论文部分内容阅读
矿用隔爆高压配电箱设有选择性漏电保护装置,并且给出了零序电流、零序电压的动作值以及动作时间的整定范围,但没有明确的整定计算公式,大多由经验确定,动作值设定偏小或偏大,使保护装置误动或拒动。以保证灵敏度为整定原则,分析研究零序电流动作值和零序电压动作值的整定计算方法,从保证选择性和可靠性出发,确定了动作时间的整定方法。从而实现了选择性漏电保护动作值的合理整定。
Mine explosion-proof high-voltage distribution box with selective leakage protection device, and gives the zero sequence current, zero sequence voltage action value and the setting range of the action time, but there is no clear setting formula, mostly determined by experience, Action value is set too small or too large, so that the protection device malfunction or refuse to move. In order to ensure the sensitivity is the setting principle, the calculation method of zero-sequence current action value and zero-sequence voltage action value is analyzed and studied. From the view of ensuring the selectivity and reliability, the setting method of action time is determined. Thus, a reasonable setting of the selective leakage protection action value is achieved.