System and method for two-level distribution network coordination control based on load forecasting

A technology of load forecasting and secondary control, applied in the direction of reactive power adjustment/elimination/compensation, reactive power compensation, etc., can solve problems such as incomplete model information, difficult coordination and control of high-voltage distribution network and medium-low voltage distribution network, etc.

Inactive Publication Date: 2015-01-28
CHINA AGRI UNIV
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the model information is not perfect, which brings certain difficulties to the coordinated control of the high-voltage distribution network and the medium-low voltage distribution network.

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
  • System and method for two-level distribution network coordination control based on load forecasting
  • System and method for two-level distribution network coordination control based on load forecasting
  • System and method for two-level distribution network coordination control based on load forecasting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0041] The invention discloses a two-level coordination control system of a distribution network based on load forecasting. The system includes: a gateway, a first-level control module and a second-level control module.

[0042] Gateway, used to obtain the total active power, total reactive power, and maximum compensation capacity of reactive equipment at each gateway according to load forecasting; it is set at the busbar on the high-voltage side of the transformer connecting the high-voltage distribution network and the medium-low voltage distribution network Or at the bus bar on the low-voltage side, each transformer is provided with a corresponding gate. The gateway controls the operation of its correspon...

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 system and a method for two-level distribution network coordination control based on load forecasting. The system comprises gateways, a first-level control module and a second-level control module. The design core of the method of the invention is as follows: a medium and low-voltage distribution network proposes a reactive power regulation range constraint to a high-voltage distribution network, the high-voltage distribution network proposes a voltage regulation range constraint to the medium and low-voltage distribution network, and both networks consider the constraints proposed by each other in optimization calculation, which not only embodies the voltage regulation capability of the high-voltage distribution network to the medium and low-voltage distribution network, but also embodies the reactive power compensation capability of the medium and low-voltage distribution network to the high-voltage distribution network. By adopting the system and the method of the invention, coordinated optimization control on the high-voltage distribution network and the medium and low-voltage distribution network is realized, and overall optimal voltage and reactive power control in the global range is realized, thereby reducing the network loss effectively and improving the voltage level of the distribution networks.

Description

technical field [0001] The invention relates to the technical field of voltage and reactive power control, and more specifically relates to a load forecast-based secondary coordinated control system and method for distribution networks. Background technique [0002] Voltage and reactive power control is to control the voltage and reactive power output of capacitor banks, transformer taps, distributed power sources, etc. after the active power dispatching of the power grid is completed, so that the operating state of the power grid tends to be optimal. The optimal control of voltage and reactive power can not only improve power quality and voltage stability margin, but also effectively reduce network loss. [0003] The distribution network involves many voltage levels, including 110kV, 35kV, 10kV, 0.4kV, etc.; the lines are radially distributed, the number of nodes is large and scattered, and the number of voltage and reactive power adjustment equipment is large and distribut...

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): H02J3/18
CPCY02E40/30H02J3/18
Inventor 耿光飞季玉琦唐巍
Owner CHINA AGRI 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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap