Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for evaluating reliability of grid-connected microgrid based on timing simulation

A time-series simulation and reliability technology that can be used in climate sustainability, AC network circuits, sustainable manufacturing/processing, etc., and can solve problems such as complex operating characteristics and control strategies

Active Publication Date: 2014-11-26
CHONGQING UNIV
View PDF3 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The microgrid contains various types of new energy sources, and the output power and operating characteristics are more related to the external environment, which leads to more complex operating characteristics and control strategies of the system.

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
  • Method for evaluating reliability of grid-connected microgrid based on timing simulation
  • Method for evaluating reliability of grid-connected microgrid based on timing simulation
  • Method for evaluating reliability of grid-connected microgrid based on timing simulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] The specific implementation manner and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0048] This embodiment adopts figure 1The grid-connected microgrid circuit structure shown in the figure shows that the internal power supply of the microgrid is mainly composed of wind turbines, diesel generators and energy storage systems. There are 8 loads in total, including LP11~LP13 and LP19~LP23. An intelligent switch is installed on the branch road, which can effectively cut off the load current. The cut-in, rated and cut-out wind speeds of the wind turbine are 3m / s, 8m / s and 15m / s respectively. The rest of the relevant data are shown in Table 1 and Table 2.

[0049] Table 1 Microgrid internal power supply and energy storage system parameters

[0050]

[0051] Table 2 Component reliability parameters

[0052]

[0053] Specifically follow the steps below:

[0054] Step 1: Generate a s...

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 discloses a method for evaluating the reliability of a grid-connected microgrid based on timing simulation. The method for evaluating the reliability of the grid-connected microgrid based on timing simulation comprises the steps that firstly, the timing output of a wind turbine generator is calculated based on a wind speed Weibull distribution model and an output power characteristic curve of the wind turbine generator; secondly, a timing charging and discharging model of an energy storage system is established; finally, a new reliability index is provided according to a load reducing strategy used when the microgrid operates in the isolated island mode. According to the method for evaluating the reliability of the grid-connected microgrid based on timing simulation, the reliability of existing grid-connected microgrids is simulated and evaluated, calculation is convenient, the result is visual, and the power supply reliability of the grid-connected microgrid can be learnt effectively.

Description

technical field [0001] The invention relates to a power system reliability evaluation technology, in particular, a grid-connected micro-grid reliability evaluation method based on timing simulation. Background technique [0002] With the rapid development of society and economy, energy and environmental issues have drawn increasing attention. Conventional energy not only has limited resources, but even causes serious environmental pollution, which is contrary to the scientific strategies of sustainable development, energy conservation and environmental protection. In order to reduce the impact on the environment and meet the ever-increasing energy demand, the micro-grid based on new energy power generation has also attracted the attention of power companies and users, and the reliability of the micro-grid and its impact on the power grid and users have become the focus of It is one of the important research topics in the development and application of microgrid. Due to the...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCY02P80/14Y04S10/52
Inventor 谢开贵胡博王杨余娟任洲洋王蔓莉郭宇航
Owner CHONGQING UNIV