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

Primary frequency regulation closed loop control method for generator set

A generator set, closed-loop control technology, applied in the direction of AC network flicker reduction, reduction/prevention of power oscillation, etc., can solve the problems of low primary frequency modulation contribution rate of the unit, and the primary frequency modulation method cannot meet the frequency modulation requirements, etc., to improve stability and safety. , the effect of improving the pass rate

Inactive Publication Date: 2016-03-09
CENT CHINA BRANCH OF CHINA DATANG CORP SCI & TECH RES INST CO LTD
View PDF2 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a closed-loop control method for the primary frequency regulation of generator sets, aiming to solve the problem that the primary frequency regulation method of the prior art cannot meet the frequency regulation requirements of all units and under all working conditions, resulting in a low contribution rate of primary frequency regulation of many units

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
  • Primary frequency regulation closed loop control method for generator set
  • Primary frequency regulation closed loop control method for generator set
  • Primary frequency regulation closed loop control method for generator set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] The specific implementation method of the primary frequency modulation closed-loop control method of the generator set in this embodiment includes:

[0022] 1) Obtain the frequency difference signal between the actual grid frequency and the grid standard frequency in real time;

[0023] 2) Determine whether the frequency difference signal in step 1) is outside the frequency modulation dead zone, if it exceeds the frequency modulation dead zone, perform step 3), if it is in the frequency modulation dead zone, return to step 1);

[0024] 3) Using the frequency difference signal in step 1), according to the corresponding function of the frequency difference signal and the frequency modulation load, the theoretical frequency modulation power is obtained, and the theoretical frequency modulation power is superimposed with the inst...

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 primary frequency regulation closed loop control method for a generator set. The method comprises steps: a frequency difference signal between an actual power grid frequency and a power grid standard frequency is acquired; whether the above frequency difference signal is out of a frequency regulation dead zone is judged, if the frequency difference signal exceeds the frequency regulation dead zone, the frequency difference signal is used to obtain a theoretical frequency regulation power according to a corresponding function between the frequency difference signal and a frequency regulation load, and the theoretical frequency regulation power and an instantaneous generator set power in the case of frequency regulation action are overlapped to obtain a power target value for the frequency regulation closed loop control; and the power target value and an actual generator set generation power form a PID closed-loop circuit, and a frequency regulation load instruction is outputted. The method of the invention can accurately control the generator set primary frequency regulation contribution rate, improve the generator set primary frequency regulation qualified rate, and improve the power grid stability and safety.

Description

technical field [0001] The invention belongs to the field of primary frequency modulation of generating sets, and in particular relates to a closed-loop control method for primary frequency modulation of generating sets. Background technique [0002] Grid frequency is the balance relationship between grid load and generator active power. It is an important control parameter for grid operation and is related to many factors such as the safety, stability, and economy of the entire grid. The main purpose of the primary frequency modulation function of the generator set is that when the frequency of the grid changes, each generator set responds quickly and adjusts the active power in time, so that the grid frequency returns to the frequency modulation dead zone, ensuring the safety and stability of the grid frequency. [0003] The contribution rate of primary frequency regulation is the most important evaluation parameter for primary frequency regulation performance of power gri...

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): H02J3/24
CPCH02J3/002H02J3/24
Inventor 董建朋
Owner CENT CHINA BRANCH OF CHINA DATANG CORP SCI & TECH RES INST CO LTD
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