Solusyon sa Paghulagway nga Intelligente alang sa Outdoor VT/PT: Smart Sensing Hub sa Bag-ong mga Sistema sa Kuryente

2yrs + staff 1000+m² US$300,000,000+ China

I. Posisyon sa Solusyon & Teknikal na Pananaw
Sa kritikal na yugto ng pagbabago mula sa konstruksyon ng smart grid hanggang sa digital power grid, ang solusyong ito ay nagpapalit sa mga Voltage Transformers (VT/PT) sa labas upang maging core nodes sa holographic sensing network ng smart substations. Sa pamamagitan ng pagsasama ng embedded sensing, IoT communication, at teknolohiyang pang-artificial intelligence, ito ay nakakamit ang doble na pagkamalaki sa device state observability at operational controllability, sumusuporta sa pagbabago ng grid dispatch at protection systems patungo sa data-driven operation.

II. Pangunahing Teknikal na Arkitektura

End-to-End Digital Access

Teknikal na Modulo	Paggampan ng Function
Native Digital Interface	Standard IEC 61850-9-2LE protocol digital output interface, suportado ang direkta connection sa Merging Units (MU)
Electrification Sensing Revolution	Gumagamit ng capacitive voltage divider sensing units, lumilikha ng ganap na digital signals (Accuracy: Class 0.2)
Open Protocol Stack	Kompatibleng IEEE C37.118.2 / GB/T 32890 at iba pang standards, nag-aalis ng protocol silos

Edge Intelligence Diagnostic Engine

Tatlong-Tier Analytics Architecture: Raw data sa device-layer → Feature extraction sa edge computing node → Deep decision-making sa cloud platform
Predictive Maintenance Models: Sistema ng health assessment batay sa LSTM-RNN algorithms, nagbibigay:
▶ Insulation degradation trend prediction (>92% warning accuracy 7 days in advance)
▶ Root cause analysis ng mechanical fault (Suportado ang SF6 leakage location accuracy ±0.5kPa)
▶ Partial discharge pattern recognition (Classification accuracy meets IEC 60270 Standard Class III)

III. System-Level Value Creation

Enhancement sa Grid Control

Protection action latency compressed to ~15ms level (40% improvement vs. traditional solutions)
Phasor Measurement Unit (PMU) synchronization accuracy ≤ ±0.01°
Sumusuporta sa millisecond-level reactive power compensation decisions

Lean Management sa Asset

Monitoring Dimension	Pangunahing Diagnostic Indicators	Teknikal na Implementation	Maintenance Benefits
Insulation Life Assessment	▪ Degree of Polymerization (DP) curve ▪ Furfural content (Warning ≥0.1mg/L) ▪ Dissipation Factor (tanδ growth rate)	Embedded oil chromatography sensor + On-line pyrolysis monitoring unit	▶ Maintenance cost reduction ≥35% ▶ Insulation failure warning 6-8 months in advance ▶ Life prediction error <3 years
Mechanical Condition Monitoring	▪ Vibration spectrum eigenvalues (Energy spectrum in 0.5-2.5kHz band) ▪ SF6 density gradient (≤ ±5% nominal value)	Micro MEMS accelerometer + Laser density sensor array	▶ Unplanned outages reduced ≥60% ▶ Mechanical fault location accuracy ±0.3kPa ▶ Seal failure detection rate ≥98%
Environmental Coupling Adaptation	▪ Temperature-Humidity coupling coefficient (Temp. compensation accuracy 0.05℃/%RH) ▪ Equivalent Salt Deposit Density (ESDD)	Nano-coated temperature/humidity sensor + On-line leakage current analysis module	▶ False alarm rate in extreme conditions down ≥75% ▶ External insulation assessment efficiency improved ≥4x ▶ Cleaning cycle optimized ≥35%
Partial Discharge (PD) Monitoring	▪ UHF/TEV combined discharge pattern (PRPD phase-resolved pattern) ▪ Discharge magnitude (pC) / Repetition rate (n/s)	UHF antenna array + Transient Earth Voltage (TEV) sensors	▶ Early detection rate for insulation defects >97% ▶ PD type recognition accuracy Class II ▶ Testing cost savings ≥50%

Support sa New Power System
Nagtatayo ng collaborative "Device-Edge-Cloud" system:

Device Side: Bawat VT/PT ay nagsisilbing independent sensing cell.
Edge Side: Substation-level smart analysis host enables regional collaboration.
Cloud Platform: Sumusuporta sa 3D digital twin para sa health status ng grid-wide devices.

IV. Engineering Implementation Path

Hardware Deployment
o Plug-and-Play intelligent component enclosure (Protection class IP68)
o Modular monitoring units support hot-swap replacement
o Passive wireless sensor clusters (reducing wiring complexity by 60%)
Data Integration
Transition Strategy
Nagbibigay ng retrofit kits para sa traditional electromagnetic PTs:
o External Smart Adapter (supports analog-to-digital conversion)
o Non-intrusive DGA (Dissolved Gas Analysis) breathing membrane gas extraction device
o Scalable TEV sensor arrays

V. Application Results
Ang praktikal na paggamit sa isang 500kV smart substation ay nagpapakita:

Device condition assessment efficiency improved ≥8x
Early detection rate for insulation defects increased to 97.3%
Maintenance manpower requirement decreased ≥70%
Asset service life extended by 15-20%

VI. Summary ng Halaga ng Solusyon
Ang solusyong ito ay nagpapalit sa mga outdoor VTs/PTs upang maging integrated smart terminals na nagpapakita ng "Sensing-Analysis-Decision-making," na nagsosolusyon sa tatlong pangunahing kontradiksyon ng traditional equipment: analog transmission accuracy loss, offline detection timeliness lag, at isolated device data silos. Ito ay nagbibigay ng pundamental na sensing cornerstone para sa pagtatayo ng bagong digital power grid na may "Observability, Measurability, and Controllability", na nagsisiguro ng malaking pagtataas sa grid resilience at energy utilization efficiency. Ang solusyong ito ay isang pangunahing teknikal na daan na sumusuporta sa transformation at upgrade ng power systems sa ilalim ng "Dual Carbon" goals.

Note: Ang solusyong ito ay sumusunod sa IEEE P2815, DL/T 860 at iba pang standard frameworks, applicable sa scenarios mula 110kV hanggang 1000kV.

07/19/2025

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