Dear C# Tutorials: I'm enjoying your instruction. The graphics and narration are very clear and accessible. In this particular video, there is a digression about which generation units are committed to run and serve load. Please consider revising that section. There are a lot of factors at play: Is it a region where wholesale electricity is traded in a market or is it for a traditional vertically integrated utility that owns and operates everything? You also need to distinguish between energy consumed by load and energy capacity needed to fulfill reliability requirements. Nuclear power definitely is not the least cost source in an era of cheap natural gas and plentiful solar and wind (no fuel costs). The renewable sources also receive incentives for added advantage. Natural gas is flexible to balance out variable renewable supply, but in some regions it must participate in cap and trade. There are also limits on the has pipeline system during winter months. Security, environmental, and legal costs are significant for Nuclear. Until modular nuclear is commercialized (NuScale), nuclear will be considered an inflexible base load source. Aside from the digression into generation sources, I'm loving your instruction. Keep up the great work!
Hi.. I just have a question with the 1st equation Iload+ I1 +I4=0.. did you just transposed I1+I4 on the other side? im just wondering why they did not have a negative sign.. and it should be like Iload= - (I1+I4)? thanks
Good explanation, but you need to clear 2 things: 1) The direction of current I(load) and 2) put a star near V2 in the formula, e.g (P-jQ)/conjugate(V2)
What I don't understand is - why does power flow from the generator bus to the load buses with lower voltage? I.e. How can power flow if there is higher potential difference at V1=1.0 to V5=1.03?
Hi! For active power flow, it is usually dictated by the angle difference. The bus who leads will deliver the active power. For reactive power, it is usually (for transmission systems with high x/r ratio) dictated by the magnitude. usually the bus with higher voltage will provide the reactive power.
hi.... great subject... ^^ I also want to know, is how can this principle be applied internally to a power system of lets say a a High Rise Building...? thank you very much and hoping for more lessons to come ^^
A device which is used to maintain the system voltage with in limits. e.g capacitors are used to maintain the voltage by injecting the vars in system and tap changing T/F are also used to maintain the system voltage.
