Electric heating system optimal dispatching method considering deep peak regulation of unit

Abstract

The invention belongs to the field of power system dispatching, and particularly relates to an electric heating system optimal dispatching method considering unit deep peak regulation for insufficientsystem peak regulation capacity. The method comprises: firstly, according to a compensation mechanism of a peak regulation auxiliary service market, constructing an income and cost model of thermal power generating units participating in deep peak regulation; secondly, with the minimum total scheduling cost of unit coal burning, peak shaving additional cost and starting and stopping cost as the target, establishing a thermoelectric combined optimization dispatching model comprising a thermoelectric unit, a thermal power unit, wind power and a heat storage device; and using the matlab and theyamlip for combined solution, so that the economy of the scheduling scheme when the peak regulation capacity of the electric heating system is insufficient is analyzed from the wind power plant, the deep peak regulation unit and the social level. According to the method, the deep peak regulation capacity, the deep peak regulation compensation income and the additional cost of the unit are considered, and the peak regulation unit model is applied to the electric heating system containing wind power, so that the peak regulation potential of the system is improved, and the consumption of new energy sources such as wind power is effectively promoted.

Description

technical field [0001] The invention belongs to the field of electric power systems, and in particular relates to an optimal scheduling method for an electric heating system based on deep peak regulation of a unit. Background technique [0002] Facing the depletion of fossil energy, renewable energy has developed rapidly: by the end of 2018, the installed capacity of renewable energy in my country had reached 728 million kilowatts, and the power generation was 1.87 trillion kwh, accounting for 38.3% of the total installed capacity and power generation respectively. 26.7%. The large-scale development of renewable energy has increased the uncertainty of power system operation, and the system's flexibility and adjustment capacity is insufficient, and the power system will face greater pressure for peak regulation. Especially during the heating period in northern my country in winter, the thermal power unit is constrained by the thermal load, which makes the peak regulation capa...

AI Technical Summary

Problems solved by technology

From the perspective of thermoelectric decoupling, although it can improve the peak-shaving capacity of the system during the heating period, it cannot deal with the problem of insufficient peak-shaving capacity of the system due to the uncertainty of new energy output during the non-heating period.

Xu Chenbo, Li Yuan, Sun Yikai and others proposed a power system flexibility optimization scheduling method considering deep peak regulation and demand response (patent number: CN102018001324850), considering the deep peak regulation capability of the unit and the demand response resource adjustment capability of the load side , in the day-ahead dispatching stage, the peak-shaving capability of the unit is improved by optimizing the output arrangement plan of the unit, but the additional cost of deep peak-shaving and the compensation mechanism of the ancillary service market are not considered, and the peak-shaving model constructed needs to be further improved

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