Method for improving profit net present value of isolated micro grid comprising new energy

Abstract

The invention provides a method for improving the profit net present value of an isolated micro grid comprising new energy. The method comprises the following steps: collecting basic data; carrying out whole life cycle economic evaluation on the isolated micro grid; determining an optimization variable; obtaining a numerical curve, changing with the optimization variable, of the profit net presentvalue of the isolated micro grid; obtaining a polynomial function of the profit net present value with respect to the optimization variable; and calculating the maximum value of the profit net present value of the isolated micro grid, and thus obtaining a system operation mode capable of significantly improving the profit net present value of the isolated micro grid. The beneficial effects are that the method focuses on improving the profit net present value capable of reflecting the whole life cycle economic benefit of the isolated micro grid, and time scale covered by an optimization objectis more comprehensive; and meanwhile, the optimization object can be selected based on actual operation situations of the isolated micro grid, and the most critical factors affecting the economic benefit of the isolated micro grid are selected through a whole life cycle economic evaluation method, thereby preventing blindness of the optimization process, reducing workload and enabling practical significance of the optimization process to be more clear.

Description

technical field [0001] The invention belongs to the technical field of power system analysis and control, in particular to a method for increasing the profit net present value of an isolated microgrid containing new energy. Background technique [0002] As an important part of the development of Energy Internet, microgrid technology has gained more and more attention and attention. Microgrid plays an irreplaceable important role and has great development potential in the flexible and efficient application of distributed power and new energy, as well as intelligent control operations. Microgrid technology is an important research topic to solve the energy crisis and develop new energy. Microgrid is an autonomous system that can achieve self-control, management and protection. It can be connected to an external grid and run in parallel, or it can be disconnected from other grids and run in isolation. [0003] Isolated microgrids can be used to power remote areas such as isla...

AI Technical Summary

Problems solved by technology

However, this type of method only focuses on improving the staged economic benefit indicators, and lacks the consideration of the overall goal of the isolated microgrid, that is, the full life cycle economic benefit indicator. benefit

Moreover, the intelligent optimization algorithm adopted has a large amount of calculation and strong blindness, and cannot determine the optimization direction according to the actual operation of the microgrid. The actual physical meaning of the optimization process is not obvious and the comprehension is poor.

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