Wind and sun – an efficient combination

Cable pooling is the sharing of transmission infrastructure for wind (WF) and photovoltaic (PV) generation. It is transmitted over the same connection subject to the technically permissible load limitations of the power line (cable or overhead line) and/or the constraints of the connection agreement.

Wind generation has priority in the use of the connection and PV generation can complement this use. The continuous, trailing power control of the PV farm using the PV Supernode controller allows the permissible line (connection) load resulting from technical or contractual conditions to be maintained.

Cable pooling – ‘when it blows it doesn’t shine’.

According to a report by the Gdansk Energy Institute*, in summer there has not been a single case of GW and PV levels exceeding 70% of rated power simultaneously, while in winter both types of generation have never operated simultaneously at power levels exceeding even 50% of rated power. The level of neither generation type exceeds 20% of rated capacity for less than half of the cases (readings).

*Source: Correlation of wind generation and potential PV generation. Authors: Michał Bajor, Piotr Ziółkowski – Energy Institute Gdansk Branch, Grzegorz Widelski – Energa – Operator SA ‘Energia Elektryczna’ – April 2013

Cable pooling – how does it work?

The PV Supernode controller maximises the generation from the photovoltaic panels in real time so that the full capacity of the connection is used.

The device performs monitoring and control functions related to the operation of the photovoltaic installation, as required by the connection conditions. The flexibility of the PV Supernode’s operation guarantees the smooth acceptance of an installation using cable pooling by all national Distribution Network Operators.

PV Care is a cloud-based solution that works with the PV Supernode controller to make monitoring the performance of photovoltaic installations simple and effective.

PV Care provides unparalleled capabilities for quickly locating problems. Emergency notifications, sent to mobile devices, allow an instant response to restore proper operation.