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发明公开
CN1356752A 输电线路数字式行波保护方法及其继电器与保护系统 失效 - 权利终止 转让

输电线路数字式行波保护方法及其继电器与保护系统
摘要：
本发明为输电线路数字式行波保护方法及其继电器与保护系统,属于电力系统领域,包括数字式行波继电器和高频载波通信两个部分。其中:数字式行波继电器包括相应的硬件电路和固化在其中的行波方向继电器原理、保护动作原理和小波变换算法;高频载波通信包括高频收发讯机和高频载波通道—输电线路。本发明通过比较输电线路两端行波方向继电器动作结果来判别故障是否发生在该条线路上,进而做出继电保护是否动作跳闸的决定。所提出的保护具有快速动作性能,方向继电器动作时间小于5毫秒,保护动作时间小于15毫秒,而且与过渡电阻无关、与电流互感器饱和情况无关、不受电力系统振荡影响。
摘要（英）：

A digital travelling wave protecting method for electric power transmission lines and its relay and protection system is disclosed. The said system is composed of digital travelling wave relays containing hardware and firmed software and high-frequency carrier communication unit consisting of high-frequency transceiver and high-frequency carrier channel-power transmission lines. The said method features that the action results of said relays at both ends of a power transmission-line are compared with each other to judge if there is a failure on the line. Its advantages include fast response (5 ms for relay action and 15 ms for protection action).

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