文中对带串补的特高压线路采用负序方向高频保护作为主保护方式进行了研究。
This paper studies the negative sequence directional protection (NSDP) as the primary protection of series compensated UHV transmission line.
高频通道作为高频保护的重要组成部分，其是否正常关系到保护能否正确动作。
The carrier channel is an important component of high frequency protection, and whether it is normal related to the protection action correct or not.
高频保护传统分析方法仅考虑高频信号在通道中的延时效应，没有分析电气量的行波延时效应。
The classic analysis of high-frequency (HF) protection only takes account of the channel delay effect of HF signal, neglects the delay effect of electric traveling wave.
高频保护对于高压线路的正常运行起着极其重要的作用，它可以快速切除故障，保障系统的稳定。
Carrier protection has been playing a very important role in normal operation of HV transmission line. It can cut-off the fault quickly to ensure the system operating stably.
其内部部件备有与高频保护电路在一起的无源分频器，高频保护电路可防止高音驱动器过载损坏。
Its internal components available high-frequency and circuit protection with passive divider, high-frequency driver protection circuit to prevent high-overload damage.
复杂电力系统发生复故障时，方向高频保护可能正确动作也可能不正确动作，而继电保护的不正确动作将直接危害电力系统的安全稳定运行。
While multiple faults occur in complex power system, the pilot protections could correctly operate or not, and incorrect operation of the pilot protection is harmful to the power system.
与先进极高频通信卫星和转型通信卫星计划不同，WGS提供对干扰和核效应无保护的宽带通信。
Unlike programs like AEHF or T-SAT, however, WGS offers wideband communications that are 'unprotected' against jamming and nuclear effects.
而当超高频广播出现时，每个频道基于同样的理由，也加上了空闲的“保护频带”。
When UHF broadcasting came along, empty “guard bands” were added to each channel for the same reason.
分析了等离子喷涂逆变器在高电压大电流条件下，高频变压器参数设计和IGBT保护问题。
The designing parameters of high frequency transformer and the protecting IGBT in plasma spraying inverter with high voltage and large current is analyzed in this paper.
他们是可靠的保护，防止过热，过载，短路以及高频率和输出直流。
They are reliably protected against overheating, overload and short-circuits as well as high frequency and DC at the output.
主要用途：低电压整流，高频转换开关和极性保护。
Applications: Low Voltage, High Frequency Inverters, and Polarity Protection Applications.
加入钙离子，可以抑制钠泵的活动，调节信号的产生，可以保存能量，保护高频细胞。
Enter calcium, which, by inhibiting the activity of the sodium pump, regulates signal firing, and may conserve energy and keep the high-frequency cells from burning out.
介绍了利用高频开关管IGBT构成模块化充电电源的主电路、控制电路及保护电路的结构、原理。
The structure and theory of main circuit, control circuit and protection circuit of modularized charge power supply composed by IGBT high frequency switch tubes are introduced in this paper.
实验表明，该方法在有效地滤除了图像的噪声的同时，还很好地保护了图像的边缘等高频信息，使得降噪效果更加突出。
Experiment shows that the method can protect the high frequency information like edges from reducing the image's noise effectively so that the de-noising effect is more protruded.
结果表明，该算法具有良好的高频特性，适用于高压和超高压输电线路的距离保护。
The results of simulations and tests proved that this algorithm possesses excellent performance and is suitable for EHV transmission line protection.
提出熔敷焊接工艺方法，采用等离子弧、TIG电弧、高频感应、气保护连续炉、真空炉和模中熔铸工艺实现了熔敷焊接工艺方法。
Re melt deposit welding process is proposed in this paper. To realize the technology, plasma arc, TIG arc, high frequency induction, gas shield continuous stove and MSW are adopted.
半导体放电管是新一代抗浪涌保护器件，极间电容是其应用到高频环境下的一个限制因素。
Semiconductor arrester is a new type of surge protection device, which, however, has a large interelectrode capacitance, thus limiting its application in high frequency systems.
提出只有将高频通道、超范围距离元件配合构成允许式纵联距离保护，才能保护同杆双回线跨线不接地故障。
This paper presents that the protection for the phase to phase fault should be composed of high frequency teleprotection channel and overreached distance relay.
该电源由PWM高频升压斩波器及数字化控制SPWM逆变器组成，具有IGBT多重保护及机车抗emi特殊设计。
It consists of high frequency PWM boost chopper and digitalized SPWM inverter. It features IGBT multiple protection and special design for the protection of locomotive from EMI.
本文以高频ups的并联系统为研究对象，研究分析了高频ups并联系统中的环流特性、并联控制、切换保护和系统监控等内容。
This paper focuses on the parallel system of High-frequency UPS, including analyzing of the circulating current characteristics, parallel control, bypass switching strategy, protection and monitor.
我国焊管高频电力设备在继电保护技术方面重视不够。
Enough stress is not laid on the relay protection technique for HF electrical equipment of the welded pipe in our country.
而当超高频广播出现时，每个频道基于同样的理由，也加上了空闲的“保护频带”。
When UHF broadcasting came along, empty "guard bands" were added to each channel for the same reason.
文摘：我国焊管高频电力设备在继电保护技术方面重视不够。
Abstract: Enough stress is not laid on the relay protection technique for HF electrical equipment of the welded pipe in our country.
被动分频网络功能，对热防护系统高频部分提供出声透明的压缩驱动程序的保护。
The passive crossover network features a thermal protection system on the HF section providing audibly transparent protection for the compression driver.
这些都是高输出，高效率的扬声器，采用乐富豪专业专利12“驱动装置和一个专门设计的高品质电动式高频驱动器(带过载保护)。”
These are high-output, high efficiency loudspeakers, featuring Wharfedale pro proprietary 12 "drive units and a purpose-built high quality Electro-Dynamic HF driver (with overload protection)."
所述高频振 荡加湿器与热保护器相互串联。
The high frequency oscillating humidifier is connected in series with the heat protector.
作为一种“保护性肺通气策略，高频振荡通气和部分液体通气日益受到重视。”
As the protective lung ventilation strategy, high frequency oscillatory ventilation (HFOV) and partial liquid ventilation have important significance.
采用高频感应线圈加热，以蒸发-冷凝法制备了纳米铝粉，用空气进行钝化处理，得到有钝化层保护的纳米铝粉。
Aluminum nanopowders were synthesized by high frequency induction evaporation condensation method, and aluminum nanopowders was treated by passivation in air.
采用高频感应线圈加热，以蒸发-冷凝法制备了纳米铝粉，用空气进行钝化处理，得到有钝化层保护的纳米铝粉。
Aluminum nanopowders were synthesized by high frequency induction evaporation condensation method, and aluminum nanopowders was treated by passivation in air.
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