Check patentability & draft patents in minutes with Patsnap Eureka AI!

Control method and device of hybrid type active power dynamic filter in intelligent power grid

A dynamic filter, smart grid technology, applied in active power filtering, harmonic reduction devices, AC networks to reduce harmonics/ripples, etc., can solve the problem that APF is difficult to work in voltage grids of 35KV and above

Active Publication Date: 2012-01-18
山西合创电力科技有限公司
View PDF2 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the technical difficulty that the existing APF is difficult to work in the 35KV and above voltage grid, and to provide a hybrid active power dynamic filter in the smart grid that can work in the 35KV and above voltage grid control method and device

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
  • Control method and device of hybrid type active power dynamic filter in intelligent power grid
  • Control method and device of hybrid type active power dynamic filter in intelligent power grid
  • Control method and device of hybrid type active power dynamic filter in intelligent power grid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] In the control method of the hybrid active power dynamic filter (Hybrid Active Power Dynamic Filter, referred to as HAPDF) in the smart grid in this embodiment, it connects the inductance-capacitance LC passive filter and the active power filter APF in series , Use the inductance and capacitance LC passive filter to filter out the 5th and 7th harmonics in the power system, and at the same time, use the active power filter APF to filter out the remaining higher harmonics greater than the 11th odd harmonic , Instantaneous suppression of harmonics and instantaneous reactive power compensation, so that the system current and voltage run in the lead, lag and power factor is 1.

[0015] Such as figure 1 As shown, the device for realizing the control method of the hybrid active power dynamic filter in the smart grid in the above embodiment includes a current and voltage real-time sampling circuit 1, a system current and voltage synchronous detection circuit 2, which is synchro...

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 relates to a control method and device of a hybrid type active power dynamic filter in an intelligent power grid dominated by a new-energy micro grid, which mainly solves the technical difficulty that the traditional APF (Active Power Filter) is relatively difficult to work in a 35kV and above voltage grid. The technical scheme of the invention is a control method of the hybrid type active power dynamic filter in the intelligent power grid; in the method, an LC inductance-capacitance (LC) passive filter is connected in series with an APF, quintic and septic harmonic waves are filtered by using the LC passive filter, remaining undecimal odd-above harmonic waves are filtered by using the APF, harmonic waves are inhibited instantaneously and instantaneous passive compensation is carried out, and system current and voltage is in advanced or lagged operation with a power factor of 1. The control device provided by the invention mainly comprises a harmonic passive filter circuit, an active filter circuit of an insulated gate duplex triode switch and the like.

Description

technical field [0001] The invention relates to a control method and device for a hybrid active power dynamic filter in a smart grid, which belongs to a hybrid active power dynamic filter used in a smart grid mainly using a new energy micro grid Control method and device. Background technique [0002] Within the scope of the world's power system, the micro-grid with new energy as the main body occupies an increasingly important position in the smart grid. However, the randomness, dispersion, and instability of major energy sources such as wind energy, solar energy, and biomass energy in new energy sources have caused many problems that need to be solved when the micro-grid is connected to the main power grid. The emergence and management of serious harmonics It is one of the more prominent issues. Active Power Filter (APF) has been widely used to suppress grid harmonics and compensate reactive current to improve power factor and power quality, but the voltage level at the ...

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): H02J3/01H02J3/18
CPCY02E40/40Y02E40/22Y02E40/20
Inventor 郑德化孙雁卿李彦昌李刚菊王世杰杨文元范莉平刘丽娟赵永强谢兰张晓巍朱蓬帅郝建红韩亚楠高晋萍
Owner 山西合创电力科技有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com