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A large-scale power system power flow convergence adjustment method for key nodes

A large-scale power and system flow technology, applied in the direction of AC networks with the same frequency from different sources, can solve problems such as inability to locate

Active Publication Date: 2022-03-22
NORTHEAST DIANLI UNIVERSITY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to make up for the inability of the existing overall adjustment method to locate, and to specifically affect the lack of nodes and factors, to emphasize the identification and adjustment of key nodes that lead to non-convergence of the power flow, and to propose a scientific, reasonable, and strong applicability , the effect is good, and the large-scale power system convergence adjustment method for key nodes can provide an intuitive basis for power flow adjustment

Method used

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  • A large-scale power system power flow convergence adjustment method for key nodes
  • A large-scale power system power flow convergence adjustment method for key nodes
  • A large-scale power system power flow convergence adjustment method for key nodes

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Embodiment Construction

[0019] A large-scale power system convergence adjustment method for key nodes of the present invention will be further described below using the drawings and embodiments.

[0020] A method for adjusting the convergence of power flow in a large-scale power system for key nodes is characterized in that it includes: establishing a judgment index for convergence of power flow through intermediate data iterated by the Newton-Raphson method; Identify the key influencing nodes and factors; describe the power flow convergence area according to the key influencing nodes and factors; adjust the key data volume depending on different adjustment targets; the specific content is as follows:

[0021] 1) Through the intermediate data of Newton-Raphson power flow iteration, the judgment index of power flow convergence is established: the intermediate process data of power flow iteration contains important information of the power grid, and in isolation, the solution results of each power flow ...

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Abstract

The present invention is a method for adjusting the convergence of power flow in a large-scale power system aimed at key nodes. The specific meaning identifies the key influencing nodes and factors; describes the power flow convergence domain according to the key influencing nodes and factors; and adjusts the key data volume depending on different adjustment targets. It has the advantages of being scientific and reasonable, strong applicability and good effect, and can provide an intuitive basis for power grid power flow adjustment.

Description

technical field [0001] The invention relates to the field of power system power flow analysis, and is a method for judging the convergence of power flow and identifying key nodes by using iterative intermediate information, defining the convergence domain of the power flow, and adjusting the data of the key nodes by using the convergence domain of the power flow. Background technique [0002] Power flow calculation is of great significance to the planning, design and optimal operation of the power grid. For large-scale power systems with heavy loads, it is easy for the power flow calculation to fail to converge. There are many factors that lead to non-convergence of power flow, including algorithms, model parameters, and injected data. Since Newton methods have been widely used in solving power flow problems, and grid parameters have been calibrated many times, it is generally considered in engineering that the injected data is not Rationality is an important reason for the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/06
CPCH02J3/06H02J2203/20
Inventor 安军宋俊达周毅博葛维春周东皓乔雪婧邓子晗
Owner NORTHEAST DIANLI UNIVERSITY