A method for optimal configuration of grid structure in AC/DC hybrid power distribution system
A technology of AC-DC hybrid and grid structure, which is applied in the field of optimal configuration of AC-DC hybrid power distribution system grid structure, and can solve problems such as changing system characteristics
Inactive Publication Date: 2020-09-22
SICHUAN UNIV
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[0004] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art, and provide a method for optimally configuring the grid structure of an AC / DC hybrid power distribution system, so as to solve the problem of the application of existing power electronic devices and the massive access of a large number of distributed renewable energy sources Issues that will change the characteristics of the system
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[0061] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.
[0062] According to an embodiment of the present application, refer to figure 2 , is the flowchart of the inventive method, and its detailed steps are as follows:
[0063] S1. Construct a double-layer optimization model of the grid structure of the AC-DC hybrid system including the steady-state model of the power electronic transformer;
[0064] Firstly, the grid structure configuration of the AC-DC hybrid system is mathe...
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The invention discloses a method for optimizing the grid structure of an AC-DC hybrid power distribution system, including S1, constructing a double-layer optimization model of the grid structure of the AC-DC hybrid system; S2, constructing AC and DC load requirements, charging pile charging requirements, and distribution Probabilistic model of photovoltaic and wind turbine output; S3. Generate feasible grid structure configuration scheme; S4. Set benchmark operation mode of power electronic transformer; S5. Use Monte Carlo method to simulate and generate the optimal power flow sub-optimization problem under the operation scenario, Until the stop condition of Monte Carlo simulation is satisfied; S6. According to the current sub-optimization termination condition, if it is satisfied, then enter step S7; if not, modify the power electronic transformer port control mode, and return to step S5; S7, calculate the current The total cost of investment, construction and operation of the scheme is used to check the main optimization objective. If the objective requirements are met, the description matrix is output. If not, the grid configuration scheme is updated, and return to step S4.
Description
technical field [0001] The invention belongs to the technical field of electric power system planning and investment decision-making optimization, and in particular relates to a method for optimizing configuration of grid structure of an AC / DC hybrid power distribution system. Background technique [0002] In recent years, the rapid growth of new loads such as renewable energy, energy storage systems, and electric vehicles has increased the demand for smart energy management in distribution networks: on the one hand, more and more distributed renewable energy (Distributed Energy Resource, DER) Started to connect to the system through the distribution network or micro-grid; on the other hand, new elements with strong user interaction such as active response loads and electric vehicles are also continuously connected to the distribution network. The traditional AC power distribution system is due to the topology and Due to the limitation of control methods, it is impossible to...
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IPC IPC(8): H02J3/00H02J3/38H02J5/00
CPCH02J3/00H02J3/382H02J3/383H02J3/386H02J5/00H02J2203/20Y02E10/56Y02E10/76
Inventor 刘友波尹航刘向龙刘俊勇任文诗李驰宇
Owner SICHUAN UNIV