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Flow electrification in high power transformers: BTA effect on pressboard degraded by electrical discharges; Fuzzy logic-based relaying for large power transformer orotection;Grounding insulation fault monitoring of power transformers using Bergeron's method; Handling three-winding transformers and loads in short circuit analysis by the admittance summation method; HARMONICS MITIGATION IN HIGH CURRENT MULTIPULSE CONTROLLED TRANSFORMER- RECTIFIERS……
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1前言2013年2月份,遼寧易發(fā)式電氣設(shè)備有限公司中標一臺沙特44.8MVA電力變壓器,該臺變壓器為高、低壓側(cè)雙調(diào)壓,高壓側(cè)為無勵磁調(diào)壓,低壓側(cè)為有載調(diào)壓。根據(jù)此臺變壓器特點及技術(shù)要求,其低壓側(cè)調(diào)壓采用串聯(lián)變壓器調(diào)壓方式。采用串聯(lián)變壓器調(diào)壓的主要優(yōu)點為:1調(diào)壓范圍廣;2主變可以在恒磁通下工作,充分利用了材