【摘要】：變電站電暈放電會(huì)導(dǎo)致變電站工頻電磁場(chǎng)及無(wú)線電干擾水平超標(biāo),對(duì)周圍環(huán)境造成噪音和電磁污染,影響居民生活和工程的環(huán)境評(píng)價(jià),因此必須對(duì)其進(jìn)行治理。根據(jù)相關(guān)設(shè)備、金具的實(shí)際布置形式和外形結(jié)構(gòu)圖紙,結(jié)合變電站電暈實(shí)測(cè)結(jié)果,同時(shí)考慮相間影響和周圍帶電導(dǎo)體作用,采用有限元軟件ANSYS建立了220 k V變電站典型放電位置的三維電場(chǎng)有限元仿真計(jì)算模型,計(jì)算了金具表面的電場(chǎng)分布,得到了其表面的場(chǎng)強(qiáng)最大值和分布規(guī)律。根據(jù)計(jì)算結(jié)果優(yōu)化了金具的結(jié)構(gòu)、尺寸和參數(shù),并提出了電暈噪聲抑制措施。仿真結(jié)果表明采取優(yōu)化和抑制措施后,金具的電場(chǎng)分布畸變有較大改善,表面最大場(chǎng)強(qiáng)下降到3 000 V/mm以下。研究成果為變電站的防暈降噪設(shè)計(jì)提供了重要參考,為綠色電網(wǎng)和變電站的建設(shè)提供了依據(jù)。
[Abstract]:The corona discharge in substation will lead to the excessive level of power frequency electromagnetic field and radio interference in substation, which will cause noise and electromagnetic pollution to the surrounding environment and affect the residents' life and environmental evaluation of the project. Therefore, it is necessary to control the electric field and radio interference level in substations. According to the actual layout form and shape structure drawing of the related equipment and hardware, combined with the measured results of the substation corona, the influence of the phase between phases and the action of the surrounding charged conductor are considered at the same time. The three dimensional electric field simulation model of the typical discharge position in 220kV substation is established by using the finite element software ANSYS. The electric field distribution on the surface of the metal tool is calculated, and the maximum value and the distribution rule of the electric field on the surface are obtained. According to the calculation results, the structure, size and parameters of the metal tool are optimized, and the corona noise suppression measures are put forward. The simulation results show that the electric field distribution distortion of the metal is greatly improved and the maximum surface field strength decreases to less than 3 000 V/mm after the optimization and suppression measures are taken. The research results provide an important reference for the design of anti-corona and noise reduction in substations, and provide a basis for the construction of green power grids and substations.
【作者單位】： 南方電網(wǎng)科學(xué)研究院;
【分類號(hào)】：TB535;TM63

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