back-up protection

Back-up protection units for relay protection failure in digital substation

数字化变电站继电保护装置失效后备措施研究

The method of economic evaluation about action results of different back-up protection configuration schemes is given.

文中给出了后备保护不同配置方式下动作后果的经济性评估方法；

The traditional back-up protection is based on protecting a single equipment and lack of global concept.

传统的后备保护以单元件的保护为出发点，缺乏系统全局的观念。

Discussion on Improving Adaptability of Back-Up Protection of 110 kV Transmission Line

提高110kV线路后备保护适应能力的探讨

Study on DC line remote back-up protection in HVAC/ DC system

高压交直流混合输电直流线路远后备保护研究

According to the protective speed curves, the tracking measuring function of infrared laser position transducer is applied for back-up protection of travel speed.

根据保护速度曲线用红外激光位置传感器的跟踪测量功能实现速度的后备保护。

Setting program of back-up protection for HV grid transmission lines

高压电网线路后备保护整定程序

According to the setting regulation, operation time of overcurrent protection needs to coordinate with that of its parallel back-up protection.

按整定要求，变压器过流保护动作时间需与相邻保护的后备保护动作时间相配合。

The series can monitor and provide a variety of effective protection for all the back-end electrical equipment to make sure without damage to them.

该产品能对所有后端的电器设备进行监控和多种有效保护，能保证电器设备不受损坏。

Study on Protection of Water Hammer by Slow-Closing Back Pressure Valve

缓闭止回阀防护水锤的研究

Imagine of Realization of Remote Back-up Protection in Main Network above 220 kV

关于220kV及以上主网远后备保护的思考

Over current protection and negative sequence current protection are adopted to realize remote back-up protection.

为实现远后备保护功能，应配置过电流保护和负序电流保护。

Study of back-up protection configuration schemes in power market environment

市场环境下后备保护配置方法的选择

A fast local multi-information back-up protection is proposed, and its realization and simulation areelaborated.

提出了基于本地多信息融合的快速后备保护,讨论了其实现的方式, 并做了相应的仿真验证.

+ gz protection provided by tilt-back seat and gz-2 anti-G suit

后倾座椅与GZ-2抗荷服综合抗荷性能测定

Canadian officials spent six hours and took 19 bus loads of people back to US Customs and Border Protection.

最终，加拿大官员花了6个小时，用19辆满载的巴士，才把这些人送回了美国海关和边境保护中心。

A hat with a wide brim offers good sun protection for your eyes, ears, face, and the back or your neck.

宽边帽子可为眼睛、耳朵、脸部和后颈提供良好的防晒保护。

A Coordination Working Scheme of Back-up Protection and Automatic Safety Device

一种后备保护与安全自动装置协调工作的方案