FIELD: electrical engineering.
SUBSTANCE: method consists in balancing post-emergency modes in the separated parts of the network by means of anti-emergency restriction of unacceptable frequency and voltage deviations. Differences in the frequencies, modules and phases of voltage vectors are measured on both sides of the switching apparatuses connecting the synchronised parts of the electrical network. If the differences comply with the conditions for acceptability, the switching apparatuses are activated. After synchronisation, a transition is made from regulating the frequency and voltage on the generators to regulating the cross-sectional crossflow. According to the method, a coordinated linear periodic low-frequency change in the voltage and frequency is created on the generators of the divided network parts with a different frequency for each separated part. After the switching apparatuses are activated, a transition to parallel operation of parts of the network is recorded by the fact of a decrease in the dependence of changes in frequency on changes in the power output from the generators. The periodic low-frequency change in the power and voltage of the generator is stopped.
EFFECT: provided are automatic synchronisation and restoration of the normal mode of parallel operation of divided parts of an electrical network with operating generators connected to the network on remote switching apparatuses.
1 cl, 2 dwg
