对大规模交直流网络下的高压直流控制保护系统进行参数优化设计，是保证灵活交流输电系统暂态性和稳定性良好的重要手段。
The optimal design of HVDC control and protection parameters in the case of large-scale ac and DC power system network is a valid measure to ensure achieving good transient and stable performance.
高压直流输电系统中最关键的部分是控制保护部分。
Control and protect section is the most pivotal section in HVDC system.
直流供电的控制和保护系统对确保轨道交通的安全、可靠的运行，具有举足轻重的作用。
The control and protection system in DC power distribution systems plays a very important role in ensuring the mass transit railway safe and reliable operation.
地铁直流供电的保护与控制系统对确保地铁的安全可靠运行起着关键作用。
The protection and control system in subway DC power supply systems play a key role in ensuring the safety and reliability of the subway.
直流牵引供电系统的馈线保护以微处理器为基础，用来完成对直流快速断路器的控制和保护。
The protection of feeder line in DC traction supply system is based on microcomputer, which is used to control and protect the high-speed circuit breakers.
用此方法对一个直流电机数字控制调速系统进行堵转保护。
It can be used to provide blocking protection to a specific DC motor speed control system.
介绍了一种基于直流电流传感器检测和单片机控制的新型直流检测式选择性漏电保护系统，重点阐述了系统应用软件的设计。
This paper introduces a new kind of DC examination and selective leakage protection system based on DC Current Sensor examination and single chip computer control.
控制保护系统的运行情况直接影响着直流输电系统的安全稳定运行。
The stable and secure operation of an HVDC transmission system is influenced by the operating performance of its control and protection system.
直流输电的控制和保护二次系统是国产化的重点，而脉冲发生器是控制和保护系统中的关键技术之一。
The heart of HVDC link is its control and protect system, and my work is focused on firing-pulse generator―an important part in the control and protect system .
直流稳压电源主要是用于对系统中的控制电路、驱动电路以及各种保护电路提供恒压电源，使得系统能够正常工作。
DC power supply is mainly provide constant voltage power supply for control circuit, driver circuit and a variety of protection circuits and allows the system to work properly.
直流电源对核电厂许多系统的监测、调节控制和保护功能起着非常重要的作用，其中任何一个系统的丧失都会有导致堆芯损坏的风险。
DC power is very important for the system's supervising, adjusting, control and protect function, any losing of the DC power will cause the risking of the nuclear core damage.
另一方面，线路故障后直流线路保护的暂态响应特性与控制系统强相关，而对直流系统这种特有复杂性对线路保护影响的研究较少。
On the other hand, the transient characteristics of the HVDC line fault and thus the line protections are affected by the HVDC control system, which is very complicated and still a hard nut to crush.
另一方面，线路故障后直流线路保护的暂态响应特性与控制系统强相关，而对直流系统这种特有复杂性对线路保护影响的研究较少。
On the other hand, the transient characteristics of the HVDC line fault and thus the line protections are affected by the HVDC control system, which is very complicated and still a hard nut to crush.
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