使用矩阵运算代替对称分量法的传统序网故障变换,以实现不对称短路故障计算,并给出常见故障对应的参数矩阵。
Calculation formulas are proposed with matrices calculation to deal with unsymmetrical faults and parameter matrices for various faults are listed.
到目前为止,所有这些研究都是针对静态最短路径问题以及不确定最短路径问题中具有模糊或随机参数的问题。
By far, all the studies are focused on the static shortest path problems and the shortest path problems with uncertain parameter such as fuzzy or random parameters.
以短路过程分析为基础,阐述了应用短路分流法保护时电路有关参数的选择原则;
Based on the analysis of short circuit process, the principle to select relevant parameters when applying short circuit shunting protection is introduced.
该方法不依赖于变压器铭牌上的短路电抗等参数,能实时监测变压器各侧漏电感的变化情况。
The principle is independent of short-circuit reactance and leakage inductance of each side can be effectively monitored in real time.
分析了磁短路环的工作原理,给出了磁短路环设计中的结构参数和材料的选用原则。
The thesis also analyses working principle of the magnetic short circuited ring, recommends structural parameters in magnetic short circuited ring and its selection principle.
计算远端短路故障电流时,必须考虑轨道暂态电气参数的变化。
Calculating Remote short circuit fault current, one must consider that the electrical parameters vary with current.
系统以较少的按键实现了参数设置,采用PWM技术对蓄电池进行充电管理,采取了负载过流、短路保护措施。
The system carries out parameter setting by fewer keys, adopts the PWM technique to carry on the charge management of storage battery. The protection measures of overload and short circuit are used.
计算书主要是对设计中的参数、短路电流及保护的整定值进行计算。
Calculated book is the parameter, short-circuit current and protective to worth surely to carry out calculation.
本文研究具有模糊参数的最短路径问题。
This paper is to study the shortest path problem with fuzzy parameter.
进行了简单的实例分析,该方法已应用在地区电网继电保护整定计算中,由实际电网参数库生成了整定所需的短路计算数据。
The method is applied in relaying protection calculation, in which the data for short current calculation are generated from actual power network database.
SLIM相对旋转异步电机(RIM)存在气隙大、边缘效应等,若采用RIM开路和短路试验方法,会给参数测量带来较大误差。
The SLIM parameters have clear errors to the real values on the base of the RIM parameter measurement method because there are larger air gap and edge effect.
短路电流裕量来选择合适的电路参数。
This paper also discusses how to select the appropriate circuit parameters according to short-circuit current margin.
针对不确定网络,研究具有随机参数的最短路径问题,采用随机数表示路径权值的不确定性,建立有约束的期望最短路模型。
Aiming at the uncertain networks, the shortest path problem with stochastic parameters is studied and the expected value model with constraints is constructed.
对该模型提出两种求解方法,一是基于三相短路容量思想的等值参数估计,计算速度快,但精度不高;
Two Solutions to the model equivalent parameter estimation are proposed, one based on the three-phase short-circuit capacity, this method works with good computational speed, but accuracy is not high;
为了分析短路过渡电弧的焊接过程和探讨电弧能量对焊接稳定性的影响,设计了短路过渡电弧电参数检测系统。
A arc parameter-measuring system was developed to analyze the process of short-circuiting arc welding and the effect of arc energy on the welding stability.
分析了高速CO2焊接过程中短路过渡参数对焊缝成形质量的影响。
The effects of the short-circuiting transfer parameters on weld formation quality in high speed CO2 welding process were analyzed.
本文提出了R型函数的概念及构造R型函数的规则,给出了求解开路阻抗或短路导纳参数的一般方法。
The concept oi R-type function and it's construction rules are presented. The general method solving the parameters of the open-circuit impedances or short-circuit admittances is also given.
阐明了如何使用无触点开关来防止电器线路及灯具等短路产生的火花,并给出了实验和实用参数。
It expounds how to use non-contact switch to stop the short circuit of the electric apparatus and lamp circuits etc. from sparking, and shows experimental and practical parameters.
精密线绕电位器的线性精度、函数符合度、匝间短路等项技术指标的优劣,直接影响到它在自控系统和仪器仪表中的应用,需要在生产过程中进行精确的参数测试。
The performances of linearity, function conformance, and short circuit between turns have the direct effect on the applications of the potentiometer in automatic control and instrument systems.
根据负荷电压和短路电流可知电池瞬间欧姆电阻,从而判断电池装配过程是否正常;三参数与电池容量均无明确关系。
Load voltage and short circuit current can be used to determine the batterys instantaneous ohm internal resistance and to judge whether the course of assembling batteries was normal.
根据华东电网短路电流水平的分析结论,对串联电抗器参数设计和安装地点进行了初步分析。
According to the analytical conclusion on the short-circuit current level of the East China Power Grid, the design of parameters...
根据新实施标准对隔爆型干式变压器性能参数进行调整,对其变压器的短路阻抗进行了理论分析和计算,并给出了矿用隔爆型干式变压器的短路阻抗值。
This paper analyzes the require of distribution transformer short impedance in national standard and puts forward a method to test the capacity of transformer with steady impedance voltage.
根据新实施标准对隔爆型干式变压器性能参数进行调整,对其变压器的短路阻抗进行了理论分析和计算,并给出了矿用隔爆型干式变压器的短路阻抗值。
This paper analyzes the require of distribution transformer short impedance in national standard and puts forward a method to test the capacity of transformer with steady impedance voltage.
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