A demand response strategy formulation method considering the ramp rate limit of thermal power units

Abstract

A demand response strategy formulation method considering the thermal power unit ramp rate limit, used in high photovoltaic penetration power system, the method first calculates the equivalent slope of the load curve in a high photovoltaic penetration area grid, and then load curve etc. The efficiency slope is compared with the limit value of the thermal power unit’s ramp rate, and corresponding demand response strategies are proposed according to different comparison results. The strategies include dynamic factor adjustment method and advanced adjustment method. Finally, it is verified that the use of the above demand response strategy can significantly reduce the peak value of the load curve. , and the equivalent slope of the load curve falls below the limit value of the climbing rate of thermal power units, effectively coping with the large-scale power imbalance problem that may be caused by the rapid decline of photovoltaic power generation, which is meaningful for the safe and stable operation of the power system.

Description

Technical field[0001]The invention belongs to the field of new energy consumption, and specifically relates to a demand response strategy formulation method in a high photovoltaic penetration power system that takes into account the limitation of the ramp rate of thermal power units.Background technique[0002]With the popularity of photovoltaic power generation, problems such as its strong volatility and the great influence of weather factors such as day and night, overcast and sunny have gradually become prominent. California, the United States, has abundant solar resources, and photovoltaic power generation has repeatedly set a record of power generation, but it is facing the problem that thermal power units cannot meet the power balance due to the limitation of the ramp rate after the reduction of photovoltaic power. In the high-penetration photovoltaic network, the photovoltaic power generation capacity is high at noon, which is sufficient to meet most of the load demand and redu...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a demand response strategy formulation method considering the limit of thermal power unit climbing rate, and solves the large-scale power imbalance problem that may be caused by the sudden drop of photovoltaic power generation in a power system with high photovoltaic penetration rate

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