基于IEC61850智能变电站改扩建方案研究与实践

发布时间：2017-12-26 21:24

本文关键词：基于IEC61850智能变电站改扩建方案研究与实践　出处：《华北电力大学(北京)》2016年硕士论文　论文类型：学位论文

【摘要】：自国网公司2009年提出建设“坚强智能电网”以来,目前在国网系统内已建成各电压等级的新建、改扩建智能变电站1500余座。随着智能电网建设的快速推进,智能变电站已面临大量的检修的任务,同时也面临智能变电站扩建、改建等工作需求。智能变电站网络化的信息传输、设备间耦合度紧密、配置文件的应用使二次系统检修、扩建和改造过程中设备间安全隔离困难,安全措施抽象化、复杂化,这给智能变电站的检修、扩建和改造工作带来了极大的安全风险,增加了实施难度；尤其是变电站改、扩建过程中,站内配置文件的变化,导致相关设备和回路受影响,影响范围的确定和回路的验证困难,大大增加了检修、扩建和改造工作的实施难度。针对上述问题,本文对首先分析了国家电网公司典型的智能变电站继电保护配置模式,并与常规变电站“明显电气断开点”的安全措施技术相比,分析了智能变电站二次回路各种安全隔离技术的特点；结合现场工程实践经验,阐述了智能变电站继电保护现场作业时安全措施应遵循的原则,并以典型的220千伏线路保护、500千伏主变保护间隔为例,阐述了在设备定校、缺陷处理等不同现场作业时所需的二次安全措施；在此基础上,分析了智能变电站扩建策略和相关安全措施,并以杭州220千伏文津变改扩建工程为例,验证改扩建策略的正确性和相关安全措施的可靠性；最后,结合智能变电站智能终端改建工作,提出了智能终端改建技术方案,以最大程度减少因改建工程造成的一次设备停役时间。
[Abstract]:Since the construction of "strong smart grid" in 2009 by the State Grid Corporation of China, there are more than 1500 smart substations newly built, expanded or expanded at all voltage levels in the State Grid system. With the rapid development of smart grid construction, smart substations have been faced with a lot of maintenance tasks, and are also facing the needs of expansion and reconstruction of smart substations. The application of information transmission equipment, intelligent substation network coupling between closely, configuration files make two system maintenance, expansion and transformation in the process equipment security isolation security measures difficult, abstract, complex, intelligent substation maintenance, the expansion and renovation work has brought great security risk, increased the difficulty of implementation; especially the substation renovation and expansion process, change station configuration files, related to equipment and circuit affected, and to determine the effect of loop range verification difficult, greatly increased the difficulty of maintenance, expansion and renovation work. Aiming at the above problems, this paper analyzes the typical national Power Grid Corp of intelligent substation relay protection configuration mode, and compared with the conventional substation technical safety measures "clear electrical disconnection point", analyzes the characteristics of smart substation secondary circuit two kinds of security isolation technology; based on the engineering practice experience, expounded the intelligent substation relay protection field work safety measures should follow the principle of taking the typical 220 thousand volt and 500 thousand volt line protection transformer protection interval as an example, describes the two safety measures required in equipment calibration and defect treatment of different field operations; on this basis, analysis of the expansion strategy of intelligent substation and the related security measures. Taking Hangzhou 220 thousand volt Wenjin change expansion project as an example, to verify the reliability and validity of the expansion strategy of relevant safety measures; finally, combined with the wisdom Can the substation intelligent terminal reconstruction work, put forward the intelligent terminal reconstruction technical scheme, in order to minimize the time of equipment shutdown due to the reconstruction project.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM63;TM76

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