一种新型相敏保护器的设计

基金项目:

滨州学院“青年人才创新工程”科研基金(BZXYQNLG200806)

服务滨州科学发展行动计划项目(BZXYFB20110505

详细信息

Design of a Novel Phase-sensitive Protector

1.
Department of Automation of Binzhou University, Binzhou 256600, China. 2.Automatic Control Research Center of Academy of Development of Yellow River Delta Efficient Eco-economy, Binzhou 256600, Chin

摘要: 针对现有的中低压电网相敏保护装置因采用简单的波形逻辑处理电路而存在的测试灵敏度低的问题，提出了一种新型相敏保护器的设计方案，详细介绍了该相敏保护器的工作原理及软硬件设计。该相敏保护器采用电能参数测量集成芯片CS5463直接读取功率因数，测量准确、可靠。实验结果表明，该相敏保护器在电网发生短路时能够可靠动作，短路故障保护动作时间小于80 ms，启动和过载动作时间均大于8 s，满足设计要求。
- 井下供电系统 /
- 三相对称短路 /
- 故障保护 /
- 相敏保护 /
- CS5463
Abstract: For problem of low measuring sensitivity of existing phase-sensitive protectors used in low-middle voltage network caused by simple wave logic processing circuit, the paper proposed a design scheme of a novel phase-sensitive protector, and introduced working principle and designs of software and hardware of the protector in details. The protector uses an integrated measuring chip of power-energy parameters named CS5463 to read power factor directly for correct and reliable measurement. The experimental result showed that the protector can act reliably at the short-current moment in 80 ms and the action time of starting and over-loading is more than 8 s, which all meet design requirements.
- underground power supply system, three-phase symmetrical short-current, fault protection, phase-sensitive protection, CS5463