Control Equipment - Hydropower

Revision as of 15:49, 27 May 2010

Overview:

Function:

Error creating thumbnail: convert: unable to open image `/var/www/ISWiki/prod/current/energypedia/images/0/0d/Mhp-scheme.jpg': No such file or directory @ error/blob.c/OpenBlob/2641.
convert: no images defined `/tmp/transform_42bc7e3-1.jpg' @ error/convert.c/ConvertImageCommand/3044.

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:
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_5509641-1.jpg' @ error/convert.c/ConvertImageCommand/3044.

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

.

Error creating thumbnail: convert: unable to open image `/var/www/ISWiki/prod/current/energypedia/images/5/57/Flow-control.jpg': No such file or directory @ error/blob.c/OpenBlob/2641.
convert: no images defined `/tmp/transform_442e7e4-1.jpg' @ error/convert.c/ConvertImageCommand/3044.

@@ Line 73: / Line 73: @@
 </o:shapelayout></xml><![endif]--> <!--StartFragment-->
-=== <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">Controll Elements</span>  ===
+=== <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
@@ Line 109: / Line 109: @@
 energy demand requires a mechanism which either regulates the water input into
 the turbine (=&gt; flow control) or<span style="">&nbsp; </span>by diverting excess energy from the consumer connection (=&gt;ballast load).&nbsp;</span><span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;"><!--[if !supportEmptyParas]-->
 </span>
-==== <span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">Flow control:</span>  ====
+==== <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;">regulates the amount of water into the
+<span style="font-size: 11pt; font-family: Tahoma; color: black;">usually electrical heaters in water or air. If energy
-turbine in order to match power output and power demand.[[Image:Flow-control.jpg|left|650x264px|principle flow control]]</span>
+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>  ====
+<!--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'>
 <v:imagedata src="file://localhost/Users/timchiaradia/Library/Caches/TemporaryItems/msoclip1/01/clip_image003.jpg"
 o:title="flow-controll"/>
-</v:shape><![endif]--><!--[if !vml]-->
+</v:shape><![endif]--></span><br> <!--EndFragment-->
-<!--[endif]-->
-</span>
-==== <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;">If energy demand is temporarily low, </span><span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">the controller sends </span><span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">excess energy to the Ballst Load. This are u</span><span lang="DE" style="font-size: 11pt; font-family: Tahoma; color: black;">sually electrical heaters in water or air.
-</span> <!--EndFragment-->
-*..
-*<br>
 [[Category:Hydro]]

Community

About

Help

Contact

Search

Main Page

About energypedia

Technologies

Energy Use

Cross Cutting Issues

energypedia consult

Search

Toolbox

Namespaces

Variants

Views

Actions

Control Equipment - Hydropower

Revision as of 15:49, 27 May 2010

Contents

Overview:

Function:

Control Elements

Load controler:
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_5509641-1.jpg' @ error/convert.c/ConvertImageCommand/3044.

Ballast load

Flow control

Log in / create account

Community

About

Help

Contact

Search

Main Page

About energypedia

Technologies

Energy Use

Cross Cutting Issues

energypedia consult

Search

Toolbox

Namespaces

Variants

Views

Actions

Control Equipment - Hydropower

Revision as of 15:49, 27 May 2010

Contents

Overview:

Function:

Control Elements

Load controler: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_5509641-1.jpg' @ error/convert.c/ConvertImageCommand/3044.

Ballast load

Flow control

Load controler:
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_5509641-1.jpg' @ error/convert.c/ConvertImageCommand/3044.