建筑电气
建築電氣
건축전기
BUILDING ELECTRICITY
2014年
10期
41-43
,共3页
配电系统%谐波电流%变压器负荷率%谐波系数K%降容系数D%功率因数%温升%经验公式
配電繫統%諧波電流%變壓器負荷率%諧波繫數K%降容繫數D%功率因數%溫升%經驗公式
배전계통%해파전류%변압기부하솔%해파계수K%강용계수D%공솔인수%온승%경험공식
distribution system%harmonic current%load rate of transformer%harmonic coefficient K%derating factor D%power factor%temperature rise%empirical formula
谐波电流的存在可能使电力变压器绕组线圈承载超过其额定工况的电流，从而导致变压器的额外温升，并使得变压器负载能力下降。本文阐述D， yn11电力变压器在抑制谐波过程中的作用，介绍谐波系数K及电力变压器降容系数D的物理意义，并就电力变压器降容问题的形成机理展开讨论，给出降容系数D的工程计算实例。
諧波電流的存在可能使電力變壓器繞組線圈承載超過其額定工況的電流，從而導緻變壓器的額外溫升，併使得變壓器負載能力下降。本文闡述D， yn11電力變壓器在抑製諧波過程中的作用，介紹諧波繫數K及電力變壓器降容繫數D的物理意義，併就電力變壓器降容問題的形成機理展開討論，給齣降容繫數D的工程計算實例。
해파전류적존재가능사전력변압기요조선권승재초과기액정공황적전류，종이도치변압기적액외온승，병사득변압기부재능력하강。본문천술D， yn11전력변압기재억제해파과정중적작용，개소해파계수K급전력변압기강용계수D적물리의의，병취전력변압기강용문제적형성궤리전개토론，급출강용계수D적공정계산실례。
The existence of the harmonic current may result in the bearing of excessive current by winding coils of power transformer, thereby leading to the additional temperature rise of transformer and reducing its load capacity. The paper describes the effect of the D, yn11 transformer on harmonic suppression, introduces the physical meanings of harmonic coefficient K and transformer derating factor D, discusses the mechanism of transformer derating and provides engineering calculation examples for derating factor D.
