Virtual power plant scheduling optimization method based on Riemann integrals

Abstract

The present invention discloses a virtual power plant scheduling optimization method based on Riemann integrals, in order to solve the optimal scheduling problem when the renewable power output and the load inside the virtual power plant are continuously changed. Considering that an aggregated unit of the virtual power plant comprises gas turbines, wind turbines, pumped storage power stations andloads, for the continuous change of the renewable power output and the load, by using the idea of the Riemann integrals and taking the continuity of variables over time into consideration, a virtual power plant scheduling optimization model based on Riemann integrals is established; and according to the definition of Riemann integrals, by dividing, making sum, and seeking the limit of the virtualpower plant scheduling time intervals, the integral problem is transformed into a limit summation problem, so that the problem can be solved. The method disclosed by the present invention can providean optimal scheduling scheme for a virtual power plant that adapts to the continuous change of the renewable energy output and load for a continuous period of time, provides effective support for thedecision maker to select the optimal strategy, and has certain engineering practical value.

Description

technical field [0001] The invention belongs to the field of electric power system dispatching, and in particular relates to a virtual power plant dispatching optimization method based on Riemann integral. Background technique [0002] Environmental pollution caused by traditional power generation and the concept of sustainable development in today's world have prompted the rapid development of renewable energy including wind power. However, renewable energy power generation is highly random and uncontrollable, and the separate grid connection of renewable energy will affect the safe operation of the power system. In order to overcome the above shortcomings, domestic and foreign scholars put forward the concept of virtual power plant. Through the organic aggregation of renewable energy units, controllable units, loads and energy storage facilities, virtual power plants can not only reduce the impact of intermittent and random renewable energy power generation, but also obta...

AI Technical Summary

Problems solved by technology

However, in reality, renewable energy output and load are a continuously changing function, ignoring the continuity of renewable energy output and load will lead to a disconnect between theory and practice

So far, there is no research on scheduling optimization of virtual power plants considering renewable energy output and load continuity, and the research on this problem has certain practical significance

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