基于DSP的继电保护测控装置

Measurement and Control Equipment for Relay Protection Based on DSP

基于DSP的继电保护测控装置,通过快速傅立叶算法对电量值及各次谐波的测量分析,实现对电网的实时检测。装置采用双CPU结构,其TMSVC5410承担计算,MSP430F149控制通信,XC95144X芯片实现逻辑控制,MAX125芯片实现模数转化,并通过HPI口完成DSP和单片机间的高速数据传递。DSP软件的核心是抑制高次谐波的算法编写及微机保护算法编写,包括数据处理算法、采样点数及采样起始时刻的选择等。

The measurement and control equipment for relay protection was based on DSP. The electric quantity value and subharmonic were measured and analyzed by FFT to realize the real time detection on electricity net. The double CPU structure was adopted by equipment; the TMSVC was used to calculate; the MSP430F149 was used to control the communication; the XC95144X chip was used to realize the logic control; the MAX125 chip was used to realize the conversion between model and figure; the HPI interface was adopted to achieve the high-speed data transmission between DSP and singlechip. The algorithms compiling of high subharmonic restrain and microcomputer protection is the core of DSP software. The algorithm also includes data processing algorithm, sampling Spots, choosing the sampling start time and SO on.