The fast development of the electric power industry make the power system more and more complex , and need higher level on the management of the power grid 电力工业的飞速发展，大大增加了电力系统运行和管理的复杂性，对电网的运行管理水平提出了更高的要求。
The operation data in recent years reveals that the repeatedly accidents which caused by lightning striking 35kv lines heavily affected the safety of our manufacture 据近几年的运行数据表明雷击35kv线路造成的电力系统运行事故屡有发生，严重影响我局的安全生产。
The existing calculation methods have some disadvantages , which ca n ' t satisfy the need of the dynamical secure control and system transient stability analysis 但现有计算方法中存在着计算速度慢，计算结果可信度值得斟酌等问题，不能满足电力系统运行、动态安全控制和维持系统暂态稳定的需要。
Transient stability analysis and control is one of the most austere problems in power system operation . although many efforts have been taken to study the problem and plentiful and substantial results have been achieved in many respects 暂态稳定分析与控制是电力系统运行中的重要问题之一,目前在这方面已经进行了较为深入的研究,并且取得了丰硕的研究成果。
With the development of our national electric industry , the management of electrified wire netting is more and more modernized . people pay more attention to the study on electric system load forecasting than ever 随着我国电力事业的发展,电网的管理日趋现代化,电力系统负荷预测问题的研究也越来越引起人们的注意,现已成为现代电力系统运行研究中的重要课题之一。
Hydro - turbine governing system , with responsibility for regulating the frequency to meet the requisition of power system , is one of the most important control systems that influence operating quality and security of power system 水轮机调节系统是影响电力系统运行质量和安全的最重要的控制系统之一。它主要负责电能有功(频率)的调节,以满足电力系统对电能频率的要求。
The electric utility industry is going through the phase of restructuring towards evolving into a competitive market . in order to facility that transformation , the access to the capability of the network is provided on a non - discriminatory basis 这不仅给电力系统带来生产管理和经营观念上的大变革，而且对电力系统运行的各个环节都提出了很多亟待解决的、新的技术问题。
Recently , with the development of the domestic electric power system , the scale of electric power system expands greatly , become more and more huge and complex . thus , higher dependability and efficiency of electric power are required 近年来,我国加快了电网建设发展步伐,电力系统规模将进一步扩大、越来越庞大复杂,这对加强电力系统运行的可靠性,提高电力系统运行效率提出了更高的要求。
Equipment maintenance is a very important operation of power system . the scientific , rational and practical maintenance schedules are helpful to improve the stability of the power system and the modernization level and profit efficiency of the enterprises 电网设备检修是电力系统运行中一项十分重要的内容，科学、合理、实用的检修计划有利于提高电力系统运行的可靠性，能够提高企业的现代化管理水平和效益。
Equipment maintenance is a very import part of power system operation . the scientific , rational and practical maintenance schedules are helpful to improve the stability of the power system operation and improve the modernization level and profit efficiency of the enterprises 电网设备检修是电力系统运行中一项十分重要的内容，科学、合理、实用的检修计划有利于提高电力系统运行的可靠性，能够提高企业的现代化管理水平和效益。
