Vietnam communication base station inverter grid connection location

Why is ERAV proposing changes to the Vietnamese grid code?

To reflect the fact that this will cause substantial changes to the performance characteristics of the future Vietnamese power system, ERAV has proposed amendments to the Vietnamese Grid Code. These changes are considered necessary to ensure secure system operation of the future Vietnamese power system.

Does a grid-parallel PV-inverter system need a wiring code?

In most countries, there is a general “electric code” or “wiring code”, in which all relevant installation, earthing and protection aspects are specified. However, in many cases, the existing standards don’t cover PV-inverter systems specifically and require some additions in order to ensure safety of grid-parallel PV-inverter systems. 3.2.2.

What is the voltage range defined by the Vietnamese requirements?

The voltage range defined by the Vietnamese requirements is equal to 0.2. This is lower than in most synchronous areas of the ENTSO-E but larger than the voltage range of the Nordic system. Consequently, the Vietnamese requirements would not fit into the inner envelope according to Figure 4 for any of the five synchronous areas of the ENTSO-E.

Will synchronous generating systems be replaced by non-synchronous systems in Vietnam?

In Vietnam, as is the case for many other countries around the globe, it is expected that more and more synchronous generating systems will be replaced by non-synchronous generating systems in the near future.

Can a single phase inverter be used in a PV system?

Single phase installations are permitted for PV systems with a rated a.c. capacity of up to 5kVA. Up to 15kVA, PV installations can use single phase inverters with ratings up to 5kVA, which must be connected in a balanced manner over the three phases.