Wind power penetration power limit analysis method based on wind power randomness and correlation

Abstract

The invention discloses a wind power penetration power limit analysis method based on wind power randomness and correlation. The method comprises the following steps of: firstly, constructing a wind power penetration limit calculation model, setting system information and initial parameters, and randomly generating a control variable initial value and a particle initial speed, carrying out latin hypercube sampling, generating initial sample data and sorting the samples, then calculating the system power flow of the particles under each wind speed sample, and judging whether the opportunity constraint is met or not, adding opportunity constraints into a fitness function, calculating fitness values of all particles, obtaining an individual optimal value and a global optimal value, and updating speeds and positions of all the particles, and then judging whether the maximum number of iterations is satisfied, if not, returning to recalculate the system power flow of the particles under eachwind speed sample, and if so, outputting an optimal decision variable and a wind power penetration limit value. According to the method, the wind power penetration limit value of each access point under the conditions of wind speed randomness and correlation can be effectively calculated.

Description

technical field [0001] The invention belongs to the field of power system operation and control, in particular to a wind power penetration power limit analysis method based on wind power randomness and correlation. Background technique [0002] Wind energy, as a renewable, non-polluting green energy, has become increasingly prominent in its large-scale development and utilization in alleviating energy crises, protecting the environment, and promoting sustainable development. The most mature new energy power generation technology with the greatest potential for large-scale development and commercialization. With the country's strong support for renewable energy power generation in terms of policy, my country's wind power construction has also entered a period of rapid development. [0003] However, due to the inherent randomness, intermittency, volatility and correlation of wind energy, the connection of large-scale wind power will definitely have a serious impact on the saf...

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Problems solved by technology

[0004] Since the impact of wind power access on the system involves many factors, the scope is wide, and the analysis and calculation are very complicated, so far there is no unified method to solve the limit of wind power penetration power.

Existing methods generally can only solve the limit of wind power penetration power for a specific constraint factor, and cannot comprehensively consider multiple constraints that affect wind power access, and cannot fully consider various operating modes of the system and wind speed of wind farms condition

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