Method and device for robust interval wind power scheduling based on consideration on wind power field current collecting line fault

A technology for wind farms and collecting lines, applied in the field of robust interval wind power dispatching, can solve problems such as the influence of system safety, the lack of fault tripping of the collecting lines of wind farms, etc.

Inactive Publication Date: 2014-12-24
STATE GRID CORP OF CHINA +1
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Problems solved by technology

Specific to the aspect of robust wind power active power dispatching, it generally refers to the impact of the uncertainty of wind power forecasting results on system security, and lacks the consideration of fault tripping of wind farm collector lines

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  • Method and device for robust interval wind power scheduling based on consideration on wind power field current collecting line fault
  • Method and device for robust interval wind power scheduling based on consideration on wind power field current collecting line fault
  • Method and device for robust interval wind power scheduling based on consideration on wind power field current collecting line fault

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Embodiment Construction

[0109] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0110] The working principle of this technical solution is: in the case of large-scale wind power centralized access, the operation safety of the power system caused by the uncertainty of the multi-fault of the wind turbine collector line, a wind power system based on the minimum wind curtailment is established. A two-layer mixed-integer interval optimal scheduling model for rods. The double-level mixed integer programming problem is further transformed into a...

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Abstract

The invention relates to a method and a device for robust interval wind power scheduling based on consideration on wind power field current collecting line fault. The method includes, from the points of power system dynamic response capacity and section safety, building a worst scene model with consideration on system running safety on the circumstance of wind power field current collecting line m faults; according to the worst scene model, taking the minimum wind curtailment demand as the target to optimize the model and taking the system running safety requirement on the circumstance of the worst wind power output as a constraint condition to build a robust dual-layer wind power mixed integer interval optimization model; according to a variable equivalent substitution method and a strong dual principle of linear programming, transforming the robust dual-layer wind power mixed integer interval optimization model into the problem about single-layer secondary programming, and utilizing an interior point method to solve the optimal thermal power output planned value and the maximum wind power planned interval; and finally performing wind power scheduling according to the optimal thermal power output planned value and the maximum wind power planned interval so as to achieve the robust interval wind power scheduling.

Description

technical field [0001] The invention relates to the technical field of power system operation and control, in particular to a method and device for robust interval wind power dispatching in consideration of faults in wind farm collection lines. Background technique [0002] Wind power has great potential for development and utilization, and is an important part of the future energy system. However, the predictability and controllability of wind power is poor, and the grid structure and protection configuration of wind farm collection lines are weak, which makes the large-scale grid connection of wind power lead to a significant increase in the uncertainty of power system operation, which may lead to the use of deterministic models The dispatching strategy obtained is infeasible in actual operation, such infeasibility includes insufficient dynamic reserve capacity of the system, lack of transmission capacity of contact sections, and violation of voltage security constraints. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46
CPCY02E10/76
Inventor 陈建华杨志刚崔慧军李膨源王东立康伟翟丙旭
Owner STATE GRID CORP OF CHINA
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