区域选择性联锁(ZSI)作为一种新的保护方式,克服了传统配电系统保护中上下级间难以达到配合的选择性以及短路电流对系统冲击大等缺点。在北京南站房工程中,在原有保护的基础上,正确地使用和配置区域选择性联锁,有效地提高了供电系统的可靠性。 ZSI, as a new protection method, overcomes the shortcomings of the traditional power distribution system protection, such as the difficulty of meeting the coordination between upper and lower levels and the short circuit current impact on the system. In the project of Beijing South Station Building, based on the original protection, the selective use of regional selective interlocking is correctly used and the reliability of the power supply system is effectively improved.