A risk assessment method for wind-solar-storage combined power generation system

Abstract

The invention relates to an evaluation method for a risk of a wind power, photovoltaic power generation and energy storage combined power generation system. The evaluation method comprises the following steps: acquiring reliability statistic data of the wind power, photovoltaic power generation and energy storage combined power generation system and calculating reliability parameters of main equipment according to the reliability statistic data; establishing a reliability model, a generated-power model and a load model according to the reliability parameters; acquiring a power time sequence, an operation state time sequence and a load time sequence of the wind power, photovoltaic power generation and energy storage combined power generation system; calculating generating capacity loss risk LOEE, power shortage risk LOLE and system auxiliary service lack loss SSL of the wind power, photovoltaic power generation and energy storage combined power generation system; acquiring comprehensive risk CRV of the wind power, photovoltaic power generation and energy storage combined power generation system according to the generating capacity loss risk LOEE, the power shortage risk LOLE and the system auxiliary service lack loss SSL. According to the method, the risk factors of power generation loss and system auxiliary functions are comprehensively considered.

Description

technical field [0001] The invention belongs to the field of new energy in electric power systems, in particular to a risk assessment method for a wind-solar-storage combined power generation system, which quantifies the risk of the combined power generation system from two aspects of power generation loss and system auxiliary service functions. Background technique [0002] In recent years, energy depletion and environmental pollution have become increasingly serious, and renewable energy has gradually attracted worldwide attention. Wind energy and solar energy are inexhaustible clean energy. As the most mature technology in new energy generation, wind power generation technology has begun large-scale application. The photovoltaic power generation industry using solar energy has also developed rapidly in recent years. [0003] Due to the uncertainty and discontinuity of wind energy and solar energy, the output of wind farms and photovoltaic power plants fluctuates up and do...

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Problems solved by technology

[0004] However, wind energy and solar energy are uncertain, power generation facilities are often switched under different working conditions, coupled with the impact of harsh environments, how to carry out risk assessment on the combined power generation system, and how to maintain the combined power generation system according to the assessment results, become a guarantee An important part of the reliable operation of the system

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