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随着经济的迅速发展以及科学技术水平的不断提高,我国的建筑业取得了较大程度上的进步,为我国国民经济的发展以及人民生活水平的提高做出重要贡献。在一项建筑工程之中,工程供电具有重要的地位与作用,工程供电质量的优劣将会对整个建筑工程的功能发挥起到重要的影响。一般情况下,建筑工程使用的基本供电系统主要有三相三线制与三相四线制等,根据IES的相关规定,又可以将其分为三类系统,分别是TT系统TN系统以及IT系统。本文就针对IT系统、TT系统、TN系统的基本原理及应用范围进行研究与分析。
With the rapid development of the economy and the continuous improvement of the level of science and technology, China’s construction industry has made a greater degree of progress, and made important contributions to the development of China’s national economy and the improvement of people’s living standards. In a construction project, the project power supply has an important status and role, and the quality of the project power supply quality will play an important role in the function of the entire construction project. Under normal circumstances, the basic power supply system used in construction projects is mainly three-phase three-wire system and three-phase four-wire system. According to the relevant regulations of IES, it can be divided into three types of systems, namely TT system TN system and IT system. This article studies and analyzes the basic principles and application scope of IT systems, TT systems, and TN systems.