引用本文:褚 强,李 刚,张建成.一种基于超级电容的输电线路在线监测系统电源设计[J].电力自动化设备,2013,33(3):
CHU Qiang,LI Gang,ZHANG Jiancheng.Power supply of transmission line online monitoring system based on super-capacitor[J].Electric Power Automation Equipment,2013,33(3):
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一种基于超级电容的输电线路在线监测系统电源设计
褚 强1, 李 刚2, 张建成1
1.华北电力大学 电气与电子工程学院,河北 保定 071003;2.上海思源电气股份有限公司,上海 201100
摘要:
所设计的系统使用电流互感器取电,利用超级电容的大容量储能和快速充放电特性,经储能超级电容和放电超级电容输出给监测系统供电。电源根据负载端电压变化,通过控制储能电容与放电电容的通断,利用储能电容为放电电容充电,最后通过放电电容对外供电。针对母线电流不稳定,过压保护部分特别设计了能量再利用电路。仿真分析表明互感器输出功率在临界点波动时电源输出稳定,并可满足GPRS/GSM装置传输数据时的功率需求。经样机实测,装置运行效果良好。
关键词:  输电线路  监测  电流互感器  电源  超级电容
DOI:
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基金项目:
Power supply of transmission line online monitoring system based on super-capacitor
CHU Qiang1, LI Gang2, ZHANG Jiancheng1
1.School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,China;2.Shanghai Sieyuan Electric Co.,Ltd.,Shanghai 201100,China
Abstract:
The energy of designed system is induced from the transmission line via current transformer. With large capacity and fast charging/discharging characteristic,both storage super-capacitor and discharge super-capacitor are applied to supply power for the monitoring system. The power is supplied by the discharge capacitor to system while the energy from the storage capacitor to the discharge capacitor is controlled by the connection between them according to the load voltage. An energy re-use circuit is specially designed in the over-voltage protection part to avoid bus current instability. Simulative analysis shows that the output of power supply is stable when the output power of transformer fluctuates at the critical point, meeting the power demand of GPRS/GSM during data transfer. Test results of prototype show its excellent operation.
Key words:  transmission line  monitoring  current transformer  electric power supplies to apparatus  super-capacitor

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