Large-scale power system ill-condition load flow analysis system

A large-scale power and power flow analysis technology, applied in instruments, data processing applications, calculations, etc., can solve problems such as non-convergence and increased load, and achieve the effect of solving problems and improving convergence.

Inactive Publication Date: 2015-06-24
SHANGHAI JIAO TONG UNIV +1
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Problems solved by technology

The system has the ability to solve and analyze the ill-conditioned power flow of large-scale power systems, and can solve the problem t

Method used

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  • Large-scale power system ill-condition load flow analysis system
  • Large-scale power system ill-condition load flow analysis system
  • Large-scale power system ill-condition load flow analysis system

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Experimental program
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Embodiment 1

[0031] Such as figure 1 As shown, this embodiment includes: a BPA data interface module for realizing seamless read and write operations of BPA data files, a sparse matrix calculation module for realizing sparse matrix related processing in power system power flow calculation, a system modeling module, Power flow calculation module and power flow result analysis module, in which:

[0032] The BPA data interface module: because the domestic power grid enterprises tend to use the BPA file format to store actual power grid data, for this reason, based on the idea of ​​object-oriented programming, a BPA data interface module with a dynamic link library is developed using C++. This module not only has the seamless reading and writing function of BPA data files, but also provides APIs for other modules.

[0033] In this embodiment, the module completes the following operations:

[0034] The hierarchical structure analysis of the BPA data file is used to determine the storage loca...

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Abstract

The invention discloses a large-scale power system ill-condition load flow analysis system and belongs to the technical field of power system simulation and analysis. The system comprises a BPA data interface module, a sparse matrix calculation module for related sparse matrix processing in the load flow calculation, a system modeling module, a load flow calculation module and a load flow result analysis module. A conventional NR algorithm and a PQ decomposition algorithm are adopted to obtain a power system load flow calculation result rapidly and efficiently according to a power grid data file (*.dat) of the PSD-BPA form. The problem that part of load flow is not convergent is solved by using the PQ decomposition algorithm as an NR algorithm initial value after repeated iteration; the LM method effectively realizes ill-condition load flow solutions and analysis under the extreme operating situation.

Description

technical field [0001] The invention relates to a system in the technical field of power system simulation and analysis, in particular to a system capable of solving and analyzing ill-conditioned power flow in a large-scale power system by using different algorithms. Background technique [0002] The power flow of a power system refers to the power flow that flows in the power network after the power injected by the source and the output power of the load are given. The power flow calculation of the power system is the cornerstone of power system analysis to determine the calculation work of the stable operating state of the power system under the given grid and known grid operating conditions, and to provide initial values ​​for the short-circuit calculation and stability calculation of the power system. The essence of power flow calculation is to solve a set of nonlinear equations. This system of equations characterizes the relationship between power system node voltage a...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
CPCG06Q10/06393G06Q50/06
Inventor 张道天严正赵文恺张逸飞曹路李建华范翔
Owner SHANGHAI JIAO TONG UNIV
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