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China Y-∆ Tap Changer

#1
转换组合式线性分接开关
公开了一种端匝固态开关(ETSS)变压器抽头,其利用高速固态开关网络来选择变压器调节的端匝引线或多个非隔离抽头中的一个。绕过并连接所选择的抽头,同时断开先前选择的抽头,承载变压器负载电流的单个输出导体。ETSS有效地改变了对与固态交换网络接口的可能抽头之一的引用。连接到ETSS的相同变压器调节绕组也可以与慢速机械开关分接开关(LTC)串联。ETSS选择调节绕组上的一个连接点,而LTC操作选择第二个点。
A difference voltage is produced, depending on the number of turns between the ETSS selected tap and the LTC selected tap. The sign of the difference in voltage depends on whether the ETSS selected tap is higher or lower than the LTC selected tap. The difference or tap selected voltage is in series with the transformer load current. In one embodiment, the high-speed solid-state switching network uses a "Staggered Progression of Solid-State Switches" (SPSS) to select one of a number of non-isolated taps on a transformer regulating winding and connect the selected tap in series with the load circuit. A switching network arranged according to the method SPSS reduces the necessary total switch power rating, and steady-state losses. ETSS can accomplish modulation of the tap-selected voltage about the nominal value established by the LTC
模型说明
WST□ - □/□ - □╳□
   W:断路
   S:三相或D为单相
   T:线性型龙头架
   □:电压调节模型
   □:额定电流
   □:额定电压
   □:攻丝头数量
   □:攻丝位置数
电压调节模型
   我:终点
   II:中心点
   III:中性点
  IV:Y-△转化
  V:串并联连接
样品技术数据
规格WST 30WST 63WST 125WST 250WST 400WST 500
阶段数量阶段
连接方式中心点(Ⅱ)中性点(Ⅲ)终点(Ⅰ)
额定电流(A)3063125250400500
短路容量热稳定电流(KA / 2s)0.71.62.53.7545
动态稳定电流(KA)1.846.259.3751012.5
          额定频率50~60
绝缘等级(KV)额定电压10KV20KV35KV
工频耐压(50Hz / 1min)42KV55KV95KV
脉冲(1.2 /50μs的)75KV125KV250KV
密封性能(KPa / 24h)60
机器寿命(数千次)2中国Y-Δ分接开关
网址:http://www.jinlielectricpower.com/linear-tap-changer/y-tap-changer/
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