Modernization of Automatic Chemical Control of TPP Power Units Based on Conductivity and PH Measurements

Abstract

Increasing the volume and tightening the quality standards for the water heat carrier of power units require the modernization of the chemical control system at thermal power plants (TPPs). The development of information technologies ensures the creation of automated systems of chemical-technological monitoring (SCTM) and individual devices focused on the application of reliable and inexpensive analyzers such as conductometers and pH meters with data processing using algorithms of any complexity. SCTM of feed and boiler water based on measurements of specific conductivity and pH were developed and tested under industrial conditions. Together with NPP Tekhnopribor (Moscow), a new generation analyzer Leader-APK, similar to the latest generation analyzer AMI Deltacon Power (SWAN Company), was developed. Using the analyzer in the chemical control system of a power unit of combined cycle gas turbine power plants (CCGT) allows reducing the number of automatic control devices by seven units.