Intelligent Box-type Substation Product Introduction

1. Product Brief Introduction

The intelligent box-type substation is a new generation of integrated prefabricated equipment that integrates the core functions of traditional substations with IoT, edge computing, and cloud platform management. On the basis of integrating basic components such as energy-saving transformers, high and low voltage switchgears, reactive power compensation, and metering devices, it is equipped with intelligent terminal modules, multi-protocol communication modules, and AI fault diagnosis modules. The equipment meets the requirements of "unmanned operation, refined operation and maintenance, systematic optimization", and has the core advantages of data-driven, intelligent early warning, and remote integrated management of modern power distribution equipment. It is the core power distribution equipment for smart grid, intelligent park, digital industry, and new energy allocation, perfectly adapting to the intelligent upgrade needs of modern power distribution systems.

2. Scope of Application

• Smart grid scenarios: Urban main road distribution stations, commercial and residential comprehensive power distribution, municipal supporting intelligent power distribution, adapting to the refined management of power distribution network areas.
• Digital industrial parks: Intelligent manufacturing industrial parks, industrial development zones, intelligent power distribution and energy consumption monitoring of large factories, supporting dynamic adjustment of production load.
• Smart buildings/parks: High-end office buildings, commercial complexes, residential quarters, intelligent power distribution of cultural tourism towns, docking with building automation systems.
• New energy allocation scenarios: Grid-connected and coordinated control of photovoltaic/wind energy/energy storage power stations, optical storage and charging integrated stations, adapting to the fluctuation of new energy output.
• Important load power supply: Scenarios with high requirements for power supply reliability and continuity such as hospitals, schools, data centers, and transportation hubs.
• Remote unmanned duty scenarios: Remote intelligent power distribution and operation and maintenance of mines, remote service areas, water conservancy facilities, and outdoor new energy power stations.
• Voltage level configuration: 10kV/35kV high-voltage incoming line, 0.4kV low-voltage outgoing line, covering capacity requirements from 200kVA to 2500kVA, adapting to different scale power distribution scenarios.

3. Model Definition (Intelligent Exclusive, Industry Universal Compilation Rules)

The model number of the intelligent box-type substation is compiled by "conventional substation code + intelligent characteristic code + voltage level + transformer capacity + function expansion code". The core model such as YBM-ZN-12/0.4-630-G has clear definitions of each part, highlighting intelligent characteristics:

• YBM: Universal code for prefabricated box-type substation (Y - Prefabricated, B - Substation, M - Sealed type, suitable for outdoor/indoor scenarios)
• ZN: Intelligent characteristic code (ZN - Intelligent, mainstream for grid-connected measurement, different from ordinary non-intelligent standard marks)
• 12/0.4: Rated voltage, high voltage side 12kV (10kV/35kV optional), low voltage side 0.4kV; 35kV specification marked as 35/0.4
• 630: Rated capacity of main transformer, unit kVA, common specifications: 200/315/400/630/800/1000/2500kVA
• Function expansion code: G - Gateway type (cloud platform docking), W - Wireless communication type (4G/5G), H - Intelligent metering type (metering and analysis), X - Coordinated control type (new energy linkage), J - Fault early warning type (AI diagnosis), K - Edge computing type, marking exclusive functional attributes

4. Main Technical Parameters

4.1 Basic Power Distribution Parameters (Compliant with General Power Distribution Specifications)

4.1.1 High Voltage Side (10kV/35kV)

• Rated Voltage: 12kV/35kV, compliant with grid voltage standards
• Rated Current: 400A/630A/1250A, adapting to different load requirements
• Rated Short-Circuit Breaking Current: 16kA/20kA (10kV), 12.5kA/16kA (35kV)
• Switch Type: Intelligent vacuum circuit breaker (electric operation, status feedback, remote closing and opening functions)
• Grounding Mode: Neutral ungrounded (10kV) / grounded via arc suppression coil (35kV)
• Protection Functions: Overcurrent, quick break, zero sequence, overvoltage/undervoltage protection, supporting remote setting of protection parameters, protection grade IP33

4.1.2 Transformer Part

• Type: SCB15/SCB16 dry-type transformer (mainstream, fireproof, low noise) / S14/S15 oil-immersed transformer (outdoor high-power scenarios)
• Rated Capacity: 200kVA-2500kVA, adapting to different power distribution scales
• Impedance Voltage: 4%-6% (10kV side), 8%-10% (35kV side)
• Connection Group: Dyn11 (adapting to unbalanced load), insulation grade: F/H grade (dry-type) / A grade (oil-immersed)
• Intelligent Monitoring: Equipped with winding temperature, oil temperature (oil-immersed), iron core temperature sensors, supporting ultra-remote alarm and automatic cooling system
• Noise Level: ≤45dB (1m away from the cabinet), low noise design adapts to multiple scenarios
• Protection Grade: Transformer room IP33/IP43

4.1.3 Low Voltage Side (0.4kV)

• Rated Voltage: 400V/230V (line voltage/phase voltage)
• Rated Current: 630A/1000A/1250A/2000A
• Rated Short-Circuit Breaking Capacity: 30kA/50kA/80kA
• Outgoing Circuits: 4-16 circuits (customizable), each circuit with independent intelligent monitoring and protection
• Reactive Power Compensation: SVG intelligent dynamic reactive power compensation device, compensation capacity 20-200kvar, power factor automatically compensated to ≥0.88, supporting remote adjustment
• Switch Configuration: Intelligent molded case circuit breaker (MCCB), with status monitoring and remote closing/opening functions
• Metering Function: State grid certified 0.2S class intelligent multi-function energy meter, supporting forward and reverse metering, time-sharing metering, real-time data upload

4.2 Core Intelligent Parameters (Intelligent Core Configuration)

4.2.1 Intelligent Monitoring and Control Module

• Monitoring Dimensions: High and low voltage electrical parameters (U/I/P/Q/COSφ/electric energy/harmonic), transformer temperature (winding/oil/iron core), cabinet temperature, switch status, fault information, lightning protection device status, cable joint temperature
• Collection Precision: Electrical parameters ±0.5%, temperature ±1℃, collection cycle ≤1s
• Fault Wave Recording: Supporting wave recording of short circuit, overvoltage, undervoltage and other faults, storing ≥100 fault records

4.2.2 Communication and Control

• Communication Interfaces: RS485/Modbus, optical fiber, 4G/5G, LoRa, power carrier, supporting multi-protocol compatibility
• Remote Control: Supporting remote closing/opening, protection parameter setting, adapting to urban smart grid platform, park management platform, new energy monitoring platform, load APP
• Linkage Function: Supporting coordinated control of energy storage equipment, new energy transformers, reactive power compensation regulation, cooling system start/stop, load switching (expansion function)

4.2.3 Intelligent Analysis and Operation Maintenance

• Edge Computing: Built-in edge computing module to realize load forecasting, energy consumption analysis, and equipment health status assessment
• Fault Early Warning: AI diagnosis algorithm to early warn potential faults such as transformer overheating, aging, and insulation degradation
• Data Storage: Local storage of ≥1 year of operation data, supporting cloud backup and traceability
• Operation and Maintenance Management: Supporting remote fault diagnosis, work order issuance, and equipment life cycle management

4.2.4 Cabinet and Auxiliary Parameters

• Cabinet Material: Cold-rolled steel plate + electrostatic spraying + anti-corrosion coating, thickness ≥2.5mm, anti-corrosion and anti-aging
• Auxiliary Configuration: Intelligent ventilation, dehumidification, heating system (automatic start/stop), smoke alarm + dry powder fire extinguishing device, access control and video monitoring (optional)
• Overall Protection Grade: IP54 (outdoor) / IP43 (indoor), IP65 anti-corrosion enhanced type optional for coastal areas
• Installation Size: Compact design, floor area ≤4㎡, height ≤2.5m

5. Working Conditions

5.1 Environmental Conditions (Adaptable to Multi-scenario Temperature and Climate)

• Ambient Temperature: -40℃~+60℃ (normal temperature design), high cold type customizable to -50℃, high temperature type customizable to +70℃
• Relative Humidity: ≤95% (25℃), allowing short-term condensation, intelligent dehumidification system for automatic regulation
• Altitude: ≤2000m, customizable for sea level >2000m
• Installation Environment: Outdoor open space, indoor power distribution room, customizable for fixed distribution room design
• Vibration Requirements: Withstanding transportation and operation vibration (acceleration ≤3g), cabinet with anti-vibration buffer structure
• Electromagnetic Environment: Anti-electromagnetic interference performance complies with GB/T 17626 standard, adapting to industrial strong interference scenarios

5.2 Electrical Working Conditions (Compliant with Intelligent Power Distribution Specifications)

• Power Frequency: 50Hz±2Hz, frequency fluctuation ≤±1%
• Voltage Fluctuation: High voltage side ±10%, low voltage side ±7%, adapting to grid voltage changes
• Load Characteristics: Adapting to inductive/capacitive/unbalanced load, new energy access load, supporting long-term operation of 110% rated load
• Grid-connected Standard: Complies with GB/T 14717-2019 "Prefabricated Substation", "Intelligent Substation Technical Guidelines", "Distributed Power Grid-connected Technical Requirements"
• Installation Method: Outdoor concrete foundation grounding / indoor floor installation, installation site flatness ≤5mm/m
• Executive Standards: Complying with GB 50053 "Code for Design of 10kV and Below Electric Power Substations", GB/T 3047.1 "General Technical Conditions for Electrical Equipment Cabinets and Enclosures"

6. Performance Characteristics

• Full-dimensional intelligent monitoring and transparent operation: Covering full-dimensional monitoring of electrical parameters, equipment status, environmental parameters, and safety status, with real-time data upload, visual operation status, visualized operation data, and visualized management.
• AI fault early warning and reduced manual intervention: AI diagnosis algorithm, real-time analysis of equipment operation parameters and fault diagnosis, fault warning accuracy ≥90%, manual inspection frequency reduced by 80%, adapting to unmanned duty scenarios.
• Automatic fault isolation and rapid recovery: When a fault occurs in the line, it can be automatically isolated within 1s, fault location accuracy ≥95%, and rapid restoration of power supply after fault elimination.
• Energy saving and consumption reduction, optimized operation: Real-time monitoring of energy consumption data, dynamic tracking of load changes and power factor changes, dynamic adjustment of reactive power compensation capacity, operation energy saving rate ≥15%, automatic peak-valley regulation, energy saving and consumption reduction.
• Multi-protocol compatibility and flexible grid connection: Supporting multiple protocols such as Modbus, 104, and national grid protocol, seamless docking with new energy grid connection, grid-connected/off-grid dual-mode, meeting multi-scenario intelligent power distribution needs.
• Compact and reliable, long service life: Integrated prefabricated design, factory debugging completed, commissioning on site in 2-3 days, IP54 high protection grade, anti-corrosion and anti-aging, core components adopting industrial-grade products, low failure rate, service life ≥20 years.
• Safety protection, worry-free operation: Five-prevention interlock on high voltage side, leakage protection on low voltage side, intelligent power failure protection, fault automatic isolation, fire protection linkage and other multi-level safety protection, all-round initial fault identification and rapid disposal, safe and reliable operation.
• Full life cycle management and refined operation: Local + cloud dual-mode data storage, supporting refined operation and maintenance management, operation log traceable for 1 year, supporting remote parameter setting, operation status query, fault alarm and processing.
• Customizable expansion and strong scalability: Supporting customized expansion of edge computing, new energy linkage, energy storage control and other functions, protection grade customizable, expandable according to user needs, no need for secondary transformation.
• Standardized design and rapid deployment: Complying with industry standards and communication protocols, compatible with existing management platforms, modular internal layout, supporting flexible expansion of functions and capacity without overall modification.