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Regulating method for speed regulator mechanical open limit of generation set

A technology of generator set and adjustment method, which is applied in the direction of mechanical equipment, hydropower, engine components, etc., can solve the problems of generator set load lifting and other problems, achieve stable operation of the unit, small engineering amount, and prevent the governor from adjusting the unit. Effect

Active Publication Date: 2015-04-08
STATE GRID CORP OF CHINA +2
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Problems solved by technology

At present, after the unit is connected to the grid under the power generation condition, the governor will open the mechanical opening limit to 100% of the full opening value of the mechanical opening limit in one step, which will usually cause the generator set to have overload operation and the risk of lifting the machine

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  • Regulating method for speed regulator mechanical open limit of generation set

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis for limiting the present invention.

[0019] Example. A method for adjusting the mechanical opening limit of a generator set governor, comprising the following steps:

[0020] A. After the generator set is connected to the grid, set the initial value of the governor’s mechanical opening limit corresponding to the grid-connected initial load value to keep it within 63% of the full-open value of the mechanical opening limit;

[0021] B. When the power generation of the unit reaches a steady state, the mechanical opening limit of the governor is adjusted accordingly through the monitoring system according to the different water level differences between the upper and lower reservoirs;

[0022] In step B, the monitoring system obtains the water level difference between the upper and lower reservoirs in real time through the water level di...

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Abstract

The invention discloses a regulating method for a speed regulator mechanical open limit of a generation set. The method comprises the following steps of setting the speed regulator mechanical open limit value corresponding to a connected-grid initial load value after the generation set is connected to a grid, and enabling the speed regulator mechanical open limit value to be maintained in a scope of 63 percent of a mechanical open limit full open value; and when the generation of the set reaches a stable state, corresponding regulation is carried out on the speed regulator mechanical open limit through a monitoring system according to different up and down reservoir water level differences. According to the technical scheme, the speed regulator mechanical open limit is intelligently controlled by the monitoring system according to the change of an operating head, on the premise of a full load, the opening degree of guide blades is enabled to be in a controlled margin scope of the speed regulator mechanical open limit all the time when under regulation of different heads, so that the reduction on risk of an overload is realized, and the reliability of device operation is improved.

Description

technical field [0001] The invention is applied to the field of hydroelectric power generation, and in particular relates to a method for adjusting the mechanical opening limit of a governor of a generator set. Background technique [0002] In the prior art, in order to ensure the safe operation of the generator set, especially the hydraulic generator, it is usually necessary to set an opening that is slightly larger than the normal operating opening as a limit value, so the opening value of the unit is only It can be lower than this opening limit value, and cannot exceed this opening limit value. If it is a mechanical accelerator, there is a mechanical opening limit value. When adjusting the mechanical opening limit, the opening value corresponding to the adjusted limit position is called Governor mechanical opening limit, referred to as mechanical opening limit. At present, after the power generation unit is connected to the grid, the governor will open the mechanical ope...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38F03B15/14
CPCY02E10/226Y02E10/20
Inventor 范建强杨丽君朱中山
Owner STATE GRID CORP OF CHINA
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