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Power grid static stability analysis method considering meteorological factors

A static stability and analysis method technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve problems such as difficult to accurately solve the static stability of the line, and achieve the effect of accurate solution

Inactive Publication Date: 2020-11-13
NR ELECTRIC CO LTD +1
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Problems solved by technology

In practical applications, meteorological parameters along the line have significant temporal and spatial variation characteristics, resulting in constant changes in conductor temperature, and it is difficult to accurately calculate the static stability of the line

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  • Power grid static stability analysis method considering meteorological factors
  • Power grid static stability analysis method considering meteorological factors
  • Power grid static stability analysis method considering meteorological factors

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Embodiment Construction

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] Such as figure 1 As shown, it is a flow chart of the steps of the calculation method of the present invention, and the steps are as follows: (1) acquisition of meteorological data, (2) line segment model selection, (3) line parameter calculation, (4) static stability analysis of the power grid. Through the combination of line parameter calculation and power flow calculation in the power system, the equivalent parameters of the line are calculated, and then the static stability characteristics of the power system are obtained.

[0015] Step (1) Obtain grid meteorological data, and obtain ambient temperature, wind speed, wind direction angle, and solar radiation angle according to the meteorological data parameters.

[0016] Step (2) The line segmentation model is proposed based on the spatial latitude, mainly including the firs...

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Abstract

The invention discloses a power grid static stability analysis method considering meteorological factors. The power grid static stability analysis method comprises the following steps: (1) acquiring grid point meteorological data; (2) selecting a line segmentation model; (3) calculating line parameters; and (4) analyzing power grid static stability, and according to the CIGRE standard heat balanceequation and the relationship between the line parameters and the conductor temperature, establishing a power grid power flow model and a decomposition coordination algorithm considering the space-time distribution of the meteorological parameters. According to the invention, the electrical parameters of the line can be accurately obtained according to the meteorological conditions around the line; and according to the accurate electrical parameters of the line, the static stability of the line can be accurately solved.

Description

technical field [0001] The invention relates to a static stability analysis method of a power grid, in particular to a static stability analysis method of a power grid considering meteorological factors. Background technique [0002] In the analysis of power systems, the single-segment lumped parameter model is traditionally used for overhead transmission lines. This model assumes that the material properties and current density along the transmission line are uniform, and ignores the change of conductor temperature caused by the temporal and spatial changes of meteorological parameters along the line. The calculation of line parameters usually uses the corresponding resistance and reactance values ​​when the conductor temperature is 20 degrees. In practical applications, the meteorological parameters along the line have significant temporal and spatial variation characteristics, resulting in that the temperature of the conductor is usually constantly changing, and it is dif...

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/00
Inventor 邹文仲张高峰
Owner NR ELECTRIC CO LTD
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