Unit-by-unit month-by-month electric power and energy balance calculation method

Abstract

The invention relates to a unit-by-unit month-by-month electric power and energy balance calculation method. The method includes the steps: calculating system demanded capacity, system demanded energy and a generation load curve, calculating working positions all kinds of power sources sequentially according to priority that the power sources take part in balance, wherein priority levels are a pumped storage unit, a nuclear power unit, a wind generation unit, a hydraulic generation unit, a gas electrical generation unit and a thermal power generation unit from high to low in sequence; calculating the working position and generated energy of the pumped storage unit; calculating the working position and generated energy of the nuclear power unit; calculating the working position and generated energy of the wind generation unit; calculating the working position and generated energy of the hydraulic generation unit; calculating the working position and generated energy of the gas electrical generation unit; performing month-by-month thermal power generation unit maintenance capacity according to the generation load curve and system demanded spinning reserve; calculating the working position and generated energy of the thermal power generation unit according to the generation load curve and the month-by-month thermal power generation unit maintenance capacity. By the method, electric power and energy balance of an electric power system can be calculated quickly, calculated results are accurate, and the method can be widely applied to the field of electric power systems.

Description

technical field [0001] The invention relates to a method for calculating power balance, in particular to a method for calculating power balance by unit and month based on scanning and cutting load curves used in power supply planning and power system design. Background technique [0002] Electric power balance calculation is the primary basis for evaluating the supply and demand situation of the power system, rationally arranging the scale and timing of power supply production, an important basis for determining the scale of power flow between regional power grids, and an important part of the preliminary design work of power engineering. Accurate power balance calculation results can ensure that the power system planning and design is objective and reasonable, can save national infrastructure investment to the greatest extent, and promote the healthy and orderly development of the power industry. [0003] Although the traditional method of estimating power balance by system...

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Problems solved by technology

[0003] Although the traditional method of estimating power balance by system installed capacity is simple and fast, it cannot take into account important factors such as the working mode of various power sources, maintenance arrangements, peak shaving conditions, and obstructions. Therefore, the calculation results have large errors and cannot accurately reflect Plan the power supply and demand situation in the horizontal year, which will lead to tight power supply and demand or the situation of installing a large number of redundant power plants

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