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A Fast Method for Analyzing the Static Security of Power Network

A static security and rapid analysis technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as the inability to guarantee that no security problems will occur, and achieve the effect of strong business flexibility and scalability, and improved speed.

Active Publication Date: 2019-07-23
CHINA SOUTHERN POWER GRID COMPANY
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: there is no guarantee that serious security problems will not occur in the neglected situation; moreover, with the continuous change of the network, the collection of important lines is also constantly changing, and it is impossible to guarantee that the most serious one can always be selected by using existing experience. situation analysis

Method used

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  • A Fast Method for Analyzing the Static Security of Power Network
  • A Fast Method for Analyzing the Static Security of Power Network
  • A Fast Method for Analyzing the Static Security of Power Network

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Embodiment Construction

[0028] The method for quickly analyzing the static security of the power grid of the present invention performs a fast static security analysis of the power grid, and the specific implementation steps are as follows:

[0029] (1) Establish an initial network topology model

[0030] Using the network model in the existing system (such as EMS), through topology analysis, the network model for calculating the DC power flow is obtained, and its core is the B matrix and the P vector.

[0031] (2) Create a list of computing tasks

[0032] To establish a task list, generally speaking, for the N-1 evaluation method, it includes N tasks, and each task is a DC power flow calculation. For N-M, the disconnection combination can be defined by the user according to the needs.

[0033] Let N E is the total number of equipment (including lines and transformers, and transformers include double-winding and three-winding transformers), and the number of lines is N L , N T2 , N T3 , then N ...

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Abstract

The invention relates to a method for analyzing static security of a grid rapidly. The method comprises: (1), establishing an initial network topological model; (2), establishing a computing task list: (3), establishing an expected fault correction model; (4), establishing a distributed computing network and distributing a task; and (5), combining and processing a computing result. According to the invention, a static security analysis of a power grid is carried out by means of parallel computing and results are analyzed and sorted. N-M computing not limiting to N-1 can be carried out rapidly by a self-defined preconceived accident set. Clustering calculation is carried out by using a model correction and load flow calculation corresponding to each preconceived accident as an independent calculation unit, so that the speed of static security analysis problem calculation is increased; and for a result set, two kinds of checking schemes of mapping from accident equipment to an out-of-limit equipment set and mapping from out-of-limit equipment to accident equipment are realized. Besides, a single preconceived accident, a transformer preconceived accident, and a combined preconceived accident can be dealt with.

Description

technical field [0001] The invention is a method for quickly analyzing the static security of the power grid, which belongs to the innovative technology of the method for quickly analyzing the static security of the power grid. Background technique [0002] The scale of today's power system is expanding, the integration of regional power systems is increasing, the operation of the system is becoming more and more complex, and new situations and new problems are constantly emerging, which are mainly reflected in the following aspects: 1) For economic considerations, the current power The system generally operates near the stability limit, which requires the system operators to respond promptly and quickly to the problems; Pursue the economy of operation. Especially after the power system realizes commercial operation, there are more and more large-scale power transmissions, which makes the scope of operation control larger and larger, the types of system members become more ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00G06F17/50G06Q50/06
CPCG06Q50/06G06F30/367H02J3/00H02J2203/20Y04S10/50
Inventor 梁寿愚方文崇赵化时赵旋宇唐弈轩何超林
Owner CHINA SOUTHERN POWER GRID COMPANY