1) low voltage electrified wire netting in mine
井下低压电网
1.
Combined with present situation on overcurrent protection of low voltage electrified wire netting in mine,analysed several reasons on appeared mis-start or refuse-start of overcurrent protection in mine,thus provided some concrete arguments for research workers and users of overcurrent protection.
结合目前井下低压电网过流保护的现状,探讨了井下过流保护出现误动与拒动的诸多原因,以便给采用新原理的过流保护的研究者和改进现有过流保护的使用者提供一些具体的论据。
2) mine low-voltage electric network
矿井低压电网
1.
By analyzing the current leakage-protection system for mine low-voltage electric network,the paper puts forward a new scheme of selective leakageprotection taking PIC16F877A as core and based on the additional detection of DC power supply in addition to the direction of zero sequence power.
在分析目前矿井低压电网漏电保护系统的基础上,提出了以PIC16F877A为核心,基于附加直流电源检测和零序功率方向的新型选择性漏电保护方案,既简化了传统保护装置的设计,又改善井下低压电网漏电保护的动作性能。
3) underground LV distribution network
矿井低压电网
1.
Based on the overview of ground fault protection systems for underground LV distribution networks,this paper analyzes disadvantages of ground fault protection systems being used currently.
分析了目前矿井低压电网漏电保护系统存在的不足 ,提出了基于附加直流电源检测和零序功率方向的漏电保护新判据 ,介绍了基于这些新判据的智能漏电保护装置 ,该装置构成的可通信式漏电保护系统可以实现无级差的选择性漏电保护 ,提高了井下低压电网的安全水
5) underground electric network
井下电网
6) low voltage power network
低压电网
1.
Discussion on reactive power compensation of 0.4 kV low voltage power network;
0.4kV低压电网无功补偿方式探讨
2.
Then derive the intelligence integration protection control techniques and protection methods of coal mine low voltage power network.
介绍一种低压馈电开关智能保护器,该装置以ATmega128单片机作为控制核心,结合电力系统继电保护技术和智能电气技术,提出了矿井低压电网智能综合控制技术和保护方法。
3.
The REMRS (Remote Electricity Meter Reading System)on low voltage power network is a leading research at present, which offers power supply company great efficient for the electric-energy management and sale.
本文首先系统地总结了目前国内外低压电力网数据传输技术的研究现状和存在的问题,在此基础上,从理论上论证了在低压电网上应用扩频载波数据通信技术的可行性和优越性,并重点论述了扩频载波技术抗电力线噪声干扰的机埋;本文提出了一个新颖的基于低压电力线扩频载波通信技术的集中远抄系统的总体方案,即由用户终端、集中器和电能管理系统所组成的网络系统,其中,用户终端到配变集中器用低压电力线作为信道,中间无需其他硬件中继设备,集中器到电能管理系统用公用电话网作为信道。
补充资料:白银有色金属公司深部铜矿主井和副井
白银有色金属公司深部铜矿主井和副井
白银有色金属公司深部铜矿主井和副井
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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