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Processing method for actual power grid power flow distribution problem

A technology of power flow distribution and processing methods, applied in the direction of electrical digital data processing, special data processing applications, electrical components, etc., can solve problems such as the influence of convergence rate, achieve reliability assurance, optimize iterative calculation methods, and reduce storage requirements Effect

Inactive Publication Date: 2015-08-12
CHONGQING UNIV
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Problems solved by technology

However, the convergence rate is affected in ill-conditioned situations, and other methods have been proposed, but they all have various problems

Method used

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  • Processing method for actual power grid power flow distribution problem
  • Processing method for actual power grid power flow distribution problem
  • Processing method for actual power grid power flow distribution problem

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] A method for dealing with the power flow distribution problem applied to the actual power grid, its process is as follows figure 1 As shown, the method includes the following steps:

[0020] 1) Establish corresponding mathematical models for nodes with known active power and voltage (PV nodes) and nodes with known active power and reactive power (PQ nodes): according to the different characteristics of PV nodes and PQ nodes, respectively establish corresponding The mathematical model of the current unbalance is used to represent the real part and the imaginary part of the PQ node injection current unbalance are respectively Δ I rk = V rk Δ P k ...

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Abstract

The invention discloses a processing method for an actual power grid power flow distribution problem. The method comprises steps of 1) establishing corresponding mathematic models for nodes having known active power and voltages and nodes having known active power and reactive power; 2) establishing a mathematic calculation model used for solving power grid power flow distribution based on an injection current method; and 3) improving the algorithm through the introduction of optimized operators during an iteration process. According to the invention, the simplified power flow calculation model is established, an iterative calculation method is optimized, a calculation process is clear, storage demands in the iteration process are reduced, the processing method guarantees that the algorithm has good convergence effects under conditions that a power grid is overloaded, heavily loaded or problematic, the dependability and reliability of power flow calculation results can be guaranteed, and reliable information can be provided for power grid planning and scheduling.

Description

technical field [0001] The invention relates to the fields of power system steady-state analysis and power grid operation monitoring, in particular to a processing method for power flow distribution problems applied to actual power grids. Background technique [0002] Power flow calculation studies are necessary for planning, operation, economic dispatch, and voltage stability. The goal of power flow calculation is to solve the steady-state operating conditions of the power system under different operating modes and different connection modes. So far there have been many different power flow calculation methods, and continue to develop as the needs change. [0003] Conventional power flow calculation methods consist of power equations in polar or rectangular coordinates. The new pull method improves the iterative characteristics of the Gauss-Samuel method and is widely used in industrial applications. However, the main disadvantage of the Niu La method is that the Jacobia...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06F19/00
CPCG16Z99/00H02J3/00H02J2203/20
Inventor 王磊陈晨沈涛卢颖陈柳
Owner CHONGQING UNIV
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