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

Design method of synchronous generator excitation output feedback controller

A technology of synchronous generator and output feedback, applied in the direction of synchronous generator control, control generator, control system, etc., can solve the problems of difficult state feedback and complex excitation control algorithm.

Inactive Publication Date: 2017-10-03
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems raised by the above-mentioned background technology, the present invention aims to provide a design method of a synchronous generator excitation output feedback controller, which solves the problems that the existing excitation control algorithm is complicated and the state feedback is difficult to realize in the power system

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
  • Design method of synchronous generator excitation output feedback controller
  • Design method of synchronous generator excitation output feedback controller
  • Design method of synchronous generator excitation output feedback controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0052] The mathematical model established by the single-machine infinite system is selected as the analysis basis, and the third-order model of the synchronous generator is taken, that is, the transient electromotive force E′ of the generator is q , relative angular velocity ω (unit: rad / s), rotor power angle δ (unit: rad / s) are state variables, y 1 、y 2 As the output quantity, a third-order state-space system model is established, and the specific form is as follows:

[0053]

[0054] Among them, P e =E' q V s sinδ / X' ds Active power output for the generator, using per unit value; ω 0 is the synchronous speed of the generator rotor, in rad / s; V s System voltage amplitude; H is rotor inertia time constant, P m is the output power of the prime mover, using per unit value; D is the damping coefficient; X d Generator stator windin...

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 design method of a synchronous generator excitation output feedback controller. First, a three-phase state space system model of a synchronous generator is built; then, the three-phase state space system model is reshaped equivalently into a four-phase state space system model by using a variable replacement method; then, an excitation controller is designed through output feedback; and finally, an optimized excitation controller is obtained by using a quadratic sum method. The existing excitation control algorithm is complex and state feedback cannot be realized in a power system. The method solves the problems in the prior art.

Description

technical field [0001] The invention belongs to the technical field of power system control, and in particular relates to a design method of a synchronous generator excitation output feedback controller. Background technique [0002] With the development of the times, my country's power system has entered the stage of large power grids, large units, AC-DC hybrid long-distance transmission, and cross-regional networking, which determines that the power system will become more and more complex. The power system is a complex nonlinear system, and how to effectively ensure the stable operation of the power system has always been the research focus of researchers, among which suppressing the occurrence of low-frequency oscillations is the top priority. [0003] As an important part of the power system, the excitation control system directly participates in the operation control of the synchronous generator. Excitation control has developed from the initial single-variable pure p...

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): H02P9/10H02J3/24H02P103/20
CPCH02J3/24H02P9/105H02P2103/20
Inventor 万勇田红星杨晨
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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