A production and operation method of a power system

Abstract

The invention relates to a production running method of a power system. The production running method comprises the following contents of 1) respectively acquiring a day-ahead forecast load curve P<load[1*n]> of the power system, a day-ahead forecast daily output curve P<outp, NER[1*n]> of renewable power and day-ahead forecast daily output curves P<outp, oth[1*n]> of other types of power stations except a thermal power station, a pumped storage power station and the renewable power if daily data acquisition frequency of the power system is n; 2) calculating to obtain a daily net load curve P<load, net[1*n]> which is required to be borne by the thermal power station and the pumped storage power station; 3) calculating to obtain starting capacity required by a thermal power generation unit; 4) carrying out starting arrangement on the thermal power generation unit and further determining minimum output P<outp, thermal, min> of the thermal power generation unit on the basis that the starting capacity P<load, thermal> required by the thermal power generation unit is met; and 5) obtaining an abandoned power curve DeltaP<outp, NER[1*n]> of the renewable power according to the minimum output P<outp, thermal, min> of the thermal power generation unit, and carrying out energy-saving optimization on the daily running mode of the pumped storage power station. By the production running method, the high-proportion renewable power can be absorbed, the peak shaving pressure of the thermal power generation unit is reduced, and the purposes of energy saving and emission reduction are achieved.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a production and operation method of a power system. Background technique [0002] With the development of my country's national economy and the improvement of people's living standards, social electricity consumption continues to increase, and the peak-to-valley difference in power continues to expand, which intensifies the peak-to-valley contradiction of power supply. The installed capacity of thermal power in many power grids in my country accounts for a large proportion. Facing the ever-expanding peak-to-valley difference, deep peak regulation will lead to a reduction in the utilization hours of thermal power plants, a decline in main economic and technical indicators such as plant power consumption rate and coal consumption rate, and temporary inspections and accidents. The increase in the number of occurrences has seriously affected the economic benefits of the power plant. [...

AI Technical Summary

Problems solved by technology

However, in addition to the limitation of terrain conditions, if the pumped storage power station is operated purely to cooperate with the power grid to complete the task of peak regulation and frequency regulation, there will be an energy conversion problem of "pumping water at 4 degrees for power generation at 3 degrees", which will cause energy waste

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