The difficulty of which is the design of in-circuit test unit three-wire test method and six-wire test method are used to solve effectively the key problem that isolates measured components from others on measured electronic function module in the paper .

其中，路内测试单元的设计是难点，本文采用 三 线测试 法和六 线测试法有效地解决了被测器件与电子功能模件上其他器件隔离的关键问题。

The power quality of three-phase three-wire power systems is improved using a detection method based on the FBD method to measure the reactive power harmonics and negative-sequence currents .

为了提高不平衡三相 三 线 制供电系统的电能质量，先将基于FBD法的补偿电流检测 方法进行推广，使其能够检测出三相电路中的谐波、无功及负序电流；