Integrated Optimization Solution for Power Plant Electrical Systems
Ⅰ. Core Objectives
Enhance power generation efficiency, ensure power supply reliability, reduce full life-cycle operational costs, and achieve intelligent regulation of power systems.
Ⅱ. Core Subsystem Optimization Solutions
Dedicated Solution for Power Transformers
Pain Point Analysis: Transformers serve as the critical hub for power transmission, accounting for 3%~5% of total plant energy losses. Failure-induced downtime leads to complete plant power outages.
1. Transformer Selection & Technological Innovation
|
Optimization Direction |
Implementation Strategy |
Technical Benefits |
|
Ultra-Efficient Transformers |
Adopt SCRBH15-class or higher amorphous alloy transformers or Grade-1 energy-efficient oil-immersed transformers |
40%~70% reduction in no-load loss, saving 100,000 kWh/year per unit |
|
Impedance Optimization Design |
Customize impedance values based on short-circuit current (±2% accuracy) |
Suppresses short-circuit impact, enhances equipment safety |
|
Intelligent Cooling System |
Integrate VFD fans + oil pumps with coordinated control |
50% power reduction at <60% load, noise ≤65dB |
2. Key Performance Enhancement Path
graph LR
A[Electromagnetic Optimization] --> B[Stepped Lap Core]
A --> C[Epoxy Resin Vacuum Casting]
B --> D[15% Eddy Current Loss Reduction]
C --> E[Partial Discharge <5pC]
E --> F[Lifespan Extended to 40 Years]
3. Digital O&M System
- Condition Sensing Layer
- Embedded fiber-optic temperature sensors (±0.5°C accuracy)
- Online DGA monitoring (H₂, C₂H₂ warning threshold ≤1ppm)
- Intelligent Diagnostic Platform
- IEEE C57.91 thermal aging model for lifespan prediction
- Reinforcement learning algorithms for inter-turn fault localization (≥92% accuracy)
Ⅲ. System-Level Collaborative Optimization
Transformer-Subsystem Integration
|
Collaborative Module |
Optimization Measure |
Comprehensive Benefit |
|
Generators |
18-pulse rectifier transformer configuration |
THD reduced from 8% → 2% |
|
Switchgear |
Transformer-GIS protection coordination time ≤15ms |
Fault clearance speed ×3 faster |
|
Load Management |
±10% dynamic voltage regulation (OLTC) |
Voltage compliance rate ≥99.99% |
Ⅳ. Quantified Implementation Benefits
|
Metric |
Pre-Optimization |
Post-Optimization |
Improvement |
|
Comprehensive Efficiency |
95.2% |
98.1% |
↑ 3.04% |
|
Unplanned Outages |
2.3 times/year |
0.2 times/year |
↓ 91.3% |
|
Coal Consumption per kWh |
285g/kWh |
263g/kWh |
↓ 7.7% |
|
O&M Cost |
18 USD/kVA/year |
9.5 USD/kVA/year |
↓ 47.2% |
Note: Standard coal equivalent
Ⅴ. Key Technical Safeguards
- Life-Cycle Cost (LCC) Model
- Procurement cost ratio: 75% → 45%, emphasizing 20-year O&M optimization
- Electro-Thermal-Mechanical Multi-physics Simulation (ANSYS Maxwell + Fluent)
- Hotspot temperature error ≤3K, design margin reduced by 15%
