CN105449670B - A kind of distribution network load characteristic analysis method - Google Patents
A kind of distribution network load characteristic analysis method Download PDFInfo
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- CN105449670B CN105449670B CN201510919407.9A CN201510919407A CN105449670B CN 105449670 B CN105449670 B CN 105449670B CN 201510919407 A CN201510919407 A CN 201510919407A CN 105449670 B CN105449670 B CN 105449670B
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- 230000001131 transforming effect Effects 0.000 claims description 19
- 238000004364 calculation method Methods 0.000 claims description 6
- 230000001186 cumulative effect Effects 0.000 claims description 6
- 238000011161 development Methods 0.000 claims description 2
- 238000004451 qualitative analysis Methods 0.000 claims description 2
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/06—Energy or water supply
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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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Abstract
The invention discloses a kind of distribution network load Characterization method.Load Characteristic Analysis and investigation are the bases of Power System Planning, are the necessary means in user and market in understanding and prediction compass of competency.Resident load and industry and commerce load are the important components of city load, and it is investigated, significant to load prediction, the formulation of power supply plan, urban power network planning, economy operation of power grid and Marketing of Power Market.This method carries out analytic statistics to the load in 10kV distributions, study daily load characteristic, influence factor and the changing rule of various loads, and form typical day curve, the method of operation, the work such as make rational planning for can be arranged to provide foundation for power distribution network, and the constantly improve for the advanced application of distribution provides support.
Description
Technical field
The present invention relates to the analysis application module in distribution automation system.
Background technology
Electric load is the important component of power network.Load monitoring and management are to transformer station, power plant and whole electric power
The operation of system is significant.It is transformer station's spatial load forecasting, and power plant arranges daily trading planning, determines Operation of Electric Systems
The Plant maintenance plan such as mode and main transformer, generating set and transformer station, power plant extend the foundation of newly-built planning.Together
When, after grasping part throttle characteristics, by reasonably, in a planned way arranging the electricity consumption time of all types of user, network load song can be optimized
Line, reduce peak load and the difference of minimum load, make load curve figure relatively flat, so as to be advantageous to make full use of hair
Electricity, power supply unit (main transformer etc.) capacity, improve the economy of system operation.
With the progress of society and popularizing for electric energy, the scope of electric power application is more and more extensive.On the one hand, by electric power
The characteristics of system and power consumer electricity consumption, is determined that electric load has the characteristics of continuity, regular；On the other hand, due to
There is contacting for countless ties with many factors such as society, economy, politics, meteorology, electric load shows certain random again
Property.
Dimension, analytic statistics can be carried out to the load in 10kV distributions, study the daily load characteristic of various loads, influence
Factor and changing rule, and form typical day curve, the method for operation can be arranged for power distribution network, is made rational planning for etc. work provide according to
According to, and the constantly improve for the advanced application of distribution provides support.
The content of the invention
Goal of the invention：In order to grasp the operation characteristic of regional load, the present invention provides a kind of distribution network load specificity analysis
Method, this method carry out analytic statistics to the load in 10kV distributions, study daily load characteristic, the influence factor of various loads with
And changing rule, and typical day curve is formed, the work such as can arrange the method for operation for power distribution network, make rational planning for provide foundation, and
Constantly improve for the advanced application of distribution provides support.
Technical scheme：In order to solve the above technical problems, the technical solution adopted by the present invention is：
Step 1：According to outlet switch ID, topology search inquiry downstream institute band distribution transforming situation is enabled, obtains these distribution transformings ID；
Step 2：Judge the load type of distribution transforming, if public become then into resident load, specially become then into industrial and commercial load；
Step 3：Capacity of distribution transform, electric current and active power value are obtained according to distribution transforming ID；
Step 4：Count number of users, capacity and the proportion of two types load.
Step 5：After starting Load Characteristic Analysis, the part throttle characteristics point set by downstream load statistics of features interface is obtained
Analyse parameter；
Step 6：Determined to carry out the period of Load Characteristic Analysis according to parameter, call dynamic bank interface, obtained outlet and open
Close the active power sampled value in the period；
Step 7：Judge whether sampled data is complete, if imperfect pop-up dialogue box prompting data are imperfect, Wu Fajin
Row Load Characteristic Analysis；
Step 8：Search out typical day of the peak day in the period as Load Characteristic Analysis；
Step 9：Obtain the sampled data of the typical case in a few days each distribution transforming in downstream；
Step 10：Judge whether the sampled data of each distribution transforming is complete, if imperfect pop-up dialogue box prompting data are not
Completely, Load Characteristic Analysis can not be carried out；
Step 11：The switching data of acquisition is added up, by cumulative the data obtained forming curves and shown；
Step 12：According to cumulative obtained data parameter and show.
Beneficial effect：Distribution network load characteristic analysis method provided by the invention, the method achieve in 10kV distributions
Load carry out analytic statistics, by studying daily load characteristic, influence factor and the changing rule of load, and form typical day
Curve, for method of operation arrangement, making rational planning for provides technical support.
Brief description of the drawings
Fig. 1 is downstream load statistics of features method.
Fig. 2 is Load Characteristic Analysis method.
Embodiment
1st, downstream load statistics of features
Downstream load statistics of features is to clear outlet switch downstream residential electricity consumption load, service trade power load, industry and commerce
Several big load species such as power load, illuminating and heating power load, and count the proportion of total load shared by each type load.This
The purpose of work is to grasp the changing rule of different load, and then providing the higher typical load curve of accuracy rate and prepare.
Wherein, Distribution Network Load Data species is defined as two classes：Residential electricity consumption load and industry and commerce power load.Searched by topology
Rope downstream institute band distribution transforming situation, and obtain the public quantity and rated capacity, electricity for becoming (resident load) and specially becoming (industry and commerce load)
The information such as stream and active power, counts two types load number of users, total capacity and proportion on this basis.
Comprise the following steps that：
Step 1：According to outlet switch ID, topology search inquiry downstream institute band distribution transforming situation is enabled, obtains these distribution transformings ID；
Step 2：Judge the load type of distribution transforming, if public become then into resident load, specially become then into industrial and commercial load；
Step 3：Capacity of distribution transform, electric current and active power value are obtained according to distribution transforming ID；
Step 4：Count number of users, capacity and the proportion of two types load.
2nd, Load Characteristic Analysis
Part throttle characteristics is periodically and regular due to existing, thus can be found by Load Characteristic Analysis in it rule
Property.This programme carries out daily load specificity analysis using index method and curve method in terms of qualitative and be quantitative two.
Index method is to represent part throttle characteristics by the index of various part throttle characteristics, can with index method analysis load characteristic
Quantitatively to describe the development and change of part throttle characteristics.Curve method is a kind of most direct Load Characteristic Analysis method, passes through drafting
Load curve can intuitively represent part throttle characteristics, be mainly used in qualitative analysis part throttle characteristics.
Index calculating method：
Daily treatment cost：In the load of typical day entry, maximum one.
Day minimum load：In the load of typical day entry, minimum one.
Daily load rate：The ratio of average load and maximum load, calculation formula are as follows：
Day ratio of minimum load to maximum load：Day minimum load and the ratio when Daily treatment cost, calculation formula are as follows：
Day peak-valley difference：The difference of Daily treatment cost and day minimum load.
Day peak-valley ratio：Day peak-valley difference and the ratio when Daily treatment cost, calculation formula are as follows：
Typical day load curve：By the curve drawn in one day by hour (half an hour, 15min) load variations.
Load Characteristic Analysis step is as follows：
Step 1：After starting Load Characteristic Analysis, the part throttle characteristics point set by downstream load statistics of features interface is obtained
Analyse parameter；
Step 2：Determined to carry out the period of Load Characteristic Analysis according to parameter, call dynamic bank interface, obtained outlet and open
Close the active power sampled value in the period；
Step 3：Judge whether sampled data is complete, if imperfect pop-up dialogue box prompting data are imperfect, Wu Fajin
Row Load Characteristic Analysis；
Step 4：Search out typical day of the peak day in the period as Load Characteristic Analysis；
Step 5：Dynamic bank interface is called, obtains the sampled data of the typical case in a few days each distribution transforming in downstream；
Step 6：Judge whether the sampled data of each distribution transforming is complete, if imperfect pop-up dialogue box prompting data are endless
It is whole, Load Characteristic Analysis can not be carried out；
Step 7：The switching data of acquisition is added up, by cumulative the data obtained forming curves and shown；
Step 8：According to cumulative obtained data parameter and show.
In addition, the concrete methods of realizing and approach of the present invention are a lot, described above is only the preferred embodiment of the present invention.
It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, it can also do
Go out some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.What is be not known in the present embodiment is each
The available prior art of part is realized.
Claims (1)
1. a kind of distribution network load characteristic analysis method, it is characterised in that comprise the following steps：
Step 1：According to outlet switch ID, topology search inquiry downstream institute band distribution transforming situation is enabled, obtains these distribution transformings ID；
Step 2：Judge the load type of distribution transforming, if public become then into resident load, specially become then into industrial and commercial load；
Step 3：Capacity of distribution transform, electric current and active power value are obtained according to distribution transforming ID；
Step 4：Count number of users, capacity and the proportion of two types load；
Step 5：After starting Load Characteristic Analysis, obtain the Load Characteristic Analysis set by downstream load statistics of features interface and join
Number；
Step 6：Determined to carry out the period of Load Characteristic Analysis according to parameter, call dynamic bank interface, obtaining outlet switch should
Active power sampled value in period；
Step 7：Judge whether sampled data is complete, if imperfect pop-up dialogue box prompting data are imperfect, can not be born
Lotus specificity analysis；
Step 8：Search out typical day of the peak day in the period as Load Characteristic Analysis；
Step 9：Obtain the sampled data of the typical case in a few days each distribution transforming in downstream；
Step 10：Judge whether the sampled data of each distribution transforming is complete, if imperfect pop-up dialogue box prompting data are imperfect,
Load Characteristic Analysis can not be carried out；
Step 11：The switching data of acquisition is added up, by cumulative the data obtained forming curves and shown；
Step 12：According to cumulative obtained data parameter and show；
Wherein,
Distribution network load specificity analysis is carried out using two methods of index method and curve method, index method is by various part throttle characteristics
Index represent part throttle characteristics, the development and change of part throttle characteristics are described with index method analysis load property quantification；Curve
Method is a kind of most direct Load Characteristic Analysis method, can intuitively represent part throttle characteristics by drawing load curve, be used for
Qualitative analysis part throttle characteristics；
Index calculating method is：
Daily treatment cost：In the load of typical day entry, maximum one；
Day minimum load：In the load of typical day entry, minimum one；
Daily load rate：The ratio of average load and maximum load, calculation formula are as follows：
Day ratio of minimum load to maximum load：Day minimum load and the ratio when Daily treatment cost, calculation formula are as follows：
Day peak-valley difference：The difference of Daily treatment cost and day minimum load；
Day peak-valley ratio：Day peak-valley difference and the ratio when Daily treatment cost, calculation formula are as follows：
Typical day load curve：The curve drawn by the load variations of the unit interval in one day.
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| CN105930930B (en) * | 2016-04-21 | 2021-04-09 | 国电南瑞科技股份有限公司 | Load data calibration method based on load characteristic analysis and load prediction technology |
| CN106446345B (en) * | 2016-08-30 | 2019-08-20 | 国网江苏省电力公司 | Distribution operating index processing method based on subdivision geographic area |
| CN106447123A (en) * | 2016-10-14 | 2017-02-22 | 国网天津市电力公司 | Typical daily load characteristics based substation locating method and substation locating device |
| CN106779237B (en) * | 2016-12-29 | 2020-12-29 | 天津大学 | Load curvilinearization prediction method for active power distribution network from bottom to top |
| CN113131469B (en) * | 2021-04-19 | 2023-04-18 | 广东电网有限责任公司佛山供电局 | Static load analysis method and device |
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| CN104505825A (en) * | 2014-12-15 | 2015-04-08 | 国家电网公司 | Power supply safety diagnosis analysis method for high voltage distribution network |
| EP2950414A1 (en) * | 2013-01-24 | 2015-12-02 | Kabushiki Kaisha Toshiba | Power system control system |
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| EP2950414A1 (en) * | 2013-01-24 | 2015-12-02 | Kabushiki Kaisha Toshiba | Power system control system |
| CN104505825A (en) * | 2014-12-15 | 2015-04-08 | 国家电网公司 | Power supply safety diagnosis analysis method for high voltage distribution network |
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