CAJ | 학술논문

在UPS系统扩容工程中，交流负载不停电割接并网是工程实施过程中必不可少的步骤和重要环节。然而，交流电源割接不同于直流电源割接，新建系统相线与原有系统对应相线间的相位差是一项关键的指标，如果相位差过大，并网将会引起短路事故。因此，如何制订安全可靠、切实可行的负载不停电割接方案，成为设计、施工和管理人员必须高度重视的一项重要工作。通过分析UPS系统的构成、割接前需准备的事项，总结以往割接的成功经验，提出科学实用的割接方案和割接操作步骤。
재UPS계통확용공정중，교류부재불정전할접병망시공정실시과정중필불가소적보취화중요배절。연이，교류전원할접불동우직류전원할접，신건계통상선여원유계통대응상선간적상위차시일항관건적지표，여과상위차과대，병망장회인기단로사고。인차，여하제정안전가고、절실가행적부재불정전할접방안，성위설계、시공화관리인원필수고도중시적일항중요공작。통과분석UPS계통적구성、할접전수준비적사항，총결이왕할접적성공경험，제출과학실용적할접방안화할접조작보취。
In the reconstruction project of UPS system, the AC load cutover is essential implementation steps and important link in the process of project. However, the AC power supply cutover is different from the DC power supply cutover, the corresponding phase difference of live wire between the new system and the original system is a key index. If the phase difference is too big, it wil cause a short circuit accident. Therefore, how to establish the reliable and practicable load uninterrupted cutover proposal become an important work, for which engineers of design, construction and management must pay great attention. Through the analysis of the composition of UPS system,combined with the items need to be prepared before the cutover,it summariz-es the successful previous experiences on cutover, put forward the scientific and practical cutover solution and cutover steps.