High-proportion wind power access power grid ultra-short-term scheduling plan robust optimization method

Abstract

The invention discloses a high-proportion wind power access power grid ultra-short-term scheduling plan robust optimization method considering section out-of-limit risk balance degree. For a system with high-proportion wind power access, the wind power is snet out through a tie line is an important way to consume the wind power. Based on wind power output probability characteristics, constructingan ultra-short-term scheduling plan robust optimization model; carrying out approximation and linearization processing on non-integratable items in a model objective function; and solving the model byadopting a chaotic quantum particle swarm algorithm to obtain the output of the buffer unit and the wind power receiving interval of each node, thereby realizing an ultra-short-term scheduling plan with minimum section out-of-limit risk and optimal economical efficiency for power distribution balance of each line of the power transmission section. The invention provides a robust optimization method for an ultra-short-term scheduling plan of a high-proportion wind power access power grid considering section out-of-limit risk balance degree, which can provide a basis for realizing minimum section out-of-limit risk for ultra-short-term scheduling of large-scale wind power sent out through a tie line.

Description

technical field [0001] The invention belongs to the field of electric power system dispatching methods, and in particular relates to a robust optimization method for ultra-short-term dispatching plans considering the cross-section risk balance degree for a power grid with a high proportion of wind power connected. Background technique [0002] With the continuous increase of installed capacity of wind power in major wind power bases in my country, in the balance of electricity and electricity, wind power output will change from being only a supplement to conventional energy to "equal share" with conventional energy. However, as the proportion of wind power in the system continues to increase, the randomness and volatility of wind power output increase the difficulty of dispatching decision-making control. Therefore, it is necessary to fully consider system security and economic issues and formulate a reasonable power system dispatching plan with a high proportion of wind powe...

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