基于SOGI-FLL算法的油田电网动态无功补偿对策研究

Dynamic Reactive Power Compensation Measures Based on Oil Field Power SOGI-FLL Algorithm

摘要:

为了解决油田无功补偿装置爆电容现象,本课题在现有无功补偿装置存在问题的基础上,提出了采用晶闸管投切电容器与静止无功发生器相结合的补偿方案；将SOGI－FLL算法应用于电压精准锁相和无功功率的准确计算中,其结果分别用于确定Matlab仿真模型中晶闸管投切电容器的投入时刻和提供静止无功发生器的控制参考信号,从而实现谐波和无功电流的有效控制；仿真结果表明,该方案不仅实现了无功功率的有效补偿,而且进一步降低了油田配电网无功损耗,提高了功率因数。

Abstract:

In order to solve the electric capacity of oil field reactive power compensation device, based on the existing problems of reactive power compensation device, a compensation scheme combining thyristor switching capacitor and static var generator is proposed in this paper. And the SOGI-FLL algorithm is applied to the exact calculation of the voltage precision lock-in and reactive power. The outcome are used to determine the capacitor input time of the Matlab simulation model of thyristor switching capacitor and to provide the control reference signal of the static var generator, So as to realize effective control of harmonic and reactive current. The simulation results show that the scheme not only realizes the reactive power compensation effectively, but also reduces the reactive power loss of oil field distribution network and improves the power factor.