双数字信号处理的电流继电保护和测控装置的研制

根据微机保护系统的快速、准确的发展趋势和DSP数字信号处理芯片的特点,设计并实现了一种双数字信号处理芯片结构的电流继电保护和测控装置,提高了数据处理速度。采用双端口随机存储器实现两处理器的通信。通过每周波多点数快速傅立叶算法计算,实现对配电线路实时高精度测量、快速谐波分析等功能。微机保护算法采用了具有数字滤波功能的24点离散傅立叶变换算法,消除高次谐波的干扰,提高了电流保护的选择性和可靠性。

中小型电石炉变压器电流继电保护参数的整定计算

电石炉变压器属于特种变压器 ,它的保护参数的整定也具有特殊性 ,不能按常规进行整定。这里根据其运行特点来介绍中小型电石炉变压器电流继电保护方式的选择。

BZL-10B型发电机轴电流继电保护装置

主要对BZL-10B型发电机轴电流继电保护装置的工作原理、操作说明、常见故障的处理方法及上位机监测功能进行了简单的介绍。

煤矿井下6KV供电系统电流继电保护

针对继电保护类型不同、特性差异较大，使继电保护上下级之间的配合、定值的计算与确定比较困难，往往造成较大范围停电。因此要合理的选择运用6KV继电保护系统，减少停电事故的发生。

Simulation Studies of an Integrated Overcurrent Relay Protection Scheme for Distribution Systems

This paper presents an integrated protection technique for power distribution systems. A novel integrated protection scheme based on overcurrent protection technique for distribution system is described, in which a specially designed protection relay is installed at each substation of a network and responsible for the protection of every line sections connected to the substation busbar The conventional directional overcurrent and the new adaptive accelerated protection algorithms with multiple settings are implemented into the relay to cover all the protected line sections. The paper includes studies of a typical multi section distribution network to demonstrate the principle of the scheme. Studies show that the new scheme not only offer the new protection features for individual power line section, but also provide the characteristics of integrated protection.