高压直流输电系统中C型阻尼滤波器的优化模型及其算法

OPTIMIZATION MODEL AND ALGORITHM OF TYPE-C DAMPED FILTER IN HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM

为综合解决高压直流输电系统中的谐波和无功补偿问题,根据C型阻尼滤波器既可抑制低次谐波,又兼具高通滤波性能,并且基波有功功率损耗几乎为零的特性,该文提出了使用C型阻尼滤波器组滤波的新方案,解决了高压直流输电工程中换流器交流侧的5、7、11、13次谐波的问题。建立了优化数学模型,并提出采用内罚函数法和模式搜索法解决C型阻尼滤波器组参数优化配置问题。并以某高压直流输电系统交流侧换流站为例进行参数优化选择,得出结论证明,该方法具有提供无功补偿,有功损耗小和有效抑制谐波等优越性。

In order to solve the problems of harmonics elimination and reactive power compensation in HVDC transmission system, a new method of adoptint type-C damped filter group to eliminate harmonics is presented in this paper,which can eliminate the 5th,7th,11th,13th harmonics in the converter of HVDC.Type-C damped filter not only can eliminate lower harmonics but also has high pass characteristic,and its active power loss is nearly zero.Then the corresponding optimization mathematic model is proposed.And adopting penalty function method and mode-researching method to solve the problem of optimization arrangement is also presented. In this paper,the filter parameter optimization is selected by taking the example of the converter station in a HVDC transmission system,and the calculation result shows that this method possesses the superiority of providing reactive power compensation,low active power loss and elimination harmonics effectively.