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

A self-adaptive pi control method to improve the voltage regulation performance of electric spring

A technology of electric springs and control methods, applied in the direction of reactive power adjustment/elimination/compensation, single-network parallel feeding arrangement, reactive power compensation, etc., can solve problems such as sudden changes in non-critical loads without consideration, and achieve self-stabilization performance, stable and efficient operation, and the effect of suppressing voltage oscillation

Active Publication Date: 2019-03-26
江苏起风电力科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current research results, the parameters of the PI controller used in the electric spring control are all fixed values, and its regulation performance needs to be further optimized, and the sudden change of the non-critical load is not considered

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
  • A self-adaptive pi control method to improve the voltage regulation performance of electric spring
  • A self-adaptive pi control method to improve the voltage regulation performance of electric spring
  • A self-adaptive pi control method to improve the voltage regulation performance of electric spring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0039] figure 1 Shown is a structural block diagram of a traditional electric spring control system. The present invention provides an adaptive PI control method for improving the voltage regulation performance and self-stability of the electric spring, and uses an adaptive PI controller to replace the traditional method of constant parameters in the electric spring. PI controller specifically comprises the following steps:

[0040] Step 1: Calculate the adaptive PI controller parameter K based on the improved PSO algorithm according to the new energy generation forecast in the electric spring installation environment and the capacity allocation of key loads / non-key loads p 、K i The initial value of K p0 , K i0 , the specific process is as follows:

[0041] (1) Randomly initialize the position and velocity of each particle in the population, where each particle represents a possible initial parameter of PI control. Since x=[K p0 ,K i0 ], so the dimension of the search spa...

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 present invention discloses an adaptive PI control method for improving an electric power spring pressure regulating performance. The method comprises the following steps: (1) calculating the initial values Kp0 and Ki0 of an adaptive PI controller parameters Kp and Ki according to the new energy generating capacity prediction and the capacity configuration of key load or non-key load in an electric power spring installation environment; (2) obtaining the voltage measurement model and a voltage reference value at the moment t in real time, and calculating the errors and an error changing rate therebetween; and (3) taking the errors and an error changing rate as input, performing real-time regulation of the initial parameters of the adaptive PI controller, and adaptively setting the parameters Kp and Ki of the PI controller. The adaptive PI control method for improving the electric power spring pressure regulating performance employs an adaptive PI controller based on the combination of the improved particle swarm optimization and the misty control algorithm to improve the voltage regulation capacity of the electric power spring and allow the electric power spring to effectively respond to the changing of the non-key load so as to improve the stability of the electric power spring and inhibit the appearance of the voltage oscillation.

Description

technical field [0001] The invention relates to the operation and control of an electric power system, in particular to an adaptive PI control method for improving the voltage regulation performance and self-stability of an electric spring. Background technique [0002] Distributed generation refers to the power generation unit connected to the distribution network based on renewable energy, which is one of the important forms of generating electricity using renewable energy. A large number of distributed generation connected to the active distribution network can effectively reduce the demand for power transmission of the transmission network, improve the reliability of power supply and reduce the power loss of the grid. However, due to the strong randomness of wind energy and solar energy, the power output of distributed wind energy / photovoltaic power generation has strong fluctuations, so that the access of a large number of distributed power generation has a huge impact ...

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): H02J3/38H02J3/18
CPCY02E40/30
Inventor 马刚徐谷超陈祎熙陈怀毅吕潇
Owner 江苏起风电力科技有限公司
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