Novel primary frequency-modulation compensation control method of unit thermal generator set

A technology of thermal power generating sets and generating sets, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc. It can solve problems such as affecting the quality of power grid power supply, failing to complete the designed output, and the decline in the unit's primary frequency regulation ability, so as to ensure safe and stable operation. , avoid economic losses, and ensure the safety of power grid operation

Active Publication Date: 2012-08-22
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
View PDF3 Cites 44 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the current primary frequency regulation design of the unit, when the unit is running under sliding pressure, especially when the opening of the regulating valve of the unit is

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 primary frequency-modulation compensation control method of unit thermal generator set
  • Novel primary frequency-modulation compensation control method of unit thermal generator set
  • Novel primary frequency-modulation compensation control method of unit thermal generator set

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] The present invention will be further described below in conjunction with the drawings and embodiments.

[0034] Such as figure 1 As shown, the design principles of the primary frequency modulation compensation control method for the new unit thermal power generating set are as follows:

[0035] Block 1: Modify the high limit of the previous frequency modulation command;

[0036] Block 2: Modify the previous frequency modulation command;

[0037] Block 3: Modify the low limit of the previous frequency modulation command;

[0038] Block 4: One-time frequency modulation command limiting block to ensure that the frequency modulation command is within the allowable range of unit operation;

[0039] Block 5: A FM command correction algorithm block, which calculates the value of a FM command after correction;

[0040] Block 6: The primary frequency modulation correction coefficient algorithm block to obtain the primary frequency modulation correction coefficient;

[0041] Block 7: Media ...

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 novel primary frequency-modulation compensation control method of a unit thermal generator set, comprising the following steps of: 1) adding upper and lower limit values according to an instantaneous generation load instruction and primary frequency modulation of the generator set; automatically calculating a primary frequency-modulation theoretical compensation load limited amplitude according to an algorithm module and setting high and low limited amplitudes of an H/L amplitude limiting module; 2) calculating a primary frequency-modulation theoretical compensation load value through a set function F1(x) according to a power grid operation frequency fluctuation difference value or a turbine rotating fluctuation value; and limiting a primary frequency-modulation compensation instruction of the generator set in a range from minus delta P to delta P through guaranteeing that the frequency modulation motion does not exceed the normal adjusting range of the generator set through the H/L amplitude limiting module; and 3) revising primary frequency-modulation compensation and operating a real-time adjusting-grade pressure, a main steam pressure and a main air temperature parameter according to the generator set; and calculating and revising a primary frequency-modulation instruction through a F2(x) to be output. The novel primary frequency-modulation compensation control method of the unit thermal generator set guarantees that the primary frequency-modulation motion of the generator set meets the design requirements and stabilizes a power supply frequency of a power grid.

Description

technical field [0001] The invention relates to a frequency modulation compensation control method of a thermal power generating set, in particular to a novel primary frequency modulation compensation control method of a unit thermal power generating set. Background technique [0002] Thermal power generating units occupy an important position in my country's electric power production. With the development of large-scale generating units and the construction of UHV and smart grids in my country, the requirements for flexible frequency modulation functions of thermal power generating units are getting higher and higher. However, the reality is that due to the influence of factors such as fuel quality and unit operation mode, the primary frequency regulation performance of the unit cannot realize the predetermined frequency compensation according to the unit design, which in turn affects the power supply quality of the power grid. [0003] There are clear requirements for 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
IPC IPC(8): H02J3/00H02J3/02
Inventor 韩英昆毕贞福郎澄宇王文宽
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap