Investigation into the influence of environmental conditions on power system ratings
Investigation into the influence of environmental conditions on power system ratings
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环境条件对电力系统额定值影响的调查
DOI：
10.1243/09576509jpe718
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
C. Berry
中科院分区：
文献类型：
--
作者：
A. Michiorri;P. Taylor;S. Jupe;C. Berry
摘要 本文介绍的研究旨在帮助配电网络运营商采用实时热评级 (RTR) 系统。由于风速等环境条件的复杂性，电力系统额定变化的利用具有挑战性。采用 RTR 系统可以克服这一挑战，并提供明显的好处，例如增加分布式发电 (DG) 的适应性并避免组件损坏或过早老化。使用集总参数分量模型进行仿真来研究环境条件对架空线、电缆和电力变压器额定值的影响。主要调查结果显示，架空线路、电缆和电力变压器的平均额定值分别为静态额定值的 1.70 至 2.53、1.00 至 1.06 和 1.06 至 1.10 倍。由于架空线路被发现具有最大的评级开发潜力，因此研究了环境条件对四种架空线路类型的影响，结果表明 RTR 系统的价值取决于位置。此外，在所考虑的案例中，通过部署 RTR 系统可以实现 DG 的额外年发电量为 54%。
Abstract This article presents research that seeks to assist distribution network operators in the adoption of real-time thermal rating (RTR) systems. The exploitation of power system rating variations is challenging because of the complex nature of environmental conditions such as wind speed. The adoption of an RTR system may overcome this challenge and offers perceived benefits such as increased distributed generation (DG) accommodation and avoidance of component damage or premature ageing. Simulations, using lumped parameter component models, are used to investigate the influence of environmental conditions on overhead line, electric cable, and power transformer ratings. Key findings showed that the average rating of overhead lines, electric cables, and power transformers ranged from 1.70 to 2.53, 1.00 to 1.06, and 1.06 to 1.10 times the static rating, respectively. Since overhead lines were found to have the greatest potential for rating exploitation, the influence of environmental conditions on four overhead line types was investigated and it was shown that the value of an RTR system is location dependent. Furthermore, the additional annual energy yield from DG that could potentially be accommodated through deployment of an RTR system was found to be 54 per cent for the case considered.