Optimal Scheduling Method for Day-Ahead Peak-shaving Resources Based on Quotation of Thermal Power Units' Peak-shaving Capability

Abstract

The invention discloses a day-ahead peak-shaving resource optimization scheduling method based on thermal power unit peak-shaving ability quotation, including the steps of determining the regional power grid thermal power unit operating parameters; establishing a day-ahead peak-shaving resource optimization scheduling model based on thermal power unit peak-shaving ability quotation; wherein , the operating cost of thermal power units includes power generation cost and peak compensation cost; solve the model, determine and output the optimal target value. Under the premise of the thermal power unit peak regulation compensation mechanism stipulated by the market, the present invention takes into account the influence of the unit’s power generation cost and peak regulation compensation cost on the unit’s power generation plan, and takes the lowest total power generation cost and peak regulation compensation cost of the unit as the optimization goal. Determine the day-ahead power generation plan and peak-shaving backup plan of the thermal power unit, realize the overall coordination and formulation of the unit’s peak-shaving backup plan and power generation plan, and can effectively connect the peak-shaving auxiliary service market and the electric energy market, minimize the peak-shaving cost of the system, and improve social efficiency. Overall benefit, promote new energy consumption.

Description

technical field [0001] The invention relates to the technical field of electric power system analysis, in particular to a method for optimal dispatching of peak-shaving resources ahead of time based on quotations for peak-shaving capacity of thermal power units. Background technique [0002] In recent years, vigorously developing clean energy such as hydropower, wind power and photovoltaics has become an important reform measure of the national energy planning. As of the end of 2018, my country's total installed capacity of hydropower, wind power, and photovoltaics and new installed capacity ranked first in the world, and the development of clean energy has attracted worldwide attention. However, due to the intermittent, fluctuating and anti-peak-shaving characteristics of wind power, photovoltaic and other new energy power generation, the uncertainty of power system operation increases significantly during large-scale grid connection, which not only brings new challenges to...

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Problems solved by technology

Considering that my country's current peak-shaving market and electric energy market are still two independent markets, this method cannot be directly applied to my country's power system dispatching operation. In my country's traditional economic dispatching model, it does not take into account Therefore, when considering the output constraints of the unit, the impact of the unit’s peak-shaving reserve is not considered. For example, if a thermal power unit provides peak-shaving service quotations that are too high, when formulating the power generation plan of the unit , we should try to make the unit’s minimum power generation plan higher than the unit’s paid peak-shaving compensation benchmark. Existing research is difficult to make an overall consideration of the unit’s peak-shaving backup plan and power generation plan, and it is also difficult to guarantee the system’s peak-shaving auxiliary costs and The total cost of electric energy is the least, which is not conducive to improving the overall social benefits

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