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

Active power control method and system based on voltage sensitivity subarea

A technology of voltage sensitivity and control method, which is applied in photovoltaic power generation, electrical components, circuit devices, etc., can solve the problems of large amount of communication and calculation, lack of theoretical calculation basis, etc., to reduce the amount of calculation, realize economy and fairness Effect

Active Publication Date: 2017-12-22
NINGBO POWER SUPPLY COMPANY STATE GRID ZHEJIANG ELECTRIC POWER +1
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these partitioning methods either lack theoretical calculation basis, or have a large amount of communication and calculation

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
  • Active power control method and system based on voltage sensitivity subarea
  • Active power control method and system based on voltage sensitivity subarea
  • Active power control method and system based on voltage sensitivity subarea

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0059] see figure 1 , this embodiment discloses a method for active power control based on voltage sensitivity partitions, which specifically includes the following steps:

[0060] S101: Transform the entire feeder in the distribution network system into a cascade of multiple two-port networks to obtain a composite two-port transmission parameter matrix;

[0061] Preferably, the specific execution process of S101 is as follows:

[0062] Equivalently transfor...

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 application provides an active power control method and system based on voltage sensitivity subareas; the method comprises the following steps: equivalently transforming the whole feed line in a distribution network system into a plurality of two-port network cascade so as to obtain a complex two-port transmission parameter matrix; respectively calculating voltage sensitivity photovoltaic contributed on other photovoltaic user grid connected point by each photovoltaic user grid connected point according to a superposition theorem and the complex two-port transmission parameter matrix, thus obtaining a voltage sensitivity matrix; dividing each the photovoltaic user grid connected point on the feed line into one or more voltage autonomous control area according to the voltage sensitivity matrix; when the feed line voltage exceeds a limit, calculating the active power reduction quantity of each the photovoltaic user grid connected point according to the voltage sensitivity of each the photovoltaic user grid connected point in the voltage autonomous control area to which the photovoltaic user grid connected point with the exceeded voltage is located.

Description

technical field [0001] The present invention relates to the technical field of photovoltaic power generation, and more specifically, to an active power control method and system based on voltage sensitivity partitioning. Background technique [0002] With the increasingly severe global energy, environment and climate problems, it has become the consensus of the whole society to accelerate the development and utilization of renewable energy to promote economic development. Among the existing renewable energy power generation technologies, photovoltaic power generation technology is becoming more and more mature and has been widely used. The access of distributed photovoltaics to the distribution network has brought new problems to the safe and stable operation of the power grid. When the photovoltaic penetration rate is high, there will be a reverse power flow along the feeder, which will cause the voltage at the access point to rise, and even the voltage will exceed the lim...

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): H02J3/38H02J3/48
CPCH02J3/383H02J3/48Y02E10/56
Inventor 周开河朱承治徐孝忠龚向阳王威王波虞殷树方云辉
Owner NINGBO POWER SUPPLY COMPANY STATE GRID ZHEJIANG ELECTRIC POWER
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