电站热力系统故障智能诊断系统的功能结构及诊断模型

简要介绍了火电机组热力系统故障智能诊断系统的总体功能结构和诊断模型构成。结合某300 MW火电机组高压给水加热器系统故障诊断实例，详细阐述各模块的功能和实现方法。针对模型软件开发中的关键技术，详细论述了电站热力系统故障诊断中语义型和趋势型两种征兆的模糊数学表达及合成计算方法，该综合运用有利于提高故障诊断的及时性和诊断结果的可靠性；给出了模糊模式识别和人工神经网络两种故障智能诊断模型，讨论了两种模型的技术要点。给出了高压给水加热器系统具体诊断算例，验证了所述技术和方法的有效性。

CONSIDERATION OF INFORMATION SECURITY FOR ELECTRIC POWER INDUSTRY

With wide application of information and network technologies to electric power industry,inform ation system s have inevitably become open,interconnected and standardized.This greatly increases the dependency of electric power systems on information system s. Thus,m ore and m ore concerns are focused on information security issues in electric power industry. The paper firstly introduces the developm ents of inform ation system s for electric power industry,and then discusses the concepts and features.From viewpoints of the present computer system,information network,operation system and people's security consciousness,the paper analyzes the status of security risk and research of inform ation security for electric power industry and presents main research topics for the future.