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Comparative analysis of dynamic line rating models and feasibility to minimise energy losses in wind rich power networks

机译：动态线路额定值模型的比较分析和在风能丰富的电网中最大程度降低能量损失的可行性

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摘要

Wind power generation has indicated an exponential increase during last two decades and existing transmission network infrastructure is increasingly becoming inadequate to transmit remotely generated wind power to load centres in the network. The dynamic line rating (DLR) is one of the viable solutions to improve the transmission line ampacity during high wind penetration without investing on an additional transmission network. The main objective of this study is to identify the basic differences between two main line rating standards, since transmission network service providers (TNSPs) heavily depend on these two standards when developing their line rating models. Therefore, a parameter level comparison between two line rating models is a timely requirement, in particular for high wind conditions. Study has shown that roughness factor causes a significant difference between both standards. In particular, the IEEE model indicates more conservative approach due to this parameter. In addition, solar heat-gain calculation has also resulted in significant difference in ampacity ratings between two standards. A case study was developed considering a wind rich network and it has shown that by implementing DLR in wind rich regions, it can effectively reduce line overloading incidents and accommodate wind power flows in the network without any curtailment. Moreover, ability of DLR to reduce network energy losses is also demonstrated and emphasised the importance of selecting suitable DLR candidates to minimise energy losses in the network.
机译：在过去的二十年中，风力发电量呈指数级增长，并且现有的传输网络基础设施越来越不足以将远程生成的风力发电量传输到网络中的负载中心。动态线路额定值（DLR）是一种可行的解决方案，可以在高风速穿透时提高传输线路载流量，而无需投资额外的传输网络。这项研究的主要目的是确定两个主要线路额定值标准之间的基本差异，因为传输网络服务提供商（TNSP）在开发其线路额定值模型时严重依赖这两个标准。因此，两个线路额定值模型之间的参数级别比较是及时的要求，尤其是在大风条件下。研究表明，粗糙度因子会导致两个标准之间的显着差异。特别地，由于该参数，IEEE模型指示了更为保守的方法。此外，太阳能热增益计算还导致两个标准之间的载流量额定值显着不同。进行了一个考虑富风网络的案例研究，结果表明，通过在富风区域实施DLR，它可以有效减少线路过载事件，并在不减少任何费用的情况下将风电流量容纳在网络中。此外，还展示了DLR降低网络能量损耗的能力，并强调了选择合适的DLR候选对象以最小化网络中的能量损耗的重要性。

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