基于派克变换算法的空冷电厂，厂用电谐波分析

对空冷发厂厂用电系统的谐波进行了测试，依据空冷变低压侧变频器的谐波测试数据，采用派克变换算法对空冷变高压侧谐波进行了合成。结果表明，当2台接线为D/yn11和Y/yn12的空冷变并联运行时，低压变频器产生的谐波在高压侧能够有效抵消，对发电机和厂用高压设备无显著影响

Analysis of Harmonics in Air-Cooling Power Plants Based on the Park Transformation Algorithm

This paper tests the harmonics of plant service power system in air-cooling power plant, and adopts Park transform algorithm to caculate the harmonic superposition at the high voltage side of the air-cooling transformers based on the the harmonic measurement data of the frequency converters at the low voltage. The result shows that the harmonic currents can be effectively counteracted at the high-voltage side when the two transformers with D/yn11 and Y/yn12 connection symbol operate in parallel, which does little damage to the generator and high voltage equipments in the plant service system.