CN110289617A - A kind of building harmonic compensation method, terminal device and storage medium - Google Patents
A kind of building harmonic compensation method, terminal device and storage medium Download PDFInfo
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- CN110289617A CN110289617A CN201910594412.5A CN201910594412A CN110289617A CN 110289617 A CN110289617 A CN 110289617A CN 201910594412 A CN201910594412 A CN 201910594412A CN 110289617 A CN110289617 A CN 110289617A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
- G06F30/398—Design verification or optimisation, e.g. using design rule check [DRC], layout versus schematics [LVS] or finite element methods [FEM]
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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
- H02J3/01—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
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The present invention relates to a kind of building harmonic compensation method, terminal device and storage mediums, it include: the setting centralized compensation module on the centrally connected power supply end line of building in this method, local compensation module is set on the route in each room, on centrally connected power supply end line and is respectively arranged to control the compensating controller whether corresponding compensating module compensates on the route in each room；Pass through the harmonic content of compensating controller gathering line road, when the harmonic content on centrally connected power supply end line is less than the harmonic data thresholds of setting, compensating module stops carrying out harmonic compensation in compensating controller domination set, and otherwise, compensating module carries out harmonic compensation in compensating controller domination set；Compensating controller on the route in each room according to its harmonic content control local compensation module on the line whether carry out harmonic compensation.The present invention realizes harmonic compensation Automatic Control, reduces energy consumption and the human input in terms of managing with O&M.
Description
Technical field
The present invention relates to harmonic detecting technique field more particularly to a kind of method of building harmonic compensation, terminal device and
Storage medium.
Background technique
As science and technology and economic development, all kinds of power demands are higher and higher to the standard of power quality, if be used for a long time
The biggish electric energy of divergence indicator will cause the serious consequences such as equipment damage, power consumption efficiency decline, economic loss, and therefore, harmonic wave is controlled
Reason is a nowadays essential ring in electricity system.Under the demand of user, inevitably accessed in building electricity system
More and more non-linear equipments such as energy-saving lamps, teleputer, switchgear etc., these equipment can be used as humorous at work
Wave source generates harmonic pollution in power grid, impacts to power quality.
Building harmonic wave can largely influence the power consumption efficiency and power quality of Building Power Distribution system, therefore configure building
It is necessary that space harmonic filter, which carries out harmonics restraint,.But would generally because of different periods power load it is of different sizes,
So harmonic content contained by line voltage distribution also can be different, the concentrated filter configured in Building Power Distribution room may be unable to satisfy all
The harmonic accuracy requirement of period is not able to satisfy public although can reach certain harmonics restraint benefit in partial period
Requirement of the power grid to power quality.
In traditional system, harmonic environment changeable within one day is faced, the manpower for putting into supervision is very big problem, first
First artificial operation precision can not compare on the reaction time with process control, and be worked for a long time it is possible that slow behaviour
The case where operating even maloperation will cause power quality decline, and equipment life reduction is resulted even in when serious, damage
Situation.
Summary of the invention
To solve the above-mentioned problems, the invention proposes a kind of building harmonic compensation method, terminal device and storage mediums.
Concrete scheme is as follows:
A kind of building harmonic compensation method, comprising the following steps:
S1: centralized compensation module is set on the centrally connected power supply end line of building, is arranged just on the route in each room
Ground compensating module, on centrally connected power supply end line and the route in each room on be respectively arranged to control corresponding compensating module be
The no compensating controller compensated；
S2: by the harmonic content of compensating controller gathering line road, when the harmonic content on centrally connected power supply end line is small
When the harmonic data thresholds of setting, compensating module stops carrying out harmonic compensation, otherwise, compensating controller in compensating controller domination set
Compensating module carries out harmonic compensation in domination set；Compensating controller on the route in each room according to its on the line humorous
Whether wave content control local compensation module carries out harmonic compensation.
Further, the harmonic data thresholds are public electric wire net standard value.
Further, when route is uniline, building is directed to the filter of 3 subharmonic and 5 subharmonic respectively.
Further, when route is three-phase line, building is directed to the filter of 5 subharmonic and 7 subharmonic respectively.
Further, the centralized compensation module and local compensation module are all made of passive filter.
A kind of building harmonic compensation terminal device, including processor, memory and storage are in the memory and can
The computer program run on the processor, the processor realize the embodiment of the present invention when executing the computer program
The step of above-mentioned method.
A kind of computer readable storage medium, the computer-readable recording medium storage have computer program, feature
The step of being, above-mentioned method of the embodiment of the present invention realized when the computer program is executed by processor.
The present invention uses technical solution as above, the harmonic compensation side combined by centralized compensation and each room local compensation
Whether formula compensates, controlled by compensating controller to repaying module and compensate, not only increase harmonic compensation precision,
Automatic Control is also achieved, energy consumption is not only reduced, and without artificial supervision, is largely reduced in pipe
Human input in terms of reason and O&M.
Detailed description of the invention
Fig. 1 show the flow chart that compensating controller works in the embodiment of the present invention one.
Fig. 2 show the physical model schematic diagram in the embodiment.
Fig. 3 show the change curve schematic diagram of harmonic wave in the embodiment.
Fig. 4 show the distortion situation for not accessing centralized compensation time-harmonic wave in the embodiment.
Fig. 5 is shown centralized compensation is only accessed in the embodiment after harmonic wave distortion situation.
Fig. 6 is shown centralized compensation and local compensation are accessed in the embodiment after harmonic wave distortion situation.
Specific embodiment
To further illustrate that each embodiment, the present invention are provided with attached drawing.These attached drawings are that the invention discloses one of content
Point, mainly to illustrate embodiment, and the associated description of specification can be cooperated to explain the operation principles of embodiment.Cooperation ginseng
These contents are examined, those of ordinary skill in the art will be understood that other possible embodiments and advantages of the present invention.
Now in conjunction with the drawings and specific embodiments, the present invention is further described.
Embodiment one:
The embodiment of the invention provides a kind of building harmonic compensation method, specifically: (such as match at the centrally connected power supply end of building
Electric room) centralized compensation module is set on route, local compensation module is set on the route in each room, in centrally connected power supply end line
It is respectively arranged to control the compensating controller whether corresponding compensating module compensates on the route in road and each room；It is logical
The harmonic content of overcompensation controller gathering line road, when the harmonic content on centrally connected power supply end line is less than the harmonic wave threshold of setting
When value, compensating module stops carrying out harmonic compensation in compensating controller domination set, and otherwise, compensating controller controls centralized compensation mould
Block carries out harmonic compensation；Compensating controller on the route in each room according to its harmonic content control on the line on the spot
Whether compensating module carries out harmonic compensation.
The centralized compensation module and local compensation module are common harmonic compensation module, such as filter.Active filter
Wave device (APF) although can functionally make up passive filter can only fixed compensation deficiency, realize dynamic tracing compensation
Active Compensation mode, but it is only applicable to the lower occasion of voltage class.Passive filter is also referred to as LC filter, usually by LC member device
Part composition, is usually filtered for the harmonic waves of specific times, and impedance is lower under specific frequency, the influence for route compared with
Small, technology is more mature, and structure is simple, the technical requirement being able to satisfy under rigid condition, is current extensive utilization on the market
One of harmonics restraint means.And Active filter is complex compared to passive filter, usually by power electronics original
Part and DSP etc. are constituted.Can dynamic detection harmonic current and actively adjust compensation electric current, compensation precision is higher, can dynamic
Filter out each harmonic.But in view of applicable situation voltage class may exceed the working range of active filter, and active filter
There are still some difficulties for being difficult to overcome for wave device, such as the problems such as initial investment is big, and operational efficiency is not high.So in the embodiment
The passive filter for having selected the scope of application wider is as centralized compensation module and local compensation module.
The parameter of filter calculates:
For the quality factor of passive filter usually between 30-60, the calculation formula of relevant parameter is as follows:
Wherein, QCIndicate the reactive power for needing to compensate；P indicates the active power in whole system；Respectively indicate the power-factor angle of compensation front and back；
The numerical value of the resistance C of filter calculates:
Wherein, UnThree-phase phase voltage in expression system should be set as 220V herein；N indicates overtone order；F indicates base
Wave frequency rate is herein 50Hz；
The numerical value of filter L calculates:
The numerical value of filter R calculates:
It is smaller due to working as the harmonic content generated on route, it is not necessarily to the case where accessing centralized compensation at all, only local compensation
It just has been able to meet power quality requirement, if accessing extensive centralized compensation at this time, only will increase the running burden of system, because
This, is provided with compensating controller on the line attachment of centralized compensation.
In the embodiment, when the harmonic content that compensating controller monitors is without departing from the public electric wire net standard of national regulation
Value (usually quintuple harmonics content is lower than 10%, the seventh harmonic content lower than 5%) when, compensating controller is according to the harmonic wave of acquisition
Content data issues control signal to the breaker on centralized compensation route, so that will not to access harmonic wave smaller for centralized compensation filtering
Room compensate.When the harmonic content that compensating controller monitors is without departing from the public electric wire net standard value of national regulation
When, control signal is issued, so that centralized compensation filtering compensates.Compensating controller in each room is according to route where it
On harmonic content control local compensation module whether carry out harmonic compensation, when room harmonic content exceed national regulation public affairs
Local compensation is accessed again when common-battery net standard value, is not otherwise accessed.
In the embodiment, the compensating controller splits current waveform by Fast Fourier Transform (FFT) (FFT),
The harmonic content of different times harmonics is detected, in the embodiment is detection 5 times and the harmonic content of 7 subharmonic, works as harmonic content
More than setting threshold value when, control local compensation module carry out harmonic compensation.Its flow chart is as shown in Figure 1.
Simulated experiment explanation is carried out in the embodiment using laboratory building as building object, the line system of the laboratory building uses
Three-phase system, since the major harmonic number in three-phase system is 5,7 subharmonic, mainly to 5,7 subharmonic in system
It compensates.In single-phase electricity system, since its major harmonic number is 3,5 subharmonic, therefore, it is necessary to 3,5 subharmonic
It compensates.
Physical model in the as shown in Figure 2 embodiment by disperse in bus it is more between the needle that is arranged on room and route
To filter set by 5,7 subharmonic form, modelling by Universal Bridge element form rectification circuit come
Harmonic source on analog line can be simulated with the size parameter by adjusting the threephase load carried different humorous in systems
The case where wave size.
The simulation electricity system by bridge rectifier as harmonic source is built in each room of laboratory building, is being
The case where different harmonic wave sizes can be simulated with the size parameter by adjusting the threephase load carried in system.Finally building
Building Power Distribution system model in, every branch is accordingly filtered on (corresponding to each room) by the breaker control on route
The on off operating mode (be equivalent to and compensate or stop compensating) of device, when the content value of 5,7 subharmonic reaches decision threshold,
System acting issues signal control filter and compensates or stop compensating.
Filter effect:
It is illustrated in figure 3 harmonic wave change curve in three-phase system, from harmonic wave therein from generating to repressed complete
The observation of process is available, and time of the harmonic wave from occurring suppressed whole process is 0.05s or so, therefore the movement of system
Time is shorter.Furthermore it is also possible to fast Fourier analysis is carried out to sample rate current finding out system at the time of 0.1s, according to
Threshold value controls the on-off of breaker, and after system adds local compensation, harmonic amplitude, which has, to be decreased obviously.
It is observed that not surpassing from the time overall length of the moment to the filter switching that reach threshold value from above-mentioned filter effect
0.05s is crossed, far super manual operation on actuation time and precision is subsequent if it is considered that being filter in considering for control strategy
Multiple threshold values are arranged in switching, can further shorten the reaction time of system, reach first in harmonic wave size or aberration rate size
Early warning is first issued when threshold value, system can operate in advance, strengthen cope in complicated electric system on the basis of the original
The fast-changing ability of harmonic wave, can more effectively avoid the manpower for losing, and thus freeing that from can also putting into other
Manually compared to machine work advantageously among.
Compensation effect:
Be illustrated in figure 4 the distortion situation for not accessing centralized compensation time-harmonic wave, Fig. 5 is shown only access centralized compensation after it is humorous
The distortion situation of wave can be seen that THD (the Total Harmonic detected in bus from the comparative situation of Fig. 4 and Fig. 5
Distortion, total harmonic distortion) numerical value never access compensation when 7.47% have decreased to access compensation after 3.12%,
Therefore, conventional physical system has certain income on harmonics restraint really, the accounting of quintuple harmonics be even more be reduced to 2% with
Under, meet country and index is required to the power quality of access public electric wire net.
Fig. 6 show the distortion situation of harmonic wave after access centralized compensation and local compensation in the present embodiment, can be from THD
Data difference on directly find out, the THD of system has on filter effect bigger compared to conventional physical model in the embodiment
Promotion, under the theoretical case for not considering external disturbance, THD is reduced to 0.12%, and advantage is significant.
In the embodiment, being controlled using fully automated for each compensating module is truly realized and is closed
Ring control, without artificial supervision, can largely reduce the manpower in terms of management and O&M other than saving electric energy
Investment can solve the other R&D works of manpower participation for releasing more power domains, reinforce the degree of perfection of electric system, together
When reduce harmonic pollution and be also the reduction of in electricity consumption component the case where unsteady current accesses, aberration rate caused by harmonic wave increases
Severe attrition will cause for the service life of the physical equipments such as transformer greatly, and the Strategies of Maintenance based on life cycle management can be effective
The service life of each component in extension system, and a kind of promotion to income.
Embodiment two:
The present invention also provides a kind of building harmonic compensation terminal device, including memory, processor and it is stored in described
In memory and the computer program that can run on the processor, the processor are realized when executing the computer program
Step in the above method embodiment of the embodiment of the present invention one.
Further, as an executable scheme, the building harmonic compensation terminal device can be desktop calculating
Machine, notebook, palm PC and cloud server etc. calculate equipment.The building harmonic compensation terminal device may include, but not
It is only limitted to, processor, memory.It will be understood by those skilled in the art that the composition knot of above-mentioned building harmonic compensation terminal device
Structure is only the example of building harmonic compensation terminal device, does not constitute the restriction to building harmonic compensation terminal device, can be with
Including than above-mentioned more or fewer components, perhaps combining certain components or different components, such as building harmonic wave benefit
Repaying terminal device can also include input-output equipment, network access equipment, bus etc., and the embodiment of the present invention does not limit this
It is fixed.
Further, as an executable scheme, alleged processor can be central processing unit (Central
Processing Unit, CPU), it can also be other general processors, digital signal processor (Digital Signal
Processor, DSP), it is specific integrated circuit (Application Specific Integrated Circuit, ASIC), existing
At programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete
Door or transistor logic, discrete hardware components etc..General processor can be microprocessor or the processor can also
To be any conventional processor etc., the processor is the control centre of the building harmonic compensation terminal device, using each
The various pieces of kind interface and the entire building harmonic compensation terminal device of connection.
The memory can be used for storing the computer program and/or module, and the processor is by operation or executes
Computer program in the memory and/or module are stored, and calls the data being stored in memory, described in realization
The various functions of building harmonic compensation terminal device.The memory can mainly include storing program area and storage data area,
In, storing program area can application program needed for storage program area, at least one function；Storage data area can be stored according to hand
Machine uses created data etc..In addition, memory may include high-speed random access memory, it can also include non-volatile
Property memory, such as hard disk, memory, plug-in type hard disk, intelligent memory card (Smart Media Card, SMC), secure digital
(Secure Digital, SD) card, flash card (Flash Card), at least one disk memory, flush memory device or other
Volatile solid-state part.
The present invention also provides a kind of computer readable storage medium, the computer-readable recording medium storage has computer
Program, when the computer program is executed by processor the step of the realization above method of the embodiment of the present invention.
If the integrated module/unit of the building harmonic compensation terminal device is realized in the form of SFU software functional unit simultaneously
When sold or used as an independent product, it can store in a computer readable storage medium.Based on such reason
Solution, the present invention realize all or part of the process in above-described embodiment method, can also instruct correlation by computer program
Hardware complete, the computer program can be stored in a computer readable storage medium, the computer program is in quilt
When processor executes, it can be achieved that the step of above-mentioned each embodiment of the method.Wherein, the computer program includes computer program
Code, the computer program code can be source code form, object identification code form, executable file or certain intermediate forms
Deng.The computer-readable medium may include: any entity or device, record that can carry the computer program code
Medium, USB flash disk, mobile hard disk, magnetic disk, CD, computer storage, read-only memory (ROM, ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory) and software distribution medium etc..
Although specifically showing and describing the present invention in conjunction with preferred embodiment, those skilled in the art should be bright
It is white, it is not departing from the spirit and scope of the present invention defined by the appended claims, it in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (7)
1. a kind of building harmonic compensation method, which comprises the following steps:
S1: centralized compensation module is set on the centrally connected power supply end line of building, is arranged on the route in each room and mends on the spot
Repay module, be respectively arranged to control on centrally connected power supply end line and on the route in each room corresponding compensating module whether into
The compensating controller of row compensation；
S2: it by the harmonic content of compensating controller gathering line road, is set when the harmonic content on centrally connected power supply end line is less than
When fixed harmonic data thresholds, compensating module stops carrying out harmonic compensation in compensating controller domination set, otherwise, compensating controller control
Centralized compensation module carries out harmonic compensation；Compensating controller on the route in each room according to its harmonic wave on the line contain
Whether amount control local compensation module carries out harmonic compensation.
2. according to the method described in claim 1, it is characterized by: the harmonic data thresholds are public electric wire net standard value.
3. according to the method described in claim 1, it is characterized by: building is humorous for 3 times respectively when route is uniline
The filter of wave and 5 subharmonic.
4. according to the method described in claim 1, it is characterized by: building is humorous for 5 times respectively when route is three-phase line
The filter of wave and 7 subharmonic.
5. according to the method described in claim 1, it is characterized by: the centralized compensation module and local compensation module are all made of
Passive filter.
6. a kind of building harmonic compensation terminal device, it is characterised in that: including processor, memory and be stored in the storage
The computer program run in device and on the processor, the processor realize such as right when executing the computer program
It is required that in 1~5 the step of any the method.
7. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, and feature exists
In when the computer program is executed by processor in realization such as Claims 1 to 5 the step of any the method.
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