Method for calculating reliability of current collection system of wind power plant

A calculation method and reliability technology, applied in the direction of calculation, data processing applications, instruments, etc., can solve the problems that cannot be applied, and the collection system model cannot be combined with the time series autocorrelation characteristics of wind speed

Inactive Publication Date: 2017-01-25
CONSTR BRANCH CHONGQING ELECTRIC POWER +1
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Problems solved by technology

The aforementioned studies mainly analyze the influence of wind conditions, terrain, unit failure, etc. on the reliability of wind farms. There are few studies on the reliability of wind farms with different collector system topologies, and the existing studies generally use analytical methods to model and solve , but the analytical collector system model cannot combine the time-series autocorrelation characteristics of wind speed, and cannot be applied when evaluating the reliability of wind farms with energy storage

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  • Method for calculating reliability of current collection system of wind power plant
  • Method for calculating reliability of current collection system of wind power plant
  • Method for calculating reliability of current collection system of wind power plant

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Embodiment

[0103] as follows figure 1 , figure 2 As shown, the reliability calculation of wind farm power collection system is as follows:

[0104] There are 70 wind turbines in the wind farm, and 7 wind turbines are installed in each row of feeders, arranged in 10 rows. The cut-in, rated and cut-out wind speeds of the fan are 4, 15 and 25m / s respectively, and the rated power is 2MW. The distance between adjacent fans is 500 meters, the distance between adjacent lines is 900 meters, and the isolation and switching time are set to 1 hour.

[0105] The reliability parameters of wind farm equivalent wind turbine components are shown in Table 1.

[0106] Table 1 Reliability parameters of equivalent wind turbine components

[0107] element Failure rate (times / year) Repair time (hour / time) Wind Turbine 1.5 600 tower cable 0.015 / km 240 collector transformer 0.0131 240

[0108] Input the reliability parameters of the feeder line and calculate the rel...

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Abstract

The invention discloses a method for calculating reliability of a current collection system of a wind power plant. The method comprises the following steps: S1) establishing an air speed and fan capacity model; S2) establishing a reliability model of an equivalent wind turbine generator and the current collection system; S3) calculating an access set and an isolation set of the equivalent wind turbine generator; S4) defining the reliability index of the wind power plant of the current collection system; and S5) adopting a sequential monte carlo method for evaluating the reliability of the wind power plant of the current collection system. According to the method provided by the invention, the accuracy of the reliability of the current collection system of the wind power plant can be increased, the reliability of the stored energy-containing wind power plant can be calculated and a reference is provided for the selection of a topological structure of the current collection system.

Description

technical field [0001] The invention relates to the technical field of wind farms, in particular to a method for calculating the reliability of a power collection system of a wind farm. Background technique [0002] Wind energy has the characteristics of wide distribution, clean and renewable, etc. With the depletion of fossil energy and the deterioration of environmental problems, wind energy has been developed on a large scale. Due to the continuous decline in the cost of wind power generation and the increasing maturity of wind power technology, the installed capacity of wind power and the scale of wind farms are gradually expanding, and large-scale grid connection is the inevitable trend of wind power development. The output of wind power depends on the wind speed, which has uncontrollable characteristics such as volatility and intermittency. Therefore, the output of wind power is intermittent and fluctuating. Wind power grid integration will significantly reduce the rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06
CPCG06Q50/06
Inventor 温力力谢开贵周平胡博唐文左王蔓莉梁文举聂佳焰孔得壮
Owner CONSTR BRANCH CHONGQING ELECTRIC POWER
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