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Power distribution network topology serial number generating method based on searching in power distribution network load flow calculation

A technology for distribution network topology and power flow calculation, which is applied in electrical components, circuit devices, AC network circuits, etc., and can solve problems such as low program execution efficiency and complex search methods.

Active Publication Date: 2014-05-14
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0004] In view of the existing numbering method of power distribution system mentioned in the background technology, when a new node or branch needs to be renumbered when a new node or branch is added to the distribution network, the search method is complicated and the program execution efficiency is low. A search-based generation method of distribution network topology number in power flow calculation of distribution network is proposed

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  • Power distribution network topology serial number generating method based on searching in power distribution network load flow calculation
  • Power distribution network topology serial number generating method based on searching in power distribution network load flow calculation
  • Power distribution network topology serial number generating method based on searching in power distribution network load flow calculation

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Embodiment Construction

[0041] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0042] figure 1 It is a flow chart of the number generation method provided by the present invention. figure 1 The method described in specifically comprises the following steps:

[0043] Step 1: Collect the voltage and power uploaded by the feeder terminal unit FTU installed at the switch on the pole; and obtain the load position and load size of the equivalent load model according to the voltage and power;

[0044] Step 2: Take the equivalent load node and the power supply node as the nodes; take the feeder terminal unit FTU and the equivalent load node, and the part between the feeder terminal unit FTU and the T node as the branch, and obtain the simplified model of the distribution network;

[0045] Step 3: On t...

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Abstract

The invention belongs to the technical field of electric power system analysis, and discloses a power distribution network topology serial number generating method based on searching in power distribution network load flow calculation. According to the method, equivalent load nodes, T-shaped nodes and power source nodes in a distribution network simplified model are expressed through nodes in a topological graph; a section switch, an interconnection switch and a circuit breaker are expressed through branch circuits in the topological graph; the nodes and the branch circuits respectively correspond to a real serial number, and the real serial numbers cannot repeat any definition. The searching method is used for generating virtual serial numbers, after the nodes / branch circuits are newly added in the distribution network, the serial numbers only need to be distributed for the newly-added nodes / branch circuits, there is no need for original serial numbers to be changed, the virtual serial numbers are generated automatically by searching, the virtual serial numbers can achieve the load flow calculation function, the phenomenon that a large number of data in a power distribution automation database are updated under the condition that equipment is newly added on the distribution network and the distribution network is reconstructed is avoided, and therefore the method is of great positive significance to promoting the intelligent level of load flow calculation of the power distribution network.

Description

technical field [0001] The invention belongs to the technical field of power system analysis, and in particular relates to a method for generating distribution network topology numbers based on search in distribution network power flow calculation. Background technique [0002] In recent years, with the gradual acceleration of the construction of smart grid, the development and research of advanced distribution automation system has been paid more and more attention. Some functions in the distribution automation system, such as network optimization operation, fault location, etc., are based on the distribution network model. The distribution system equations and variables are associated with the nodes and branches in the distribution network model. In order to accurately describe the relationship between the nodes and branches of the distribution system, it is necessary to number the distribution system and the branches. Many numbering methods have been proposed for the tra...

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Application Information

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IPC IPC(8): H02J3/00
Inventor 戴志辉崇志强
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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