Wind-solar-battery integrated scheduling strategy

Abstract

The invention discloses a wind-solar-battery integrated scheduling strategy. By using the method, a utilization rate of intermittent energy and an effect of peak-load shifting can be increased and realized; a thermal power generating unit start and stop frequency can be reduced; starting up and shutdown cost and rotation standby cost are reduced; and phenomena of wind abandoning and light abandoning are effectively prevented. The technical scheme is characterized in that the method aims at a problem brought by individual wind and power access network, wind, power and photovoltaic are considered into one body, and integrated output is achieved, and then pumped storage is combined so as to carry out combined scheduling; modeling is performed so as to introduce a multi-target function of maximum wind-solar-battery energy output and a minimum generalized load fluctuation; in thermal power economic cost, set start and stop cost is considered; and an improved particle swarm algorithm is used to solve a generalized load fluctuation curve and set scheduling output. In the invention, flexible pumped storage energy or a scheduling power supply is used to restrain wind power and photovoltaic output fluctuations; a problem that there is no photovoltaic output at night so that a wind-power reverse peak adjusting characteristic is high is solved; possibilities of the wind abandoning and light abandoning are reduced; smooth wind-solar output is achieved and the peak-load shifting is realized; set starting up and shutdown frequencies are reduced; and economic benefits of the system are increased and power grid reliability is guaranteed.

Description

technical field [0001] The invention relates to an integrated scheduling strategy based on wind, water, fire and multi-energy complementarity, which realizes the function of optimal economic benefit and reliability. Background technique [0002] In recent years, since the implementation of the "Renewable Energy Law" in my country, photovoltaic power generation, wind power generation, hydropower generation and biomass power generation have received high attention, among which photovoltaic power generation and wind power generation are growing at a rate of more than 40% every year . Independent wind power has anti-peak regulation and intermittent fluctuations, but the output cost is relatively low. The output cost of independent photovoltaic power generation is relatively high, but the stability of power supply is also relatively high. In order to fully accept intermittent energy such as wind and light into the grid, when it is at the peak output, high-efficiency units will b...

AI Technical Summary

Problems solved by technology

Independent wind power has anti-peak regulation and intermittent fluctuations, but the output cost is relatively low

The output cost of independent photovoltaic power generation is relatively high, but the stability of power supply is also relatively high

In order to fully accept intermittent energy such as wind and light into the grid, when it is at the peak output, high-efficiency units will be shut down and high-efficiency units will be turned on, which will increase the economic operation cost of the system; on the other hand, if not If intermittent energy is fully accepted, light and wind will be abandoned, which is in violation of the "Renewable Energy Law"

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