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Active real-time scheduling method for large power grid based on model predictive control

A technology of model predictive control and real-time scheduling, applied in the direction of single-network parallel feeding arrangement, etc., can solve problems such as poor effect and dynamic characteristics change

Active Publication Date: 2013-04-03
ELECTRIC POWER SCHEDULING CONTROL CENT OF GUIZHOU POWER GRID CO LTD +1
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Problems solved by technology

[0005] The purpose of the present invention is to propose a method for real-time dispatching of active power in large power grids based on model predictive control, to improve the problems of traditional real-time dispatching of active power, which deal with changes in dynamic characteristics and complex systems with uncertain factors, and to further reduce the risk of power grid operation. Improve operating economy

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  • Active real-time scheduling method for large power grid based on model predictive control
  • Active real-time scheduling method for large power grid based on model predictive control
  • Active real-time scheduling method for large power grid based on model predictive control

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[0025] The method for real-time dispatching of large power grid active power based on model predictive control proposed by the present invention has a flow chart as shown in figure 1 shown, including the following steps:

[0026] (1) At the current sampling time t 0 , the ultra-short-term load forecasting model calculates the load output of the large power grid in the future setting period according to the historical information of the large power grid;

[0027] In this step, the load forecasting model predicts its future output based on the historical information and future input of the object. Predictive models have the function of showing the future dynamic behavior of the system. In this way, the prediction model can be used to provide prior knowledge for the optimization of MPC, so as to decide which control input to use, so that the output change of the system in the future will meet the expected goal.

[0028] (2) Set a power generation control target value for the l...

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Abstract

The invention relates to an active real-time scheduling method for a large power grid based on model predictive control, and belongs to the technical field of electric power system operation and control. Firstly, the load force of a future optimization period is predicted by a load prediction model, prior knowledge is provided for optimizing an MPC (multimedia personal computer), an active real-time scheduling model based on a model predictive control strategy is built, and the optimal force result sequence of a real-time scheduling unit is obtained by a rolling optimized real-time scheduling solving strategy. By introducing model predictive theory in the active real-time scheduling process, the problems of dynamic characteristic change of traditional active real-time scheduling and poor effects of a complicated system with uncertain factors can be effectively solved, and the influence of load prediction deviation and other deviation is eliminated in advance. By the method, the operational risk of the power grid is reduced, and operational economy of the power grid is improved.

Description

technical field [0001] The invention relates to a method for real-time dispatching of active power in a large power grid based on model predictive control, and belongs to the technical field of power system operation and control. Background technique [0002] Real-time dispatching is one of the most important parts in the intelligent dispatching system of power grid. When implementing the normal dispatching plan of the power system, it is necessary to face uncertain factors such as the operating point is close to the edge of the safety zone, the unit does not effectively track the plan, and the capacity of the automatic generation control (AGC) unit is insufficient. Therefore, the unit with good performance and good execution plan in the system is taken as the real-time scheduling unit, and the output of the unit is adjusted in advance through ultra-short-term power generation demand forecasting to eliminate these uncertain factors. Therefore, real-time dispatch is a kind o...

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Application Information

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IPC IPC(8): H02J3/48
Inventor 吴文传张伯明刘振铭孙宏斌郭庆来王宁陈建华单克王巍黄文伟陈恩黔肖倩宏
Owner ELECTRIC POWER SCHEDULING CONTROL CENT OF GUIZHOU POWER GRID CO LTD
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