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ACTIVE NETWORKS FOR THE ACCOMMODATION OF DISPERSED GENERATION

ACTIVE NETWORKS FOR THE ACCOMMODATION OF DISPERSED GENERATION. What’s happening to the network ?. Slowly but steadily “embedded” generators are starting to be added. The existing technical and regulatory structure of distribution networks is incapable of supporting this evolution.

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ACTIVE NETWORKS FOR THE ACCOMMODATION OF DISPERSED GENERATION

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  1. ACTIVE NETWORKS FOR THE ACCOMMODATION OF DISPERSED GENERATION

  2. What’s happening to the network ? Slowly but steadily “embedded” generators are starting to be added. The existing technical and regulatory structure of distribution networks is incapable of supporting this evolution • Customers are used to having a “stiff” network but this tends to become too expensive • Generation increases fault levels • Security of supply requires different approach • Voltage stability may become an issue

  3. The answer: a different concept of network operation message 1: The network of the future does not supply power; it supplies connectivity message 2: The “infinite network” as customers used to know it no longer exists

  4. Improve reliability by interconnection • The network becomes a NETwork at last ! • There is always more than one path • Active management of “congestion” • Prevent propagation of an overload by isolating the “sick” part of the network

  5. Transmission Network Network subdivided into cells acting as ‘independent’ islands (example) HV Cell MV Cell

  6. We’re not there yet: R&D agenda • More dynamic reliability model • Efficient planning requires a mature market for embedded generation. How to bridge the present immature phase ? • Tools for voltage control • Algorithms to (re-)configure networks automatically for optimal power flow and losses • Concepts for protection • Cost of system services to be quantified

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