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Simulation method and system for speed regulation control of hydropower units

A technology of hydroelectric unit and simulation system, applied in general control system, control/regulation system, instrument, etc., can solve the problem of low simulation accuracy and achieve the effect of improving simulation accuracy and accurate simulation

Active Publication Date: 2020-03-24
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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Problems solved by technology

[0004] Based on this, it is necessary to provide a simulation method and system for speed regulation control of hydroelectric units to solve the problem of low simulation accuracy

Method used

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  • Simulation method and system for speed regulation control of hydropower units
  • Simulation method and system for speed regulation control of hydropower units
  • Simulation method and system for speed regulation control of hydropower units

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Embodiment Construction

[0018] The technical solution of the present invention will be described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, the present invention provides a hydroelectric unit speed regulation control simulation system, which may include:

[0020] RTDS real-time simulation device (Real Time Digital Simulator, real-time digital simulator), frequency measurement unit, water turbine governor and water diversion system and water turbine simulation device;

[0021] The RTDS real-time simulation device sends the first machine terminal three-phase voltage of the first hydroelectric unit to the frequency measurement unit, and sends the first guide vane stroke signal of the first hydroelectric unit and the first hydroelectric unit to the turbine governor. The first operating mode parameter of the unit; the frequency measurement unit measures the frequency of the three-phase voltage and outputs the first frequency signal of the first hydroelectric ...

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Abstract

The invention relates to a hydroelectric generating set speed regulation control simulation method and system. The system includes a RTDS real-time simulation apparatus, a frequency-testing unit, a water turbine governor, a water diversion system and a water turbine simulation apparatus. A water diversion pipeline water hammer effect model is established to simulate water diversion pipeline water hammer effects, an actual water turbine governor is subject to parameter and structure identification so as to establish a water turbine governor RTDS model which accords to actual operation mode and control mode. The simulation level of the governor is increased due to the RTDS model. Precise simulation of the characteristics of frequencies of the hydroelectric generating set is realized, and simulation precision is increased.

Description

technical field [0001] The invention relates to the technical field of electric power system simulation, in particular to a simulation method and system for speed regulation control of a hydroelectric unit. Background technique [0002] For the large-scale hydropower transmission system through high-voltage direct current transmission, the control of large-scale hydropower units is closely coupled with the DC control, and their mutual coordination characteristics will directly affect the safe and stable operation of the power grid, especially the characteristics of the speed control system of large-scale hydropower units have a significant impact on system frequency stability. The hydroelectric unit speed control system is a non-linear, non-minimum phase, complex closed-loop regulation system, which is composed of the regulation object and the governor. The adjustment objects include: pressure water diversion system and drainage system, hydraulic turbine, generator and unit ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B17/02
CPCG05B17/02
Inventor 袁艺郭琦李书勇李伟
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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