Brochure · EN — Nine-page Siemens Energy overview deck (CIGRE Paris Session 2024, © Siemens Energy 2024) introducing MVDC PLUS®, a medium-voltage direct-current transmission solution for future grids. It frames the grid challenges driven by decentralization and renewables (omnidirectional energy flows that require control), positions DC against AC for power transfer, states the MVDC PLUS system parameters printed on the AC–DC–AC diagram (30…150 kVac AC connection, ±24…50 kVdc DC link, 30…150 MW), lists the four main components (converter tower with IGBT, measuring device and charging, control and protection, cooling), and notes that MVDC PLUS is based on HVDC PLUS® technology, standardized for different type rates. Honest-thin note: beyond the diagram values on page 6 the document contains no detailed ratings table (no losses, dimensions, availability or standards data).
The deck opens with the guiding question "How to improve power transfer in future grids?" and maps the challenges onto an industrial-landscape illustration (p. 3): Power transfer changes — which challenges do we face?; Bridge the distance — how should we connect islands, platforms, and remote areas?; Connecting weak or unstable grids — how will we integrate and stabilize grids?; Reduce footprint — what's the best way to make network upgrades with little visual impact?; Increase power infeed — how can we enhance existing infrastructure?; Obtain transmission autonomy in power ranges up to 150 MW — how will we fulfil the enhanced tasks as a DSO?; and Underlying technology — how does it work?
Past: unidirectional energy flow HV → MV → LV via alternating current (AC), from the high-voltage transmission network ≥ 220 kV through the regional sub-transmission network 110 kV and the medium-voltage distribution network ≤ 33 kV down to the low-voltage level ≤ 1 kV (p. 5).
Future: omnidirectional energy flows that require control — the diagram crosses out central generation and adds wind, hydro and solar infeed at the sub-transmission and distribution levels, with the annotation "Distance increases" spanning the whole chain (p. 5).
The AC–DC–AC system diagram (p. 6) shows an AC network at 30…150 kVac feeding a converter station, a bipolar DC link at +24…50 kVdc / -24…50 kVdc carrying 30…150 MW, and a second converter station feeding the receiving AC network at 30…150 kVac.
Alternating current is characterized as: simple design; robust and reliable technology; simple, can be applied without power electronics; easy integration into existing transmission networks (p. 6).
Direct current is characterized as: power transmission over long distances; seamless control of the active power flow; facilitates connection of asynchronous grids or grids with different grounding schemes; reactive power compensation through converter stations; same power transfer at lower voltage level possible; low contribution to short-circuit currents (p. 6).
| Parameter | Value (as printed on the system diagram, p. 6) |
|---|---|
| AC connection voltage (both sides) | 30…150 kVac |
| DC link voltage (bipolar) | +24…50 kVdc / -24…50 kVdc |
| Transmission power | 30…150 MW |
A rendered converter-station view (p. 7) labels the four main components: 1 — converter tower with IGBT; 2 — measuring device and charging; 3 — control and protection; 4 — cooling.
MVDC PLUS® is based on HVDC PLUS® technology and standardized for different type rates with positive impacts on costs and execution time (p. 7).
The deck carries the tagline "MVDC PLUS® — Managing the future grid" (pp. 1, 4) and every page footer reads "CIGRE Paris Session 2024" and "Unrestricted © Siemens Energy, 2024"; "Siemens Energy is a trademark licensed by Siemens AG." Published by Siemens Energy, Technical Sales & Marketing FACTS, Siemenspromenade 11, 91058 Erlangen; e-mail [email protected]; www.siemens-energy.com (p. 8).
Disclaimer (p. 9): © Siemens Energy 2024. Subject to changes and errors; the information given in this document only contains general descriptions and/or performance features that may not always specifically reflect those described, or which may undergo modification in the course of further development of the products; the requested performance features are binding only when they are expressly agreed upon in the concluded contract.
Honest-thin note: the document is a market-facing overview — apart from the system-diagram values on p. 6 it publishes no ratings table (no losses, efficiency, dimensions, weights, availability, or standards compliance data). No such values have been added here.
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