Failure calculation method for full consumption of renewable energy in integrated energy system

Abstract

The invention relates to a failure calculation method for full consumption of renewable energy in an integrated energy system, which belongs to the technical field of planning and operation of integrated energy systems. The method considers the influence of uncertainty and correlation on intermittent renewable energy consumption. An accurate integrated energy system uncertainty mathematical model is built. The upper limit of consumption of an external grid is considered as an uncertain stochastic variable, which makes the calculation result closer to reality. By using a design point search method based on an iterative algorithm (Hasofer-Lind-Rackwitz-Fiessler) recommended by the Joint Committee on Structural Safety, the failure probability that the external grid cannot consume all intermittent renewable energy can be calculated accurately. The failure probability index, combined with other important economic and environmental indexes, can help system operators to make more reasonable planning schemes and operation strategies based on the current situation of integrated energy systems, heat and power cogeneration systems and power systems.

Description

technical field [0001] The invention relates to a failure calculation method for all renewable energy consumption in an integrated energy system, and belongs to the technical field of integrated energy system operation and planning. Background technique [0002] With the rapid development of intermittent renewable energy, the power system is facing more and more uncertain factors. Although my country has continuously issued policies to support the consumption of new energy in recent years, the data released by the National Energy Administration recently showed that the problem of wind curtailment has not only failed to be effectively resolved, but has become more and more serious with the increase in installed capacity, becoming an obstacle to my country's new energy. A persistent disease in the healthy development of the industry. During the 13th Five-Year Plan period, the installed capacity of wind power generation in my country will further expand, and the consumption of ...

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Problems solved by technology

[0003] The purpose of the present invention is to propose a failure calculation method for the full consumption of renewable energy in an integrated energy system, so as to overcome the shortcomings of the existing stochastic simulation method for calculating the failure probability, and meet the requirements of wind power with a high proportion of random fluctuations and uncertain loads. The analysis, operation and planning requirements of the integrated energy system

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