CN-122026289-A - Line current limit value generation method, electronic device, storage medium, and program product

CN122026289ACN 122026289 ACN122026289 ACN 122026289ACN-122026289-A

Abstract

The embodiment of the disclosure provides a line current limit value generation method, electronic equipment, a storage medium and a program product. The method is applied to a power distribution network, the power distribution network comprises a plurality of switches, the switches are connected through lines, the method comprises the steps of obtaining graph mode information of the power distribution network, wherein the graph mode information at least comprises switch information and line information of each switch, determining a variable ratio extraction state of each switch according to the switch information of the switch, determining a line diameter value of a line corresponding to the switch according to the variable ratio extraction state of the switch and the line information, and determining a current limit value of the line where each switch is located according to the variable ratio extraction state of each switch and the line diameter value of the line corresponding to the switch. The method and the device have the advantages that the effect of efficiently and accurately generating the line current limiting value according to the graph mode information of the power distribution network is achieved.

Inventors

LIN WENXING
ZHOU HAI
LU SHAN
TANG ZIYI
CHEN ZHICONG

Assignees

广东电网有限责任公司韶关供电局

Dates

Publication Date: 20260512
Application Date: 20260109

Claims (13)

1. A method for generating a line current limit value, wherein the method is applied to a power distribution network, the power distribution network comprises a plurality of switches, and the switches are connected through lines, the method comprises: the method comprises the steps of obtaining graphic model information of the power distribution network, wherein the graphic model information at least comprises switch information and line information of each switch; For each switch, determining a variable value extraction state of the switch according to switch information of the switch; extracting a state and the line information according to the variable ratio value of the switch, and determining a line diameter value of a line corresponding to the switch; And determining the current limiting value of the circuit where each switch is positioned according to the variable value extraction state of each switch and the line diameter value of the circuit corresponding to the switch.
2. The method of claim 1, wherein determining the variance value extraction state of the switch based on the switch information of the switch comprises: When the switch type contained in the switch information is a constant maintenance switch, acquiring a switch variable value of the switch, and marking the variable value extraction state of the switch as the extracted variable value; and when the switch type contained in the switch information is a non-constant maintenance type switch, marking the variable value extraction state of the switch as the non-extraction state of the variable value.
3. The method according to claim 2, wherein the determining the line diameter value of the line corresponding to the switch according to the state of the variable value extraction of the switch and the line information includes: For a target switch, determining a line path set corresponding to the target switch according to line information related to the target switch, wherein the target switch is a switch with the extracted variable value in the variable value extraction state; and determining the wire diameter value of the circuit corresponding to the target switch according to the wire diameter set.
4. A method according to claim 3, wherein determining the set of wire diameters corresponding to the target switch based on the line information associated with the target switch comprises: When the line information related to the target switch meets a first preset condition, determining the line diameter set corresponding to the target switch by adopting a first selection mode; when the line information related to the target switch meets a second preset condition, determining the line diameter set corresponding to the target switch by adopting a second selection mode; and when the line information related to the target switch meets a third preset condition, determining the line diameter set corresponding to the target switch by adopting a third selection mode.
5. The method of claim 4, wherein the first predetermined condition comprises the target switch not having a previous switch adjacent thereto, or the target switch having a previous switch or line and the target switch not being on a main line, or the target switch having a previous switch or line, being on the main line, the target switch not being a tie switch and the tie switch being in an off state; the determining the line path set corresponding to the target switch by adopting a first selection mode comprises the following steps: and determining all lines from the target switch to the next adjacent switch as the line path set corresponding to the target switch.
6. The method of claim 5, wherein the second predetermined condition comprises the target switch being the last switch or line, being on the main line, the target switch not being a tie switch, and the tie switch being in a closed state; The determining the line path set corresponding to the target switch by adopting a second selection mode comprises the following steps: and determining all lines from the target switch to the adjacent last switch as the line path set corresponding to the target switch.
7. The method of claim 5, wherein the third predetermined condition comprises the target switch being present on a last switch or line, being on the main line, and the target switch being a tie switch; the determining the line path set corresponding to the target switch by adopting a third selection mode includes: And determining all lines from the target switch to the adjacent last switch and all lines from the target switch to the adjacent next switch as the line diameter set corresponding to the target switch.
8. A method according to claim 3, wherein determining the wire diameter value of the wire corresponding to the target switch from the wire diameter set comprises: Determining a wire diameter bearing limit value corresponding to each wire in the wire diameter set based on a corresponding relation table of a wire diameter value and a wire limit ammeter; And determining the minimum wire diameter bearing limit value in the wire diameter set as the wire diameter value of the circuit corresponding to the target switch.
9. The method of claim 1, wherein the determining the current limit value of the line in which each switch is located according to the state of the variable ratio extraction of each switch and the line diameter value of the line corresponding to the switch comprises: Under the condition that the variable ratio extraction state of the switch is extracted and the line diameter value of the line corresponding to the switch is obtained, determining the smaller value of the variable ratio of the switch and the line diameter value of the line corresponding to the switch as the current limiting value of the line where the switch is located; And under the condition that the variable ratio extraction state of the switch is extracted and the line diameter value of the line corresponding to the switch is not obtained, determining the smaller value of the variable ratio of the switch and the variable ratio of the last switch adjacent to the switch as the current limiting value of the line where the switch is located.
10. A line current limit value generating device, wherein the device is applied to a power distribution network, the power distribution network comprises a plurality of switches, and a plurality of the switches are connected through lines, the device comprises: the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring graphic model information of the power distribution network, and the graphic model information at least comprises switch information and line information of each switch; the variable ratio value unit is used for determining a variable ratio value extraction state of each switch according to the switch information of the switch; The line diameter value unit is used for determining the line diameter value of the line corresponding to the switch according to the state of the variable ratio extraction of the switch and the line information; and the current limiting value unit is used for determining the current limiting value of the circuit where each switch is positioned according to the variable value extraction state of each switch and the line diameter value of the circuit corresponding to the switch.
11. An electronic device comprising a processor and a memory communicatively coupled to the processor; The memory stores computer-executable instructions; the processor executes computer-executable instructions stored in the memory to implement the method of any one of claims 1 to 9.
12. A computer readable storage medium having stored therein computer executable instructions which when executed by a processor are adapted to carry out the method of any one of claims 1 to 9.
13. A computer program product comprising a computer program which, when executed by a processor, implements the method of any one of claims 1 to 9.

Description

Line current limit value generation method, electronic device, storage medium, and program product Technical Field The present application relates to the field of line current limiting, and in particular, to a line current limiting value generating method, an electronic device, a storage medium, and a program product. Background In the operation process of the power distribution network, the current of the lines in the power distribution network is required to be limited so as to ensure the safe operation of equipment and prevent the fault problem caused by overlarge current in the lines. The current limiting value is the core for limiting the current of the circuit, and is not only a necessary condition for ensuring the normal operation of equipment, but also an important parameter for monitoring the operation state of the power transmission network. Through reasonable setting of the current limiting value, power grid equipment can be effectively protected, the probability of power failure accidents is reduced, and the service life of the equipment is prolonged. At present, the current limiting mode of the circuit depends on a manual intervention mode, is low in efficiency and is easily influenced by personal experience differences, the current limiting effect is large in difference, deviation is easy to occur, and in addition, the manual intervention is difficult to timely cope with the change in the power distribution network. Therefore, how to accurately and efficiently set the current limiting value of the circuit in the power distribution network becomes a current problem to be solved. Disclosure of Invention The embodiment of the disclosure provides a line current limit value generation method, electronic equipment, a storage medium and a program product, which are used for achieving the effect of efficiently and accurately generating a line current limit value. In a first aspect, an embodiment of the present disclosure provides a method for generating a line current limiting value, where the method is applied to a power distribution network, the power distribution network includes a plurality of switches, and the plurality of switches are connected by lines, and the method includes: the method comprises the steps of obtaining graphic model information of a power distribution network, wherein the graphic model information at least comprises switch information and line information of each switch; for each switch, determining a variable value extraction state of the switch according to the switch information of the switch; Extracting a state and line information according to a variable ratio value of the switch, and determining a line diameter value of a line corresponding to the switch; And extracting a state according to the variable ratio value of each switch and the line diameter value of the line corresponding to the switch, and determining the current limiting value of the line where each switch is positioned. In one possible embodiment, determining the change-ratio value extraction state of the switch according to the switch information of the switch includes: when the switch type contained in the switch information is a constant maintenance switch, acquiring a switch variable value of the switch, and marking the variable value extraction state of the switch as extracted variable value; And when the switch type contained in the switch information is a non-constant maintenance type switch, marking the variable value extraction state of the switch as the non-extraction state of the variable value. In one possible embodiment, the method for determining the line diameter value of the line corresponding to the switch according to the state of the state extracted by the variable value of the switch and the line information includes: For a target switch, determining a line path set corresponding to the target switch according to line information related to the target switch, wherein the target switch is a switch with a change value extracted state as a change value extracted; And determining the wire diameter value of the circuit corresponding to the target switch according to the wire diameter set. In one possible implementation manner, determining the set of wire diameters corresponding to the target switch according to the line information related to the target switch includes: When the line information related to the target switch meets a first preset condition, determining a line diameter set corresponding to the target switch by adopting a first selection mode; When the line information related to the target switch meets a second preset condition, determining a line diameter set corresponding to the target switch by adopting a second selection mode; And when the line information related to the target switch meets a third preset condition, determining a line diameter set corresponding to the target switch by adopting a third selection mode. In one possible implementation, the first preset conditio