Abstract: The accurate identification of leverage measurement（LM） has been the bottleneck of precision improvement of state estimation for many years. This paper deeply analyzes and explores the relevant issues about the important measurement type of LM. Firstly, the connotation consistency of the two definitions on LM is analyzed. Secondly, the characteristics of LM are explored from both algebraic and geometric aspects. The proposition that a measurement infinitely closing to the column space of Jacobi matrix indeed is LM is strictly proven. On this basis, this paper proposes a new identification method of LM using the power flow solution and the improved generalized potential indicator. Compared with other methods, the proposed method can significantly improve the correct identification rate of multiple LMs. The example results verify the feasibility and validity of the proposed method.