CN-122017457-A - Method, system, equipment, medium and product for positioning management line loss of distribution line automation equipment

CN122017457ACN 122017457 ACN122017457 ACN 122017457ACN-122017457-A

Abstract

The invention relates to the technical field of power systems, and discloses a method, a system, equipment, a medium and a product for positioning management line loss of distribution line automation equipment, wherein the method judges whether the line has the abnormality of the management line loss or not by judging whether the ratio of the difference value of the statistical loss electric quantity and the technical loss electric quantity of each line in the current statistical period to the total power supply quantity of the line exceeds a preset first ratio threshold value or not, and determines the line as the abnormal line of the management line loss, the investigation range of the management line loss is shortened to be in the automatic segmentation, the loss data of each automatic segmentation on the management line loss abnormal line is utilized to judge whether the line loss state of the automatic segmentation is abnormal, and the automatic segmentation with abnormal line loss state is screened to be the management line loss abnormal section, so that the accuracy and efficiency of the management line loss positioning are improved, and the abnormal accurate identification from the line level to the segmentation level is realized.

Inventors

ZHU JUN
WAN MIN
Yan Siyue
ZHOU LONGZHOU
ZENG JUNRAN
LIU ZHILU

Assignees

广东电网有限责任公司佛山供电局

Dates

Publication Date: 20260512
Application Date: 20260213

Claims (10)

1. A method for locating a management line loss of distribution line automation equipment, comprising: For each section of line in a distribution line, acquiring the statistical loss electric quantity and the technical loss electric quantity of the line in the current statistical period; Acquiring a first difference value of the statistical power loss quantity and the technical power loss quantity of the circuit, and judging whether the proportion of the first difference value to the total power supply quantity of the circuit exceeds a preset first proportion threshold value or not; determining the line as an abnormal line for managing line loss under the condition that the proportion of the first difference value to the total power supply quantity of the line exceeds the preset first proportion threshold value; acquiring loss data of each movable segment on the management line loss abnormal line, judging whether the line loss state of each automatic segment is abnormal according to the loss data, and screening the automatic segment with abnormal line loss state as a management line loss abnormal section.
2. The method for managing line loss positioning of a distribution line automation device of claim 1, further comprising: And obtaining the net positive active power of the line at the substation gateway in the current statistical period and the sum of the net positive active power of all the distribution transformers, and determining the statistical loss power of the line in the current statistical period according to the difference value of the sum of the net positive active power of the substation gateway and the net positive active power of all the distribution transformers.
3. The method for managing line loss positioning of a distribution line automation device of claim 1, further comprising: the method comprises the steps of obtaining active loss of each wire segment on a circuit, accumulating the active loss of each wire segment according to sampling time to obtain total wire loss of the circuit at each time, and performing time integration on the total wire loss of the circuit at each time in a current statistical period to obtain wire technical loss electric quantity of the circuit in the current statistical period; the method comprises the steps of obtaining the load rate of each sampling moment of each public distribution transformer corresponding to a line, calculating the active loss of each public distribution transformer at each moment by combining the typical no-load loss and full-load loss parameters in the equipment account, accumulating and integrating the active loss of all public distribution transformers in the current statistical period, and obtaining the technical loss electric quantity of the public distribution transformer of the line in the current statistical period; and determining the technical loss electric quantity of the circuit in the current statistical period according to the sum of the technical loss electric quantity of the wire and the technical loss electric quantity of the public distribution transformer.
4. The method for locating the managed line loss of the distribution line automation device according to claim 1, wherein the steps of obtaining loss data of each of the motorized segments on the managed line loss anomaly line, determining whether the line loss state of each of the motorized segments is anomalous according to the loss data, and screening the automated segments with abnormal line loss states as the managed line loss anomaly segments include: Acquiring loss data of each motorized segment on the management line loss abnormal line, wherein the loss data comprises statistical loss electric quantity and technical loss electric quantity of each automated segment in a current statistical period; For each automation segment, obtaining a second difference value of the statistical power consumption and the technical power consumption of the automation segment, and judging whether the proportion of the second difference value to the active power quantity flowing in the automation segment is larger than a preset second proportion threshold value; If the proportion of the second difference value to the active power quantity flowing in the automatic segment is larger than the preset second proportion threshold value, judging that the line loss state of the automatic segment is abnormal, and determining the automatic segment with the abnormal line loss state as the management line loss abnormal section.
5. The method for managing line loss positioning of a distribution line automation device of claim 4, further comprising: acquiring the active power of each sampling time of the automatic section in the current statistical period, and integrating the active power of each sampling time in the current statistical period to obtain the active electric quantity flowing in by the automatic section; And obtaining the sum of all the distribution net forward active power of the automatic segment in the current statistical period, and calculating the difference value of the sum of the inflow active power and all the distribution net forward active power to obtain the statistical loss power of the automatic segment.
6. The method for managing line loss positioning of a distribution line automation device of claim 4, further comprising: And acquiring the active power consumption of each wire segment of the automatic segment in the current statistical period, and adding the active power consumption of each wire segment to obtain the technical power consumption of the automatic segment in the current statistical period.
7. A managed line loss positioning system for distribution line automation equipment, comprising: The circuit loss acquisition module is used for acquiring the statistical loss electric quantity and the technical loss electric quantity of each section of circuit in the distribution circuit in the current statistical period; the judging module is used for acquiring a first difference value of the statistical power loss quantity and the technical power loss quantity of the circuit and judging whether the proportion of the first difference value to the total power supply quantity of the circuit exceeds a preset first proportion threshold value or not; the circuit abnormality identification module is used for determining the circuit as a management line loss abnormal circuit under the condition that the proportion of the first difference value to the total power supply quantity of the circuit exceeds the preset first proportion threshold value; The line loss section positioning module is used for acquiring loss data of each motorized section on the line loss management abnormal line, judging whether the line loss state of each automatic section is abnormal according to the loss data, and screening the automatic sections with abnormal line loss states as management line loss abnormal sections.
8. An electronic device comprising a memory and a processor, wherein the memory stores a computer program that, when executed by the processor, causes the processor to perform the steps of the method for managing line loss positioning of a distribution line automation device according to any one of claims 1-6.
9. A computer readable storage medium having stored thereon a computer program, wherein the computer program when executed performs the steps of the method of managing line loss localization of a distribution line automation device as defined in any one of claims 1 to 6.
10. A computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, wherein the program instructions, when executed by a computer, cause the computer to perform the steps of the method of managing line loss positioning for a distribution line automation device according to any of claims 1-6.

Description

Method, system, equipment, medium and product for positioning management line loss of distribution line automation equipment Technical Field The invention relates to the technical field of power systems, in particular to a method, a system, equipment, media and products for positioning management line loss of distribution line automation equipment. Background The line loss rate is a key economic index for measuring the planning, operation and management level of the power grid, and mainly comprises technical line loss and management line loss. Technical line loss is electric energy loss caused by inherent physical characteristics (such as resistance) of equipment such as a power transmission line, a transformer and the like, and can be calculated by theory. The management line loss is mainly caused by non-technical factors such as metering device errors, data acquisition failures, electricity stealing and the like. Currently, with the improvement of the distribution automation level, a large number of automation segments (such as pole-mounted circuit breakers) are deployed on a distribution network, and the switches are generally integrated with intelligent terminals and have the functions of collecting and uploading operation data such as voltage and current, so that a data base is provided for realizing more refined line loss analysis. Meanwhile, an integrated data platform is generally established by an electric company, so that data of a plurality of systems such as scheduling, marketing, electricity consumption information acquisition and the like can be accessed, and the possibility is provided for big data analysis. However, in actual line loss management, at present, statistical analysis is often performed by using the whole distribution line or the transformer area as the minimum unit. When the overall line loss rate of a certain area or line is found to be abnormal, the operation and maintenance personnel can not easily and quickly judge whether the abnormal source occurs at a certain section of the main line or a certain branch line or at the user side. This results in huge investigation scope, often needs the manual work to carry out "carpet" inspection, and not only consuming time and effort (traditional investigation perhaps takes several hours), and very easily miss the problem point, especially in the complex regional of environment, line loss abnormal location granularity is coarse, and the investigation inefficiency. Disclosure of Invention In view of the above, the present invention provides a method, a system, a device, a medium and a product for locating the management line loss of an automation device for a distribution line. The first aspect of the present invention provides a method for locating a management line loss of an automation device for a distribution line, including: For each section of line in a distribution line, acquiring the statistical loss electric quantity and the technical loss electric quantity of the line in the current statistical period; Acquiring a first difference value of the statistical power loss quantity and the technical power loss quantity of the circuit, and judging whether the proportion of the first difference value to the total power supply quantity of the circuit exceeds a preset first proportion threshold value or not; determining the line as an abnormal line for managing line loss under the condition that the proportion of the first difference value to the total power supply quantity of the line exceeds the preset first proportion threshold value; acquiring loss data of each movable segment on the management line loss abnormal line, judging whether the line loss state of each automatic segment is abnormal according to the loss data, and screening the automatic segment with abnormal line loss state as a management line loss abnormal section. Preferably, the method further comprises: And obtaining the net positive active power of the line at the substation gateway in the current statistical period and the sum of the net positive active power of all the distribution transformers, and determining the statistical loss power of the line in the current statistical period according to the difference value of the sum of the net positive active power of the substation gateway and the net positive active power of all the distribution transformers. Preferably, the method further comprises: the method comprises the steps of obtaining active loss of each wire segment on a circuit, accumulating the active loss of each wire segment according to sampling time to obtain total wire loss of the circuit at each time, and performing time integration on the total wire loss of the circuit at each time in a current statistical period to obtain wire technical loss electric quantity of the circuit in the current statistical period; the method comprises the steps of obtaining the load rate of each sampling moment of each public distribution transformer corresponding to a lin