一种数字式变压器—线路组保护装置的研究-research on a digital transformer - line group protection device.docxVIP

华北电力大学硕士学位论文 华北电力大学硕士学位论文 摘要 对于变压器一线路一体保护的问题不是很常见，但在实际运行中的某些特定环境中 它又有一定的优势，比如在本课题研究的变压器短线路接线方式中，作为一体保护将更 能兼顾实用及经济性的要求 p 而现今在国内外对此保护问题还没有一套专门的保护装 置，因此对此问题的研究将具有实际意义，并具有创新性，本课题研究中首先针对此保 护的特殊要求，即能实现变压器保护又能实现部分线路保护功能，提出了保护配置综合 方案，并设计出了可行的装置硬件总体方案;重点对保护的通信问题进行了分析研究， 设计了适用于本保护的通信方案，完成了通信的硬件设计和软件实现，并进行了可行性 试验 ，在通信实现中对多端通信的问题也做了一定考虑;另外结合本课题研究的实际 提出适合于变压器一线路一体的保护判据原理，对装置的硬件结构和软件实现进行了 框图逻辑设计分析，为下一步具体保护功能编程和正式产品的实现创造了条件。本文对 以上这些方面的问题做出了 一定的研究，并分别予以了详述介绍。 关键词: 变压器，短线路，保护判据，硬件，软件，通信 ABSTRACT Transformer-circuitry integrated protection is not a common problem ，while in practical operation it has some advantages. For example，in this paper，the research of transformer short-line connectìon will give attent?on to practicability and economy. So t缸， 也ere is 口ot a special protection device for this problem at home and abroad. The special demand of this protection is that it can realize transformer protection and partly realize line protection as well. In this regard，firstly the research proposed a general protection configuration scheme and designed feasible and overa11 scheme of device hardware. The communication problem of protection is analyzed. The communication scheme adaptive to the protection is designed and the hardware design and so仕飞Nare configuration ?s completed. Some feasibility test has been carried out，and multiterminal communication problem is considered in communication design. In addition，according to the research，the protection criterìon theory adaptive to Transformer-line integrated protection is proposed . The hardware configuration of device and so丘ware programming is designed and analyzed ，which ìs preparation for certain protection function progr创nming and production realization. The research of this paper includes the above problem and has a detail introductíon. Wang Shu Ning(Electric Power System and Automation) Dìcected by prof. Liu Jian Fei Key words: transformer，short circuitry，protection criterion ，hardware，software， communicati