A method to minimize the operating cost of agricultural irrigation pump load considering the reserve income

Abstract

The invention relates to the technical field of electric power system dispatching, and is a method for minimizing the operating cost of agricultural irrigation pump loads in consideration of reserve income, including constraints based on the quantitative relationship between the discharge pump load and the pump flow rate, the constraints on the upper reserve capacity and the lower reserve capacity of the water pump, Constraints on water pump flow rate and interval constraints on daily irrigation net water volume, constructing a model for minimizing operating costs of agricultural irrigation pump loads considering backup income. The invention proposes a calculation method for the maximum spare capacity of the agricultural irrigation pump load, utilizes the flexibility of electricity consumption of the agricultural irrigation load, comprehensively considers the electricity expense, and obtains income by participating in the power system operation backup, thereby reducing the energy cost of agricultural irrigation.

Description

technical field [0001] The invention relates to the technical field of power system scheduling, and relates to a method for minimizing the load operation cost of an agricultural irrigation pump considering the standby income. Background technique [0002] The existing power system mainly uses the backup resources on the power generation side to achieve real-time power balance, which is generally achieved by dispatching traditional generating units, such as coal power, gas power, and hydropower. In my country's coal-based power supply structure, coal-fired power units are limited by slow start-up and minimum technical output constraints; if the coal-fired power generation is too large, it will cause serious problems of abandoning wind and light, causing a great deal of clean energy. Waste; if the coal-fired power is insufficient, it will be too late to start or the adjustment rate will be insufficient, resulting in the adjustment unable to keep up with the rapid fluctuations o...

AI Technical Summary

Problems solved by technology

In my country's coal-based power supply structure, coal-fired power units have the limitations of slow start-up and minimum technical output constraints; if too much coal-fired power is started up, there will be a serious problem of abandoning wind and light, which will cause a huge impact on clean energy. Waste; if the coal-fired power generation capacity is insufficient, the adjustment will not be able to keep up with the rapid fluctuations in renewable energy and load due to the lack of time to start up or insufficient adjustment speed, resulting in the risk of power outages

Therefore, the conventional reserve resources are increasingly unable to adapt to the development of the new situation, and it is necessary to fully tap other resources for rapid power adjustment, such as playing the role of adjustable resources on the demand side

[0003] Water conservancy plays an important role in the development of agriculture. The irrigation and drainage load is also the largest load in agricultural production. However, the agricultural irrigation load has been extensively managed for a long time. Especially in summer, the agricultural irrigation load is superimposed on the air conditioning load, which further increases the peak load of the power grid. , affecting the safe and economical operation of the power grid

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