Fish Protection System (induced drift application) - Revision history

Bendikhansen at 14:43, 9 October 2020

2020-10-09T14:43:57Z

Bendikhansen at 13:11, 9 October 2020

2020-10-09T13:11:49Z

Bendikhansen at 13:08, 9 October 2020

2020-10-09T13:08:54Z

Bendikhansen at 13:07, 9 October 2020

2020-10-09T13:07:58Z

Bendikhansen at 13:02, 9 October 2020

2020-10-09T13:02:48Z

Bendikhansen at 12:59, 9 October 2020

2020-10-09T12:59:35Z

Bendikhansen at 11:58, 30 September 2020

2020-09-30T11:58:26Z

Bendikhansen at 13:52, 23 September 2020

2020-09-23T13:52:44Z

Bendikhansen: Created page with "link=[[Downstream fish migration]] {{Note|This technology has been enhanced in the FIThydro project! See Innovative technologies fro..."

2020-09-18T12:29:13Z

Created page with "right|150px|link=[[Downstream fish migration]] {{Note|This technology has been enhanced in the FIThydro project! See Innovative technologies fro..."

New page

[[file:icon_downstream.png|right|150px|link=[[Downstream fish migration]]]]
{{Note|This technology has been enhanced in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.|reminder}}
=Introduction=

=[[Methods, tools, and devices]]=

==During planning==

==During implementation==

==During operation==.

=Relevant MTDs and test cases=
{{Suitable MTDs for Fish Protection System (induced drift application)}}

=Classification table=
{{Fish Protection System (induced drift application)}}

=References=

[[category:Downstream fish migration measures]][[category:Measures]] [[Category:Enhanced in FIThydro]]

← Older revision		Revision as of 14:43, 9 October 2020
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−	~~[[file:icon_downstream.png\|right\|150px\|link=[[Downstream fish migration]]]]~~
	{{Note\|This technology has been enhanced in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.\|reminder}}		{{Note\|This technology has been enhanced in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.\|reminder}}

@@ Line 8: / Line 8: @@
 [[file:IDA_damage.png|thumb|250px|Figure 3: Comparison of observed damage rates for fish passage without (blue) and with IDA pilot device (red) for varying fish lengths (total length TL) in the 35 kW pilot.]]
-Date: 2018
+Date: 2020
-Developed by: VAW of ETH Zurich
+Developed by: TU Munich, Chair of Hydraulic and Water Resources Engineering, Franz Geiger
-Type: [[:Category:Devices|Device]], [[:Category:Methods|Method]]
+Type: [[:Category:Devices|Device]]
 =Introduction=
-The IDA technology provides an alternative approach to improve fish downstream passage at HPPs. Fish damage rates during turbine passage are reduced by specific fish behaviour manipulation prior and during passage using electric fields. The technique works without screening or bypass systems, no specific water losses occur or maintenance measures are required. Constructional efforts are very limited and therefore the IDA technology is well suited for retrofitting at existing HPPs.
+The IDA technology provides an alternative approach to improve fish downstream passage at HPPs. Fish damage rates during turbine passage are reduced by specific fish behavior manipulation prior and during passage using electric fields. The technique works without screening or bypass systems, no specific water losses occur or maintenance measures are required. Constructional efforts are very limited and therefore the IDA technology is well suited for retrofitting at existing HPPs.
 =Application=
-The exposure probabilities and intensities of blade strike and shear stresses to fish significantly depend on the actual location where fish enter and pass through the turbine. The technical implementation of the IDA device can be based generally on various behavioural stimuli like light, ultra-sound or electrical fields. Electrical fields are especially favourable due to the fish’s reaction on such. For low field strength, electric fields show repulsive effects on fish. For higher field strength, fish show automatic movement towards the anode (electro-taxis). Moreover, an electrically induced narcosis can occur and persist for a few seconds to a few minutes after field exposure (also called electro-narcosis) depending on the field strength and the exposure time.
+The exposure probabilities and intensities of blade strike and shear stresses to fish significantly depend on the actual location where fish enter and pass through the turbine. The technical implementation of the IDA device can be based generally on various behavioral stimuli like light, ultra-sound or electrical fields. Electrical fields are especially favorable due to the fish’s reaction on such. For low field strength, electric fields show repulsive effects on fish. For higher field strength, fish show automatic movement towards the anode (electro-taxis). Moreover, an electrically induced narcosis can occur and persist for a few seconds to a few minutes after field exposure (also called electro-narcosis) depending on the field strength and the exposure time.
 For the simplest implementation, the IDA technology builds up a continuous electrical field and guides the fish to the anode, an entry point in the vicinity of the hub, where survival rates are high (see figure 1). Additionally, forcing fish prior to turbine passage into random orientation, e.g. by narcosis, can significantly further support survival of fish during turbine passage. During the FIThydro project a first pilot of the IDA has been tested at a small 35 kW Kaplan turbine in the TUM Lab in Obernach, Bavaria (see figure 2).

@@ Line 4: / Line 4: @@
 =Quick summary=
-[[file:3d_fish_tracking_installation1.jpg|thumb|250px|Figure 1: 3D fish tracking system installed in the etho-hydraulic flume at VAW of ETH Zurich (source: VAW)]]
+[[file:IDA_fish_path.png|thumb|250px|Figure 1: Schematic sketch of fish passage through a vertical axis Kaplan turbine without (left) and with (right) IDA device.]]
+[[file:IDA_pilot.png|thumb|250px|Figure 2: IDA pilot at the 35 kW Kaplan turbine intake at the TUM Lab with the two ring-shaped copper electrodes ]]
 Date: 2018
@@ Line 14: / Line 15: @@
 =Introduction=
-=Application=
+For the simplest implementation, the IDA technology builds up a continuous electrical field and guides the fish to the anode, an entry point in the vicinity of the hub, where survival rates are high (see figure 1). Additionally, forcing fish prior to turbine passage into random orientation, e.g. by narcosis, can significantly further support survival of fish during turbine passage. During the FIThydro project a first pilot of the IDA has been tested at a small 35 kW Kaplan turbine in the TUM Lab in Obernach, Bavaria (see figure 2).
 =Relevant mitigation measures and test cases=
@@ Line 22: / Line 28: @@
 =Other information=
+TUM holds an EU patent for the IDA (EP3029203).
 =Relevant literature=
+FIThydro deliverable D3.4 available at https://www.fithydro.eu/deliverables-tech/
 [[category:Devices]][[Category:Enhanced in FIThydro]]

← Older revision		Revision as of 13:02, 9 October 2020
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	'''Note: This article will be finished with the submission of deliverable 3.3 and 3.4 in October, 2020'''		'''Note: This article will be finished with the submission of deliverable 3.3 and 3.4 in October, 2020'''

		+	=Quick summary=
		+	[[file:3d_fish_tracking_installation1.jpg\|thumb\|250px\|Figure 1: 3D fish tracking system installed in the etho-hydraulic flume at VAW of ETH Zurich (source: VAW)]]
		+
		+
		+	Date: 2018
		+
		+	Developed by: VAW of ETH Zurich
		+
		+	Type: [[:Category:Devices\|Device]], [[:Category:Methods\|Method]]
		+
		+	=Introduction=
		+
		+
		+	=Application=
		+
		+	=Relevant mitigation measures and test cases=
		+	{{Suitable measures for Fish Protection System (induced drift application)}}
		+
		+	=Other information=
		+
		+
		+	=Relevant literature=

−	~~=References=~~

	[[category:Devices]][[Category:Enhanced in FIThydro]]		[[category:Devices]][[Category:Enhanced in FIThydro]]

@@ Line 1: / Line 1: @@
 [[file:icon_downstream.png|right|150px|link=[[Downstream fish migration]]]]
 {{Note|This technology has been enhanced in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.|reminder}}
 =Quick summary=

@@ Line 2: / Line 2: @@
 {{Note|This technology has been enhanced in the FIThydro project! See [[Innovative technologies from FIThydro]] for a complete list.|reminder}}
 '''Note: This article will be finished with the submission of deliverable 3.3 and 3.4 in October, 2020'''
 =References=
-[[category:Downstream fish migration measures]][[category:Measures]] [[Category:Enhanced in FIThydro]]
+[[category:Devices]][[Category:Enhanced in FIThydro]]

@@ Line 9: / Line 9: @@
 ==During implementation==
-==During operation==.
+==During operation==
 =Relevant MTDs and test cases=