A NEW ARCING FAULT LOCATION ALGORITHM FOR HV LONG TRANSMISSION LINE
If noise is thought of as a factor in identifying arcing fault, it is a good way toeliminate noise with wavelet.
The mathematical model to simulate and compute the pressure rise due to the internal arcing fault is described in this paper.
在建立开关柜内部 电弧故障数学模型的基础上,采用标准计算法对 电弧故障导致的压力上升进行了仿真计算。
INTERNAL ARCING FAULT IN PRE-FABRICATED SUBSTATION
The results ofsimulation of arcing fault by the TACS in EMTP show that the correctness and effectiveness of this criterion is verified.
Simulation and Experiments on Internal Arcing Faults in
THE CALCULATION AND PROTECTIO N MEASURES OF INTERNAL ARCING FAULTS IN MV METAL-CLAD SWITCHGEAR
In power system, the kinds of faults often occur on HV transmission line, and the single-phase-to earth arcing faults are the main forms of the faults.
This paper describes the fundamental physical phenomena of the internal arcing faults occurred in pre fabricated substation and gives some measures to reduce the pressure resulting from the internal arc faults.
简要叙述了预装式变电站中内部 电弧故障的基本物理现象 ,提出了几种措施来降低内部 电弧故障引起的压力。
The internal arcing faults in the metal-enclosed switchgear may cause serious damage to the equipment and fatal injury to personnel. To simulate the fault arcs based on appropriate calculation methods can not only shorten the development period of arc resistant switchgear, but also save the development cost.
开关柜内部 电弧故障会引起设备严重破坏和人员伤亡,对其进行仿真分析可为开发耐内部 电弧故障的成套设备提供科学依据,从而缩短开发周期,降低开发成本。
A NEW TIME-DOMAIN METHOD FOR LOCATING ARC FAULT IN EHV TRANSMISSION LINE USING ONE TERMINAL DATA
A NEW METHOD TO DETECT ARC FAULT IN SINGLE_PHASE AUTOMATIC RECLOSING
The some trends of low voltage intelligent electrical apparatus including new function of electronic release, asynchronous modular contactor with intelligent control and arc fault circuit breaker were introduced.
A New Least Error Square Method for Detecting and Locating Arc Fault in EHV Transmission Line
For an arc fault with duration of 1s,the calculation results show that the inner pressure increases rapidly within the first several millisecond,and decreases after getting to a summit value,while the heat effect will last for a relatively long period.
结果表明 ,对于持续时间为 1s的 电弧故障 ,柜体内部压力在最初阶段上升很快 ,在达到一个峰值后下降直至消失 ,但热效应持续时间较长。
STRENGTH CALCULATION OF MEDIUM VOLTAGE SWTTCHGEAR UNDER INTERNAL ARC-FAULT TEST
The Arc-Fault Circuit Interrupter——A New Low Voltage Protection Apparatus
A new low voltage protection apparatus——the arc-fault circuit interrupter was put forward to avoid fire by fault arc.
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From the calculated value of arc voltage amplitude it can be determined whether the fault is transient arcing fault or permanent arcless fault.
A novel technique for detecting a high impedance arcing fault due to a leaning tree has been introduced.
A training set of 60 elements from arcing fault events and 60 elements from motor starting events is acquired.
Although the primary event here is an arcing fault, this reduction in the voltage magnitude corresponds to a sag event, too.
As expected, some amount of voltage collapse is observed during the fault besides the additive noise due to the nature of arcing fault.
Arcing faults detection on power lines from the voltage and current signals
To avoid automatic reclosing on permanent faults, a new digital algorithm for arcing faults detection has been developed.
A series of simulation studies have shown that the algorithm can be used as an effective tool for arcing faults detection.
Two-stage numerical algorithm for distance protection, fault location and arcing faults recognition
In this paper, a novel two-stage numerical algorithm devoted to fault distance calculation and arcing faults recognition is presented.
The simulation results verify the ability of the suggested method to represent disk-to-disk breakdown and arc fault during impulse testing.
These types of products will not provide arc fault containment.
Unlike an oil filled recloser, SF6 and solid epoxy reclosers will not create a fire hazard in the unlikely event of an internal arc fault failure.
New Technology for Preventing Residential Electrical Fires: Arc-Fault Circuit Interrupters (AFCIs)
Fire loss estimates attributed to electrical wiring and the development of the arc-fault circuit interrupter for the prevention of residential electrical fires are discussed.
The industry voluntary standard for arc-fault circuit interrupters as well as the 1999 National Electrical Code requirement are reviewed.
Arc-fault containment is provided for standby switchboards and large main switchboards.
Suitable venting away from operators is provided where arc-fault containment is required.