【摘要】 电力电容器是高压直流换流站中的重要噪声源。在换流站设计阶段,必须对电力电容器塔的噪声对周围环境造成的影响进行准确的预测计算。本文在相干声源的叠加原理和声波传播衰减分析的基础上,进行理论公式推导,提出一种计算电容器塔远场噪声辐射指向性的数值计算方法,并对典型的电容器塔模型进行了模拟计算。结果表明,使用简化的相干声源叠加公式进行计算得到的指向性可以很好地模拟计算电容器塔架装置的噪声辐射特性。更多还原

【Abstract】 Power capacitor is the main noise source in the HVDC converter station. In the design stage of the HVDC converter station,the impact of the noise generated by the power capacitor towers on the surrounding environment must be accurately predicted and calculated. In this paper,a kind of directivity algorithm calculation method for far field noise radiation directivity is proposed on the basis of superposition principle of coherent sound sources and attenuation analysis of acoustic wave propagation and the typical capacitor stack is simulated and calculated. It is shown by the result that the directivity obtained by the calculated of simplified coherent sound source superposition formula can well simulate the noise radiation characteristics of the power capacitor tower.更多还原