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A Generalized Fast Method for Power Flow Decomposition

A power flow method, a generalized technology, applied to AC network circuits, AC networks with the same frequency from different sources, instruments, etc., can solve the problems of no longer convergence, rapid decomposition of power flow calculation efficiency, etc., and achieve good convergence. , the effect of high computational efficiency

Active Publication Date: 2021-02-05
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the network parameters and operating conditions violate the decomposition assumptions (for example, the R / X ratio of the system is too large), the calculation efficiency of the fast decomposition power flow will decrease, or even no longer converge

Method used

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  • A Generalized Fast Method for Power Flow Decomposition
  • A Generalized Fast Method for Power Flow Decomposition
  • A Generalized Fast Method for Power Flow Decomposition

Examples

Experimental program
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Embodiment Construction

[0056] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0057] Generalized fast decoupled load flow method (Generalized Fast Decoupled Load Flow, GFDLF) of the present invention comprises the following steps:

[0058] Step A: Provide a Generalized Fast Decoupled Load Flow (GFDLF) model.

[0059] Specifically, the model of GFDLF proposed by the present invention is as follows

[0060] First define ΔP i and ΔQ t

[0061]

[0062]

[0063] where V j is the node voltage of the jth node, G ij is the mutual conductance between the i-th node and the j-th node, θ ij is the angular difference between the i-th node and the j-th node, Bij is the mutual susceptance between node i and node j, and and the given value of the active power and reactive power of the i-th node.

[0064] Then define B', G', B" and G"

[0065] According to the Newton-Raphson power flow correction equation

[0066]

[0067] Among ...

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Abstract

The present invention proposes a method for generalized rapid decomposition of power flow, which includes the following steps: providing a basic model of generalized rapid decomposition of power flow; and using Newton-Raphson algorithm to solve the generalized rapid decomposition of power flow. The example analysis shows that the invention has strong convergence and high calculation efficiency, has good engineering application prospects, can be applied to circuits with high R / X ratio, and is very suitable for practical engineering applications.

Description

technical field [0001] The invention belongs to the technical field of power system scheduling automation, and in particular relates to a generalized fast decoupled load flow method (Generalized Fast Decoupled Load Flow, GFDLF). Background technique [0002] As the most basic and important calculation in the power system, the power flow calculation plays an important role in the system planning, operation planning, and operation / control of the power system. The initial power flow calculation method implemented on the computer is the Gauss-Seidel-type based on the admittance matrix, and then the Newton-Raphson-type is proposed, which has better Convergence and higher computational efficiency. The application of sparse technology has greatly improved the calculation efficiency of the power flow equation. In order to further improve the efficiency of the Newton-Raphson iterative method, Fast Decoupled Load Flow (FDLF) came out. For the transmission network (especially the hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/06G06Q50/06
CPCG16Z99/00H02J3/06H02J2203/20
Inventor 陈艳波陈锐智王若兰
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)