Scipediacontent: Scipediacontent moved page Draft Content 105728472 to 238,295lr

2021-03-22T23:45:41Z

Scipediacontent moved page Draft Content 105728472 to 238,295lr

Scipediacontent: Created page with " == Abstract == Pumped storage plants (PSPs) have achieved rapid development and deployment worldwide since the penetration of intermittent renewable energy sources (RES). Hy..."

2021-03-22T23:44:15Z

Created page with " == Abstract == Pumped storage plants (PSPs) have achieved rapid development and deployment worldwide since the penetration of intermittent renewable energy sources (RES). Hy..."

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== Abstract ==

Pumped storage plants (PSPs) have achieved rapid development and deployment worldwide since the penetration of intermittent renewable energy sources (RES). Hydraulic transient analysis in the PSP, to obtain the control parameters such as extreme water hammer pressure, is vital to the safe design of water conveyance system. Empirically, simultaneous load rejection (SLR) is commonly accepted as the control condition for extreme water hammer, while it is not completely true for the PSP. Employing theoretical analysis and numerical simulation, this study systematically investigates the effects of geometric characteristics on the extreme water hammer, and reveals the mechanism leading to the maximum spiral case pressure (SCP) during a two-stage load rejection (TLR) process. The results indicate that the extreme water hammer pressure is closely related to geometric characteristics of the water conveyance system, performing the allocation of the water inertia time constant of the main and branch pipelines. When the water inertia time constant in the branch pipe is dominant (&eta

1 &gt

0.24 for example), the maximum SCP will occur in TLR conditions rather than SLR. Moreover, the maximum SCP is almost the same, providing the water inertia time constants of both the main and branch pipelines are kept constant.

Document type: Article

== Full document ==
<pdf>Media:Draft_Content_105728472-beopen1329-5482-document.pdf</pdf>

== Original document ==

The different versions of the original document can be found in:

* [http://dx.doi.org/10.3390/en12152854 http://dx.doi.org/10.3390/en12152854] under the license https://creativecommons.org/licenses/by

* [https://www.mdpi.com/1996-1073/12/15/2854/pdf https://www.mdpi.com/1996-1073/12/15/2854/pdf] under the license http://creativecommons.org/licenses/by/3.0/

* [https://www.mdpi.com/1996-1073/12/15/2854 https://www.mdpi.com/1996-1073/12/15/2854],
: [https://doaj.org/toc/1996-1073 https://doaj.org/toc/1996-1073] under the license cc-by

* [https://www.mdpi.com/1996-1073/12/15/2854 https://www.mdpi.com/1996-1073/12/15/2854],
: [https://www.mdpi.com/1996-1073/12/15/2854/pdf https://www.mdpi.com/1996-1073/12/15/2854/pdf],
: [https://ideas.repec.org/a/gam/jeners/v12y2019i15p2854-d251298.html https://ideas.repec.org/a/gam/jeners/v12y2019i15p2854-d251298.html],
: [https://academic.microsoft.com/#/detail/2963729407 https://academic.microsoft.com/#/detail/2963729407]

* [https://www.mdpi.com/1996-1073/12/15/2854/pdf https://www.mdpi.com/1996-1073/12/15/2854/pdf],
: [http://dx.doi.org/10.3390/en12152854 http://dx.doi.org/10.3390/en12152854]

under the license https://creativecommons.org/licenses/by/4.0/

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Scipediacontent: Scipediacontent moved page Draft Content 105728472 to 238,295lr

Scipediacontent: Created page with " == Abstract == Pumped storage plants (PSPs) have achieved rapid development and deployment worldwide since the penetration of intermittent renewable energy sources (RES). Hy..."