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用《人工中性点》法测量对称三相电路的功率在多数电工学书中没有讨论,少数教材如湖南大学、合肥工业大学合编的电工学上册曾提到《人工中性点》的问题,但是究竟怎样建立《人工中性点》,其测量的方法和根据的原理是什么,书中没有具体说明。另外考虑到实践中仍常用此法测功率,故本文试图从理论方面作一简要分析,以期消除对《人工中性点》法的可靠性的疑虑。
The use of “artificial neutral point” method to measure the symmetrical three-phase circuit power is not discussed in most electrical engineering books, a small number of textbooks such as Hunan University, Hefei University of Technology compiled a book on electrical engineering has mentioned the “artificial neutral point” problem , But how to establish the “artificial neutral point”, the measurement method and the basis of what is the principle, the book does not specify. In addition, taking into account the practice of this method is still commonly used in power measurement, so this paper attempts to make a brief analysis from the theoretical aspects, in order to eliminate the “artificial neutral point” method of doubt reliability.