A method for energy coordination and optimization of unit combination
A unit combination and coordinated optimization technology, applied in the direction of single-network parallel feeding arrangement, etc., can solve complex problems, immature unit combination method, uncertain set method, etc.
Active Publication Date: 2017-01-04
STATE GRID CORP OF CHINA +2
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Problems solved by technology
Uncertain set method, an uncertain set represented by a random parameter represents the possible output of wind power, which is convenient for modeling but complicated to solve
[0004] Considering that pumped storage is a fast-adjusting flexible power source, suitable for peak-shaving and valley-filling, multi-energy joint optimization can give full play to the advantages of various energy sources, and the unit combination method for joint optimization of wind power, thermal power, and pumped storage is not yet available. immature
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Embodiment 1
[0070] Such as Figure 1-5 As shown, the inventive energy coordination and optimization unit combination method of this example, the energy includes wind power, thermal power and pumped storage; the method includes the following steps:
[0071] (1) Determine the confidence interval of wind power output;
[0072] (2) Determine the operating parameters and coal consumption characteristics of thermal power units and the operating parameters and operating characteristics of pumped storage units;
[0073] (3) Determining the objective function and constraint conditions for the combined optimization of wind power, thermal power and pumped storage;
[0074] (4) Determine the mixed integer nonlinear programming problem;
[0075] (5) Determine the start-up and shutdown plan of the unit for the next 24 hours.
[0076] The first step: According to the wind power prediction and measured historical data of the wind farm, the error distribution characteristics statistics are carried out,...
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The invention relates to a method for coordinating and optimizing unit combinations of energy sources. The energy sources include wind power, thermal power and pumped storage; the method includes the following steps: determining the confidence interval of wind power output; The operating parameters and operating characteristics of energy generating units; determine the objective function and constraint conditions of wind power, thermal power and pumped storage joint optimization unit combination; determine the mixed integer nonlinear programming problem; determine the start-up and shutdown plan of the unit in the next 24 hours. The method of the invention improves the reliability of the unit combination, ensures that the system has sufficient adjustment ability to balance the power imbalance caused by the fluctuation of wind power during real-time operation, promotes the consumption of wind power, and realizes the coordinated and optimized operation of multiple energy sources, thereby ensuring the smooth operation of the power grid. safety and economy.
Description
Technical field: [0001] The invention relates to an energy coordination and optimization unit combination method, and more particularly relates to a wind power, thermal power and pumped storage energy coordination and optimization unit combination method. Background technique: [0002] Recently, environmental problems and the continuous consumption of non-renewable resources have promoted the development of clean energy such as wind power. The uncertainty of large-scale intermittent energy output poses new challenges to the safe and economic operation of the power grid. In order to ensure the safe operation of the power grid and promote the consumption of intermittent energy, the system needs to have sufficient peak-shaving capability to ensure real-time power balance. Traditional unit combinations mostly focus on the joint optimization of two types of power sources, and many studies are based on forecasted wind power to study the complementary mechanism between multiple sou...
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IPC IPC(8): H02J3/38
Inventor 刘芳潘毅周京阳李强朱泽磊许丹戴赛崔晖董炜蔡帜韩彬张传成丁强李晓磊张加力
Owner STATE GRID CORP OF CHINA