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Power grid all-time multiple optimal scheduling method for improving wind power acceptance capability

A technology for wind power acceptance and optimal scheduling, applied to AC networks with energy trade/energy transmission authority, wind power generation, electrical components, etc., can solve problems that have not yet been seen

Active Publication Date: 2018-05-22
STATE GRID LIAONING ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
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  • Application Information

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  • Power grid all-time multiple optimal scheduling method for improving wind power acceptance capability
  • Power grid all-time multiple optimal scheduling method for improving wind power acceptance capability
  • Power grid all-time multiple optimal scheduling method for improving wind power acceptance capability

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Embodiment Construction

[0070] specific implementation

[0071] A full-time multi-optimized dispatching method of a power grid that improves the capacity of wind power acceptance. The specific optimal dispatching method is as follows:

[0072] Based on wind power forecasting, load forecasting and abandoned wind volume forecasting, on the premise of maximizing wind power output while taking into account the economy, a multi-optimized dispatching model is established to coordinate dispatching of power sources and controllable loads, so that the power grid can accommodate wind power to the greatest extent, among which the dispatched objects Including: thermal power units, hydropower and nuclear power, electric boilers, low grain loads and intermittent loads, the collaborative optimization scheduling model includes:

[0073] Objective function: the minimum amount of abandoned air in the power grid, taking into account economic factors, the objective function is expressed by the following formula:

[00...

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Abstract

The invention discloses a power grid all-time multiple optimal scheduling method for improving the wind power acceptance capability, which belongs to the field of power system optimal scheduling. Themethod comprises the following steps: (1) an evaluation model of a power supply and a load of a power system towards the wind power acceptance capability is built, wherein the evaluation model comprises a heat supply unit, a pumped storage system, an energy storage device, an electric boiler, an intermittent load and the like; (2) according to the efficiency of each above part participating in wind power acceptance and the matching or conflicting relationship among the parts, a cooperative optimal scheduling scheme for the whole power grid is made to improve the wind power acceptance capability; and (3) due to influences of seasonal factors, characteristics of part of power supplies and part of loads are greatly different, the wind power acceptance capabilities in different time periods are also different, seasonal and environmental factor characteristics need to be considered, and an all-time power grid multiple optimal scheduling wind power acceptance method is built. Each sub systemin the power grid is comprehensively and cooperatively stimulated to accept the wind power, a specific optimal scheduling strategy is made for different seasonal factors, and the power grid efficiency is improved.

Description

technical field [0001] The invention belongs to the field of optimal dispatching of electric power systems, and in particular relates to a full-time multi-optimized dispatching method of a power grid for improving wind power acceptance capacity. Background technique [0002] As the global environmental problems become increasingly severe, countries around the world pay more and more attention to the development and utilization of renewable energy; vigorously developing and utilizing wind energy is an effective way to achieve sustainable energy development and improve environmental quality. In recent years, my country's wind power installed capacity has grown rapidly; The output power of wind turbines depends on the natural wind speed, which is random, intermittent and uncontrollable. Large-scale wind power grid integration increases the difficulty of dispatching decisions and deteriorates the power quality of local power grids. What is more serious is that when the power grid ...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/48H02J3/28H02J3/00
CPCH02J3/386H02J3/008H02J3/28H02J3/381H02J3/48H02J2203/20Y02E10/76Y02E70/30
Inventor 葛维春郭海宇李家珏杨俊友崔嘉王顺江张艳军周桂平李铁葛延峰刘劲松王刚
Owner STATE GRID LIAONING ELECTRIC POWER RES INST
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