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基于IEC 61850和MMS的网络化电力远动通信的研究

Research on Networked Telecontrol Communication Based on IEC 61850 and MMS

【作者】 王德文

【导师】 朱永利;

【作者基本信息】 华北电力大学(河北) , 电力系统及其自动化, 2009, 博士

【摘要】 为了突破电力远动系统的传统体系结构和通信模式,解决困扰电力远动通信领域多年的通信速率低、设备互操作性差及配置维护困难等问题,本文研究广域以太网、抽象的信息与服务模型、实时数据交换以及设备的描述与配置等问题,将IEC 61850、制造报文规范(MMS)与广域以太网同时应用于电力远动通信,这样变电站内部、变电站到控制中心都采用IEC 61850、MMS与以太网作为唯一的通信标准、协议与平台。为了保障不同厂商设备的互操作,本文研究IEC 61850的公共数据类、数据类、数据集、报告与操作前选择控制等模型,提出基于IEC 61850的电力远动通信建模方法,建立电力远动通信的逻辑设备、逻辑节点以及通信服务模型。通过所构建的实验平台,进行互操作和功能测试,验证模型的正确性。为了满足电力远动实时数据快速交换的需要,本文研究抽象通信服务接口(ACSI)与MMS的映射、OSI协议栈、抽象语法标记(ASN.1)、ASN.1 BER编解码、MMS协议机与MMS应用程序接口等关键问题,提出基于ACSI与MMS的电力远动实时数据交换方法,并自主研发面向IEC 61850应用的MMS实时通信协议,便于ACSI到MMS的映射,提高IEC 61850系统的开发效率。为了实现智能电子设备(IED)的统一配置与管理,研究变电站配置描述语言(SCL)的对象模型与文档结构、基于SCL与可扩展矢量图形(SVG)的变电站拓扑图形表示、SCL与公共信息模型(CIM)的协调与转换等问题,提出基于SCL/SVG/CIM的设备远程配置方法。该方法采用与电力远动实时通信相同的IP广域网络,通过传送统一的SCL配置描述文档,在控制中心对常规IED与IEC 61850 IED进行网络化的远程配置,并能对CIM模型库及SVG图形库进行更新。针对常规IED与IEC 61850 IED的互联和互通问题,本文研究基于IEC 61850/MMS通信网关的远动通信方法,设计IEC 61850/MMS通信网关的软件结构,提出IEC 60870-5、CDT与IEC 61850之间的协议转换方法,解决现有远动系统到基于IEC 61850/MMS的新型远动系统的平稳过渡这一难题。基于上述研究成果开发的基于IEC 61850/MMS的新型网络化电力远动系统,首次通过在某地区电网进行的工业现场试验,验证相关理论研究成果的正确性和实现方案的可行性。

【Abstract】 In order to break through traditional power telecontrol architecture and communication model, and to solve the problem of low communciation rate, configuration and interoperability difficulty among different electric power equipments which worry the power telecontrol communication for a long time, Ethernet WAN, abstract information and service model, real-time data exchange and configuration description of devices are researched, and IEC 61850, Manufacturing Message Specification (MMS) and Ethernet WAN are simultaneously used in power telecontrol communication. Thus either in substation or from it to the control center, IEC 61850, MMS and Ethernet is used as the sole communication standard, protocol and platform.To ensure interoperability among different vendor’s devices, IEC 61850 model, such as common data class, data class, data set, report and select before operate control are further studied. Moreover, a modeling method of power telecontrol communication based on IEC 61850 is proposed, and logical device, logical node and communication service model based on the above method are established. In addition, adopting the experiment platform, the interoperability and function tests prove the feasibility of the proposed models.To better satisfy practical needs for real-time data exchange of power telecontrol system, through studying the mapping between Abstract Communication Service Interface (ACSI) and MMS, OSI protocol stack, ASN.1, BER encoder/decoder, MMS protocol machine and MMS application interface, a real-time data exchange method for power telecontrol system based on ACSI and MMS is proposed, and the MMS real-time communication protocol for power telecontrol and IEC 61850 is independently developed which is easy to map ACSI to MMS, and then to improve the development efficiency of IEC 61850 system.To implement unified configuration and management for Intelligent Electronic Device(IED), object model and document structure of Substation Configuration Description Language(SCL), SCL and Scalable Vector Graphics(SVG) based graphical topology display for substation, and harmonization of SCL and Common Information Models(CIM) are further researched, and a SCL/SVG/CIM based remote device configuration method is proposed. In this method, the uniform SCL configuration description document is transmitted by IP WAN which is the same as power telecontrol real-time communication system, the remote conventional IED and IEC 61850 IED can be configured through network in control center, and CIM model and SVG graph database can be updated at the same time.Aiming at the interconnection and interworking problems between IEC 61850 IED and traditional device, the IEC 61850/MMS communication gateway based power telecontrol communication method is presented, the software architecture of IEC 61850/MMS communication gateway is designed, and the method of mapping between IEC 60870-5, CDT and IEC 61850 is proposed. As thus, the difficulty of smooth transition from the existing telecontrol system to the IEC 61850/MMS based system is solved. The new IEC 61850/MMS based power telecontrol system developed according to above studies, firstly gone through industrial field-testing carried in a practical subtransmission network, and the validity and feasibility of the proposed models and methods have been proven.

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