On the other hand , the wavelet arithmetic can be realized through dsp , so it is widely used in the power system analysis . first , the paper introduces the standard about power quality and classifies the power quality variation problems 本文首先简单介绍了电能质量的标准和电能质量变化问题的分类,在总结了各种的电能质量分析方法的基础上,提出了新的电能质量分析方法? ?小波分析。
The software pss / e is adapted to the power flow and dynamic anlysis of fujian power system , so it should be widely used . the tested models and parameters with dynamic signal analyzer hp35670 can be used to the modeling with pss / e and power system analysis 使用动态信号分析仪hp35670a ,对福建省电力系统大型水、火电机组励磁系统进行现场测试,所建立的模型和参数可以在pss e中建模并用于电力系统分析。
Steering the development direction of power system analysis and control , presiding over theory research and engineering consulting on power system analysis and control , providing technical support for the development of power system analysis software package ( psasp ) 把握现代电力系统分析与控制领域的发展方向,主持电力系统分析与控制领域的理论研究、工程咨询等,为电力系统分析商用软件开发提供技术支撑。
Introduction of the angle measurement technology , comparison of kinds of analyses for eletromechanical oscillation , application of prony method to the data obtained through wide - area measurement in power system analyses are studied in the paper . the main studying achievement of this paper are listed as following : 1 . the paper presents introduction , comparison and existent disadvantage of some method for low frequency oscillation 本文简要介绍了基于gps的功角测量技术,围绕着使用prony方法提取电力系统低频振荡特征根这个中心,分析了该方法对测量数据的要求及其在电力系统稳定器设计中的应用等理论问题,最后结合实际工程项目设计和编写了实时数据服务器程序。
With the development of the electrical power enterprise and computer technology , it is important to design a highly efficient , better maintainable and graphic interface based software package for power system analysis and computing in the paper , the author put forward a kind of new sensitivity analytical method which take into account load characteristic to fix on the weak bus , and with example to prove the exactness of the algorithm ; developed the visual electrical power system analysis and computing and graphic sporting system , the software package was developed by using the idea of object oriented programming , the method of class ' s inheritance , polymorphism and virtual function , and set up equipment - chart element - the interreaction between class this make it easy to expand , maintain and replant 随着电力事业和计算机技术的发展,研制高效率、可维护性强、具有良好用户界面的图形化计算分析软件成为电力系统分析计算研究的重要任务之一。本文提出了一种计及负荷特性的灵敏度分析方法来对薄弱母线进行确定,并用算例验证了算法的正确性;开发了图形化的电力系统分析计算软件和图形支持系统,该软件完全采用面向对象的设计方法,充分利用了类的继承、多态性质和虚函数的方法,建立起设备图元类之间的相互关系,使软件具有高度的开放性、可维护性、可移植性。
The auhor develops the user - defined dynamic phasor models of all the above devices with the user - defined function of power system analysis software package ( psasp ) of epri , china , including traditional power components such as generator , transmission line , transformef , fixed series capacitor ( fsc ) , grounding reactor , etc . , and new type power devices including thyristors like tcsc , hvdc , svc and smcom , thus realizes time - domain simulation for sso large signal stability analysis and realizes sso small signal stability analysis further through the linearization platform of psasp 作者利用电力系统分析综合程序( psasp )的自定义建模功能,建立了电力系统基本元件(如发电机、输电线、电容器、接地电抗器等)及含晶闸管等电力电子元件的新型电力系统装置( tcsc 、 svc 、 hvdc及statcom )的动态相量自定义模型,从而通过psasp实现了sso问题的大干扰稳定的时域仿真计算,并进而通过该程序的小干扰线性化平台实现了sso问题的小干扰稳定分析。
China power industry has been stepping into the stage of nation - wide interconnection . with the increasing demands for security , stability , and economy , the requirement on the level of power system analysis and control is also enhanced . some intelligent analysis methods and control strategies are studied in the dissertation , among them , data mining based small signal stability assessment and genetic algorithm based multiple psss design are described in detail 我国电力系统已步入全国联网的新阶段,随着对电能供应的安全性与经济性要求的日益提高,对电力系统稳定分析与控制的要求也不断提高,论文对智能化分析与控制进行了探讨,并详细介绍了基于数据挖掘的在线小信号稳定分析及基于遗传算法的多机pss设计等新方法。
Applying the system identification technique in the test of excitaion system , the excitation system models of a hydro unit and a thermal unit are established with pss / e . with those models , power system analysis is also accomplished . the simulation results are compared with the record waveforms 将系统辨识技术应用于励磁系统参数辨识现场试验,建立了一个大型火电厂和一个大型水电厂的pss e的实测的励磁系统模型,进行了系统分析,并和实际故障录波进行了对比,还对风电场接入系统作了初步的分析。
The elements of the reduced - jacobian matrix are functions of some parameters of the system . for example , effective short ratio , power base ratio , coupling impedance and load flow of the system . for single - infeed hvdc system with a parallel ac line , computer simulations using power system analysis software package ( psasp ) were performed 用一种简单的方法可以求得降阶雅可比矩阵,由于降阶雅可比矩阵的元素都是交直流混合系统中一些参数的代数函数,如有效短路比、功率基准比、连接阻抗和系统潮流等,因此,矩阵的特征值也与这些参数相关。
A example of ieee6 - bus system is tested by using new power system analysis toolbox ( psat ) , the results obtained show that the proposed technique is able to improve electric power system security while yielding better market benefit through increased total transaction amount and improved locational marginal prices 通过一个ieee6节点的实例在功能强大的新型电力系统分析软件工具psat中进行验证,结果表明采用所描述的方法既可提高电力系统的安全性,同时还由于电能交易总额的增加和节点边际价格的调整而获得更大的市场效益。