Real-time software testing for microprocessor-based protective relays

1994 ◽  
Vol 9 (3) ◽  
pp. 1359-1367 ◽  
Author(s):  
N.I. Santoso ◽  
J.Y. Avins
Keyword(s):  
Software Testing ◽  
Real Time ◽  
Protective Relays

scholarly journals Real-Time Extended Interface Automata for Software Testing Cases Generation

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Shunkun Yang ◽  
Jiaqi Xu ◽  
Tianlong Man ◽  
Bin Liu
Keyword(s):  
Software Testing ◽  
Real Time ◽  
Temporal Information ◽  
Software Components ◽  
Modeling Languages ◽  
Braking System ◽  
Interface Automata ◽  
Complex Interactions ◽  
Testing Field ◽  
Information Description

Testing and verification of the interface between software components are particularly important due to the large number of complex interactions, which requires the traditional modeling languages to overcome the existing shortcomings in the aspects of temporal information description and software testing input controlling. This paper presents the real-time extended interface automata (RTEIA) which adds clearer and more detailed temporal information description by the application of time words. We also establish the input interface automaton for every input in order to solve the problems of input controlling and interface covering nimbly when applied in the software testing field. Detailed definitions of the RTEIA and the testing cases generation algorithm are provided in this paper. The feasibility and efficiency of this method have been verified in the testing of one real aircraft braking system.

Design and Application of Real-Time Embedded Software Simulation Testing Object Framework

2010 ◽  
Vol 143-144 ◽  
pp. 152-155
Author(s):  
Yong Feng Yin ◽  
Bin Liu ◽  
Hong Ying Ni
Keyword(s):  
Software Testing ◽  
Real Time ◽  
Embedded Software ◽  
Automated Testing ◽  
Generation Process ◽  
Practical Application ◽  
The Real ◽  
Test Script ◽  
Simulation Testing ◽  
Testing Field

At present, the automated real-time embedded software testing is a hot topic. Automated testing is essentially based on user programming and how to build test script quickly and effectively is one of the key problems to be resolved. In this paper, the object-oriented and framework technologies are introduced into the real-time embedded software testing field and the real-time testing object framework (RT-TOF) is studied firstly. And then, the test script generation process based on RT-TOF is proposed. Furthermore, the design of RT-TOF is put forward. Finally, the test script sample of the avionics embedded software system testing is given. Practical application of RT-TOF in engineering shows that the method proposed in this paper can improve the efficiency of automated testing greatly and the test script based on RT-TOF has better maintainability and reusability.

Validation of Software Testing Results for Real-Time Vehicle Control Software

1995 ◽  
Author(s):  
James B. Michael ◽  
Andrew C. Segal ◽  
Satyajit Patwardhan
Keyword(s):  
Software Testing ◽  
Real Time ◽  
Vehicle Control ◽  
Control Software

scholarly journals Development of Railway Protective Relay Simulator for Real-Time Applications

2019 ◽  
Vol 10 (1) ◽  
pp. 191 ◽  
Author(s):  
Joorak Kim ◽  
Gyu-Jung Cho ◽  
Jaewon Kim
Keyword(s):  
Real Time ◽  
Performance Test ◽  
Dynamic Testing ◽  
Circuit Breaker ◽  
Phase System ◽  
Protective Relay ◽  
Waveform Generation ◽  
Traction Power Supply System ◽  
Protective Relays ◽  
Traction Power Supply

Electric railways use a single-phase system, with the line comprising a trolley wire (TF) that supplies power to the load with a neutral wire and an autotransformer (AF) feeder to absorb the return current of the rail. Testing the performance of the protective relay that detects the fault of the traction power-supply system (TPSS) and operates the circuit breaker is very important. Until now, the performance test of protective relays for the TPSS has been conducted via a simple-steady test or using an expensive real-time simulator. However, under a fast-moving environment in which the load consumes a large amount of power, the protective relay must always detect faults and operate properly. This paper proposes a digital simulator that enables the dynamic testing of protective relays without using any steady test and expensive real-time simulators. This simulator includes both external waveform import and internal waveform generation functions. Users can test the operation of the protective relay by entering the waveform generated externally or internally into the protective relay. Additionally, it has the ability to monitor the operating protection elements and pickup time when the protective relay detects a fault and orders the circuit breaker trip.

scholarly journals PLC/HMI-Based Implementation of a Real-Time Educational Power System Protective Relays Platform

Electronics ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 118
Author(s):  
Jawad Radhi Mahmood ◽  
Ramzy Salim Ali ◽  
Raed A. Abd-Alhameed
Keyword(s):  
Power System ◽  
Real Time ◽  
Engineering Students ◽  
Operation Time ◽  
Human Machine Interface ◽  
Time Response ◽  
Programmable Logic ◽  
Protective Relaying ◽  
Machine Interface ◽  
Protective Relays

Engineering laboratories are key elements in engineering learning and are essential for a concrete understanding of engineering topics and experiments. These key laboratories are no longer just hardware-dependent, they are a creative combination of programmable hardware and also user-defined driving software. In this work, an educational power system protective relaying laboratory platform was designed and implemented using a programmable logic controller (PLC) and human–machine interface (HMI) in order to introduce engineering students to the operating mechanisms experimentally. It engaged the students in selecting settings and upgrading the inverse definite minimum time (IDMT) protection relays for overcurrent, overvoltage, undervoltage, and differential current. With the platform and the help of the HMI, the students mastered (or came close to mastering) the field of protective relays, especially those explicitly implemented in the platform. The students were also able to see the real-time response that is equivalent to the relay operation time of the protective relays under the various possible settings, and the kinesthetic learning that was involved gave them a deeper understanding of what is involved in relays upgrading.

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