ARTMS™

The ARTMS service offers accurate and efficient relay testing. The ARTMS service tests your relays using a comprehensive automated set of test plans which generate test waveforms that closely match actual system conditions.

The conventional method for testing a relay begins with simplified calculations to establish test points. The limitation of this approach is that simplified calculations do not allow for actual system conditions (including contingencies) to be considered. Obtaining test points can be a repetitive and time-consuming process and is often limited to the number of contingencies or varying conditions that can be considered for test. The ARTMS service uses a different approach.

The ARTMS service offers simplified and automated relay testing based on complete system test plans generated using industry standard COMTRADE files.

• Improved technical accuracy – generate standard COMTRADE waveforms versus simplified setpoint calculations.
• Flexible – customizable automation makes testing many different scenarios feasible.
• Compatibility with existing tools – COMTRADE files of waveforms outputs for each scenario are generated and can play back for the relay under test.

Technical Improvement from the Existing Method

• COMTRADE files include sinusoidal and decaying DC components.
• Generated fault currents and voltages are similar to those in real-world systems, due to higher accuracy in equipment modeling in utility short circuit software.
• The service is appropriate for day-to-day testing of settings/logic and commissioning.

Process Improvement from the Existing Method

• The relay commissioning process can be further standardized.
• The process becomes faster and more cost and time efficient.
• Several COMTRADE files can be generated in one run.
• Tens or hundreds of test scenarios can be applied, and the relay can be tested more thoroughly.

Real-world use of this service at a large North American utility has yielded significant improvements to the relay commissioning process including:

• Preemptive detection of setting errors: bus zones, stated capacity, supervision logic, and protection settings.
• Removal of potential human error in calculation of test points.
• Reduction in commissioning cost of 30-40%.
• Broad acceptance among field personnel.
• Easy integration with existing relay commissioning processes.

The relay testing process can be integrated further via industry-standard testing platforms as the management, automated execution, and record-keeping of test routines.