ESP Tuning to Reduce Auxiliary Power Consumption and Preserve Environment

Abstract

This paper presents case study conducted on BE type electrostatic precipitator (ESP) installed in 3300 MW thermal power plant. This ESP is equipped with Fujian Longking make namely MVC 196. This paper discuss about the basic working principle of ESP and different working modes of ESP. Study is conducted to reduce auxiliary power consumption in ESP. Various suggestion and approaches are given. ESP system are operating between 50-80mg/Nm3 ESP outlet emission as per coal flow. Therefore, the focus shall be on ESP transformer rectifier set power reduction to maintain opacity as per environmental norms, because as per Indian coal feeding strategy coal flow may vary between 400-430 T/hour to achieved full load. To explore the possibility of optimizing the power consumption through changing of charge ratio on the basis of coal flow/ opacity/ load. Another desire is to have ash handling for improvement of efficiency, power off rapping feature with auto command mode on the basis of load and coal flow criteria. An input is given to R&D and industrial expects by discussing different factors and it's relationship which are affecting performance of ESP.