Mga Solusyon sa Aplikasyon para sa Mga Kompak na Substation sa mga Urban Power Grids

Bilang isang mahalagang komponente ng modernong sistema ng enerhiya, ang mga compact substation ay naging pangunahing kagamitan para sa pag-upgrade at pagbabago ng grid sa lungsod dahil sa kanilang mga abilidad na factory prefabrication, madaling pag-install, maliit na footprint, seguridad, at reliabilidad. Sa pagiging mas mabilis ng urbanization, ang mga compact substation ay umuunlad mula sa tradisyonal na kagamitan ng distribution patungo sa mga green, smart energy nodes sa pamamagitan ng pagsasama ng renewable energy, energy storage systems, at intelligent monitoring technologies. Batay sa pinakabagong teknikal na specifications at analysis 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 i-promote ang low-carbon grid development.

1. Analysis ng Technical Features at Advantages ng Compact Substations

1.1 Core Design Philosophy
Gumagamit ng fully enclosed, modular design, na naglalaman 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 protection level ng enclosure ay ≥IP55, na kayang tumiwas sa harsh environments tulad ng salt spray.

1.2 Six Core Advantages

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

1.3 Technical Structure Classification

2. Typical Urban Grid Application Scenarios at Configuration Plans

2.1 Residential Area Scenario

• 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 (kasama ang 1-3 spares).

2.2 Commercial Center Scenario

• 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 Industrial Park Scenario

• 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 during transport/installation.

2.4 Comparison of Key Parameters Across Three Scenarios

3. Economic Benefit Analysis

3.1 Investment Cost Savings:

• Halimbawa: 35kV single-transformer substation, 4000kVA scale:
• Ang compact substation ay nagbabawas ng higit sa 1 million yuan kumpara sa conventional substation;
• Nagbabawas ng humigit-kumulang 2700 square meters ng land area.

3.2 Operation & Maintenance Cost Reduction:

• Ang paggamit ng advanced technologies tulad ng oil-free equipment ay nagbibigay ng condition-based maintenance, na nagbabawas ng humigit-kumulang 100,000 yuan taunang O&M costs.

3.3 Integrated Solution Economics (2025 Trend):

• Ang bumababang cost ng energy storage technology (system cost ≤0.6 yuan / Wh):
• Ang "PV + Compact Substation + Energy Storage" solution ay maaaring maikliin ang investment payback period sa loob ng 8 years.

Key Data Table

4. Compact Substation Implementation Scenarios

4.1 Priority in New Construction:

• Iprioritize ang paggamit ng compact substations sa bagong residential complexes, commercial centers, at industrial parks, na nagtataglay ng maliit na footprint at madaling pag-install 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.