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Method and system for dynamically optimizing and adjusting control object of each turn of low-frequency load shedding on line

A technology of low-frequency load shedding and round control, which is applied in the direction of AC network voltage adjustment, information technology support system, power network operating system integration, etc. Technical support, the effect of solving the insufficient total amount of low-frequency load shedding control or the hidden danger of over-control, and improving the level of adaptability and accuracy

Pending Publication Date: 2021-11-23
NARI TECH CO LTD
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Problems solved by technology

[0006] The present invention provides a method and system for online dynamic optimization and adjustment of each round of low-frequency load shedding control objects, which solves the problem of the fixed mode of low-frequency load shedding control objects, and the total amount of low-frequency load shedding control when a large power shortage event occurs in the power grid Problems with under- or over-control hazards

Method used

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  • Method and system for dynamically optimizing and adjusting control object of each turn of low-frequency load shedding on line
  • Method and system for dynamically optimizing and adjusting control object of each turn of low-frequency load shedding on line
  • Method and system for dynamically optimizing and adjusting control object of each turn of low-frequency load shedding on line

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0050] Such as figure 1 As shown, the online dynamic optimization method for adjusting the control objects of each round of low-frequency load shedding includes the following steps:

[0051] Step 1, counting the actual controllable total load of each round of low-frequency load shedding;

[0052] Step 2, calculate the upper limit and lower limit of the total amount of load to be controlled in each round, and evaluate the adaptability of the actual total controllable load in each round to obtain the unsuitable rounds;

[0053] Step 3, calculate the amount of controllable load that needs to be adjusted for the unsuitable rounds; among them, the unsuitable rounds include the rounds with insuffici...

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Abstract

The invention discloses a method and a system for dynamically optimizing and adjusting control objects of each turn of low-frequency load shedding on line, and the method comprises the steps: carrying out the adaptability evaluation of the actual controllable load total amount of each turn, formulating a strategy for adjusting the control objects of each turn based on the condition that the actual controllable load total amount is not suitable for the controllable load amount needing to be adjusted of the turn, and achieving the optimization and adjustment of the control object; therefore, the adaptivity and accuracy level of the low-frequency load shedding control strategy are improved, the hidden danger that the total low-frequency load shedding control amount is insufficient or over-control exists in a fixed mode based on the low-frequency load shedding control object is solved, and better technical support is provided for a third defense line of power grid safety to fully play a proper role.

Description

technical field [0001] The invention relates to a method and system for dynamically optimizing and adjusting the control objects of each round of low-frequency load shedding on-line, and belongs to the technical field of power systems. Background technique [0002] During operation, the power system often has to bear the impact of disturbances such as sudden loss of components and short-circuit faults. In order to ensure the safe and stable operation of the power system, the ability of the power system to withstand disturbances is divided into three levels of safety and stability standards: the first level standard is to maintain stable operation and normal power supply of the power grid; the second level standard is to maintain stable operation, but allow the loss of part of the load ; The third standard is that when the system cannot maintain stable operation, it must try to prevent the system from collapsing and reduce the load loss. Corresponding to the three-level safe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/14H02J3/24
CPCH02J3/144H02J3/24H02J2203/20Y02B70/3225Y04S20/222
Inventor 李碧君郑亮赖业宁薛峰刘天翼颜云松李明应李祝昆崔强
Owner NARI TECH CO LTD
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