The world's first distributed photovoltaic virtual synchronous generator is in Tianjin

Recently, the world's first set of kW-level distributed photovoltaic virtual synchronous generator was successfully connected to the microgrid of the smart business hall of the Sino-Singapore Tianjin Eco-City, which is the world's first successful case
of applying virtual synchronous generator technology to practical engineering.

In the microgrid control room of the Eco-City's smart business hall, the 15kW distributed photovoltaic virtual synchronous generator developed by the China Electric Power Research Institute has been installed and put into operation
.
Compared with traditional photovoltaic inverters, the photovoltaic virtual synchronous machine is smaller in appearance, but its functions have achieved a qualitative leap
.
Through the application of virtual synchronous machine technology, it has the inertia, damping characteristics, active frequency regulation, reactive voltage regulation and other out-of-operation characteristics of synchronous unit grid-connected operation, and can realize three functions such as inertial power, independent active control and autonomous voltage regulation control, which will significantly improve the smoothness and operation stability of the distributed power supply and off-grid process, and promote the friendly access and consumption
of clean energy.

Virtual synchronous generator can make clean energy grid-connected power electronic devices have the similar active frequency regulation, reactive power regulation and inertial damping characteristics of synchronous generators, which can automatically maintain the synchronous operation of clean power supply with the power grid and improve the security of large-scale access to the power grid, which is an important technology
for building a global energy ecology, promoting regional energy interconnection, realizing clean energy consumption, and realizing the balance between supply and demand 。 State Grid Corporation of China listed "virtual synchronous machine technology" in the "Ten Key Scientific and Technological Innovation Projects", and led by the China Electric Power Research Institute, State Grid Tianjin Electric Power and State Grid Zhejiang Electric Power jointly undertook the 2016 headquarters science and technology project "Virtual synchronous motor application technology research in distribution network", aiming to study and solve the key technology of virtual synchronous motor access to distribution network, and build a virtual synchronous motor multi-point access distribution system demonstration project
。 Since the voltage and frequency of distribution network and microgrid are prone to fluctuation and flicker, virtual synchronous machine technology will have a very significant effect in distributed applications, and has been proved to be one of the effective means to reduce the pressure of
distribution network control and realize large-scale distributed power consumption.

According to the relevant personnel of State Grid Tianjin Electric Power, the microgrid in the smart business hall of the Eco-City completed the 15kW distributed photovoltaic virtual synchronous machine to realize the world's first distributed application of virtual synchronous machine, which is of great
significance.