#PSPICE IPULSE GENERATOR#
Purpose – Loading the impulse-voltage generator by test object can affect the generated voltage waveform. Evaluation of the simulation over several semesters with 80 students is very positive in terms of their developing confidence in and understanding of this simulation. In the first part of the paper the theoretical aspect of simulation is described, and in the second part the simulation method and results are described.
#PSPICE IPULSE HOW TO#
The paper shows how to simulate the partial discharge in solid insulation in order to teach students the basics of partial discharge, and to practice analyzing the test results.
It is therefore essential to detect their presence in a nondestructive control test.This paper describes an efficient method of teaching partial discharge of solid insulation, to undergraduate students of power system groups in electrical engineering departments, as a part of a high voltage course for senior undergraduate students. Although the magnitude of such discharges is usually small, they cause progressive deterioration and may lead to ultimate failure. The model can be used in scientific work or in the educational process as an auxiliary tool for visual demonstration of the conditions for the electric breakdown in long air gaps.Įlectric discharges that do not completely bridge the electrodes are called partial discharge. The proposed model allows to predict the volt-time characteristic of various air gaps in a virtual experiment. As experimental data, the experimentally obtained expression for the volt-time characteristic of the rod-rod air gap subjected to the positive polarity voltage pulses is used. It is determined that the simulation relative error does not exceed 10%. Simulation results are compared with experimental data. Wherein, the moments of breakdown of the air gap both at the front and at the tail of the applied voltage pulse are measured. Using the model, the breakdown time of the air gap is determined when subjected to the lightning pulses of positive polarity with different amplitudes. The article shows how to create the model of electrical breakdown of the air gap in the evaluation version of the Micro-Cap 11 circuit simulator. With the help of Kind's equal-area criterion in the circuit simulation programs it is possible to create the model of electrical breakdown of any air gap, including the rod-rod configuration. To create such model, it is not enough to take into account only the functional relationship between the breakdown voltage and the spacing between the electrodes. The lower bound of this interval corresponds to the beginning of the streamer propagation, and the upper bound corresponds to the time when the streamer reaches the opposite electrode.
One of the most problematic places in this task is determination of the time interval of the streamer propagation. The following sources are available in SPICE simulation.The object of the research is the circuit simulation model of a streamer breakdown of a rod-rod air gap when exposed to positive voltage pulses. In Multisim, these sources are available in the Sources group of the master database. These inputs are used as voltage or current signals that drive circuitry during simulation. SPICE allows users to specify input that varies in form. You can also easily swap components to evaluate designs with varying bills of materials (BOMs). By simulating your circuits, you can detect errors early in the process, and avoid costly and time consuming prototype reworking.
#PSPICE IPULSE SERIES#
The series is divided among a number of in-depth detailed articles that will give you HOWTO information on the important concepts and details of SPICE simulation.Ĭircuit simulation is an important part of any design process.
The series is a set of tutorials and information on SPICE simulation, OrCAD pSPICE compatibility, SPICE modeling, and other concepts in circuit simulation.įor more information, see the SPICE Simulation Fundamentals main page.
#PSPICE IPULSE FREE#
The NI SPICE Simulation Fundamentals series is your free resource on the internet for learning about circuit simulation.
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