±660kV宁东-山东直流输电工程交流滤波器暂态额定值计算

Transient Rating Calculation of AC Filters in ±660 kV HVDC Transmission Project from Ningdong to Shandong

换流站交流滤波器用以滤除换流器产生的谐波,并补偿换流器运行中吸收的无功功率。为了保护交流滤波器中的电抗器和电阻器设备,需要配置适当的避雷器。根据工程规范书要求,用最恶劣的运行条件计算了±660kV宁东-山东直流输电工程交流滤波器电容、电抗、电阻等元件和避雷器的暂态电压、电流情况,确定了避雷器的配置参数及各元件设备的绝缘水平。结果表明:通过合理的配置避雷器,可以将大部分元件端子的操作冲击耐受水平限制在350kV以下,能够有效地降低工程造价。提供的数据为±660kV宁东-山东直流输电工程交流滤波器设备的设计和制造提供了重要的依据。

It is necessary to set arresters in AC filters to protect the reactors and resistors from the overvoltage.According to the requirements of ±660 kV HVDC transmission project from Ningdong to Shandong,the transient voltages and currents of the components of AC filters,including capacitors,reactors,resistors and arresters,were calculated to determine the parameters of arresters and the insulation levels.The results show that,by configuring the arresters properly,the switching impulse withstand levels of most components terminals are limited in 350 kV,which can reduce the cost of project.The data in this paper are the important references for the design and manufacture of the AC filter devices in ±660 kV HVDC transmission project from Ningdong to Shandong.