电力自动化设备
電力自動化設備
전력자동화설비
ELECTRIC POWER AUTOMATION EQUIPMENT
2009年
12期
113-115,118
,共4页
高压侧%测量电源%直接测量%间接测量%磁饱和%电压反馈
高壓側%測量電源%直接測量%間接測量%磁飽和%電壓反饋
고압측%측량전원%직접측량%간접측량%자포화%전압반궤
high-voltage side%power source for measuring%direct measuring%indirect measuring%magnetic saturation%voltage feedback
分析了高压侧测量用电源从母线电流取能的供电方案,针对高压母线电流动态变化范围大的特点,设计互感器时使铁心大多情况下处于饱和状态,当母线电流较小时用锂电池作备用电源辅助供电,当母线电流较大时作为能源,同时对锂电池充电.介绍了2种具体的电源方案:一是采用稳压管吸收多余电流的简便设计,可以限制输出电压,该电路适用于100 mW以下的低功耗电路,电源体积较小;二是采用晶闸管限定交流输入电压峰值,对于母线电流变化范围大的应用场合,控制了整流电路输出电压上限,宽范围直流输入电压采用DC/DC稳压输出.
分析瞭高壓側測量用電源從母線電流取能的供電方案,針對高壓母線電流動態變化範圍大的特點,設計互感器時使鐵心大多情況下處于飽和狀態,噹母線電流較小時用鋰電池作備用電源輔助供電,噹母線電流較大時作為能源,同時對鋰電池充電.介紹瞭2種具體的電源方案:一是採用穩壓管吸收多餘電流的簡便設計,可以限製輸齣電壓,該電路適用于100 mW以下的低功耗電路,電源體積較小;二是採用晶閘管限定交流輸入電壓峰值,對于母線電流變化範圍大的應用場閤,控製瞭整流電路輸齣電壓上限,寬範圍直流輸入電壓採用DC/DC穩壓輸齣.
분석료고압측측량용전원종모선전류취능적공전방안,침대고압모선전류동태변화범위대적특점,설계호감기시사철심대다정황하처우포화상태,당모선전류교소시용리전지작비용전원보조공전,당모선전류교대시작위능원,동시대리전지충전.개소료2충구체적전원방안:일시채용은압관흡수다여전류적간편설계,가이한제수출전압,해전로괄용우100 mW이하적저공모전로,전원체적교소;이시채용정갑관한정교류수입전압봉치,대우모선전류변화범위대적응용장합,공제료정류전로수출전압상한,관범위직류수입전압채용DC/DC은압수출.
The schemes of power source for the measuring at high-voltage side are analyzed.As the dynamic change of high-voltage bus current is big,the iron core of designed current transformer should be saturated in most cases.Lithium battery is used as the auxiliary power supply when the bus current is small,otherwise recharged.Two designs are introduced.The simple one uses stabilivolt to limit the output voltage,with smaller size and suitable for low power consumption applications of less than 100 mW.The other one uses SCR to limit the AC input voltage peak for controlling the maximum output voltage of rectifier,against the large bus current variation.The DC/DC converter is used to stabilize DC input voltage variation.
