Hydropower station set local control unit (LCU) active pulse adjusting system

A technology of pulse regulation and hydropower station, which is applied in the direction of single-net parallel feeding arrangement, etc., can solve problems such as the uncertainty of the relationship between power and opening function, and achieve the effect of meeting the requirements of rapid stability and reliability and improving applicability

Active Publication Date: 2016-09-21
CHINA YANGTZE POWER
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Problems solved by technology

[0004] The invention provides an active power pulse regulation system for the LCU of a hydropower station unit, which solves the problem of uncertainty in the relationship between the power and the opening function caused by the change of the water head in the opening regulation mode, and establishes a function model of active power and pulse width to meet the monitoring requirements of large hydropower stations. The system requires rapid stability and reliability for the active power adjustment of the unit

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  • Hydropower station set local control unit (LCU) active pulse adjusting system
  • Hydropower station set local control unit (LCU) active pulse adjusting system
  • Hydropower station set local control unit (LCU) active pulse adjusting system

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Embodiment Construction

[0045] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0046] A hydropower station unit LCU active power pulse regulation system. The hydropower station unit LCU active power pulse regulation system uses the interpolation algorithm and the correction ratio algorithm to quickly adjust the unit active power in the power analog pulse regulation mode or the opening regulation mode. It includes the following modules, such as figure 1 shown.

[0047] ① Obtaining unit active power target value module: Its function is mainly to use the computer monitoring system platform to obtain the unit active power target value by using three methods: operator setting, power plant AGC, and automatic startup and shutdown initial value setting.

[0048] ② Obtain power adjustment mode module: its function is mainly to use the computer monitoring system platform to automatically set the unit power adjustment mode as active power gi...

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Abstract

A hydropower station set LCU active pulse adjusting system disclosed by the present invention comprises a module of obtaining a set active target value, a module of obtaining a power adjusting mode, a module of obtaining opening mode initial values by an interpolation algorithm, a module of obtaining an adjustment pulse width by a modified proportional algorithm and a set active monitoring module. According to the present invention, and according to the head change, the interpolation algorithm is used to calculate the opening mode initial values comprising a set active current value, an adjustment target value, an adjustment dead zone value and a pulse adjustment proportion coefficient K value, and the modified proportional algorithm is used to calculate a power pulse width. The hydropower station set LCU active power pulse adjusting system is provided for the first time, and satisfies the set active adjustment rapid stability and reliability requirements of a large-scale hydropower station monitoring system.

Description

technical field [0001] The invention relates to an LCU active power pulse regulating system of a hydropower station unit, which belongs to the field of computer monitoring systems of hydropower stations. Background technique [0002] At present, the active power adjustment system of the unit LCU of the computer monitoring system of the hydropower station can adjust the unit power in three ways: active analog given mode, active analog pulse mode and active opening adjustment mode. The adjustment algorithm of the unit LCU active power analog given mode is simple and unified, and all adopt the direct analog output mode; the adjustment algorithm of the unit LCU active power pulse mode and active power opening adjustment mode is more complicated, and the reliability cannot be well guaranteed during use. [0003] This invention proposes for the first time the LCU active power pulse regulation system of the hydropower station unit, uses the interpolation algorithm to establish the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/50
CPCH02J3/50
Inventor 陈辉瞿卫华李辉
Owner CHINA YANGTZE POWER
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