PROCESS AND DEVICE FOR DETECTING THE LOAD ANGLE OF A GENERATOR CONNECTED TO AN ELECTRIC SUPPLY NETWORK

摘要

Critical fluctuations in the real power can occur between the generator (3) and the supply network (2) in an electrical supply network (2) which contains a generator (3). It is valid to determine the load angle of the ganerator (3) as a measure for these fluctuations in the real power. It is proposed according to the invention to measure the real and reactive power flow P and Q and the voltage V on a line (1) to the generator (3), and to feed the measured values together with the reactance values YL and YQ of the yenerator and of the line to a computing device (5) in order to solve a mathematical relationship in which an output signal .delta. is formed which is used as an angular measure for the load angle or of fluctuations in the real power. The output signal .delta. is fed to an indicating device (5c) and/or to a control device (12) of a reactive power compensator (6).