As phase selection schemes, they can be used for perfect digital relay.
因此可作为数字式保护的较理想的选相元件方案。
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。
The electrostatic susceptibility of digital relay was experimentally studied through discharging to the shell by the electrostatic discharge (ESD) generator.
为研究智能电器监控单元的静电放电敏感性，利用静电放电发生器对设备机壳放电进行了实验研究。
Decaying DC offsets are generated following any faults or disturbances in an electric power system, and the measure accuracy of digital relay devices is affected.
在电力系统中，任何故障或扰动都会使得系统中出现衰减直流分量，它将影响继保装置的测量精度。
The experimental result shows that the designed digital relay has the characteristics of good real-time, high EMC, small volume, low cost and simple implementation.
实验结果表明，所设计继电器不仅实时性好、电磁兼容性强，而且体积小、成本低、容易实现。
The switch signal was encoded directly and one state was expressed with 3 long distance sequence code, then it was transmitted through the digital relay line of telecommunication network.
对开关信号进行直接编码，采用3个连续出现的大码距字节表示开关信号的一个状态，编码后的信号利用电信网的数字中继线路传输。
It also has digital mesh networking capabilities, allowing multiple robots to relay radio communications over greater distances.
它还具有数字联网功能，为更远距离的多个机器人中继无线电通信。
Multi-functional comprehensive protective relay digital display part shall be perfect, Calibration clear and accurate.
对多功能综合保护继电器的数码显示部分应完好，刻度清晰、准确。
Shannon 's 1938 master's thesis, A Symbolic Analysis of Relay and Switching Circuits , used Boolean algebra to establish the theoretical basis of modern digital circuits.
香农写于1938年的硕士论文，“继电器与开关电路的符号分析”，应用布尔代数建立现代数字电路的理论基础。
The experimental receiver has been used in a microwave relay system for TV transmission and digital communication, with satisfactory performances.
所研制的接收机用在传输电视和数字通信的微波转发系统中，已获得良好的试验结果。
The article discusses about the proper selection of static relay test points through introducing the contactor sketch of rectifying static relays with digital dial switches and easy-happening faults.
通过对静态继电器整定用数字拨盘开关接点转换示意图和易发生的故障介绍，初步探讨了静态继电器的测试点的合理选择方法。
This device consists of self-coupling transfer, digital logic circuit and low voltage relay circuit.
它由自耦变压器、数字逻辑电路和低压小继电器电路组成。
The digital first-harmonic detecting method based on this kind of filter can be used in anyone power harmonic compensation system and microcomputer relay protection system.
此滤波器设计的数字基波检测方法可用于任何一种电力系统的谐波补偿和微机继电保护系统中。
The periphery output control system is composed of analog peripheral device such as LED, relay, digital switch etc, to control the other weak-current devices and general heavy-current devices.
外围输出控制系统由发光二极管、继电器、数字开关等模拟外围设备，控制其它的弱电设备和一般的强电设备。
With computerized protection having become a major form in power system relay protection, a digital protective device in motor has been developed and used.
随着微机保护成为电力系统继电保护的主流形式，数字式电动机保护装置也被研制和应用。
Introduction was made to the composition and working principle of a power-off time delay relay which adopts CMOS digital circuit, digital dial disc for switch setting and without auxiliary power.
介绍了一种采用CMOS数字电路、数字拨盘开关整定、无辅助电源的断电延时继电器的组成及工作原理。
C1: Digital programmable control with one stored program of 8 segments. The furnaces that use this control also utilize a mechanical Over Temperature Protection relay.
C 1：数字式可编程控制器以一个贮备程序含8个分节，采用此控制器的熔炉并设置了超温度保护继电器。
Design the CAN bus address encoder, communication terminal digital display circuit, control relay circuit, LNK501 switching power supply chip circuitry.
设计了基于CAN总线的地址编码器，通信总站的数码显示电路，控制继电器电路，LNK501开关电源芯片电路。
The digital substation construction scheme, engineering application model, network mode and the configuration of relay are discussed.
探讨了数字化变电站建设中的建设方案、工程应用模式、组网方式和保护配置等问题。
The paper introduces a new teaching method about the digital filter in microprocessor relay and produces notable effect by long, largle teaching practice.
通过长期的教学实践总结了一套微机保护中数字滤波器的讲授方法，并经过各种层次学员的多次实践，反映效果良好。
Research results: the train control centre interfaces for CTCS2 adopting the international standard safety digital interface can overcome the inherent disadvantages of the existing relay interfaces.
研究结果：基于CTCS2地面列控中心接口采用国际上通用的标准安全型数字接口克服继电接口的固有缺点。
The paper introduces the designing method of the digital time-delay relay and gives the detailed electric circuit picture.
阐述了数字式时间继电器的设计方法，给出了详细的电路图。
The results of the digital simulation show that the method can identify fault current and energizing inrush current precisely and makes it rapid and reliable for the protective relay to …
数字仿真结果表明，本方法可准确识别故障电流和励磁涌流，即使在空载合闸于内部故障时，保护继电器也能迅速可靠动作，避免了采用二次谐波制动导致的误动问题。
Among the devices used in a substation, intelligent electronic devices (IED) such as numerical relay protection, fault locator and digital electric transducer are getting popularized.
在牵引变电所的设备中，智能电子设备(IED)得到了越来越广泛的使用。微机保护、故障探测、数字式变送器等已逐步在牵引变电所推广使用。
The status quo of means in developing digital protective relay is introduced and the shortcomings of conventional computer language typing are indicated.
介绍了数字式保护装置开发手段的现状，指出了基于人工录入计算机语言的常规开发手段的缺点。
The tests indicate that digital signals can be transmitted 70 kilometers by the optical transceiver in the single-mode optical fiber without any relay, which meet the aim of the study.
测试表明，该光收发模块可使数字信号在单模光纤中无中继传输70公里，达到了课题设计要求。
A reconfigurable Hardware Platform Based on SOC Design for Digital Protective Relay is presented. It combines the FPGA and the Flash MCU and related interface circuit.
文中提出了基于SOC的可配置微机保护硬件平台的设计方法和具体实现，该平台由FPGA和微处理器以及相关接口构成。
Introduce function, Character of 7ut512 digital differential relay and applying it to differential protect on motor generator.
介绍了7ut5 12型数字式差动保护继电器的功能、特点及在电动机差动保护中的应用。
Introduce function, Character of 7ut512 digital differential relay and applying it to differential protect on motor generator.
介绍了7ut5 12型数字式差动保护继电器的功能、特点及在电动机差动保护中的应用。
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