电测与仪表
電測與儀錶
전측여의표
ELECTRICAL MEASUREMENT & INSTRUMENTATION
2013年
7期
72-76
,共5页
吕晓琴%张秀峰%章春军%方华
呂曉琴%張秀峰%章春軍%方華
려효금%장수봉%장춘군%방화
有源补偿%同相供电%变压器%接线方式%容量
有源補償%同相供電%變壓器%接線方式%容量
유원보상%동상공전%변압기%접선방식%용량
active compensation%cophase supply%transformer%connection mode%capacity
有源补偿同相牵引供电系统,所需补偿装置最小容量与变压器接线方式无关,采用常规接线变压器具有一定的工程意义。利用平衡补偿原理,分析出YN,d11、V, v和Scott常规接线构成的同相供电系统变压器容量需求与负序和无功补偿度、负荷功率因数角、负荷接线角以及变压器移相角有关。通过在指定无功补偿度下,变压器容量利用率与负序补偿度关系曲线,选择合适的接线方式,使其具备最佳经济指标;通过系统仿真波形,验证在正确的控制方法下,无论采用何种常规接线变压器,均能得到较好的补偿特性。
有源補償同相牽引供電繫統,所需補償裝置最小容量與變壓器接線方式無關,採用常規接線變壓器具有一定的工程意義。利用平衡補償原理,分析齣YN,d11、V, v和Scott常規接線構成的同相供電繫統變壓器容量需求與負序和無功補償度、負荷功率因數角、負荷接線角以及變壓器移相角有關。通過在指定無功補償度下,變壓器容量利用率與負序補償度關繫麯線,選擇閤適的接線方式,使其具備最佳經濟指標;通過繫統倣真波形,驗證在正確的控製方法下,無論採用何種常規接線變壓器,均能得到較好的補償特性。
유원보상동상견인공전계통,소수보상장치최소용량여변압기접선방식무관,채용상규접선변압기구유일정적공정의의。이용평형보상원리,분석출YN,d11、V, v화Scott상규접선구성적동상공전계통변압기용량수구여부서화무공보상도、부하공솔인수각、부하접선각이급변압기이상각유관。통과재지정무공보상도하,변압기용량이용솔여부서보상도관계곡선,선택합괄적접선방식,사기구비최가경제지표;통과계통방진파형,험증재정학적공제방법하,무론채용하충상규접선변압기,균능득도교호적보상특성。
The minimum capacity of compensation device in cophase power supply system based on active power filter has no relation with transformer connection, so using normal connection is significant. Under cophase power supply systems with YN, d11, V, v, and Scott transformer, this paper analyzes based on balance compensation principle that the capacity demands have relations with negative and reactive compensation degree, power factor angle, connection angle of load, and phase shift angel. Choosing right transformer connection from the curves between capacity efficiency and negative compensation degree under assigned reactive compensation degree can get the best economic indicator. Finally, with the simulations, it is shown that no matter which transformer is chosen, theoptimal selection can get right compensation characteristics with better control methods.