摘要
以500kV输电线路直流融冰为目的,提出一种基于IGBT的移动式多用途直流电源。整套装置由4台电源车构成,容量20MW。单台电源变流部分由6个结合斩波回路的电压源型换流器VSC模块构成,通过副边为6绕组的变压器接入35kV系统。应用功率单元模块,通过紧凑化设计将单台电源集成于半挂式平板拖车上,实现了装置的整体移动。采用双层结构的PWM整流稳压结合恒流斩波的控制方式和基于系统级、装置级和单元变流器级的分层式保护设置方案实现现场应用。结合现场实施经验,提出了完整的融冰试验方案。
For 500 kV transmission line DC deicing,a displaceable multi-purpose DC deicer based on IGBT （Insulated Gate Bipolar Transistor） is presented. The 20 MW DC deicer is composed of four power vans. Each van has six VSC（Voltage Sourced Converter） with chop circuit,which are connected to 35 kV system through the six secondary windings of transformer. Compact design is applied for fitting the power supply unit in the van. Double-deck structure is adopted for implementing the control mode of PWM（Pulse Width Modulation） rectifying voltage regulator combined with constant current chopper. The layered protection scheme is planned for site application：system layer,equipment layer and converter layer. The deicing test program is proposed based on site implementation experiences.
出处
《电力自动化设备》
EI
CSCD
北大核心
2010年第3期111-115,共5页
Electric Power Automation Equipment
