An optimal operation method of distribution system considering distributed wind power high-permeability grid connection

Abstract

The invention relates to a distribution system optimization operation method considering distributed wind power high-permeability grid connection. Under the condition of wind farm output and load fluctuation, the reactive power regulation capability of a wind turbine generator system is fully utilized, the system node voltage is controlled in a safe and high-quality range, and the phenomenon of fan disconnection caused by voltage quality problem is solved. Compared with an existing distribution system optimization model which generally takes economy as the objective, the wind power high-permeability grid-connected dissipation is taken as the optimization objective instead of the system operation economy objective, thereby ensuring that the active power emitted by the wind farm realizes full grid-connected dissipation as far as possible, and realizing the high permeability and efficient utilization of wind power resources.

Description

Technical field [0001] The invention belongs to the technical field of operation control methods for distributed wind power access to a distribution network, and specifically relates to an optimized operation method of a distribution system considering the high penetration of distributed wind power grid connection. Background technique [0002] In recent years, the renewable energy power generation technology represented by wind power generation has become mature. The distributed access of wind turbines to the distribution network can not only realize the full use of clean energy, but also improve the low voltage problem of load terminals in the traditional distribution network. Support the voltage of the distribution network. However, with the high penetration of wind power grid connection, its impact on the local distribution network has become increasingly prominent, mainly manifested in the overvoltage problem caused by grid connection. Therefore, it is of great significance...

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Problems solved by technology

[0005] In summary, fruitful results have been achieved in the research on the optimal operation of distributed wind power access distribution systems, but the main optimization goals of these results focus more on regulating the system voltage, and how to reduce the impact of wind power output uncertainty on the system voltage At the same time, the method of increasing the penetration rate of wind power still needs to be further studied and solved.

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