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1. CN107925235 - Secured fault detection in a power substation

Office China
Application Number 201680029291.4
Application Date 21.03.2016
Publication Number 107925235
Publication Date 17.04.2018
Grant Number 107925235
Grant Date 13.10.2020
Publication Kind B
IPC
H02H 7/26
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
7Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
26Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred
H02H 7/28
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
7Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
26Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred
28for meshed systems
H02H 1/04
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
1Details of emergency protective circuit arrangements
04Arrangements for preventing response to transient abnormal conditions, e.g. to lightning
G01R 31/08
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
CPC
G01R 31/08
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
H02H 7/261
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
7Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
26Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
261involving signal transmission between at least two stations
H02H 7/28
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
7Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
26Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
28for meshed systems
H02H 1/04
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
1Details of emergency protective circuit arrangements
04Arrangements for preventing response to transient abnormal conditions, e.g. to lightning ; or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks
H02H 1/043
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
1Details of emergency protective circuit arrangements
04Arrangements for preventing response to transient abnormal conditions, e.g. to lightning ; or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks
043to inrush currents
H02H 1/046
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
1Details of emergency protective circuit arrangements
04Arrangements for preventing response to transient abnormal conditions, e.g. to lightning ; or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks
046upon detecting saturation of current transformers
Applicants ABB INC.
ABB公司
Inventors CUI TAO
崔韬
NUQUI REYNALDO
R·努奎
ISHCHENKO DMITRY
D·伊施彻恩科
WANG ZHENYUAN
王振远
Agents 北京市汉坤律师事务所 11602
北京市汉坤律师事务所 11602
Priority Data 62/135,469 19.03.2015 US
Title
(EN) Secured fault detection in a power substation
(ZH) 功率变电站中安全的故障检测
Abstract
(EN)
Systems and methods for fault detection and protection in electric power systems that evaluates electromagnetic transients caused by faults. A fault can be detected using sampled data from a first monitored point in the power system. Detection of fault transients and associated characteristics, including transient direction, can also be extracted through evaluation of sample data from other monitored points in the power system. A monitoring device can evaluate whether to trip a switching device in response to the detection of the fault and based on confirmation of an indication of detection offault transients at the other monitored points of the power system. The determination of whether to trip or activate the switching device can also be based on other factors, including the timing of receipt of an indication of the detection of the fault transients and/or an evaluation of the characteristics of the detected transients.

(ZH)
用于电力系统中故障检测和保护的系统和方法,该系统和方法评估由故障引起的电磁暂态。故障可以通过使用来自电力系统中第一监测点的采样数据而被检测。故障暂态和相关特性(包括暂态方向)的检测还可以通过对来自电力系统中其他监测点的采样数据进行评估而被提取。监测设备可以响应于故障检测并且基于在电力系统的另一监测点处故障暂态的检测指示评估是否来将开关设备跳闸。对是否将开关设备跳闸或激活的确认还可以是基于其他因素,包括接收到故障暂态的检测指示的定时和/或所检测的暂态特性的评估。

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