摘要
风电场的低电压保护在必要时使风电场脱网以保证风机的安全,而电网则要求风电场在故障后一段时间内继续运行以保持电压的稳定,解决这个矛盾的途径是使风电场具备一定的低电压穿越能力。从整个风电场的角度分别对无功补偿装置采用电容器组、静止无功补偿装置SVC的情况进行了仿真分析和比较。结果表明,两者都能提高电场的低电压穿越能力,并且SVC能够维持正常运行时风电场出口的节点电压稳定。
The low-voltage protection of wind farms will make wind farms off the power networks to ensure the safety of wind tur-bines, but the guideline of power networks is that wind turbines keep operation for a period of time without off-grid after the voltagesof power networks drop. The way to resolve this contradiction is to enhance the low-voltage ride through capability of wind farms.This paper carried out the simulation analysis and comparison of reactive power compensation devices with capacitor bank and staticvar compensation （SVC） respectively from the perspective of the entire wind farm. The results show that both of them could improvethe low-voltage ride through capability of wind farms, and the SVC could maintain normal voltage stability of the wind farm exports.
出处
《电工电气》
2012年第9期6-9,共4页
Electrotechnics Electric
关键词
风电场
无功补偿
低电压穿越能力
固定电容器
静止无功补偿装置
wind farms
reactive power compensation
low voltage ride through capability
fixed capacitors
static var compensation
