Power grid-elastic mechanics network topology mapping method

A technology of elasticity and network topology, applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve the problem of limited state prediction effect, get rid of the dependence on the accuracy of component parameters, simplify the force analysis, and improve the predictability. The effect of judgment

Active Publication Date: 2013-11-13
竺炜
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Problems solved by technology

However, the physical relationship between the state variables cannot be directly displayed, and it needs to be analyzed according to the power grid theory, so it has limited effect on state prediction

Method used

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  • Power grid-elastic mechanics network topology mapping method
  • Power grid-elastic mechanics network topology mapping method
  • Power grid-elastic mechanics network topology mapping method

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Experimental program
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Embodiment Construction

[0014] 1. Mapping ideas

[0015] The power grid is a two-dimensional planar wiring network connected by geographically located nodes. Due to the fixed geographical location, the state quantity changes in the nodes and branches in the power grid have no space to appear in the power grid topology, that is, they can only be represented by abstract numbers and cannot be reflected from the topology.

[0016] Branch state and node state are corresponding and change accordingly. In general, the angular characteristics of the branch are similar to the tension-elongation characteristics of the spring. Therefore, the grid can be mapped into an elastic mechanical network.

[0017] The complex topology makes the force directions of the branches disordered, the force analysis is difficult, and the intuition is lost. Therefore, if the power grid is mapped to an elastic mechanical network, two problems need to be solved: 1) the nodes and branches of the elastic network and the power grid ...

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Abstract

Traditional power grid topology can only reflect connections of geography position nodes on two-dimensional plane and can not dynamically show relations between quantities of state. By using the power grid-elastic mechanics network topology mapping method of the invention, the power grid can be mapped to a three-dimensional expansion arrangement and longitudinal bearing elasticity network, which maintains an original topology connection state of the power grid and shows a physical property of power angle. An actual measurement quantity of state of wide-area measurement system (WAMS) is put into the elasticity network model mapped by the method of the invention. Power grid power angle state changes can be visually showed through an elasticity network deformation so as to get rid of dependence on element parameter accuracy. Anticipation ability of the power grid state changes can be raised. The invention possesses practical significance for realizing power grid visualization intelligence analysis and control.

Description

technical field [0001] Power system (grid) analysis, operation and control. Background technique [0002] my country's smart grid research attaches great importance to the backbone network, which is in line with the top-level design and benefit principles. At present, the key bottleneck of "intelligence" lies in the poor "perception" of the power grid, that is, the poor ability to directly respond to changes in complex power grid topology and state quantities. System state analysis is generally based on complex calculations of time sections based on models, parameters, and initial values; system operation control is generally based on preset operation modes or offline analysis of faults, and corresponding control measures are configured or plans are provided. If the fault situation is not in the preset library during operation, it will be difficult to make timely and reasonable responses to complex power grids. Therefore, one of the core functions of the smart grid is the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
Inventor 竺炜
Owner 竺炜
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