Refer to either Bulk Power Generation (i.e., large thermal power plants), Distributed Energy Resources (i.e., small-scale wind and solar generation), Renewable Energy Generation (i.e., larger-scale wind and solar generation).
Questions tagged [power-generation]
109 questions
34
votes
3 answers
Why does power dip during a lightning storm?
If lightning were to strike power lines, wouldn't you expect it to increase the power, and hence your room lights get brighter?
Why do they go dim for 1 second at a time?
PJazz
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17
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3 answers
What happens to excess electricity generated going in to a grid?
How is excess electricity generated dissipated? I know that the grid is balanced, etc. But given that there will be momentary over-generation at some point over the whole grid where does any excess electricity go? For example, in the event of a…
BMA1200
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9
votes
6 answers
Why don't we think about battery storage for all sources of electricity on a utility scale instead of just renewables?
One of the repeating solutions that comes up when talking about renewable energy power generation and the intermittency of it is battery power storage.
This has got me thinking, it takes hours or days for gas and coal fire plants (and I assume other…
Patrick
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6
votes
3 answers
How does current flow to the ground in Delta connection (Ungrounded) in an Earth Fault?
I'm an electrical engineering student and I'm currently in In-Plant training in Electricity Company of my country. Recently I visited an electrical grid. I got to know about Earthing transformer. I asked an engineer about how the current flows to…
Aimkiller
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5
votes
1 answer
Power generator and idle air conditioners voltage increase
Today we faced the interesting issue.
There’s an office building with the backup gasoline power generator (non-inverter 7500 W max). The load on average is around 5000-6000 W.
During the power outage today the generator was launched and was…
Max Tatarchenko
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5
votes
1 answer
Why can generators be damaged by series capacitors (SSR)?
Specifically I am talking about generation that uses steam to generate turbo spin (steam cycle) like nuclear or natural gas plants. I have been learning about Subsynchronous Resonance (SSR), which is whenever a generator of the kind mentioned above…
ZekeC
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5
votes
2 answers
Joining two AC inputs with different voltages
I have a project where we have to design a wind turbine. I currently have two 5 kW generators (https://wxftgs.en.alibaba.com/product/60689557542-804881319/5kw_permanent_magnet_generator_price.html?spm=a2700.8304367.prewdfa4cf.2.73152c54UBoPer)
that…
The_one
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4
votes
1 answer
How fast do power plants need to respond to demand?
I've heard the layman's description of electrical grid response time before - it usually contains the word "instant" or "real-time". But I'm interested in the actual response times of the various types of power generation.
My limited ability to…
kdbanman
- 143
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4
votes
2 answers
Self Contained Temperature Display in Very High Temp Environment
I want to build a temperature sensor + display that will operate in a high temperature environment (routinely 120C, but periodically spiking to 175C, and might be exposed to 350C where it would be required to survive for very long--ie it could fail…
SchroedingersCat
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3
votes
1 answer
Why does AS3001:2008 Transportable Structures explicitly deny a separate earthing electrode?
As the title says, if a generator is providing a TNS earthing system connected to a transportable structure through a detachable connection, why does AS3001 state:
Isolation of the protective earth conductor. No fixed connection shall be made…
SS1
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3
votes
2 answers
Frequency behavior in the electric grid
Is the frequency behavior equal in very distant interconnected points of the grid? For example, if there is a sudden generation drop in Portugal, is the frequency behavior in Portugal exactly the same as the one in Poland? (Poland and Portugal are…
Samuele Benito Di Gioia
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3
votes
3 answers
What happens with the power grid if nobody uses electricity?
How much electricity does consume electric system by itself? Just to have an option at any moment to plug in anything at socket at home and turn it on. There are huge power plants to convert high voltage to much lower values (220/110V) and…
XuMuK
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3
votes
1 answer
Generator voltage dipping at specific loads with observed increase in frequency
Background
I have an interesting problem at hand on a diesel generator onboard a marine platform. The generator is rated at 380V, 50Hz, 3Ph and 1500kW output.
Problem
While conducting installation trials of the generator in a mixed load bank at 0.8…
Ishan Karve
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3
votes
1 answer
How much installed capacity of wind or PV would be required to match the output of a 4 GW nuclear power plant?
I am trying to understand the challenge of decarbonising the power grid, and the equivalence between different generation technologies.
If a nuclear power plant has a capacity of 4 GW and a capacity factor of 90%, how much installed capacity of wind…
Mike H
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3
votes
5 answers
How much electricity does a 1 GW plant actually produce if the plant's efficiency is 20%?
I'm trying to see what percentage of total electricity demand will be met by solar power in some year x. Let's say I have data saying that the total electricity demand in country A is 1000 billion units (BU) in 2025. Let's also say that the…
WorldGov
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