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A combined dispatching method of wind, light and water storage

A joint dispatching and wind-solar technology, applied in the direction of photovoltaic power generation, wind power generation, renewable energy integration, etc., can solve the problem of the power grid's ability to absorb new energy is not strong

Active Publication Date: 2019-01-18
GUIZHOU POWER GRID CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to provide a wind-solar-water-storage joint scheduling method to solve the problem that the power grid’s ability to absorb new energy is not strong in existing technologies

Method used

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  • A combined dispatching method of wind, light and water storage
  • A combined dispatching method of wind, light and water storage
  • A combined dispatching method of wind, light and water storage

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Embodiment Construction

[0052] A joint scheduling method for wind, water and storage, comprising:

[0053] Step 1. Establish the economic optimal objective function of the combined wind, water and storage system;

[0054] Step 2. Establish the constraint conditions of the combined system of wind, water and storage:

[0055] Step 3: Obtain the optimal solution set for the optimization operation.

[0056] The economic optimal objective function for establishing the wind-solar-water-storage combined system is:

[0057]

[0058]

[0059]

[0060] Where: f it (P it ), It is the operating cost, start-up cost and shutdown cost of the thermal power unit; a i , b i 、c i is the coefficient of the operating cost function of the unit; P it , U it is the output and start-stop status of the i-th thermal power unit in the t-th period, Ui(t-1) is the output of the i-th unit in the t-1 period; ST i 、SH i is the cost of starting and stopping the i-th thermal power unit.

[0061] Step 2 establishe...

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Abstract

The invention discloses a combined dispatching method of wind, light and water storage, which comprises the following steps: 1, establishing an economic optimal objective function of the combined system of wind, light and water storage; 2, establishing that constraint conditions of the wind-light-water-storage combine system; 3, obtaining the optimal solution set of the optimized operation; A complementary output system is established, and a model is proposed to optimize the operation cost of the system. The complementary system can effectively compensate the fluctuation of new energy output,provide more stable electric power to the grid, improve the utilization rate of new energy, reduce the output adjustment of thermal power units, reduce the operating cost of the system, and provide aneffective way to solve the problem of wind, solar and water storage dispatching. The invention solves the problem that the power grid of the prior art is not strong in absorbing new energy.

Description

technical field [0001] The invention relates to the technical field of distributed power generation, and in particular to a joint dispatching method of wind, water and storage. Background technique [0002] With the continuous development of social economy, intermittent energy sources such as wind energy and solar energy are gradually replacing fossil energy due to their low-carbon economy characteristics, and their development prospects are very broad. With the rapid growth of new energy installed capacity, the fluctuation and intermittency of its output have brought great challenges to the safe operation of the power grid. At present, the research on new energy dispatching mainly focuses on the optimal dispatch of single new energy grid connection, and adjusts the power output of thermal power units to deal with the fluctuation of new energy. With the increase of the proportion of new energy installed capacity, these adjustment methods will become difficult. Wind power, p...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/46H02J3/24
CPCH02J3/24H02J3/382H02J3/383H02J3/386H02J3/46H02J2203/20Y02B10/10Y02E10/56Y02E10/76
Inventor 徐玉韬谈竹奎毛时杰谢百明高吉普徐长宝肖永齐雪雯袁旭峰吕黔苏班国邦王皆庆黄伟煌刘斌丁健马春雷
Owner GUIZHOU POWER GRID CO LTD
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