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基于DSP的微机型继电保护抗干扰研究 被引量:15

Research on anti-interference of DSP-based relay protection
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摘要 以基于DSP芯片TMS320VC33的微机型继电保护装置为例,从硬件、软件、工程实际等几个方面,分别介绍了该装置在研制过程中所采取的几种较为有效的抗干扰防护措施。硬件方面包括大规模可编辑逻辑器件CPLD(ComplexProgrammingLogicDevice)的应用、电路板合理布局、隔离、屏蔽、接地、对电源的处理等;软件方面包括对输入采样数据校核、关键输出口闭锁、看门狗的设置等。还特别介绍了该装置在生产实际中所注意的问题,如在电路板与显示板之间加装1块屏蔽板,使用2组电源,在装置各关键部位加装磁环、磁珠、光电隔离、绝缘纸贴等专用抗干扰部件等。试验证明,该装置由于采用了适当的防护措施,各项性能指标均符合要求,具有良好的抗干扰性能。 With the relay protection based on DSP ship TMS 320 VC 33 as an example ,its anti -interference measures are introduced from the hardware,software and practices. For hardware,CPLD application,reasonable layout,isolation,shielding,grounding and power supply handling of PCB are included. For software,sampling signal check,key outlet locking and watchdog are included. Some suggestions are proposed,such as adding a shielding panel between the circuit board and the display board,using two sets of power supply,applying magnetic cores and beads,optical isolation, isolation sticker,ctc on the key positions. Tests prove that the equipment meets the required specifications due to adopting proper anti z interference measures.
出处 《电力自动化设备》 EI CSCD 北大核心 2006年第4期4-7,共4页 Electric Power Automation Equipment
关键词 继电保护 抗干扰 DSP relay protection anti-interference DSP
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