Multi-energy complementary method considering user demand characteristics and energy utilization cost

Abstract

The invention discloses a multi-energy complementary method considering user demand characteristics and energy utilization cost, which comprises the following steps: collecting the active output of thermal power units, the generating power of wind power unit, the photovoltaic generating power, the generating power of hydropower units and the load power; drawing a wind power output curve, a photovoltaic power output curve, a hydropower output curve and a load curve; analyzing the energy output in different periods, and determining the time series after combination of different energy accordingto the time series of single energy; establishing an energy-load curve difference index, and determining the similarity between the power output curve after combination of different energy and the load curve; establishing the evaluation indexes of an energy combination mode curve, including a clean energy utilization rate index and an active power deviation index; calculating the cost index of theenergy combination mode curve; and finally, calculating the effect factors of the indexes and the effect factors of different energy combination mode curves, and selecting an optimal multi-energy complementary curve. The problem that large-scale connection of wind power and photovoltaic power into the grid affects the safety and stability of the power system is solved.

Description

technical field [0001] The invention belongs to the field of power consumption, and relates to a multi-energy complementary method considering user demand characteristics and energy utilization cost. Background technique [0002] The increasing depletion of fossil energy has prompted people to pay close attention to renewable energy sources such as solar energy, wind energy, and water energy. However, both wind power generation and photovoltaic power generation have strong randomness, volatility and intermittency, and the large-scale integration of wind power and photovoltaic power grid makes the safe and stable operation of the power system face severe challenges. [0003] However, most of the existing researches focus on the operating characteristics of independent power generation systems such as wind, light and water, or the modeling and simulation, optimal configuration, and control strategies of complementary power generation systems on the energy side. There are rela...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a multi-energy complementary method that considers the characteristics of user needs and energy utilization costs, and solves the problem of randomness, volatility and intermittency in wind power generation and photovoltaic power generation, which cause large-scale wind power and photovoltaic power grids to affect the security of the power system. stability problem

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