Power system stability increase by secondary voltage regulation applied to the South Africa transmission grid
Power system stability increase by secondary voltage regulation applied to the South Africa transmission grid
复制标题
DOI：
10.1109/pes.2010.5589313
复制
发表时间：
2010-07
期刊：
影响因子：
--
通讯作者：
S. Corsi;F. De Villiers;R. Vajeth
中科院分区：
文献类型：
--
作者：
S. Corsi;F. De Villiers;R. Vajeth
随着电力市场竞争的加剧，电网高效、稳定、安全运行的要求使得输电网的电压控制变得至关重要。一个有潜力的解决方案是通过自动快速控制来提高辅助服务的有效性。该论文描述了适合该框架的广域电压调节（V-WAR）。 V-WAR 基于二次和三次电压调节（SVR；TVR）。目前ESKOM-TAP正在研究这种V-WAR在南非（SA）的应用。 V-WAR是一种分层闭环控制系统，通过对现场主要无功功率资源实施创新、及时和协调的控制，超越了传统的调节和紧急控制类型。所提出的 V-WAR 很简单，具有易于实现的控制结构，并提供了实现智能目标的方法，而没有它就永远无法实现。描述了 SVR 应用，显示其对 SA 输电网中的试点节点、控制电站和区域进行了稳健的选择。介绍了 SVR 的控制环动态和特性，并强调了由于其有效功能而实现的重要目标。论文的主要问题是电压和角度稳定性的显着改善以及在电压接近最大连续值时节省电网运行。与其他相关结果（已在 IEEE-PES GM2010 上提出，此处简单记住）相结合，例如补偿设备的开关操作减少、系统损耗减少、通过从初级电压调节 (PVR) 转向 SVR 最大限度地减少发电机控制工作，所有这些好处都极大地证明了 SA 中 V-WAR 应用的合理性。
Due to growing competition in the electricity market, the drive for efficient, stable and secure grid operation makes voltage control in the transmission grid relevant. A solution that has potential is to increase the effectiveness of the ancillary service by automatic fast control. The paper describes a Wide Area Voltage Regulation (V-WAR) that fits this framework. The V-WAR is based on Secondary and Tertiary Voltage Regulations (SVR; TVR). Currently ESKOM-TAP is investigating this kind of V-WAR for application in South Africa (SA). The V-WAR is a hierarchical closed-loop control system that operates beyond the conventional regulating and emergency control types by implementing innovative, timely and coordinated control of the main reactive power resources that are situated in the field. The proposed V-WAR is simple, has a control structure that is easy to implement and provides the means to achieve smart objectives that could never be attained without it. The SVR application is described, shown to have a robust selection of pilot nodes, control power stations and areas in the SA transmission grid. The control loop dynamics and characteristics of SVR are presented and significant objects achieved due to its effective functionality are highlighted. The noticeable improvement in voltage and angular stability and in saving grid operation at voltage closed to the maximum continuous value, are the main paper issues. Jointly to other relevant results (already presented at IEEE-PES GM2010 and here simply remembered) such as less switching maneuvers at compensating equipment, system loss reduction, minimization of the generator control effort by moving from Primary Voltage Regulation (PVR) to SVR, all these benefits significantly contribute to justify the V-WAR application in SA.