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Electric power system fully distributed partitioning power flow calculation method

A technology for power system and power flow calculation, which is applied in the direction of AC networks, circuit devices, AC network circuits, etc. with the same frequency from different sources.

Inactive Publication Date: 2017-10-24
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +1
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  • Application Information

AI Technical Summary

Problems solved by technology

Up to now, there is still a lack of a fully distributed method that can realize the partition power flow calculation of the interconnected power system

Method used

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  • Electric power system fully distributed partitioning power flow calculation method
  • Electric power system fully distributed partitioning power flow calculation method
  • Electric power system fully distributed partitioning power flow calculation method

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Embodiment Construction

[0054] A fully distributed partition power flow calculation method of a power system proposed by the present invention will be further described below in conjunction with the accompanying drawings.

[0055] A fully distributed partition power flow calculation method of the power system proposed by the present invention, the overall flow is as follows figure 1 As shown, the method includes the following steps:

[0056] 1) Establish power system partition power flow equation:

[0057] The voltage of node i in the power system is expressed in Cartesian coordinates as:

[0058] V i = e i +jf i

[0059] where e i Represents the real part of the voltage at node i in the power system, f i Represents the imaginary part of the voltage at node i in the power system. Assume that there are n nodes in all partitions of the power system, excluding balance nodes, among which r nodes are PV nodes, and n-r nodes are PQ nodes. Using the power flow equation in the Cartesian coordinate s...

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Abstract

The invention relates to an electric power system fully distributed partitioning power flow calculation method, and belongs to the technical field of electric power system operation and control. The method comprises the steps that an electric power system partitioning power flow equation is established; and an electric power system partitioning power flow calculation node voltage state variable is iteratively solved through an outer ring Newton-Raphson method; and an electric power system partitioning power flow calculation correction value is solved through inner ring fully distributed iteration in in every iteration of the outer ring. According to the method, outer ring Newton-Raphson iterative calculation and inner ring fully distributed iterative calculation are introduced in partitioning power flow calculation of the interconnected electric power system, and the partitioning power flow calculation problem is converted into the problem of two layers of iteration so that accurate and efficient solution of the partitioning power flow calculation problem can be realized, operation of the electric power system is ensured to be more stable and control is safer and more reliable.

Description

technical field [0001] The invention belongs to the technical field of power system operation and control, and specifically relates to a fully distributed partition power flow calculation method of the power system, which introduces the Newton-Raphson iterative calculation of the outer loop and the Newton-Raphson iteration calculation of the inner loop in the partition power flow calculation of the interconnected power system. Fully distributed iterative calculation, transforming the partition power flow calculation problem into a two-layer iterative problem solution. Background technique [0002] The regional power flow calculation is an effective method to solve the integrated power flow problem of multi-regional interconnected grids. The regional power flow calculation of the interconnected grid can maintain the independence of the data resources of each regional power grid, and realize the accurate calculation of the power flow of each regional power grid with as few reg...

Claims

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Application Information

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IPC IPC(8): H02J3/06
CPCH02J3/06H02J2203/20
Inventor 吴文传马建伟张伯明孙宏斌田庄孙芊柴旭峥樊越甫赵健郭庆来王彬
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST