A Construction Method of Two-tier Optimization Model of Virtual Power Plant Considering Network Constraints
A technology for virtual power plants and network constraints, which is applied to AC network circuits, electrical components, circuit devices, etc. It can solve the problems of transmission line transmission congestion, affecting market clearing results, and large scale, so as to simplify the modeling process and reduce calculations. Workload, the effect of increasing profits
Active Publication Date: 2021-05-25
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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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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[0101] In order to better understand the present invention, the present invention will be further described below in conjunction with accompanying drawing and specific embodiment:
[0102] Such as figure 1 As shown, a method for constructing a virtual power plant double-layer optimization model considering network constraints, the virtual power plant double-layer optimization model includes an upper layer virtual power plant profit maximization model, and a lower layer market clearing model considering network constraints; specifically includes the following steps :
[0103] S1: Establish the profit maximization model of the upper virtual power plant; the specific steps are as follows:
[0104] S11: If figure 2 As shown, the upper-level problem is that the virtual power plant operator optimizes its bidding power and bidding price according to the historical market clearing information, with the goal of maximizing profit. The specific optimization goal is the revenue minus t...
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The present invention relates to the field of electric power system and its automation technology, and specifically relates to a virtual power plant double-layer optimization model considering network constraints. The bilevel optimization model is transformed into a mathematical programming model with balance constraints, and the mathematical programming model with balance constraints is transformed into a mixed integer programming model. In view of the fact that the current related research does not consider the limitation of line transmission power constraints, the present invention fully considers the internal optimization of virtual power plants and the interaction with market operators and other conventional units, and establishes an optimization model for virtual power plants to participate in market bidding. In the case of line transmission congestion, the optimal bidding strategy is generated, which reflects the superiority of the bidding strategy, which not only improves the profit of the virtual power plant, but also is close to the reality. It provides scientific and theoretical support for virtual power plants to effectively participate in the electricity market in the future.
Description
technical field [0001] The invention relates to the technical field of power systems and automation thereof, in particular to a method for constructing 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 ty...
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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06H02J3/00
CPCG06Q10/04G06Q10/0637G06Q50/06H02J3/00H02J2203/20
Inventor 郭小璇韩帅吴宛潞杨艺云秦丽娟林溪桥孙乐平
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD