New Software Provides In-Depth Testing of Protective Relays

April 17, 2012
RelayLabTest enables users to assess the overall performance of protection devices under realistic operating conditions.

RelayLabTest, a new test software from OMICRON, enables users to assess the overall performance of protection devices under realistic operating conditions. Test signals are calculated on the basis of a network simulation and directly output on OMICRON’s CMC devices. RelayLabTest is easy to use and requires no special simulation or programming skills. It already complies with the requirements for simulation tests according to the future standard IEC 60255-121 for distance protection devices.

The setting up and execution of comprehensive tests is convenient, as RelayLabTest offers unique modeling and test automation functions. The grid editor allows the user to model complex power networks within minutes. Any network or fault parameter can be varied automatically thus making the software ideal for manufacturers’ type testing or acceptance testing undertaken within utilities. The creation of thorough tests with a large number of test shots takes only a few mouse-clicks.

RelayLabTest enables the user to define extensive test sequences in order to simulate complex fault scenarios such as cross-country and evolving faults. These sequences may include multiple fault incidents and breaker operations in response to the relay commands. This not only allows for the simulation of sophisticated auto-reclosure cycles but also offers the possibility to perform iterative closed-loop tests of one or more protection relays.

Analyzing the results in detail Automated assessment functions facilitate the quick evaluation of individual test shots and the overall test results. Statistical analyses such as SIR diagrams and trip time histograms provide in-depth insights on the relay algorithm behavior. Two kinds of general graphical representations with various customization options are available. All test results and statistical data can be easily exported to external applications.

The unique integration of simulation, testing and analysis enables relay manufacturers to perform comprehensive type testing faster and easier than ever before. Utilities benefit from the ability to analyze the behavior of protective equipment in individual grid configurations.

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