Wind, light and water-containing multi-source complementary micro-grid hybrid energy storage capacity optimal proportion method

A hybrid energy storage and capacity technology, applied in energy storage, AC network load balancing, instruments, etc., can solve problems such as multi-source complementary microgrid output power fluctuations

Active Publication Date: 2015-06-10
STATE GRID CORP OF CHINA +3
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Problems solved by technology

[0004] The purpose of the present invention is to propose a hybrid energy storage capacity optimal ratio method for multi-source complementary micro-grids composed of renewable clean energy wind, light and water.

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  • Wind, light and water-containing multi-source complementary micro-grid hybrid energy storage capacity optimal proportion method
  • Wind, light and water-containing multi-source complementary micro-grid hybrid energy storage capacity optimal proportion method
  • Wind, light and water-containing multi-source complementary micro-grid hybrid energy storage capacity optimal proportion method

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specific Embodiment approach

[0090] The specific implementation method of the hybrid energy storage capacity of a multi-source complementary micro-grid with wind, water and water according to the present invention is as follows:

[0091] (1) Obtain the distribution of local wind, light, water and other natural resources, and simulate the annual output power curves of wind power generation, photovoltaic power generation, and hydropower generation;

[0092] (2) Obtain the annual load curve of the microgrid;

[0093] (3) Taking the minimum system cost and power fluctuation as the objective function, taking the battery capacity and supercapacitor capacity as optimization variables, simultaneously determine power balance constraints, maximum instantaneous power constraints, power supply reliability constraints, supercapacitor charging and discharging current and voltage constraints, Based on constraints such as battery SOC constraints, an optimal allocation model of hybrid energy storage in complementary micro...

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Abstract

The invention discloses a wind, light and water-containing multi-source complementary micro-grid hybrid energy storage capacity optimal proportion method. According to the method, an annual output power curve of wind power generation, photovoltaic power generation and hydroelectric generation is simulated according to the distribution condition of natural resources such as wind, light and water, an annual load curve of a micro-grid is combined, system cost and power fluctuation are used as target functions, accumulator capacity and super-capacitor capacity are used as optimization variables, and meanwhile constraint conditions such as power balance constraint, maximum instantaneous power constraint, power supply reliability constraint, super-capacitor charge and discharge current and voltage constraint and accumulator SOC (System On Chip) constraint are determined to establish a wind, light and water-containing micro-grid hybrid energy storage optimization configuration model; optimized solution of the target functions is performed by using a fuzzy decision-containing multi-target planning GA-PSO (Genetic Algorithm-Particle Swarm Optimization) algorithm to obtain the optimal proportion of the hybrid energy storage capacity. Compared with the conventional GA algorithm and PSO algorithm, the method has the advantages that the convergence rate is higher and the problem of mutual conflict of the target functions in the multi-target optimization algorithm is avoided better.

Description

technical field [0001] The invention relates to a method for optimal proportioning of micro-grid hybrid energy storage capacity including wind and water multi-source complementary micro-grid, which belongs to the technical field of micro-grid hybrid energy storage. Background technique [0002] Compared with traditional fossil energy sources such as coal and oil, energy sources such as wind energy, solar energy, and water energy have the characteristics of less pollution, large reserves, and renewable energy. Increasing the development of these clean energy sources and realizing their large-scale utilization will play a major role in alleviating the current The world's serious environmental pollution and resource depletion are of great significance and have become a focus of the current power industry. [0003] However, renewable clean energy such as wind energy, solar energy, and water energy all have the characteristics of volatility, among which wind energy and solar ener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28G05B13/04
CPCY02E70/30
Inventor 夏永洪吴虹剑程林辛建波胡蕾范瑞祥纪清照曹蓓
Owner STATE GRID CORP OF CHINA
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