CN106786637A - Comprehensive compensating device collocation method based on shopping centre load group's external behavior - Google Patents
Comprehensive compensating device collocation method based on shopping centre load group's external behavior Download PDFInfo
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- CN106786637A CN106786637A CN201611008514.7A CN201611008514A CN106786637A CN 106786637 A CN106786637 A CN 106786637A CN 201611008514 A CN201611008514 A CN 201611008514A CN 106786637 A CN106786637 A CN 106786637A
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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
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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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
A kind of comprehensive compensating device collocation method based on shopping centre load group's external behavior is provided it is an object of the invention to be directed to low pressure shopping centre, is comprised the following steps that：Step one, the daily load curve according to shopping centre, obtain the corresponding active power mean value of each preset time period and reactive power average value；Step 2, according to the corresponding active power mean value of each preset time period and reactive power average value generation static load model；Step 3, the reactive compensation capacity that each preset time period is drawn according to static load model.
Description
Technical field
It is the invention belongs to power quality control technology field more particularly to a kind of based on shopping centre load group's external behavior
Comprehensive compensating device collocation method.
Background technology
With the quickening of Development of China's Urbanization, the progress of society and the raising of people's living standard, the whole society powers to power network
The requirement of quality and power supply reliability is increasingly improved.Especially business and resident living power utility load continue the city tertiary industry
Increase, a large amount of nonlinear-loads and load or burden without work put into operation so that the enabling capabilities of current power distribution network substantially weaken, the quality of power supply
Problem is more serious.
Mainly there be the main power quality controlling equipment for using in Practical Project：Fixed capacity device (FC), passive filter
(PPF), the Passively compensated device such as static passive compensation device (SVC), and active filter (APF), static reacance generator
(SVG) active power compensator such as.All be present certain benefit and limitation in each of which, the advantage of comprehensive different device, pass through
Suitable control and capacity are distributed rationally, develop the electric energy composite control apparatus that active equipment coordinates operation with inactive component, are property
Valency is widely studied at present than a kind of best scheme.
Compensation capacity distribute rationally be device compensation effect important leverage.The collocation method of conventional table area compensation device
Usually capacity is compensated by the 20%~30% of distribution transformer to choose, according to the fluctuation of customer charge level, put into phase
The capacitor of quantity is answered to be tracked compensation, main purpose is to improve the power factor of platform area user, realizes reactive power in-situ
Compensation.Although this collocation method advantageously ensures that the quality of power supply of user, but the switching amount of reactive power may be with actual need
Ask and differ greatly, overcompensation or under-compensated situation easily occur, influence Operation of Electric Systems.The present invention proposes a kind of based on business
The comprehensive compensating device collocation method of Ye Tai areas load group's external behavior, for the operation characteristic of typical commercial platform area load, builds
Vertical business platform area load group overall outer characteristic model, is carried out excellent according to load model to the capacity of active device and passive device
Change configuration.
The content of the invention
Shortcoming and defect it is an object of the invention to overcome prior art, provides a kind of based on business for low pressure shopping centre
The comprehensive compensating device collocation method of industry area load group's external behavior, comprises the following steps that：
Step one, the daily load curve according to shopping centre, obtain the corresponding active power mean value of each preset time period and
Reactive power average value；
The lighting load main including megastore, senior office building and hotel etc. of shopping centre load, temperature adjustment load,
Living load and office load etc..Its feature is mainly shown as that peak is higher with gentle period load, and low-valley interval load is omited
Low, peak-valley difference is big, and rate of load condensate is relatively low, and fluctuation is smaller, and in close relations with temperature change.Additionally, air-conditioning in Commercial Load
Proportion shared by load is larger, and overall load characteristic shows extremely strong timeliness and seasonality.
It is step 2, static negative according to the corresponding active power mean value of each preset time period and the generation of reactive power average value
Lotus model；
Due to Commercial Load to illuminate, based on the static load such as air-conditioning, so the external behavior of shopping centre load group can be with
Described by setting up a static models.Based on the analysis of step a pair of shopping centre part throttle characteristics, with reference to load curve, pass through
Linear fit can obtain static load model.
Step 3, the reactive compensation capacity that each preset time period is drawn according to static load model.
It is analyzed by the static load model that step 2 is set up, shopping centre load can be calculated to reactive power
Primary demand capacity and dynamic change capacity, and power factor change.According to static load model analysis result, to mending
The capacity for repaying device active part and passive part is configured.The demand feelings of the reactive load power drawn according to step 3
Condition, in order to improve compensation effect while reducing cost of compensation, using the reactive load that passive part compensation is fixed, active part is mended
The prioritization scheme of the reactive load of change is repaid, the capacity to compensation device active part and passive part is configured.
Preferably, in the above-mentioned methods, the preset time period is by being divided in the same time in one day, when being divided into low ebb
Section, morning peak period, gentle period and evening peak period.
Preferably, in the above-mentioned methods, the static load model is A=P1+jP2, and wherein A is low-valley interval or early high
Peak period or the overall static load of gentle period or evening peak period, P1, P2 be respectively its corresponding active power mean value,
Reactive power average value, j is external power factor angle.
Preferably, in the above-mentioned methods, when can also draw low-valley interval or morning peak according to the static load model
Section or gentle period or evening peak period corresponding power factor, the power factor is defined as
Preferably, in the above-mentioned methods, the reactive compensation capacity isIt is wherein described
It is target power factor angle.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the flow chart of the comprehensive compensating device collocation method based on shopping centre load group's external behavior；
Fig. 2 is the day active power load curve of the corresponding specific embodiments of Fig. 1；
Fig. 3 is the day reactive power load curve of the corresponding specific embodiments of Fig. 1；
Fig. 4 is the day power factor curve of the corresponding specific embodiments of Fig. 1；
Fig. 5 be the corresponding specific embodiments of Fig. 1 day active power load curve with the active power of static load model
Comparison diagram.
Fig. 6 be the corresponding specific embodiments of Fig. 1 day reactive power load curve with the reactive power of static load model
Comparison diagram.
Fig. 7 be the corresponding specific embodiments of Fig. 1 day power factor with the power factor comparison diagram of static load model.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 to Fig. 7 is referred to, a kind of comprehensive compensation based on shopping centre load group's external behavior in the embodiment of the present invention
Device collocation method, including：
101st, according to the daily load curve of shopping centre, the corresponding active power mean value of each preset time period and idle is obtained
Power average value；
At present, division being carried out to electricity consumption region can be divided into Agriculture, forestry And Animal Husbandry fish area, industrial area, shopping centre, government utility area and residence
People living area；Power system load can be generally divided into city appliance load, Commercial Load, rural area load, industrial load and
Other classes of load five, the characteristics of different types of load has different and rule.
In the present embodiment, daily load curve includes day active power load curve and day reactive power load curve, laterally
On, preset time period is divided into low-valley interval, morning peak period, gentle period and evening high by not divided in the same time in one day
The peak period.
102nd, according to the corresponding active power mean value of each preset time period and reactive power average value generation static load
Model；
At present in load modeling, according to whether the dynamic characteristic of reflection load, load model is generally divided into two types：
Static load model and dynamic load model；
Wherein static load model is A=P1+jP2, wherein A is the overall static load of a certain preset time period, P1For this
Active power mean value in preset time period, P2It is the reactive power average value in the preset time period, j is external power factor
The angle at angle, i.e. active power and apparent energy.
According to the static load model, the power factor of each preset time period, power factor can be drawnFor
103rd, the reactive compensation capacity of each preset time period is drawn according to static load model；
In formula：Δ Q is reactive compensation capacity；P1It is active power；It is the work(before compensation
Rate factor angle, can be in the hope of by table 2；It is the power-factor angle after compensation, i.e. target power factor angle will with reference to power department
Determination is asked, low-voltage network typically requires to be not less than 0.95.
Because reactive compensation capacity includes Passive Reactive Power Compensation part and active reactive-load compensation part, passive filtering and active
The mixing arrangement of reactive-load compensator can inject the advanced or delayed reactive power of continuously adjustabe to power network, it is assumed that the circuit system
Compensable idle total capacity of uniting is Δ Q, then the capacity of passive filtering part and the capacity of active reactive-load compensator can bases
It is actually needed and optimizes configuration.
It is illustrated as one embodiment using In Guangdong Province shopping centre below, Fig. 2 and Fig. 3 is In Guangdong Province
The day active power load curve and day reactive power load curve in typical commercial area, the daily load curve to the area is divided
Analysis, it can be seen that power distribution station load had notable difference within one day, and peak load appears at 19 points, and Gu He appears at 8 points,
Load peak-valley difference is about 168kW, and average load is about 84kW, and load boom period appears in 11:00~14:00 and 17:00~21:
00 two time periods, now exactly commercial street food and drink, shopping, amusement peak time, wherein 17:00~21:It is high during 00
Peak becomes apparent, because commercial street night flow of the people is bigger than daytime, the public place of entertainment business hours such as some KTV are main at night；
The load valley phase goes out 23:00~8:00, now all kinds of dining rooms in commercial street, market, public place of entertainment have all gradually been closed.Additionally,
Power factor such as Fig. 4 to this area load is analyzed, it can be seen that the ensemble average level of power factor is not high, about
0.85, and change over time uneven, reached in the low ebb phase minimum.
Shown in table specific as follows：
The corresponding active power mean value of each preset time period of table one and reactive power average value
It it is morning peak period, gentle period, evening peak period and low-valley interval is corresponding has according to above-mentioned preset time period
Work(power average value and reactive power average value, can set up following static load model：
After by the static load model image conversion, and Fig. 2 and Fig. 3 day active power load curve and day reactive power bear
Lotus curve is contrasted respectively, and comparing result is as shown in Figure 5 and Figure 6, it can be seen that static load model substantially meets actual negative
The power characteristic of lotus.
The average power factor of each preset time period can be calculated according to above-mentioned static load model, as shown in table 2, will
The average power factor is contrasted with actual power factor, as shown in Figure 7.
The corresponding average power factor of each preset time period of table one
TakeIt is 0.95,It is the power factor for requiring to reach after compensation, can refer to power department requirement determination,
0.9~0.95 is may generally be, according to above-mentioned data, then the reactive power that shopping centre load needs are compensated calculates result such as table 3
It is shown：
The business platform area load of table 3 needs the reactive power of compensation
The advantage of business power distribution station comprehensive compensating device is active and passive device mixed running, can be realized idle
Dynamic compensation can reduce the capacity of active part again, therefore passive part is responsible for that the basic fixation of compensation is idle, and active part is born
The dynamic reactive of duty compensation change.Based on above principle, the reactive-load compensation demand with reference to shown in table 3 can be by business distribute-electricity transformer district
The capacity configuration of comprehensive compensating device is as follows：
| Passive part | Active part | |
| Capacity configuration (kVar) | 20 | 10 |
The beneficial effects of the present invention are the analysis according to business distribute-electricity transformer district load group's external behavior is comprehensively mended to electric energy
The capacity for repaying device active part and passive part optimizes configuration.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention has been described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent to which part technical characteristic；And these modification or
Replace, do not make the spirit and scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution.
Claims (5)
1. it is a kind of based on shopping centre load group external behavior comprehensive compensating device collocation method, it is characterised in that including：
According to the daily load curve of shopping centre, obtain the corresponding active power mean value of each preset time period and reactive power is average
Value；
According to the corresponding active power mean value of each preset time period and reactive power average value generation static load model；
The reactive compensation capacity of each preset time period is drawn according to static load model.
2. the comprehensive compensating device collocation method based on shopping centre load group's external behavior according to claim 1, it is special
Levy and be, the preset time period by not divided in the same time in one day, be divided into low-valley interval, the morning peak period, it is gentle when
Section and evening peak period.
3. the comprehensive compensating device collocation method based on shopping centre load group's external behavior according to claim 2, it is special
Levy and be, the static load model is A=P1+jP2, wherein A is that low-valley interval or morning peak period or gentle period or evening are high
The overall static load of peak period, P1、P2Respectively its corresponding active power mean value, reactive power average value, j is external work
Rate factor angle.
4. the comprehensive compensating device collocation method based on shopping centre load group's external behavior according to claim 3, it is special
Levy and be, when can also draw low-valley interval or morning peak period or gentle period or evening peak according to the static load model
The corresponding power factor of section, the power factor is defined as
5. the comprehensive compensating device collocation method based on shopping centre load group's external behavior according to claim 4, it is special
Levy and be, the reactive compensation capacity isIt is wherein describedIt is target power factor angle.
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Cited By (2)
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| CN111490544A (en) * | 2020-03-13 | 2020-08-04 | 国网江苏省电力有限公司盐城供电分公司 | Passive filter parameter optimization method based on hole punching function |
| CN113077148A (en) * | 2021-04-01 | 2021-07-06 | 四川中电启明星信息技术有限公司 | Residential area openable capacity assessment method considering communication people flow data |
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| CN113077148A (en) * | 2021-04-01 | 2021-07-06 | 四川中电启明星信息技术有限公司 | Residential area openable capacity assessment method considering communication people flow data |
| CN113077148B (en) * | 2021-04-01 | 2023-06-02 | 四川中电启明星信息技术有限公司 | Residential area openable capacity assessment method considering communication people stream data |
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