Исследование влияния относительной постоянной времени инерционного участка пароперегревателя на качество регулирования температуры перегретого пара за котлом в широком диапазоне изменения нагрузок

The paper is devoted to computational investigation of influence relative time constant of an object which changes in broad band on quality of steam temperature control behind a boiler with due account of value of regulating action in the system with PI- and PID- regulator. The simulation has been based on a single-loop automatic control system (ACS). It has been revealed that the less value of the relative time constant of an object leads to more integral control error in system with PID- regulator while operating external ACS perturbation. Decrease of numerical value of relative time constant of an object while operating external perturbation causes decrease of relative time concerning appearance of maximum dynamic control error from common relative control time.Статья посвящена численному исследованию влияния относительной постоянной времени объекта, изменяющейся в широких пределах, на качество регулирования температуры перегретого пара за котлом с учетом величины регулирующего воздействия в системе с ПИ- и ПИД-регулятором. В основу моделирования положена одноконтурная система автоматического регулирования (САР). Чем меньше величина относительной постоянной времени объекта, тем больше при отработке внешнего возмущения САР с ПИД-регулятором интегральная ошибка регулирования. Уменьшение численного значения относительной постоянной времени объекта при отработке внешнего возмущения приводит к уменьшению относительного времени появления максимальной динамической ошибки регулирования от общего относительного времени регулирования

Комплексная методика оптимизации параметров динамической настройки регуляторов впрысков

The paper considers a problem pertaining to better regulation of the superheated vapour tem- perature. This improvement can be achieved while determining dynamic adjustment parameters of automatic regulation systems (ARS) due to reduction of error at approximation of experimental transient characteristics of leading and inertial areas of an object to be regulated by turning to open-closed regulation system and by using an «areas» method.Статья посвящена повышению качества регулирования температуры перегретого пара, которого можно достичь при определении параметров динамической настройки САР за счет уменьшения погрешности при аппроксимации экспериментальных переходных характеристик опережающего и инерционного участка объекта  регулирования при переходе к разомкнуто-замкнутой системе регулирования, а также за счет использования метода «площадей»

Influence of Superheated Steam Temperature Regulation Quality on Service Life of Boiler Steam Super-Heater Metal

The paper investigates influence of change in quality of superheated steam temperature regulations on service life of super-heater metal. А dependence between metal service life and dispersion value for different steel grades has been determined in the paper. Numerical values pertaining to increase of super-heater metal service life in case of transferring from manual regulation to standard system of automatic regulation (SAR) have been determined and in case of transferring from standard SAR to improved SAR. The analysis of tabular data and plotted dependencies makes it possible to conclude that any change in conditions of convection super-heater metal work due to better quality of the regulation leads to essential increase of time period which is left till the completion of the service life of a super-heater heating surface

Complex Methodology for Parameter Optimization of Dynamic Injection Regulator Ad- justment

The paper considers a problem pertaining to better regulation of the superheated vapour tem- perature. This improvement can be achieved while determining dynamic adjustment parameters of automatic regulation systems (ARS) due to reduction of error at approximation of experimental transient characteristics of leading and inertial areas of an object to be regulated by turning to open-closed regulation system and by using an «areas» method

Investigation of Relative Time Constant Influence of Inertial Part of Superheater on Quality of Steam Temperature Control Behind Boiler in Broad Band of Loading Variations

The paper is devoted to computational investigation of influence relative time constant of an object which changes in broad band on quality of steam temperature control behind a boiler with due account of value of regulating action in the system with PI- and PID- regulator. The simulation has been based on a single-loop automatic control system (ACS). It has been revealed that the less value of the relative time constant of an object leads to more integral control error in system with PID- regulator while operating external ACS perturbation. Decrease of numerical value of relative time constant of an object while operating external perturbation causes decrease of relative time concerning appearance of maximum dynamic control error from common relative control time