Solusyon sa Aplikasyon para sa Makompaktong Substation sa Urban Power Grids

Isipagong komponente sa modernong sistema ng kuryente, ang mga compact substation ay naging pangunahing kagamitan para sa pag-upgrade at pagbabago ng grid sa lungsod dahil sa kanilang mga abilidad tulad ng prefabrication sa factory, madaling pag-install, maliit na sukat, seguridad, at reliabilidad. Sa kasagsagan ng urbanisasyon, ang mga compact substation ay umuunlad mula sa tradisyunal na kagamitan para sa distribution hanggang sa maging green at smart energy nodes sa pamamagitan ng pagsasama ng renewable energy, energy storage systems, at intelligent monitoring technologies. Batay sa pinakabagong teknikal na specifications at pag-analisa ng application scenario, ang solusyon na ito ay nagpopropona ng makatwirang configuration at intelligent transformation strategies para sa mga compact substation sa urban grids, may layuning mapataas ang kalidad ng power supply, bawasan ang operational costs, at mapromote ang low-carbon grid development.

1. Analisis ng Teknikal na Katangian at Abilidad ng Compact Substations

1.1 Puso ng Design Philosophy
Gumagamit ng buong saradong, modular design, na nag-uugnay ng high-voltage switchgear, distribution transformers, at low-voltage distribution devices sa isang enclosure, na nagkakamit ng "prefabrication sa factory + on-site assembly" model. Ayon sa 2025 General Technical Specifications for Compact Substations, ang protection level ng enclosure ay ≥IP55, na kayang tanggulan ang mahigpit na kapaligiran tulad ng salt spray.

1.2 Anim na Puso ng Abilidad

• Maliit na Construction Cycle:Ang installation hanggang commissioning ay nangangailangan lamang ng 5-8 araw, na nagbabawas ng investment sa 40%-50% kumpara sa conventional substations.
• Pag-iipon ng Espasyo:Ang 4000kVA compact substation ay nangangailangan lang ng ≤300 m², na tanging 1/10th ang area ng conventional substation.
• Matataas na Seguridad:Buong saradong insulation structure na walang exposed live parts, na nagpapahiwatig ng "zero electric shock accidents".
• Mahigpit na Automation:Suportado ang "Four Tele" functions (Telemetry, Teleindication, Telecontrol, Teleregulation), na sumasaklaw sa unmanned operation requirements.
• Handal na Configuration:Modular design na sumasang-ayon sa iba't ibang urban grid scenarios.
• Madaling Maintenance:Standardized components na sumusuporta sa mabilis na replacement, na nagpapaliit ng outage time.

1.3 Klasipikasyon ng Teknikal na Structure

2. Typical Urban Grid Application Scenarios and Configuration Plans

2.1 Residential Area Scenario

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

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

2.2 Commercial Center Scenario

• Case:Shopping mall (109,000 m² complex), using 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 at 50%-60% of capacity, 20-30 loop power supply system.

2.3 Industrial Park Scenario

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

• Capacity:800-2000kVA.
• Energy Storage Integration:15%-20% of main transformer capacity, recommended 6.25MWh liquid-cooled energy storage system.
• Protection Requirements:Enclosure equipped with lifting mechanism to ensure no deformation during transport/installation.

2.4 Comparison of Key Parameters Across Three Scenarios

3. Economic Benefit Analysis

3.1 Investment Cost Savings:

• Example: 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.