A Drawback and Its Solutions of Microprocessor-based Transformer Protection

摘要：

When using the bypass circuit breaker as transformer’s and the reverse, the current ， voltage circuit switch and protection trip switch of the microprocessor-based transformer protection are manual. It is easy to cause the current circuit broken when switching, and this is dangerous to the operator and device. The protection must be disabled before switch and be enabled after switch and it is easy to cause the differential protection misoperation. This solution use digital switch to switching the current and voltage, the current circuit can not be broken when switching, and it is safety to the operator and device. The differential protection is locked when switching the current and voltage, and the misoperation of differential protection is reduced. And this solution makes the remote operations and the man-free substations possible.

关键词： Transformer protection Circuit Digital switch

作者: 刘利成

作者单位: 巢湖供电公司 安徽省巢湖市 238005

会议类型: 国际会议

会议名称: 第六届输配电技术国际会议

会议地点: 广州

会议语种:英文

在线出版日期: 2007-11-10（万方平台首次上网日期，不代表论文的发表时间）