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Power transmission network planning method and system based on line power flow distribution

A power flow distribution and transmission network technology, applied in the direction of AC networks with the same frequency from different sources, can solve the problems of increasing the probability of blackout accidents, uneven power flow distribution, intermittent power supply, etc.

Active Publication Date: 2020-01-17
YANSHAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

When the system is faced with disturbances or failures, problems such as intermittent power supply and equipment damage will occur. These are related to the distribution of line power flow. The highly uneven distribution of power flow will increase the probability of power outages.

Method used

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  • Power transmission network planning method and system based on line power flow distribution
  • Power transmission network planning method and system based on line power flow distribution
  • Power transmission network planning method and system based on line power flow distribution

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Embodiment Construction

[0076] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0077] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0078] figure 1 It is a flow chart of a transmission network planning method based on line power flow distribution according to an embodiment of the present invention.

[0079] see figure 1 , the transmission ne...

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Abstract

The invention discloses a power transmission network planning method and system based on line power flow distribution. The method comprises the steps of determining a power grid structure of a to-be-planned power transmission network; calculating the line power flow entropy of the power grid structure, wherein the line power flow entropy comprises a line load rate power flow entropy, a line activeloss rate power flow entropy and a line power transmission efficiency power flow entropy; calculating a balance degree factor of the to-be-planned power transmission network by adopting a mean squareerror method according to the line power flow entropy; establishing a multi-objective planning model according to the balance degree factor and the cost of the to-be-planned power transmission network, wherein the multi-objective planning model comprises an average line power flow balance objective function and a lowest cost objective function; solving the multi-target planning model by adoptinga multi-target bacterium drug-taxis algorithm to obtain an optimal solution, wherein the optimal solution is an optimal line planning result of the to-be-planned power transmission network. By adopting the method or the system, the power failure probability can be reduced, and the reliable and stable operation of a power grid is ensured.

Description

technical field [0001] The invention relates to the technical field of transmission network planning, in particular to a transmission network planning method and system based on line flow distribution. Background technique [0002] In recent years, the research on source network load and plant network is relatively mature, but the targeted research on pure power grid is still relatively weak. The power grid plays an important role in the operation of the power system. It not only purchases electricity from the grid company, but also supplies power to users. To maintain safe, reliable and stable operation, it is necessary to conduct planning and research on the power grid. Transmission network planning and distribution network planning are two major directions that make up power grid planning. The transmission network is the main network of the large power grid. It connects power sources and loads in the power grid. The planning results directly affect the normal operation of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/06
CPCH02J3/06Y04S10/50
Inventor 钟嘉庆高帆帆陈博张晓辉
Owner YANSHAN UNIV
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