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首页> 外文会议>2015 5th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies >A new approach to 110kV HV distribution grid voltage control based on coupling numerical analysis
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A new approach to 110kV HV distribution grid voltage control based on coupling numerical analysis

机译：基于耦合数值分析的110kV高压配电网电压控制新方法

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摘要

To avoid 110kV distribution network bus voltage conducting above the over-limit during holidays especially in the Spring Festival, a new voltage regulation method based on electric coupling degree is introduced. The strategy takes example by circuit breaks in practical operation and accordingly alters key backup lines' connection modes under the restraint of line thermal stability, transformer capacity and switching power flow on boundary when traditional voltage regulation measures are used up to obtain the optimized voltage. It proves the typical heterogeneous scale-free network features of power grid and uses electric coupling degree to identify the key substations which own the closest connections with other buses in the network, according to the results, changing corresponding backup lines from hot-spare into cold standby mode. Compared with circuit break depend on experiences in actual production, the proposed method has obvious advantage of improving the net-wide voltage with the least cut of backup lines, which is physical well-defined and convenient. The simulation results of practical grid validate the proposed strategy and show the effectiveness of optimizing the net-wide voltage profile which possess of good application prospects.
机译：为避免节日期间特别是春节期间110kV配电网母线电压超限，提出了一种基于电耦合度的电压调节新方法。该策略以实际操作中的断路为例，当传统的电压调节措施被用来获得最佳电压时，在线路热稳定性，变压器容量和边界处的开关功率的约束下，相应地改变了关键备用线路的连接方式。它证明了典型的电网异构无标度网络特征，并利用电耦合度来识别与网络中其他总线最接近的关键变电站，并根据结果将相应的备用线路从热备用变为冷备用待机模式。与断路取决于实际生产中的经验相比，该方法具有明显的优点，即可以在不减少备用线的情况下提高全网电压，并且物理定义明确且方便。实际电网仿真结果验证了所提策略的有效性，表明优化全网电压分布的有效性，具有良好的应用前景。

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