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

Recently, a Chinese high-voltage circuit breaker manufacturer, in collaboration with numerous renowned enterprises, successfully developed a 550 kV capacitor-free arc-quenching chamber circuit breaker, which has passed the full suite of type tests on its first attempt. This achievement marks a revolutionary breakthrough in the interrupting performance of circuit breakers at the 550 kV voltage level, effectively resolving the long-standing “bottleneck” issue caused by reliance on imported capacit

Famous Brands in Power Equipment and Complete Electrical Systems (Technology & Equipment Sector) Ranking Brand Country Core Advantages 1 Siemens Energy Germany Gas turbines, offshore wind power, HVDC transmission, smart grid 2 GE Vernova United States Gas/steam turbines, renewable energy, grid digitalization 3 Hitachi Energy Switzerland (Former ABB Grid) Ultra-high voltage transformers, HVDC, energy storage systems 4 Schneider Electric

Impact of GIS Disconnector Operations on Secondary Equipment and Mitigation Measures1.Impacts of GIS Disconnector Operations on Secondary Equipment 1.1Transient Overvoltage Effects During opening/closing operations of Gas-Insulated Switchgear (GIS) disconnectors, repeated arc reignition and extinction between contacts cause energy exchange between system inductance and capacitance, generating switching overvoltages with magnitudes 2–4 times the rated phase voltage and durations ranging from tens

ABB has delivered automation and digital solutions for IndianOil’s cross-country pipeline network Spanning over 20,000 km, the pipeline caters to the energy security needs of multiple states in India ABB Ability™ SCADAvantage provides real-time monitoring of pipelines, boosting system availability and securing critical data for better decision-makingABB has successfully delivered an integrated scope of advanced automation and digital solutions for Indian Oil Corporation Ltd’s (IndianOil) countr

High-voltage disconnectors are widely used in China’s power systems due to their convenient operation and strong practicality. However, during long-term operation, serious faults such as insulator fracture and failure to open/close still occur, significantly impacting the normal operation of power systems [1]. Based on this, this paper analyzes common faults of high-voltage disconnectors during operation and proposes corresponding solutions based on actual working conditions to improve managemen

•The development is rooted in the long-term strategicpartnership ABB established in 2022 with Samotics, the leading provider of condition monitoring technology based on Electrical Signature Analysis (ESA).• Global launch at ADIPEC 2025 marks a new era in digital powertrain monitoring, enabling legacy drives to be upgraded to unlock advanced analytics — quickly, seamlessly and cost-effectively.• Integrating ESA technology in high power drives turns modernization into a digital transformation cata

The disconnector is the most widely used type of high-voltage switching equipment. In power systems, high-voltage disconnectors are high-voltage electrical devices used in coordination with high-voltage circuit breakers to perform switching operations. They play a critical role during normal power system operation, switching operations, and substation maintenance. Due to their frequent operation and high reliability requirements, disconnectors significantly impact the design, construction, and s

Common Faults of High-Voltage Circuit Breakers and Mechanism Pressure LossCommon faults of high-voltage circuit breakers themselves include: failure to close, failure to trip, false closing, false tripping, three-phase asynchronism (contacts not closing or opening simultaneously), damage to the operating mechanism or pressure drop, oil spraying or explosion due to insufficient interrupting capacity, and phase-selective circuit breakers failing to operate according to the commanded phase."Circuit

ABB adds Ethernet-APL connectivity to electromagnetic flowmeters for hazardous areasProcessMaster, ABB’s next-generation electromagnetic flowmeter, now enables high-speed field data transmission in hazardous environments.Sensors with Ethernet-APL support combine precise measurement with fast, secure data access, bringing significant changes to the chemical, oil and gas, power, and water industries.ABB’s continuously expanding portfolio of instruments with Ethernet-APL connectivity opens new poss

Recently, the world’s first 550 kV perfluoroisobutyronitrile (C4F7N)-based eco-friendly gas-insulated transmission line, developed by a Chinese manufacturer specializing in environmentally friendly gas-insulated power transmission equipment, was officially commissioned at the 500 kV Rongsheng Substation in Anqing, Anhui Province. This milestone marks another major breakthrough for China in the field of eco-friendly power equipment.For decades, sulfur hexafluoride (SF₆) has been widely used in th