Template machine dynamic screening method considering fan random fault

A screening method and random fault technology, applied in wind power generation, AC network circuits, electrical components, etc., can solve the problems of not being able to truly reflect the wind power generation capacity of wind farms, and not considering the differentiation characteristics of prototype machines

Inactive Publication Date: 2017-12-22
STATE GRID LIAONING ELECTRIC POWER RES INST +1
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Problems solved by technology

[0004] The main problem with the current screening mechanism of prototypes is that the number of prototypes determined does not take into account the differentiated characteristics of the prototypes. Therefore, when the prototype itself is out of operation due to maintenance or failure, it cannot truly reflect the wind power generation of the wind farm.

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  • Template machine dynamic screening method considering fan random fault
  • Template machine dynamic screening method considering fan random fault
  • Template machine dynamic screening method considering fan random fault

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Embodiment Construction

[0052] The specific embodiments of the present invention will be described in detail below in conjunction with the specific embodiments. These specific implementation methods are only for description and are not used to limit the scope or implementation principles of the present invention. The protection scope of the present invention is still subject to the claims, including obvious changes or changes made on this basis.

[0053] Explanation of terms:

[0054] Sample machine: The wind turbines that do not participate in power curtailment are selected from all wind turbines in the wind farm to calculate the curtailed wind volume of the wind farm.

[0055] Abandoned wind power of wind farms: in a broad sense, it is defined as the difference between the theoretical power generation of a wind farm and the actual power generation of a wind farm. Unable to generate power.

[0056] The model machine method is a calculation method that calculates the theoretical output of the wind ...

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Abstract

The invention relates to an electric power system new energy technology field and particularly relates to a template machine dynamic screening method considering a fan random fault. The sample machine dynamic screening method considering draught fan random faults comprises steps of (1) collecting characteristic parameters of the draught fan, (2) classifying the draught fan, (3) making I equal to I, choosing a fan having a smallest Euler distance with Cj<^^> as a preset template in Ci and marking the preset template machine as bci, performing sorting on other fans according to distances between the fans and the template machine from the shortest distance to the longest distance, (5) solving a power deducing coefficient krc according to a formula as shown in description in Ci of a non-template machine using the preset template machine as reference, (7) calculating a relative deducing coefficient according to a formula as shown in description and calculating a formula as shown in description, (8) repeating steps (4)-(7) until obtaining a P<Ci>sigma corresponding to each cluster and (9) obtaining wind power at t moment of a whole wind field.

Description

technical field [0001] The invention relates to the technical field of new energy sources in power systems, in particular to a dynamic screening method for model machines considering random faults of fans. Background technique [0002] On January 18, 2013, the State Electricity Regulatory Commission issued the "Measures for Calculation of Abandoned Wind Power in Wind Farms (Trial)" (referred to as "Measures"), which clarified that when the output of wind farms is limited, the model machine method is used to calculate the limited wind power. At the same time, it is required that the number of wind farm prototype machines selected should not exceed 10% of the number of wind turbines in principle. At present, the model machine method used to evaluate the amount of curtailed wind is mainly used in two scenarios: one is to predict the amount of wind curtailed in the future, and guide the formulation of the power system operation mode considering the ability of the grid to accept ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCH02J3/386Y02E10/76
Inventor 孙立勇
Owner STATE GRID LIAONING ELECTRIC POWER RES INST
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