Market consultation MS measuring on metal-enclosed RMU's

Within Alliander - we operate a significant number of existing medium-voltage switchgear installations - commonly referred to as Ring Main Units (RMUs) - which we intend to retrofit with measurement capabilities (see Figure 1 below for an example). The majority of our RMUs are of the following types: ABB SafePlus - Eaton Xiria and Holec SVS. To make our electricity grid more flexible and resilient - we want to measure several electrical parameters at these installations - including: ● Current (target accuracy: 1%) ● Voltage (target accuracy: 0.5%) ● Phase angle between voltage and current (target accuracy: 3°) To achieve this - we plan to install voltage and current sensors on each cable connection and connect these sensors to an Intelligent Electronic Device (IED) - which collects - processes...