Automatic synchronized grid-connected requires that voltage difference, frequency
difference and phase angle difference between power network and generator are all in the …

When large power supply system becomes isolated after fault occurred, the best method is
finding a suitable grid-connected point to connect with external power system to maintain …

Owing to the growth in penetration of DGs (distributed generators), inverters installed
together with the DGs have been increasing rapidly. In general, these grid-connected …

The unified time synchronization system plays an extremely important role in quickly and
accurately analyzing and judging the causes of power grid faults, supporting power grid …

Due to the power characteristics of renewable energy units such as wind power and
photovoltaics, and the commutation characteristics of inverter power sources such as DC …

With the continuous development of distributed power supply, its use in the power system is
more and more, which makes the power system more and more vulnerable to power …

Power grid synchronization is a critical aspect of icing the stability and trust-ability of the
electrical grid. The proper functioning of power grids relies on the synchronization of …

Grid synchronization is one of the key issues for distributed power generation system. In
recent years, an increasing number of new energy generation systems are connected to the …

With the increasing number of power electronic devices and renewable energy units in the
power network, wide frequency oscillation accidents occur frequently in China and abroad …

Automatic synchronizers are widely employed to connect synchronous generators to power
system. The core task of a synchronizer is to estimate the voltage magnitude, frequency and …