Now showing 1 - 2 of 2
  • Publication
    Incorporating Line Security Constraints within Network Planning for Dynamic Line Rating Systems
    In order to maintain system security levels against a backdrop of generation and demand growth, network planners may require grid expansion and/or line modification measures. Traditionally, this has been achieved by uprating existing lines and constructing new lines. However, technical, environmental, cost and timeliness concerns can encourage the adoption of dynamic line rating (DLR) systems, as part of enhancing the utilisation of the existing network. Hence, a novel approach is presented here for planning reconductoring and DLR systems, relating to the implementation of security constraints. A multi-year stochastic mixed integer linear model for line N-1 short time security is developed, incorporating a unit commitment stage, which is later solved using Benders decomposition. An additional pre-optimisation stage, which can be efficiently parallelised, is introduced to largely support the burden of incorporating the security constraints. In addition, staged investments for individual lines, including applying DLR before later reconductoring, is investigated. The effectiveness of the proposed approach is shown for the IEEE RTS 24 bus system.
      14Scopus© Citations 3
  • Publication
    Enhancing network utilisation in wind-rich regions using coordinated dynamic line rating, energy storage and power flow control schemes
    Increasing wind energy utilisation, along with demand growth, are impacting on transmission system regional loading. Traditionally, uprating of existing lines and construction of new lines would have been common approaches to increase network capacity and reduce congestion. However, environmental, social, and technical challenges are encouraging network operators to apply measures which improve utilisation of the existing network, as part of future planning. Here, a mixed integer linear programming model is developed to integrate various alternative options, including dynamic line rating, energy storage systems and distributed static series compensation, into the network planning process. Using a multi-stage approach, co-optimised planning of these assets is studied and compared against a conventional reconductoring approach. The benefits of cooptimisation are shown for the IEEE RTS 24 bus system, with high wind contributions in selected regions.
    Scopus© Citations 1  11