Automatic power generation control method

Abstract

The invention discloses an automatic power generation control method. The automatic power generation control method comprises that: each power grid area j determines a current load variation quantity, a frequency deviation value of a power grid area i and a frequency deviation value of a power grid area k in each preset control cycle in the area, wherein the power grid area i is each area of the power grid area j that power flows to, and the power grid area k is each power grid area that the power of the power grid area j flows to; the power grid area j determines a power output control order and a control evaluation parameter of the local area in a current control cycle according to the load variation quantity and the frequency deviation value and according to a principle that a sum of system regulation expenditure and frequency deviation punishment is minimum; power generation control in a local area is performed according to the power output control order and frequency stability is obtained according to a control evaluation parameter. The automatic power generation control method can effectively realize stable frequency and low cost in the electric power system.

Description

technical field [0001] The invention relates to power system frequency control technology, in particular to an automatic generation control (AGC) method. Background technique [0002] In an interconnected power system, each regional grid maintains frequency stability within the system through automatic generation control (AGC). Generally speaking, frequency regulation will generate costs, so the regional power grid always wants to minimize its regulation costs, and generally requires optimal economic efficiency when performing automatic power generation control. Economic optimization is achieved when regions cooperate with each other. [0003] The current automatic power generation control method adopts centralized control, that is, the control center collects real-time status information of each regional power grid, and performs unified decision-making control based on this. There are following problems in this method: [0004] 1. Due to the increase of uncertainty after...

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Problems solved by technology

[0004] 1. Due to the increase of uncertainty after wind power and other renewable energy sources are connected, the state information of each region changes rapidly. In this way, the state information mastered by the control center is easily outdated and inconsistent with the actual situation, which will reduce the Effectiveness of centralized frequency control

[0005] 2. In practical applications, the number of regional power grids is huge, and the transmission and processing of a large amount of state information will also increase the resource overhead cost of centralized control, so it cannot meet the actual needs of minimizing the adjustment cost

[0006] It can be seen that the existing automatic power generation control methods have problems such as poor regulation performance and high regulation costs.

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