Optimized operation method of pumped-storage power station and wind power combined system

A pumped storage power station, optimized operation technology, applied in the direction of wind power generation, single grid parallel feeding arrangement, etc., can solve the problems of lack of intermittency, volatility and inaccurate prediction of wind power

Inactive Publication Date: 2015-07-22
TSINGHUA UNIV
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Problems solved by technology

[0003] At present, most of the existing combined optimal operation methods of pumped storage power plants and wind power only incorporate w

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  • Optimized operation method of pumped-storage power station and wind power combined system
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  • Optimized operation method of pumped-storage power station and wind power combined system

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[0066] The optimized operation method of a combined system of pumped storage power station and wind power proposed by the present invention is further described in combination with specific implementation as follows:

[0067] The method of the present invention includes: establishing a unit combination-based optimized operation model of a combined system of pumped storage power station and wind power, the model takes the lowest power generation cost (coal consumption) of the entire grid as the objective function, and the constraint conditions include power balance constraints, spinning reserve constraints, Climbing capacity constraints, unit characteristics constraints, pumped storage power plant constraints, boundary conditions include daily load curve, network loss, power supply parameters; the operation model of the joint system is solved to obtain the operation scheduling command to realize the optimal operation of the joint system. Since the peak and frequency modulation cost...

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Abstract

The invention relates to an optimized operation method of a pumped-storage power station and wind power combined system and belongs to the field of optimized operation of power systems. The method includes: building an optimized operation model of the pumped-storage power station and wind power combined system based on a unit combination, which uses lowest grid generation cost as a target function, constraint conditions of power balance constraint, spinning reserve constraint, climbing ability constraint, unit characteristic constraint and pumped-storage power station constraint, and boundary conditions of a daily load curve, grid loss and power parameters; solving the model to obtain an operation scheduling command to allow optimized operation of the combined system. Wind power intermittence, volatility and prediction inaccuracy are fully considered, and the spinning reverse constraint is corrected to optimize the operation of the combined system; by the use of the method, evident benefits are brought to the pumped-storage power station, in terms of hump modulation and trough stuffing, wind power fluctuation balancing, wind curtailment reduction and system coal consumption reduction.

Description

technical field [0001] The invention belongs to the field of optimized operation of electric power systems, and in particular relates to a combined optimal operation method of a pumped storage power station and wind power. Background technique [0002] In recent years, China's wind power installed capacity has grown rapidly. Wind power has the characteristics of strong randomness, intermittence, volatility, and anti-peaking (the wind is often the strongest when the load is low at night), and the existing wind power prediction technology has large errors. Therefore, large-scale wind power is connected to the grid for power generation. It has brought great difficulties, mainly reflected in system backup, power balance, peak shaving and frequency modulation, network security and other aspects. The power grid must provide sufficient peak-shaving and frequency-regulating capacity for wind power to ensure safe and stable operation of the power grid and peak-to-valley difference s...

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Application Information

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IPC IPC(8): H02J3/46
CPCH02J3/46Y02E10/76
Inventor 徐飞胡伟陈磊闵勇
Owner TSINGHUA UNIV
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