英语翻译POWER system stability is the property of a power system

英语翻译
POWER system stability is the property of a power system
which enables it to remain in a state of equilibrium under
normal operating conditions and to regain an acceptable state
of equilibrium after a disturbance.All around the world power
system stability margins can be observed decreasing.Among
the many reasons for this,we point out three main ones.
• The inhibition of further transmission or generation constructions
by economical and environmental restrictions.
As a consequence,power systems must be operated with
smaller security margins [1],[2].
• The restructuring of the electric power industry.The restructuring
processes decrease the stability margins due to
the fact that power systems are not operated in a cooperative
way anymore [3].
• The multiplication of pathological characteristics when
power system complexity increases.These include:large
scale oscillations originating from nonlinear phenomena,
frequency differences between weakly tied power system
areas,interactions with saturated devices,interactions
among power system controls,[2],[3].
Beyond a certain level,the decrease of power system stability
margins can lead to unacceptable operating conditions and/or to
frequent power system collapses.One way to avoid these phenomena
i.e.,to increase power system stability margins,is to
control power systems more efficiently.
The state-of-the-art in power system stability controls,including
some recommendations for research and development,
are comprehensively described in [4]–[6],and further extended
in [7],[8].The availability of phasor measurement units was recently
exploited in [9] for the design of an improved stabilizing
control based on decentralized/hierarchical approach.Also,an
application of multi-agent systems to the development of a new
defense system able to assess power system vulnerability,monitor
hidden failures of protection devices,and provide adaptive
control actions to prevent catastrophic failures and cascading sequences
of events,is proposed in [10].
Most notably,in [4],[7],[10],[11] the need for an intelligent
and systematic learning method for power system controllers
so that they can learn and update their decision-making capability,
was identified.Given a large power system operating with
the aid of new control devices,advanced communications,and
computer hardware a learning to control approach emerges as
an attractive way to cope with increasing complexity in power
system stability control.In this paper we introduce a methodology
based on Reinforcement Learning (RL),a computational
approach to learn from interactions with a real power system or
its simulation model,as a framework that provides a systematic
approach to design power system stability control agents.
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电力系统的稳定性是电力系统属性使它保持在一个平衡状态,恢复正常的操作条件下的干扰后的一个可接受的平衡状态.世界各地的电力系统的稳定裕度可以观察到的减少.在众多的原因,指出了三种主要的.•进一步传输或代constructionsby经济和环境限制的抑制.因此,电力系统必须运行和安全空间[ 1 ],[ 2 ].•电力工业的结构调整.该restructuringprocesses减少稳定的利润,由于事实,电力系统不工作在一个cooperativeway了[ 3 ].•病理特征whenpower系统复杂性的增加,增殖.这些措施包括：大规模的振荡源于非线性现象,弱相关的功率systemareas频率之间的差异,用饱和设备的交互模式,电力系统控制,[ 2 ],[ 3 ].超过一定水平,电力系统stabilitymargins下降可导致不可接受的工作条件和/或tofrequent电力系统崩溃.为了避免这些phenomenai的一种方式.例如,提高电力系统的稳定裕度,是控制电力系统更有效.在电力系统稳定控制的现状,研究和开发方面的建议,综合–[ 4 ] [ 6 ]描述,并进一步extendedin [ 7 ],[ 8 ].相量测量单元的有效性进行recentlyexploited在[ 9 ]一种基于分散/分层方法的改进stabilizingcontrol设计.同时,多Agent系统的一个能够评估电力系统脆弱性的国防新系统的开发应用,monitorhidden故障保护装置,并防止灾难性故障,提供自适应控制行动和级联序列的事件,在[ 10 ]提出的.最值得注意的是,在[ 4 ],[ 7 ],[ 10 ],[ 11 ]一个intelligentand系统学习方法对电力系统controllersso,他们可以学习和更新自己的决策能力的需要,是确定的.给定一个大型电力系统的运行借助新的控制设备,先进的通信技术,计算机硬件的学习控制方法已成为有吸引力的方式来应对日益复杂的电力系统稳定控制.在本文中,我们介绍一种方法强化学习（RL）,一个computationalapproach从一个实际电力系统的仿真模型,学习或其相互作用,作为一个框架,设计了电力系统稳定控制剂提供了一个系统方法.