Plant-wide load economic dispatch technology for thermal power generating units based on energy balance

Abstract

The invention discloses a plant-wide load economic dispatch technology for thermal power generating units based on energy balance. The plant-wide load economic dispatch technology comprises the following steps of drawing a curve of a corresponding relation between unit load and power supply standard coal consumption rate by means of mathematical and geometric knowledge according to performance test data of one or more units, fitting out an equation of the curve, calculating the optical load of the units under different total loads according to the equation of the curve and operation modes of different unit commitments with the lowest plant-wide power supply standard coal consumption rate as the target, drawing a single unit load-plant-wide load dispatch curve chart, and making a plant-wide load dispatch scheme. The plant-wide load economic dispatch technology for thermal power generating units based on energy balance combines data and graphs organically by making use of the advanced mathematics, makes hard things simple, can be applied to thermal power enterprises conveniently, guides operation regulation of production fields, and has a huge advantage in market participation.

Description

technical field [0001] The invention relates to an energy balance-based load economic dispatch technology for thermal power units in the whole plant. Background technique [0002] At present, due to changes in the grid power generation structure, the proportion of nuclear power, hydropower, wind power and new energy power generation is increasing, and the load rate of large thermal power units is mostly maintained at about 70%. Participating in power grid peak regulation, the load distribution method among different units has become It is a major factor affecting the economic indicators of the unit, and many scientific researchers have conducted research on this aspect to improve the economy of thermal power unit operation. At present, some textbooks use the load economic scheduling method, that is, the standard coal consumption method of power supply to calculate the slight increase rate method. The process is complicated, the implementation is difficult, and it is not suit...

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Problems solved by technology

At present, some textbooks use the load economic scheduling method, that is, the standard coal consumption method of power supply to calculate the slight increase rate method. The process is complicated, the implementation is difficult, and it is not suitable for the actual situation of production enterprises. In this case, most thermal power enterprises do not carry out unit economic scheduling. Self-adjustment by the operating personnel is not conducive to the development of energy saving and emission reduction work, and the economy of the unit is affected, resulting in a huge waste of energy, and at the same time increases the amount of flue gas emissions and pollutes the environment

[0003] According to the actual situation of the existing units, there are many combinations of unit operation modes, the economic dispatch of unit load is complicated, and the operating personnel have no guiding plan as the basis for operation adjustment, so the adjustment is relatively random, and the load distribution of the units often occurs. The unreasonable phenomenon of reverse adjustment, the standard coal consumption rate of power supply is too high due to the unreasonable load distribution, which wastes a lot of energy, and at the same time increases the flue gas emission and pollutes the environment. In this case, it is urgent to formulate a load economic dispatch plan or system to guide the operating personnel to adjust the load

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