Method for calculating reserve capacity of power system

Abstract

The invention belongs to the technical field of operation scheduling of power systems, and particularly relates to a power system reserve capacity calculation method. According to the method, the standby capacity for ensuring safe operation of the power system is calculated by considering the standby requirements of the power system in three aspects of accident standby, load standby and renewable energy fluctuation standby. According to the invention, probability modeling is carried out on the uncertainty of renewable energy sources, and the accuracy of reserve capacity calculation is ensured. According to the method for calculating the reserve capacity of the electric power system, the output characteristics of renewable energy sources such as wind power / photovoltaic energy are accurately described through Gaussian mixture distribution, the reserve demand caused by fluctuation of the renewable energy sources is accurately calculated on the basis of the distribution, and then the total reserve capacity of the electric power system is calculated. The method disclosed by the invention can be applied to calculation of the reserve capacity of the large-scale renewable energy grid-connected power system.

Description

technical field [0001] The application belongs to the technical field of operation dispatching of electric power systems, and in particular relates to a method for calculating reserve capacity of electric power systems. Background technique [0002] With the large-scale access of renewable energy such as wind power and photovoltaics to the grid, its volatility and randomness pose challenges to the safe operation of the power system, and the power system needs to reserve reserve capacity to ensure safety. At present, the calculation of the reserve capacity of the power system depends on manual experience, which is blind and arbitrary. It does not fully consider the probabilistic characteristics of renewable energy, and cannot adapt to the development trend of large-scale access to renewable energy. [0003] To sum up, the calculation of reserve capacity taking into account the uncertainty of renewable energy output is a major problem affecting the security of the power system...

AI Technical Summary

Problems solved by technology

At present, the calculation of the reserve capacity of the power system depends on manual experience, which is blind and arbitrary. It does not fully consider the probabilistic characteristics of renewable energy, and cannot adapt to the development trend of large-scale access to renewable energy.

[0003] To sum up, the calculation of reserve capacity that takes into account the uncertainty of renewable energy output is a major problem that affects the security of the power system after the integration of renewable energy.

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