交直流混联输电系统多谐波源的分析方法研究

Studies on analysis methods of multi-harmonic sources in AC/DC hybrid transmission system

研究了交直流混合输电系统的多谐波源的分析方法。通过比较现有高压直流系统谐波分析方法,提出了一种适用于交直流混联输电系统多谐波源的新方法———调制迭代谐波分析法(MIHA)。该方法将调制理论和迭代谐波分析法(IHA)相结合,不仅合理模拟换流站的非线性行为,解决了交直流系统的接口问题,同时通过迭代使谐波计算更准确。

The analysis methods of multi-harmonic sources in AC/DC hybrid transmission system are researched. Based on the comparison of the current analysis methods of harmonics in high voltage direct current （HVDC） transmission system, a new method named modulation and iterative harmonic analysis （MIHA） method for multi-harmonic sources system is proposed. In this method the modulation theory is integrated with iterative harmonic analysis （IHA）, so not only the nonlinear behavior of a converter station is rationally simulated and the interface between AC and DC systems is resolved. but also the calculation of harmonics can be more accurate by means of iteration.