Method and device for step-by-step identification of synchronous condenser parameters based on sensitivity analysis

A technology of sensitivity analysis and identification method, which is applied in the field of step-by-step identification of parameters of synchronous condensers, can solve problems such as identification algorithm instability, achieve the effects of solving identification instability and multi-valued problems, improving stability, and high precision

Active Publication Date: 2020-08-28
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2
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  • Abstract
  • Description
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Problems solved by technology

However, experiments have shown that it is difficult to solve the problem of instability of the identification algorithm only from the improvement of the algorithm.

Method used

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  • Method and device for step-by-step identification of synchronous condenser parameters based on sensitivity analysis
  • Method and device for step-by-step identification of synchronous condenser parameters based on sensitivity analysis
  • Method and device for step-by-step identification of synchronous condenser parameters based on sensitivity analysis

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Embodiment Construction

[0030] 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.

[0031] The step-by-step identification method and device for synchronous condenser parameters based on sensitivity analysis according to the embodiments of the present invention will be described below with reference to the accompanying drawings. First, the step-by-step identification of synchronous condenser parameters based on sensitivity analysis according to the embodiments of the present invention will be described with reference to the drawings identification method.

[0032] figure 1 It is a flowchart of a step-by-step id...

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Abstract

The invention discloses a step-by-step identification method and device for synchronous phase modifier parameter based on sensitivity analysis, wherein the method comprises the following steps of: acquiring a synchronous phase modifier model required for identification; judging the influence value of the parameters to be identified on the output curve by calculating the sensitivity of the parameters to be identified under different disturbances to obtain a step-by-step identification strategy; The step-by-step identification strategy gradually recognizes the parameters, and finally realizes the step-by-step identification of the synchronous phase modifier parameters. According to the method, the precision is high, and the stability of the identification can be effectively increased.

Description

technical field [0001] The invention relates to the technical field of power grid analysis and calculation, in particular to a method and device for step-by-step identification of synchronous condenser parameters based on sensitivity analysis. Background technique [0002] In China, more and more new energy sources are connected to the power grid in the northwestern region on a large scale and in a concentrated manner. The large-capacity UHV DC transmission system sends new energy to the load centers in the central and eastern regions, which is to promote the consumption of new energy and realize resource optimization. A better way to configure. However, after the UHV DC transmission system is connected to the power grid, the problem of "strong direct current and weak AC" in the power grid is highlighted. This is mainly reflected in: On the one hand, the power grid at the weak receiving end has transient voltage stability problems without maintaining a certain power-on rati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J3/18H02P21/14
CPCH02J3/00H02J3/1885H02J2203/20H02P21/14Y02E40/30
Inventor 王安东孙福春曹志伟李明孙善华郑竞宏郑泽名许光可赵富强张围围李星陈令英
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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