ECN publication
Grote concentraties warmtepompen in een woonwijk en gevolgen elektriciteitsnetwerk
Published by: Publication date:
ECN Efficiency & Infrastructure 12-10-2010
ECN report number: Document type:
ECN-E--10-088 ECN publication
Number of pages: Full text:
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To enable the transition towards a sustainable energy system and to maintain the high reliability of the Dutch energy infrastructure, the infrastructures will need to be extended and renewed. One of the challenges for the Dutch electricity infrastructure is the embedding of high concentrations of heat pumps in currently built domestic residences.
Ground coupled heat pumps are recognized as being among the most efficient and comfortable heating and cooling systems today. Most heat pump are implemented as a so called bivalent installation. The basic demand of energy is covered by the heat pump. The peak load of the installation is covered by another device such as a gas boiler or an electrical resistance wire.
Since simultaneous demand of electricity occurs due to simultaneous demand of heat, high electricity peak loads in the low voltage network are expected.

This study focuses on residences with high peak loads at transformer stations in domestic residences, which are expected when heating is provided merely by heat pumps with additional electric heating. Two scenarios are studied: the event of a black start in the electricity system and high electricity demand on a day with a very low outdoor temperature. The simulation is performed with agents representing up to 100 dwellings based on PowerMatcher technology. The results demonstrate significant peak load reduction can be achieved at the expense of only a small decrease of comfort. This allows the usage of smaller load transformer units, reduces grid losses, benefits the lifetime of medium and low voltage transmission cables and thus to lower investments.

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