CN111768107A - Method for determining reasonable line loss rate interval of public transformer area - Google Patents
Method for determining reasonable line loss rate interval of public transformer area Download PDFInfo
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- CN111768107A CN111768107A CN202010620311.3A CN202010620311A CN111768107A CN 111768107 A CN111768107 A CN 111768107A CN 202010620311 A CN202010620311 A CN 202010620311A CN 111768107 A CN111768107 A CN 111768107A
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Abstract
The invention relates to the technical field of power distribution network power utilization management, in particular to a method for determining a reasonable line loss rate interval of a public transformer area. The method is simple and easy to operate and manage, and solves the problem of determining the standard interval of the line loss rate under the conditions of different public transformer areas, different load characteristics and different areas.
Description
Technical Field
The invention relates to the technical field of power distribution network power utilization management, in particular to a method for determining a reasonable interval of line loss rate of a public transformer area.
Background
The line loss rate of the public transformer area is related to load characteristics, a network structure, a lead model, length and the like, but the files of the parameters are not maintained perfectly and change quickly, and in addition, the number of the public transformer areas is large, for example, about 20-40 ten thousand are saved, so that the traditional theoretical line loss calculation is difficult to develop. At present, the line loss rate of a public transformer area checks 0-10% of the interval, and is relatively wide. Parameters such as the model and the length of a low-voltage conductor line in a public transformer area are not maintained completely and accurately, and files are seriously lost, so that theoretical line loss calculation can be only carried out for a typical area and cannot be widely applied, and whether the line loss rate of the area is measured reasonably lacks a standard. Based on the method, a relatively simple method is provided, physical parameters such as a network structure, a lead model and a length do not need to be acquired, only the capacity, the line loss rate, the number of households and the electricity sales amount of each household of the public transformer area need to be utilized, a line loss reference table of the public transformer area is obtained through a big data method, and then a line loss rate interval is determined according to the standard difference of the electricity sales amount and the average electricity sales amount of the households of the public transformer area.
Disclosure of Invention
The invention aims to provide a method for determining a reasonable interval of the line loss rate of a public transformation area, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: selecting the average electricity selling amount and standard deviation of electricity selling amount of each report period of a large number of public transformer areas as a calculation basis; the average electricity selling quantity of the users in the public transformer area is divided into electricity selling quantity and the number of the users in the public transformer area; the standard deviation of the electricity selling quantity is sqrt (((x1-x) 2+ (x2-x) 2+. the.. the. (xn-x) 2)/n), wherein x1, x2, x3, … … and xn represent the electricity selling quantity of each household in the transformer area, x represents the average electricity selling quantity of the household in the transformer area, and n represents the number of the household in the transformer area.
As a further scheme of the invention: the electricity sales amount is summed up to the electricity sales amount of all the users in the area.
As a still further scheme of the invention: the method for determining the reasonable interval of the line loss rate of the public transformer area comprises the following steps:
s1, according to the capacity of the public transformer area, clustering the average electricity consumption and the line loss rate of all the users in the public transformer area in a plurality of continuous report periods under the same capacity to obtain the line loss rate center point under the average electricity consumption of each type of users; taking 80% of the common transformation area upwards and downwards as the interval of the line loss rate on the basis of the center point, and determining the range of the line loss rate;
s2: based on the result calculated in the step S1, clustering the common change station areas with different average household electricity sales amounts and the same line loss rate intervals according to the standard deviation of electricity sales amounts to obtain the line loss rate center point under the standard deviation of the average household electricity sales amounts and electricity sales amounts of each type; taking 80% of the common transformation area upwards and downwards as the interval of the line loss rate on the basis of the center point;
s3: and obtaining a standard interval table of the line loss rate in the common transformer area according to the steps S1 and S2.
As a still further scheme of the invention: the application mode of the method for determining the reasonable line loss rate interval of the public transformer area is as follows: and calculating the average household electricity sales amount and the standard deviation of the electricity sales amount of the transformer area to be determined, inquiring the line loss rate standard interval table obtained in the step of S3 according to the calculation result, judging whether the line loss rate is in the standard interval, judging that the line loss rate is reasonable in the standard interval and is not in the standard interval, and judging that the line loss rate is abnormal.
Compared with the prior art, the invention has the beneficial effects that: calculating a line loss rate standard interval result table in the public transformer area by selecting continuous multiple report period data in the public transformer area, and in subsequent power distribution and power utilization management, calculating the average household power sale amount and the standard deviation of the power sale amount in each report period according to the data in each report period to obtain the line loss rate interval of the public transformer area in the current report period by referring to the result table; physical parameters such as a network structure, a wire model and a length in a public transformer area do not need to be acquired, the line loss rate interval of the public transformer area can be accurately obtained only by a big data method by only utilizing the capacity, the line loss rate, the number of households and the electricity sold by each household of the public transformer area, the problem of determining the line loss rate standard under the conditions of different public transformer areas, different load characteristics and different areas is solved, and the method is simple in determining the line loss rate interval of the public transformer area and convenient to apply.
Detailed Description
The technical solutions of the present invention will be described clearly and completely in conjunction with the embodiments of the present invention, and it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the invention, the average electricity sold by the users in each report period of a large number of public transformer areas and the standard deviation of the electricity sold are selected as calculation bases; the electricity sold by each user in the public transformer area is divided into electricity sold and the number of users in the public transformer area; the standard deviation of the electricity selling quantity is sqrt (((x1-x) 2+ (x2-x) 2+. the.. the. (xn-x) 2)/n), wherein x1, x2, x3, … … and xn represent the electricity selling quantity of each household in the transformer area, x represents the average electricity selling quantity of the household in the transformer area, and n represents the number of the household in the transformer area. Wherein, the sum of the electricity sales is the electricity sales of all users in the district.
The method for determining the reasonable interval of the line loss rate of the public transformer area comprises the following steps:
s1, according to the capacity of the public transformer area, clustering the average electricity consumption and the line loss rate of all the users in the public transformer area in a plurality of continuous report periods under the same capacity to obtain the line loss rate center point under the average electricity consumption of each type of users; taking 80% of the common transformation area upwards and downwards as the interval of the line loss rate on the basis of the center point, and determining the range of the line loss rate;
s2: based on the result calculated in the step S1, clustering the common change station areas with different average household electricity sales amounts and the same line loss rate intervals according to the standard deviation of electricity sales amounts to obtain the line loss rate center point under the standard deviation of the average household electricity sales amounts and electricity sales amounts of each type; taking 80% of the common transformation area upwards and downwards as the interval of the line loss rate on the basis of the center point;
the results calculated with the capacity of 400kVA and the reporting period of the last three phases as data are shown in the following table:
the method for determining the reasonable line loss rate interval of the transformer area in the subsequent power distribution management has the application mode that: and calculating the average household electricity sales amount and the standard deviation of the electricity sales amount of the transformer area required to be determined, inquiring the standard interval table of the line loss rate obtained in the step S3 according to the calculation result, judging whether the line loss rate is in the standard interval, judging that the line loss rate is reasonable in the standard interval and is not in the standard interval, and judging that the line loss rate is abnormal.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (4)
1. A method for determining a reasonable interval of line loss rate of a public transformer area is characterized in that the average electricity sales amount and standard deviation of electricity sales amount of a large number of users in each report period of the public transformer area are selected as calculation bases; the electricity sold by each user in the public transformer area is divided into electricity sold and electricity sold by each user in the public transformer area; the standard deviation of the electricity selling quantity is sqrt (((x1-x) 2+ (x2-x) 2+. the.. the. (xn-x) 2)/n), wherein x1, x2, x3, … … and xn represent the electricity selling quantity of each household in the transformer area, x represents the electricity selling quantity of each household in the transformer area, and n represents the number of the household in the transformer area.
2. The method according to claim 1, wherein the electricity sales amount is a total of electricity sales amounts of all users in the area.
3. The method for determining the reasonable interval of the line loss rate of the transformer area according to claim 1, wherein the method for determining the reasonable interval of the line loss rate of the transformer area comprises:
s1, according to the capacity of the public transformer area, clustering the average electricity sales rate and the line loss rate of all the users in the public transformer area in a plurality of continuous report periods under the same capacity to obtain the line loss rate center point under the average electricity sales rate of each type of users; taking 80% of the common transformation area upwards and downwards as the interval of the line loss rate on the basis of the center point, and determining the range of the line loss rate;
s2: based on the result calculated in the step S1, clustering the common change areas with different electricity sales of the users and the same line loss rate intervals according to the standard deviation of electricity sales to obtain the line loss rate center point under the average electricity sales and the standard deviation of electricity sales of each type of users; taking 80% of the common transformation area upwards and downwards as the interval of the line loss rate on the basis of the center point;
s3: and obtaining a standard interval table of the line loss rate in the common transformer area according to the steps S1 and S2.
4. The method for determining the reasonable interval of the line loss rate of the transformer area according to claim 3, wherein the method for determining the reasonable interval of the line loss rate of the transformer area is applied in a manner that: and calculating the average household electricity sales amount and the standard deviation of the electricity sales amount of the transformer area required to be determined, inquiring the line loss rate standard interval table obtained in the step of S3 according to the calculation result, judging whether the line loss rate is in the standard interval, judging that the line loss rate is reasonable in the standard interval and is not in the standard interval, and judging that the line loss rate is abnormal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010620311.3A CN111768107A (en) | 2020-07-01 | 2020-07-01 | Method for determining reasonable line loss rate interval of public transformer area |
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| CN202010620311.3A CN111768107A (en) | 2020-07-01 | 2020-07-01 | Method for determining reasonable line loss rate interval of public transformer area |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112016856A (en) * | 2020-10-23 | 2020-12-01 | 南方电网数字电网研究院有限公司 | Comprehensive magnification abnormity identification method and device, metering system and storage medium |
| CN113129168A (en) * | 2021-05-17 | 2021-07-16 | 国网河北省电力有限公司电力科学研究院 | Line loss determination method and device for power distribution area and terminal equipment |
-
2020
- 2020-07-01 CN CN202010620311.3A patent/CN111768107A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112016856A (en) * | 2020-10-23 | 2020-12-01 | 南方电网数字电网研究院有限公司 | Comprehensive magnification abnormity identification method and device, metering system and storage medium |
| CN113129168A (en) * | 2021-05-17 | 2021-07-16 | 国网河北省电力有限公司电力科学研究院 | Line loss determination method and device for power distribution area and terminal equipment |
| CN113129168B (en) * | 2021-05-17 | 2022-03-25 | 国网河北省电力有限公司电力科学研究院 | Line loss determination method and device for power distribution area and terminal equipment |
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Application publication date: 20201013 |