Tuesday, May 26, 2009

Megger Enhances MPRT To Test To IEC 61850

Megger has introduced an IEC 61850 option for the MPRT, together with the new MGC (Megger Goose Configurator) software package. This allows the MPRT to test to IEC 61850, the new international communication standard for electricity substations.

The MGC software allows users to import parameters from configuration files in SCL (Substation Control Language) format, and use them to configure the MPRT test set to subscribe to pre-selected Goose (Generic Object Oriented Substation Event) messages. Data from the received messages is assigned to the binary inputs of the test set, so that the messages effectively take the place of hard-wired connections to the binary outputs of the relays.

This arrangement provides for manual and automatic relay testing, using either the integral Touch View Interface (TVI) of the MPRT test set, or Megger's AVTS relay-testing software. The MGC software can also assign the binary outputs of the MPRT to Goose messages to allow the simulation of circuit-breaker status. The TVI can be used to perform high-speed trip and reclose timing tests, and fully automatic testing is supported using test files created in Megger's AVTS relay-testing software package.

Other functions available with the IEC 61850-enabled MPRT test set are high-speed trip and reclose timing testing via the AVTS Dynamic Control feature, and manual high-speed timing tests using the Touch View Interface, for which the MPRT fully satisfies the timing requirements of the IEC 61850-5 standard, Type 1A, Class P 2/3. All existing Megger MPRT protective relay test-sets can be upgraded to provide IEC 61850 support, while retaining their full functionality for testing conventional relay installations.

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