A method for automatic generation control of power system based on group control

Abstract

A group-control-based automatic generation control (AGC) method for a power system, comprising: dividing power plant controllers (PLCs) within a control area into a plurality of groups, each group comprising a plurality of PLCs, the groups being set to have different adjustment priorities; when the power grid needs adjustment, considering the reserve adjustment power of a PLC that is executing a command, calculating the total adjustment power of the area; according to the total adjustment power of the area, the adjustment priorities of the PLC groups and the adjustment margin, selecting a PLC group for executing the adjustment; allocating, according to a corresponding adjustment principle, the total adjustment power of the area into the PLCs in the PLC group, and calculating the PLC target powers; and if the total adjustment power of the area is not completely allocated, selecting the next PLC group that has priority, and continuing the allocation until the allocation is completed. Said method is able to efficiently reduce the total adjustment times of the PLCs within a control area, improving the rationality and economy of AGC control.

Description

technical field [0001] The invention belongs to the technical field of automatic generation control (AGC, Automatic Generation Control) of electric power system, and specifically relates to an automatic generation control method of electric power system based on group control. Background technique [0002] AGC aims to meet the real-time balance of power supply and demand under the premise of realizing high-quality electric energy. Its fundamental task is to achieve the following goals: 1) maintain the grid frequency within the allowable error range, and the cumulative frequency error is within the limit value; 2) control The net exchange power of the interconnected grid operates according to the planned value, and the exchanged electric energy is within the planned limit; 3) Under the condition of satisfying the grid security constraints, grid frequency and external net exchange power plan, coordinate and participate in the AGC power plant output according to the optimal econ...

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Problems solved by technology

[0004] The purpose of the present invention is: the present invention aims at the problems that when the number of power plant controller PLCs in the control area is large, the AGC directly controlling the power plant controller PLCs will lead to a large number of power plant controller PLCs participating in the adjustment, frequent adjustments, and manual intervention by dispatchers. A power system automatic power generation control method based on grouping control. The power plant controllers PLC in the control area are grouped, and the automatic power generation control AGC performs power generation control according to the grouping of the power plant controller PLCs, so as to realize the real-time balance of active power generation and load of the power grid, thereby Effectively reduce the total adjustment times of the power plant controller PLC in the control area, reduce the workload of manual intervention of dispatchers, and improve the rationality and economy of AGC control

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