Renewable energy consumption capacity improving method considering thermal power flexibility transformation cost

Abstract

The invention discloses a renewable energy consumption capacity improving method considering thermal power flexibility transformation cost, which comprises the following steps of: determining a unit output parameter according to an operation state and an energy consumption characteristic of a thermal power unit; drawing a thermal power generating unit consumption characteristic diagram according to the value of the unit output parameter, and establishing a thermal power generating unit peak regulation cost function; establishing an operation cost optimization model containing a high-proportionrenewable power system by combining a thermal power generating unit peak regulation cost function and considering constraint conditions and transformation cost to increase new energy consumption andreduce system operation cost; applying deep peak regulation compensation to an operation cost optimization model containing a high-proportion renewable power system; and determining the optimal peak regulation compensation coefficient of the thermal power generating unit by considering renewable energy output. The cost of the thermal power generating unit can be fully considered, the enthusiasm ofthe thermal power plant to participate in flexibility transformation is improved, and meanwhile, the deep peak regulation capacity of the thermal power generating unit is improved to improve the absorption capacity of renewable energy.

Description

technical field [0001] The invention belongs to the technical field of new energy consumption, and more specifically relates to a method for improving the consumption capacity of renewable energy in consideration of the cost of flexible transformation of thermal power. Background technique [0002] With the continuous increase of the proportion of renewable energy in the grid power supply, the problem of abandoning wind and light has been paid more and more attention. Due to the constraints of power balance, it is necessary to reduce the output of thermal power units to increase the consumption of renewable energy during the period of high renewable energy output; and to increase the output of thermal power units to avoid power shortage during the period of insufficient renewable energy output. In order to make better use of renewable energy and improve the energy structure of the power system, it is necessary to carry out flexible transformation of thermal power units to im...

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Problems solved by technology

However, the above studies often do not take into account the cost of flexibility transformation of thermal power units, which will lead to limited enthusiasm for thermal power plants to participate in flexibility transformation; at the same time, there are relatively few studies on how to choose the best compensation method and how to choose the cost means of flexibility transformation of thermal power units. few

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