Research On Visualization Of Voltage State In Electric Power System

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.