An Optimal Dispatch Method for Pumped Storage Power Station Based on Load Curve Quantification

Abstract

The invention discloses a load curve quantization-based pumped storage power station optimized dispatching method. The method comprises the following steps: arranging a set repairing plan; collecting load predetermination data of a power system; establishing a state transition equation of a pumped storage power station and a constraint condition thereof; establishing a load curve quantization index of a thermal power generating set; and using load curve quantization index minimization of the thermal power generating set as an objective function and carrying out optimized dispatching on the operation of the pumped storage power station by using a dynamic planning method. According to the invention, the fluctuation degree of a load curve carried by a thermal power generating set can be reduced; the power generation load rate can be improved; and the power supply coal consumption of the thermal power generating set can be reduced.

Description

technical field [0001] The invention relates to the technology of a pumped storage power station, in particular to an optimal scheduling method for a pumped storage power station based on load curve quantization. Background technique [0002] The pumped storage power station uses the excess electric energy in the power system to pump the water from the low-elevation reservoir (commonly known as "lower reservoir") to the high-elevation reservoir (commonly known as "upper reservoir") and store it in the form of potential energy. When the system needs electricity, the hydropower station releases water from the upper reservoir to the lower reservoir for power generation. Whether the pumped storage power station is used for frequency regulation, emergency backup or load following, it can provide active power support at a rate that meets the system stability requirements when the grid needs it, so as to maintain the safety and stability of the system operation. In the past ten ye...

AI Technical Summary

Problems solved by technology

At present, the starting point or objective function of optimal dispatching of pumped storage power plants is the most economical system operation, the lowest power generation operation cost and other economic indicators. The economic evaluation is carried out through the set fuel cost and power loss loss. The difference will affect the optimization result to a certain extent, and needs to be further improved

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