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

New energy grid-connected power control method based on predictive regulation performance and safety constraints

A technology of safety constraints and power control, applied in the direction of single-network parallel feeding arrangement, etc., can solve the problems that cannot truly reflect the transient state and dynamic security and stability characteristics of the power grid, so as to reduce the safety and stability margin of the power grid, improve initiative, and improve real-time effect

Active Publication Date: 2015-12-02
NANJING NARI GROUP CORP +2
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention divides the new energy power station into a plurality of power station groups with similar control performance cost ratio indicators according to the control performance cost ratio index of the grid-connected power control of the new energy power station at the current moment to the change of the safety and stability margin of the power grid, thereby solving the problem of accessing the power transmission channel Different groups of new energy power stations cannot truly reflect the current transient state and dynamic security and stability characteristics of the power grid

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
  • New energy grid-connected power control method based on predictive regulation performance and safety constraints
  • New energy grid-connected power control method based on predictive regulation performance and safety constraints
  • New energy grid-connected power control method based on predictive regulation performance and safety constraints

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0046] figure 1 Step 1 describes that if the control center needs to control the grid-connected active power of the new energy power station according to the requirements of safe and stable operation of the power grid at this time, then enter step 2); otherwise, end this method.

[0047] figure 1 In step 2, it is described that the grid-connected active power prediction accuracy and grid-connected active power adjustment performance index of the new energy power station participating in the current grid-connected active power control are calculated respectively by the following method, and then enter step 3);

[0048] First of all, the grid-connected active power prediction values ​​of each new energy power station in each grid-connected active power assessment period before the current moment are connected by a straight line to obtain each new en...

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 new-energy connected-grid power control method based on prediction and adjustment performance and safety constraint and belongs to the technical field of electric-power system scheduling operation and control. According to control performance-price-ratio indexes of power-gird safety stability margin changes by new-energy-power-station connected-grid power control at a current moment, the new-energy connected-grid power control method divides new-energy power stations into a plurality of power-station groups which are approximate in control performance-price-ratio index so that a problem that grouping of the new-energy power stations according to the difference of connection power transmission channels can not reflect truly current transient and dynamic safety stability characteristics of a power grid is solved. The new-energy connected-grid power control method based on the prediction and adjustment performance and the safety constraint is capable of improving instantaneity, reliability and precision of new-energy power-station connected-grid active-power limitation and instantaneity, reliability and precision of new-energy power-station connected-grid active-power improvement and activeness of new-energy power-station connected-grid active-power prediction and control technology equipped level improvement.

Description

technical field [0001] The invention belongs to the technical field of power system scheduling operation and control. More precisely, the invention relates to a method for real-time control of grid-connected power of new energy sources considering the constraints of safe and stable operation of the power grid. Background technique [0002] The power generation characteristics of new energy power plants such as wind power and photovoltaic power plants are volatile, random and intermittent. In order to fully absorb the power of new energy power plants under the premise of ensuring the safety and stability of the power grid, the power grid control center not only needs to master the grid connection of new energy power plants Power prediction information, and it is necessary to be able to control the grid-connected power of new energy power plants in real time. GB / T19963-2011 "Technical Regulations for Wind Farm Connected to Power System" promulgated by the National Standardizat...

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 Patents(China)
IPC IPC(8): H02J3/48
Inventor 徐泰山汪宁渤马明马彦宏刘强周强段慧路亮王昊昊
Owner NANJING NARI GROUP CORP
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