A power distributed computing system model based on services-oriented architecture

Process communication based power distributed computing model satisfies the demand on real time monitoring and analysis for the economical operation of power grid based on power distributed computation methods, but there are some problems on complexity in common basic functions development and lack of system extendibility. An extendable services-oriented power distributed computation system model is designed and implemented. Software design patterns are applied to design low coupling and extendable system framework. Windows Communication Foundation (WCF) technology is used to implement the services-oriented distributed data communication functions. Windows Workflow Foundation (WWF) technology is used to design the business logic of power distributed computation visually. Data integration functions are implemented by combining the ADO.NET technology. The services-oriented system architecture enhances the integration ability and extendibility. The use of WCF and WWF technology reduces the complexity of the system development.     

基于语音技术的分布式光伏交互查询技术

在我国大力发展新能源的过程中,分布式光伏因其具有环境友好、地域局限性小、投资少等优点受到广泛重视。但分布式光伏的运行数据分布在各自不同的系统中,在接入电网运行时对调度人员的数据工作带来极大的困难。利用语音技术可以进行语音识别与语言解析、数据搜索与输出等,实现更高效快捷的获取数据,且通过多种呈现方式,为电网运行计算提供全面的数据支持。     

实时网络通信在分布式监控系统中的实现

探讨在实时多任务系统ＡＭＸ环境下，由多台工业微机构成局域网络，开发分布式监控系统时如何实现网络的实时通信。提出了需解决的问题及实现方法，该方法同样适合于其它分布式监控系统。     

动力分布式输配系统的零压差控制点分析

分析了动力分布式供热输配系统的零压差控制点的分类及运行调节、位置的影响因素,利用工程实例对不同位置的零压差控制点方案进行了模拟计算,对零压差控制点的选取进行了总结归纳。以期为以后动力分布式输配系统的工程设计提供一些参考,以利该技术的推广应用。     

应用官司河分布式水文模型模拟流域降雨-径流过程

由于地理要素（地形、气候、土壤、植被等）的空间异质性,森林的生态服务功能,尤其是涵养水源和保持水土的功能,也存在着空间分异。本文根据森林水文过程和森林水文生态功能的形成机理,建立了通用性较强的官司河分布式水文模型。官司河模型根据流域内部地理要素的空间异质性把流域分成一系列的单元和作用层,以单元和作用层为基本单位,连续计算每个单元和作用层的水文过程和水文要素变化,包括降雨输入、冠层截留、枯落物层吸水、入渗、蒸散、壤中流、地表径流等,进而得到流域水文的时空变化。用此模型模拟了四川绵阳官司河流域的降雨－径流过程,计算结果与观测结果基本吻合。     

基于AT89C52单片机的泵站现地监控单元设计

在分析泵站现地监控单元的基本功能、技术指标的基础上，讨论了基于AT89C52单片机的泵站现地监控单元硬件结构原理及其实现；阐述了软件设计要点；就行业内现场常用的循环码编码器（码盘），介绍了其译码方法；考虑到支持各种上位监控组态软件，重点讨论了MODBUS通讯协议的实现．最后，介绍了该仪器在泵站计算机监控系统建设中的应用．     

基于时域有限差分法的输电线路精

传统的故障分析法多采用集中参数模型，无法反映真实线路的分布参数特性。因而，当线路较长时，这些算法不再能满足实际工程应用的精度要求。本文采用分布参数模型，直接利用有限差分法求取线路波动方程的数值解，并利用在线路两侧实时同步采集的电压、电流数据结合此数值解推导出了一种有效的故障定位算法。数字仿真表明，有限差分算法能很好地反映线路的分布参数特性，即使在超长线路条件下，亦可获得高精度的定位结果。     

The Optical Signal Processing of Distributed Fiber Optical Force Sensors

For the distributed fiber optical sen sor based on the principle of mede-coupling of polarization-maintaining fiber and the theory of partial coherence of quasi-monochromatic light,it is of great importance to process the weak optical signal from the sensing fiber.The characteristics of the optical slgnal was analyzed and suggestions were given for medified Mach-Zehnder interfer-ometer,which in cludes an acoustooptical medulator and a polarized-beam splitter to realize the het-erodyne in terferen ce. The method not only eliminates the influences of light source fluctuation and background light,but decreases the loss of the signal ptocessing,and improves S/N ratio.The experi-ment results coincide well with the analysis.     

Application of Multi-agent Technology in Power System

Modern power system is a complex, open and distributed system. Multi-agent is a new technology of distributed artificial intelligence. It is easy to make the distributed systems run well. The basic principles and the applicable scopes of Multi-agent are described in this paper. Especially the various applications of Multi-agent in power system are introduced, such as security-defense system, secondary voltage control, electricity markets, EMS and power plant. The further studying works of Multi-agent are schemed. The the studying ways in control system, adaptive ability and foreground on wide control fields of power system. applications of the other fields in power system are described, intelligence, communications are pointed out and especially the foreground on wide control fields of power system.     

Intrusion Detection Technology in Ad Hoc Network

With the rapid development of wireless network and mobile computing,the security of network becomes more important.As one of wireless mobile network,mobile Ad hoc network has new vulnerabilities that do not exist in a fixed wired network,and is susceptible to attacks.This paper introduces some methods which used in intrusion detection system and provides a new model of system based on multi-layer integrated distributed technology,especially recommend the protocol analyzing method in this system.