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An Improved Monte Carlo Method for Solving Interval DC Power Flow Models

A DC power flow model, a technology within the interval, applied in the field of power systems to achieve easy-to-obtain results

Active Publication Date: 2022-04-19
SHENZHEN POWER SUPPLY BUREAU +1
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  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the technical problems existing in the traditional algorithm to a certain extent, and proposes an improved Monte Carlo method for solving the interval DC power flow model. While using the Monte Carlo method to solve the interval power flow model, extreme scenarios are used to further improve the Monte Carlo method. The sampling efficiency of the Carlo method, thereby improving the accuracy of the existing interval DC power flow results and the efficiency of the interval DC power flow algorithm

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  • An Improved Monte Carlo Method for Solving Interval DC Power Flow Models
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  • An Improved Monte Carlo Method for Solving Interval DC Power Flow Models

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[0053] In the following description, specific details such as specific system structures and technologies are presented for illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0054] In order to illustrate the technical solutions described in the present invention, the following description will be made through specific embodiments in conjunction with the accompanying drawings.

[0055] The embodiment of the present invention proposes an improved Monte Carlo method for solving the interval DC power flow model. The flow chart of the method is as follows figure 1 As shown, spec...

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Abstract

The invention discloses an improved Monte Carlo method for solving an interval DC power flow model, which includes the following steps: 1) establishing an interval DC power flow model; 2) adopting stochastic simulation technology in the interval of corresponding load, generator active output and transmission line parameters Generate random variables, which are called scenarios; 3) Add extreme scenarios based on the scenarios generated in step 2), and the extreme scenarios refer to the upper and lower boundaries of the parameter interval; 4) Statistics of the maximum and Minimum value; 5) Output the results, including the interval calculation results of phase angle and transmission power. The improved Monte Carlo method for solving the interval DC power flow model of the present invention uses stochastic simulation technology to generate a series of scenarios in the interval of input data, and obtains the interval of the power flow by counting the maximum and minimum values ​​of DC power flow variables in the generated scenarios. And by considering the extreme scenarios of the input data, the accuracy of the interval DC power flow model solution is further improved.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to an improved Monte Carlo method for solving an interval DC power flow model. Background technique [0002] The DC power flow model is a linearized model of the AC power flow model. It mainly simplifies the AC power flow model in the following four aspects: 1) The voltage amplitude of all nodes in the system is 1p.u. (per unit value); 2) Ignore all lines 3) ignore all reactive power balance equations; 4) ignore all non-standard transformation ratios of transformers. DC power flow is a method to quickly obtain the node voltage phase angle of the power grid and the rough results of the transmission power of each line. It is mainly used in practical projects such as transmission line operation management, transmission line expansion planning, and unit combination models considering safety. However, considering various internal and external uncertainties in the actual power grid...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/06H02J3/00
CPCH02J3/00G06Q10/06315G06Q50/06H02J2203/20Y02E40/70Y04S10/50
Inventor 史军徐旭辉林子钊程韧俐张宇童郑涵何晓峰华栋张聪孙高星祝宇翔车诒颖张炀
Owner SHENZHEN POWER SUPPLY BUREAU
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