Active management provides a method to extend capacity for generation connections to distribution networks through the coordinated control of multiple network components in realtime. Identifying principles and strategies for active network management that hold for all situations will provide support to network operators and planners and form the basis for a new paradigm in utility strategy concerning the connection of distributed generation. The authors build upon previous work regarding the initial specification and economic evaluation of an active powerflow management (APFM) scheme concerned with facilitating increased generator connections. Operating margins have been identified as an essential element of the APFM scheme for the provision of network security and play a significant role in determining the economic viability of generation connected under the APFM scheme. An approach to the definition of the operating margins required to trigger generator output regulation (trimming) and tripping is introduced. These concepts are demonstrated through a case study using one of the UK generic distribution system models. The analysis considers technical, regulatory and economic factors, resulting in practical recommendations for future work and the identification of the factors that affect the implementation of such a schem
The problem of exchanging data between two or more organizations in a format that is accessible and understandable by each is a universal problem. Furthermore, the problem of translating or accessing data in the correct format for applications using proprietary data formats is challenging. Legacy software applications may endure, for some time given, regulatory expenditure pressures on electricity system operators and these require data translators (importer/exporter) and access facilities. The basis of this paper is that the Electric Power Research Institute (EPRI) common information model (CIM) in eXtensible Markup Language (XML) represents the first stage in a revolution of data exchange and manipulation for power systems. This paper explores the problem of translating data in the CIM XML format to the required format for such legacy power system analysis applications. This paper discusses solutions to some of the challenges in data translation, and illustrates how these solutions can be implemented.Index Terms-CIM XML, power system data translation.
The Northern Isles New Energy Solutions (NINES) project is addressing the current and future energy needs of the Shetland Isles by demonstrating the integration of low carbon energy sources using smart grid technology. In so doing, NINES will facilitate a major step towards a low carbon future for Shetland whilst leading and informing the wider international low carbon energy transition. The principal objective of the NINES project is to enable more renewable connections in a geographical area that is deemed to have the richest renewable energy resources in Europe. As such, the electrically islanded Shetland power network will see significant changes in operation as district heating schemes, domestic space and water heating systems, energy storage systems and new wind connections are developed, deployed and integrated under an active network management system. This paper discusses the role of interdependent system models in providing essential inputs to active network management (ANM) design and configuration. Early results from model development and testing are presented with specific focus on the stability limits for the connection of additional renewable generation when operating in conjunction with frequency responsive demand.
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