【作者】 刘巍；

【导师】 李卫东；

【作者基本信息】 大连理工大学 ， 电机与电器， 2005， 硕士

【摘要】 可视化技术是八十年代后期随着计算机技术的迅速发展而出现的一门新兴技术。它的主要目的是更加有效地处理和分析越来越多的科学和工程数据,为科研人员和工程师提供一个探索和研究物理现象的先进工具,以提高科学研究和工程设计的效率,促进科学和工程技术的发展与应用。 电力系统在国民经济中具有举足轻重的地位,各个国家对电力系统问题都十分重视。这其中,系统的稳定问题是最受关注的问题之一。目前,科研人员在这方面已进行了大量的研究,也取得了一定的成果。但是,电压失稳问题异常复杂,电力系统电压监控的手段还比较落后,因此,对电力系统电压运行状态的可视化研究势在必行。 由于可视化技术能够利用计算机强大的计算和图形能力,迅速处理大量数据,并以直观可视的方式表现出来,所以有利于人们深入洞察实验或仿真数据,捕捉它们之间的内在关系,大大提高对电力系统运行状态的理解。 本文以电力系统电压稳定问题为依托对可视化问题开展研究,提出了以认知学为基础的电力系统电压运行状态的可视化新概念。首先,本文对认知学理论进行探讨,对人类认知事物的过程加以认识。然后以认知学为基础,从人类认知过程的感知——分析——决策这三个环节入手,分别对电力系统可视化加以阐述。本文的观点是:在感知这一环节,应将电压状态显示与地理信息系统(Geographic Information System,GIS)相结合,为调度员提供更直观的系统信息;然后引入趋势预测、离线分析等方法使电力系统电压监控体系本身就具有分析问题和进行决策的能力;最后,提出多屏显示这一新概念,满足了基于认知学的电力系统可视化多功能模块的需要。 研究表明,与认知学相结合的电力系统可视化更加人性化、智能化,它为调度员及时、准确地监控全网的信息资源,进行电网安全维护提供了便利。更多还原

【Abstract】 The visualization technology appeared to be a new technology with the rapid development of the computer technic in later 1980’s. Its main goal is to deal with and analyze the more and more scientific and project data more effectively to provide an advanced tool of exploring and investigating physical phenomenon for the researchers and engineers, and as well as, to enhance the efficiency of scientific research and engineering design. Moreover, it can improve the development and the application of science and engineering technology.The power system has a very important position in the national economy, and every country pays a great attentions on this issue. Among them, the power stability is one of the most concerned problems. At present, the researchers have carried out a lot of investigations and have already gained some achievements. But only investigating the cause of voltage unstability can’t meet the needs of maintaining the realistic power network security. Due to the sophisticated reason for voltage unstability, and once it happens, it will bring the tremendous loss to power system in very short time. Additionally, the way of supervising the voltage is so unadvanced that it is more difficult for the dispatchers to reflect quickly and correctly. So the research on the visualization of voltage state in power system is imperative.The visualization technology can make use of the strong capabilities of calculation and graphic, deal with a great deal of data very quickly and indicate all the information in a intuitionistic way. So it is advantageous for people to deeply observe the experiments or the simulation data, catch their internal relationship and greatly improve the understandings of the function state in power system.Integrated with the visualization technology and the computer technology, this paper canys out a deep investigation of voltage function state visualization in power system and come out with a new visualization concept based on cognition. Speaking of this issue in detail, it should be expatiated on from the three aspects about the cognition knowledge, including perception, analysis and strategy. Firstly, the indication of voltage state is connected with the GIS (Geographic Information System) for the more intuitionistic on-line information provided for the dispatchers. Then, the introductions of trend prediction and off-line analysis provide the advantages of analyzing and resolving the voltage unstability problem and promote the intellectualized level of the voltage supervision in power system. At last, multi-screen display isapplied for the dispatchers to supervise the whole network’s information resources, and, of course, it provides convenience for the voltage security maintenance.更多还原