Control Equipment - Hydropower

Revision as of 08:10, 16 June 2010

Overview:

Function:

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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. alternatively 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 controller:
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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

.

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@@ Line 8: / Line 8: @@
 </o:shapelayout></xml><![endif]--> <!--StartFragment-->
-<span style="display: none;" id="1274973221030S">&nbsp;</span>
+<span id="1274973221030S" style="display: none;">&nbsp;</span>
-=== <!--[if gte vml 1]><v:shapetype id="_x0000_t75" coordsize="21600,21600"
+<!--[if gte vml 1]><v:shapetype id="_x0000_t75" coordsize="21600,21600"
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@@ Line 36: / Line 36: @@
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 <w:wrap type="square"/>
-</v:shape><![endif]--><!--[if !vml]--><!--[endif]--><span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">Function:</span>  ===
+</v:shape><![endif]--><!--[if !vml]--><!--[endif]--><span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">Function:</span><span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">[[Image:Mhp-scheme.jpg|right|560x386px|Elements of a Micro Hydro  Power Scheme]]</span>
-<span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">[[Image:Mhp-scheme.jpg|right|560x386px|Elements of a Micro Hydro  Power Scheme]]
-</span>
 ===  ===
-<span style="display: none;" id="1274973221741E">&nbsp;</span>
+<span id="1274973221741E" style="display: none;">&nbsp;</span>
 <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">Load- or Flow- controller
@@ Line 52: / Line 49: @@
 the energy output of a turbine/generator is constant as well. Power
 demand is
-usually fluctuating over the time (e.g. day/night). </span><span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">If supply is higher than demand, excess energy must be diverted, dumped. altrenatively the
+usually fluctuating over the time (e.g. day/night). </span><span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">If supply is higher than demand, excess energy must be diverted, dumped. alternatively the
 water flow can be reduced which results in less power output.</span><br>
@@ Line 77: / Line 74: @@
 <o:shapelayout v:ext="edit">
 <o:idmap v:ext="edit" data="1"/>
 </o:shapelayout></xml><![endif]--> <!--StartFragment-->
 === <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 controller:[[Image:Controler.jpg|right|350x141px]]</span>  ====
+==== <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">Load controller:[[Image:Controler.jpg|right|350x141px|Controler.jpg]]</span>  ====
 <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">Electronic circuit, which keeps output power constant in Frequency- and
@@ Line 133: / Line 130: @@
 <v:imagedata src="file://localhost/Users/timchiaradia/Library/Caches/TemporaryItems/msoclip1/01/clip_image003.jpg"
 o:title="flow-controll"/>
 </v:shape><![endif]--></span><br> <!--EndFragment-->
 [[Category:Hydro]]

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Control Equipment - Hydropower

Revision as of 08:10, 16 June 2010

Contents

Overview:

Control Elements

Load controller:
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Ballast load

Flow control

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Control Equipment - Hydropower

Revision as of 08:10, 16 June 2010

Contents

Overview:

Control Elements

Load controller:Error creating thumbnail: convert: unable to open image `/var/www/ISWiki/prod/current/energypedia/images/e/e6/Controler.jpg': No such file or directory @ error/blob.c/OpenBlob/2641. convert: no images defined `/tmp/transform_15a9bf8-1.jpg' @ error/convert.c/ConvertImageCommand/3044.

Ballast load

Flow control