一种新型基于高速串行通信的多通道同步采样技术

微机型高压继电保护装置需要实时采样和处理多通道交流电气量数据,多通道采样数据的同步性和数据处理的实时性是影响保护性能的2个重要因素。文中针对以往同步采样及数据接口方式进行了改进,提出了一种基于高速串行通信的多通道同步采样技术,硬件上进一步保证数据采样同步性,同时提高采样数据传输、存储的快速性和并发性。该技术具有很好的扩展性和高可靠性,可以满足不同微机型高压继电保护装置,尤其是模拟采样回路通道数需求较多的场合,目前已经在某系列微机型高压继电保护装置上得到验证并取得实际工程应用。

A New Multi-channel Synchronous Sampling Technique Based on High-speed Serial Communication

High voltage microprocessor relay protection devices need to sample and manage multi-channel AC electrical data.Sampling synchronization and real-time performance of data processing are key factors which affect protect performance.A multi-channel synchronous sampling technique based on high-speed serial communication is proposed to improve synchronous sampling and data interface mode.The technique can further ensure sampling synchronization based on existing hardware.It can also enhance the real-time and parallel processing performance of sampling data transmission and storage.This technique has good scalability and high reliability.It meets the requirements of different types of high voltage microprocessor relay protection devices,and is especially suitable for situations which require many channels of analog sampling loop.This technique has been tested in a series of high voltage relay protection devices and has been used in engineering practices.