电力系统元件可靠性数据的统计分析对电力工业有重要意义。
Statistical analysis of reliability data for power system units is valuable for electric industry.
建立适当的电力系统元件谐波模型是电力系统谐波分析的基础。
It is the basis of power system harmonic analysis to model power system components at harmonic frequencies.
该方法可应用于任意复杂的故障场景和任意细节的电力系统元件模型。
This scheme is applicable to any complex fault scenarios and any detail element models of power system.
文中针对上述问题，提出了电力系统元件的效用风险指标的基本概念和计算方法。
This paper proposes the basic concept along with its calculating method of the utility risk index of power systems to solve the problem mentioned above.
继电保护中隐性故障以不正确的和不期望的方式切除电力系统元件造成电力系统大面积扰动。
It was found that hidden failures in protection schemes caused the disconnection of power system elements in an incorrect and undesirable manner contributing to the disturbance degradation.
采用常规的电力系统元件模型和参数进行数值仿真所得的频率变化曲线与实测曲线偏差较大。
As for the numerical simulation by traditional power system component models and parameters, the obtained dynamic frequency curves evidently diverge from measured ones.
传统的电力系统可靠性指标反映了电力系统元件或网络的可用度，但是没有反映出其经济成分。
Traditional reliability index only reflects the availability of equipments or power networks in power systems, excluding its economic factors.
本文按国际通常采用的方法对现有的数据进行了收集、整理和统计分析，给出了我国电力系统元件1995～ 1999五年的平均可靠性指标。
This paper uses the world wide accepted method to collect and analyze the present available data. Average indices of power system units in China during 1995-1999 were provided.
开关电器是整个电力系统工作可靠性的关键元件。
The switch apparatus is a key element for total electric power system in reliability.
一类是电力系统的典型元件，如发电机、变压器、输电线路。
One is the typical power system components, such as generator, transformer and transmission lines.
阐述了其基本概念、特点和实现方法，讨论了将COM技术应用于电力系统数字仿真的元件建模中。
The concept, characteristics and realization of COM are introduced, and its application in the element modeling for the digital simulation of power system is discussed.
输电线是电力系统的重要元件之一。
Transmission line is one of the important components in power system.
同时，作为电力系统数学建模的重要元件，负荷建模的准确性对研究结果的正确性产生重要的影响。
At the same time, as the power system is the important component of mathematical modeling, load modeling accuracy for the correctness of the research results have important influence.
本文研究提出了一种适用于超高压电力系统的新型选相元件。
In this paper, a new type of phase selection element used for EHV power system is studied and suggested.
FACTS元件由于其快速灵活的调节能力，在电力系统的许多应用领域都受到了重视，为抑制SSR提供了有力的工具。
As the fast and flexible adjustment ability of FACTS equipment, many application fields of power system have pay more attention to it, and it provides useful tools to restrain SSR.
目前大多数电力系统仿真分析工具缺少对继电保护模型的系统化描述，无法真实完全的反映继电保护元件的控制规律。
Most of power system's simulation tools have not the systematic model of relay system and can not response the control rules of relay system truly and completely.
导出了电力系统中的支路元件和节点元件开断模拟的补偿公式。
The compensation formulae for outage simulation of both branch and node components in the power system are derived.
最后，结合新技术在电力系统中的应用，探讨了故障选相元件进一步的研究方向和发展前景。
In the end, combined with new technology applications in power system, the research orientation and further development of fault phase selector are discussed.
电力系统混合仿真对常规电力系统进行机电暂态仿真，对重点关注的局部网络或者特定元件采用电磁暂态仿真。
In power system hybrid simulation, the mutual influence between the electromechanical transient process and electromagnetic transient process can be synthetically considered.
三相负荷不平衡以及系统元件三相参数不对称都会引起电力系统三相不平衡。
The definition and national standard of three-phase unbalance in power system were expatiated.
可疑故障元件库和故障元件连接图的应用使得该模型能够快速适应电力系统运行方式的变化。
In application of possible fault components set and fault components connection diagram, the model can quickly adapt to variations of power system operating modes.
同时，FACTS元件的加入，也对电力系统提出了新的要求和挑战。
Meanwhile, new demand and challenge come with the use of FACTS devices.
电接触广泛存在于电子和电力系统中，元件之间、电路之间、设备之间乃至元件内部之间都需要可靠的电子连接。
There are numerous electric contacts in electronics, electric-power and automatic control system. Their capability affects the reliability of electric and electronic devices directly.
随着电力系统中各种大型设备和电力电子装置等非线性元件的应用越来越多，电能质量问题日益严重。
With the increasing use of big power electronic equipments and the non-linear loads in power system, the power quality problem is becoming more and more severe.
当电力系统发生故障时，系统中的保护装置动作，将故障线路或元件切除。
When a fault occurs in power system, the relevant relay will operate and send out trip order to clear the faulted transmission line or other parts.
当电力系统发生故障时，系统中的保护装置动作，将故障线路或元件切除。
When a fault occurs in power system, the relevant relay will operate and send out trip order to clear the faulted transmission line or other parts.
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