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

DC distribution network adaptive droop control method based on voltage sections

A technology of DC distribution network and voltage partition, applied in power transmission AC network, DC network circuit devices, electrical components, etc., can solve the problem of voltage over-limit, no consideration of control unit power margin and regulation efficiency, node voltage limitation, etc. question

Inactive Publication Date: 2019-04-05
CHONGQING UNIV
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method only considers one of the factors, that is, it pays attention to the stability of node voltage in the process of power regulation, but does not pay attention to the rationality of fluctuating power distribution, does not consider the power margin and regulation efficiency of the control unit; or pays attention to the power margin of the control unit and regulation efficiency, but there is no limit to the node voltage, it is easy to cause the voltage to exceed the limit

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
  • DC distribution network adaptive droop control method based on voltage sections
  • DC distribution network adaptive droop control method based on voltage sections
  • DC distribution network adaptive droop control method based on voltage sections

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0074] Such as figure 1 As shown, the present invention provides a DC distribution network adaptive droop control method based on voltage zones, including steps:

[0075] S1: Perform power flow calculation on the DC distribution network with determined topology and control unit operating parameters, and determine the voltage reference value and power reference value, specifically including the DC voltage reference value U dcref and auxiliary converter station transmission power reference value P Aref ; In this embodiment, the determination of the voltage reference value and the power reference value for the power flow calculation of the DC distribution network is a prior art, and will not be repeated here.

[0076] S2: Divide the working conditions of the DC distribution network into the first type of working conditions and the second type of working conditions; perform power flow calculations under the two types of working conditions respectively, and calculate the critical ...

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 a DC distribution network adaptive droop control method based on voltage sections, comprising the steps of S1, determining a voltage reference value and a power reference value;S2, dividing a voltage operation section into three types of voltage operation sections; S3, detecting the DC voltage of an auxiliary converter station in real time; and S4, determining which type ofvoltage operation section of the three types of voltage operation sections the DC voltage of the auxiliary converter station is in, and executing corresponding control. The method executes differentcontrol strategies in different sections, ensures voltage stability, comprehensively considers the operating state of a control unit and real-time power margin, establishes an adaptive droop coefficient index, and ensures the rationality and efficiency of power distribution.

Description

technical field [0001] The invention relates to the technical field of operation control of a DC distribution network, in particular to an adaptive droop control method for a DC distribution network based on voltage partitions. Background technique [0002] Distributed energy has been widely valued for its clean, environmentally friendly, and renewable characteristics, and more and more distributed energy needs to be connected to the grid. Distributed energy is mostly DC power supply. Compared with AC distribution network, DC distribution network can save a lot of DC / AC commutation links, and can also effectively solve the problem of large loss of distribution network lines, voltage fluctuations, grid harmonics and three-phase inconsistencies. A series of power quality problems such as balance, improve the reliability and controllability of the distribution network. [0003] The operating characteristics of the DC distribution network and the traditional AC distribution net...

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): H02J1/00H02J3/36
CPCH02J1/00H02J3/36H02J2203/20Y02E60/60
Inventor 林莉罗皓金鑫郭嘉琛汪莎莎朱丽云
Owner CHONGQING UNIV
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