I have been doing quite a bit of research looking for an applicable source to determine good values for coincident/non-coincident peak residential load values for sizing of a future distribution feeder. I know that many utilities use different assumed values for future residential customers, but...
I am coming up on several interconnection studies for a transmission client. The Client's system uses ASPEN OneLiner, and most of the connections will be wind farms. I have a few ideas on how to model the wind turbines, but given that ASPEN is a very simplistic model, I am concerned about...
Hey folks, I don't know how many read Electricity Today, but they hvae an interesting article in Issue 6- EleQuant has developed a new Power Flow/Real time system called Agora that uses a new, NON-ITERATIVE power flow algorithm, which supposedly beats Newton-Raphson hands down. Unfortunately...
Hey folks,
I am working on a project at a substation that has some really old equipment in it. It appears that they are using a Quindar Quadraphase freqency shift keying PLC on one of their lines. I have done extensive web searching and have not been able to obtain a manual for this device...
Hey folks, Anyone know where I can get my hands on the GE Instruction booklet for an old SBC Breaker failure relay? The customer has several installed but has no booklet, nor do they have any contact development/relay logic schemes showing what I have spare on the relay. I have tried the GE...
Hello all,
I am somewhat of a newcomer to the circuits world. I have a good understanding of electronics and theory, but absolutely no experience with layout. Does anyone have a suggestion for standards, textbooks, online courses , etc., at which I can pick up some of the fundamental...
Our power system has four nuclear class 1E safety-related 4160V/480V substation transformers that supply our class 1E 480V system. The regulation of these transformers as we move from low house load to high house load is sub par and requires us to change taps. However, the transformers were...
Our plant has a +/- 125VDC/250VDC split bus DC power system to ensure operability in the event of a loss of offsite power. The DC system has protective fuses on both the supply and return paths (+125/Nuetral and -125/Nuetral) as is typical. I am having trouble finding a good solid industry...
