在大型电力系统中存在有自生的甚低频系统振荡。
In large interconnected power system, there have been spontaneous system oscillations at very low frequencies.
稳定控制已经在大型电力系统中得到了广泛的应用。
Stability control has been widely used in large power system.
本文介绍了蒸汽调速器在大型电力系统的非线性鲁棒控制理论。
The paper introduces the nonlinear robust control theory into the steam governor control in large scale power system.
对大型电力系统采用动态等值可以大大降低计算量，并能突出主要特征。
Dynamic equivalents are used to reduce the computing effort and manifest the principal characteristics of power systems.
一个大型电力系统最小二乘方准则的状态估计，由于其阶数很高而出现病态倾向。
When the least square criterion is applied to the state estimation of a large scale power system, high order of the equation will make it ill-conditioned.
通过对大型电力系统进行试算，表明该算法能有效地提高电力系统潮流计算的速度。
Test results with large power systems are presented to show that the proposed algorithm can effectively speed up power flow calculations.
面向对象编程是确保大型电力系统分析和应用软件易于维护、升级和移植的有效方法。
Object Oriented Programming (OOP) technology makes the maintenance, upgrading and transplant of analysis and application software for large electric power system easier.
基于大型电力系统分析软件NETOMAC，提出了机电暂态和电磁暂态混合时域仿真法。
A hybrid time-domain simulation method integrating electromagnetic transient simulation and electromechanical transient simulation based on large power system analysis software NETOMAC is proposed.
相对于大型电力系统，大型钢铁企业供电系统具有明显不同的特点，对其稳定控制的研究相对较少。
Comparing with the large power system, power supply system of large companies has significantly different characteristics, and there has been relatively little research on its stability control.
北美东、西部两个特大型和超大型电力系统从多方面都和中国未来全国电力系统相近，故其经验和教训皆具参考价值。
Two extra and ultra power system in the western and eastern parts of North America are similar to future China national power system, so their experience and lessons are more useful to us.
这一工具可以用来检查多重复杂故障对于大型电力系统的非线性影响，还可用来检验严重故障下系统静态潮流解的存在性。
This proposed tool is designed to investigate the nonlinear effects of enforcing a multiple compound contingency in a large-scale power system.
本论文致力于一种适用于大型电力系统的电压静态稳定分析软件的研制，并介绍了其采用的算法、结构和功能，以及实际应用情况。
This dissertation is working for developing software using for steady-state voltage stability of power system and introduces its methods, structure, function and application to SiChuan power system.
由于重型工业企业及大型用电设备的不断增多，对电网形成了越来越强烈的冲击负荷，严重影响电力系统的稳定性。
Because of development of heavy industry and increase of large power equipment. more intensive percussive load is formed in power network and influences stability of power system seriously.
大型风电场的并网对电力系统的优化运行提出了新的挑战。
Large wind farms connected to power grid bring new challenges to optimal operation of power systems.
对大型风电场接入后的电力系统暂态稳定性进行了研究。
Impact of large scale wind farm integration on power system transient stability is studied in this paper.
目前，正在大型钢铁企业、电力系统正常运行，为各类用户进行电能质量的监测提供了强有力的工具。
As an effective way to detect power quality, the monitoring instrument is working well in many large steel enterprises and power departments.
这些大型、复杂、相互联网的电力系统必须采用先进的计算机设施来可靠、安全而又经济地满足负荷的需求。
These large, complex, interconnected power systems must utilize state-of-the-art computer facilities to meet the load demand reliably, safely, and economically.
电力系统恢复过程是围绕着大型机组的恢复运行来进行的。
The restoration of power system is accompanied by that of the large-scale of generating units.
非同期并列是大型汽轮发电机组常见的电力系统故障之一，对机组的安全运行甚为关键。
Out of Phase Shunting of large turbo generator sets is an often met with fault in power systems, which constitutes a vital factor effecting safe operation of the set.
本方法也适用于大型互联电力系统的无功校正安全分析。
The proposed method is also suitable for the security analysis of reactive power correction in large-scale interconnected power systems.
讨论了含梯级水电站的大型水火电力系统有功功率最优分配的数学模型，考虑了水电厂上、下游水位的变化、梯级水电厂间的水流时间延迟等因素。
In this paper, we discuss a mathematical mode for optimization of active power dispatch of large-scale hydro-thermal power systems with cascaded hydropower stations.
电机与电器的研究领域包括：电力系统中的大型发电机、电动机，有着广泛应用的中小型电机。
The research domain of electric machinery and electric equipment includes: The large dynamo in power system, electromotor, those who having wide application is medium or small electric machinery.
大型电力变压器作为电力系统的枢纽设备，其运行可靠性直接关系到电力系统的安全与稳定。
As the key apparatus in electric power system, the operating reliability of large power transformer has deep influences on security and stability of power systems.
大型超高压变压器的绝缘问题是电力系统中的重大课题。
The isolation for a giant super-high-voltage transformer is a paramountly important problem in the power system.
大型同步发电机的励磁系统参数对电力系统稳定研究起着重要的作用。
The excitation system parameters of large synchronous generator have great effects on modern power system stability studies.
现代电力系统发电厂容量很大，大型发电厂在系统中所占容量比例很高；
Power plant of modern power system has large capacity and the proportion of large-scale power plant is very big.
随着电力系统的飞速发展，DEH系统成为当今汽轮机特别是大型汽轮机必不可少的控制系统。
Along with the fast development of the power system, DEH becomes the essential control system for stream turbines, especially for large stream turbines.
本文针对当前电力系统中大型发变组保护中的变压器保护提出了一种基于电流突变量的保护新方案。
In order to protect transformers of the large generator-transformer unit in power systems, the paper puts forward a kind of new principle of transformer protection based on break-variable of current.
电力系统中的大型发电机和电动机的转子及轴的加工问题，始终是电机制造过程中的关键技术。
The processing problem related to the rotor and axis of the heavy generator or motor, which are used in electric power system, is always the most important point in motor manufacturing.
电力系统中的大型发电机和电动机的转子及轴的加工问题，始终是电机制造过程中的关键技术。
The processing problem related to the rotor and axis of the heavy generator or motor, which are used in electric power system, is always the most important point in motor manufacturing.
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