Double-channel cross redundancy system for digital microcomputer governor of large-scale hydroturbine

A redundant system and water turbine technology, applied in the direction of machines/engines, fluid pressure actuation system components, mechanical equipment, etc., can solve the problem of limited safe operation of water turbines, achieve strong fault tolerance and improve reliability

Active Publication Date: 2006-02-15
THREE GORGES NENGSHIDA ELECTRIC
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Problems solved by technology

However, these are only limited to the redundant design of some mechanical components and

Method used

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  • Double-channel cross redundancy system for digital microcomputer governor of large-scale hydroturbine
  • Double-channel cross redundancy system for digital microcomputer governor of large-scale hydroturbine

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Experimental program
Comparison scheme
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Embodiment Construction

[0012] The microcomputer regulator automatically adjusts the main channel + the mechanical hydraulic system automatically adjusts the main channel Implementation method:

[0013] 1>. Automatic main channel: the microcomputer regulator automatically adjusts the main channel 1. The control core adopts dual PLCs that can work independently, with adaptive variable parameter PID adjustment rules, programmable controller (microcomputer regulator A in figure 1 The label in is 5 and the microcomputer regulator B is in figure 1 The label in 6) adopts: Quantum programmable controller of Schneider Company, CPU model is 140CPU43412A type, word length is 32 bits, main frequency is 66MHz, and it is installed in the speed control cabinet. Each microcomputer regulator has independent CPU, I / 0 channel, sensor, frequency measurement and power supply

[0014] The mechanical hydraulic system automatically adjusts the main channel by BOSCH proportional servo valve 13, emergency stop solenoid valv...

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Abstract

This invention relates to the twin channel across system of the microcomputer speed controller in a digital water wheel with large-scale, which includes an actively adjusting main channel and an assistant channel, wherein the actively adjusting main channel includes the microcomputer regulators A and B with two redundancies connecting and a main channel with the mechanical hydraulic pressure system, wherein the actively adjusting assistant channel includes a microcomputer regulator C and an assistant channel with mechanical hydraulic pressure or the mechanical(electric) handle structure; when the main channel is working, the assistant channel doesn't affect the main channel's work, but it tracks the main channel, and the adjusting aim of its guide vane receiver is completely identical with the main channel, which can realize the none-trouble switch of the main or assistant channel. The cross redundancy twin PLC control structure composed of the correspondence and software has a high ability to allow false, which can allow the fault of the different named module in the two stand-alones, and the crossing structure can make the speed adjusting device work normally.

Description

technical field [0001] The invention relates to a water turbine speed regulation control device, in particular to a digital large-scale water turbine microcomputer speed governor dual-channel cross redundancy system. Background technique [0002] Most of the hydropower stations in my country are equipped with mechanical-hydraulic, electro-hydraulic or microcomputer turbine governors. With the rapid development of control theory and computer technology, the research work of turbine governor has been continuously developed. The mode of the currently dominant microcomputer governor is: microcomputer regulator + electro-hydraulic servo system. Due to the support of microcomputer technology, the control strategy of water turbine has been extensively studied. The control strategy has gradually developed from the previous PI type control to PID, variable energy number PID, adaptive control, self-improving control, robust control, predictive control, Varia...

Claims

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Application Information

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IPC IPC(8): F03B15/00F15B21/00
CPCY02E10/226Y02E10/20
Inventor 魏守平胡梦蛟李红胡乙进
Owner THREE GORGES NENGSHIDA ELECTRIC
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