原理是利用相关分析间接实现差动电流虚拟三次谐波比较 。
This approach uses the relative analysis to achieve the comparison of the Virtual Third Harmonic of differential current.
原理是利用相关分析间接实现差动电流虚拟三次谐波比较 。
The influence factors of low water based on correlation analysis in karst drainage basin;
在间断角原理变压器差动保护中，需要测量差动电流导数波形的间断角。
Dead Angle of differential currents is to be measured when realizing the transformer differential protection based on the dead Angle principle.
变压器差动保护的关键问题是判别变压器差动电流是励磁涌流还是故障电流。
It is essential to distinguish excitation inrush from fault current in transformer differential protection.
对石太客运专线牵引供电系统AT所差动电流保护的基本原理进行了简要介绍。
Briefly introduces the basic principles for at post differential current protection of traction power supply system in Shijiazhuang-Taiyuan passenger dedicated lines.
对两种极化电压下的横联差动电流方向保护的选择元件在同杆并架双回线故障下的动作行为进行了研究。
This paper analyses selectors of transverse differential current direction protection using two types polarizing voltage for double circuit lines on the same tower.
研究目的：研制开发用于漏电检测的差动电流传感器，以适应国产化a型地铁车辆的牵引逆变器接地保护的要求。
Research purposes: By researching and developing differential current transducer used for leakage detecting, to adapt the ground protection of traction inverter in localization type a metro vehicle.
该芯片的判决电路采用SCFL(源级耦合晶体管逻辑)的D触发器结构，根据矢量叠加原理设计，采用差动电流放大器构成可调移相器。
The decision circuit of the chip is applied with a DFF using SCFL structure and its tuned phase shifter with differential current amplifiers according to the principle of vector addition.
叙述了高阻差动继电器用电流互感器的用途、工作原理和主要要求。
The uses, operating principle and main requirements of the current transformer for differential relay with high impedance were described.
磁芯采用高频脉冲电流励磁，信号处理电路由峰值检波、低通滤波及差动电路构成。
The toroidal core was excited by sharp pulse current. The sensor circuit is composed of peak value detector, Butterworth low-pass filter and differential amplifier.
研究了基于相关分析的暂态电流差动保护的原理与性能。
In this paper, the principle and performance of the new type of transient current differential protection based on correlation analysis are investigated.
提出了一种适用于输电线路差动保护抗电流互感器(TA)饱和的新方法——电流极性比较法。
A new countermeasure to current transformer (TA) saturation, namely, current polarity comparison method, for differential current protection of transmission line is proposed.
由于并联电抗器两侧的电流发生变化，传统的行波差动保护无法应用于带并联电抗器的输电线路。
Because of the current on the shunt reactor, traditional traveling wave differential protection cannot be applied to transmission line with shunt reactor.
差动保护电流回路接线是否正确，可通过相量分析法和带负荷检验法进行判断。
The wiring correctness of differential protection current loop can be verified using phasor analyzing method and on load testing method.
输入失调电流是两个差动输入端的基极输入电流，当两个输入端的源阻抗不相等时，它可引起仪表放大器的失调误差。
Input offset current is the difference between the two input bias currents and this leads to offset errors in in-amps when source resistances in the two input terminals are unequal.
理论及实例分析表明，通信系统的主—从时钟方式是电流差动保护装置在复用数字通信系统时正确工作的理想方式。
It is shown by theory and case study that the master - slave clock mode in a com munication system is ideal for proper functions of the current differential protection.
同时，使用E1速率来传输电流差动信息后，也使得保护信息传输带宽大大加宽，有利于保护功能的增强与完善。
It also can improve the bandwidth of transmission widely when using E1 rate to transmit current differential information. This can be used by the protection to enhance its performance.
论文根据上述分析设计了基于故障分量采样值差动保护、故障分量相量差动保护、常规电流差动保护和零序电流差动保护自适应的保护方案。
The setting schemes of the resistance coefficient and the least trip differential current for the current differential protection based on sampled values using fault component are discussed.
本文研究提出了一种应用光纤通道的短距离输电线电流差动保护方案。
In this paper a current differential relaying system using fiber-oPtic signal transmission channel is described.
光纤电流差动保护是高压线路主保护的发展趋势。
The main development trend of high voltage transmission line's protection is the line fiber optical differential protection.
本文提出了一种利用微机软件实现的变压器差动保护电流回路断线闭锁方案。
A blocking scheme for current circuit break in differential protection system of transformers performed by software of micro-computer is proposed in this paper.
基于P阱CMOS工艺提出了一种新的差动输入电流传送器。
Based on P-well CMOS processes, a novel differential CMOS current conveyor is presented.
因变压器高压侧的电流互感器选择变比过大，以致超出差动保护软件的参数设置的范围。
The transformation ratio of the original current transformer (CT) on the transformer HV side was so large that a parameter for the differential protection software exceeded its settable scope.
在区内故障时可靠动作，快速切除故障。目前，该方法已成功应用于基于32位DSP的数字式光纤电流差动保护装置。
It ensures both sensitivity for internal faults and reliability for external faults, which is successfully applied in digital fiber current differential protection with 32 - bit DSP.
该电路由差动比较器、精确电流产生电路、充放电电路及其控制电路组成。
It is composed of a differential comparator, an accurate current generator, and a charge and discharge circuit with its control circuit.
目前，该方法已成功应用于WXH- 803数字式光纤电流差动保护装置。
At present, the proposed method has been successfully applied in WXH-803 digital optical fiber current differential protective device.
光纤电流差动保护是高压超高压线路主保护的发展趋势。
Fiber optical current differential protection is the main protections development trend of high and ultra high voltage transmission lines.
差动保护电流回路接线是否正确，可通过相量分析法和带负荷测六角图检验法进行判断。简要介绍这两种方法，并介绍了利用潮流方向验证六角图的方法。
The wiring correctness of differential protection current loop can be verified by using phasor analyzing method and on load test method. These two methods were described.
全面对比分析了全电流比例差动判据和故障分量电流比例差动判据的灵敏性和安全性。
The sensitivity and the security of the percentage differential criteria using phase current and superimposed phase current are studied comparatively.
全面对比分析了全电流比例差动判据和故障分量电流比例差动判据的灵敏性和安全性。
The sensitivity and the security of the percentage differential criteria using phase current and superimposed phase current are studied comparatively.
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