Difference between revisions of "Control Equipment - Hydropower"
From energypedia
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</o:shapelayout></xml><![endif]--> <!--StartFragment--> | </o:shapelayout></xml><![endif]--> <!--StartFragment--> | ||
| − | === <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;"> | + | === <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">Control Elements</span> === |
| − | ==== <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">Load controler</span> ==== | + | ==== <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">Load controler:[[Image:Controler.jpg|right|350x141px]]</span> ==== |
<span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">Electronic circuit, which keeps output power constant in Frequency- and | <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">Electronic circuit, which keeps output power constant in Frequency- and | ||
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energy demand requires a mechanism which either regulates the water input into | energy demand requires a mechanism which either regulates the water input into | ||
the turbine (=> flow control) or<span style=""> </span>by diverting excess energy from the consumer connection (=>ballast load). </span><span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;"><!--[if !supportEmptyParas]--> | the turbine (=> flow control) or<span style=""> </span>by diverting excess energy from the consumer connection (=>ballast load). </span><span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;"><!--[if !supportEmptyParas]--> | ||
| − | </span> | + | </span> |
| − | ==== <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;"> | + | ==== <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">Ballast load</span> ==== |
| − | <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;"> | + | <span style="font-size: 11pt; font-family: Tahoma; color: black;">usually electrical heaters in water or air. If energy |
| − | + | demand is temporarily low the excess energy is converted into heat.</span><span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;"> | |
| + | </span> | ||
| − | <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;"><!--[if gte vml 1]><v:shape id="_x0000_i1025" | + | ==== <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">Flow control</span> ==== |
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| + | <!--StartFragment--><span style="font-size: 11pt; font-family: Tahoma; color: black;">regulates the | ||
| + | amount of water into the turbine in order to match power output and power | ||
| + | demand</span><!--EndFragment--> | ||
| + | |||
| + | <span style="font-size: 11pt; font-family: Tahoma; color: black;">.</span> <!--EndFragment--> <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">[[Image:Flow-control.jpg|left|650x264px|principle flow control]]</span><span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;"><!--[if gte vml 1]><v:shape id="_x0000_i1025" | ||
type="#_x0000_t75" style='width:321pt;height:131pt'> | type="#_x0000_t75" style='width:321pt;height:131pt'> | ||
<v:imagedata src="file://localhost/Users/timchiaradia/Library/Caches/TemporaryItems/msoclip1/01/clip_image003.jpg" | <v:imagedata src="file://localhost/Users/timchiaradia/Library/Caches/TemporaryItems/msoclip1/01/clip_image003.jpg" | ||
o:title="flow-controll"/> | o:title="flow-controll"/> | ||
| − | </v:shape><![endif]--> | + | </v:shape><![endif]--></span><br> <!--EndFragment--> |
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| − | </span> | ||
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[[Category:Hydro]] | [[Category:Hydro]] | ||
Revision as of 15:49, 27 May 2010
Overview:
Function:
Load- or Flow- controller ensure that the power output does not exceed the power demand (e.g. 230V, 50 Hz).
If flow of water in a MHP-station is constant
the energy output of a turbine/generator is constant as well. Power
demand is
usually fluctuating over the time (e.g. day/night). If supply is higher than demand, excess energy must be diverted, dumped. altrenatively the
water flow can be reduced which results in less power output.
In case of more power demand than supply the controler cuts of
the of demand line.
Load controller are placed between generator output and the consumer line.
Control Elements
Load controler:
Electronic circuit, which keeps output power constant in Frequency- and Voltage- parameters.
Fluctuating energy demand requires a mechanism which either regulates the water input into the turbine (=> flow control) or by diverting excess energy from the consumer connection (=>ballast load).
Ballast load
usually electrical heaters in water or air. If energy demand is temporarily low the excess energy is converted into heat.
Flow control
regulates the amount of water into the turbine in order to match power output and power demand
.
