Give priority to restoring the power infrastructure after the earthquake in Myanmar

After the earthquake in Myanmar, the restoration of power infrastructure should be given priority. At the same time, in combination with the long-term disaster prevention needs, the power distribution equipment needs to meet four core requirements: **rapid emergency response, seismic resilience, new energy compatibility, and environmental adaptability**. The following is a specific analysis:

 I. Emergency Restoration: Mobile and Temporary Equipment for Rapid Deployment

1. **Mobile Substations and Emergency Generator Vehicles**

   - **Demand Background**: The earthquake caused the power grids in Mandalay, Naypyidaw and other places to be paralyzed, and the power supply in cities such as Yangon was unstable, with an average daily power outage of more than 15 hours.

   - **Equipment Types**:

     - **Vehicle-mounted Mobile Substations**: Such as the modular substations used by Power China in the photovoltaic project in central Myanmar, which support rapid access to the power grid, and the output voltage ranges from 10kV to 35kV.

     - **Containerized Diesel Generators**: The single-unit capacity is 500kW - 2MW, equipped with an automatic switching device to meet the needs of frequent start and stop, such as the backup generators used by Myanmar port merchants in their factories in Yangon.

   - **Technical Key Points**:

     - Use shock-proof brackets and shock-absorbing bases to ensure stability during transportation and operation.

     - Integrate an intelligent monitoring system to support remote start and stop and fault diagnosis.

2. **Temporary Power Distribution Cabinets and Quick Connectors**

   - **Demand Background**: Temporary resettlement sites, hospitals and other places in the disaster area need to quickly set up a power supply system.

   - **Equipment Types**:

     - **Temporary Power Distribution Cabinets with IP65 Protection Level**: Support multi-circuit load distribution, and are equipped with residual current protection (RCD) and overvoltage protection.

     - **Prefabricated Cable Connectors**: Such as 3M cold shrink cable accessories, which can complete cable connection without professional tools, shortening the repair time.

   - **Case Reference**: The temporary power supply system used by the China Blue Sky Rescue Team in Mandalay connected the generator to the medical equipment through quick connectors.

II. Long-term Reconstruction: Fixed Power Distribution Equipment with High Seismic Performance

1. **Seismic Power Distribution Cabinets and Transformers**

   - **Demand Background**: The seismic standards of buildings in Myanmar are lagging behind. The magnitude 7.9 earthquake caused a large number of substations to be damaged, such as the main structure of the substation near the Sagaing Bridge in Mandalay being broken.

   - **Technical Solutions**:

     - **Structural Design**:

       - The cabinet body adopts an H-shaped steel frame + reinforcing rib structure, and the seismic intensity reaches level 9 (GB 50260-2013 standard).

       - The busbars are made of copper-nickel alloy material to enhance the anti-deformation ability.

     - **Component Selection**:

       - Key components such as circuit breakers and contactors pass the IEC 60068-2-6 seismic test (sweeping frequency range 5-500Hz, acceleration 20g).

       - The transformer adopts a corrugated oil tank design, and the oil conservator is eliminated to reduce the risk of oil leakage during an earthquake.

   - **Case Reference**: The patented technology of "seismic substation structure" of Yunnan Shujie Electric Power improves the equipment stability through the isolation layer and damping blocks.

2. **Smart Grid Equipment and Microgrid Systems**

   - **Demand Background**: Myanmar plans to make new energy account for 39% of the total by 2030, but the power coverage rate in rural areas is only 34%.

   - **Equipment Types**:

     - **Smart Power Distribution Cabinets**: Integrate MPPT controllers, energy storage interfaces and Internet of Things modules, and support the grid connection of photovoltaic and wind power, such as the intelligent monitoring system of Jingrong Photovoltaic Power Station of Power China.

     - **Off-grid Microgrid Equipment**:

       - Photovoltaic + Energy Storage System: Such as the 10kW photovoltaic power station deployed by SPIC in Kachin State, equipped with lithium iron phosphate battery energy storage to meet the electricity needs of 50 households.

       - Hybrid Energy Controller: Supports the coordinated operation of diesel generators, wind turbines and energy storage.

   - **Technical Key Points**:

     - Adopt a DC microgrid architecture to reduce AC/DC conversion losses and improve energy utilization efficiency.

     - Configure an island protection device to ensure stability during off-grid operation.

 III. Environmental Adaptability: Dealing with High Temperature, Humidity and Dust

1. **Heat Dissipation and Moisture-proof Design**

   - **Demand Background**: The average annual temperature in Myanmar is 22-32°C, and the humidity in coastal areas exceeds 80%, which is likely to cause condensation inside the equipment.

   - **Solutions**:

     - **Forced Air Cooling System**: Axial fans are installed on the top of the cabinet body, and in combination with the bottom air inlets, a convective heat dissipation channel is formed.

     - **Moisture-proof Coating**: Spray nano-moisture-proof paint, such as 3M Scotchcast 1600, on the internal busbars and terminal blocks.

     - **Humidity Sensor**: Monitor the humidity inside the cabinet in real time and automatically start the heating and dehumidification function.

2. **Dust-proof and Anti-salt Spray Design**

   - **Demand Background**: Inland areas such as Mandalay have serious dust problems, and coastal cities such as Yangon have the risk of salt spray corrosion.

   - **Solutions**:

     - **IP65 Protection Level**: The cabinet body uses double-layer sealing strips, and the incoming line holes are equipped with dust plugs.

     - **Anti-corrosion Materials**: The outer shell uses 316L stainless steel or galvalume steel plate, and the internal components are plated with nickel-phosphorus alloy.

   - **Case Reference**: The outdoor power distribution cabinet used by Trina Solar in the Taungdawgwin photovoltaic project in Myanmar resists dust through the IP65 design.

 IV. Certification and Compliance: Combining Localization and International Standards

1. **International Certifications**

   - **IEC 61439**: Low-voltage switchgear assemblies need to pass the short-circuit withstand current test (≥50kA).

   - **CE Certification**: If the equipment is exported to the European Union, it needs to comply with the EMC and LVD directives.

   - **CB Certification**: Certified through the IECEE system, which is convenient for entering the Southeast Asian market.

2. **Local Compliance**

   - **PTD Certification**: Telecommunication equipment needs to pass the certification of the Ministry of Posts and Telecommunications of Myanmar, such as communication modules and smart meters.

   - **SABS Certification**: Some projects may require compliance with South African standards, such as low-voltage cables.

   - **PROLER Plan**: Renewable energy projects need to give priority to purchasing locally assembled equipment, such as the cabinet production line established by Power China in Myanmar.

 V. Suppliers and Implementation Strategies

1. **Cooperation between International Brands and Chinese Enterprises**

   - **Core Components**: Adopt ABB Emax 2 circuit breakers and Schneider NSX series contactors to ensure reliability.

   - **System Integration**: Cooperate with enterprises such as Power China and Wangbian Electric, and make use of their project experience in Myanmar (such as Jingrong Photovoltaic Power Station and the plateau-type transformer of Yunbian Electric).

2. **Localized Manufacturing and Training**

   - **Assembly Factories**: Set up cabinet assembly lines in Yangon and Mandalay to reduce transportation costs, such as the localized production of medium-voltage substations in the rural electrification project supported by the Asian Development Bank.

   - **Technical Training**: Provide equipment maintenance training for local electricians to ensure long-term operation, such as the operation training of the photovoltaic system provided by Power China for Myanmar employees.

Conclusion: Equipment List and Priorities

Through the combined application of the above equipment, the **rapid restoration, resilience improvement and sustainable development** of the power system in Myanmar after the earthquake can be achieved.