Single-phase grounding on-line fault locating method based on distribution automation main station

A single-phase ground fault and power distribution automation technology, applied in the direction of the fault location, can solve problems such as large errors and fault location errors, and facilitate maintenance and processing, increase accuracy and reliability, and improve adaptability and accuracy Effect
CN107589341AActive Publication Date: 2018-01-16ZHUHAI XUJIZHI ELECTRIFIED WIRE NETING AUTOMATIONCO +1
2 Cites 12 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHUHAI XUJIZHI ELECTRIFIED WIRE NETING AUTOMATIONCO
Publication Date
2018-01-16

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a single-phase grounding on-line fault locating method based on a distribution automation main station. The single-phase grounding on-line fault locating method based on a distribution automation main station includes the steps: extracting each fault characteristic quantity various signals when a single-phase earth fault occurs; utilizing a fuzzy clustering analysis methodto fuse each fault characteristic quantity; and fully applying the fault information, accurately positioning the fault position, thus not only improving accuracy and reliability of fault detection, and also improving adaptability and accuracy of fault determination.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of fault location of distribution network lines, in particular to a single-phase grounding online fault location method based on a distribution automation master station. Background technique

[0002] my country's medium-voltage distribution network is dominated by the neutral point ungrounded mode, and the line faults of the distribution network are mainly divided into phase-to-phase short circuit and single-phase ground fault. For the phase-to-phase short circuit, due to the large short-circuit current and the obvious fault path, the fault section location technology is mature. For single-phase ground faults, due to the complex structure of the distribution network and the small fault current during single-phase ground faults, the problem of fault line selection has not yet been satisfactorily resolved, and it is more difficult to locate the fault section. Statistics show that single-phase ground faults account for...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More