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A method and device for adjusting the operation mode of a power grid

A technology of power grid operation and adjustment method, which is applied in the direction of AC network voltage adjustment, reactive power compensation, etc., and can solve problems such as damage to equipment

Active Publication Date: 2020-05-26
海南电网有限责任公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a method and device for adjusting the operation mode of the power grid, which can effectively alleviate the problem of damage to equipment caused by voltage sags caused by short-circuit faults in the power grid in the prior art

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  • A method and device for adjusting the operation mode of a power grid
  • A method and device for adjusting the operation mode of a power grid
  • A method and device for adjusting the operation mode of a power grid

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] An embodiment of the present invention provides a method for adjusting the power grid operation mode, such as figure 1 As shown, the method includes:

[0049] 101. Determine the voltage sensitivity of each bus in the power grid.

[0050] Preferably, the above-mentioned step 101 specifically includes the following content:

[0051] 101a. Substitute the weight factor of the important sensitive load, the reactive compensation power input into the busbar ...

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Abstract

The embodiment of the invention provides a method and a device for adjusting the operation mode of a power grid and relates to the technical field of power systems, wherein the problem that equipmentis damaged due to the voltage sag as a result of the short circuit fault of the power grid in the prior art is effectively solved. According to the scheme, the voltage sensitivity of each bus in the power grid is determined; according to the voltage sensitivity, all buses in the power system are ranked from large to small, and then the important degree of each bus is obtained; according to the types of one part of the buses ranked first, corresponding control operations are carried out on the power grid, so that the operation mode of the power grid is adjusted. The control operations are composed of additionally arranging a low-voltage capacitor, additionally arranging a power generation set or switching on a standby reactive power supply. The method and the device are used for adjusting the operation mode of the power grid.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a method and device for adjusting the operation mode of a power grid. Background technique [0002] With the rapid development of high-tech industries, voltage-sensitive loads have been widely used in various power consumption departments in modern industrial production. Sensitive loads mainly include programmable logic controllers, speed control drives, AC contactors, personal computers, etc. Although the voltage sag did not cause a complete power interruption between the system and power users, when the magnitude and duration of the voltage sag exceeded the tolerance of the key control equipment of the sensitive load, it would cause the programmable logic controller to fail, contact Device tripping, computer storage data loss, resulting in the scrapping of processed products on the production line, or motor shutdown, especially for large-scale enterprises with a high deg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/12H02J3/16
CPCY02E40/30
Inventor 魏国清余加喜徐悦洋谢磊李献胡剑琛陈雁张东辉
Owner 海南电网有限责任公司
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