摘要
广州市旺隆热电有限公司对锅炉排粉风机和增压风机进行了高压变频改造,为确保设备的可靠性,改造采用了具备自动工频旁路功能的高压变频器,本文首先详细介绍了改造中变频器自动旁路的工变频切换策略,包括变频器与DCS接口信号、工/变频转换的DCS逻辑及风门挡板的超驰控制,然后介绍了高压变频器的继电保护配置,最后分析了高压变频器实际切换效果。
HV Frequency conversion retrofit for powder exhaust fans and booster fans were carried out in Guangzhou Wanglong Thermoelectricity Co.Ltd.,In order to ensure the reliability of the equipment, the automatic bypass was used in high-voltage inverter. Firstly, the switching strategy of automatically bypass is described in this paper, including the interface between inverter and DCS, DCS Logic of VF-FF switchover and override control of damper.Then the protection configurations is introduced. Finally, the switching effect of high voltage inverter is analyzed.
出处
《电气技术》
2014年第7期56-58,71,共4页
Electrical Engineering
关键词
高压变频器
自动旁路
切换策略
high voltage inverter
automatic bypass
switching strategy
