母线保护使用母联位置继电器时的相关问题探讨

The relay quesitions discussion of Busbar protection issues related to the use of the mother of the position

本文针对母联位置继电器在母差保护中应用时可能出现的保护逻辑问题,作了较全面地分析和探讨。在母线保护差动电流计算、大差比率制动系数的自动调整、母联分位死区保护等方面,通过对保护工作原理和动作逻辑进行分析,最后发现当母联位置继电器使用不当时有可能导致母线保护的误动或拒动。本文分别研究了它们的动作行为,并提出了合理的解决方案,以确保母差保护准确动作。本文为保护装置的改进和母线保护事故分析提供了参考依据,具有一定的工程实用价值。

In this paper, the mother of position relay may occur logical problems when used in bus differential protection in the protection, we made a more comprehensive analysis and discussion. It analysis of the protection of works and action logic in the differential current busbar protection calculated,automatically adjusts big bad ratio braking coefficient and the mother of the dead quintile protection and so on,and finally found the location when the mother of the relay is not the time likely busbar protection cause malfunction or refuse to move. This paper studied the behavior of their actions and made reasonable solution to ensure accurate operation of bus differential protection. In this paper, for the protection and improvement of the bus accident protection device provides a reference analysis, has some practical value.