A method for determining the optimal peak-shaving installed capacity of wind power based on outgoing channels

Abstract

The invention provides an external passage-based method for determining optimal peak-regulation installation scale of wind power. The method comprises the following steps of estimating building and running cost of a power transmission line, a wind power plant, a thermal power plant and a water pumping energy storage station according to a given ultrahigh-voltage power transmission line; giving outassembly proportion relation (maximum power) of four facilities under an initial state, supplying power to a load curve, and building an optimization model by taking minimum power utilization cost ofa terminal unit as a target; changing the proportion relation of the four facilities to obtain optimization results under different proportion relates, selecting the result with lowest terminal powercost from all optimization results, obtaining the installation scale (namely optimal peak-regulation installation scale of the wine power) of the wind power plant, the thermal power plant and the water pumping energy storage station according to a corresponding matching scheme. By building the optimization model and determining the optimal proportion of wind thermal storage and transmission, thepower utilization cost of the terminal is lowest on the premise that wind power is enabled to be utilized very well, and the wind abandon rate and the wind power terminal cost can be substantially reduced.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method for determining the optimal peak-shaving installed capacity of wind power based on an outgoing channel. Background technique [0002] Although the theoretical research in the field of technical and economic evaluation and optimization is very mature, there are few studies on the application of technical and economic evaluation and optimization methods to the peak regulation and transmission of new energy power systems. China has not yet established an effective framework system for evaluation and optimization of peak shaving and transmission services to fully, scientifically and reasonably reflect whether wind power generation, peak shaving dispatch and long-distance transmission are reasonable, whether operations are normal, and resource optimal allocation Whether the function works, etc. [0003] If there is no long-distance transmission of wind power, the pow...

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Problems solved by technology

We should not blindly attach importance to the growth of installed capacity of wind farms while ignoring the construction of peak-shaving capacity of the system, and we should not ignore the construction of pumped storage because of the high construction cost.

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