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Auxiliary decision-making method for transient stability preventive control based on safety domain

A technology of transient stability and preventive control, applied in the direction of reducing/preventing power oscillation, instrumentation, design optimization/simulation, etc., can solve problems affecting the engineering application of practical dynamic safety domain methods

Active Publication Date: 2019-08-09
NANJING NARI GROUP CORP +4
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the past, a large number of offline analysis and calculations were required, which to a certain extent affected the engineering application of the practical dynamic security domain method

Method used

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  • Auxiliary decision-making method for transient stability preventive control based on safety domain
  • Auxiliary decision-making method for transient stability preventive control based on safety domain
  • Auxiliary decision-making method for transient stability preventive control based on safety domain

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Embodiment 1

[0119] An embodiment of the present invention, its steps are as figure 1 shown.

[0120] refer to figure 1 , a kind of transient stability preventive control auxiliary decision-making method based on the practical dynamic safety domain proposed by the present invention comprises the following steps:

[0121] figure 1 Step 1 is: obtaining input information, the input information includes practical dynamic security domain information, power grid operation mode information, power grid operation constraint information, and security and stability control cost information.

[0122] The practical dynamic safety domain information should be associated with the power grid topology and expected faults, reflect transient stability constraints, and be expressed by a hyperplane equation set described by node injection power, and the jth hyperplane equation corresponding to the kth expected fault is as follows: (1) as shown:

[0123]

[0124] In the formula (1), N is the number of no...

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Abstract

The invention belongs to the technical field of transient stability prevention and control aided decision making of a power grid and discloses a transient stability prevention and control aided decision making method based on a security domain. The method comprises the steps that practical dynamic security domain information, power grid operation mode information and control cost information are obtained firstly, then transient stability assessment based on the practical dynamic security domain is performed, control strategy calculation based on transient stability improvement is performed, strategy calculation of node injection power reduction control and node injection power improvement control is performed through alternative iteration, and finally additional control strategy calculation of power grid power balance is performed. Rapid analytical calculation of transient stability control aided decision making is achieved by fully utilizing results of offline and online security and stability assessment, limit calculation and control aided decision making analytical calculation, the accuracy and efficiency of transient stability prevention and control aided decision making are constantly improved, and the method has the important significance on improvement of power grid security and stability operation level and improvement of security and stability control benefits.

Description

technical field [0001] The invention belongs to the technical field of auxiliary decision-making for prevention and control of transient stability of power grids. Specifically, the invention relates to an auxiliary decision-making method for prevention and control of transient stability based on a security domain. Background technique [0002] Preventive control is one of the important technical means to ensure the safe and stable operation of the power system in view of the safety and stability problems existing under the expected fault, and it belongs to the first line of defense of safety and stability control. Therefore, the theoretical research and engineering application technology related to preventive control have been receiving much attention. [0003] The security region (SR) method is a new method developed on the basis of the point-by-point method. It considers the problem from the perspective of the region and describes the region that can operate safely and sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J3/24G06F17/50
CPCG06F30/20H02J3/00H02J3/24H02J2203/20Y02E60/00
Inventor 李碧君李勇崔晓丹徐遐龄李威徐友平王春明石渠
Owner NANJING NARI GROUP CORP
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