Piecewise calculation method for thermal power generating unit peak regulating energy consumption cost

Abstract

The invention relates to a piecewise calculation method for a thermal power generating unit peak regulating energy consumption cost. According to the method, force outputting threshold values at different pitch peak stages of the thermal power generating unit are determined according to a nameplate parameter and a unit performance testing of the thermal power generating unit. The peak regulating process of the thermal and power generating unit is divided into three stages based on a running state and an energy consumption character of the thermal power generating unit. Aiming at differences of the running state at different pitch peak stages of the thermal power generating unit and from a point view of benefits of a heat-engine plant, the cost of loss, the additional cost of environment and the cost of oil investment in the thermal power generating unit are calculated on the basis of considering a coal fired energy consumption character, a piecewise function of the thermal power generating unit pitch peak energy consumption cost is constructed, and further a curve of the thermal power generating unit pitch peak energy consumption cost is obtained. The piecewise calculation method for the thermal power generating unit pitch peak energy consumption cost can provide a basis for economic operations of the heat-engine plant.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a segmental calculation method for peak-shaving energy consumption costs of thermal power units. Background technique [0002] Due to the randomness, intermittentness, and instability of wind energy, large-scale wind power grid integration will increase the peak-to-valley difference of the equivalent load of the system. At present, the existing peak-shaving resources are insufficient, and the new peak-shaving tasks after wind power grid-connected Mainly borne by thermal power units, the peak-shaving capacity of thermal power peak-shaving units can no longer meet the increasing capacity of wind power grid-connected, resulting in large-scale curtailment of wind power in my country's power grid. Against the backdrop of increasingly serious curtailment of wind and power cuts, the society's calls for deep peak regulation of thermal power units are getting louder and louder. Ho...

AI Technical Summary

Problems solved by technology

The current research on energy consumption costs is mostly based on the economic benefits of fuel-saving and deep peak-shaving without oil input and stable combustion by quantitative computer units, but it does not take into account unit loss costs and environmental costs; Energy cost during peak phase

It can be seen that there are few research results on the segmental quantitative calculation of the peak energy consumption cost of thermal power units.

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