智能变电站电子式互感器改造方案及关键技术研究

Research on Transformation Scheme and Key Technology of Electronic Transformer in Smart Substation

摘要:

某220 kV智能变电站所使用的互感器均为电子式互感器。该类电子式互感器及其配套的二次设备均属于早期生产的智能设备，装置本身存在缺陷，加之运行多年，其工况已不能满足稳定运行的要求。为保障地区电网的安全运行，亟需进行全站电子式互感器及其配套设备的改造工作。针对该变电站改造的前期准备和改造过程中的关键技术问题，提出了解决方案并进行总结，旨在提高智能变电站改造过程中的安全性、可行性和技术性。

Abstract:

At present, the type of transformers which are in operation used in an early 220 kV smart substation is electronic transformer. This type of electronic transformer and its supporting secondary equipment are intelligent equipment produced in the early stage of technological immaturity. The device itself has defects. In addition, it has been in operation for many years, and its working conditions can not meet the requirements of stable operation, which lays hidden dangers for the safe operation of regional power grid. It is urgent to carry out the commissioning, rectification and transformation of electronic transformer and its supporting equipment of the whole station. Aiming at the preliminary preparation of transformation and the key technical problems in the transformation process, solutions and thinking summary are put forward in order to improve the safety, feasibility and technology in the transformation process of smart substation.