Initial value calculation method suitable for large-scale data load flow calculation

A large-scale data and power flow calculation technology, which is applied in computing, electrical digital data processing, special data processing applications, etc., can solve problems such as data flow calculation non-convergence, and achieve the effect of improving convergence

Active Publication Date: 2013-07-10
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

[0008] In order to overcome the above-mentioned defects, the present invention provides an initial value calculation method suitable for large-scale data flow calculation, analyzes the causes of the power flow calculation problems in large-scale power grids, and based on the existing algorithm according to the actual demand. Newton's method is improved to solve the non-convergence problem of large-scale power grid data flow calculation

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  • Initial value calculation method suitable for large-scale data load flow calculation
  • Initial value calculation method suitable for large-scale data load flow calculation

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Embodiment Construction

[0027] Such as figure 2 As shown in , an initial value calculation method suitable for large-scale data flow calculation includes the following steps:

[0028] (1). Default balance node;

[0029] (2). Carry out power flow calculation simulation;

[0030] (3). Judging whether the calculation result is convergent, if it is convergent, proceed to step 4, otherwise end;

[0031] (4). Change the default balance node to the original node type;

[0032] (5). Carry out power flow calculation.

[0033] In the step 1, the way of presetting the balance node includes manual setting and automatic setting.

[0034] Described step 1 comprises the following steps:

[0035] (1-1). Select the way to preset the balance node. If it is manually set, go to step 1-2, otherwise go to step 1-3;

[0036] (1-2). Manually select the preset balance point, end;

[0037] (1-3). Calculate the maximum power error bus and set the preset balance point.

[0038] In said step 1-2, the preset balance poin...

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Abstract

The invention provides an initial value calculation method suitable for large-scale data load flow calculation. The method comprises the following steps: (1) presetting a balance node; (2) carrying out load flow calculation simulation; (3) judging whether the result is convergent, carrying out the step 4 if the result is convergent, otherwise, the process is over; (4) changing the preset balance node into an ancestor node; and (5) carrying out load flow calculation. The initial value calculation method suitable for large-scale data load flow calculation, provided by the invention, analyzes the reasons of load flow calculation problems of a large-scale power network and improves the Newton method on the base of the conventional calculation method according the condition of actual demands so as to solve the problem that the data load flow calculation of the large-scale power network is not convergent.

Description

technical field [0001] The invention belongs to the field of power system simulation analysis, and in particular relates to an initial value calculation method suitable for large-scale data flow calculation. Background technique [0002] Power flow calculation is the basis of various static and dynamic analysis and calculation of power system. A power system power flow algorithm that is mature, stable, fast in convergence speed, and good in convergence performance is very important for power grid planning departments and power grid dispatching and operation departments to conduct power grid planning and annual operation mode analysis. [0003] The essence of power flow calculation is to solve large-scale nonlinear equations, and the Newton-Raphson method (Newton method for short) is a classic method for solving nonlinear equations. In the late 1960s, with the introduction of sparse technology and node optimization numbering technology, the Newton-Raphson method became an ex...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 李芳陈兴雷黄训诚付红军胡扬宇孙建华王景刚
Owner CHINA ELECTRIC POWER RES INST
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