【作者】 李超；

【导师】 王文鼐；

【作者基本信息】 南京邮电大学 ， 电子与通信工程（专业学位）， 2015， 硕士

【摘要】 随着智能电网的建设,电力通信网在电力系统中的作用变得越来越重要,电力系统的稳定性愈发容易受到电力通信网故障的影响。虽然SDH传输网在公众通信网中的作用呈现下降趋势,但作为电力通信网的核心部分,其可靠性研究仍然是一个十分迫切的需求。在SDH传输网的可靠性研究中,大部分工作都是基于理论分析模型的,研究的结果与实际情况存在较大偏差。为了更好地评估SDH传输网的可靠性,需要利用仿真技术来模拟SDH传输网,以便开展与电力控制系统的联合仿真。本文结合“电力光传输网仿真设计与开发”课题,设计并实现了SDH传输网的仿真原型。论文主要研究内容如下:首先,论述了SDH传输网仿真的现状,提出了基于仿真软件GLASS/SSFNet的二次开发方案。给出了SDH传输网仿真在系统建模、业务保护和故障告警方面的技术需求,其中重点分析了SDH传输设备的内部逻辑和业务保护的运行机理。分析了GLASS/SSFNet的模块结构和对象类代码结构,包括SSF的仿真内核、DML的语法、SSFNet的设备实体模型与协议模型、GLASS的故障模型等。其次,提出了SDH传输网仿真的系统架构设计,包括业务传输功能和业务保护功能的设计。设计和开发了网元设备SNE类、电接口ENIC类、复用段适配器MSAdaptor类以及相关的DML语法,完成对业务传输功能仿真的实现。同时设计和开发了描述APS协议过程的APS类和描述APS协议消息的APSMessage类,完成对业务保护功能仿真的实现。最后,设计了功能验证的测试案例,包括业务环回过程测试、分插过程测试和APS过程跟踪测试三个具体场景,验证了业务传输与业务保护仿真方案的可行性和原型系统的有效性。更多还原

【Abstract】 With the construction of “Smart Power Grids”, the role of power communication network in power systems is becoming increasingly important, the stability of power system is increasingly affected by power communication network failure. As SDH transmission network is the core part of power communication network, the reliability of it is an important research topic. In order to assess the reliability of SDH transmission network, simulation of SDH transmission network is needed.This thesis focuses on the design and implementation of SDH transmission network simulation. The main contents are as follows.Firstly, the thesis discusses the status quo of SDH transmission network simulation and presents a system development program, which is based on the GLASS / SSFNet simulation software. Then,the thesis gives the needs of SDH transmission network simulation, including system modeling,service simulation, fault and alarm simulation. The thesis analyses the calculation structure and the underlying code structure of GLASS / SSFNet.Secondly, the thesis presents a system architecture design of SDH transmission network simulation, including service transportation function and service protection function. In order to implement service transportation function simulation, the class ENIC, class MSAdaptor and class SNE are developed. In order to implement service protection function simulation, the class APS and class APSMessage are developed.Finally, the thesis designs test cases for simulation function, including service loopback test,service add / drop test and APS process tracking test. The feasibility and effectiveness of SDH transmission network simulation are verified.更多还原