摘要
针对海上风电场电气接线方案的优化比选问题,提出了一种基于低频输电和高压直流输电技术的改进方案,该方案涉及的电气设备包括风力发电机、低频电缆、低频箱式变压器、整流器、直流电缆、逆变器、工频电缆和工频升压变压器,采取每台风机配置1台低频箱式变压器和1台海上整流器的接线方式。所提方案减少了线路总损耗,提高了输电效率,既能够增加风电场接入电网的传输距离和传输容量,又能够改善风电场接入电网的电能质量,且降低了工程造价,节约了投资,尤其适合应用于大规模海上风电场。
In view of the optimization and selection of electrical connection schemes for an offshore wind farm,we propose an optimized scheme based on low frequency and HVDC transmission technology.The devices of the proposed scheme involve wind power generator,low frequency cable,low frequency box-type transformer,rectifier,DC cable,inverter,power frequency cable and transformer.In the adopted electrical connection scheme,each wind power generator is disposed with a low frequency transformer and an offshore rectifier.The proposed scheme reduces the total loss of transmission line,increases the efficiency,distance and capacity of transmission,and improves the power quality as well.Meanwhile,the combination of low frequency and HVDC transmission technology reduces the construction cost,which can be applied in large scale offshore wind farms.
出处
《人民长江》
北大核心
2011年第3期39-42,共4页
Yangtze River
关键词
低频输电
高压直流输电
电气接线
海上风电场
low frequency transformer
HVDC
electric connection
offshore wind farm
