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Stochastic production simulation method based on pumped storage power station correction time sequence load curve

A pumped storage power station and load curve technology, which is applied in the direction of circuit devices, AC network circuits, AC network load balancing, etc., can solve the problem that affects the accuracy of calculation results, and cannot consider the output timing characteristics of new energy power stations and pumped storage power stations, etc. question

Active Publication Date: 2018-04-13
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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Problems solved by technology

[0004] For large-scale new energy grid-connected systems with pumped storage power stations, the main deficiency of traditional stochastic production simulation is that it cannot consider the timing characteristics of the output of new energy power stations and pumped storage power stations, which affects the accuracy of calculation results

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  • Stochastic production simulation method based on pumped storage power station correction time sequence load curve

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Embodiment Construction

[0087] The invention provides a stochastic production simulation method based on the corrected time series load curve of the pumped storage power station. Firstly, the evaluation index of new energy output is constructed according to the historical data and a suitable output scene is selected; The minimum is the goal, and the mid- and long-term optimal dispatching model of the pumped storage power station is constructed; finally, the random fluctuation of new energy power generation and the timing characteristics of the output of the pumped storage power station are reasonably considered by using the method of timing load curve correction, which effectively solves the problem of traditional stochastic production. The simulation method does not consider the significant disadvantages of the timing output characteristics of new energy and pumped storage power plants. A practical method based on the timing load correction method to improve stochastic production simulation is given, ...

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Abstract

The invention discloses a stochastic production simulation method based on a pumped storage power station correction time sequence load curve. According to the method, according to historical data, anevaluation index for the new energy output is constructed, and an appropriate output scene is selected; a medium and long term optimization scheduling model of a pumped storage power station is constructed by taking the lowest volatility of an unbalanced power curve as a target; and by adopting a time sequence load curve correction method, the stochastic volatility of new energy power generationand the output time sequence characteristic of the pumped storage power station are reasonably considered, and the significant defect that in a traditional stochastic production simulation method, consideration on the new energy and the output time sequence characteristic of the pumped storage power station is insufficient is effectively solved. The practical stochastic production simulation method improved on the basis of the time sequence load correction method is particularly suitable for medium and long term reliability analysis and economy evaluation of an electric power system containinga high-proportion renewable energy source power station and the pumped storage power station.

Description

technical field [0001] The invention belongs to the technical field of power supply planning, and in particular relates to a stochastic production simulation method based on corrected sequential load curves of a pumped storage power station, which is used for evaluating the reliability and economy of power system operation. Background technique [0002] With the integration of a large proportion of renewable energy into the grid, the randomness and volatility of its output have become the key factors affecting the reliability of system operation. It is necessary to seek economical and reasonable energy storage technology to improve the reliability level of system operation. As one of the most widely used energy storage technologies at present, pumped storage power station can not only play the role of peak shaving and valley filling, but also can improve the flexibility of system operation, provide backup capacity for the system, and improve system operation level of reliabi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28
CPCH02J3/28H02J2203/20
Inventor 周保荣刘树桦卢斯煜曹晓宇赵文猛王建学
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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