66 kv Vehicle Mounted Mobile Substation

Hengfengyou Transformer: 66kV Vehicle‑Mounted Mobile Substation Solution

I. Product Overview

Hengfengyou 66kV series vehicle-mounted mobile substation (50-66-69kV) is an integrated combined substation equipment that integrates primary and secondary electrical equipment and a heavy-duty load-bearing chassis. It integrates high and low voltage switchgear, high-voltage power transformers, protection, communication, power supply and other devices to realize integrated substation and distribution, and provide reliable power supply rapidly. The whole substation can be fully customized according to user requirements.

Benefiting from strong emergency response capability, the global demand for vehicle-mounted mobile substations keeps increasing year by year, and the power transmission and operation rate of mobile substations is also rising continuously, showing a broad market prospect.

Our 66kV mobile substations have been sold and operated reliably in many markets and regions including South Africa, Tanzania, Ethiopia, Nigeria, Uzbekistan, Kazakhstan, Iran, UAE, Saudi Arabia, Iraq, Türkiye, Egypt, the United States, Canada, Mexico, Brazil, Ecuador, etc.

Typical Applications

• Natural disaster emergency repair and power recovery
• Conventional substation equipment maintenance, renovation and upgrading
• Major engineering construction power support
• Temporary power supply for peak load, events and key projects

II. Product Advantages

• 15 years of independent R&D, manufacturing and global sales experience
• Strong production capacity: 30 sets/year for voltage level below 132kV; 120 sets/year for voltage level below 35kV
• Mature application verification: 35kV/110kV vehicle-mounted mobile transformers have been widely and reliably operated in domestic and international markets
• Finite element analysis adopted for vehicle chassis strength calculation to ensure stability of mounted electrical equipment
• Optimized layout and load balancing design for perfect integration with vehicle chassis, enhancing transportation safety and reliability
• All-weather environmental adaptability: high humidity resistance, heavy salt-fog resistance, high temperature resistance, sand & dust resistance
• Full customization: voltage, capacity, interface, function and appearance can be customized according to customer requirements

III. Technical Parameters

• Rated Voltage: 50kV / 66kV / 69kV
• Structure: Vehicle-mounted integrated modular
• Chassis: Heavy-duty semi-trailer with finite element optimization
• Environment: -40℃ to +50℃; high humidity, salt spray, sand/dust resistant
• Standards: IEC, GB, ANSI/IEEE, customer-specified standards
• Customization: Fully customizable according to user requirements

IV. Design, Installation & Commissioning Scheme

1. Integrated & Modular Design

• Integrated layout of transformer compartment, GIS/HGIS switchgear, control room and auxiliary system
• Modular design for fast assembly, disassembly and transportation
• Compact structure, small footprint, no complicated civil construction required
• Optimized weight distribution for safe highway and sea transportation

2. Transportation & Installation Requirements

• Special hydraulic axle trucks for highway transportation (total weight ≤ 80 tons)
• Container transportation complies with ISO 1496 international standards
• Installation site: foundation bearing capacity ≥ 150kPa, inclination < 0.5°
• Fast cable connection and reliable grounding system

3. Protection & Intelligent Control

• Complete relay protection system: differential, overcurrent, zero-sequence, non-electricity protection
• Standard SCADA monitoring system
• DGA online oil chromatography monitoring
• Lightning protection, overvoltage protection and temperature control system
• Supports IEC61850 communication protocol for remote monitoring

V. Operation & Maintenance

• Mobile and reusable, suitable for multi-scene and multi-cycle application
• Low operation and maintenance cost, no civil engineering investment
• Daily maintenance: transformer oil test, equipment sealing inspection, cooling system cleaning
• Remote fault diagnosis and automatic alarm to reduce on-site workload
• Full life cycle technical support and upgrade service

VI. Core Specification Summary

VII. Summary

Hengfengyou 66kV vehicle-mounted mobile substation is a medium-voltage, high-reliability, fast-deployment, modular mobile power supply solution. With 15 years of R&D and manufacturing experience, optimized vehicle chassis, all-weather environmental adaptability and intelligent monitoring system, it is widely used in emergency power repair, substation renovation, industrial engineering support and overseas infrastructure fields.

The products have been successfully applied in more than 20 countries across Africa, Central Asia, Middle East and Americas, helping users improve power supply reliability, emergency response capacity and grid operation efficiency.

VIII. 66 kv Vehicle Mounted Mobile Substation FAQ

Q1: What are the core components of a 66kV vehicle-mounted mobile substation?

• High-voltage unit: 66kV GIS/HGIS switchgear
• Transformer unit: 66kV oil-immersed power transformer
• Auxiliary systems: intelligent protection control cabinet, fire protection system, temperature control device
• Structural carrier: heavy-duty semi-trailer or modular container group

Q2: What are the typical application scenarios of 66kV mobile substations?

• Urban power grid: load transfer during substation renovation
• Industrial application: temporary power supply for large-scale petrochemical/metallurgical projects
• Disaster relief: rapid reconstruction of power grid after earthquakes and floods (72-hour emergency response)
• Overseas projects: power infrastructure construction under the Belt and Road Initiative

Q3: What are the advantages compared to fixed substations?

• Deployment time: 3–7 days (vs. 12–24 months for fixed)
• Investment cost: ~RMB 8–20 million (vs. RMB 50 million+ for fixed)
• Land demand: only 30×15m (vs. permanent land acquisition for fixed)
• Reuse rate: recyclable 5–8 times (vs. fixed and immovable)

Q4: What are the special transportation and deployment requirements?

• Highway transportation: hydraulic axle trucks (total weight ≤ 80 tons)
• Shipping standard: containers comply with ISO 1496
• Positioning: foundation bearing capacity ≥ 150kPa, inclination < 0.5°

Q5: How long does it take to put into operation?

• Regular deployment: 3–7 days (including debugging)
• Emergency mode: put into operation within 48 hours (pre-assembled and pre-tested)

Q6: What functions does the intelligent monitoring system provide?

• Real-time monitoring: DGA online oil chromatography analysis
• Warning: hot-spot temperature over-limit alarm (accuracy ±1℃)
• Remote access: supports IEC61850 communication protocol
• Standard SCADA system for integrated monitoring and control