Design method of multi-energy complementary system based on multi-target optimization

Abstract

The invention discloses a design method of a multi-energy complementary system based on multi-target optimization. The method comprises the steps of according to the resource endowment of wind power and photoelectric systems, obtaining installed capacity thereof, establishing the relationship between the output power and the device capacity and the comprehensive output power according to a wind power and photoelectricity characteristic model, stabilizing fluctuation of a photoelectric and wind power system by using a thermal power system and an energy storage system, obtaining the overall output power of a comprehensive energy system, setting fluctuation constraints, obtaining the relationship among the configuration capacity of each system, the system power and the fluctuation ratio, taking minimum fluctuation as a target, establishing the relation between income investment and carbon emission of the comprehensive energy system, determining the weight coefficient of multiple targets,and calculating the design capacity of each subsystem through a multi-target optimization algorithm. A basis is provided for utilizing wind curtailment and light curtailment electric quantity in the wind power and photoelectricity large-power generation period through the energy storage system and reasonably solving the problem of the comprehensive utilization of energy.

Description

technical field [0001] The invention belongs to the technical field of comprehensive energy large base construction, and in particular relates to a design method of a multi-energy complementary system based on multi-objective optimization. Background technique [0002] After the 21st century, the energy crisis and environmental pollution have become the focus of increasing human attention, which has prompted the large-scale development and utilization of wind power, photovoltaic and other renewable new energy sources to become an important research direction. In order to effectively alleviate my country's huge demand for energy and establish an energy base, large-scale centralized development of wind power and photovoltaics will become the future development trend. However, the design and development of large-scale energy bases based on new energy sources urgently need to solve two major problems. First, due to the randomness and intermittent nature of renewable resources s...

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Problems solved by technology

First, due to the randomness and intermittent nature of renewable resources such as wind and light, the output power fluctuates greatly. In the case of high penetration rate, the impact on the power grid is relatively large, so a large-capacity energy storage system must be equipped; Second, the planning and operation optimization of the integrated energy system involves multiple stakeholders, and there are various coupling relationships among them, making it difficult to determine the return on investment

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