Excitation system full-function-performance simulation system based on MATLAB

Abstract

The invention discloses an excitation system full-function-performance simulation system based on an MATLAB. The system comprises an electricity generator, auxiliary power, a main transformer, a short trouble setting unit, a circuit, an AVR unit, a PSS unit, a machine end voltage effective value computing module, a stator overcurrent limiting unit, a rotor overcurrent limiting unit and a low-excitation limiting unit. Some parameters of the electricity generator are input to the AVR unit. The AVR unit outputs adjusted electricity generator voltages to the electricity generator. Output of the electricity generator is connected to auxiliary power and the main transformer. Output of the main transformer is connected with a power grid through the circuit. Output of the main transformer is connected with the short trouble setting unit. The stator overcurrent limiting unit, the rotor overcurrent limiting unit and the low-excitation limiting unit carry out control processing on the parameters of the electricity generator. According to the system, an excitation system simulation model which is complete in function and practical is established first through the MATLAB, the connecting modes of the units are flexible and selectable and strong in representativeness, and simulation requirements of excitation regulators of different structures can be met.

Description

technical field [0001] The invention relates to a simulation system of an excitation system, in particular to a full-function characteristic of the excitation system based on MATLAB. Background technique [0002] At present, the PSASP and BPA simulation calculation programs commonly used in power systems are not open to users, so it is inconvenient to develop and design simulation models; the types of simulation test signals, access points, and output observations of intermediate variables are restricted, which cannot meet the requirements of relevant simulation tests. Requirements; the excitation system-related limitation unit model types are incomplete (currently only over-excitation limitation and under-excitation limitation models are provided), but due to inconsistency with the actual situation, the model is not perfect, and the physical meaning of the parameters is not clear, so it has not been able to be used. Contents of the invention [0003] The purpose of the pr...

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Problems solved by technology

[0002] At present, the PSASP and BPA simulation calculation programs commonly used in power systems are not open to users, so it is inconvenient to develop and design simulation models; the types of simulation test signals, access points, and output observations of intermediate variables are restricted, which cannot meet the requirements of relevant simulation tests. Requirements; the excitation system-related limitation unit model types are incomplete (currently only over-excitation limitation and under-excitation limitation models are provided), but due to the inconsistency with the actual situation, the model is not perfect, and the physical meaning of the parameters is not clear, it has not been able to be used

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