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GWZC-9000 Drainage Pumping Station Automation System
Drainage Pumping Station Automation System—Forging a New Urban Flood Control Ecosystem
Drainage pump stations employ electromechanical systems for active water discharge, IoT and AI for precise regulation, and backup power for reliability. Digital twin platforms optimize decision-making with failure prediction and damage assessment. Each ¥100M investment reduces annual losses by ¥230M while saving 30% energy, as proven by Tokyo's flood defense system.
2025/07/23
Hydropower Station
Comprehensive Analysis of the Yarlung Zangbo River Hydropower Station
Massive hydropower potential, extreme seismic/geological challenges, unprecedented engineering (tunnels, dam, turbines), sensitive ecology, and critical transboundary impacts.​
2025/07/22
VT (Voltage Transformer ) Protection RelayRear View
Comprehensive Protection Relay: Full Analysis​
A comprehensive protection relay is an intelligent device that safeguards electrical systems by detecting faults (e.g., overcurrent, short circuits) and isolating affected equipment. It integrates multiple protection functions, ensures system reliability, and prevents damage. This guide covers its definition, working principle, protection targets, activation conditions, and outcomes.
2025/07/18
Marine Switchboard
Marine Switchboard Market Share Analysis and Development Trend Analysis
Conclusion: European players maintain short-term dominance in premium segments, but Chinese manufacturers are rapidly gaining ground through cost and scale advantages. Future competition will center on smart functionalities, green compatibility, and modular innovation, with technological agility determining market repositioning.
2025/07/17
technical knowledge More
Synchronism Check Function vs. Synchronizing Function: Roles, Differences, and Applications
This article compares the ​synchronism check function​ in line protection devices and the ​synchronizing function​ in dedicated synchronizing equipment. The ​synchronism check function​ serves as a safety interlock for circuit breaker closing operations, while the ​synchronizing function​ enables precise generator synchronization and critical tie-line interconnections with active parameter regulation. Explore core principles, application scenarios, and technical distinctions between these critical power system components.
2025/08/11
Main Transformer On-load Tap Changer Control Relay Side View
Transformer Protection Configuration Principles
Transformer protection is critical for maintaining power system reliability. A well-designed ​transformer protection configuration​ must balance speed, selectivity, and sensitivity to prevent equipment damage and outages. ​Primary protection​ (e.g., differential and gas protection) acts instantly for internal faults, while ​backup protection​ (e.g., overcurrent, zero-sequence) provides redundancy for extended coverage. This guide covers key principles, settings, and coordination to optimize ​transformer protection​ schemes for different transformer types and voltage levels.
2025/08/11
Generator-Transformer Differential Protection Relay Rear View
What Are Positive Sequence, Negative Sequence, and Zero Sequence in Three-Phase Circuits?
In relay protection systems, we often encounter concepts such as zero-sequence current protection in microprocessor-based protection devices and inverse-time negative-sequence protection in transformer protection devices. Initially, I found these concepts quite confusing. However, to facilitate subsequent study and work, it is essential to understand these critical concepts of positive sequence, negative sequence, and zero sequence in three-phase circuits.
2025/08/08
Gas-Insulated Switchgear (GIS)
Gas-Insulated Switchgear (GIS) for High-Altitude Applications
For Gas-Insulated Switchgear (GIS), since the main live circuits are enclosed within sealed, gas-filled compartments and external connections utilize solid insulation, the insulation performance is unaffected by atmospheric pressure. The primary consideration for GIS at high altitudes is the mechanical strength of the gas enclosure (gas compartment).
2025/08/08
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