【作者】 黄大鹏；

【导师】 张炳达；

【作者基本信息】 天津大学 ， 电力系统及其自动化， 2004， 硕士

【摘要】 变电站的控制与信号系统是实现变电站安全、经济运行和操作管理的必不可少的重要组成部分，特别是对日常的运行控制来说，显得更加重要。实现对其的数字仿真，对于变电站的控制与信号系统的设计、各种保护的组合及功能测试，以及对变电站的培训仿真，都有着重要的意义。为了实现仿真的可视性、通用性和开放性，本文采用图形控件的思想绘制变电站控制与信号系统的图纸，创建了代表各种设备的图形控件，并在图形控件中引入热点敏感区的概念，使得图形控件能够准确地自动连接。通过依次分析图形控件的连接关系、设备的连接关系以及电气部件连接关系，最终建立起通用的变电站控制与信号系统的仿真模型。考虑到在所建的仿真模型中存在着大量的开关性电气部件以及一些相对独立的模块，文中采用了等效节点法、模块分割法和树梢消去法等方法对模型进行处理，减少了节点，缩小了方程矩阵的阶数，提高了仿真的速度。最后再采用局部调整的方法，克服了化简的结果受电气部件状态的影响而变得无效的现象，实现了变电站控制与信号系统的动态分析。对于系统中存在的智能型设备，本文采用了“输入—智能环节—输出”的建模方法，以完成与其他设备的连接。同时，为进一步提高仿真的速度，在分布式计算方面做了尝试，在制定相应的分布策略后，采用Socket技术，实现程序之间的通信。更多还原

【Abstract】 Substation’s control and signal system play an important role in the safe, economical running and operation management of the substation, especially for the daily running and control. The digital simulation for the system is really significant for the design of the substation, for the combinative optimization and testing of various protections, and even for the substation’s training simulation.To realize the visibility and commonality of the simulation, many graphical controls, which represent all kinds of actual devices, are constructed to plot the drawings of substation’s control and signal system. The sensitive areas of hotspots are used to enable the neighboring controls to connect together automatically and exactly. The connected relations of graphical controls, devices and electrical components are analyzed on the basis of the drawings, and as a result the common simulation model of the control and signal system for substation is established. Because of the fact that the model is made up of many self-governed modules and lots of on-off electrical components, such methods as equivalent-node, separate-module and treetop-elimination are applied to decrease the number of nodes and the dimensions of corresponding matrixes, and largely increase the speed of the simulation. The method of partial modification is adopted to prevent the simplification from being ineffective as the result of the varying states of on-off electrical components. Thus, the dynamic analysis of the substation’s control and signal system are obtained.The models of those intelligentized devices are constructed distinguishingly in this paper, in which import circuits and output circuits are put apart to communicate with other devices. Some attempts in distributed calculating have been made to further increase the speed of simulation. After the strategies of assignment being set down, the technology of socket is adopted to realize the communication among different programs.更多还原