Processing

Please wait...

Settings

Settings

Goto Application

1. CN107727986 - 一种具有后备功能的小电流接地故障选线系统及方法

Office China
Application Number 201710796987.6
Application Date 06.09.2017
Publication Number 107727986
Publication Date 23.02.2018
Grant Number 107727986
Grant Date 09.07.2019
Publication Kind B
IPC
G01R 31/02
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
02Testing of electric apparatus, lines, or components for short-circuits, discontinuities, leakage, or incorrect line connection
CPC
G01R 31/50
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
G01R 31/086
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
08Locating faults in cables, transmission lines, or networks
081according to type of conductors
086in power transmission or distribution networks, i.e. with interconnected conductors
G01R 31/52
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
52Testing for short-circuits, leakage current or ground faults
H02H 3/16
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
3Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection
16responsive to fault current to earth, frame or mass
Applicants 李晓明
Inventors 李晓明
Agents 济南圣达知识产权代理有限公司 37221
Title
(ZH) 一种具有后备功能的小电流接地故障选线系统及方法
Abstract
(ZH)
本发明公开了一种具有后备功能的小电流接地故障选线系统及方法,当主保护误动作、非故障线路断路器跳闸后,后备保护系统计算各条线路的断路器跳闸前后的故障量变化的绝对值的积分;根据这些积分的特征判断后备保护跳闸线路,实现后备保护灵敏动作。本发明后备保护能很快地跳开故障线路,提高保护的可靠性。

Also published as