110kV数字化变电站继电保护配置方案研究

发布时间：2018-11-10 18:40

【摘要】：当前数字化变电站领域呈现出快速发展的趋势,IEC61850标准实现了智能变电站全数字化继电保护的应用,数字化保护在硬件结构、配置方案和实现方式上与传统电磁型、微机型继电保护不同,因此研究数字化变电站下继电保护的配置方式具有一定的理论意义和实际应用价值。本文介绍了数字化变电站的概念,详述了IEC61850标准的制定、应用历程、内容、主要特点,分析了过程总线通信技术在数字化变电站的关键作用,对信息传输中所用的GOOSE模型进行介绍。对数字化变电站的继电保护的几个新的问题进行分析,具体包括电子式互感器的应用、采样同步问题、网络跳闸问题、保护的信息共享问题、运行维护及检修问题。提出了数字化变电站继电保护的常规模式构成方案和站域集中模式构成方案,对于常规构成模式下的数据同步、互操作、直采直跳、电子式互感器的可靠性这几个关键问题进行了探讨,指出常规保护配置方案为现场的继保人员所熟悉,但没有充分考虑智能化一次设备带来的变革,只是实现数字化变电站继电保护的一种过渡方案。对于站域集中模式构成方案,分析了其主后备保护原理,以110kV数字化变电站为例详细分析了站内元件主保护、后备保护的实现方法,以及边界元件的主保护、后备保护的实现方法。指出站域集中模式构成方案对继电保护进行了一次全面的改革,使得一套装置可以同时允许多套保护功能同时运行,便于全站信息集中共享和发生故障时对系统的分析,有利于得到一个综合全面的判断。对比了常规模式构成方案与站域集中模式的优缺点。以110kV虹星数字化变电站为例实际分析数字化变电站继电保护配置的应用实例情况。
[Abstract]:At present, the field of digital substation is developing rapidly. The IEC61850 standard realizes the application of full digital relay protection in intelligent substation. The digital protection is compared with the traditional electromagnetic protection in hardware structure, configuration scheme and realization mode. The microcomputer relay protection is different, so it has certain theoretical significance and practical application value to study the configuration mode of the relay protection under the digital substation. This paper introduces the concept of digital substation, describes the formulation, application course, content and main features of IEC61850 standard, and analyzes the key role of process bus communication technology in digital substation. The GOOSE model used in information transmission is introduced. This paper analyzes several new problems of relay protection in digital substation, including the application of electronic transformer, sampling synchronization, network tripping, information sharing of protection, operation, maintenance and maintenance. In this paper, the conventional mode constitution scheme of digital substation relay protection and the construction scheme of station domain centralized mode are put forward. For the data synchronization, interoperation, direct-mining straight jump under the conventional configuration mode, The reliability of electronic transformer is discussed in this paper. It is pointed out that the routine protection configuration scheme is familiar to the relay personnel in the field, but the change brought by the intelligent primary equipment is not fully considered. It is only a transition scheme to realize digital substation relay protection. The principle of main backup protection is analyzed in this paper. Taking 110kV digital substation as an example, the main protection of station element, the realization method of backup protection and the main protection of boundary element are analyzed in detail. The realization method of backup protection. It is pointed out that a comprehensive reform of relay protection has been carried out in the scheme of centralized mode of station domain, which makes a set of devices allow multiple sets of protection functions to run simultaneously, thus facilitating the centralized sharing of information in the whole station and the analysis of the system in the event of failure. In favor of a comprehensive judgment. The advantages and disadvantages of the conventional scheme and the centralized mode are compared. Taking 110kV Hongxing digital substation as an example, the application of relay protection configuration in digital substation is analyzed.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM63;TM77

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