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Fast implementation method for diving coherent generator groups based on hierarchical topology structure of power grids

A layered topology and implementation method technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems of large workload, failure to take into account the connection to 35kv or 10kv bus generator sets, large-scale power grid, etc. Achieve the effect of improving work efficiency

Pending Publication Date: 2018-02-02
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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Problems solved by technology

This method of manually dividing coherent units brings about two problems: First, due to the large scale of the power grid, it takes a lot of work to clarify the topological relationship between the generator and the corresponding bus in detail on the geographic wiring diagram
On the other hand due to geographic wiring Figure 1 Generally, only the units connected to the voltage level above 110kv are drawn, and the generating units connected to the 35kv or 10kv bus are not taken into account when the coherent units are aggregated

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  • Fast implementation method for diving coherent generator groups based on hierarchical topology structure of power grids

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Embodiment Construction

[0012] Based on the characteristics of the hierarchical topological structure of the power grid, the present invention regards the entire power grid network topology as a multi-layer topological graph, and each layer is combined with points and lines. Then, according to the hierarchy of the busbar, line and transformer nodes, the wiring analysis of the entire topological island is carried out to find out all the generating units belonging to the topological island, and finally realize the fast realization scheme of coherent unit division. This scheme is divided into two steps: Hierarchical search belongs to All nodes within the range of the same 500kV site form a topological island; traverse all generating units in the topological island to form a group of coherent units.

[0013] (1) Form an initial topological island

[0014] In the power grid model, the same 500kV site may contain multiple busbars, and the busbars are connected through circuit breakers. As the root node of...

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Abstract

The invention provides a fast implementation method for diving coherent generator groups based on a hierarchical topology structure of power grids. The method utilizes the hierarchical relationship ofdifferent voltage levels of a grid, takes each 500 kV station as root node, adopts breadth-first search strategy, and delaminates global network topology, which can quickly divide all coherent generator groups of the power grid without any omissions. At the same time, there is no need to draw geography wiring diagram manually in the process of division, which greatly improves work efficiency. Inpractical applications, the method can meet the requirements of power grid coherent generator groups division under various scales and connection modes.

Description

technical field [0001] The invention relates to the technical field of ultra-high voltage power transmission, in particular to a method for quickly realizing the division of coherent units based on the layered topology of the power grid. Background technique [0002] With the rapid development of the power system and the emergence of large-scale grid interconnection, the scale and complexity of the grid have greatly increased. In the electromagnetic transient simulation calculation of a grid such as the China Southern Power Grid, due to the complexity of the electromagnetic transient element model and the small simulation step size , the amount of simulation calculation is very large. Through the effective dynamic equivalent of the original large-scale system, the research of the equivalent system replaces the research of the original system, and the simulation efficiency can be greatly improved under the condition of ensuring the necessary accuracy. [0003] In the process...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06F17/50
CPCH02J3/00G06F30/367H02J2203/20Y02E60/00
Inventor 李清彭光强国建宝张楠何竞松王立平武霁阳
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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