filters and reactive-load compensation method（Tradition
Can only fixed compensation）, dynamic tracing compensation is realized, and can not only mend harmonic wave but also mend idle.
A kind of application method of low pressure mixed type reactive-load compensation complete equipment, in the distribution low-voltage side with Rural Low-Voltage Power Network platform area
Compensate, comprise the following steps：
Power Quality Detection table, intelligent low-pressure oil-filled capacitor, controller, low pressure APF are connected to nonlinear load with exchanging change
Power network line between depressor；The detection power network quality of power supply is simultaneously compensated to power network electric energy；
Power Quality Detection table is used to detect circuit electric energy, and testing result is delivered into intelligent low-pressure oil-filled capacitor；
Testing result is also delivered to controller and low pressure APF by Power Quality Detection table；Controller and low pressure APF carry electric energy respectively
Quality testing unit；Exist concurrently with Power Quality Detection table and controller and low pressure APF carries Power Quality Detection list
In the case of member, select one and be operated, or work simultaneously；
The controller switches between two patterns of automatic mode and manual mode, under the automatic mode, controller base
In the quality of power supply situation that it carries Power Quality Detection unit and/or Power Quality Detection table detection, idle benefit is determined
Repay harmonic resolution, and control the intelligent low-pressure oil-filled capacitor and/or the low pressure APF carry out reactive-load compensation and/or
Harmonic wave control；Under the manual mode, the Power Quality Detection unit that carries of controller is no longer detected to circuit electric energy,
Controller is communicated with intelligent low-pressure oil-filled capacitor and low pressure APF, and the intelligent low-pressure oil-filled capacitor is examined based on the quality of power supply
Survey the quality of power supply situation of table detection, it is determined that and perform Scheme of Reactive Power Compensation, after intelligent low-pressure oil-filled capacitor compensation, institute
State low pressure APF6 and Power Quality Detection unit and/or the harmonic wave and idle feelings of Power Quality Detection table detection are carried based on it
Condition, is voluntarily determined with performing the idle harmonic controlling input for needing to compensate.
Under the automatic mode, when carrying out reactive-load compensation, the controller preferentially uses intelligent low-pressure oil-filled capacitor
Carry out reactive-load compensation.That is, after reactive-load compensation is carried out using intelligent low-pressure oil-filled capacitor, whether considering further that using low
APF is pressed to carry out reactive-load compensation and harmonic wave control.
The beneficial effects of the invention are as follows：Controller being capable of centralized Control intelligent low-pressure oil-filled capacitor and low pressure APF（Active electrical
Force filter）, optimum organization intelligent low-pressure oil-filled capacitor and low pressure APF performance characteristics reach the result of intelligent powerless compensation.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
In figure：It is AC transformer 1, nonlinear load 2, Power Quality Detection table 3, intelligent low-pressure oil-filled capacitor 4, controller 5, low
Press APF6, power network line 7, control panel 41, automatic mode structure 51, Manual mode structure 52, harmonic detecting unit 61, main controller
62nd, instruction electric wave unit 63, control circuit unit 64, drive circuit 65, main circuit 66.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the invention will be further described.
A kind of low pressure mixed type reactive-load compensation complete equipment, includes AC transformer 1, nonlinear load 2, quality of power supply inspection
Survey table 3, intelligent low-pressure oil-filled capacitor 4, controller 5 and low pressure APF6, the Power Quality Detection table 3, intelligent low-pressure oil immersion electricity
Hold the power network line 7 that 4, controller 5, low pressure APF6 are connected between AC transformer 1 and nonlinear load 2, the quality of power supply
Detection table 3 is interconnected with intelligent low-pressure oil-filled capacitor 4, and controller 5 is mutual with intelligent low-pressure oil-filled capacitor 4, low pressure APF6 respectively
It is connected, electric energy detection unit is designed with controller 5, low pressure APF6, controller 5 is provided with automatic mode structure 51 and manually
Mode configuration 52.
The intelligent low-pressure oil-filled capacitor 4 has two groups, and capacitance group and point benefit capacitance group are respectively mended altogether.
The intelligent low-pressure oil-filled capacitor 4 is the oily formula electric capacity of the non-self-healing of intelligent low-pressure.
Man-machine interface is also included, is interconnected with controller 5.
The Power Quality Detection table 3, intelligent low-pressure oil-filled capacitor 4, controller 5, low pressure APF6 are connected to same CAN
（Controller local area network）Bus.
The low pressure APF6 includes harmonic detecting unit 61, main controller 62, instruction electric wave unit 63, control circuit unit
64th, drive circuit 65 and main circuit 66, six are sequentially connected.
Low pressure APF is commercially available prod, be it is a kind of be used for dynamic harmonic wave, the power electronic equipment of compensating reactive power, its energy
The enough harmonic wave all changed to size and frequency and the idle of change are compensated, why referred to as active, as the term suggests the dress
Putting needs to provide power supply, and its application can overcome the shortcoming of traditional harmonics restraint such as LC wave filters and reactive-load compensation method（Tradition
Can only fixed compensation）, dynamic tracing compensation is realized, and can not only mend harmonic wave but also mend idle.
A kind of application method of low pressure mixed type reactive-load compensation complete equipment, in the distribution low-voltage side with Rural Low-Voltage Power Network platform area
Compensate, comprise the following steps：
Power Quality Detection table 3, intelligent low-pressure oil-filled capacitor 4, controller 5, low pressure APF 6 be connected to nonlinear load 2 with
Power network line between AC transformer 1；The detection power network quality of power supply is simultaneously compensated to power network electric energy；
Power Quality Detection table 3 is used to detect circuit electric energy, and testing result is delivered into intelligent low-pressure oil-filled capacitor
4；Testing result is also delivered to controller 5 and low pressure APF 6 by Power Quality Detection table 3；Controller 5 and low pressure APF 6 distinguish
Carry Power Quality Detection unit；Exist concurrently with Power Quality Detection table 3 and controller and low pressure APF 6 carries electric energy
In the case of quality testing unit, select one and be operated, or work simultaneously；
The controller 5 switches between two patterns of automatic mode and manual mode, under the automatic mode, controller 5
The quality of power supply situation of Power Quality Detection unit and/or the Power Quality Detection table 3 detection is carried based on it, is determined idle
Harmonic resolution is compensated, and controls the intelligent low-pressure oil-filled capacitor 4 and/or the low pressure APF 6 to carry out reactive-load compensation
And/or harmonic wave control；Under the manual mode, the Power Quality Detection unit that carries of controller 5 no longer enters to circuit electric energy
Row detection, controller 5 is communicated with intelligent low-pressure oil-filled capacitor 4 and low pressure APF 6, the base of intelligent low-pressure oil-filled capacitor 4
In Power Quality Detection table 3 detect quality of power supply situation, it is determined that and perform Scheme of Reactive Power Compensation, in the intelligent low-pressure oil immersion
After electric capacity 4 is compensated, the low pressure APF6 carries Power Quality Detection unit based on it and/or the Power Quality Detection table 3 is examined
The harmonic wave of survey and idle situation, are voluntarily determined with performing the idle harmonic controlling input for needing to compensate.
Under the automatic mode, when carrying out reactive-load compensation, the controller 5 preferentially uses intelligent low-pressure oil-filled capacitor
4 carry out reactive-load compensation.That is, after reactive-load compensation is carried out using intelligent low-pressure oil-filled capacitor 4, considering further that whether use
Low pressure APF 6 carries out reactive-load compensation and harmonic wave control.
In embodiment one, the intelligent low-pressure oil-filled capacitor 4 has two groups, and capacitance group and point benefit electric capacity are respectively mended altogether
Group, to come into operation as needed.Capacitance group is mended altogether simultaneously to compensate three-phase；Divide benefit capacitance group can be alone including three
Ground is to the electric capacity that accordingly mutually compensates.
Controller 5 determines input intelligent low-pressure oil immersion in an optimized fashion according to the quality of power supply and capacitors available situation
The group number of electric capacity 4.If input intelligent low-pressure oil-filled capacitor 4 can not meet reactive compensation requirements, input low pressure APF6 is carried out
Low capacity is adjusted --- more precisely compensates for.If putting into intelligent low-pressure oil-filled capacitor 4, reactive-load compensation can be carried out well,
Then without being adjusted in input low pressure APF6.
In embodiment one, in the case where controller 5 breaks down, the controller plc 5 is transferred to manually automatically
Pattern, in a manual mode, the controller 5 only serve communication connection function.That is, in a manual mode, the control
Device 5 processed no longer determines reactive-load compensation harmonic resolution, no longer controls the intelligent low-pressure oil-filled capacitor 4 and/or described low
APF 6 is pressed to carry out reactive-load compensation and/or harmonic wave control；Moreover, under the manual mode, the quality of power supply of the controller 5
Detection unit is no longer detected to circuit electric energy.
In embodiment two（Another embodiment）In, the low pressure mixed type reactive-load compensation complete equipment further comprises people
Machine interface, the man-machine interface is connected with the controller, the running status of the low pressure mixed type reactive-load compensation complete equipment,
The information such as failure are concentrated and are input to the controller, and can be shown in the man-machine interface, wherein, the man-machine interface is
Touch screen, by the man-machine interface can consult the intelligent low-pressure oil-filled capacitor 4 and low pressure APF6 data history curve,
Fault history, the man-machine interface has eye-catching police instruction, and fault type divides light fault, weight failure, and light fault is to set
Standby to continue to run with, it is necessary to safeguard, weight failure is that equipment must be at once out of service, is overhauled.
It is understood that in a manual mode, the controller still with the intelligent low-pressure oil-filled capacitor 4 and/or
The low pressure APF 6 is communicated, and obtains its working condition or compensation relevant information.
In embodiment three（3rd embodiment）In, the Power Quality Detection table, intelligent low-pressure oil-filled capacitor, controller and
Low pressure APF is connected to same CAN, and is communicated by the CAN, wherein, in automatic mode, the control
Device processed is as main equipment, and the Power Quality Detection table, intelligent low-pressure oil-filled capacitor and low pressure APF are as slave unit, manual
Under pattern, the controller, Power Quality Detection table, intelligent low-pressure oil-filled capacitor and low pressure APF are as slave unit.
The testing result of the Power Quality Detection table is delivered to the controller, the intelligence by the CAN
Low pressure oil-filled capacitor and the low pressure APF.So as to which data transfer more facilitates, and structure is simpler.And control can be saved
The Power Quality Detection unit that device processed and low pressure APF are carried.
The intelligent low-pressure oil-filled capacitor 4 is the oily formula electric capacity of the non-self-healing of intelligent low-pressure.
The present invention low pressure mixed type reactive-load compensation complete equipment in, controller can centralized Control intelligent low-pressure it is non-from
More oily formula electric capacity and APF, the oily formula electric capacity of the non-self-healing of optimum organization intelligent low-pressure and APF performance characteristics, reach that Intelligence Reactive Power is mended
The result repaid.
The low pressure mixed type reactive-load compensation complete equipment of the present invention is particularly suitable for use in the various of Rural Low-Voltage Power Network platform area application
Reactive power compensation technology.The present invention can effectively combine low-voltage active filter apparatus（Low pressure APF）With it is Passively compensated（Intelligent low-pressure oil
Soak electric capacity）The characteristics of, research possesses intellectual analysis control, protection and the novel low-voltage intelligent reactive-load compensation of higher operational reliability
Technology.So as to which low pressure mixed type reactive-load compensation complete equipment of the invention can change current intrinsic equipment replacement mode, carry
High equipment control, protection, reliability of operation.Increase the benefit, reduce line loss, booster tension quality reduces high voltage and low electricity
Pressure problem.The present invention in distribute-electricity transformer district by using new intelligent powerless compensation technology so that low-voltage circuit is obtained effectively
Reactive-load compensation, improves the economy of whole distribute-electricity transformer district operation.In addition, the present invention can be effectively reduced supply transformer and defeated
The loss on line sending road, improves power supplying efficiency, improves power supply environment, improves the quality of power supply, it is ensured that the performance of enterprises.
Claims (6)
1. a kind of low pressure mixed type reactive-load compensation complete equipment, it is characterised in that：Include AC transformer（1）, nonlinear load
（2）, Power Quality Detection table（3）, intelligent low-pressure oil-filled capacitor（4）, controller（5）With low pressure APF（6）, the quality of power supply
Detect table（3）, intelligent low-pressure oil-filled capacitor（4）, controller（5）, low pressure APF（6）It is connected to AC transformer（1）With non-thread
Property load（2）Between power network line, Power Quality Detection table（3）With intelligent low-pressure oil-filled capacitor（4）Interconnect, controller
（5）Respectively with intelligent low-pressure oil-filled capacitor（4）, low pressure APF（6）Interconnect, controller（5）, low pressure APF（6）On be designed with
Electric energy detection unit, controller（5）It is provided with automatic mode structure（51）And Manual mode structure（52）.
2. a kind of low pressure mixed type reactive-load compensation complete equipment according to claim 1, it is characterised in that：The intelligence is low
Press oil-filled capacitor（4）Two groups are had, capacitance group and point benefit capacitance group are respectively mended altogether.
3. a kind of low pressure mixed type reactive-load compensation complete equipment according to claim 1, it is characterised in that：The intelligence is low
Press oil-filled capacitor（4）For the oily formula electric capacity of the non-self-healing of intelligent low-pressure.
4. a kind of low pressure mixed type reactive-load compensation complete equipment according to claim 1, it is characterised in that：Also comprising man-machine
Interface, with controller（5）Interconnect.
5. a kind of low pressure mixed type reactive-load compensation complete equipment according to claim 1, it is characterised in that：The electric energy matter
Amount detection table（3）, intelligent low-pressure oil-filled capacitor（4）, controller（5）, low pressure APF（6）It is connected to same CAN.
6. a kind of low pressure mixed type reactive-load compensation complete equipment according to claim 1, it is characterised in that：The low pressure
APF（6）Include harmonic detecting unit（61）, main controller（62）, instruction electric wave unit（63）, control circuit unit（64）, driving
Circuit（65）And main circuit（66）, six are sequentially connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710284949.2A CN107069765B (en) | 2017-04-27 | 2017-04-27 | Low-voltage hybrid reactive compensation complete equipment and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710284949.2A CN107069765B (en) | 2017-04-27 | 2017-04-27 | Low-voltage hybrid reactive compensation complete equipment and use method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN107069765A true CN107069765A (en) | 2017-08-18 |
| CN107069765B CN107069765B (en) | 2023-07-21 |
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| CN201710284949.2A Active CN107069765B (en) | 2017-04-27 | 2017-04-27 | Low-voltage hybrid reactive compensation complete equipment and use method thereof |
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| CN103760888A (en) * | 2014-01-02 | 2014-04-30 | 国家电网公司 | Closed loop simulation testing method of low-voltage active filter controller based on RTDS |
| CN204706889U (en) * | 2015-04-29 | 2015-10-14 | 北京华电嘉实电力设备有限公司 | Low-voltage dynamic filtering bucking-out system |
| CN206658051U (en) * | 2017-04-27 | 2017-11-21 | 国网冀北电力有限公司唐山供电公司 | A kind of low pressure mixed type reactive-load compensation complete equipment |
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2017
- 2017-04-27 CN CN201710284949.2A patent/CN107069765B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070014132A1 (en) * | 2005-07-18 | 2007-01-18 | Zhaoan Wang | Comprehensive power quality controller for substation in power system |
| FR2951774A1 (en) * | 2009-10-27 | 2011-04-29 | Peugeot Citroen Automobiles Sa | Pneumatic control device for internal combustion engine, has conduit connecting electro valve to pneumatic actuator, pneumatic control branch connected to vacuum circuit by electro valve, and pressure sensor arranged on branch |
| CN103441511A (en) * | 2013-08-14 | 2013-12-11 | 毛振刚 | Intelligent low-voltage dynamic-compensation energy-saving filtering device |
| CN103760888A (en) * | 2014-01-02 | 2014-04-30 | 国家电网公司 | Closed loop simulation testing method of low-voltage active filter controller based on RTDS |
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| CN107069765B (en) | 2023-07-21 |
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