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Method for starting a hydroelectric turbine

A technology for hydroelectric turbines and runners, applied in hydroelectric power generation, reaction engines, engine components, etc., which can solve the problems of power grid consumption, unsatisfactory alternatives, and increased installation costs

Inactive Publication Date: 2020-08-04
GE RENEWABLE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] However, this alternative is also unsatisfactory
[0023] In fact, the dehydration mode requires a dedicated investment to flush the water from the hydroelectric turbine, which increases the installation cost
[0024] In addition, in dehydration mode, the hydroelectric unit consumes electricity from the grid

Method used

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  • Method for starting a hydroelectric turbine
  • Method for starting a hydroelectric turbine
  • Method for starting a hydroelectric turbine

Examples

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Embodiment Construction

[0077] figure 1 An example of a hydroelectric turbine 10 to which the present invention is applicable is shown in . The turbine can be realized in a hydroelectric power plant with one reservoir, preferably two reservoirs (one upstream and one downstream), using water heights of eg at least 20m or 100m up to 1000m.

[0078] The reservoir may be a sufficiently large reservoir that it is not necessary for the operator of the hydroelectric power plant to operate the power plant for environmental reasons, such as regulation of water levels or the flow of rivers connected to the power plant or reservoir.

[0079] The reservoir can be located on the upstream side of the power plant, or the downstream side, or the reservoir can be located on the upstream side of the power plant and the reservoir can be located on the downstream side thereof.

[0080] Due to the large amount of water available in the reservoirs, equipped hydroelectric power plants can be used as bulk energy storage by...

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PUM

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Abstract

The invention concerns a method for starting a hydroelectric turbine (10) provided with a runner (6) mechanically coupled to a shaft line (8), a distributor (4) comprising leak tight guide vanes to control a flow of water to said runner, a spiral case (12) for supplying water to said runner, said spiral case comprising a duct connected to a main inlet valve (14). The method comprises: a) a step ofbalancing pressures on both sides of said main inlet valve (14), and of at least partially opening said main inlet valve (14), while the leak-tight guide vanes of the distributor (4) are closed, water pressurized at an upstream level being present in said spiral case and at said distributor (4); b) a step of opening the leak-tight guide vanes of the distributor (4).

Description

technical field [0001] The present invention relates to a method for starting a hydroelectric turbine (also sometimes referred to as a hydroelectric turbine). In particular, the invention relates to a method for starting a hydroelectric turbine comprising a generator, the rotor of which is driven in rotation by the turbine. The invention also aims to propose a method of starting a hydroelectric turbine in a faster manner than prior art methods. Background technique [0002] To ensure grid stability and / or prevent grid outages, grid balancing must be achieved between electricity generation and electricity consumption. [0003] A hydroelectric power plant has a reserve of electricity via a water reserve contained in a reservoir, which can be supplied as required by starting hydroelectric turbines to compensate for any changes in consumption and / or production of electricity. [0004] In this regard, the time response for providing such a power reserve is therefore a key facto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B15/00F03B15/06F03B3/18F03B11/00F03B13/08
CPCF03B3/183F03B11/004F03B13/08F03B15/00F03B15/005F03B15/06Y02E10/20F03B3/186F05B2260/85F03B3/04
Inventor G.雷诺Q.阿卢安
Owner GE RENEWABLE TECH