Optimal scheduling method for promoting wind power consumption by utilizing photo-thermal power station

A technology for optimal scheduling of solar thermal power plants, applied in wind power generation, electrical components, circuit devices, etc., which can solve the problem that the scheduling method of solar thermal power plants cannot take into account the level of wind power consumption.

Active Publication Date: 2019-07-23
LIYANG RES INST OF SOUTHEAST UNIV +1
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Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to solve the problem that the existing dispatching methods of s...

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  • Optimal scheduling method for promoting wind power consumption by utilizing photo-thermal power station
  • Optimal scheduling method for promoting wind power consumption by utilizing photo-thermal power station
  • Optimal scheduling method for promoting wind power consumption by utilizing photo-thermal power station

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Embodiment Construction

[0062] In the following, the present invention will be further described in conjunction with an example. In the standard test system of IEEE-RTS24 nodes, a wind farm is connected, and the penetration rate of wind power is 22%.

[0063] The present invention proposes an optimal scheduling method for promoting wind power consumption by using a solar-thermal power station. The method includes two aspects: a solar-thermal-wind power system structure and a solar-thermal-wind power optimization model.

[0064] (1) Photothermal-wind power system structure

[0065] By constructing a simplified mathematical model inside the solar thermal power station and analyzing a wind power ramp event identification method, the theoretical basis for the solar thermal-wind power optimization model is provided.

[0066] The simplified mathematical model of the solar thermal power station needs to meet the following constraints:

[0067] First, the solar thermal power received in the concentrating he...

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Abstract

The invention discloses an optimal scheduling method for promoting wind power consumption by utilizing a photo-thermal power station. The method comprises the following steps: firstly, a photo-thermal-wind power system structure containing a thermal storage system and an electric heating device is in combined grid-connected operation with a wind power plant; secondly, with the lowest system comprehensive cost as an objective function, through constructing a mathematical model of the photo-thermal power station in detail, utilizing the schedulability of a thermal storage system, the absorptivecapacity of an electric heating device and the good adjusting characteristic of a photo-thermal unit, a wind power optimization model is established; and finally, on the premise that the system cost is not increased, optimal scheduling is performed on the power system by using the model. According to the technical method, the adjusting capability of the system can be improved, the wind power consumption is promoted, the occurrence of wind power climbing events is reduced, and the safety stability and the operation economy of the power system are improved.

Description

technical field [0001] The invention relates to the field of safety and stability control of electric power systems, in particular to an optimal dispatching method for promoting wind power consumption by using a solar-thermal power station. Background technique [0002] In recent years, in order to implement the national energy development policy of "conservation, cleanness and safety" and promote a high proportion of renewable energy to be connected to the grid, renewable energy represented by wind power has developed rapidly. However, with the increase of wind power penetration rate, the phenomenon of wind curtailment is serious, and the problem of wind power consumption needs to be solved urgently. At the same time, wind power has strong volatility, and it is easy to quickly reduce or increase the power generation in a short period of time. The traditional power supply is insufficient in regulating ability, and wind power power climbing events will occur. Photothermal po...

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Application Information

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IPC IPC(8): H02J3/46H02J3/00H02J3/38
CPCH02J3/386H02J3/46H02J3/008H02J2203/20Y02E10/76
Inventor 汤奕戴剑丰常平
Owner LIYANG RES INST OF SOUTHEAST UNIV
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