Estimation method of lost generated energy of out-of-order fan

A technology of power generation and wind turbines, which is applied in the field of estimation of power generation loss of faulty wind turbines, and can solve the problems of power generation loss of wind turbines, which are difficult to quantify and evaluate

Active Publication Date: 2014-12-17
NARI NANJING CONTROL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two aspects to the economic loss caused by the failure of the fan, one is the maintenance of the equipment, and the other is the power generation lost by the fan. Quantitative estimation method, so it is difficult to carry out quantitative evaluation

Method used

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  • Estimation method of lost generated energy of out-of-order fan
  • Estimation method of lost generated energy of out-of-order fan
  • Estimation method of lost generated energy of out-of-order fan

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Embodiment 1

[0091] Assuming that there are n wind turbines in the wind farm construction, the number of wind turbines is 1~n, and the number of wind turbines is n i Represents the fan numbered i, where i∈[1,n].

[0092] fan n i In time period t ∈ [t 1 ,t 2 ] If a failure occurs within ], the fan n will be i The process for estimating the lost generation is as follows:

[0093] 1. According to the geographical information of the wind turbine, the undirected graph model of the wind turbine is established. The model is represented by a (n+2)×(n+2) dimensional matrix D, the subscript of the matrix indicates the number of the fan, and the content of the matrix stores the physical distance between the two fans, that is, D[i][j] represents the fan no i with fan n j The physical distance between, where i,j∈[1,n]. In particular, n+1 and n+2 are numbers of virtual fans, D[i][n+1]=∞, D[i][n+2]=∞.

[0094] 2. According to the undirected graph model D of the fan, try to obtain the geographica...

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Abstract

The invention discloses an estimation method of lost generated energy of an out-of-order fan. The estimation method comprises the steps of 1) building an undirected graphical model of a fan according to the geographic information of the fan, 2) when the fan is out of order and stops running, trying to obtain two normally running fans closest to the out-of-order fan in geographic positions according to the undirected graphical model of the fan, 3) if succeeding in locating, estimating the lost generated energy of the out-of-order fan during the out-of-order period by use of the wind speeds and the wind directions of the two normally running fans closest to the out-of-order fan in the geographic positions, and4) if failing in locating or if the distance between the located fan and the out-of-order fan is greater than the distance between an anemometer tower and the out-of-order fan, estimating the lost generated energy of the out-of-order fan during the out-of-order period by use of the wind speed and the wind direction of the anemometer tower. The estimation method of the lost generated energy of the out-of-order fan realizes reasonable estimation on the lost generated energy of the fan during the out-of-order period and then is capable of providing data basis for quantitative evaluation on the economic losses caused by the faults of the fans in a wind power plant.

Description

technical field [0001] The invention belongs to the technical field of wind farms, and in particular relates to a method for estimating the lost power generation of a faulty wind turbine. Background technique [0002] In recent years, with the rapid and sustainable development of my country's economic construction, the demand for energy is increasing day by day. However, traditional fossil energy sources such as petroleum and coal are increasingly in short supply worldwide. On the other hand, the United Nations Framework Convention on Climate Change and the Kyoto Protocol require governments around the world to carry out energy conservation and emission reduction, which puts my country's energy supply under great pressure. . Wind energy is a clean, safe and efficient energy, which has important positive significance in protecting the ecological environment, delaying global warming, and promoting sustainable development. Therefore, wind energy can be used as a way to solve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06
Inventor 朱守让张滔王伟成月良朱颂怡
Owner NARI NANJING CONTROL SYST
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