Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for analyzing influence of output power fluctuation of wind farm on power grid

An output power and wind farm technology, applied in the field of analyzing the impact of wind farm output power fluctuations on the power grid, can solve problems such as difficulties in wind power grid connection, operation difficulties, and technical difficulties in wind power grid connection, achieve significant economic and social benefits, improve The effect of utilization efficiency

Active Publication Date: 2011-05-18
STATE GRID ELECTRIC POWER RES INST +1
View PDF2 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The uncertainty of wind resources and the operating characteristics of wind turbines make the output power of wind farms intermittent and volatile. Large-scale grid-connected wind power brings difficulties to the safe and stable operation of the power system. Difficulties and bottlenecks are gradually emerging, and the difficulty of wind power grid integration has become a focus of attention

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 analyzing influence of output power fluctuation of wind farm on power grid
  • Method for analyzing influence of output power fluctuation of wind farm on power grid
  • Method for analyzing influence of output power fluctuation of wind farm on power grid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The method for analyzing the impact of wind farm output power fluctuations on the power grid in the present invention is mainly to quantitatively analyze the impact of regional wind power output power fluctuations on regional power grid ACE fluctuations, which consists of three links: basic data collection, calculation, comparison of limit values, early warning, and flow Such as figure 1 shown.

[0024] 1) Basic data collection

[0025] Step1: Collect the predicted power of each grid-connected wind farm from the wind power forecasting system of each grid-connected wind farm in North China Power Grid , such as the predicted power of two wind farms in the North China Power Grid from 00:00 to 12:00 on December 1, 2010.

[0026] Step2: Reorganize according to time, sum the predicted power of wind farms at the same time point, according to the formula

[0027]

[0028] Calculate the total power of wind power forecast in North China Power Grid , such as the tot...

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 relates to a method for analyzing the influence of output power fluctuation of a wind farm on a power grid, which comprises the following steps of: calculating forecast ACE (Area Control Error fluctuation) of a next moment by using the wind power forecasting data of a single wind farm in an area power grid, the actual wind power data of the area power grid and the ACE fluctuation data of the area power grid, wherein the ACE is an error value formed according to the current load, power generation, power collection, frequency and other factors of the power grid, and reflects the power balance condition of an area;, comparing the ACE fluctuation with an ACE threshold, and giving out early warning. The method lays the foundation for large-scale wind power grid-connected access and scheduling, is favorable for improving the utilization efficiency of green energy and has obvious economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of wind power generation and distribution, and relates to a method for analyzing the influence of wind farm output power fluctuations on a power grid. Background technique [0002] In recent years, my country's grid-connected wind power has developed rapidly. By the end of 2009, the total installed capacity of wind power in the country reached 25.805 million kilowatts (a total of 21,581 wind turbines), ranking second in the world. By September 2010, my country had four provinces The installed capacity of wind power in the power grid exceeds 2 million kilowatts. By 2020, the total installed capacity of wind power is expected to reach 150 million kilowatts, and seven ultra-large-scale wind power bases of 10 million kilowatts will be built. The uncertainty of wind resources and the operating characteristics of wind turbines make the output power of wind farms intermittent and volatile. Large-scale grid-connected...

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): G06F19/00F03D9/00
CPCH02J3/386Y02E10/763Y02E10/725Y02E10/72G06F17/5009G06F30/20H02J2300/28H02J3/381H02J3/004Y02E10/76Y04S10/50
Inventor 张磊罗亚洲栗向鑫余有胜郑贤福翟志强徐冲周玲
Owner STATE GRID ELECTRIC POWER RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com