Optimal scheduling method for multi-type flexible power supply

Abstract

The invention relates to an optimal scheduling method for a multi-type flexible power supply. The method in the following source-network coordinated scheduling strategy comprises steps of arranging the minimum output capacity of a thermal power generating unit, a wind power photoelectric unit, a runoff hydroelectric generating unit and a reservoir capacity hydroelectric generating unit to be loaded, judging the load source condition at the current moment, when the source is smaller than the load, increasing the output according to the storage capacity of the hydroelectric generating unit, the thermal power generating unit and the gas generating unit in sequence, if the source is still smaller than the load, arranging external power purchase, when the source is greater than the load, reducing the output according to the sequence of the thermal power generating unit, the reservoir capacity hydroelectric generating unit and the gas generating unit, and if the source is still greater than the load, continuously reducing the output according to the sequence of wind power, photoelectric and runoff hydroelectric generating sets. Based on the space-time complementation characteristic of multiple types of power supplies, the wind-light-fire-water-combustion power generation sequence is coordinated through a source-network coordinated scheduling strategy, wind and light abandoning can be effectively reduced, wind and light cluster absorption is improved, the wind power and light electricity absorption capacity and operation benefits of the system are more advantageous under the source-network synergistic effect, and the power system operates more efficiently and stably.

Description

Technical field [0001] The present invention relates to the field of new energy optimization scheduling techniques, and more particularly to a multi-type flexible power supply optimization scheduling method. Background technique [0002] Wind power and photovoltaic power generation can differ from traditional fossil energy in the biological energy, which has excellent randomness. With the vigorous development of the wind turbine and the photovoltaic generator, the large-scale wind power, the photovoltaic electric field is concentrated and the network to the power system has added many uncertain factors. [0003] About large-scale wind power, photoelectric concentrated grid, domestic and foreign related research are concentrated on wind power, photoelectric control and network power supply, frequency impact, and impact on power grid, and in addition to this. The research of the reactive voltage control, actual control, and predicting forecasting of the network dot grid, has not be...

AI Technical Summary

Problems solved by technology

[0003] Regarding large-scale wind power and photovoltaic centralized grid connection, relevant research at home and abroad has focused on the impact of large-scale centralized wind power and photovoltaic on the local grid voltage and frequency at the grid connection point, as well as the impact on the grid power flow. Research on reactive power and voltage control, active power control, and forecasting of power grids in outlets does not involve much research on source-network coordination control technology that considers multi-type flexible power sources to improve the efficient consumption of wind and power clusters

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