High-voltage high-capacity flexible system PI controller parameter determination method for aerial conductor

A parameter-determined, large-capacity technology, applied in the general control system, adaptive control, control/adjustment system, etc., can solve unrealistic problems, save manpower and material resources, and achieve the effect of real and reliable calculation results

Inactive Publication Date: 2017-10-24
STATE GRID FUJIAN ELECTRIC POWER RES INST +2
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 2) Affected by factors such as construction cost and construction period, it is impractical to obtain accurate PI controller parameters through on-site investigation and repeated tests

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
  • High-voltage high-capacity flexible system PI controller parameter determination method for aerial conductor
  • High-voltage high-capacity flexible system PI controller parameter determination method for aerial conductor
  • High-voltage high-capacity flexible system PI controller parameter determination method for aerial conductor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0055] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0056] The existing method for determining the parameters of the PI controller of the high-voltage and large-capacity flexible straight system for overhead lines mainly adopts the method of field measurement and experiment. In the case of confidence, it is necessary to further study the factors that affect the test results and their mechanism of action, and to screen the reliability values ​​for use. Considering factors such as construction cost and construction period, it is not practical to obtain PI controller parameters completely through on-the-spot investigation. To save time and cost, t...

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 high-voltage high-capacity flexible system PI controller parameter determination method for an aerial conductor, belonging to the field of HVDC equipment parameter type selection. The method includes acquiring the control system transfer function, and adopting the traditional frequency response design theory to estimate the control system complete parameters; performing electromagnetic transient simulation and listing the objective function based on the simulation result; and repeatedly calculating and solving the objective function through a simplex algorithm to realize the determination of PI parameters. The method is advantageous in that onsite measurement and experiment are not needed, and manpower and material resources can be saved; the calculation result is real and reliable, the parameter inaccuracy caused by instrument precision and artificial errors in the onsite measurement can be prevented; and according to the project needs, the established parameters are converted, and the PI control system parameter selection can be carried out according to the line operation requirements.

Description

technical field [0001] The invention relates to the field of parameter selection of high-voltage direct current transmission equipment, in particular to a method for determining parameters of a PI controller of a high-voltage large-capacity flexible straight system for overhead lines. Background technique [0002] Due to its strong feasibility and robustness, the double closed-loop vector-oriented PI controller has been used in HVDC transmission system to improve the performance of the converter. The inner loop control system of the converter uses the PI controller to make the active and reactive currents generated by the outer loop control track the reference value through feed-forward decoupling control to realize the control of various variables of the system. Therefore, the selection of PI controller parameters for different control systems in the converter plays a decisive role in the quick response, dynamic performance and system stability of the converter. [0003] A...

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 & AuthorityApplications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor杜镇宇阳岳希许韦华江伟黄道姗张慧瑜季明晶涂莉杨双飞张伟骏辛业春丛佳琦
OwnerSTATE GRID FUJIAN ELECTRIC POWER RES INST