Complementary micro-grid economic operation evaluation method considering small hydropower stations

A technology of economic operation and evaluation method, which is applied in the field of small hydropower operation, can solve the problems of intermittency and randomness of output, and achieve the effects of fast convergence speed, strong versatility, and simple calculation process

Inactive Publication Date: 2016-11-09
ELECTRIC POWER RES INST STATE GRID JIANGXI ELECTRIC POWER CO +3
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Problems solved by technology

However, since photovoltaic and wind energy are easily affected by natural factors such as day and night changes, weather conditions, and wind strength, their output is intermittent and random.

Method used

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  • Complementary micro-grid economic operation evaluation method considering small hydropower stations
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  • Complementary micro-grid economic operation evaluation method considering small hydropower stations

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Embodiment Construction

[0018] Such as figure 1 As shown, the steps of a kind of complementary microgrid economic operation evaluation method considering small hydropower in the present invention are as follows:

[0019] (1) Obtain the annual output of local wind, light, and water distributed energy sources, and analyze the complementary characteristics of wind, light, and water distributed energy sources;

[0020] (2) Obtain the annual load curve of the microgrid;

[0021] (3) Taking energy storage capacity, microgrid equipment installation cost and system operation and maintenance cost as the objective function, and taking system capacity, distributed power generation ratio and battery charging and discharging characteristics as constraints;

[0022] (4) Using the original dual interior point algorithm, calculate the optimal ratio of each distributed power source in the complementary micro-grid composed of different distributed power source combinations and the energy storage capacity that needs t...

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Abstract

The invention discloses a complementary micro-grid economic operation evaluation method considering small hydropower stations. The method comprises the following steps of: calculating an optimum proportion of each distributed power supply in a complementary micro-grid which is formed by combination of different distributed power supplies and energy storage capacity that needs to be configured for the distributed power supply on the basis of a primal-dual interior-point algorithm by taking energy storage capacity, a micro-grid equipment installation cost and system operation and maintenance cost as objective functions, and taking system capacity, a distributed power generation proportion and storage battery charge-discharge characteristics as constraint conditions; and establishing complementary micro-grid economic operation evaluation indexes, and carrying out comparison and analysis on a obtained complementary micro-grid, so as to form an optimum complementary micro-grid economic operation mode. A result shows that the micro-grid operation economic benefit is optimal when the contributions of three distributed power supplies including wind, light and water are complementary.

Description

technical field [0001] The invention relates to a method for evaluating the economic operation of a complementary micro-grid considering small hydropower, and belongs to the technical field of small hydropower operation. Background technique [0002] As renewable clean energy, wind, light, and water have the advantages of zero pollution, wide distribution, and large content, and occupy an increasingly important position in modern power systems. However, since photovoltaic and wind energy are easily affected by natural factors such as day and night changes, weather conditions, and wind strength, their output is intermittent and random. For small hydropower stations, most of them have small storage capacity or no storage capacity. In the short term, their output is basically unchanged, but from the perspective of seasonal time scale, there are wet seasons and dry seasons. However, my country's solar energy resources are abundant in summer and autumn, but scarce in spring and ...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCY02P80/14G06Q10/06393G06Q50/06
Inventor 夏永洪吴虹剑辛建波程林范瑞祥曹蓓纪清照
Owner ELECTRIC POWER RES INST STATE GRID JIANGXI ELECTRIC POWER CO
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