Virtual power plant double-layer optimization model considering network constraints

Abstract

The invention relates to the technical field of power systems and automation thereof, and particularly relates to a virtual power plant double-layer optimization model considering network constraints.The method comprises the specific steps of establishing an upper-layer virtual power plant profit maximization model, establishing a lower-layer market clearing model considering network constraints,converting the double-layer optimization model into a mathematical programming model with balance constraints, and converting the mathematical programming model with the balance constraints into a mixed integer programming model. In order to overcome the defect that line transmission power constraint is not considered in current related research, internal optimization of the virtual power plant and interaction with a market operator and other conventional units are fully considered, a market bidding optimization model in which the virtual power plant participates is established, an optimization bidding strategy is generated under the condition that line power transmission is blocked, the superiority of the bidding strategy is embodied, the profit of the virtual power plant is improved, and the model is close to the practical situation. Scientific theoretical support is provided for the virtual power plant to effectively participate in the power market in future.

Description

technical field [0001] The invention relates to the technical field of electric power systems and automation thereof, in particular to a double-layer optimization model of a virtual power plant considering network constraints. Background technique [0002] The virtual power plant can effectively aggregate scattered demand-side resources of different capacity levels. Through coordinated optimization control, it can improve the overall stability of the system and reduce the burden of dispatching. At the same time, it participates in the power market as a whole and has stronger market competitiveness. Considerable income is an effective means to realize the collaborative management of multi-type demand-side resources. In demand response projects, the generalized demand-side resources aggregated by virtual power plants mainly include distributed generation resources, energy storage resources and load resources. Among them, DG resources include two types: one type is intermitten...

AI Technical Summary

Problems solved by technology

In the second type of research, the virtual power plant has a sufficient number of different types of demand-side resources, and its scale is relatively large. Its operating decisions may actually affect the market clearing results. Through the strategic participation of virtual power plant operators in market bidding, operators benefit

However, in the actual power market operation, due to the uneven distribution of power sources and loads and the increasing scale of power generation and power consumption, some transmission lines have transmission congestion, forcing system operators to adjust power generation plans in order to eliminate congestion. , which may affect the virtual power plant revenue

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