Questions tagged [power-generation]

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).

Filter by
Sorted by
Tagged with
2 votes
4 answers
114 views

High voltage three phase power lines and ground danger

In Europe, most power lines have three cables for each phase and no neutral (usual UK line pictured): The three-phase AC generator at the power plant probably use a Δ-phase winding (simplified): (...
user avatar
  • 121
0 votes
2 answers
57 views

What kind of motor is needed to make this work?

Not exactly sure what kind of AC or DC motor would be needed to make this. Is it even a realistic idea to make electricity by using a motor as a generator? https://www.youtube.com/watch?v=V3NtSp6aAbs
user avatar
0 votes
0 answers
54 views

Gasoline generator + Peltier configuration

I have a DIY cooler box with Peltier element 12V/3A/27 watts and want to connect via power supply to gasoline generator with output 600W at 5A max. Would that be a problem and not supply my Peltier ...
user avatar
0 votes
1 answer
96 views

What exactly is power? And what limits its generation?

I know that P=I*V, and that when power is constant then current is inversely proportional to voltage. In case of transformers, stepping down voltage increases current. I was told that this because of ...
user avatar
1 vote
1 answer
39 views

Rated nominal power of generation with respect to load condition

In the electric power grid generation and consumption must be always the same. For sure the load change continuously in time, therefore an equal generation change must always correspond to the load ...
user avatar
-1 votes
1 answer
331 views

Do razor blades work as solar panels?

I want to know if there is any scientific background to the use of razor blades as solar panels. Would someone please explain how this composition of blades will generate electricity when put in ...
user avatar
3 votes
2 answers
508 views

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 ...
user avatar
2 votes
2 answers
319 views

What if we attach a TEG between a freezer and stove?

I have been thinking about this, that if we attach one part of a thermoelectric generator between a freezer and other part on a stove. This would create a temperature difference and generate ...
user avatar
0 votes
1 answer
73 views

How can grid frequency dropping lead to grid failure [closed]

From what I understand, frequency variation indicates generation-load imbalance. In particular, when frequency decreases the load demand is greater than generation. Wouldn't this just lead to the ...
user avatar
  • 53
0 votes
1 answer
65 views

Total power output a generator is able to produce [closed]

I have an oversized generator, it has 150 kVA and I am only using 25 kW. If the power factor is determined by the load, how can I determine the total surplus of energy that I could generate if I would ...
user avatar
  • 5
-1 votes
2 answers
104 views

Electric generator fuel consumption while load is increased

I am working on a gas plant that produces its own energy with an electogren group that operates with LPG as fuel. I noticed that this plant is oversized. It has a capacity of 150 kVA but the plant ...
user avatar
  • 5
0 votes
2 answers
114 views

Computer simulation of a syncroscope

I want to create a computer simulation of a Synchroscope. I have searched for descriptions of how a Synchroscope works but none of them unambiguously answer my questions about how to recreate the ...
user avatar
1 vote
1 answer
34 views

How do generation schedules / load schedules work on a power grid?

I've noticed that some generating stations have "generation schedules" and similar schedules also exist for load distribution stations. They usually have a MW amount telemetered to the ISO (...
user avatar
  • 476
0 votes
1 answer
34 views

Generator Charger Grounding

A while back I sketched up a small charge control circuit that can be used with either a wind or solar generator scenario. This is only meant for smaller 12V 10-30W /hobbyist/home made generators and ...
user avatar
  • 42
0 votes
0 answers
19 views

Simulation of DFIG input voltage to stator

I'm currently looking into the modelling of a DFIG in simulink (however I have seen models in other programs as well) and I'm slightly confused as to why there is a 3-phase voltage input to the stator ...
user avatar
2 votes
2 answers
108 views

System load vs. hourly system load (HSL)

Real-time electricity usage in Texas is graphed by ERCOT, the Electric Reliability Council of Texas. Today's graph can be found here, with a screen-grab below: Note the difference between the lines ...
user avatar
  • 123
0 votes
0 answers
61 views

Electricity generation with diamagnetism

Will a strong diamagnetic material like bismuth allow for electricity generation if the copper coils are on the other side of the bismuth plate from the magnet? Imagine the following three layer ...
user avatar
0 votes
1 answer
74 views

What happens when I overload an induction generator

I am trying to generate power with a small induction generator. The RPM is constant. What will hapen when the rated input torque is exceeded?
user avatar
  • 3
2 votes
3 answers
151 views

Whats the justification to determine the phase sequence?

I have been told many times that one way to determinate the phase sequence of a three phase system is to use two resistances and one capacitor (or inductor) in star (wye) connection, then connect two ...
user avatar
  • 510
5 votes
1 answer
246 views

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 ...
user avatar
  • 476
0 votes
4 answers
1k views

Generating electricity: Does wire thickness for magnetic induction matter?

I know that the strength of the magnetic field and the speed by which the conductor passes the magnetic field have an effect on magnetic induction for the voltage output on a generator. I also know ...
user avatar
2 votes
1 answer
78 views

Governor Droop Response (Demand Balancing)

I am having trouble figuring out how to solve the governor droop response question in a textbook I am studying for a certification. This is the question: A 100 MW generator at 50 MW output that has 5%...
user avatar
0 votes
0 answers
75 views

Water wheel turning a fan motor and voltmeter shows approximately 300 VDC. How to charge batteries from that?

I’m trying to create something to produce enough power to keep a bank of batteries (wired for 24 volt configuration) charged. Basically I'm using six to eight 12 volt batteries, wired to a 24 VDC to ...
user avatar
2 votes
2 answers
445 views

Effects of low voltage on power grids?

I understand that if load is suddenly ramped up on a power grid: A sudden increase in current is caused by adding these parallel loads to the circuit. The current increase thus increases the torque ...
user avatar
  • 476
1 vote
1 answer
199 views

Generator synchronization to grid and angle difference

Following conditions are needed for generation synchronization : 1 Phase Sequence 2 Voltage Magnitude 3 Frequency 4 Phase Angle I have question about Phase angle assuming that the frequency is the ...
user avatar
  • 199
3 votes
3 answers
389 views

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 ...
user avatar
  • 187
17 votes
3 answers
2k views

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 ...
user avatar
  • 189
-4 votes
1 answer
330 views

Pulleys to make energy? [closed]

Would it be possible to use several pulleys so a smaller motor could cause a larger motor to spin, thus causing more electricity to be outputted than there was inputted. Looking at some high school ...
user avatar
1 vote
1 answer
139 views

How Single Pole Switching of Circuit Breaker can improve the transient stability of the Power System?

There are numerous methods we can use to improve the transient stability of the power system. Visualization of methods like using fast excitation system, High-speed governors or using dynamic ...
user avatar
0 votes
2 answers
873 views

Why do most ship alternators generate 440V even though onboard appliance use 220V?

The main switchboard of a typical ship is as follows: I was expecting a system where the phase voltage is 220V and line voltage is 380V. But cannot find an explanation and the link between generating ...
user avatar
  • 11.3k
3 votes
1 answer
123 views

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 ...
user avatar
0 votes
2 answers
52 views

Difference between the terms voltage generation and power generation

What exactly is the difference between 'generating a voltage' 'generating a current' and 'generating power'? Are all these terms linked in some way? And for which situations do I use each term? For ...
user avatar
  • 715
0 votes
0 answers
50 views

Performance of thermoelectric generator

I would like to build a self-powered device on the surface of a vehicle without modifying it. It is possible to generate enough power though thermoelectric generator by the temperature difference of ...
user avatar
0 votes
2 answers
62 views

How Can I Efficiently Adjust Difficulty on a Pedal Generator without Mechanical Gears?

I'm charging a battery using pedal power, like this: pedals -> brushless generator -> rectifier -> charge controller -> battery I'd like to be able to ...
user avatar
0 votes
2 answers
52 views

Electric frequency conversion from very low frequencies

I have designs for diy home generator that at the scale I’m currently building will output a very small amount of power at a very low frequency, varying between <1 and ~2 hertz using 2 pole magnets....
user avatar
-2 votes
1 answer
165 views

Is it possible to generate electricity by the manipulation of either diamagnetic or paramagnetic materials with a stationary magnet and coil?

Consider the following ideas I had which should help experts here to help or better answer my question: Electric Generator idea: In short, imagine the following: A sealed glass donut shaped container ...
user avatar
0 votes
2 answers
41 views

In a transmission line, does the real current interact with reactive impedances?

simulate this circuit – Schematic created using CircuitLab According to the diagram above, if real currents do not interact with reactive impedances, then reactive loads should not worry the ...
user avatar
0 votes
0 answers
72 views

How does lamp lights up in synchronising unit?

I recently learnt about the synchronisation of alternators using Two bright and one dark lamp method. In this arrangement, lamps are connected between two sources. We done the practical using an ...
user avatar
  • 354
0 votes
1 answer
113 views

diesel generator load calculation? [closed]

I notice in my father’s farm , there is a diesel generator that powers 30 hp water pump as well as water pressure control or ( water pusher something like this) that is also 20 hp. This is the ...
user avatar
  • 153
2 votes
1 answer
300 views

Return path for current flow in transmission lines?

We know that all current flow in loops, i.e. if they start at a source they must come back to the source. So for transmission lines, does the current that flow through our appliances in our homes go ...
user avatar
  • 715
0 votes
1 answer
756 views

What happens to the Real and Reactive power when I increase the excitation current in a 3-Phase Synchronous Generator?

Basically my doubt is, for the same load, why does the Real power remain constant when I increase the excitation current?
user avatar
  • 187
1 vote
1 answer
520 views

Why do large power stations' generators rotate at ≥ 1800 RPM?

Some time ago, over some beers with a fellow EE who's much more experienced than me, we were discussing the unique challenges present in utility-scale power generators, like the ones in nuclear power ...
user avatar
  • 4,907
0 votes
2 answers
117 views

Improving a permanent magnet alternator. Replacing magnets / reducing air gap

In the case of a 3 phase PMA radial flux type, used as a wind turbine, with magnets on the surface of the rotor, is it safe or even doable to stack another magnet with the same geometry on top of the ...
user avatar
  • 19
-1 votes
1 answer
55 views

Power limiter for 1 kW hydro turbine

I have a question about designing a solar-hydro energy system, as we ran into a problem in the implementation phase. We have 1 kW pv plant connected directly to a charge controller, and the 1 kW hydro ...
user avatar
  • 113
6 votes
3 answers
4k views

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 ...
user avatar
  • 354
1 vote
1 answer
78 views

Mixed solar and wind farm

Is there any reason why solar and wind farms cannot share the same piece of land? The number of solar arrays that would have to be omitted to make way for the turbines should be relatively few. The ...
user avatar
0 votes
3 answers
2k views

What does "reconductor" or "reconductoring" refer to?

This is a term that I seem to remember hearing in reference to electric transmission. I'm pretty sure it has something to do with upgrading a set of transmission lines to carry more current, but I'm ...
user avatar
  • 117
0 votes
2 answers
102 views

How is power demand variation of supercomputers handled at power plants

When a supercomputer is given work and all processors begin work there would be a large spike in demand. Do large supercomputers communicate with power stations to notify them of demand changes from ...
user avatar
1 vote
1 answer
45 views

Generator data for synchronizing

I have two DG sets which are to be synchronized on to the same AC bus and needless to say, they must share load. I have gathered some parametric data which I felt would decide how well these can work ...
user avatar
  • 475
2 votes
1 answer
249 views

How much installed capacity of wind or pv would be required to match the output of a 4GW 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 4GW and a capacity ...
user avatar
  • 129