Demonstration of Multi-vendor Protection Systems for Multiterminal VSC-HVDC Networks

Abstract

This paper outlines the demonstration of partially selective and fully selective HVDC protection systems using a simulated industrial case study HVDC network, hardware HVDC protection IED prototypes, and simulated HVDC circuit breaker models. A summary of results are presented demonstrating the performance if the protection IEDs and indicating successful operation of the overall HVDC protection system according to system-level indicators. The presented results are intended to increase confidence that HVDC protection systems for multivendor HVDC networks are near ready for full-scale industrial implementation.

Testing of an HVDC IED Prototype Using Field Recordings

“…Both the land station IED and the platform IED detect the cable fault. The speed of fault detection corresponds to similar results in industrial real-time simulation studies [6]- [8], and [13].…”

“…I&A: [6]- [8] A: [12], [13] -Integrated in a converter control and protection system I: [9] --Integrated in the HVDC circuit breaker control and self-protection I: [10] --…”

“…The IED sampling frequency was changed to match the fault recordings at 20 kHz as compared to 50 kHz in [6]- [8], [13], and [24], Note that higher sampling frequencies of at least 50 kHz are suggested in scientific literature [11]. Similarly, sampling frequencies of 96 kHz are stated in recently published DC measurement standards [23].…”

Grid interaction of multi‐VSC systems for renewable energy integration

“…The converters involved in the joint design are mainly those manufactured by a single vendor as this will ensure access to the detailed model of those converters. The proposed control design will facilitate the multi‐vendor realization of hybrid AC/DC systems as it will ensure design confidentiality by joint design of converters' controllers whose models are available and independent control design of converters whose models are confidential [22, 23].…”