Virtual power plant optimization scheduling modeling method based on CVaR

Abstract

The invention provides a virtual power plant (VPP) optimization scheduling modeling method based on a conditional risk value (CVaR). The risk theory is utilized to discuss a VPP scheduling optimization problem, the VPP contains a large number of renewable energy such as wind and light, the output is different from conventional energy, strong gap and volatility exist, a VPP scheduling optimizationproblem is an uncertainty problem, so VPP scheduling is made to face a possible risk, the CVaR theory can be utilized to accurately measure the risk of the VPP in scheduling operation, and thereby economical efficiency and the risk are balanced. In a target function of traditional VPP scheduling operation, a CVaR item for measuring the risk is added, the target function of a mathematical model ofthe problem is made to not only consider minimum total cost, but also the least risk, the CVaR is multiplied by a weight coefficient and is then added to the target function, and a multi-target problem is converted into a single-target problem for solution. The method is advantaged in that operators with different risk preferences are further graded, and instructive solutions are provided for theVPP operators with the different risk preferences.

Description

technical field [0001] The invention belongs to the technical field of power system operation and scheduling, in particular to a CVaR-based virtual power plant optimization scheduling modeling method. Background technique [0002] The 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 and photovoltaic power generation. However, renewable energy power generation is highly random and uncontrollable, and the separate grid connection of wind power and photovoltaics 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 (virtual power plant, VPP) [3-4]. [0003] Through the organic aggregation of various distributed generators (Distributed Generator, DG), controllable load (dispatchable load, DL) and distributed ene...

AI Technical Summary

Problems solved by technology

[0004] However, during the scheduling operation of virtual power plants, due to the intermittent and random nature of the distributed power generation, the revenue of VPP operators is fluctuating. How to reasonably allocate the power generation of each distributed power generation will not only affect the income and cost, etc. Economic issues also have a profound impact on whether resources can be fully utilized, environmental issues, etc.

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