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Optimized searching method for power grid topological analysis

A technology for optimizing search and power grid topology, applied in the field of optimization search of power grid topology analysis, can solve the problems of increasing the calculation amount and time consumption of topology analysis, avoid repeated or inaccurate search paths, improve efficiency, and improve search efficiency. Effect

Inactive Publication Date: 2017-09-15
STATE GRID JIANGSU ELECTRIC POWER CO LTD TAIZHOU POWER SUPPLY BRANCH +1
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Problems solved by technology

With the development of computer software and the progress of various detection techniques, the power grid usually uses computer programs to automatically analyze and calculate the network topology model of the power grid. Using the traditional depth-first search algorithm to search for each bus, it is necessary to judge whether each branch is a branch or whether it is connected to the system, and then search back to the bifurcation node. Since the search process may involve a large number of repeated searches, This judgment and backtracking process will greatly increase the amount of calculation and time consumption of topology analysis

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  • Optimized searching method for power grid topological analysis
  • Optimized searching method for power grid topological analysis
  • Optimized searching method for power grid topological analysis

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[0020] The invention is described in detail below.

[0021] An optimization search method for network topology analysis of the present invention,

[0022] Such as figure 1 As shown in , in the process of analyzing the physical topology and geometric topology of the power grid, the power grid system can be equivalent to a three-node network, where node m and node p correspond to two associated nodes in the three-node network bus, node q corresponds to another bus in the node network.

[0023] Such as figure 2 shown in Z qp ,Z qm ,Z mp ,Z mm Represents the mutual impedance or self-impedance in the system node impedance (positive sequence) corresponding to nodes m, p, and q, and the equivalent reactance Z between nodes p and q qp Physically quantitatively describes the magnitude of the electrical coupling between nodes p and q, and the coupling path does not pass through node m. When the equivalent reactance between nodes p and q in the equivalent network approaches infi...

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Abstract

The invention relates to the technical field of power grid network topological analysis, and relates to an optimized searching method for power grid topological analysis. The optimized searching method for power grid topological analysis can quickly perform path determination, maintain accuracy of the searching direction and avoid repetition and inaccuracy of path searching during the searching process by means of the line impedance element which can be quickly determined and by means of the simple determination relational expression, can improve the searching speed, can reduce the data bulk of searching, and can improve the searching efficiency so as to improve the efficiency for network topological analysis.

Description

technical field [0001] The invention relates to the field of power grid network topology analysis, in particular to an optimization search method for power grid topology analysis. Background technique [0002] When planning and designing the power grid operation, it is often necessary to analyze and optimize various lines of the power grid, which involves the identification and search of various busbars. In the power grid, the bus with branches or transformers is defined as the terminal bus, and the terminal bus at the end of the system is defined as the terminal bus. When calculating the comprehensive impedance of the terminal busbar, it is necessary to determine the corresponding broken busbar on the system side. In a small-scale power grid with a simple structure, the designer can quickly determine each terminal busbar and its corresponding round-off busbar based on visual observation or simplified drawing. With the development of power grid automation technology, the s...

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06G06F17/50
CPCG06Q10/04G06Q50/06G06F30/18Y02E40/70Y04S10/50
Inventor 祁晖杨乐吴倩
Owner STATE GRID JIANGSU ELECTRIC POWER CO LTD TAIZHOU POWER SUPPLY BRANCH
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