Load flow calculation method based on active power distribution network

A technology for power flow calculation and distribution network, which is applied to AC networks, electrical components, and circuit devices of the same frequency with different sources. time, reducing computational difficulty, and reducing the effect of the iterative process

Active Publication Date: 2022-01-04
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JINHUA POWER SUPPLY CO +1
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  • Application Information

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Problems solved by technology

In order to meet the demand for power flow calculation of distribution networks with distributed power generation, most of the conventional power flow calculation methods are improved according to the calculation model of distributed power generation, but after improvement, it is still necessary to solve nonlinear equations through multiple iterations. To obtain the voltage distribution results, this me

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  • Load flow calculation method based on active power distribution network
  • Load flow calculation method based on active power distribution network
  • Load flow calculation method based on active power distribution network

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Embodiment

[0052] Power flow calculation method based on active distribution network, such as figure 1 shown, including the following steps:

[0053] S1, based on the network topology of the active distribution network, obtain topology information including nodes, loops and branches, and collect power data corresponding to the topology information;

[0054] S2, constructing a standard vector group, assigning values ​​to the standard vector group according to topology information and power data, obtaining a feature vector group corresponding to each circuit, and establishing a circuit-branch matrix based on the feature vector group;

[0055] S3, based on the node characteristic curve of the distributed power access distribution network, extract the power calculation model, obtain the power value corresponding to each node in the distributed power access according to the power calculation model, and determine all nodes according to the obtained power value power distribution;

[0056] S4...

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Abstract

The invention provides a load flow calculation method based on an active power distribution network. The method comprises the steps of: obtaining topological information including nodes, loops and branches based on a network topological structure of the active power distribution network, and collecting power data corresponding to the topological information; establishing a loop-branch matrix based on a feature vector group; and calculating voltage distribution according to the established loop-branch matrix and an obtained power value, and according to obtained power distribution and the voltage distribution, calculating a load flow calculation result. According to the method, an existing nonlinear load flow calculation equation is simplified into a linear algebraic equation, the load flow calculation difficulty is reduced, the iteration process is reduced, the operation time is shortened, and a calculation result can be quickly obtained when the load flow of a power distribution network which contains a plurality of distributed power supplies and is large in scale is calculated.

Description

technical field [0001] The present application relates to the field of power flow calculation of active distribution networks, in particular to a power flow calculation method based on active distribution networks. Background technique [0002] With the depletion of natural resources and the aggravation of environmental problems, the development and utilization of renewable energy has become the theme of the times, and the demand for distributed power to be connected to the distribution network is also increasing day by day. After the distributed power generation is connected to the distribution network, it will change the passive network characteristics of the traditional distribution network and make it an active network, which will have an important impact on the power flow trend, voltage distribution, dispatching operation and other aspects of the distribution network. [0003] The distribution network with distributed power will also change from the traditional natural ...

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Application Information

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IPC IPC(8): H02J3/06H02J3/38
CPCH02J3/06H02J3/381H02J2203/10H02J2203/20H02J2300/20
Inventor 崔建业贾立忠马坤隆虞驰李振华方玉群张波赵冠军马翔徐建平徐洁柳延洪
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JINHUA POWER SUPPLY CO
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