500kV变电所保护小室设计及抗干扰措施

随着计算机软硬件技术、网络技术，通信技术的发展，计算机监控系统在500kV变电所中已广泛应用。在一些工程中，为减少控制电缆，缩减主建筑占地面积，二次设备采用了放至配电装置区的方式。由于弱电设备多，环境电压等级高，电磁干扰强，使许多人对这种方式的安全可靠性提出了疑问。本文着重从干扰源、抗干扰措施及保护小室的设计角度作了分析，对保护小室下放模式的安全可靠性作出肯定，并对小室屏蔽设计提出了一些看法。

The design of protection room and its anti-interference measures in 500 kV substation

With the technology development of software&hardware,networking,communication,computer monitoring control systems have been wildly used in500kVsubstations.More and more control and protection equipment have been put near the switchgear in order to reduce the quantity of control cable and area of main construction.Many people oppugn the dependability of this pattern because of the more feeble-electric equipments,the higher voltage and the stronger EMI.This paper analyzes the souse of EMI,the method of anti-interference and the design of protection room,substantiates the dependability of this pattern,and gives some opinion about the design of protection room.