Powering the Modern Grid
End-to-end power equipment solutions for utility transmission and distribution networks. From bulk power transformers to smart grid integration, we deliver reliability at scale.
Global Utility Grid Landscape
Annual grid infrastructure investment worldwide through 2030
of grid infrastructure in developed markets is over 25 years old
Renewable energy capacity targeted for 2030 global installation
Global utility networks face unprecedented transformation. Aging infrastructure requires modernization while integrating distributed energy resources (DER), electric vehicles, and renewable generation. This convergence demands smarter, more flexible power equipment capable of bidirectional power flow and real-time grid management.
Key Challenges Facing Modern Grids
Load Growth & Peak Demand
Electrification of transportation, heating, and industrial processes is driving unprecedented demand growth. Grid operators must plan for 30-50% load increases while maintaining service reliability.
Infrastructure Modernization
Much of the existing grid equipment predates modern digital requirements. Aging transformers, switchgear, and protection systems need replacement with smart, communicative equipment.
DER Integration
Distributed energy resources—solar, wind, battery storage, and EVs—require bidirectional power flow capabilities. The grid must evolve from passive distribution to active network management.
Regulatory Compliance
Grid codes are tightening worldwide. Equipment must meet evolving standards for efficiency, environmental impact, cybersecurity, and interoperability with smart grid systems.
Our Utility Power Solutions
Transformer Solutions
- • S11-M — Oil-filled distribution transformers (50-2500 kVA)
- ? S13-M ? Low-loss distribution transformer (100-5000 kVA)
- • S22-M — Premium efficiency substation transformers (5-60 MVA)
- • Auto-transformers — For voltage regulation
Compact Substations
- • Kiosk Substations — Pole-mounted compact units
- • Pad-mounted — Underground cable termination
- • Modular Prefab — Quick deployment solutions
- • Integration-ready — Smart grid pre-wired
Medium Voltage Switchgear
- • RMU — Ring main units (12-36 kV)
- • SF6-Free — Eco-friendly alternative
- ? Solid Insulation ? epoxy resin switchgear
- ? Smart RMU ? remote control and monitoring
Instrument Transformers
- • CTs — Current transformers (0.5-5000 A)
- • PTs/VTs — Voltage transformers
- ? Combined ? electronic instrument transformer
- • Protection Class — TPZ/TPY accuracy
Protection & Control
- • Relay Panels — Numerical protection
- • Bay Controllers — Integrated control
- ? SCADA Integration ? remote monitoring
- • IEC 61850 — Digital communication
Reactive Power Solutions
- • Shunt Reactors — Voltage control
- • Capacitor Banks — Power factor correction
- • SVC — Static varcompensators
- ? Harmonic Filtering ? harmonic mitigation
Product Showcase
Distribution Transformer
50-2500 kVA →
Energy-Efficient
Low Loss Design →
Substation Transformer
5-60 MVA →
Ring Main Unit
12-36 kV →
Current Transformers
0.5-5000 A →
Voltage Transformers
Up to 36 kV →
Compact Unit
Quick Deploy →
Reactive Compensation
Voltage Control →
Technical Specifications
| Parameter | Specification |
|---|---|
| Voltage Class | Up to 36 kV (IEEE), 40.5 kV (IEC) |
| Power Rating | 50 kVA – 60 MVA |
| Frequency | 50/60 Hz (customizable) |
| Cooling Method | ONAN/ONAF/OFAF (oil), AN/AF (dry-type) |
| Insulation Class | A/E/B/F/H (IEC 60085) |
| Ambient Temperature | -50°C to +55°C (custom options) |
| Altitude | Up to 3000m (derating above 1000m) |
| Noise Level | ≤65 dB(A) at 1m (EN 60076-10) |
Standards & Compliance
IEC Standards
- • IEC 60076 — Power Transformers
- • IEC 62271 — High-voltage Switchgear
- • IEC 61850 — Communication Networks
- • IEC 60044 — Instrument Transformers
- • IEC 60076-10 — Noise Measurement
ANSI/IEEE Standards
- • ANSI C57.12 — Distribution Transformers
- • ANSI C57.12.80 — Terminal Markings
- • IEEE C57.12.20 — Oil Transformers
- • IEEE 693 — Seismic Requirements
- • IEEE 1547 — DER Interconnection
Quality & Environment
- • ISO 9001 — Quality Management
- • ISO 14001 — Environmental Management
- • ISO 45001 — Occupational Health
- • RoHS Compliant
- • REACH Registered
Case Study: Gulf Region Substation Upgrade
200 MVA Substation Modernization — Saudi Arabia
Ziyao Power supplied a complete substation package for a major grid operator's transmission network upgrade in the Eastern Province. The project included two 200 MVA power transformers, associated switchgear, and integrated protection systems.
Transformer Rating
Voltage Ratio
Ambient Temp Rating
Delivery Cycle
Challenge
Extreme desert conditions (ambient up to 55°C), limited construction timeline, and requirement for seamless integration with existing SCADA system.
Solution
- • Custom forced-oil cooling for high-temperature operation
- • Corrosion-resistant enclosure (C5-M marine grade)
- • IEC 61850 compliant protection panels
- • Factory acceptance testing completed in China
Result
Successful commissioning 2 weeks ahead of schedule. Zero downtime during 6-month parallel operation. Equipment operating at full capacity with excellent thermal performance.
Why Choose Ziyao Power
Global Experience
Utility power engineering support with regional grid code and documentation experience.
Certified Excellence
ISO 9001, 14001, 45001. KEMA, ASTA, CE certifications. Third-party verification available.
Customization
In-house R&D. Modifications for extreme temperatures, altitude, seismic zones, and special grid codes.
Global Logistics
Worldwide shipping. Regional service hubs. Installation supervision and commissioning support.
Frequently Asked Questions
What is the typical lead time for utility transformers?
Standard lead times range from 8-14 weeks for distribution transformers (S11/S13 series), and 16-24 weeks for large power transformers (S22-M series above 10 MVA). Expedited manufacturing is available for critical projects.
Do you offer installation and commissioning support?
Yes. We provide on-site installation supervision, commissioning, and testing services globally. Our engineers can supervise energization and perform acceptance testing according to IEC and IEEE standards.
Can equipment be customized for extreme environments?
Absolutely. We regularly supply equipment for desert climates (up to 55°C ambient), high-altitude installations (up to 3000m), coastal areas (C5-M corrosion protection), and seismic zones. Custom thermal designs and enclosure specifications are available.
What warranty do you provide?
Standard warranty is 24 months from shipment or 18 months from commissioning, whichever comes first. Extended warranties up to 60 months are available for major power transformers with service agreements.
Are spare parts readily available?
Yes. We maintain inventory of critical spare parts including tap changers, bushings, gaskets, and control components at regional warehouses. Spare parts lists are provided with each equipment order.
How does Ziyao support smart grid integration?
Our equipment supports IEC 61850 communication protocol. MV switchgear includes remote monitoring and control capabilities. We provide integration technical support and can coordinate with your SCADA/system integrator for seamless connectivity.
What payment terms are available?
Standard terms are T/T 30% advance, 70% before shipment. Letter of credit (L/C) is accepted for established customers. Project financing considerations are available for large orders.
Do you provide engineering documentation?
Full documentation packages are provided including as-built drawings, test reports (routine and type), installation manuals, operation guides, and spare parts lists. PDF and hard copy formats available.
Ready to Power Your Grid?
Whether you need a single distribution transformer or a complete substation package, our engineering team is ready to help. Get a customized quote within 48 hours.