摘要
高压变频器能够有效降低火电厂厂用电率,单元串联多电平高压变频器以其输出波形好,无发热和转矩脉动等问题,在火电厂大容量主要辅机纷纷进行改造应用.高压变频器运行方式下,电流异常波动会引起电机过热、振动、输出转矩不稳定.结合单元串联多电平高压变频器在火电厂的实际应用,详细介绍了该类型高压变频器原理及、主回路构成以及控制系统,对实际生产应用中出现的电流波动现象从内部、外部两方面进行分析,并结合生产实例提出了相应的处理对策.对高压变频器电流波动进行分析研究,有助快速、准确地排除故障,保证高压变频器长周期稳定运行,有效发挥节能的作用.
In this paper, the basic reasons of promoting the distributed energy sources system vigorously as well as the status quo of the distributed energy system interconnection in China are expounded. Taking some demonstration projects as examples, the significance of the development of the distributed CCHP （ Combined Cooling, Heating and Power） powered by natural gas and how to improve the relevant policies of distributed energy system continually are discussed too.
出处
《沈阳工程学院学报（自然科学版）》
2014年第2期137-142,共6页
Journal of Shenyang Institute of Engineering:Natural Science
关键词
高压变频器
电流波动
处理对策
Distributed Energy Sources System
Distributed Photovoltaic System
Distributed CCHP Powered by Nat- ural Gas
Micro-grid
