Reactor Differential Protection relay (87R) Testing

This article is to guide the responsible persons in conducting Reactor Differential Protection relay (87R) Commissioning and Testing.

Commissioning and testing the Reactor Differential Protection relay (87R) is a critical step in ensuring the reliable and accurate operation of the protection system.

Test Equipment: Secondary Injection test kit.

Safety Precautions: The following Safety precautions shall be taken in consideration prior, during and after conducting the test measurements.

• Safety tagging shall be implemented.
• Isolate the Area by Safety Warning Tape.
• Keep a Safe Distance from the device being tested.
• Wear Appropriate Personal Protective Equipment(PPE) Prior to starting any testing activity.
• Implementation of Proper Grounding.

Reactor Differential Protection relay (87R) Testing.

Here’s a comprehensive guide on how to commission and test the 87R relay for reactor protection:

1. Check Measurements & Final settings applied.

Below picture shows Ideal Setup on Directionality verification during Checking of Relay final setting for REACTOR.

2. Pickup/Drop-off Differential Current & Harmonics.

3. Bias Characteristic for Phase (R).

Repeat Test for yellow & blue phases.

By following above steps, you can ensure the successful commissioning and testing of the Reactor Differential Protection relay (87R), thereby enhancing the reliability and effectiveness of the reactor protection system. Remember to adhere to safety procedures and industry best practices throughout the commissioning and testing process.