噪声与振动控制
譟聲與振動控製
조성여진동공제
NOISE AND VIBRATION CONTROL
2014年
6期
112-116,139
,共6页
吴健%吴九汇%耿明昕%弟泽龙%刘哲超
吳健%吳九彙%耿明昕%弟澤龍%劉哲超
오건%오구회%경명흔%제택룡%류철초
声学%超高压输电线路%电晕可听噪声%Kirchhoff公式%理论预估模型%降噪
聲學%超高壓輸電線路%電暈可聽譟聲%Kirchhoff公式%理論預估模型%降譟
성학%초고압수전선로%전훈가은조성%Kirchhoff공식%이론예고모형%강조
acoustics%EHV transmission lines%corona audible noise%Kirchhoff formula%theoretical prediction model%noise reduction
研究基于Kirchhoff公式建立起的电晕可听噪声理论预估模型在实际中的适用性。线路自身参数及所处环境参数都对电晕可听噪声产生影响,根据已有模型,分析计算导线半径、导线架设高度、相间距、分裂子导线数目、海拔等因素的影响。结果表明,采用分裂导线和增大导线半径可以明显降低噪声,且增加分裂子导线数目有助于降低噪声,而提高导线架设高度、改变相间距或分裂圆半径不具有降噪效果,同时计算表明电晕可听噪声随海拔的升高而加剧。所得规律有助于指导输电线路的规划设计。
研究基于Kirchhoff公式建立起的電暈可聽譟聲理論預估模型在實際中的適用性。線路自身參數及所處環境參數都對電暈可聽譟聲產生影響,根據已有模型,分析計算導線半徑、導線架設高度、相間距、分裂子導線數目、海拔等因素的影響。結果錶明,採用分裂導線和增大導線半徑可以明顯降低譟聲,且增加分裂子導線數目有助于降低譟聲,而提高導線架設高度、改變相間距或分裂圓半徑不具有降譟效果,同時計算錶明電暈可聽譟聲隨海拔的升高而加劇。所得規律有助于指導輸電線路的規劃設計。
연구기우Kirchhoff공식건립기적전훈가은조성이론예고모형재실제중적괄용성。선로자신삼수급소처배경삼수도대전훈가은조성산생영향,근거이유모형,분석계산도선반경、도선가설고도、상간거、분렬자도선수목、해발등인소적영향。결과표명,채용분렬도선화증대도선반경가이명현강저조성,차증가분렬자도선수목유조우강저조성,이제고도선가설고도、개변상간거혹분렬원반경불구유강조효과,동시계산표명전훈가은조성수해발적승고이가극。소득규률유조우지도수전선로적규화설계。
The applicability of the theoretical prediction model of corona audible noise based on Kirchhoff formula is studied. Both of line parameters and environmental parameters can affect the corona audible noise. Based on the existing models, the influence of different line parameters such as the line height, the line radius, the line phase spacing and elevation etc. on the corona audible noise is analyzed. The results show that the noise can be reduced significantly by using bundled conductors and increasing the line radius. On the other hand, increasing line height, changing the phase spacing and splitting radius have no noise reduction effect. Meanwhile, the computation results show that the corona audible noise can be exacerbated with increasing of the elevation. This conclusion may be helpful to the planning and design of transmission lines.