电力系统保护与控制Issue(20)：67-74,8.
正序基波提取器在光伏并网功率调节系统中的应用
Positive-sequence fundamental wave extractor applied in the PV grid-connected power conditioning system
杨艺云 1司传涛 1廖波 2周林2
作者信息
- 1. 广西电网公司电力科学研究院，广西 南宁 530023
- 2. 重庆大学输配电装备及系统安全与新技术国家重点实验室，重庆 400030
- 折叠
摘要
Abstract
The key for PV grid-connected power conditioning system to realize the uniform control of PV grid-connected and active filter is to correctly detect harmonic and reactive current and form grid-connected directive current. Considering distortion and frequency deviation of the actual grid voltage, to get the correct harmonic, reactive current and synchronous sine, the amplitude integral and selective characteristic of frequency are used to form the positive sequence fundamental extractor. The K in the positive sequence fundamental extractor is further analyzed, and then the operation expression of K is derived. If K is chosen properly, positive-sequence fundamental can be got correctly, and synchronous sine and cosine can be got without the phase lock loop. The detecting method for the harmonic, reactive power, and the sum of unsymmetrical components, as well as the grid-connected directive current composing method is analyzed to realize the active power injection, harmonic eliminating and reactive power compensation. The simulation in Matlab/Simulink verifies the correctness of the theoretical analysis. For the effect of K on the positive-sequence fundamental extracting, the miniwatt experiment is conducted to further verify the correctness of the method.关键词
光伏并网功率调节系统/正序基波提取器/谐波检测/K参数/指令电流合成Key words
grid-connected photovoltaic power conditioning system/positive sequence fundamental wave extractor/harmonic detecting/parameter K/directive current composing分类
信息技术与安全科学引用本文复制引用
杨艺云,司传涛,廖波,周林..正序基波提取器在光伏并网功率调节系统中的应用[J].电力系统保护与控制,2013,(20):67-74,8.
