Module components based current differential relay can eliminate the adverse effect of the distributed capacitive current. 利用模分量构成的模分量差动保护能够从根本上消除分布电容电流的不利影响。
This paper proposes the important of several questions of the current transformer ( TA) and connect group of it's secondary circuit in the transformer differential relay. 摘要:本文阐述了变压器差动保护中电流互感器TA及其联接组的若干技术新问题的重要性。
Current balance type current differential relay 电流平衡式差动电流继电器
Current Transformer Connection Scheme for Differential Protection on Transformer of Full Star Connected The Methods of Examining the Current Transformers Circuit Connection Errors in Computerized Differential Relay Protection 全星形变压器差动保护电流互感器接线方式的探讨
The Methods of Examining the Current Transformers Circuit Connection Errors in Computerized Differential Relay Protection 微机差动保护中检测电流互感器接线错误的方法
The sensitivity and the security of the percentage differential criteria using phase current and superimposed phase current are studied comparatively. Study on Digital Percentage Differential and Ground Fault Relay for Power Transformer Based on Kalman Filter 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。基于卡尔曼滤波的电力变压器主保护的研究
Distributed Capacitive Current Compensation Algorithm for Current Differential Relay of UHV Transmission Line 适用于特高压线路的差动保护分布电容电流补偿算法
The influences of current transformer saturation on the operation of unit transformer differential protection relay under different conditions were analyzed with ATP ( Alternative Transients Program). 采用ATP(AlternativeTransientsProgram)仿真程序对CT的饱和问题进行了研究,分析比较在不同条件下CT饱和的行为特征及其对单元件横差保护的影响。
How to discriminate between internal fault and magnetizing inrush current is the difficulty of transformer protection when apply differential relay. 变压器主保护选择差动在原理上存在不足,带来的问题就是如何准确鉴别励磁涌流与内部故障,这也是目前变压器保护的难点。
Dealing with a Breakdown of a Middle Impedance Bus Current Differential Relay 一例中阻抗母差保护故障处理及原因分析
Discussion on the Cause of Generation and Restraint Measures for Unbalanced Current in Differential Relay Protection 浅谈变压器差动保护中不平衡电流的产生原因和克服方法
Multi-terminal Lines Current Differential Relay Based on Fiber Optical Communication 基于光纤通信的多端线路电流差动保护装置
Effect of Bit Error and Transmission Delay of Multiplex Channel on Line Current Differential Relay 复用通道误码和延时对线路纵差保护的影响
The sampling test results of the proposed scheme are presented and analyzed. The dynam ic sim ulation test results for the developed GPS based current differential relay are also introduced. 对该方案的同步采样试验结果和所开发的基于GPS的电流差动保护装置的动模试验结果进行了介绍和分析。
This paper reviews and analyzes the existing problems of shunt reactor protection, including the sensitivity and reliability of turn-to-turn fault protection, current transformer ( CT) saturation of differential relay and the characteristic of overload protection. 分析了目前超高压并联电抗器保护所存在的一些问题,包括电抗器匝间短路保护灵敏度与可靠性、电流互感器暂态特性不一致对差动保护的影响等。
For the 220 kV and above transformer with current transformer equipped on the delta side, this paper provides a new approach based on the phase current differential relay. 针对220kV以上D侧套管内装设电流互感器的变压器,提出了一种采用相电流差动接线的保护方案。
This article by clearing the break-down of the relay, analyses the acting principle of the Subsection breaker of the PMH-114 middle impedance bus current differential relay made in Xu-chang Relay Factory and also suggests reasonable break-down searching and analysing methods. 通过一例对许昌继电器厂PMH-114型中阻抗母线差动保护的故障排除,分析该装置母联切换回路的动作原理,提出正确的故障查找、分析方法。
The uses, operating principle and main requirements of the current transformer for differential relay with high impedance were described. 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。
Current Transformer for Differential Relay with High Impedance and Its Design 高阻抗差动继电器用电流互感器及其设计
At last, a simulation experiment using Matlab is conducted, and the result of the experiment proves that the current differential protection is more effective that the main relay protection of traditional transformer. 最后采用Matlab软件进行仿真试验,试验结果证明了该保护方案的效率优于目前传统变压器的主保护方案。