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Method of acquiring comprehensive load model parameters in online mode based on daily load curve

A comprehensive load model and comprehensive load technology, applied in data processing applications, instruments, calculations, etc., can solve the problem of not being able to obtain load model parameters in real time

Inactive Publication Date: 2015-09-16
HUNAN UNIV
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Problems solved by technology

[0004] The present invention provides a method for online acquisition of comprehensive load model parameters based on daily load curves, using the industry load characteristic matrix and substation daily load power curves to establish a power balance equation group, thereby obtaining the composition ratio of typical power consumption industries online in real time, overcoming the existing The problem that the load model parameters cannot be obtained in real time in the technology

Method used

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  • Method of acquiring comprehensive load model parameters in online mode based on daily load curve
  • Method of acquiring comprehensive load model parameters in online mode based on daily load curve
  • Method of acquiring comprehensive load model parameters in online mode based on daily load curve

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Embodiment 1

[0066] First, given the typical industry standard unit daily load curve of each industry, such as figure 2 shown.

[0067] Then, the typical industry standard unit daily load curve L of each industry j (t) corresponds to its maximum load value L j.max Supposed to be L 1.max =30,L 2.max =40, L 3.max =50, L 4.max =30, where j=1,2,3,4 represent heavy industry, light industry, agriculture, tertiary industry and municipal administration respectively, and t=1,2,...,48 represent each sampling time.

[0068] According to the formula (3.12), the standard unit daily load curve of each industry is denominated, and the daily load power curve P of each typical industry is obtained j (t), j=1,2,3,4, t=1,2,...,48. The calculated typical industry daily load power curve is as follows: image 3 shown.

[0069] P j (t)=L j (t)·L j.max (6)

[0070] Through the formula P b (t)=∑P j (t) Superimpose the daily load power curves of each typical industry at the corresponding...

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Abstract

The invention discloses a method of acquiring comprehensive load model parameters in an online mode based on a daily load curve. A typical power consumption industry load feature matrix is built for a typical user daily load curve acquired by a load control system; according to a substation daily load power curve synchronized with the above user daily load curve in time and acquired by an SCADA system, power balance equations are built, and a column vector for each typical power consumption industry load reference capacity is obtained; the typical power consumption industry load feature matrix is combined with column vectors formed by the typical power consumption industry load reference capacities to obtain a typical power consumption industry component ratio for the substation comprehensive load at each time point corresponding to the daily load curve. The method can effectively use the daily load curve of typical users and substations within an overall grid range conveniently acquired in actual engineering, a substation power consumption industry component ratio at each sampling time point of the daily load curve can be acquired, and a substation power consumption industry component ratio of each time period can be obtained in a simplified mode.

Description

technical field [0001] The invention belongs to the field of power system load modeling, in particular to a method for online acquisition of comprehensive load model parameters based on daily load curves. Background technique [0002] With the advancement of the interconnection process of power grids in major domestic regions, the scale of the power grid continues to expand, and the complexity of the power grid is also increasing. The voltage stability and dynamic stability of the power grid are becoming more and more prominent. The importance of the load model for the digital simulation of the power system is continuously strengthened, and the real-time simulation calculation of the power grid puts forward higher requirements for the real-time performance of the load model. The fundamental purpose of real-time simulation calculation is to improve the accuracy of simulation calculation results, so that dispatchers can grasp the influence of network topology and load changes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06
Inventor 李欣然蒋子丹宋军英尹丽曹一家韩东
Owner HUNAN UNIV
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