电力变压器局部放电超声定位中的等效声速及优化算法

Equivalent sound velocity and optimizing algorithm of partial descharge location in power transformers

本文提出了电力变压器中局部放电时超声信号传播的等效声速概念，并论证了等效声速的稳定性。在此基础上，本文建立了局放超声定位的三个数学模型，并给出了算法。实际的定位算例说明，本文给出的局放定位算法是有效的，它优于传统的局放超声定位算法。

In this paper, the concept of equivalent sounad velocity is defined and its stability is discussed. Based on the stability of equivalent sound velocity, three mathematical models for the location of partial discharge source in a power transformer are constructed and an algorithm by using optimization method is developped.The algorithm has been proved to be effective in practical locating examples.