By providing extensive power quality control,
MVDC grids ensure that sensitive industries receive
the stable and high-quality power they need to
function optimally.5 Improving power quality of
MVAC distribution systems
In some cases, MVDC systems can improve the
power quality and overall stability existing
MVAC grids.
Similarly, MVDC voltage conversion devices use
much less copper and steel than conventional AC
transformers: estimates suggest that requires
25 000 tons material per gigavolt-amperes
(GVA), while MVDC requires only 500 tons [27]. MVDC grids provide
a more flexible, efficient solution, offering extended
coverage while minimizing the need for new, costly
infrastructure. MVDC cable line requires
approximately half the copper, aluminium and
steel cable line the same capacity.
A CIGRE survey power system operators
around the world [30] found that the primary
drivers for MVDC development and deployment
include growth renewable energy connections,
. MVDC grids can also connect
disparate networks including local renewable
energy networks and isolated grids thereby
improving overall power distribution efficiency.
These estimates suggest that such growth will
occur across all global markets, with slightly
faster growth Europe due the commitments
of European governments toward the energy
transition.
3.3 The market for MVDC systems
The market for power technology general
is very large: the global power distribution
technology market was valued approximately
USD billion 2023 and expected grow at
a compound annual growth rate (CAGR) around
8% reach USD billion 2030 [28], [29].2. While such studies did not distinguish
MVDC from the broader “DC distribution” category,
MVDC applications will likely constitute significant
portion this demand.
MVDC grids can directly interface with LVDC and
HVDC systems via DC-DC converter, eliminating
the need for intermediary grid links.2.6 Improving sustainability of
infrastructure
Given their greater carrying capacity, MVDC-based
power systems require less raw material than their
AC counterparts.
MVDC systems can also deliver customized power
supplies for specific high-power loads with
strict requirements for reliability and power quality. cities
grow, building new power lines and substations
becomes increasingly difficult.
3.27
The MVDC grid
MVDC systems also extend the reach urban
power supplies more effectively than systems,
covering wider area for the same voltage drop. They can help isolate voltage drops,
suppress harmonic distortions, and compensate
for reactive power issues.
3.2. These improvements are
especially important for hospitals, data centres,
and semiconductor factories, and other sensitive
loads that require highly stable and reliable
power supply.4 Linking different grids and
ensuring flexibility
Unlike systems, MVDC grids operate
asynchronously; they not depend matching
the phase and frequency existing grid,
which simplifies their integration into both and
DC systems.
3.
Various market factors are expected drive
the commercial uptake MVDC technologies.
As result, MVDC grids offer greater flexibility in
linking diverse grid types without requiring complex
synchronization. This
reduces conversion stages and enhances overall
system reliability.
This key advantage urban expansion, where
land often scarce and expensive
