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Usually, distribution networks operate in arborescence mode, so in the simulation of fault analysis the impact of faulty switch element on system reliability is apportioned to failure consequences of adjacent sections that connect to switch, and then an equivalent analytical model considering switch fault is proposed. Thus, not having to conduct the reliability analysis of switch element singly, the impact of switch element fault on system reliability can be calculated. Applying the proposed algorithm in RBTS-BDS6 system, RBTS-BUS4 system and actual medium-voltage distribution network to conduct reliability assessment, the results show that the proposed algorithm is superior in speed and possesses efficiency and engineering practicality.

配电网常具有树状运行特点,在故障解析模拟时,将开关元件故障对系统可靠性的影响分摊到连接开关的相邻分块的故障后果中,进而提出计及开关故障的可靠性等值解析模型,不需单独进行开关元件故障的可靠性分析即可计算其对系统可靠性的影响,应用该算法对RBTS-BUS6和RBTS-BUS4系统及实际中压配电网进行了可靠性评估,结果表明该算法有较明显的速度优势,具有高效性和工程实用性。

Multiple transition fault model is an effective fault model for both the capacitive and inductive coupling induced faults on bus. But the previously generated test set based on MT fault model tends to be redundant.

多跳变故障模型是一种有效的总线串扰故障模型,可以测试由电容和电感导致的串扰故障,但是MT的原始测试集存在严重的向量冗余。

Methods to rotor of centrifugal compressor"s condition monitoring and fault diagnosis are summed up. Peak-to-peak value is an essential reference value of centrifugal compressor"s condition monitoring, which is easy to implementation in practice. On the other hand, according to fault diagnosis, power spectrum and axis obit also works. The direction of eddyis gained from full spectrum, which is vital in fault diagnosis. In a word, to make sure make an exact conclusion, different method should be put in used.

总结了离心式压缩机转子振动的监测和诊断的方法:在压缩机的状态监测的方面,峰—峰值是其主要的手段,实践证明其实现过程非常简单而且非常有效;而对于故障诊断,常用的功率谱分析和轴心轨迹都有一定的作用,全谱可以判断转子的进动方向,所以在分析过程中可以综合以上多种方法,能更加明确故障原因。

For medical fault ,the objectiveness of fault and the presumption of fault should be applied .

com 应建立权威的医疗损害鉴定制度,以保证鉴定结论的真实性、科学性、客观性和公正性。

It either can be started by fault diagnosis, which can assist to make decision after accident, or can be started by static security analysis of the power system, which can be used to make the accident prefiguration and compile the fault preview.

本文研究并实现了一种在线应用的地区电网故障恢复系统,该系统既可以由故障诊断程序启动,用于在线辅助事故后的调度决策,也可以由电网静态安全分析程序启动,用于做事故预想和辅助编制事故预案。

In real flight, multiple sensors of aircraft engine control system may fault at a time. In order to solve this problem, a revised multiple-failure-hypothesis based testing is investigated. This approach uses multiple Kalman filters, and each of Kalman filter is designed based on a specific hypothesis for detecting specific sensors fault, and then uses WSSR (Weighted Sum of Squared Residual) to deal with Kalman filter residuals, and residual signals are compared with threshold in order to make fault detection decisions. The simulation results show that the proposed method can be used to detect multiple sensors soft failures fast and accurately.

一般认为两个以上传感器同时发生故障的概率较小,但实际上不能排除其发生的可能性;提出了一种改进的多重故障假设方法来解决航空发动机控制系统多传感器同时发生软故障的问题,这一方法采用一组卡尔曼滤波器,每个滤波器对应一个被检测传感器的故障模态;采用残差加权二乘方处理滤波残差并与门限值作比较来判断是否发生故障;仿真结果表明,所提出的方法能有效解决多传感器软故障的检测与隔离问题。

On the basis of analyzing the forming conditions, establishing reservoir forming pattern of vertical migration-fault sealing, developing petroleum reservoir types of fault sealing and fault together with anticline, it is pointed out that the traps near the deep depression and non-piercement salt dome should be the first choice of exploration target area.

在对该区油气成藏条件分析基础上,建立了研究区盐上层系垂向运移-断层封堵型成藏模式,形成断层遮挡型及断层与背斜组合型两种油藏类型,并指出距离盐上深洼陷较近的、盐丘非刺穿构造上的圈闭是首选的勘探目标区。

Combined the geological analysis with analogue modeling experiments,the evolution of the Yinggehai basin could be divided into four main stages:(1) Before 42Ma,controlled by the southeastward extension of the Beibu Gulf basin on the northern continental margin,the Yinggehai basin experienced dextral pull-apart.Bounded by NS-trending Yingxi fault,the transtensional areas mainly are the northwest part and along the eastern boundary of the basin.(2) From 42 to 21Ma,the development of the main rift body in Yinggehai basin was mainly controlled by the southward slip and clockwise rotation of the Indochina block along the Red River fault zone,and the sedimentation was strengthened due to the sinistral transtension.In the east,the subsidence is deepened due to the dextral transtension.(3) From 21 to 10.4Ma,the sinistral movement of the Indochina block slowed down to still.From 21 to 15.5Ma,the northwest part of the basin began to inverse locally because of post-rift thermal subsidence of the whole basin.(4) From 10.4Ma to present,the basin was affected by the dextral movement of the South China block along the Red River fault zone and thermal accident in a new phase at 5Ma.

结合地质分析和物理模拟实验,莺歌海盆地的演化大致可以分为以下4个主要阶段:早期(42 Ma以前)主要受到南海北部陆缘裂解造成的右旋转换伸展作用的影响,但影响范围较小,主要为莺歌海盆地西北部和东部边界。42~21 Ma期间,主要受控于印支地块左行走滑和顺时针旋转作用的影响,莺歌海盆地在此期间发育了主体裂陷体系,东侧受到右旋转换伸展应力场的叠加影响而导致沉降加强;21~10.4 Ma期间,受印支地块逐渐减弱直至停止的左行走滑作用的影响,盆地西北部在21~15.5 Ma期间发生局部反转褶皱,但盆地整体进入以热沉降为主的时期;10.4 Ma以后,盆地受华南地块沿红河断裂右旋走滑作用和5 Ma以后新一期热事件的影响。

The fault mode and f ault tree analysis for large turbogenerators are carried out by ways of su bsystems, subcomponent s and fault trees, which can be used to supply enough diag nostic rule sources and theoretical base for the study of fault diagnostic exper t system of large turbogenerators.

按照分系统、分部件的方式,并引入故障树的方法,对大型汽轮发电机展开了有关故障模式和故障树的分析,从而最终为大型汽轮发电机故障诊断专家系统的研究提供足够的诊断规则来源和理论基础。

This method can ensure to obtain all reasonable solutions meeting the fault equation, can be applied for various fault correlation criteria (such as various residual vector norm criteria) and underdetermined fault equation, and the algorithm is very simple and facile, not necessary to compile specific program for every particular condition.

首先给出求解故障方程的Monte Carlo算法,该算法能够保证得到满足故障方程的全部合理解;能够简单地用于各种故障相关性准则(例如各种残差向量范数准则)以及亚定故障方程的求解问题;并且算法简单易行,无需为每个特定情况专门编制计算程序。

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Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严,以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆,把帆卷起,系住。

Therefore, positively advances the interest rate marketability reform is one of current our country finance reform important tasks.

因此,积极推进利率市场化改革是当前我国金融改革的重要任务之一。