Specially, generator protection, under-voltage protection and frequency protection are introduced in this paper.
文中特别介绍了发电机保护和低频低压解列技术的应用。
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。
At present the matching problems between the generator over frequency protection and turbine over speed protection exist commonly in coal-fired power units.
目前，火电机组普遍存在发电机过频保护与汽轮机超速保护之间的配合问题。
The paper introduced the hazard of large turbine generator operation under abnormal frequency and technical requirements and criteria for low frequency protection.
介绍了大型汽轮发电机组频率异常运行的危害和对低频保护的技术要求及准则；
The fastest-growing data is archive data, which is ideal for cloud storage given a number of factors, including cost, frequency of access, protection, and availability.
增长速度最快的数据是归档数据，鉴于很多因素它是云存储的理想之选，这些因素包括成本、访问频率、保护和可用性。
This paper mainly discusses the control and protection system for the 20kw VSCF (Variable Speed Constant Frequency) Wave Power Electric Station.
本文着重介绍了20千瓦变速恒频波力发电系统的控制功能和保护体系。
The switch frequency is increased and the output harmonic is decreased while the overcurrent protection is ensured.
保证过电流保护的同时，还提高了开关频率，减小了输出谐波。
Call upon us each morning and ask us to come closer to you for your guidance and protection each day as these aberrations will continue to come through with greater frequency.
请在每个早晨呼叫我们的帮助，让我们更加的接近你，作为你的指引和保护，在每天，由于这些畸变将持续不断的带来更高的频率振动。
If only one channel is available in the frequency band equipment protection can be optionally implemented with a1 + 1hot standby configuration.
如果频带中只有一个信道可用，可以选择使用1 +1热备用配置实现设备保护。
The appropriative test menu for "power frequency variation" is normally built in domestic relay protection test instruments, but it should be calculated and set beforehand for imported instruments.
国产继电保护试验仪一般都有针对工频变化量的专用测试菜单，而进口仪器则需预先计算和设置。
When the variation of bus-bar voltage and frequency occurs, the reliability of electric motors, transformers, control and protection system is analyzed in this thesis.
当电网电压和频率的变化时，分析了电动机、变压器、控制及保护系统、照明系统、通信导航设备等受电器工作的可靠性。
With fixed frequency control circuit, it provides with over voltage, over current, overheat and short circuit protection.
该系列电源适配器，采用固定频率控制电路，具备限流、限压、过温、短路全功能保护。
This paper introduces CPLD realization of frequency measure in digital relay protection equipment powered by DSP.
介绍了基于DSP的微机继电保护装置中频率测量的CPLD实现。
It compares the pilot distance protection with power line carrier (PLC) in the single or double frequency and the differential protection with optical fiber in the loop or chain connection.
比较单频率与双频率载波通道的纵联距离保护和环状与链状连接光纤通道的差动保护方案。
Consider of water ecosystem protection and characteristics of ultrasonic technology, low frequency and low power ultrasonic especially suit to control algal growth in water body.
超声波的空化作用能够抑制藻类生长，从保护水体生态系统以及超声波技术本身的特点考虑，低频率、低功率的超声波更适合于水体抑藻应用。
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.
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。
Note: About the code of other voltage and frequency, winding protection and connection box position, please refer to Orde No. in page 20.
注：关于其他电压与频率、绕组保护以及接线盒位置的编码，请见第20页订货号。
The supervision agencies for the radiation protection should enhance law enforcement of health and increases the frequency of the regular supervision to guarantee the proper use of radiation sources.
放射防护监督部门要加大卫生执法力度、增加日常监督检查频次，确保放射源安全合理运用。
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 thesis presents the design and realization of a data synchronous acquisition system in integrated protection based on FPGA and digital frequency multiplying technique.
本论文的任务是设计并实现基于FPGA及数字倍频技术的集成保护中数据同步采集系统。
This paper presents that the protection for the phase to phase fault should be composed of high frequency teleprotection channel and overreached distance relay.
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。
For Shanghai power grid, which has large short circuit capacity and short electrical distance, a method using imported instrument to test power frequency variation distance protection is presented.
结合上海电网具有短路容量大、电气距离短的特点，提出了使用进口仪器测试工频变化量距离保护的具体方法。
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.
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。
Harm on humans health caused by power frequency electromagnetic field is given in detail, with reference on related materials of foreign countries. Corresponding protection measures are described.
参考国外相关资料，对工频电磁场给人体健康带来的危害进行了较为详细的介绍，并对相应的防范措施作了一些说明。
The paper presents the application of the technology of frequency conversion in the air-condition. It has the high efficiency, saving the energy, protection of the machine.
本文只论述变频技术在空调系统中的应用，它具有高效、节约能源、保护电机的优点。
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.
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。
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.
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 roadside accident frequency is higher in mountainous area highway, this is concerned with lacking protection facilities.
山区公路的路侧事故率较高，这与山区公路中缺乏防护设施的保护有关。
The roadside accident frequency is higher in mountainous area highway, this is concerned with lacking protection facilities.
山区公路的路侧事故率较高，这与山区公路中缺乏防护设施的保护有关。
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