榆林110kV变电站智能化改造中二次系统的研究

发布时间：2019-05-22 19:27

【摘要】：随着通信技术、光电技术、信息技术、网络技术和计算机技术的发展,智能化变电站应运而生。相比于传统综合自动化变电站,基于IEC61850规约的智能化变电站大大增强了站内设备的互操作性。另外,智能断路器和非常规互感器的使用也大大提高了变电站的智能化和数字化水平。随着我国智能电网的大力建设和发展,在建设智能化变电站的同时,部分已有的综合自动化变电站也需要进行智能化改造,以适应建设智能电网的需求。基于上述情况,本文首先分析了传统综自变电站架构和技术上的缺点和不足,研究了智能化变电站的技术特征、架构特征及其关键技术支持,从而突出了智能化变电站的相对优势。其次,本文对智能化改造进行了需求分析,对于变电站内不同的设备层、不同的功能和不同的网络,分别研究了其智能化改造需求和方案,并为后文进一步地研究榆林110kV万家墩变电站的具体改造方案作铺垫。最后,结合榆林110kV万家墩变电站的现有情况,本文对该站的二次系统进行了分析和研究,分析和研究的内容包括继电保护系统及安全自动装置的智能化改造、远动通信系统及对时系统的智能化改造、电能计量系统及五防系统的智能化改造和全站直流系统的智能化改造。基于这些分析和研究,本文确定了二次系统的智能化改造最终方案。该改造方案不仅基本可以实现万家墩变电站的智能化改造目标。而且,该方案满足智能电网安全、可靠、经济等运行性能的要求,并体现技术的先进性、架构的合理性、方案的创新性等。
[Abstract]:With the development of communication technology, optoelectronics technology, information technology, network technology and computer technology, intelligent substation emerges as the times require. Compared with the traditional integrated automation substation, the intelligent substation based on IEC61850 protocol greatly enhances the interoperability of the equipment in the station. In addition, the use of intelligent circuit breakers and unconventional transformers also greatly improves the intelligent and digital level of substations. With the construction and development of smart grid in our country, while building intelligent substation, some of the existing integrated automation substations also need to carry out intelligent transformation in order to meet the needs of smart grid construction. Based on the above situation, this paper first analyzes the shortcomings and shortcomings of the traditional integrated substation structure and technology, and studies the technical characteristics, architecture characteristics and key technical support of the intelligent substation. Thus, the relative advantages of intelligent substations are highlighted. Secondly, this paper analyzes the requirements of intelligent transformation, and studies the requirements and schemes of intelligent transformation for different equipment layers, different functions and different networks in substations. It also paves the way for the further study of the concrete transformation scheme of Yulin 110kV Wanjiadun Substation. Finally, combined with the existing situation of Yulin 110kV Wanjiadun Substation, this paper analyzes and studies the secondary system of the station, including the intelligent transformation of relay protection system and safety automatic device. The intelligent transformation of telecontrol communication system and timing system, the intelligent transformation of electric energy metering system and five defense system, and the intelligent transformation of DC system of the whole station. Based on these analysis and research, the final scheme of intelligent transformation of secondary system is determined in this paper. The transformation scheme can not only realize the intelligent transformation goal of Wanjiadun substation. Moreover, the scheme meets the requirements of security, reliability and economy of smart grid, and embodies the advanced nature of technology, the rationality of architecture, the innovation of the scheme and so on.
【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;TM76

【参考文献】