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Method for implementing parallel power flow calculation based on multi-core computer in electric grid

A multi-core computer and power flow calculation technology, which is applied in multi-programming devices, resource allocation, etc., can solve problems such as poor convergence of algorithms, and achieve the effect of low cost and fast operation speed

Inactive Publication Date: 2008-04-30
NANJING UNIV
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Problems solved by technology

[0003] The early power flow calculation method is a simple iterative method based on the admittance matrix. This method has a simple principle and less memory requirements, but the algorithm convergence is extremely poor.

Method used

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  • Method for implementing parallel power flow calculation based on multi-core computer in electric grid
  • Method for implementing parallel power flow calculation based on multi-core computer in electric grid
  • Method for implementing parallel power flow calculation based on multi-core computer in electric grid

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Embodiment Construction

[0016] The power grid is a new system formed by integrating the existing power system using grid technology. Figure 1 shows the composition structure of a power grid. In a broad sense, it includes all the hardware and software resources of the original power system, presenting a "virtual large power grid" to people. In a narrow sense, it refers to the computer systems of multiple power grid dispatching centers that are interconnected and work together through power grid software. What they present to the outside world is a "virtual supercomputer".

[0017] One of the most important problems that the power grid needs to solve is how to integrate and integrate the existing data and computing resources of the power system scattered around. In order to realize controlled resource sharing, the concept of virtual organization (Virtual Organization, VO for short) is proposed in the grid. A virtual organization is a collection of distributed individuals and organizations whose purpos...

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Abstract

The invention discloses a method for realizing parallel load flow computation based on a multi-core computer in power grid. The method comprises two-stage scheduling, wherein the first-stage scheduling realizes division and cooperation of load flow computation task, and the second-stage scheduling performs fine division to the computation task, in the multi-core computer, subtasks can be parallelly calculated, and after several iterative convergences, the computation results are collected and outputted by a coordination layer. The invention adopts the parallel computation and maximally utilizes the computation resource in virtual organizations, so that the computation speed is faster and the cost is lower.

Description

technical field [0001] The invention relates to a power system and a power grid system composed of power equipment, in particular to a method for realizing hierarchical power flow dispatching in the power system and a method for realizing parallel power flow calculation by using a multi-core computer. Background technique [0002] The power grid is a new system formed by integrating the existing power system using grid technology. The operation in the power grid needs to study the steady state operation of the power system. Given the network structure, parameters and boundary conditions that determine the operating status of the power system, one of the methods to determine the steady-state operating status of the power system is power flow calculation. From a mathematical point of view, it can be summarized as solving a set of nonlinear equations and making the solution satisfy certain constraints. [0003] The power flow calculation method used in the early stage is a si...

Claims

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Application Information

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IPC IPC(8): G06F9/50
Inventor 李文中吕琦司春锋王昊陆桑璐陈道蓄
Owner NANJING UNIV
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