Isolated micro-grid hybrid energy storage optimal configuration method

A technology of hybrid energy storage and optimized configuration, applied in the direction of AC network load balancing, etc., can solve the problems of reducing the working efficiency and service life of the energy storage system

Active Publication Date: 2016-01-06
CHONGQING UNIV
View PDF4 Cites 35 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The above method aims at smoothing power fluctuations and optimizing the allocation of energy storage capacity with the goal of improving economic benefits or reducing investment costs, which provides a good technical reserve for promoting the development of microgrids in my country, but there are also shortcomings: Not only does it contain intermittent energy sources, but it also contains time-varying loads. The energy storage configuration not only needs to stabilize the output fluctuations of intermittent energy sources, but also needs to consider the random fluctuations of loads and the characteristics of daily cycles; The suitable charging and discharging time spans are different. A specific type of energy storage

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Isolated micro-grid hybrid energy storage optimal configuration method
  • Isolated micro-grid hybrid energy storage optimal configuration method
  • Isolated micro-grid hybrid energy storage optimal configuration method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0205] The specific steps for the optimal allocation of hybrid energy storage capacity of a large-scale isolated microgrid are as follows:

[0206] (1) Unbalanced power decomposition of isolated microgrid:

[0207] 1) Take an isolated microgrid in Alberta, Canada as an example to optimize the configuration of energy storage to verify the correctness and effectiveness of the model proposed in this note. Since Alberta is located in a plain area, there are sufficient wind resources. The rated output of the conventional unit is 800kW, the rated output of the wind turbine is 600kW, the cut-in wind speed of the fan is 3m / s, the cut-out wind speed is 30m / s, and the rated wind speed is 18m / s. The peak load of the microgrid in 2011 was 1.5MW, and the total load was 7269.2MW. The maximum power shortage probability allowed by the microgrid is 0.1%, the upper and lower limits of the SOC of the energy storage system are set to 0.9 and 0.1, the annual interest rate is set to 6.7% in the ec...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides an isolated micro-grid hybrid energy storage optimal configuration method. Micro-grid power supply load unbalanced power and total loads in a micro-grid are integrally considered, influences of factors that intermittent energy and load conditions fluctuates with time in the system on isolated micro-grid hybrid energy storage capacity configuration are comprehensively considered, and the isolated micro-grid hybrid energy storage capacity optimal configuration is established; in addition, a genetic algorithm is utilized for solves isolated micro-grid hybrid energy storage capacity optimal configuration models corresponding to different splitting and decomposition modes of the power supply load unbalanced power, and an isolated micro-grid hybrid energy storage optimal scheme more according with reality is determined by selection, so that the practical isolated micro-grid hybrid energy storage configuration programming requirements are better met, the utilization rate and the service lifetime of the isolated micro-grid hybrid energy storage capacity configuration are improved, the operation economy is enhanced, the comprehensive utilization cost of the isolated micro-grid is lowered, and the isolated micro-grid hybrid energy storage optimal configuration method can be widely applied to hybrid energy storage capacity optimal configuration of the isolated micro-grids.

Description

technical field [0001] The invention relates to power system planning technology, in particular to an isolated microgrid hybrid energy storage optimization configuration method, and belongs to the technical field of power system optimization planning. Background technique [0002] With the increasingly severe energy crisis and environmental pollution, renewable energy has received more and more attention in the development of electric energy. With the continuous expansion of wind energy, solar energy and other renewable energy sources connected to the grid, their inherent intermittent and random output has brought great difficulties to the grid dispatching operation. In order to reduce the impact of renewable energy access on the power grid, and to improve the shortcomings of high cost and poor controllability of single-unit access of renewable energy units, micro-grids emerged as the times require. A microgrid is a small controllable system that organically combines micro ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02J3/28
Inventor 胡博谢开贵李龙云王蔓莉彭吕斌
Owner CHONGQING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products