Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

When Actual Grid THD Exceeds Limits (e.g., Voltage THDv > 5%, Current THDi > 10%), It Causes Organic Damage to Equipment Across the Entire Power Chain — Transmission → Distribution → Generation → Control → Consumption. The Core Mechanisms Are Additional Losses, Resonant Overcurrent, Torque Fluctuations, and Sampling Distortion. Damage Mechanisms and Manifestations Vary Significantly by Equipment Type, as Detailed Below:1. Transmission Equipment: Overheating, Aging, and Drastically Reduced

The impact of harmonic THD errors on power systems must be analyzed from two aspects: "actual grid THD exceeding limits (excessive harmonic content)" and "THD measurement errors (inaccurate monitoring)" — the former directly damages system equipment and stability, while the latter leads to improper mitigation due to "false or missed alarms." When combined, these two factors amplify system risks. The impacts span the entire power chain — generation → transmission → distribution → consumption — af

What Is the Future of Intelligent Electrical Rooms?The Future of Intelligent Electrical RoomsIntelligent electrical rooms represent a significant upgrade from traditional setups by leveraging technologies such as the Internet of Things (IoT), big data analytics, and cloud computing. These advancements facilitate 24/7 remote monitoring, ensuring optimal safety, reliability, and operational efficiency.Key Trends in Intelligent Electrical Room Development Include: Integration and Innovation through

Electrical Room Inspection: Content and PrecautionsThe electrical room is a critical facility for power equipment, responsible for power supply, distribution, and energy output. Therefore, regular inspection of the electrical room is an essential task.1. Electrical Room Inspection Content: Check the operation and lock of entry/exit doors, ensure door gaps are tight, and verify the floor is level and free of obstructions. Monitor the room’s temperature, humidity, and odor to ensure environmental

What is SST?SST stands for Solid-State Transformer, also known as Power Electronic Transformer (PET). From the perspective of power transmission, a typical SST connects to a 10 kV AC grid on the primary side and outputs approximately 800 V DC on the secondary side. The power conversion process generally involves two stages: AC-to-DC and DC-to-DC (step-down). When the output is used for individual equipment or integrated into servers, an additional stage to step down from 800 V to 48 V is require

One of the core challenges of Solid-State Transformers (SST) is that the voltage rating of a single power semiconductor device is far insufficient to directly handle medium-voltage distribution networks (e.g., 10 kV). Addressing this voltage limitation does not rely on a single technology, but rather a "combination approach." The main strategies can be categorized into two types: "internal" (through device-level technological and material innovation) and "external collaboration" (through circuit

For SF6 gas leakage rate detection in GIS equipment, when using the quantitative leak detection method, the initial SF6 gas content in the GIS equipment must be accurately measured. According to relevant standards, the measurement error should be controlled within ±0.5%. The leakage rate is calculated based on changes in gas content after a period of time, thereby evaluating the sealing performance of the equipment.In qualitative leak detection methods, direct visual inspection is commonly used,

Optimized SEO-Friendly Abstract: NVIDIA’s 800V DC Architecture and the Rise of Solid-State Transformers in Next-Gen AI Data CentersOn October 16, 2025, NVIDIA published its landmark white paper, “800 VDC Architecture for Next-Generation AI Infrastructure,” signaling a pivotal shift in power delivery for AI-driven data centers. As large-scale AI models and next-gen CPUs/GPUs push computational demands to unprecedented levels, rack-level power consumption has surged from 10 kW in 2020 to 150 kW in

Current Price Level of SST SystemsCurrently, SST products are in the early stages of development. There is significant variation in solutions and technical routes among both overseas and domestic suppliers. The widely accepted average value per watt is between 4 to 5 RMB. Taking a typical 2.4 MW SST configuration as an example, at 5 RMB per watt, the total system value could reach 8 million to 10 million RMB. This estimate is based on pilot projects in data centers in the U.S. and Europe (such a

Analysis and Handling of Fault Tripping in 35kV Substation Operation1. Analysis of Tripping Faults1.1 Line-Related Tripping FaultsIn power systems, the coverage area is extensive. To meet power supply demands, numerous transmission lines must be installed—posing significant management challenges. Especially for special-purpose lines, installations are often located in remote areas such as suburbs to minimize impact on residential life. However, these remote areas have complex environments, makin