Study of the fault reducing and clearing on digital logic circuit teaching practice 数字逻辑电路教学实践中故障排查的研究
This essay expounds the assemble and principles of WK-06 oil filling system and analyses fault reason, fault diagnosis and trouble clearing, etc. 文章结合工作实际,论述了罐装发油系统的组成及原理。
Fault Diagnosis and Clearing of Headlamp Self-leveling System on MAZDA M6 马自达M6轿车前照灯自动调平系统的故障诊断与排除
Critical fault clearing time of multi-machine systems with the quadratic surface method 用二次曲面方法求解多机系统故障临界清除时间
Attention should be paid to special switching over-voltage, grounding fault over-voltage and tripping over-voltage caused by short circuit faults clearing in UHV system. 特高压系统中突显的特殊操作过电压,即接地过电压和切除短路故障分闸过电压;
Fast fault clearing and isolation of power distribution lines 配电线路故障的快速切除与隔离
Fault Diagnosis and Clearing of Unit Vibration 机组振动故障诊断和处理输水管的振动
Usage and Fault Clearing of YQS Submersible Motor Used in the Well 浅谈YQS井用潜水电机的使用与故障排除
This paper introduces the fault diagnosis and reading and clearing method of error code of ABS self-diagnostic system of Bluebird passenger car. 介绍了蓝鸟系列轿车ABS自诊断系统中故障诊断以及故障码的读取与清除方法。
In this paper, analysis shows that large reverse voltage may be induced across the field winding during the transient processes of synchronous generator with rectifier excitation when a line to line or 3-phase short circuit fault as well as the short circuit clearing with grid voltage recovery. 本文分析表明,带整流器励磁的同步发电机,当两相短路或三相短路以及短路切除恢复到电网电压的瞬态过程中,在励磁绕组两端可能感生高反向电压。
According to the components, the operation principles and the parameter analysis of the ICP's ignition system, the cause of fault that can not ignite was analyzed and the methods of fault clearing were provided. 从ICP光谱仪点火系统的组成部分、工作原理、参数分析入手,分析不能正常点火故障及排除方法。
It also shows that after fault clearing, even the system power flow is below the transient stability limits, the designed MOV can have unwanted conduction and may affect stability control adversely. 在暂态稳定试验中发现,即使在暂稳极限范围内,故障切除后,目前设计的限压器仍可能动作,影响稳定控制。
A characteristic contingency set capable of covering all kinds of contingencies and easily defining discretional contingency sequence and fault clearing rules is presented for fast analysis of the system operation mode. 为快速分析系统运行模式,设计了可涵盖所有类型故障、可任意设置故障发生序列和故障切除规则的预想事故集。
Fault Clearing of Steam Turbine Oil System 汽轮机油系统故障消除
The structure of the air bag system on HONDA CR-V is introduced here with the method of fault code reading and clearing and the diagnostic ways of each fault code. 介绍本田CR-V型汽车安全气囊系统的组成,故障码的读取与清除方法,各故障码的诊断方法。
The computation results shows that the method can accurately approximate the cumulative distribution function of fault critical clearing time, and reduces computational burden and improves the speed of computation. 计算结果能很好地描述临界故障切除时间的实际概率分布,且能显著地减少计算量,提高计算速度。
The principle circuit and structure of fault monitoring sensor for aerocannon are introduced. When a fault takes place in the aerocannon, the principle of fault clearing of the monitoring sensor and its process are stated in detail. Shooting 介绍了航炮故障监测传感器的基本电路与结构,详细论述了航炮故障监测传感器,在航炮发生射击故障的情况下的排故原理与过程
Introduce some relevant knowledge, including all kinds of the insulation test, the sort of fault, the reason for fault, fault monitoring, the method of judgement, and the measures of trouble clearing. 介绍有关领域知识,包括电气设备的各种绝缘试验、故障的种类、故障原因、故障监测与判断方法以及排除故障的对策。
The expression of energy margin is given using full differential formula. And the energy margin sensitivity is calculated by state variable sensitivity computation in fault clearing point and controlling UEP. 从能量裕度的数学表达式出发,利用能量裕度的全微分公式,将能量裕度的灵敏度计算转化为故障清除时刻以及相关不稳定平衡点处系统状态变量的灵敏度计算。
So the traditional stability analysis methods cannot be applied to the new condition. This paper proposed a new method to compute the probability distribution of fault critical clearing time. 这使得传统的稳定分析方法已不能适用于新的形势,为此提出了概率稳定分析这一新的课题。
A method for computing the probability distribution of fault critical clearing time 一种临界故障切除时间概率分布的求解方法
This paper also proposed a method of computing the probability distribution of fault critical clearing time using Gram-Charlier expansion series. 考虑母线负荷的不确定性时,提出了一种根据Gram-Charlier级数展开式计算故障临界切除时间概率分布的计算方法。
Setting backup protection according to step principle will always lead to long fault clearing time of relays in backbone network as well as power plants, and further a threat against security of power network. 电力系统继电保护中后备保护按阶梯形配置整定,必然带来主干电网和发电厂后备保护动作时间太长、影响电网安全的问题。
Using this method, the probability of fault critical clearing time distributing in an interval closed to the expectation value can be determined, and it can act as an implement for stability analysis. 利用该方法,可根据故障后临界故障切除时间的概率分布,确定临界故障切除时间分布在期望值附近某区间内的概率,为稳定分析提供了判断的依据。
Feasibility Study on Whole Line Fault High Speed Clearing Protection for Distribution Power System 配电线路全线速切保护的可行性研究
The dynamical simulation test results show that the performance of the protection relay is excellent, which can completely meet the requirement of rapid fault clearing for lines with taps. 动模试验结果表明,所提出的多端线路光纤电流差动保护装置性能优越,完全能够满足T接线路全线速动切除故障的要求,在中低压系统中具有良好的推广使用价值。
New characteristics appeared in Extra-high Voltage Transmission Line protection because of high voltage class, large power supply and high reliability needs. Fiber-optic relay protection is a new relay protection system which can completely meet the requirement of rapid fault clearing for lines. 由于电压等级高、供电功率大、可靠性要求高,超高压输电线路继电保护技术出现了一些新特点,光纤保护就是为满足全线速动要求而采用的新型继电保护装置。
The failure of timely fault clearing will cause great economic losses. 发电机造价昂贵,若发生故障不及时切除将造成很大的经济损失。
A long fault clearing time may cause a lot of problems, such as the electrical equipment may be deformed or even destroyed, the bus load may be rejected, a long time voltage drop, the transient fault develops into a permanent fault, et al. 故障切除延时过长导致电气设备变形甚至烧毁、同一母线大量甩负荷、长时间电压跌落、用电设备毁坏、瞬时故障发展成永久故障等问题。
Considering the impact on system stability, choose fault locations and fault selection based on power flow results which we have got. Calculate transient stability of system after setting fault clearing time. 最后在系统各种运行方式潮流的基础上,考虑对系统稳定影响的严重性大小,选择故障地点和故障类型,设定故障切除时间进行暂态稳定计算。