In the field of power system protection, we encounter situations when a short circuit causes a small or no fault current flow at the terminals of the protected apparatus. These cases require protection elements of high sensitivity so that all faults are promptly cleared, reducing further damage to the protected apparatus and limiting danger to the public and the environment. In this webinar, we will discuss:
• Applications of negative-sequence differential protection for lines and transformers.
• Applications of negative-sequence directional elements for turn-to-turn fault protection in reactors and stators.
• Two new protection principles based on negative-sequence elements for generator turn-to-turn protection.