CN106532698B - A kind of Theoretical Line Loss of Distribution Network rate calculation method - Google Patents
A kind of Theoretical Line Loss of Distribution Network rate calculation method Download PDFInfo
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- CN106532698B CN106532698B CN201710009708.7A CN201710009708A CN106532698B CN 106532698 B CN106532698 B CN 106532698B CN 201710009708 A CN201710009708 A CN 201710009708A CN 106532698 B CN106532698 B CN 106532698B
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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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- 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 present invention relates to a kind of Theoretical Line Loss of Distribution Network rate calculation method, the distribution transformer that on the one hand will acquire accurate electricity carries out theoretical loss calculation calculating by coulometry；On the other hand the distribution transformer that will not be able to acquire accurate electricity first passes through volumetric method and carries out proportion conversion, i.e., carries out power energy allocation to above-mentioned distribution transformer, and result after conversion is passed through to coulometry again and carries out theoretical loss calculation calculating.The present invention is after actual use, management and technical problem can be found in time, line loss is reduced to adopt an effective measure, it is horizontal to improve Controlling line loss, to solve the problems, such as that it is larger to calculate inaccuracy, deviation for Theoretical Line Loss of Distribution Network rate at this stage, power grid utilization rate of electrical is improved, income of electricity charge is increased, the profit for enhancing power grid enterprises is horizontal.
Description
Technical field
The present invention relates to power economy index study technical field more particularly to a kind of Theoretical Line Loss of Distribution Network rate calculating sides
Method.
Background technique
Power network line losses rate (abbreviation line loss per unit) is electric power enterprise one important integrated technology economic indicator, together
When to also reflect the planning and designing of power grid, production technology and operation management horizontal.Electric energy is powered in conveying and distribution electric energy and is set
Standby energy loss is known as theory wire loss, it is distributed according to the parameter of power supply unit and the method for operation of power network and its trend
Situation, the line loss obtained by theoretical calculation.Energy loss regularity of distribution in power grid can be found by theoretical calculation, pass through calculating
Analysis can expose management and technical problem, work decreasing loss and provide theory and technology foundation, decreasing loss can be made to work
It concentrates on crucial points, improves the benefit of saving energy and decreasing loss, keep Controlling line loss more scientific.
Complicated work when theoretical line loss caluclation, 35kV and the above power grid mostly use tidal current computing method to carry out Molded Line
Damage calculates, and this method data volume, calculation amount are all larger, but computational accuracy is high, is suitable for 35kV and the above power grid；10kV and
Following distribution network line branch is more, load is big, data volume is more, situation is complicated, larger using Load flow calculation difficulty, at present engineering
Theoretical line loss caluclation mainly is carried out using coulometry or volumetric method in practice.
Under equal conditions, the theory wire loss calculated using coulometry specific capacity method is more accurate, still, by distribution
Acquisition system acquires the influence of the accuracy and integrality of electricity, and not all distribution line all uses electricity in actually calculating
Amount method carries out calculating line loss per unit.Comb distribution line acquisition data when, if it find that the promising distribution transforming for collecting electricity or
Data inaccuracy is acquired, then this distribution line just needs to calculate line loss per unit, the line loss calculated in this way using volumetric method
Electricity deviation is larger, and in rural power grids, such case is relatively common.
Application number: 200910303895.5 Chinese patent discloses a kind of line Loss Analysis for Power Distribution Network system, although can
Basic line loss data is obtained, and obtains line loss information after carrying out data processing, but on the one hand the analysis system can not automatically more
New network station table information, quick positioning when being unfavorable for line anomalies to fault point on the other hand can not be instant after data analysis
Provide effective specific improvement project.
Summary of the invention
It is an object of the invention to solve above-mentioned technical problem, a kind of Theoretical Line Loss of Distribution Network rate calculation method is provided, it can
It is horizontal to improve Controlling line loss so that adopting an effective measure reduces line loss for discovery management in time and technical problem.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of Theoretical Line Loss of Distribution Network rate calculation method, including
Following steps:
1) electric power information collection system is installed in power distribution network low-pressure side, for acquiring total electricity consumption of low-pressure side distribution transformer
Measure WAlwaysWith separate unit distribution transformer electricity consumption Wi；
2) electric power information collection system connects electric network information database by peripheral port, for determining that low-pressure side distribution becomes
The distribution of depressor and total number of units NAlways；
3) electric power information collection system will acquire information and be sent into processor, can collect accurate electricity by processor judgement
The distribution transformer of amount, and calculate total number of units N of these distribution transformers1With collected electricity summation W1；
4) distribution transformer that accurate electricity will be acquired by processor carries out theoretical loss calculation meter by coulometry
It calculates；
5) the specified total capacity that the distribution transformer of accurate electricity cannot be acquired by the determination of electric network information database is S,
Total number of units is (NAlways-N1), the capacity of separate unit distribution transformer is respectivelyThen these distribution transformers
Total electricity consumption be (WAlways-W1) degree；
6) volumetric method is first passed through by the distribution transformer that processor will not be able to acquire accurate electricity and carries out proportion conversion,
Power energy allocation is carried out to above-mentioned distribution transformer, distribution principle is according to capacity accounting distribution principle, above-mentioned distribution transformer
Electricity consumption be respectively It will conversion
Result carries out theoretical loss calculation calculating by coulometry again afterwards.
Further, the electric power information collection system is D5000 system, and it is low to be installed in 110kV, 35kV or 220kV
Side is pressed, the information about power of low-pressure side route is acquired.
Further, electric network information database includes power network GIS platform, and connects electric power saving distribution prison by peripheral port
Electric network information data are configured to data storage layer, provide general data storage service by examining system, and are provided measured logical
With data exchange, information interconnection and message reference are realized.
Further, the peripheral port includes man-machine interactive interface and network communication interface.
Further, the man-machine interactive interface can provide query function, and can input electrical parameter.
Further, the network communication interface includes the multichannel that can be connect with the electric network information database each unit
Communication channel, the multiple communication channels are using wireless transmission or the connection of limited optical fiber.
Further, the processor includes the DSP unit connecting with electric network information database, the DSP unit connection
Data comparator, data register and emulation graphics software.
Further, the emulation graphics software includes matlab simulated program.
The beneficial effect of the method for the present invention can be mainly reflected in several aspects:
1, this method collects electric network data by electric power information collection system specific aim, on the one hand may be implemented pair
The real time monitoring of electricity data, on the other hand, by and electric network information database combination, to collected electrical parameter carry out
It analyses and compares, the distribution transformer number finding out the distribution transformer number that can accurately calculate and cannot accurately calculating, and take respectively
Different calculation method carries out theoretical loss calculation, in particular for the distribution transformer that cannot accurately calculate, using capacitance method and
The combination method of coulometry calculates, and compared with existing theoretical line loss caluclation method, the line loss per unit calculated in this way is more
The closely true theoretical loss calculation of adjunction
2, the present invention being used cooperatively by collector and processor, while the function of acquisition, analysis is had both, it can be big
The line loss model expanded is analyzed in the power grid existing database Equipment Foundations of amount, and is directed to power grid actual conditions, passes through alignment
Differentiation electricity whether really adopts data and is studied, analyzed and calculated, and obtains the reason of controller switching equipment equipment in various situations
By line loss level, therefore there is very high practicability.
2, guiding.This method has the architecture of directiveness, is considering theory wire loss, regional economy level and distribution
Under the premise of equipment equipment, differentiation calculates that operation control line loss is horizontal, in conjunction with current line loss performance assessment criteria and
The system of rewards and penalties, it is reasonable to give appearance area's line loss examination value.The work incentive of institute, township staff can be transferred, improve and return by reaching
The purpose of operation of power networks cost, raising enterprise income can be reduced again by belonging to sense and centripetal force.
3, after actual use of the invention, management and technical problem can be found in time, thus reduction of adopting an effective measure
It is horizontal to improve Controlling line loss for line loss, thus solve the problems, such as that the inaccuracy of Theoretical Line Loss of Distribution Network rate calculating at this stage, deviation are larger,
Power grid utilization rate of electrical is improved, income of electricity charge is increased, the profit for enhancing power grid enterprises is horizontal.
Detailed description of the invention
Fig. 1 is flow chart of the method for the present invention.
Fig. 2 is structural schematic diagram of the invention.
Specific embodiment
As shown in Figure 1 and Figure 2, by taking the Calculating Network Theoretical Line Loss rate for acquiring 10KV route calculates as an example, the method for the present invention is carried out
It illustrates:
According to existing operation of power networks acquisition mode, D5000 is generally all installed in 110kV, 35kV or 220kV low-pressure side
Acquisition system, the system can collect the total electricity consumption W of 10kV routeAlwaysDegree；
By electric network information database, determine that the total number of units of the distribution transformer hung under 10kV distribution line is NAlwaysPlatform；
It is compared by the analysis of processor, determines that distribution transformer can collect electricity and the electricity acquired is accurately matched
Piezoelectric transformer number of units is N1Platform, collected electricity summation are W1Degree；
The distribution transformer for acquiring accurate electricity is subjected to theoretical loss calculation calculating using coulometry, and residue acquires electricity
Inaccuracy and the distribution transformer for not collecting electricity carry out theoretical loss calculation calculating using volumetric method；
Acquisition electricity inaccuracy and the distribution transformer number of units for not collecting electricity are (NAlways-N1) platform, above-mentioned distribution transformer
Device total capacity S, the capacity of above-mentioned distribution transformer are respectivelyAbove-mentioned distribution transformer total electricity consumption is
(WAlways-W1) degree；
According to the basic principle of volumetric method, need to carry out power energy allocation to above-mentioned distribution transformer, according to distribution principle
Capacity accounting distribution principle, the electricity consumption of above-mentioned distribution transformer are respectively Coulometry is recycled to calculate theoretical line loss per unit；
Compared with existing theoretical line loss caluclation method, line loss that the connected applications of capacitance method and coulometry calculate
Rate is more nearly true theoretical loss calculation, and eventually by the emulation graphics software that processor connects, processor includes believing with power grid
The DSP unit of database connection is ceased, DSP unit connects data comparator, data register and emulation graphics software, emulation drawing
Software can use matlab simulated program, and theory wire loss data and curves are drawn out.
It mainly includes electric power information collection system 1 that system of the invention, which is constituted, and electric power information collection system 1 connects power grid letter
Cease database 2.Electric network information database includes power network GIS platform, and connects electric power saving distribution monitoring system by peripheral port 3
4, electric network information data are configured to data storage layer, general data storage service is provided, and measured general number is provided
According to exchange, information interconnection and message reference are realized.
Peripheral port 3 includes man-machine interactive interface 5 and network communication interface 6.Man-machine interactive interface can provide inquiry function
Can, and electrical parameter can be inputted.Network communication interface includes the multiple pass that can be connect with electric network information database each unit
Believe channel, multiple communication channels are using wireless transmission or the connection of limited optical fiber.
For the application effect of the method for the present invention in practice, can be shown by following data:
By taking power supply company, the county A, Henan Province as an example, the whole county area Gong Biantai number be 945, higher to wherein Low-voltage Line Loss 162
The area Ge Tai distribution transformer uses line loss analyzing method provided by the present invention, to calculate accurate theory wire loss
Value.And decreasing loss rectification is pointedly carried out to 89 in these areas according to result, and to integrated distribution in the 56 of rural area
The distribution transforming of the area Ge Tai has carried out capacity-increasing transformation, and the rectification area Hou Tai low voltage line loss rate is 8% hereinafter, effect is best to reach
4.72%, the contradiction that rural resident's power load constantly increases, distribution transformer load is overweight is not only alleviated, and effectively reduce platform
The Low-voltage Line Loss in area；
Power supply company, the county B, Henan Province plans the construction that 26 electrified villages were completed in 2016, and 5,280,000 yuan of budget fund,
After applying this method, preferred plan demonstration is carried out with the result that this method line loss analyzing calculates, is continuously improved,
3,830,000 yuan of actual investment, build 9 electrified villages again using savings, be truly realized done with limited fund it is more eventful
The purpose of feelings；
Power supply company, the county C, Henan Province so far, carries out low pressure theory wire loss using the line loss calculation method from 2016 beginning of the years
It calculates, and electric network reconstruction and platform Qu Zengrong is carried out according to calculated result, total 6,380,000 yuan of the investment of company has carried out low voltage electric network and changed
It makes and 8.73% was reduced to current 7.82% by 2015 with distribution transforming increase-volume, Shi Quan company low voltage line loss rate, entire 2016
When electricity sales amount completes 3.95 hundred million thousand ten thousand, when Low-voltage Line Loss loses electricity compared with last year reduction 5,260,000 thousand ten thousand, the comprehensive sale of electricity electricity in the whole county
Valence completes 680 yuan of calculating when pressing every megawatt, increase by 357.6 ten thousand yuan of the performance of enterprises；
Power supply company, the county D, Henan Province carries out low pressure theoretical line loss caluclation using the line loss calculation method, and ties according to calculating
Fruit carries out electric network reconstruction and platform Qu Zengrong, client's repair call that 95598 customer service system of company's good service phone is accepted
It significantly reduces, good service level significantly improves, and incoming call repair call sum reduces 1270 over the same period last year.
By above-mentioned case it is found that the method for the present invention is in the calculating of theoretical loss calculation, it is more in line with production reality, is had very
Strong practicability has obtained the consistent favorable comment of users, has improved the social image of power supply enterprise, is the excellent of power supply station, base
Good social base has been established in matter service and tariff recovery work.
Embodiment described above is only that preferred embodiments of the present invention will be described, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made, should fall within the scope of protection determined by the claims of the present invention.
Claims (7)
1. a kind of Theoretical Line Loss of Distribution Network rate calculation method, which comprises the steps of:
1) electric power information collection system is installed in power distribution network low-pressure side, for acquiring the total electricity consumption W of low-pressure side distribution transformerAlways
With separate unit distribution transformer electricity consumption Wi；
2) electric power information collection system connects electric network information database by peripheral port, for determining low-pressure side distribution transformer
Distribution and total number of units NAlways；
3) electric power information collection system will acquire information and be sent into processor, can collect accurate electricity by processor judgement
Distribution transformer, and calculate total number of units N of these distribution transformers1With collected electricity summation W1；
4) distribution transformer that accurate electricity will be acquired by processor carries out theoretical loss calculation calculating by coulometry；
5) the specified total capacity that the distribution transformer of accurate electricity cannot be acquired by the determination of electric network information database is S, head station
Number is (NAlways-N1), the capacity of separate unit distribution transformer is respectivelyThen these distribution transformers is total
Electricity consumption is (WAlways-W1) degree；
Pair 6) volumetric method is first passed through by the distribution transformer that processor will not be able to acquire accurate electricity and carries out proportion conversion, i.e.,
Above-mentioned distribution transformer carries out power energy allocation, and distribution principle is according to capacity accounting distribution principle, the use of above-mentioned distribution transformer
Electricity is respectivelyDegree,Degree ...Degree, result after conversion is led to again
It crosses coulometry and carries out theoretical loss calculation calculating.
2. a kind of Theoretical Line Loss of Distribution Network rate calculation method as described in claim 1, it is characterised in that: the electric network information data
Library includes power network GIS platform, and connects electric power saving distribution monitoring system by peripheral port, and electric network information data are configured to count
According to accumulation layer, general data storage service is provided, and measured general data exchange is provided, realizes information interconnection and information
Access.
3. a kind of Theoretical Line Loss of Distribution Network rate calculation method as claimed in claim 1 or 2, it is characterised in that: the peripheral port
Including man-machine interactive interface and network communication interface.
4. a kind of Theoretical Line Loss of Distribution Network rate calculation method as claimed in claim 3, it is characterised in that: the man-machine interactive interface
Query function can be provided, and electrical parameter can be inputted.
5. a kind of Theoretical Line Loss of Distribution Network rate calculation method as claimed in claim 3, it is characterised in that: the network communication interface
Including the multiple communication channels that can be connect with the electric network information database each unit, the multiple communication channels are using wireless
Transmission or the connection of limited optical fiber.
6. a kind of Theoretical Line Loss of Distribution Network rate calculation method as described in claim 1, it is characterised in that: the processor include with
The DSP unit of electric network information database connection, the DSP unit connection data comparator, data register and emulation drawing are soft
Part.
7. a kind of Theoretical Line Loss of Distribution Network rate calculation method as claimed in claim 6, it is characterised in that: the emulation graphics software
Including matlab simulated program.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109217303B (en) * | 2018-10-15 | 2021-11-02 | 国网重庆市电力公司长寿供电分公司 | 10kV distribution transformer area theoretical line loss calculation method based on secondary side real-time electricity reading quantity of distribution transformer |
| CN109494735B (en) * | 2018-12-25 | 2020-07-07 | 中国电力科学研究院有限公司 | Low-voltage distribution network line loss calculation model and method |
| CN110376464A (en) * | 2019-07-23 | 2019-10-25 | 国网河北省电力有限公司故城县供电分公司 | Interconnection type grid line loss monitoring system and method |
| CN111693795B (en) * | 2020-03-30 | 2023-07-18 | 贵州电网有限责任公司 | Intelligent ammeter-based transformer area line loss rate evaluation and abnormality judgment method |
| CN112260399B (en) * | 2020-09-18 | 2024-01-26 | 国网河北省电力有限公司行唐县供电分公司 | Medium-voltage line loss management and control method by using power distribution monitoring system |
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Address after: 450052 No. 85 South Songshan Road, Henan, Zhengzhou Patentee after: STATE GRID HENAN ELECTRIC POWER CORPORATION ELECTRIC POWER SCIENCE Research Institute Patentee after: Henan jiuyu enpai Power Technology Co., Ltd Address before: 450052 No. 85 South Songshan Road, Henan, Zhengzhou Patentee before: STATE GRID HENAN ELECTRIC POWER CORPORATION ELECTRIC POWER SCIENCE Research Institute Patentee before: Henan enpai High Tech Group Co., Ltd |