摘要
为了利用虚拟仪器进行交流220V/50Hz电网电力品质测量,需要能够与虚拟仪器硬件产品(PXI-4472B)的接口特性相匹配的电压传感器。在高频变压器和电压互感器不能满足测量准确性的情况下,经过多次试验,设计了一套不平衡-平衡转换式电阻分压器,该分压器具有体积小、重量轻、精度高、安全性好等特点,取得了很好的测试结果,并可扩展应用于其他接口特性的虚拟仪器硬件产品。
In order to measure the power quality of 220V/50Hz network with virtual instrument, a voltage sensor matching the I/O characteristics of virtual instrument （PXI-4472B） is needed. Since pulse transformer and potential transformer cannot satisfy the measurement precision requirement, an imbalance-balance resistance-type voltage divider was designed after many experiments. With this small, light, precise and secure voltage divider, a satisfactory result was achieved. This divider can also be extended to match virtual instruments with different I/O characteristics.
出处
《中国测试技术》
2008年第5期82-84,共3页
CHINA MEASUREMENT & TESTING TECHNOLOGY
关键词
电力品质
虚拟仪器
伪差分
电阻分压器
不平衡-平衡转换
电压互感器
高频变压器
Power quality
Virtual instrument
Pseudo-differential
Resistance-type Voltage divider
Imbalance-balance
Potential transformer
Pulse transformer
