A Modeling Method of Transmission Margin Control Model Considering Random Probability

A stochastic probability model and power transmission margin technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as time-consuming, difficult to fully reflect the situation, and large amount of calculation

Active Publication Date: 2016-04-20
STATE GRID CORP OF CHINA +1
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  • Description
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Problems solved by technology

Therefore, if the conventional power flow method is used for power system planning and operation analysis, a large number of scheme calculations are required for various random situations, which not only requires a large amount of calculation, takes a long time, and is difficult to fully reflect the situation

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  • A Modeling Method of Transmission Margin Control Model Considering Random Probability
  • A Modeling Method of Transmission Margin Control Model Considering Random Probability
  • A Modeling Method of Transmission Margin Control Model Considering Random Probability

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Embodiment Construction

[0082] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0083] Such as figure 1 , provide a kind of transmission margin control model modeling method considering stochastic probability, described method comprises the following steps:

[0084] Step 1: Establish a random probability model;

[0085] Step 2: Carry out the planned random power flow calculation of large-scale interstitial power supply connected to the grid;

[0086] Step 3: Establish a transmission margin control model considering random probability.

[0087] The random probability model in the step 1 includes a random model of a wind farm, a random model of a conventional unit and a random model of a bus load; the random model of a wind farm includes a random model of a wind speed and a random model of a power of a wind generator.

[0088] The wind speed random model is processed into a three-parameter Weibull model, and the position parameter of th...

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Abstract

The invention provides a method for modeling a power transmission margin control model considering random probability. The method comprises the following steps of establishing a random probability model; carrying out scheduled random trend calculation when a large-scale intermittent type power source is accessed into a grid; and establishing the power transmission margin control model considering the random probability. The method for modeling the power transmission margin control model considering the random probability has the advantages that the accommodating capability of the grid on the new energy sources is improved for further exploring the power transmission margin control algorithm when the large-scale intermittent power source is accessed, and the technical basis is provided for the advanced control of the scheduled trend when the large-scale wind power is accessed.

Description

technical field [0001] The invention belongs to the technical field of electric power automation, and in particular relates to a modeling method of a power transmission margin control model considering random probability. Background technique [0002] Considering that the output power of large-scale intermittent grid-connected power sources (such as wind power, solar energy, etc.) has obvious randomness and volatility, the traditional transmission margin model based on determining the power flow power of the grid impedance characteristic can only give the system in a certain Or the relationship between branch power flow status and the safety threshold under certain specified system states cannot fully evaluate the impact of such power sources on the safety and stability limit of the entire network after they are connected to the grid. [0003] The power system generally needs to plan the development of power supply, power grid, and load for several years or even decades. Whe...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06Q50/06
CPCY02E60/00
Inventor 董炜张传成丁强戴赛蔡帜许丹闫翠慧
Owner STATE GRID CORP OF CHINA
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