摘要
高压直流输电系统中换流变压器冷却器负荷占站用电负荷一半以上,因此降低换流变压器冷却器能耗对降低高压直流输电损耗具有关键意义。通过分析贵广I回冷却器控制策略,发现其3个节能缺陷,提出基于负载率的多级控制的新方法。通过现场试验,新策略不影响换流变压器可靠性和寿命,同时冷却器功率降低36.7%,对现有高压直流输电系统站用电节能降耗具有重要参考价值。
The load of converter transformer cooler exceeds half of all the station load in HVDC system, so to reduce the loss of the cooler is the key to reduce the loss of HVDC system. Analyzing the control strategy of Guizhou-Guangdong I HVDC Line , this paper finds three defects, and gives a new method of multi-stage based of load rate. In the field test, the load of cooler can be reduced 36.7% without reducing reliability and life of transformer, giving reference for the HVDC station reducing its loss.
出处
《南方电网技术》
2013年第5期43-45,共3页
Southern Power System Technology