| 摘要 |
<p>The present invention relates to a steady-state processing method and device for digital measurement or telemetry of an electric power system, including: inputting a data sequence {yk} = {yk, yk-1,... yk-N} of the digital measurement or telemetry of a physical quantity y; according to the data sequence {yk}, calculating the n+1 order derivative of y, n = 0, 1,..., until a formula (I) is satisfied, so as to determine n; performing variable substitution with a formula (II), and calculating a data sequence {xk}; judging that a current numerical value xk is located in a transient-state process or a steady-state process; when the current numerical value xk is judged to be located in the steady-state process, calculating an average value as a steady-state value according to {xk}; and performing integral inverse transformation, and solving the steady-state value of y from. Also proposed is another steady-state processing method and device for digital measurement or telemetry of an electric power system by adopting a Kalman filter to substitute for the above derivation process. The present invention is applicable to two conditions of the field of digital measurement or telemetry, and performs accurate steady-state processing in the whole process of determining the physical quantity of an electric power system.</p> |
