Multi-source coordinated scheduling and control domain partitioning method for operation of new energy power system

Abstract

The invention discloses a multi-source coordinated scheduling and control domain partitioning method for the operation of a new energy power system. According to the method, an important reference basis for a unit combination arrangement is a daily load prediction curve, and the curve has significant crests and troughs. In a crest period, output of the unit needs to be increased; in a trough period, output of the system needs to be decreased, and energy storage equipment is used; in the lowest trough, that is, a cusp trough period, because of the limitation of unit output reducing degree and energy storage equipment capacity, when total output is still larger than a load level in the state of minimum unit output and energy storage equipment full load, the system needs to abandon nuclear energy, abandon wind energy, or even abandon luminous energy to ensure the stability of the frequency. According to the multi-source coordinated scheduling and control domain partitioning method for theoperation of the new energy power system, the operating states of wind power, energy storage and thermal power multi-source systems are divided into three states of normal domain, abnormal domain andemergent domain. The three state domains have different characteristics and are suitable for different scheduling and control methods, a specific value of state domain division updated at intervals of fifteen minutes can be obtained, three sets of data is output for nearly thirty minutes, and the scheduling and control of the power grid domains are facilitated.

Description

technical field [0001] The invention belongs to the field of electrical engineering active power scheduling control, and the invention relates to a multi-source coordinated control domain division method. Background technique [0002] The grid’s power generation scheduling of units is based on the prediction results of the daily load curve, focusing on the two parameters of the dispatchable unit capacity and the output range of each unit to optimize the combination of units; closed-loop control is often used for power generation control, aiming at reducing the difference between actual load and predicted load The combination of grid frequency fluctuation, dispatching and control is called regulation. [0003] An important reference for unit arrangement is the daily load forecast curve, which has significant peaks and troughs. During the peak period, it is necessary to increase the output of the unit; during the valley period, it is necessary to reduce the output of the syst...

AI Technical Summary

Problems solved by technology

[0004] At present, there is no literature or product that specifically divides the three states so that they can be further divided into states for scheduling and control.

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