Supercharge Your Innovation With Domain-Expert AI Agents!

Novel subsynchronous oscillation damping controller

A technology of subsynchronous oscillation and damping controller, which is applied in the direction of reducing/preventing power oscillation, AC network to reduce harmonics/ripple, reactive power compensation, etc., to improve the suppression effect, increase electrical damping, and make the input signal flexible.

Active Publication Date: 2010-01-20
CHINA ELECTRIC POWER RES INST +2
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There is no same or similar subsynchronous oscillation damping controller proposed by the present invention at home and abroad

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
  • Novel subsynchronous oscillation damping controller
  • Novel subsynchronous oscillation damping controller
  • Novel subsynchronous oscillation damping controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] figure 1 A schematic diagram of a new type of subsynchronous oscillation damping controller using capacitors and inverters connected in series to suppress SSO / SSR is given, where C is the series capacitor and C 1 is the bypass capacitor; the branch current of the series compensation capacitor is i C , the bypass capacitor branch current is i 1 . The present invention makes the entire bypass capacitor branch with inverter present a predetermined impedance characteristic through a preset inverter control strategy to absorb, damp or bypass sub-synchronous frequency components, thereby increasing the electrical damping of the corresponding sub-synchronous frequency , and finally achieve the purpose of suppressing power system SSO / SSR.

[0032] When using the new subsynchronous oscillation damping controller to suppress SSO / SSR, in addition to using figure 1 The shown subsynchronous oscillation damping controller can be connected to the power system in parallel with the ...

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 novel subsynchronous oscillation damping controller which adopts the structure that a capacitor is connected with an inverter in series or in parallel, or the controller is only formed by the inverter; according to the preset control policy of the inverter, the subsynchronous oscillation damping controller takes on the characteristics of the preset impedance to absorb, damp or bypass subsynchronous frequency component, thus increasing the electrical damping of the corresponding subsynchronous frequency and finally achieving the aim of inhibiting subsynchronous oscillation (SSO) or subsynchronous resonance (SSR) of an electric power system.

Description

technical field [0001] The invention proposes a new type of damping controller for suppressing subsynchronous oscillations of power systems, which belongs to the field of safety and stability control of power system grids, and specifically relates to inverters, inverter series capacitors, inverter parallel capacitors, etc. that adopt appropriate control strategies structure to suppress power system subsynchronous oscillation / resonance (SSO / SSR). Background technique [0002] Due to the geographical mismatch between primary energy and power loads, large-scale, cross-regional interconnected power grids have become one of the most important features of modern power systems, and long-distance, large-capacity, and cross-regional power transmission has become inevitable. While the interconnection of large power grids brings huge economic benefits, it also makes the dynamic behavior of the power system more complex and difficult to grasp. Weak and cannot be effectively suppressed ...

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): H02J3/18H02J3/24H02J3/01
CPCY02E40/30Y02E40/40
Inventor 武守远吉平戴朝波王宇红
Owner CHINA ELECTRIC POWER RES INST
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