Gujiao Xingneng Power Plant Construction Project – Building an Efficient, Reliable, and Intelligent Power Source Solution

This project provides a complete set of auxiliary power system and substation solutions for a large thermal power plant, focusing on four core aspects: "High reliability of auxiliary power, adaptation to harsh environments, intelligent O&M, efficient grid connection," creating a model power system for a modern smart power plant.

1.Core Challenges & Solutions

Challenge ① Auxiliary power system reliability requirements are extremely high, related to the entire plant's safe operation
✅ Solution:

Multiple Auxiliary Power Backup Source Systems:

Working power source (taken from) generator terminal, backup power source grid or start-up transformer.

Sets diesel generator sets as emergency safety power sources, ensuring safe emergency shutdown.

Auxiliary Power Fast Transfer Device: Uses intelligent synchronous capture technology to achieve rapid, seamless switching of auxiliary power sources.

Challenge ② Harsh plant environment, equipment needs to withstand high temperature, high dust
✅ Solution:

Special Environment Design:

Switchgear uses IP54 protection level, equipped with dust filters and anti-condensation heaters.

Busway selects high-strength fully enclosed type,耐受 (tolerates) ambient temperature -35℃ ~ +55℃.

Anti-corrosion & Explosion-proof Configuration:

Coal bunker bay, pulverizing system areas use explosion-proof distribution equipment.

Chemical workshop area equipment has anti-corrosion performance.

Challenge ③ Strict grid connection requirements, need to meet grid dispatch commands
✅ Solution:

Intelligent Substation System:

220kV/500kV substation configures microprocessor protection systems and synchronization/grid connection devices.

Equips with Automatic Generation Control (AGC) and Automatic Voltage Control (AVC) systems.

Power Quality Assurance:

Installs harmonic suppression and reactive power compensation devices, ensuring power quality at the grid connection point meets standards.

Challenge ④ Large scale of equipment, complex O&M management
✅ Solution:

Plant Intelligent Management & Control Platform:

Integrates auxiliary power monitoring, fault diagnosis, preventive maintenance functions.

Establishes equipment full lifecycle management system.

Intelligent Inspection System:

Configures inspection robots and intelligent cameras, achieving automatic equipment status collection.

2. Core System Configuration Plan

3. Technical Highlights

⚡ Power Generation Industry Professional Design

Graded Auxiliary Power Configuration: Powers loads by Category I, II, III classification, ensuring absolute reliability for important loads.

Grounding System Optimization: Generator neutral (point) uses grounding via resistor through grounding transformer, limiting earth fault current.

Electromagnetic Compatibility Design: HV/LV systems layered layout, effectively suppressing electromagnetic interference.

⚡Special Adaptation to Harsh Environments

High Temperature Protection: Transformers use forced oil circulation air cooling, switchgear equipped with temperature control systems.

Dust-proof Design: Maintains slight positive pressure in important distribution rooms, preventing dust ingress.

Seismic Reinforcement: Equipment uses seismic design, seismic intensity level 8.

⚡Advanced Intelligent O&M

Digital Twin Application: Establishes a 3D model of the entire plant power system, achieving visual O&M.

Intelligent Early Warning System: Achieves early equipment fault warning based on AI algorithms.

Mobile O&M Management: Realizes real-time field O&M data interaction via handheld terminals.

⚡Green & Efficient Operation

Energy Efficiency Optimization System: Energy-saving control for auxiliary systems, reducing plant auxiliary power consumption rate.

Equipment Health Management: Establishes equipment health indicator system and lifespan assessment model.

Environmental Compliance Assurance: Ensures all emission indicators meet environmental requirements.

4. Expected Benefits

Reliability Improvement: Auxiliary power system availability ≥99.9%, avoiding unplanned outages.

O&M Optimization: O&M personnel work efficiency improved by 50%, maintenance costs reduced by 20%.

Economic Benefits: Reduce plant auxiliary power consumption rate by 0.5%-1%, significant annual operational cost savings.

Safety Enhancement: Achieves equipment fault warning rate of 90%, greatly enhancing operational safety.

5. Our Advantages

✔ Deep (accumulation) in power generation industry: Provided solutions for multiple large thermal, hydro, and new energy projects.
✔ Full range product capability: Full set of electrical equipment supply capability from generator outlet to substation.
✔ Professional technical team: Possesses rich experience in power plant design, installation, and commissioning.
✔ Intelligent O&M services: Provides full lifecycle intelligent O&M solutions.