Nuclear power unit excitation and PSS parameter optimization setting method enhancing system damping

A technology for nuclear power units and enhancement systems, which is applied in electrical digital data processing, and control of generators and electrical components through magnetic field changes. The effect of positive damping

Active Publication Date: 2015-01-28
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0004] At present, there are no related reports on the optimization research and field test of the excitation and PSS parameters of nuclear power units in China. The existing parameters of the excitation system of nuclear power units mostly adopt the parameters provided by the manufacturer. On this b

Method used

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  • Nuclear power unit excitation and PSS parameter optimization setting method enhancing system damping
  • Nuclear power unit excitation and PSS parameter optimization setting method enhancing system damping
  • Nuclear power unit excitation and PSS parameter optimization setting method enhancing system damping

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Embodiment Construction

[0025] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0026] Such as figure 1 As shown, a nuclear power unit excitation and PSS parameter optimization tuning method for enhancing system damping of the present invention comprises the following steps,

[0027] Step S1: Analyze the modal diagram of the oscillation mode of the simulated power grid, and select the nuclear power unit whose parameters are to be optimized: through digital-analog hybrid simulation, perform frequency-domain eigenvalue analysis and time-domain disturbance simulation on the simulated power grid, and extract the dynamic stability characteristics of the interconnected power grid and oscillation information;

[0028] Step S2: Analyze the excitation system model of the nuclear power unit, and determine the parameters to be optimized: the excitation system of the nuclear power unit adopts a two-machine brushless excitation ...

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Abstract

The invention relates to a nuclear power unit excitation and PSS parameter optimization setting method enhancing system damping. The method integrates digital-analog hybrid simulation and an on-site test method. Firstly, by means of digital-analog hybrid simulation, frequency domain eigenvalue analysis and time domain disturbance simulation are carried out on a simulation grid, dynamic invariant features and important oscillation information between interconnected network areas are extracted, weight sequencing is carried out on the unit by means of a participation matrix and PF module value, and unit excitation and PSS parameter optimization research is carried out on the nuclear power unit with the largest participation factor; by means of sensitivity analysis, main optimization parameters of an engine excitation system are determined, an optimization interval suitable for AVR and PSS parameters is determined by carrying out simulation research in multiple operation modes, and finally, by means of on-site test research, stability and effectiveness are determined when unit optimization parameters are operated in a power plant are determined. The method can be more suitable for actual grid operation features and can be more suitable for on-site actual units, and guarantees stable operation of a system.

Description

technical field [0001] The invention belongs to the field of electrical engineering science, and in particular relates to a nuclear power unit excitation and PSS parameter optimization setting method for enhancing system damping. Background technique [0002] The power supply and its auxiliary equipment that supply the excitation current of the synchronous generator are collectively called the excitation system, which generally consists of two parts: the excitation regulator and the PSS. The excitation regulator controls the output of the excitation power unit according to the input signal and the given adjustment criterion, and provides the excitation current to the rotor of the synchronous generator. The excitation regulator itself is a hysteresis unit that produces negative damping, and its electromagnetic torque △Me is negatively projected on the △ω axis. The control method of PSS is that in the automatic excitation regulator AVR, in addition to the voltage deviation △U...

Claims

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Application Information

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IPC IPC(8): H02J3/24G06F17/50
CPCH02J3/00H02J2203/20H02P9/14Y02E60/00
Inventor 黄文英宋少群陈峰王官宏杨桂钟江伟张永树何凤军李晶唐晓骏于大海李可文余秀月
Owner STATE GRID CORP OF CHINA
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