AFRO Group’s Post

⚡ Mastering the Backbone of Electrical Systems: Power System Protection and Switchgear In the world of electrical engineering, ensuring the safety and reliability of power systems is paramount. Recently, I had the privilege of diving deeper into this critical domain by successfully completing an 8-week NPTEL course on Power System Protection and Switchgear, earning a consolidated score of 62%. This course was a journey through the intricate mechanisms that safeguard our power grids. From understanding the principles of circuit breakers and protective relays to exploring advanced fault analysis and system stability, it was an eye-opening experience into the unseen heroes of our electrical infrastructure. What made this achievement even more rewarding was the opportunity to connect theoretical knowledge with real-world applications, such as ensuring the safety of electrical networks in industries and power plants. It also reinforced the importance of precision, resilience, and innovation in designing and maintaining these systems. I’m grateful to NPTEL and the exceptional instructors for delivering such a well-structured program. This milestone has not only enhanced my technical expertise but also deepened my commitment to contributing to safer and more reliable power systems. #ElectricalEngineering #PowerSystems #NPTEL #LifelongLearning #Switchgear #SkillDevelopment

The scope of your delivery is very important to understand. Afterall, your company will not get paid for work they were not contracted to do. And sometimes doing something extra for the customer or another supplier on site could back fire if you give bad advice, or cause an issue from non sanctioned activities. (Of course there is a balancing act here, as we all need to be reasonable and work together to achieve success on large projects) Useful questions: - Is this a turn key delivery? - Definition of system scope? - How payment is calculated? reimbursable vs all inclusive/fixed price If you are delivering a turn key system (at the product or system level (e.g. MV SWBD and remote terminal local automation system (PMS/SAS), or a complete power distribution system from HV to MV to LV to UPS….), then you need to make sure your products operate as a complete system. Read more https://lnkd.in/dvbe_AWe

We are pleased to announce that DALAHO CCPP's DCS , ESD , UMC designing , HW / SW & Network Integration and logic implementation were completed successfully by RABIA CO. DALAHO CCPP is the Iranian First Class F / Three Level Pressure Combined Cycle Power Plant with arrangement 2+2+1 which equipped with DCS and ESD based on the ABB S+ (HC800 and AC800M). The UMC ( Unit Mater Control ) logic will provide fast and optimised plant Auto startup and shutdown with minimal operator intervention relied on a Golden Key 🛎️. The recent last task was the commissioning of the third Boldorochi class F diverter damper . The first D.D from Boldrocchi was commissioned in the HERIS CCPP , 2nd and 3rd in DALAHO CCPP by our technical teams from RABIA CO without Manufacture TFA. In the critical case the DD must be able to isolate the HRSG by emergency closing in shot time ( < 30s) . There is a robust hydraulic system that guarantee fast closing and also prevention of blade collision to the landing-bar by means of hydraulic braking (cushion mechanism ). Abolfazl Bakhshi

Enhance Your Skills with the MAR4/OS4 High Voltage Training Course Looking to advance your knowledge and expertise in marine/offshore high voltage power systems? The Safe Operation of Marine/Offshore High Voltage Power Systems (Full High Voltage Authorisation) (MAR4/OS4) course offers comprehensive training in high and low voltage systems, safety regulations, fault diagnosis, and advanced HV switching operations on networks up to 15kV. This course includes both theoretical instruction and practical exercises to prepare candidates for HV authorisation under their company's safety regulations. Upon successful completion, participants will be assessed for competency in switching and issuing work documents for all circuit types. Learn more here: https://lnkd.in/g8FcnzSM #MarineTraining #OffshoreSafety #HighVoltage #HVTraining #ElectricalEngineering #ProfessionalDevelopment

We're back again with another #ElectricalSafetyMonth blog... This time we're focusing in on High Voltage electrical systems. What's your take on the best ways to develop knowledge of Safe Systems of Work for HV? We have put together a list of 5 key considerations for any engineer looking to take their first steps on their HV competency journey. https://lnkd.in/ezW5rXzn

An important setting for network switches is the channel bandwidth limitation. If an IED, switch, or other device on the network suffers a communications malfunction, it may start to spam the communications network with a stream of data. This is known as a network storm or broadcast storm, and it can prevent valid data from transiting the network by overloading the network bandwidth. This results in dropped data packets, leading to partial or total loss of communication between IEDs.

Completed competency course for low voltage overhead line

Personal experience: On a vessel the power system is isolated and weak. It is common to use premag systems on transformers to reduce voltage sag during energization. This involves using an alternate source of LV power, synchronous to the main power source, to magnetize the core via a high impedance pathway such as a small premag transformer, before connecting the main power. If the energization control system is designed particularly poorly and without interlocks, it may be possible to have the premag transformer energised while the main MV winding is grounded at the switchboard. That is exactly what happened in the below photograph.

Greetings everybody, in this video I have explained chapter 1 from Electrical circuits 1. السلام عليكم جماعة ، ف هالفيديو شرحت شابتر 1 من مادة Electrical circuits 1 https://lnkd.in/gyTiDdpB

On one vessel, equipped with dual changeover AVRs, these cabinets were designed so that the there was a set of change over relays to swap all signals such as CTs and VTs between the two AVRs. The generators were not equipped with a PMG for excitation power, instead they used a combination of VT power and boost CTs for short circuit excitation. Normally these boost CTs are shorted at AVR unless there is a short circuit and need for boost power to the AVR. Unfortunately the commissioning engineer responsible had not performed a line check between the generator junction box and the AVR cabinet. The boost CTs were left open circuit, unconnected, and a spare VT winding was instead connected to the change over relay. The generator and engine were tested for several days without load before the issue was noticed, though a funny smell was emanating from the AVR cabinet for a few days before the smoke escaped… Luckily the lack of load meant no current, and hence the boost CTs were not damaged by OC overvoltage. Read more https://lnkd.in/dvE_jvBd