电测与仪表
電測與儀錶
전측여의표
ELECTRICAL MEASUREMENT & INSTRUMENTATION
2013年
12期
9-12
,共4页
王晓东%江小强%王晔%罗冉冉%郭清营
王曉東%江小彊%王曄%囉冉冉%郭清營
왕효동%강소강%왕엽%라염염%곽청영
电能表%工频磁场%功率因数%无负载试验
電能錶%工頻磁場%功率因數%無負載試驗
전능표%공빈자장%공솔인수%무부재시험
Watt-hour meter%power-frequency magnetic field%power factor%test of no-load condition
通过分析了工频磁场对单相电子式电能表的影响机理,以单相电子式电能表现场安装环境为基础,在实验室搭建仿真平台,对单相电子式电能表进行工频磁场环境下的无负载实验,寻找单相电子式电能表计量准确性与励磁电流、功率因数角的关系,确定工频磁场对单相电子式电能表最不利的相位和方向的条件,同时提出减小工频磁场对单相电子式电能表计量准确性影响的建议。
通過分析瞭工頻磁場對單相電子式電能錶的影響機理,以單相電子式電能錶現場安裝環境為基礎,在實驗室搭建倣真平檯,對單相電子式電能錶進行工頻磁場環境下的無負載實驗,尋找單相電子式電能錶計量準確性與勵磁電流、功率因數角的關繫,確定工頻磁場對單相電子式電能錶最不利的相位和方嚮的條件,同時提齣減小工頻磁場對單相電子式電能錶計量準確性影響的建議。
통과분석료공빈자장대단상전자식전능표적영향궤리,이단상전자식전능표현장안장배경위기출,재실험실탑건방진평태,대단상전자식전능표진행공빈자장배경하적무부재실험,심조단상전자식전능표계량준학성여려자전류、공솔인수각적관계,학정공빈자장대단상전자식전능표최불리적상위화방향적조건,동시제출감소공빈자장대단상전자식전능표계량준학성영향적건의。
The influence mechanism of power-frequency magnetic field on single phase Watt-hour meter is analyzed. On the basis of meter installation environment, the simulation platform is set up in the laboratory. The power factor test under no-load condition is conducted under the environment of power-frequency magnetic field to find the relationship of Watt-hour meter error to exciting current and power factor angle. The worst conditions of phase and the direction for Watt-hour meter measurement in the environment are determined, and the suggestion that reduce the influence of power-frequency magnetic field on electrical meter measuring accuracy is made.