Solusyon sa Aplikasyon para sa Compact Substations sa Urban Power Grids

Bilang isang mahalagang komponente ng modernong mga sistema ng kuryente, ang mga kompak na substation ay naging pangunahing kagamitan para sa pag-upgrade at pagbabago ng grid sa lungsod dahil sa kanilang mga abilidad tulad ng pre-fabrication sa pabrika, madaling pag-install, maliit na sukat, ligtas, at maasahan. Sa pagbilis ng urbanisasyon, ang mga kompak na substation ay umuunlad mula sa tradisyonal na mga kagamitan ng distribusyon patungo sa mga green, smart energy nodes sa pamamagitan ng pag-integrate ng renewable energy, energy storage systems, at intelligent monitoring technologies. Batay sa pinakabagong teknikal na specifications at pag-analisa ng application scenario, ang solusyong ito ay nagpopropona ng mapagkaisahang configuration at intelligent transformation strategies para sa mga kompak na substation sa urban grid, na may layuning palakasin ang kalidad ng supply ng kuryente, bawasan ang operational costs, at promosyon ng low-carbon grid development.

1. Analisis ng Teknikal na Katangian at Abilidad ng Mga Kompak na Substation

1.1 Puso ng Design Philosophy
Gumagamit ng buong saradong, modular design, na nag-iintegrate ng high-voltage switchgear, distribution transformers, at low-voltage distribution devices sa loob ng iisang enclosure, na nagpapahiwatig ng "factory prefabrication + on-site assembly" model. Ayon sa 2025 General Technical Specifications for Compact Substations, ang lebel ng proteksyon ng enclosure ay ≥IP55, na kayang tumanggap ng harsh environments tulad ng salt spray.

1.2 Anim na Puso ng Abilidad

• Maliit na Cycle ng Konstruksyon:Ang pag-install hanggang sa commissioning ay nangangailangan lamang ng 5-8 araw, na nagbabawas ng investment sa 40%-50% kumpara sa conventional substations.
• Pag-iipon ng Espasyo:Isang 4000kVA kompak na substation ay nangangailangan lamang ng ≤300 m², na tanging 1/10th ang area ng conventional substation.
• Matataas na Kaligtasan:Buong saradong insulasyon structure na walang exposed live parts, na nagpapatupad ng "zero electric shock accidents".
• Malakas na Automation:Suportado ang "Four Tele" functions (Telemetry, Teleindication, Telecontrol, Teleregulation), na sumasagot sa unmanned operation requirements.
• Flexible Configuration:Modular design na lumalapat sa iba't ibang urban grid scenarios.
• Kaya-kaya na Maintenance:Standardized components na sumusuporta sa mabilis na replacement, na nagpapakikitil ng outage time.

1.3 Klase ng Teknikal na Structure

2. Karaniwang Urban Grid Application Scenarios at Configuration Plans

2.1 Scenario ng Residential Area

• Case:Residential complex (24,000 m², 398 households), distribution transformer capacity 630kVA.
• Configuration Recommendations:

• Uri:500-1000kVA, IP55 protection.
• Landscape Design:Enclosure na may advertising lightbox panels, rooftop PV installation.
• Reactive Power Compensation:Configured sa 40%-50% ng capacity, 10-loop automatic compensation device.
• Low-Voltage Outgoing Lines:15-25 loops (including 1-3 spares).

2.2 Scenario ng Commercial Center

• Case:Shopping mall (109,000 m² complex), gumagamit ng eco-friendly gas-insulated ring main unit (RMU).
• Configuration Recommendations:

• Capacity:1250-2000kVA, ring-main type connection.
• Intelligent Monitoring:5G network slicing + SM4/SM2 encryption, supports AI equipment status analysis.
• Reactive Power Compensation:Configured sa 50%-60% ng capacity, 20-30 loop power supply system.

2.3 Scenario ng Industrial Park

• Case:Parking lot charging station, gumagamit ng 1250kVA ring-main type compact substation.
• Configuration Recommendations:

• Capacity:800-2000kVA.
• Energy Storage Integration:15%-20% ng main transformer capacity, inirerekomendang 6.25MWh liquid-cooled energy storage system.
• Protection Requirements:Enclosure na may lifting mechanism upang matiyak na walang deformation sa transport/installation.

2.4 Paghahambing ng Key Parameters sa Tres Scenarios

3. Economic Benefit Analysis

3.1 Investment Cost Savings:

• Halimbawa: 35kV single-transformer substation, 4000kVA scale:
• Compact substation saves over 1 million yuan compared to conventional substation;
• Saves approximately 2700 square meters of land area.

3.2 Operation & Maintenance Cost Reduction:

• Adoption of advanced technologies like oil-free equipment enables condition-based maintenance, saving approx. 100,000 yuan annually in O&M costs.

3.3 Integrated Solution Economics (2025 Trend):

• Falling energy storage technology costs (system cost ≤0.6 yuan / Wh):
• "PV + Compact Substation + Energy Storage" solution can shorten the investment payback period to within 8 years.

Key Data Table

4. Compact Substation Implementation Scenarios

4.1 Priority in New Construction:

• Prioritize the use of compact substations in new residential complexes, commercial centers, and industrial parks, leveraging their small footprint and easy installation advantages.

4.2 Urban Grid Renovation and Replacement:

• Gradually replace traditional substations with compact substations in urban grid upgrade projects to enhance grid flexibility and reliability.

4.3 Zero-Carbon Pilot Exploration and Innovation:

• Implement integrated solutions combining PV + Energy Storage + Compact Substation.