MODELS: A new simulation tool in the emtp

Dube, Lucky; Bonfanti, I.

doi:10.1002/etep.4450020108

Cited by 77 publications

(9 citation statements)

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“…In this study, transient analysis is performed using the Alternative Transients Program (ATP) [18]. The matrix Y 00 in ( 8) is modeled in the ATP electrical circuit section, whereas the current sources i h -s (t) and i h -r (t), which represent the self-components of the time-dependent term, all of the mutual components, and past histories of the other node, are modeled by MODELS-controlled current sources [19]. The FDTD analysis model is illustrated in Fig.…”

Section: Formulation Of Transmission Line Modelmentioning

confidence: 99%

Circuit Model of an Overhead Transmission Line Considering the TEM‐Mode Formation Delay

Yamanaka

Nagaoka

Baba

2021

IEEJ Transactions Elec Engng

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When lightning strikes a transmission tower or overhead line, the lightning current generates a spherically expanding electromagnetic field. The propagation mode of an expanding electromagnetic wave is different from that of a transverse electromagnetic (TEM) wave, which is applied to the modeling of transmission lines. This paper presents an equivalent circuit model of an overhead transmission line that considers the TEM‐mode formation delay. The TEM‐mode formation delay is approximately represented by the first‐order delay functions in surge impedances and time delays in the mutual coupling from one line to the others. The proposed circuit model of the overhead line is introduced to the Alternative Transients Program version of Electromagnetic Transients Program using the MODELS language through a formulation in the phase domain based on Dommel's method. The results of the proposed model are validated through a comparison with the results of a three‐dimensional numerical electromagnetic analysis. Furthermore, the effect of the delay of the TEM‐mode formation on the voltages across the insulator strings of a lightning‐struck tower is described by referencing a previous experimental study conducted using an actual 500 kV transmission tower. © 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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Section: Formulation Of Transmission Line Modelmentioning

confidence: 99%

Circuit Model of an Overhead Transmission Line Considering the TEM‐Mode Formation Delay

Yamanaka

Nagaoka

Baba

2021

IEEJ Transactions Elec Engng

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“…The DOR is modeled on the ATP-EMTP (Center, 1992) platform via the MODELS programming language (Dubé and Bonfanti, 1992) and is composed of the subsystems described below.…”

Section: Directional Overcurrent Relaymentioning

confidence: 99%

Modeling and Validation of a Directional Overcurrent Relay as an Island Interconnection Device

Faria

Souza

Otto

et al. 2020

Anais Do Simpósio Brasileiro De Sistemas Elétricos 2020

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The growing number of decentralized generators in the distribution systems and the consequent increase in the penetration level in the networks have prompted the inclusion of this scenario in researches involving the planning of electrical power systems. The planning of protection systems for distribution networks considering distributed generators requires adaptations in the approach due to modifications in characteristics of the network, such as passivity and unidirectional power flow. Furthermore, the insertion of generators in distribution networks allows the implementation of new operation methods, such as the possibility of disconnecting some loads from the main feeder and supplying them through distributed generators. The island operation can improve the service continuity indexes, as well as reduce the costs of non-supplied energy. Although the island operation is widely proposed in the literature as a means to improve the system's reliability, the simulation of a protective device to intentionally island a region and the verification of its limitations is not. In this paper, we present the modeling of a directional overcurrent relay through ATP-EMTP, and its employment as a device for island interconnection, analyzing its zone of non-operation. CIGRE 14-bus test system is used to conduct short-circuit tests with the variation of resistance and type of fault applied. Theresults show the effectiveness of the device, which is able to identify all faults with real impact on the network, placing the region in island operation in less than 20 ms.

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“…(1). The control of the temperature-compensated current I d is more complicated, and is accomplished by a MODELS [7] block that inputs the temperature (T c ) and diode voltage (v d ) signals and calculates I d as per the exponential function of eq. (5).…”

Section: Model Built On Atpmentioning

confidence: 99%

An ATP Model for Photovoltaic Module Considering the Temperature Dependence

2018

Proceedings of 2018 the 8th International Workshop on Computer Science and Engineering

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ATP (Alternative Transients Program) is a widely used simulation program for the electric power network. It provides the Shockley diode component that allows the user to quickly build a photovoltaic (PV) module model that can be used for simulation of an electric grid containing solar power generators. However, the diode parameters are inputted through a dialog window and cannot be varied during the simulation, which limits the program's performance of simulating cases where the PV module temperature undergoes variations. This paper proposes a method to solve this shortcoming by inserting a temperature-compensated current source in the existing equivalent circuit of PV module. Results obtained by the proposed model and by the analytical calculation are compared for validation.

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MODELS: A new simulation tool in the emtp

Cited by 77 publications

References 0 publications

Circuit Model of an Overhead Transmission Line Considering the TEM‐Mode Formation Delay

Circuit Model of an Overhead Transmission Line Considering the TEM‐Mode Formation Delay

Modeling and Validation of a Directional Overcurrent Relay as an Island Interconnection Device

An ATP Model for Photovoltaic Module Considering the Temperature Dependence

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