Robust estimation state estimating method based on maximum index absolute value target function

A technology of robust state estimation and objective function, which is applied in AC network circuits, electrical components, circuit devices, etc.

Active Publication Date: 2013-01-09
TSINGHUA UNIV +1
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  • Description
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Problems solved by technology

However, these robust state estimation methods generally have the characteristics of insufficient

Method used

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  • Robust estimation state estimating method based on maximum index absolute value target function
  • Robust estimation state estimating method based on maximum index absolute value target function
  • Robust estimation state estimating method based on maximum index absolute value target function

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Embodiment Construction

[0017] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0018] like figure 1 As shown, the robust state estimation method based on the maximum exponential absolute value objective function in the embodiment of the present invention includes the following steps:

[0019] Step A: providing a basic model of a maximum exponential absolute value state estimation (MEAV) based on a maximum exponential absolute value objective function.

[0020] Specifically, the basic model of MEAV proposed by the present invention is as follows

[0021] max x ...

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Abstract

The invention provides a robust estimation state estimating method based on a maximum index absolute value target function. The robust estimation state estimating method comprises the steps of: providing a robust state estimation basic model based on the maximum index absolute value target function; introducing an auxiliary variable into the robust state estimation basic model based on the maximum index absolute value target function to obtain a robust state estimation equivalent model based on the maximum index absolute value target function; and by using a primal-dual interior point algorithm, solving the robust state estimation equivalent model based on the maximum index absolute value target function. Proved through example analysis, the robust estimation state estimating method has the advantages of strong robustness and high computing efficiency, and better engineering application prospect.

Description

technical field [0001] The invention belongs to the field of electric power system scheduling automation, and in particular relates to a method for estimating a robust state based on an objective function of the maximum exponent absolute value. Background technique [0002] Power system state estimation is the foundation and core of energy management systems. Now almost every large dispatch center has installed a state estimator, and state estimation has become the cornerstone of the safe operation of the power grid. Since state estimation was first proposed by foreign scholars in 1970, people have studied and applied state estimation for more than 40 years, and various state estimation methods have emerged during this period. [0003] At present, the most widely used state estimation at home and abroad is the weighted least squares (WLS) method. The WLS model is simple and easy to solve, but its robustness is poor. In order to enhance the tolerance, there are generally t...

Claims

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Application Information

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IPC IPC(8): H02J3/00
Inventor 刘锋陈艳波郑宽何光宇梅生伟黄良毅付艳兰
Owner TSINGHUA UNIV
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