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Power system topology layered recognition method based on island search technology

A power system and identification method technology, applied in the field of power system simulation analysis, can solve problems such as slow calculation speed, difficult to clearly layout the graphical interface, and excessive calculation scale, and achieve fast calculation speed, clear layout, and small calculation scale.

Active Publication Date: 2018-01-09
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the domestic actual power grid simulation data is generally electromechanical transient calculation data, such as PSASP, BPA, PSDB, etc. In the existing data, in order to reflect the special wiring forms such as 3 / 2 wiring, double busbar wiring, and high-resistance lines in the substation, there are a number of A large number of short-terminals has caused a sharp increase in the scale of power grid nodes. At present, the number of main network nodes in a medium-sized provincial power grid can reach 1000-2000 nodes; if the model is directly converted, it will make it difficult to clearly layout the converted graphical interface Distinguish between inter-site connections and intra-site connections, and the calculation scale is too large and the calculation speed is slow

Method used

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  • Power system topology layered recognition method based on island search technology
  • Power system topology layered recognition method based on island search technology
  • Power system topology layered recognition method based on island search technology

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Experimental program
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Embodiment 1

[0050] A hierarchical recognition method for power system topology based on island search technology, including the following steps,

[0051] A. Data is read in, based on deconstruction, splitting, and preprocessing to form a full-topology branch table with labels;

[0052] B. According to the full topology branch table, an island branch sub-table and a node-site correspondence table are sequentially formed;

[0053] C. According to the node-site correspondence table, a topology description between the plant and station sites is formed;

[0054] D. Identify and describe the topology in the station.

Embodiment 2

[0056] This embodiment discloses a specific implementation manner based on the principles of the foregoing embodiments.

[0057] A1. Read in the node data table, branch data table, transformer data table, generator data table, and load data table in the original power flow calculation data, and filter out all effectively connected components in the research area, and form the original data according to the specified format The structure, the data table and main contents in the structure are as follows:

[0058] (a) Node data table NodeTable

[0059] Contains all node information in the selected area, the main fields are: node name, area number, reference voltage level, original node number;

[0060] (b) Branch data table brnTable

[0061] Contains all series and parallel branch information in the selected area except the transformer branch, including AC transmission line, series reactance, series capacitor, parallel reactance, parallel capacitor, parallel filter and other co...

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Abstract

The invention discloses a power system topology layered recognition method based on the island search technology. The power system topology layered recognition method comprises following steps: A, reading in data, forming a full topology branch table with an identification based on deconstruction splitting and preprocessing; B, sequentially forming an island branch subtable and a node-site corresponding table according to the full topology branch table; C, forming topology descriptions of station sites according the node-site corresponding table; and D, carrying out instation topology recognition and description. The power system topology layered recognition method is small in computing scale and fast in computing speed, the converted figure interface is clear in layout, and the interstation connection relation and the instation connection relation can be distinguished.

Description

technical field [0001] The invention relates to the technical field of power system simulation analysis, in particular to a power system topology layered recognition method based on an island search technology. Background technique [0002] With the massive access of new energy and power electronic equipment, electromagnetic transient simulation has gradually become a necessary means for modern power system analysis, and the rapid development of computer performance has made the simulation calculation of large-scale power grid full electromagnetic transient a new development. trend. However, due to the large number of nodes in the actual grid, the large amount of component parameter data, the large workload of artificial electromagnetic transient modeling, error-prone, and complicated data maintenance, etc., have become important constraints for the promotion of this technology. Therefore, based on the existing calculation data of the actual grid The technology of automatic...

Claims

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Application Information

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IPC IPC(8): H02J3/00
Inventor 唐伦史华勃魏巍滕予非陈刚丁理杰张华周波
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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