大型交直流并联输电网网损优化理论及其在南方电网中的实现

发布时间：2018-03-06 09:03

本文选题：最优潮流　切入点：网损优化　出处：《中国电机工程学报》2014年01期 　论文类型：期刊论文

【摘要】：交直流并联电网的网损优化问题与传统无功优化问题有很大不同,纯交流电网主要通过合理配置系统无功以降低网损,而交直流并联电网则是通过调整直流功率改变有功潮流分布,从而实现降低全网网损。尤其对于远距离、大容量、交直流并联送电的南方电网,调整交直流潮流分布降低主网网损则具有更加重要的意义。然而实际运行中主要依靠经验调整交直流潮流,亟需一种能够指导交直流输电网损优化的理论方法和适用于大规模系统的网损分析工具。该文系统分析交直流潮流分布影响网损的机理,提出相应网损优化最优潮流模型和最优等网损微增率原则。同时提出适用于大区电网规模的实用计算方法,在保留系统完整拓扑模型基础上实现算法的高准确性、稳定性和快速性。所提出的交直流并联电网网损分析理论和实用方法,已经应用于南方电网实际调度运行工作,并取得了较大的降损效益。
[Abstract]:The network loss optimization problem of AC / DC parallel power network is very different from the traditional reactive power optimization problem. The AC / DC parallel power network is to change the distribution of active power flow by adjusting DC power, so as to reduce the loss of the whole network, especially for the Southern Power Grid with long distance, large capacity and AC / DC parallel power transmission. It is more important to adjust the distribution of AC / DC power flow and reduce the loss of main network. However, in actual operation, the adjustment of AC / DC power flow mainly depends on experience. There is an urgent need for a theoretical method to guide the optimization of AC / DC network losses and a tool for analyzing the loss of large scale systems. The mechanism of the influence of AC / DC power flow distribution on network losses is systematically analyzed in this paper. The corresponding optimal power flow model and optimal equal loss incremental principle are proposed. A practical calculation method suitable for large area power network scale is proposed to achieve the high accuracy of the algorithm on the basis of preserving the complete topological model of the system. The proposed theory and practical method of network loss analysis for AC / DC parallel power network have been applied to the actual dispatching operation of Southern Power Grid and have achieved great loss reduction benefits.
【作者单位】：中国南方电网系统运行部;香港大学电机电子工程系;
【分类号】：TM714.3

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