介绍了一种数字式线路差动保护的实现方法。
Presents a realization method of digital line differential protection.
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.
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.
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.
数字式变压器差动保护在星形侧发生外部单相接地或线路单相遭雷击的情况下，差动保护有时会误动。
Digital transformer differential protection may falsely take effective when external single-phase earth fault occurs at star side or the line endures lightning strike on single phase.
电气主设备内部故障的主保护方案是差动保护，差动保护在发电机和线路上的应用比较简单。
The main protection scheme of power equipments against internal faults has been differential protection, the application of which is comparatively simple in the generator and transmission line.
1988年8月6日，由于母线差动保护误动作使线路故障扩大，造成了贵阳电网瓦解的大面积停电事故。
On August 6th 1988, in Guiyang Power System, a line fault was extended to a cascade shutdown accident because of the mal-operation of a busbar differential protection.
由于变压器励磁涌流的存在，使得变压器差动保护有别于其他主设备及线路的差动保护。
It is the existent of magnetizing inrush current in transformer that differs transformer differential protection from differential protection of other main equipments and transmission lines.
它以其独特的保护动作特性解决了线路电流差动保护存在的几个缺陷。
It largely resolves the traditional problems of current differential protection of transmission lines.
特高压长线路可能在线路中间接入并联电抗器，从而有效补偿线路电容电流，抑制空载线路过电压。提出了在特高压长线路中间带并联电抗器时的线路分相电流差动保护原理。
Shunt reactor could be installed in the middle segment of the UHV transmission line, in order to compensate capacitive current of transmission line and limit over-voltage of line without load.
然而电流互感器(CT)饱和会影响输电线路电流差动保护的可靠动作。
However, current transformer (ct) saturation is still affecting the reliability of transmission line differential protection.
在对现有输电线路电流差动保护判据研究的基础上，提出了一种归一化电流差动保护判据。
On the basis of analyzing existing criteria for current differential protection of transmission line, a normalized criterion for current differential protection is proposed.
在对现有输电线路电流差动保护判据研究的基础上，提出了一种归一化电流差动保护判据。
On the basis of analyzing existing criteria for current differential protection of transmission line, a normalized criterion for current differential protection is proposed.
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