Technologia SST: Analyse Completus in Generatione Transmissione Distributione et Consumptione Electricitatis

I. Fundamenta Investigativa

Necessitates Transformationis Systematis Electricitatis

Mutationes in structura energetica maiora postulata faciunt ad systemata electricitatis. Systemata electricitatis traditionalia transibunt ad nova generationis systemata, cum differentia inter eos sequatur:

Ⅱ.Scenarii Core Applicationis Transformerum Solidarum (SST)

Sub fundamento novorum systematum electricitatis, supportus activus, regula integratio reticuli, interconnectio flexibilis, et interactio supply-demand facta sunt key requisites pro complemento spatiotemporalium energetica. SSTs permeant omnes stadios—generationis, transmissionis, distributionis, et consumtionis—cum specificis applicationibus sequentibus:

• Lateralis Generationis: Converters grid-tied direct-connected, apparatus formandi reticuli, transformers DC medium-voltage pro integratione venti, solis, et accumulationis.

• Lateralis Transmissionis: Transformers DC medium- et high-voltage, dispositiva interconnectionis DC flexibilis.

• Lateralis Distributionis: Unitates interconnectionis flexibilis medium- et low-voltage, transformers electronici potenti distributionis (PET) flexibilis, transformers DC pro transportatione electrificata.

• Lateralis Consumptionis: Supplies DC pro productione hydrogeni/aluminum, systemata charging direct-connected, fontes electricitatis data center direct-connected.

(1) Tractio Transituum Ferroviarium — 25kV Traction PETT

Systemata converterum basata super SST sunt apparationes core pro aedificando proxima generationis reticulis electricitatis.

Technologiae Clave Breakthrough:

• Topologia conversionis alta-isolationis alta-frequentialis et technologiae transformerum alta-potentiae alta-frequentialis

• Alta tensio (AC25kV direct connection) et alta insulatio sub design compacto (tensio sustinendi: 85kV/1min)

• Adaptatio ad environments impactus fortes et vibrationes, refrigeratio efficient phase-change

• Topologiae conversionis alta-frequentialis alta-efficientialis et technologiae driving, control modulationis alta-frequentialis cum commutatione lisa

Resultata Applicationis:

• Installata et testata super EMU 140 km/h anno 2020, outputting DC1800V

• Efficientia nominata 96.7% (2% superior quam systemata existentia), 20% incrementum densitatis potentiae

• Control totalis lateralis reticuli permittit filtrationem activam, compensationem reactive, inrush current magnetizationis nullam et sine lossis standby

• Productum primus mundi 25kV-SST ad effectum testing dynamicum vehicularis

(2) Supply Power Urban Rail — Multi-port Energy Router for Metro Systems

Design Core:
Structura quattuor portarum isolata supportans traction power, auxiliary power, energy storage, and PV integration.

Technologiae Clave:

• Topologia circuitus LLC full-bridge bini gradus basata super IGBTs

• Topologia circuitus DAB basata super SiC cum configuratione series-parallel DC

• Technologia soft-switching pro apparationibus potentiae (efficientia rami ≥98.5%)

• Transformer 12-pulsus communis connectus ad AC reticulum, eliminans currents circulares quando parallela cum rectificatoribus diode

Advantages Applicationis:

• Eliminat magnos line-frequency regenerative transformers; 26% minoris vestigii, reducens spatium installationis et costus constructionis

• Nulla losses no-load transformer, permitens refitting lines existentium

• Integrat rectification, feedback energy, reactive compensation, et harmonic filtering pro precise multi-port power flow control

(3) Charging & Battery Swap — 10kV Direct-Connected SST for EV Charging

Configuratio Systematis:

• Direct-connection medium-voltage 10kV, capacitas 1MVA: 1 module direct-charging + 2 modules networking shared-bus

• Configurata cum 300kW ultra-fast charging et sex 120kW fast chargers; compatibilis cum integratione PV-storage et connectione reticuli medium-voltage

Functiones Core:

• Integrat transformatores et modules charging; wide-range voltage regulation enables direct charging, efficientia systematis ≥97% (peak 98.3%)

• Praebet supportum reticuli et managementem qualitatis potentiae, enabling bidirectional V2G (vehicle-to-grid) and G2V (grid-to-vehicle) interaction

(4) Park Power Supply — Low-Carbon Park Energy Router (PV-Storage-Charging Integration)

Architectura Systematis:
Energy router direct-connected 10kV basata super SST, featuring AC10kV et DC750V ports, cum battery storage, DC charging interfaces, et DC protection devices on the output side.

Configuratio Core:
Cabinet SST 315kW, 976.12kWp PV, 0.5MW/1.3MWh energy storage, 10 DC charging stations.

Valorem Applicationis:

• Reduces electricity costs through PV generation and energy storage peak-shaving arbitrage

• Lowers station capacity demand, buffers grid impact, and offers excellent scalability

• Output-side "solid-state DC circuit breaker + disconnect switch" combination ensures fault isolation for storage and charging stations

(5) Renewable Energy Integration — DC/DC Energy Router for PV-to-Hydrogen

Parametri Core:

• Converter DC/DC isolated 5MW: input DC800–1500V, output DC0–850V, connected to hydrogen electrolyzer busbar

• Capacitas cabinet singuli: 3/6MVA, scalable ab 3–20MVA; tensio output adaptable ad DC0–1300V/2000V

Advantages Technologici:

• Reduces conversion stages compared to AC transmission; overall efficiency 96%–98%

• High-frequency isolated DC transformers with flexible series-parallel topologies, suitable for PV, storage, rail power, hydrogen/aluminum production

• Modular, configurable platform tailored to diverse industry-specific DC grid needs

(6) Optimizatio Reticuli Distributionis

Dispositivum Interconnectionis Flexibilis Medium- et Low-Voltage:

• Addresses load imbalance, rising distributed PV, EV charger expansion, and reliability enhancement

• Normal operation: asynchronous grid interconnection with active/reactive power flow control, improved renewable integration, and power quality isolation

• Fault condition: rapid isolation and automatic switchover to prevent outages

Systema Storage Energiae Direct-Connected 10kV:

• Medium/high-voltage grid connection reduces line losses

• Two-stage conversion enables wide-range voltage regulation

• Modular PCS and battery configuration

• More flexible capacity vs. cascaded H-bridge topology, ensuring battery insulation safety and full-chain power flow control

(7) Grid Connection on Generation Side — 10kV Direct-Connected Photovoltaic New Grid Interface

Characteristica Technica:

• High-frequency isolation + cascaded CHB main circuit topology

• Capacity: N×315kVA (scalable), output compatible with 1500V systems, efficiency >98.3%

Advantages Core:

• Medium-voltage direct connection with isolated DC-DC performing MPPT (Maximum Power Point Tracking) and isolation/voltage regulation

• Simplified two-stage architecture, highly efficient; responds directly to grid demands at 10kV level

• Applicable to industrial, commercial, and rural distributed PV scenarios

(8) Load Side — Data Center Power Supply Based on SST

Solution Direct-Connection 10kV:

• Potentia 2.5MW (315kW × 8), efficientia systematis 98.3%, using high-frequency isolated conversion

• DC ring network 400VDC on DC side

• Full PWM control achieves grid-side power factor >0.99, harmonics <3%

Future Outlook

Centered on AC/DC distribution networks, extending to renewables, transportation, power supply, energy management, and fault protection, SSTs enable an integrated system solution encompassing:

• Supply power AC/DC hybrid

• Integration source-grid-load-storage

• Optimized energy management and power flow dispatch
  Supporting the construction of next-generation power systems.

III. Application Challenges and Discussion

(1) Relay Protection Compatibility Challenge
Research is needed on the compatibility between power electronic transformers and traditional distribution systems, especially for short-circuit, ground, and open-circuit faults. Clear control strategies during fault ride-through and coordination mechanisms for relay protection must be established.

(2) Dispatch, Management, and Monitoring Integration Challenges
The widespread adoption of new power electronic equipment raises adaptation issues in dispatch and monitoring, requiring solutions to three core needs:

• Dispatch Rules & Market Mechanisms: The traditional “source-follows-load” logic cannot accommodate bidirectional “load-source-grid” interactions. Multi-directional power flow market mechanisms must be developed.

• Standardization & Interoperability: Diverse device interface protocols lead to poor interoperability among vendors. Standardized communication protocols and control command sets must be promoted.

• Cross-Regional Coordinated Dispatch: Flexible interconnection breaks traditional zoning boundaries. Unified responsibility allocation, reserve sharing, and cross-regional coordinated dispatch frameworks must be established.

These challenges require unified standards and monitoring execution mechanisms to resolve.