基于和电流回路误动的新防误系列端子研制

通过和电流回路误动的案例,深挖误动根源,发现所有的误碰都发生在端子上,而传统端子没有任何防误措施。从而提出新型防误端子的概念并研发出新型和电流、母差、联跳等系列端子并应用。以和电流回路隐患为例,提出通过改进现有和电流回路试验端子的结构,实现端子操作顺序的唯一性。通过端子固有的机械结构实现闭锁,彻底杜绝在和电流回路上工作出现误动事故。新防误端子杜绝跳项操作,巧妙遮住能误碰的地方,颠覆了传统端子的概念。改变了以前单纯靠二次措施技术措施单作为单一技术管理手段导致事故屡次发生的现状,有力地推动了继保二次技术的发展,开创了利用新防误端子解决回路误动的新思路。同时新端子可以应用到计量、自动化等回路中,应用范围广。

Development of new anti misoperation terminals based on misoperation of sum current loop

In this paper, through the case of the misoperation of the sum current circuit and digging out the cause of the misoperation, it is found that all the malfunctions occur on the terminals, and the traditional terminals have no anti error prevention measures, thus the concept of a new type of anti error terminal is proposed and a new type of terminal, such as current, bus differential protection and joint jump, is developed and applied. In this paper, taking the hidden trouble of sum current circuit as an example, the uniqueness of terminal operation sequence is realized by improving the structure of test terminals used for sum current loop. The lock is realized through the inherent mechanical structure of terminals, and the misoperation accidents in the current loop are completely eliminated. The new anti misoperation terminal prevents the jumping operation, skillfully conceals the places where may be touched by mistake, and subverts the concept of the traditional terminal. It changes the situation that the accident occurred repeatedly by the secondary measures as a single technical management means, which greatly promotes the development of the relay protection secondary technology. The new idea of using the new anti malfunction terminal to solve the malfunction of the loop is created. At the same time, the new terminal can be applied to the circuits of metering, automation, etc., and has wide application scope. This work is supported by Science and Technology Project of China Southern Power Grid (No. GDKJQQ20161128).