大容量無角接繞組自耦變壓器縱向絕緣結(jié)構(gòu)分析計(jì)算
司秉娥1,馮新文2
(1 特變電工沈陽變壓器集團(tuán)有限公司,遼寧 沈陽 110144;2 沈陽金杯延鋒汽車內(nèi)飾系統(tǒng)有限公司,遼寧 沈陽 110179)
摘 要:對三相五柱式?jīng)]有平衡繞組(沒有角接繞組)的 YNa0 聯(lián)接組別的自耦變壓器進(jìn)行縱絕緣結(jié)構(gòu)分析。針對自耦變壓器自身結(jié)構(gòu)特點(diǎn),應(yīng)用波過程及電場計(jì)算軟件著重對高壓線圈與調(diào)壓線圈(不同結(jié)構(gòu))主縱絕緣結(jié)構(gòu)進(jìn)行計(jì)算,最終確定線圈形式、匝絕緣厚度、段間油道等結(jié)構(gòu)參數(shù),并對其絕緣弱點(diǎn)區(qū)域采取了絕緣加強(qiáng)措施,保證了絕緣結(jié)構(gòu)的安全可靠。
關(guān)鍵詞:自耦變壓器;波過程;電場計(jì)算;線圈形式;匝絕緣
中圖分類號:TM403 文獻(xiàn)標(biāo)識碼:A 文章編號:1007-3175(2019)03-0064-04
Analytical Calculation of High-Capacity Autotransformer Longitudinal Insulation Structure Without Corner Joint Winding
SI Bing-e1, FENG Xin-wen2
(1 TBEA Shenyang Transformer Group Co., Ltd, Shenyang 110144, China;
2 Shenyang Jinbei Yanfeng Automotive Interiors Systems Co., Ltd, Shenyang 110179, China)
Abstract: The paper analyzed the longitudinal insulation structure of three-phase five limbs core without balance winding (without corner joint winding) YNa0 connection group autotransformer. Aiming at the autotransformer’s feature, this paper calculated main and longitudinal insulation structures of high tension coil and regulating coil (different structure) with the wave process and electric field simulation software, and finally defined the structural parameter such as coil format, interturn insulation thickness, oil gap between windings disks and so on. The insulation measures were strengthened in those weak insulation areas to ensure the safety and reliability of insulation structure.
Key words: autotransformer; wave process; electric field calculation; coil format; turn insulation
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