Independent micro-network optimized configuration method and device

An optimized configuration, independent technology, applied in the direction of AC network load balancing, single-network parallel feeding arrangement, photovoltaic power generation, etc., can solve the problem that wind speed, light intensity and load uncertainty cannot be effectively considered.

Active Publication Date: 2014-08-13
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention provides an independent micro-grid optimal configuration method and device, which solves the problem that the existing independent micro-grid optimal configuration method cannot effectively consider wind speed, light intensity and load uncertainty when performing optimal configuration. question

Method used

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  • Independent micro-network optimized configuration method and device
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  • Independent micro-network optimized configuration method and device

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Experimental program
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Embodiment 1

[0084] Such as figure 1 As shown, it is a flow chart of an independent microgrid optimization configuration method according to the present invention, and the method may specifically include:

[0085] Step S11: Using the obtained independent microgrid related data on wind speed, light intensity and load in a certain historical year, respectively determine the corresponding probability density functions of the wind speed, light intensity and load at each time of day in each month of the historical year .

[0086] In the embodiment of the present invention, based on the uncertainty of the wind speed, light intensity and power load of the independent microgrid, corresponding probability models are respectively established for subsequent operations, specifically:

[0087] 1. Probabilistic model of wind speed

[0088]In the embodiment of the present invention, a two-parameter Weibull (Weibull) distribution function is used to describe the wind speed distribution characteristics o...

Embodiment 2

[0181] Such as figure 2 As shown, it is a schematic structural diagram of an independent micro-grid optimization configuration device of the present invention, which may include:

[0182] The first determination module S21 is used to use the acquired data related to the wind speed, light intensity and load in a certain historical year of the independent microgrid to respectively determine the wind speed, light intensity and load at each time of the day in each month in the historical year. The corresponding probability density function of .

[0183] In the embodiment of the present invention, the first determination module S21 may include:

[0184] The first calculation subunit is used to calculate the average value and standard deviation of wind speed, light intensity and load at each time of day in each month by using the obtained independent microgrid related data on wind speed, light intensity and load in a certain historical year;

[0185] The fourth determination subu...

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Abstract

The invention discloses an independent micro-network optimized configuration method and device. According to the method, aiming at uncertainty of air speed, illumination intensity and load, typical days of different months of one year are constructed by using probability models of the air speed, the illumination intensity and the load, subsequently by utilizing the multi-state system theory, the air speed, the illumination intensity and the load of the typical days are divided in a multi-state manner, then continuous uncertain state basis and probability distribution regulation of the continuous uncertain state basis are converted into a plurality of discrete certainty states to be processed, and thus the characteristics of force output of a fan, the force output of a photovoltaic cell and the load randomness can be directly simulated, the solution difficulty of an optimized configuration model is alleviated, the solved independent micro-network can be more reasonably configured, and the robustness of the wind-light output force and the load fluctuation is high.

Description

technical field [0001] The invention relates to the application field of an independent microgrid of a power system, and more specifically relates to a method and a device for optimal configuration of an independent microgrid. Background technique [0002] At present, improving energy utilization efficiency and improving energy structure has become an inevitable choice to solve the increasingly prominent contradictions between energy demand growth and energy shortage, energy utilization and environmental protection in the process of my country's rapid economic and social development. The energy supply system is connected to the large power grid in the form of a micro-grid and runs in parallel with the large power grid. It makes full use of the abundant clean and renewable energy in various places, and provides users with "green power" has become the development direction of my country's energy conservation and emission reduction. [0003] Among them, the microgrid is a system...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/32
CPCY02E70/30Y02E10/563Y02E10/566Y02E10/56
Inventor 赵波张雪松葛晓慧周丹
Owner STATE GRID CORP OF CHINA
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