Wind power cluster access mode planning method by considering wind power uncertainty and reactive power flow and voltage constraints

Abstract

The invention discloses a wind power cluster access mode planning method by considering wind power uncertainty and grid-connected region grid reactive power flow and voltage constraints. According tothe method, an alternating-current power flow model is adopted, a collection station node is used as an independent node for modeling; reactive power loss, the voltage of a gathering station and reactive power compensation are added into model operation constraints; the coupling between the grid-connected power of the wind power plant and the active and reactive power flow, line loss and node voltage of the system is considered; and meanwhile, the uncertainty of wind power output is considered by applying a random optimization method, and wind curtailment in an uncertainty scene is punished under the condition of ensuring sufficient wind power consumption of a basic scene, so that the planning scheme is more flexible and economic on the premise of ensuring new energy consumption, and a commercial solver is adopted for solving, and the global optimum of a solving result is ensured.

Description

technical field [0001] The invention belongs to the technical field of new energy access planning, and in particular relates to planning of a wind power cluster access mode considering wind power uncertainty and grid reactive power flow and voltage constraints in a grid-connected area. Background technique [0002] Energy is the basis and driving force for social and economic development. With the gradual depletion of fossil energy and the intensification of environmental pollution, traditional fossil fuel power generation is gradually replaced by renewable energy, and vigorously developing new energy has become the consensus of all countries. New energy access planning is the premise of using new energy, and it is of great significance to promote the development of renewable energy, absorb and improve the efficiency of social energy utilization, as well as national energy conservation and emission reduction. [0003] With the continuous increase of the proportion of new en...

AI Technical Summary

Problems solved by technology

In practice, especially when large-scale wind power is integrated into the grid, a large amount of reactive power support is required to maintain the voltage stability of the collection station, and the long-distance high-power transmission of the collection access line will generate a large amount of reactive power loss, which should not be ignored.

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