Evaluation method of abandoned wind power in large wind power bases based on benchmark units

Abstract

The invention discloses an assessment method for large-scale wind electricity base discard wind electric quantity based on range pole machine sets. The assessment method for the large-scale wind electricity base discard wind electric quantity based on the range pole machine sets comprises the following steps of calculating the average output coefficient of all the range pole machine sets of a wind electricity plant every five minutes, calculating real-time start-up capacity of the wind electricity plant every five minutes, calculating theoretical output of the wind electricity plant every five minutes, calculating discard wind electric quantity every five minutes, obtaining the discard wind electric quantity of the whole wind electricity plant in a certain time quantum, and obtaining the discard wind electric quantity of the whole wind electricity base by calculating the discard wind electric quantity of the each wind electricity plant in the wind electricity base. The assessment method for the large-scale wind electricity base discard wind electric quantity based on the range pole machine sets has the advantages of being simple in operation, low in cost and capable of accurately carrying out calculation on the discard wind electric quantity.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a method for evaluating the amount of abandoned wind power of a large-scale wind power base based on a benchmark unit. Background technique [0002] The curtailed wind power of wind farms refers to the power that can be generated by wind farms but cannot be generated due to factors such as grid transmission channels and safe operation needs. [0003] Abandoning wind is a common phenomenon in the process of large-scale development of wind power, which is very similar to abandoning water in the process of hydropower generation. Large-scale wind power bases cover a wide area and generally include multiple wind farms or groups of wind farms. Due to the transmission limit of the grid transmission channel, real-time load balance and other factors, a certain degree of wind curtailment will result. A correct and scientific understanding of abandoned wind power and a reasonable calcu...

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Problems solved by technology

However, for 10-million-kilowatt-scale wind power bases, the actual output simultaneous rate of each wind farm is generally low, so calculations using this method will generally result in inaccurate calculations of abandoned wind power

Another method is to measure the actual wind energy resources through the wind measuring tower, and compare the theoretical output of the computer group under the condition of no wind curtailment with the actual power generation, so as to realize the estimation of the curtailed wind power, but the premise of this method is It means that all wind farms in the wind power base have corresponding wind measuring towers, but when the wind farm does not have corresponding wind measuring towers, this method will fail, especially for 10 million-kilowatt wind power bases, it is difficult to provide each Wind farms have corresponding wind measuring towers

The cost of this method is relatively high, and the operation is relatively complicated

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