CN-121978451-A - Identification method and system for hidden faults of power distribution network

CN121978451ACN 121978451 ACN121978451 ACN 121978451ACN-121978451-A

Abstract

The invention discloses a method and a system for identifying hidden faults of a power distribution network, relates to the technical field of identification of hidden faults, and is used for determining an abnormal identification system of a circuit based on a plurality of circuit early warning projects, a section topological relation and the state of the power distribution network, so that the accuracy of the abnormal identification system of the circuit is improved. The method comprises the steps of determining a plurality of corresponding fault characteristics according to detection of an abnormal identification system of a line, determining a corresponding fault area based on characteristic positions of the plurality of fault characteristics, corresponding characteristic forms and corresponding line management and control nodes, determining corresponding fault recording data based on identification of the fault area, determining a plurality of fault nodes based on data combination of the fault recording data and the fault area and working process of a power distribution network, and determining hidden faults of the power distribution network according to node positions of the fault nodes, corresponding hidden contents and working contents of the fault area, so that accuracy of hidden faults of the power distribution network is improved.

Inventors

FENG YUE
YIN CHENGCHEN
SHEN GUOBIAO
WANG KUNLUN
ZHANG YING
Hai Leiwei
LI WEIKANG
DONG WENJIN
Sun Benjiang
QIAN YONGLIANG
ZHANG WENMING
YANG YONG

Assignees

云南电网有限责任公司文山供电局

Dates

Publication Date: 20260505
Application Date: 20251219

Claims (10)

1. The method for identifying the hidden faults of the power distribution network is characterized by comprising the following steps of: In the working process of the power distribution network, corresponding line data combinations are determined based on detection of lines of the power distribution network, and a section topological relation is determined according to each line data combination and a line path of the power distribution network; Determining a plurality of line control nodes according to the identification of the topological relation of the section, marking the state of each line control node, and determining a corresponding line early warning event according to the early warning state of the line control node; determining a plurality of corresponding line early warning items based on the detection of the line early warning event, and determining an abnormal recognition system of the line based on the plurality of line early warning items, the section topological relation and the state of the power distribution network; Determining a plurality of corresponding fault characteristics according to the detection of the abnormal identification system of the line, determining a corresponding fault area based on the characteristic positions of the plurality of fault characteristics, the corresponding characteristic forms and the corresponding line management and control nodes, and determining corresponding fault recording data based on the identification of the fault area; And determining a plurality of fault nodes based on the fault wave recording data, the data combination of the fault area and the working process of the power distribution network, and determining hidden faults of the power distribution network according to the node positions of the fault nodes, the corresponding hidden contents and the working contents of the fault area.
2. The method for identifying hidden faults in a power distribution network according to claim 1, wherein during operation of the power distribution network, corresponding line data combinations are determined based on detection of lines of the power distribution network, and a section topological relationship is determined according to each line data combination and a line path of the power distribution network, including: Monitoring the work of the power distribution network in real time, determining a plurality of lines according to the identification of the distribution diagram of the power distribution network, determining a plurality of corresponding work data according to the detection of each line, and determining a corresponding line data combination based on the matching of each line and the corresponding plurality of work data; and determining a plurality of line nodes according to the detection of the distribution diagram of the power distribution network, determining a line path of the power distribution network according to the node information of the plurality of line nodes and the corresponding node positions, and determining a section topological relation based on the line path of the power distribution network, the corresponding lines and the corresponding various line data combinations.
3. The method for identifying hidden faults of a power distribution network according to claim 1, wherein the determining a plurality of line management and control nodes according to the identification of the topological relation of the section, marking the state of each line management and control node, and determining a corresponding line early warning event according to the early warning state of the line management and control node comprises: Identifying the topological relation of the section, determining a plurality of line control areas in the identification process, and determining corresponding line control nodes according to the identification of each line control area so as to determine a plurality of line control nodes; And in the plurality of line control nodes, determining the state of each line control node based on the identification of the line control node, if the state of the line control node is an early warning state, determining a corresponding line early warning identifier based on the tracing of the line control node, and determining a corresponding line early warning event according to the detection of the line early warning identifier.
4. The method for identifying hidden faults of a power distribution network according to claim 1, wherein determining a corresponding plurality of line early warning items based on detection of the line early warning event, and determining an anomaly identification system of the line based on the plurality of line early warning items, the section topological relation and the state of the power distribution network comprises: the line early warning event is monitored in real time, dynamic detection is carried out on the line early warning event, a plurality of line early warning contents are determined in the detection process, and a plurality of corresponding line early warning items are determined according to the plurality of line early warning contents, the corresponding early warning areas and the corresponding line management and control nodes.
5. The method for identifying hidden faults in a power distribution network according to claim 4, wherein the determining a corresponding plurality of line early warning items based on detection of the line early warning event, and determining an anomaly identification system of the line based on the plurality of line early warning items, the section topological relation and the state of the power distribution network, further comprises: Collecting a plurality of working data of a power distribution network, determining the state of the power distribution network according to the plurality of working data of the power distribution network, determining first re-anomaly identification content according to a plurality of line early warning projects and the state of the power distribution network, determining second re-anomaly identification content according to a section topological relation and the state of the power distribution network, and determining an anomaly identification system of a line based on the first re-anomaly identification content and the second re-anomaly identification content.
6. The method for identifying a hidden fault in a power distribution network according to claim 1, wherein determining a plurality of corresponding fault features according to the detection of the anomaly identification system of the line, determining a corresponding fault region based on feature positions of the plurality of fault features, a corresponding feature morphology and a corresponding line management node, and determining corresponding fault record data based on the identification of the fault region, includes: in the abnormal recognition system of the line, the abnormal recognition system of the line is dynamically detected, a plurality of fault events are determined in the detection process, and in each fault event, corresponding fault characteristics are determined based on the recognition of the fault event so as to acquire a plurality of fault characteristics.
7. The method for identifying a hidden fault in a power distribution network according to claim 6, wherein the determining a plurality of corresponding fault features according to the detection of the anomaly identification system of the line, determining a corresponding fault area based on feature positions of the plurality of fault features, corresponding feature shapes and corresponding line management nodes, and determining corresponding fault record data based on the identification of the fault area, further comprises: determining a feature position of each fault feature based on the identification of the fault feature, determining a feature form of the fault feature based on the form detection of the fault feature, and determining a first fault range according to the feature positions of the fault features and the corresponding line management and control nodes; The method comprises the steps of determining a first fault range according to the characteristic forms of a plurality of fault characteristics and corresponding line control nodes, determining a corresponding fault area based on the matching of a first fault range and the first fault range, identifying the fault area, determining a plurality of fault data in the identification process, and determining corresponding fault recording data according to the detection of the plurality of fault data.
8. The method for identifying hidden faults of a power distribution network according to claim 1, wherein determining a plurality of fault nodes based on the fault record data, the data combination of the fault areas and the working process of the power distribution network, and determining the hidden faults of the power distribution network according to the node positions of the fault nodes, the corresponding hidden contents and the working contents of the fault areas comprises: And determining a plurality of data of the fault area based on real-time monitoring of the fault area, determining corresponding data combinations according to matching of the plurality of data, determining a fault management and control frame according to the fault wave recording data and the data combinations of the fault area, and determining a plurality of fault nodes based on matching of the fault management and control frame and the working process of the power distribution network.
9. The method for identifying hidden faults of a power distribution network according to claim 8, wherein the determining a plurality of fault nodes based on the fault record data, the data combination of the fault areas and the working process of the power distribution network, and determining the hidden faults of the power distribution network according to the node positions of the fault nodes, the corresponding hidden contents and the working contents of the fault areas, further comprises: determining the node position of each fault node based on the identification of the fault node, and determining hidden content according to the depth detection of the fault node, wherein at the moment, the hidden content has an association relationship with the corresponding hidden fault; determining a first fault coefficient according to the node position of each fault node and the working content of the fault area, determining a second fault coefficient according to the hidden content of each fault node and the working content of the fault area, and determining the hidden fault of the power distribution network based on the mapping relation of the first fault coefficient, the second fault coefficient and the hidden fault.
10. A concealed fault identification system for an electrical distribution network, characterized in that the concealed fault identification system for an electrical distribution network is applied to the concealed fault identification method for an electrical distribution network according to any one of claims 1-9.

Description

Identification method and system for hidden faults of power distribution network Technical Field The invention relates to the technical field of identification of hidden faults, in particular to an identification method and an identification system of hidden faults of a power distribution network. Background Along with the development of science and technology, the distribution network is gradually applied to people's life to as the part of conveying circuit, the distribution network has a plurality of circuits, and each circuit extends along preset route, and carries out directional transmission to electric power, in prior art, gather the data of each circuit, and mark the state of each circuit, confirm the trouble of distribution network according to the state and the unusual signal of each circuit, neglected the node position of each trouble node, corresponding disguised content, the disguised trouble of distribution network's precision has been led to lowly. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides a method and a system for identifying hidden faults of a power distribution network. The embodiment of the invention provides a method for identifying hidden faults of a power distribution network, which comprises the following steps: In the working process of the power distribution network, corresponding line data combinations are determined based on detection of lines of the power distribution network, and a section topological relation is determined according to each line data combination and a line path of the power distribution network; Determining a plurality of line control nodes according to the identification of the topological relation of the section, marking the state of each line control node, and determining a corresponding line early warning event according to the early warning state of the line control node; determining a plurality of corresponding line early warning items based on the detection of the line early warning event, and determining an abnormal recognition system of the line based on the plurality of line early warning items, the section topological relation and the state of the power distribution network; Determining a plurality of corresponding fault characteristics according to the detection of the abnormal identification system of the line, determining a corresponding fault area based on the characteristic positions of the plurality of fault characteristics, the corresponding characteristic forms and the corresponding line management and control nodes, and determining corresponding fault recording data based on the identification of the fault area; And determining a plurality of fault nodes based on the fault wave recording data, the data combination of the fault area and the working process of the power distribution network, and determining hidden faults of the power distribution network according to the node positions of the fault nodes, the corresponding hidden contents and the working contents of the fault area. The embodiment of the invention provides a hidden fault identification system of a power distribution network, which is applied to the hidden fault identification method of the power distribution network. Compared with the prior art, the invention has the beneficial effects that: (1) In the working process of the power distribution network, corresponding line data combinations are determined based on detection of lines of the power distribution network, a section topological relation is determined according to each line data combination and a line path of the power distribution network, a plurality of line control nodes are determined according to identification of the section topological relation, states of each line control node are marked, corresponding line early warning events are determined according to early warning states of the line control nodes, a plurality of corresponding line early warning items are determined based on detection of the line early warning events, an abnormal identification system of the lines is determined based on the plurality of line early warning items, the section topological relation and the states of the power distribution network, the states of each line control node are introduced, and the consideration of the plurality of line early warning items, the section topological relation and the states of the power distribution network is compatible, so that the accuracy of the abnormal identification system of the lines is improved. (2) The method comprises the steps of determining a plurality of corresponding fault characteristics according to detection of an abnormal identification system of a line, determining a corresponding fault area based on characteristic positions, corresponding characteristic forms and corresponding line management and control nodes of the fault characteristics, determining corresponding fault recording data based on identification of the fault area, de