Adaptive Distance Protection for Lines Connecting Converter-Interfaced Renewable Plants

Adaptive ground distance protection for UPFC compensated transmission lines: A formulation considering the fault resistance effect

This paper presents a mathematical deterministic adaptive distance protection formulation for UPFC compensated transmission lines. The proposed formulation is developed using a phase component approach and considers and compensates for various UPFC operation conditions and non-zero fault resistances. The proposed methodology is completely adaptive and independent of system characteristics (such...

A New Adaptive High Speed Distance Protection Scheme for Power Transmission Lines

This paper describes a new, high-speed protection for EHV transmission lines. The presented scheme also performs well on series compensated lines. The High speed distance protection (ZMFPDIS) function is a six zone full scheme protection with three fault loops for phase-to-phase faults and three fault loops for phase-to-earth faults for each of the independent zones, which makes the function su...

Stability, Protection and Control of Systems with High Penetration of Converter Interfaced Generation

Effects of CT and VT Connection Point on Distance Protection of Transmission Lines with FACTS Devices

This paper presents the effects of instrument transformers connection points on the measured impedance by distance relays in the presence of Flexible Alternating Current Transmission System (FACTS) devices with series connected branch. Distance relay tripping characteristic itself depends on the power system structural conditions, pre-fault operational conditions, and especially the ground ...

Emulated Inertia and Damping of Converter-Interfaced Power Source

—Converter-interfaced power sources (CIPSs), like wind turbine and energy storage, can be switched to the inertia emulation mode when the detected frequency deviation exceeds a pre-designed threshold, i.e. dead band, to support the frequency response of a power grid. This letter proposes an approach to derive the emulated inertia and damping from a CIPS based on the linearized model of the CIPS...