CAJ | 학술논문

为了准确得到电动机采样信号的有效值，对电动机进行正确保护，介绍了一种基于小波分析的电动机综合保护器设计。该设计包括电动机保护算法、关键的软硬件设计。算法上，采用小波分析，可以抑制衰减的直流分量和非整次谐波分量，弥补傅立叶算法的不足，为电动机保护提供保证。软件上，采用μC/OS-II操作系统对各个任务进行调度管理，让这些任务可以并发工作，提高系统的实时性。硬件上，设计了以太网接口，满足电动机保护智能化、网络化的要求。实践表明，该保护器能较好地实现电动机保护，具有一定的现实意义。
위료준학득도전동궤채양신호적유효치，대전동궤진행정학보호，개소료일충기우소파분석적전동궤종합보호기설계。해설계포괄전동궤보호산법、관건적연경건설계。산법상，채용소파분석，가이억제쇠감적직류분량화비정차해파분량，미보부립협산법적불족，위전동궤보호제공보증。연건상，채용μC/OS-II조작계통대각개임무진행조도관리，양저사임무가이병발공작，제고계통적실시성。경건상，설계료이태망접구，만족전동궤보호지능화、망락화적요구。실천표명，해보호기능교호지실현전동궤보호，구유일정적현실의의。
In order to obtain the effective values of motor sampled signal accurately, for proper protection of motor, this paper introduces a design of motor comprehensive protector based on wavelet analysis. The design includes the motor protection algorithm and key design of hardware and software. On the algorithm side, it uses wavelet analysis, the components of damped DC and noninteger harmonics are restrained by the wavelet analysis. The wavelet analysis remedies the deficiency of Fourier algorithm and provides assurance for motor protection. On the software side, it uses theμC/OS-II operating system and manages every task, so these tasks can work simultaneously and thus the real-time performance of the system is improved. On the hardware side, it designs Ethernet interface to meet the intelligent and networked requirements of motor protection. Practice shows that the protector can realize motor protection effectively, which has certain practical significance.