高频保护

220kV系统高频保护异常运行分析及预防措施

Analysis of abnormal operation of 220 kV high-frequency protection and its countermeasures

WXB-15型微机高频保护误动作分析

Maloperation Analysis of WXB-15 High-frequency Protection Based on Microcomputer

介绍了SF－501旁路高频保护专用收发信机的开发研制及特点。

The development of SF-501 transceiver specially used for bypath HF protection and its feature are described in this paper .

通过分析，Blocking保护方案高频保护配合关系与通常采用的闭锁式保护不同，与保护命令通道传输时间存在配合关系。

It is found by analysis that , different from protection we usually adopt , the high frequency protection of the blocking scheme has cooperative relationship with protection command channel transmission time .

WXB-11型微机高频保护误动原因分析

Analysis of Causes for Mishandling of WXB-11 Microcomputer High frequency Protection

330kV线路高频保护通道问题的研究

Study on Carrier Protection Channel for 330 kV Lines

SF-501旁路高频保护专用收发信机的开发研制

Development of SF-501 Transceiver Specially Used for Bypath HF Protection

美国SEL-321线路微机高频保护闭锁式动作逻辑国产化初探

Discussion on blocked mode operation logic localization of American SEL-321 microprocessor based HF protection for transmission line

对由CKF集成电路保护装置与收发信机构成的方向高频保护误动进行了具体的实例分析，找出了误动的原因是保护装置出口延时太短和收发信机存在收信间断问题。

The maloperation of directional high frequency relay composed of CKF integrated circuit protective device and receiving transmitting unit is analyzed with examples .

目前在我国220kV及以上线路中广泛采用了高频保护作为线路的主保护，地位十分重要。

Adopted high-frequency protection as the main protection of circuit extensively in the our country 220 kVs and the above circuit currently , the position was very important .

在采用DLP保护装置Blocking方案时，由于对其高频保护配合关系研究不够、忽视了高频保护命令载波通道传输时间的影响，导致了区外故障时高频保护误动。

When adopting the blocking scheme in DLP protection equipment , ignoring the effect of high frequency protections ′ s command transmission time in carrier wave channel led to the high frequency protection ′ s maloperation on the fault out of protection region .

微机高频保护在220kV电网系统中应用广泛，其动作正确与否直接关系到电网的安全运行。

In 220 kV electric power system , application of high frequency protection based on microcomputer is very extensive , and whether its action is right or not directly relate to electric power network 's safe operation .

介绍南瑞继保公司生产的RCS-901/2F（M）系列高频保护、RCS-931系列线路纵差保护的光纤通道调试方法。

Introduces the debugging methods of optical fiber channel for RCS-901 / 2F ( M ) high frequency protection and RCS-931 line pilot-wire protection made by Nanrui relay protection company .

用单端取代双端高频保护整组对调试验的实用化研究

Mutual test of a complete set of pilot protection at one terminal

对相差高频保护操作电流的分析

Analysis of the Operation Current of the Phase Difference High Frequency Protection

允许式方向高频保护在电力系统中的应用

Application of permissive power line carrier protection in power system

高频保护专用收发信机的正确整定与联调

Correct setting and on-line test to dedicated transceiver for high frequency protection

高频保护专用收发信机抗干扰及改进措施

Special transceiver ′ s anti-interference and improvement measures in HV pilot protection

影响高频保护正常投入的原因分析及对策

Cause analysis on disturbing the carrier protection 's normal operation and countermeasure

传统的相差高频保护采用比较两侧保护的操作电流I？

Traditional phase differential carrier protection adopt comparing the phase of I ?

特高压串补线路负序方向高频保护行为分析

Performance of negative sequence directional protection on series compensated ultra-high-voltage transmission line

WGC&01B型高频保护收发信机的技术改进

Technological Improvement of WGC-01B Type High Frequency Protection Transceiver

220kVT接线路三侧高频保护的试验

Introduction of Experiment of 220 kV T Connected Line Three Point High-frequency Protection

相差高频保护存在问题的探讨

Discussion on the Problems Existing in Phase-Comparison Pilot Relay

一起电力线路高频保护误动作原因分析和改进措施

Causes Analysis and Improving Measures of Misoperation of High-frequency Protection in Power Line

非全相运行对方向高频保护的影响

Influence of open-phase running on directional comparison pilot protection

一起收信电平过高引起的高频保护误动分析

High-frequency protection maloperation analysis caused by receiver with high-level

一例罕见的高频保护通道故障分析

Analysis of a rare case of PLC channel failure

特高频保护在城网短线群中的应用

Application of UHF Protection on Short Transmission Lines of Urban Power Network HOMOMORPH-GROUP

高频保护通道故障监测方法的研究

Study on the fault detecting in carrier protection channel