Variable Frequency Energy-saving Analysis of City Heat Power Station Heating System

摘要

In this paper, circular water pump of a thermal station in Shijiazhuang is taken as the research object of the heating system, whose energy consumption is analyzed. The circular water pump adopts variable frequency speed regulation control, which changes the waste of energy from the previous control system with flow control valve. Along with outdoor temperature change, this paper sets up the mathematical model of the operation adjustment. It is calculated by the analysis: the system can save electricity about 77500 degrees in a heating period. At the same time frequency conversion efficiency can reach 30.88 %, and electricity consumption is only 0.69 of the original heating system. It changes the heating system shortcomings which are low efficiency and big energy consumption before, and improves energy efficiency.