CN110674242A - Method for realizing power distribution network line loss data analysis and evaluation loss reduction system - Google Patents
Method for realizing power distribution network line loss data analysis and evaluation loss reduction system Download PDFInfo
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- 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
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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
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- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The invention discloses a method for realizing line loss data analysis and evaluation loss reduction system of a power distribution network in the technical field of power distribution networks, which comprises the steps of installing a power consumption data meter to a power consumption terminal of the power distribution network and generating a power consumption data distribution map; automatically and regularly acquiring line loss basic data by a data meter, storing the line loss basic data in a sub-channel manner, calculating to obtain a branch line loss rate, and recording and generating a line level continuous variation graph; comparing the obtained branch line loss rate and the obtained level line loss rate with theoretical line loss and rated line loss input by a data center to generate a total comparison graph, quickly positioning difference points for unqualified lines, and performing red point early warning prompt on a distribution map; and analyzing the change rule of the line loss rate according to the obtained branch line loss rate and the hierarchy line loss rate, and estimating the line loss rate in advance by analyzing possible problems of the line. The invention displays line loss through intuitive graphic multi-level and multi-level analysis, provides automatic positioning analysis and alarm functions, and has high system automation degree and high use efficiency.
Description
Technical Field
The invention relates to the technical field of power distribution networks, in particular to a method for realizing analysis and evaluation of line loss data of a power distribution network and a loss reduction system.
Background
The line loss rate is an important evaluation index for evaluating the structure, operation and management level of a power grid, and when the line loss rate of a certain local part in a power system exceeds the limit, a worker needs to manually call out related files and historical electric quantity data, summarize the data and analyze the data. The line loss management system in the prior art does not provide an intuitive and graphical display mode, does not provide an analysis and alarm function for automatic positioning, has low system automation degree, complex operation and low use efficiency, so that the line loss has an unobvious monitoring and guiding effect on a power grid, power line loss abnormity cannot be timely found, effective measures cannot be timely taken to reduce loss, electric energy waste can be caused, and the safety and reliability of power grid operation can be threatened.
Based on the above, the invention designs a method for realizing the analysis of the line loss data of the power distribution network and the evaluation of the loss reduction system, so as to solve the problems.
Disclosure of Invention
The invention aims to provide a method for realizing the analysis and evaluation of power distribution network line loss data and a loss reduction system, and aims to solve the problems that no visual and graphical display mode, no automatic positioning analysis and alarm function, low system automation degree, complex operation and low use efficiency are provided in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for realizing the analysis and evaluation of the line loss data of a power distribution network and a loss reduction system comprises the following steps:
s1: installing a power consumption data meter to a power consumption terminal of the power distribution network, numbering the power consumption data meter and matching the numbered power consumption data meter with the geographical position to generate a power consumption data distribution map;
s2: the method comprises the steps that line loss basic data are automatically obtained in a timing mode through a data meter, and the data are transmitted to a data center to be stored;
s3: storing and calculating each line loss basis channel in the power distribution network obtained at regular time to obtain a branch line loss rate, and recording and generating a line level continuous variation graph;
s4: calculating the sum data of all lines in the power distribution network of the same level to obtain the level line loss rate, and recording and generating a level continuous change diagram;
s5: comparing the obtained branch line loss rate and the obtained level line loss rate with theoretical line loss and rated line loss input by a data center to generate a total comparison graph, quickly positioning difference points for unqualified lines, and performing red point early warning prompt on a distribution map;
s6: analyzing the change rule of the line loss rate according to the obtained branch line loss rate and the level line loss rate, and analyzing possible problems of the line;
s7: and (4) estimating the line loss rate in advance according to the line loss rate change rule obtained by analysis, and adjusting according to the obtained line loss rate and the prediction analysis result to realize loss reduction.
Preferably, in S1, the electricity consumption data meter numbering rule is a concentrator number of a region where the electricity consumption data meter is located first, a number is generated by using the concentrator number as a prefix and the data meter number as a suffix, and the number is marked as a code on a map of the location of the electricity consumption data meter, so as to generate the electronic electricity consumption data distribution map.
Preferably, in S1, the power consumption terminals include a user terminal and a transformer terminal.
Preferably, in S2, the electricity consumption meter transmits the electricity consumption meter to the concentrator through a power line carrier mode after being subjected to spread spectrum noise reduction processing, and the concentrator transmits data to the data center through a GPRS mode.
Preferably, in S2, the time node for the data meter to automatically and periodically obtain the line loss basic data is set by the data center in a customized manner.
Preferably, in S3, one line in the power distribution network is matched with one channel, the branch line loss is calculated as a statistical line loss, and the line level continuous variation graph is a line graph.
Preferably, in S4, the hierarchical line loss is a statistical line loss, and the hierarchical continuous variation graph is a line graph.
Preferably, in S5, the line loss exceeding the theoretical line loss is marked as a failed line;
if the level line loss rate is unqualified, positioning the geographical position of the data meter of the level corresponding to the distribution map as a difference point and displaying red point early warning;
if the branch line loss rate is not qualified, positioning the geographical position where the data meter corresponding to the distribution map where the branch line is located is a difference point, and displaying red point early warning;
and independently calling line loss data for the unqualified line through a data center to recalculate and rapidly position difference points.
Preferably, in S6, the general comparison graph is a line graph;
analyzing the problem of time nodes or geographic positions of which the line loss rate is close to or exceeds the theoretical line loss according to the line level continuous change diagram, the level continuous change diagram and the overall comparison diagram, marking the problem as dangerous line loss, and analyzing and judging that the technical line loss is abnormal or the management line loss is abnormal;
the line loss change rule is the change rule of all branch line loss rate and level line loss rate data obtained in 24 hours.
Preferably, in S7, if the analysis result is that the management line loss is abnormal, it is checked whether the data metering device is accurate, and whether a violation or electricity theft behavior exists;
and if the theoretical line loss is abnormal, adjusting the three-phase load, reactive compensation, equipment adjustment or line layout adjustment.
Compared with the prior art, the invention has the beneficial effects that:
the invention collects data through the data meter, reads and transmits data by combining a power line carrier with a GPRS transmission mode, greatly facilitates the extraction of data, does not need to manually copy the data, can directly extract historical data or re-read current data through the data center, displays the branch line loss into multiple layers through a line graph by means of visual branch line loss and level line loss line graphs, forms multi-level line loss display by means of the level line loss and the branch line loss, provides the functions of automatic positioning analysis and alarm by means of hierarchical installation of the data meter and positioning matching with an electronic map, predicts the line loss in advance by obtaining the line loss rule, facilitates the corresponding adjustment, is beneficial to loss reduction, and has high system automation degree, simple operation and high use efficiency.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a power distribution network according to the present invention;
FIG. 2 is a schematic diagram of a data hierarchy according to the present invention;
fig. 3 is a broken line schematic diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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.
Referring to fig. 1-3, the present invention provides a technical solution:
a method for realizing the analysis and evaluation of the line loss data of a power distribution network and a loss reduction system comprises the following steps:
s1: installing a power consumption data meter to a power consumption terminal of the power distribution network, numbering the power consumption data meter and matching the numbered power consumption data meter with the geographical position to generate a power consumption data distribution map;
s2: the method comprises the steps that line loss basic data are automatically obtained in a timing mode through a data meter, and the data are transmitted to a data center to be stored;
s3: storing and calculating each line loss basis channel in the power distribution network obtained at regular time to obtain a branch line loss rate, and recording and generating a line level continuous variation graph;
s4: calculating the sum data of all lines in the power distribution network of the same level to obtain the level line loss rate, and recording and generating a level continuous change diagram;
s5: comparing the obtained branch line loss rate and the obtained level line loss rate with theoretical line loss and rated line loss input by a data center to generate a total comparison graph, quickly positioning difference points for unqualified lines, and performing red point early warning prompt on a distribution map;
s6: analyzing the change rule of the line loss rate according to the obtained branch line loss rate and the level line loss rate, and analyzing possible problems of the line;
s7: and (4) estimating the line loss rate in advance according to the line loss rate change rule obtained by analysis, and adjusting according to the obtained line loss rate and the prediction analysis result to realize loss reduction.
In S1, the power consumption terminal includes a user terminal and a transformer terminal, the numbering rule of the power consumption data meter is the number of the concentrator in the area where the power consumption data meter is located first, the number of the concentrator is used as a prefix, the number of the data meter is used as a suffix to generate a number, and the number is marked on a map of the location where the data meter is located as a code to generate an electronic power consumption data distribution map.
In S2, the electricity consumption meter transmits the electricity consumption meter to the concentrator after being subjected to spread spectrum noise reduction treatment in a power line carrier mode, and the concentrator transmits data to the data center in a GPRS mode. And the time node for automatically and regularly acquiring the line loss basic data by the data meter is set by the data center in a user-defined mode.
In S3, one line in the distribution network is matched with one channel, the branch line loss obtained by calculation is a statistical line loss, and the line level continuous variation graph is a line graph. In S4, the hierarchical line loss is a statistical line loss, and the hierarchical continuous variation graph is a line graph.
In S5, calibrating the comparison exceeding the theoretical line loss as an unqualified line; if the level line loss rate is unqualified, positioning the geographical position of the data meter of the level corresponding to the distribution map as a difference point and displaying red point early warning; if the branch line loss rate is not qualified, positioning the geographical position where the data meter corresponding to the distribution map where the branch line is located is a difference point, and displaying red point early warning; and independently calling line loss data for the unqualified line through a data center to recalculate and rapidly position difference points.
In S6, the general comparison graph is a line graph; analyzing the problem of time nodes or geographic positions of which the line loss rate is close to or exceeds the theoretical line loss according to the line level continuous change diagram, the level continuous change diagram and the overall comparison diagram, marking the problem as dangerous line loss, and analyzing and judging that the technical line loss is abnormal or the management line loss is abnormal; the line loss change rule is the change rule of all branch line loss rate and level line loss rate data obtained in 24 hours.
In S7, if the analysis result is that the management line loss is abnormal, whether the data metering equipment is accurate or not and whether the violation or the electricity stealing behavior exists or not are checked;
and if the theoretical line loss is abnormal, adjusting the three-phase load, reactive compensation, equipment adjustment or line layout adjustment.
One specific application of this embodiment is: the invention generates a power consumption data distribution map by installing a power consumption data meter to a user terminal of a power distribution network, installing a data meter and a concentrator at a transformer terminal, numbering the power consumption data meter and matching the power consumption data meter with the geographical position, wherein the numbering rule of the power consumption data meter is that the concentrator in the area is firstly numbered according to the area, the concentrator is called as a number for short if facing the sun, the prefix is the number for facing, the letter number of the middle-level data meter is a middle number, the suffix of the user data meter is a number, the number is generated, and the number is marked on the map of the position as a code, wherein the numbering example of the concentrator is J facing 01, the concentrator which represents the subordinate 01 in the facing sun area, and the numbering example of the power consumption data meter is as follows: and S heading 0101 represents a 01 electricity consumption data meter under the concentrator with 01 suffix in the sunny region, and the geographic position where the number electricity consumption data meter and the concentrator are installed is matched with an electronic map to generate an electronic electricity consumption data distribution map.
Setting data reading time nodes of a data meter in a data center system, inputting a theoretical line loss data curve matched with the data reading time nodes, transmitting line loss data to a concentrator after spread spectrum and noise reduction treatment in a power line carrier mode, transmitting the data to the data center by the concentrator in a GPRS mode, quickly and simply acquiring and reading the data, not erecting a line specially, quickly and accurately in the GPRS transmission mode, meeting the requirement of large-amount data transmission, storing line loss basic data under the same power distribution network line to the data center according to a channel, respectively calculating a line loss rate and a level line loss rate according to the line loss basic data obtained at regular time, wherein the line loss of a branch line is the statistical line loss of the branch line of the power distribution network, calculating the first-level line loss by taking the data read by a highest-level data meter as a reference, and calculating the second-level line loss by taking the data read by a middle-level data meter as a reference, the line loss control method comprises the steps of calculating three-level line loss by taking data read by a bottom layer data meter as a reference, forming a line-level line loss line graph through line loss changes of the first-level line loss, the second-level line loss and the third-level line loss, analyzing the line loss changes of the first-level line loss, the second-level line loss and the third-level line loss to obtain the level with the maximum line loss, judging the section where the line loss is abnormal in a large range, judging whether the power consumption of a user is abnormal or abnormal power distribution equipment, classifying the abnormal power consumption of the user into management line loss, and classifying the abnormal power distribution equipment into technical line loss. The hierarchical line loss is the line loss of the second-level line and the line loss of the third-level line between different lines, a hierarchical broken line graph is formed by comparing the line loss of the second-level line and the line loss of the third-level line between different lines, the line loss difference between sample levels can be compared, and the abnormal section of the hierarchical line loss is judged, so that the line loss abnormal point corresponding to a specific bus line is found.
According to the obtained line level line loss line graph and the hierarchy comparison line graph, arranging the line loss exceeding the theoretical line loss to be the maximum as the first line loss line, arranging the line loss exceeding the theoretical line loss in descending order according to the difference value, calibrating the line loss exceeding the theoretical line loss to be an unqualified line, positioning the geographical position of a data meter corresponding to the hierarchy corresponding to the distribution map at the hierarchy to be a difference point and displaying red point early warning when the hierarchy line loss rate is unqualified, positioning the geographical position of the data meter corresponding to the branch corresponding to the distribution map at the hierarchy to be a difference point and displaying red point early warning, for the unqualified line, separately taking the hierarchy or line level line loss data of the unqualified line through a data center to recalculate, if the hierarchy is unqualified, namely one or more hierarchy among the hierarchy is unqualified line loss line graph, firstly taking the next-level line loss data and the previous-level line loss data of the line loss of, and after the line loss data in the lower level of the section is positioned to a section, calling the data, calculating, sequentially checking and rapidly positioning the difference points, displaying red early warning on a power utilization data distribution map of the positioned difference points, taking corresponding measures, judging that the line loss is abnormal if the positioned difference points are users, analyzing the reasons caused by violation of regulations, electricity stealing or damage of a data meter, checking the reasons to find out the abnormal reason, and reducing the loss. And if the position is the transformer or other distribution equipment, judging the technical line loss, and adjusting the three-phase load, reactive compensation, equipment adjustment or line layout adjustment to reduce the loss.
And analyzing the problem of time nodes or geographic positions of which the line loss rate is close to or exceeds the theoretical line loss according to the line level continuous change diagram, the level continuous change diagram and the overall comparison diagram, marking the problem as dangerous line loss, analyzing and judging that the technical line loss is abnormal or the management line loss is abnormal, correspondingly adjusting and preventing in advance. And respectively obtaining branch line loss change rules and hierarchy line loss change rules through the data change rules of all branch line loss rates and hierarchy line loss rates obtained in 24 hours, pre-estimating the line loss rate by one key according to the branch line loss change rules and the hierarchy line loss change rules obtained through analysis, and adjusting a prediction analysis result after comparing the obtained estimated line loss rate with an ideal line loss rate to realize loss reduction.
The invention collects data through the data meter, reads and transmits data by combining a power line carrier with a GPRS transmission mode, greatly facilitates the extraction of data, does not need to manually copy the data, can directly extract historical data or re-read current data through the data center, displays the branch line loss into multiple layers through a line graph by means of visual branch line loss and level line loss line graphs, forms multi-level line loss display by means of the level line loss and the branch line loss, provides the functions of automatic positioning analysis and alarm by means of hierarchical installation of the data meter and positioning matching with an electronic map, predicts the line loss in advance by obtaining the line loss rule, facilitates the corresponding adjustment, is beneficial to loss reduction, and has high system automation degree, simple operation and high use efficiency.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A method for realizing the analysis and evaluation of the line loss data of a power distribution network and a loss reduction system comprises the following steps:
s1: installing a power consumption data meter to a power consumption terminal of the power distribution network, numbering the power consumption data meter and matching the numbered power consumption data meter with the geographical position to generate a power consumption data distribution map;
s2: the method comprises the steps that line loss basic data are automatically obtained in a timing mode through a data meter, and the data are transmitted to a data center to be stored;
s3: storing each line loss basic data in the power distribution network obtained at regular time in a channel mode, calculating to obtain a branch line loss rate, and recording and generating a line level continuous variation graph;
s4: calculating the sum data of all lines in the power distribution network of the same level to obtain the level line loss rate, and recording and generating a level continuous change diagram;
s5: comparing the obtained branch line loss rate and the obtained level line loss rate with theoretical line loss and rated line loss input by a data center to generate a total comparison graph, quickly positioning difference points for unqualified lines, and performing red point early warning prompt on a distribution map;
s6: analyzing the change rule of the line loss rate according to the obtained branch line loss rate and the level line loss rate, and analyzing possible problems of the line;
s7: and (4) estimating the line loss rate in advance according to the line loss rate change rule obtained by analysis, and adjusting according to the obtained line loss rate prediction analysis result to realize loss reduction.
2. The method for analyzing and evaluating the line loss data of the power distribution network according to claim 1, wherein the method comprises the following steps: in S1, the electricity consumption data meter numbering rule is the concentrator number of the area where the electricity consumption data meter is located first, the concentrator number is used as a prefix, the data meter number is used as a suffix to generate a number, and the number is marked on a map of the location where the electricity consumption data meter is located as a code to generate an electronic electricity consumption data distribution map.
3. The method for analyzing and evaluating the line loss data of the power distribution network according to claim 1, wherein the method comprises the following steps: in S1, the power consumption terminal includes a user terminal and a transformer terminal.
4. The method for analyzing and evaluating the line loss data of the power distribution network according to claim 1, wherein the method comprises the following steps: in S2, the electricity consumption meter transmits the electricity consumption meter to the concentrator after being subjected to spread spectrum noise reduction treatment in a power line carrier mode, and the concentrator transmits data to the data center in a GPRS mode.
5. The method for analyzing and evaluating the line loss data of the power distribution network according to claim 1, wherein the method comprises the following steps: in S2, the time node for the data meter to automatically and regularly obtain the line loss basic data is set by the data center in a user-defined manner.
6. The method for analyzing and evaluating the line loss data of the power distribution network according to claim 1, wherein the method comprises the following steps: in S3, one line in the distribution network is matched with one channel, the branch line loss obtained by calculation is a statistical line loss, and the line level continuous variation graph is a line graph.
7. The method for analyzing and evaluating the line loss data of the power distribution network according to claim 1, wherein the method comprises the following steps: in S4, the hierarchical line loss is a statistical line loss, and the hierarchical continuous variation graph is a line graph.
8. The method for analyzing and evaluating the line loss data of the power distribution network according to claim 1, wherein the method comprises the following steps: in S5, calibrating the comparison exceeding the theoretical line loss as an unqualified line;
if the level line loss rate is unqualified, positioning the geographical position of the data meter of the level corresponding to the distribution map as a difference point and displaying red point early warning;
if the branch line loss rate is not qualified, positioning the geographical position where the data meter corresponding to the distribution map where the branch line is located is a difference point, and displaying red point early warning;
and independently calling line loss data for the unqualified line through a data center to recalculate and rapidly position difference points.
9. The method for analyzing and evaluating the line loss data of the power distribution network according to claim 1, wherein the method comprises the following steps: in S6, the general comparison graph is a line graph;
analyzing the problem of time nodes or geographic positions of which the line loss rate is close to or exceeds the theoretical line loss according to the line level continuous change diagram, the level continuous change diagram and the overall comparison diagram, marking the problem as dangerous line loss, and analyzing and judging that the technical line loss is abnormal or the management line loss is abnormal;
the line loss change rule is the change rule of all branch line loss rate and level line loss rate data obtained in 24 hours.
10. The method for analyzing and evaluating the line loss data of the power distribution network according to claim 1, wherein the method comprises the following steps: in S7, if the analysis result is that the management line loss is abnormal, whether the data metering equipment is accurate or not and whether the violation or the electricity stealing behavior exists or not are checked;
and if the theoretical line loss is abnormal, adjusting the three-phase load, reactive compensation, equipment adjustment or line layout adjustment.
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