Day-ahead power generation plan photovoltaic power generation receiving capability analysis method based on SCED

Abstract

The invention discloses a day-ahead power generation plan photovoltaic power generation receiving capability analysis method based on SCED. The day-ahead power generation plan photovoltaic power generation receiving capability analysis method based on SCED includes the following steps that based on a physical model and an economic model which access a power grid, under the condition that a regular unit booting and shutting scheme is known, an SCED model is set up; photovoltaic power stations in a zone serve as a specific analysis target, an optimized target of the SCED model is set to be maximum photovoltaic power generation total output power and an optimized model of photovoltaic power generation receiving capability analysis is obtained; non-linear factors in the model undergo linearization; the linear programming method is used for solving the model to calculate out an active power curve of receiving photovoltaic generation of a study area, the photovoltaic generation receiving capability of the power grid is obtained and the maximum grid connection power generating capability in an analysis period of all photovoltaic power stations is obtained. The day-ahead power generation plan photovoltaic power generation receiving capability analysis method based on SCED facilitates pre-control on risks generated after the power grid accesses large-scale photovoltaic power generation and improves safety of operation of the power grid.

Description

technical field [0001] The invention belongs to the technical field of power system scheduling automation, and relates to a method for analyzing photovoltaic power generation acceptance capacity of a day-ahead power generation plan based on SCED. Background technique [0002] With the increasingly severe energy crisis and environmental pollution, countries all over the world regard the development and utilization of sustainable clean energy as their future energy development strategy. Among them, solar energy has become a hot spot of social concern due to its unique advantages such as rich resources, small geographical restrictions, and cleanliness. In recent years, solar photovoltaic power generation technology has been developed continuously and rapidly. In 2009, the newly installed capacity of photovoltaic power generation in the world was 7.2GW, and the cumulative installed capacity exceeded 22GW. Photovoltaic power generation is expected to account for 9% of global el...

AI Technical Summary

Problems solved by technology

In the analysis of the photovoltaic power generation capacity of the power grid, the usual processing is from the perspective of photovoltaic power plant planning, considering factors such as operation mode, disturbance mode, and stability criteria, to determine the maximum construction capacity of photovoltaic power plants, that is, the penetration power limit of photovoltaic power generation. Such evaluation methods are not suitable for the field of short-term dispatching operation; there are also some evaluation methods to evaluate the acceptance capacity of photovoltaic power generation from a single perspective, such as peak shaving, etc., and analyze the acceptance capacity of grid photovoltaic power generation by establishing an algebraic model, but it is difficult to guarantee the validity of the analysis results sex and practicality

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