基本信息:
- 专利标题： 一种变压器直流偏磁电流抑制装置及控制方法
- 专利标题（英）：Suppression device for direct-current biasing current of transformer and control method
- 申请号：CN201510485899.5 申请日：2015-08-10
- 公开(公告)号：CN105048435A 公开(公告)日：2015-11-11
- 发明人： 李锐海 , 孟晓波 , 邹林 , 廖永力 , 王颂 , 张巍 , 吴新桥 , 张贵峰 , 陈晓 , 朱烨 , 龚博 , 金虎 , 周宗国
- 申请人： 中国南方电网有限责任公司电网技术研究中心 , 南方电网科学研究院有限责任公司
- 申请人地址： 广东省广州市天河区珠江新城华穗路6号四层、五层505-508号房
- 专利权人： 中国南方电网有限责任公司电网技术研究中心,南方电网科学研究院有限责任公司
- 当前专利权人： 南方电网科学研究院有限责任公司
- 当前专利权人地址： 广东省广州市天河区珠江新城华穗路6号四层、五层505-508号房
- 代理机构： 广州三环专利代理有限公司
- 代理人： 何传锋
- 主分类号： H02H9/04
- IPC分类号： H02H9/04 ; H02H9/06 ; H02J13/00
The invention discloses a suppression device for direct-current biasing current of a transformer and a control method. The device comprises a nonlinear positive temperature coefficient (PTC) thermistor, a zinc oxide resistor, controlled-clearance dual-ball electrodes, a current sensor, a voltage sensor, a digital monitor and a remote monitoring system, wherein the zinc oxide resistor is connected with the nonlinear PTC thermistor in parallel and is used for protecting the nonlinear PTC thermistor and preventing over-high voltage of a neutral point of the transformer; and the distance between the controlled-clearance dual-ball electrodes can be adjusted and set according to the requirements. The suppression device is simple in structure, small in size, convenient to install and relatively low in fund input; control equipment is not needed; the grounding mode when the transformer normally runs is not changed; the control method for the device has the characteristic of being simple to operate, and essentially has no influence on circuit protection; and the short circuit current of the circuit can be effectively reduced.
公开/授权文献:
- CN105048435B 一种变压器直流偏磁电流抑制装置及控制方法 公开/授权日：2018-09-18