Considering the turbine back-pressure effect of thermal units to optimize the PQ_power generation in power system

Abstract

A new algorithm of PQ_power optimization is mentioned and some typical numerical examples are presented in this article. The  fuel cost characteristics being obtained in form  of  superposition of  some  high order polynomial  and sinusoidal functions can  approximately  simulate  the  turbine  back-pressure  effect  of  the generator  units  at  the electrical thermal stations  and  solve the problem of economic active power dispatch.

A new loss  factor formula  expressing  the  network transmission power losses  is a  second  order  polynomial  function  of  generator  powers containing a  square matrix. This loss factor formula is proposed  for optimum solution of generator reactive powers in multi-machine power system.