Point-on-Wave performance when considering the statistical switching behaviour of the circuit breaker

Moreover, the policy is based on the main assumption of an ideal PoW switching performance.

However, no extended desktop studies or analyses have been performed to evaluate the effectiveness of the PoW switching when considering circuit breaker-related aspects such as pole scatter, switching times with respect to temperature conditions, and frequency of switching actions. Furthermore, system-related aspects (e.g., grid configuration, short circuit levels, and load levels) have not been considered either.

In the coming years, the Dutch HV and EHV transmission grids will undergo significant developments, and numerous crucial projects will be executed to achieve the determined goals.

It is expected that the need for PoW switching will significantly increase. As a first step towards the optimization and standardization of the PoW switching and other mitigation applications, an electromagnetic transient study was conducted concerning the PoW switching of HV capacitor banks and underground cable circuits. The study took into account the statistical nature of circuit breaker characteristics (the pole scatter and Rate of Decrease of Dielectric

Strength (RDDS) and associated impacts on the PoW switching performance for capacitor banks with various MVAr ratings and different cable circuit lengths. This article presents the findings of the capacitor bank analysis and it discusses their impact on the currently applied power quality policies. It also provides insights in the next steps that are required for standardisation purposes and for further research.