Network and Protection Security System for Predictive Blackout Avoidance in the Presence of a Competitive and CO2-Reduced Electrical Power Supply

电力系统的高可靠性是现代社区生产力和繁荣的基础。二氧化碳减排带来的电力系统变化、电能输送的增加和能源市场的竞争导致线路负荷的增加和网络结构的不断变化。网络达到了它们的物理和操作极限，变得越来越复杂。在不久的过去，许多电力供应的意外关闭都是由于保护系统的故障造成的。保护系统不能适应不断变化的网络条件和复杂的网络结构。传统的保护协调方法是针对局部有限问题的，不能满足上述意图。本研究工作的目标是为预测性大停电避免的网络和保护安全分析和评估提供新的方法。网络和保护系统应视为防止故障的一个整体。前提是网络和保护系统的整体系统方法。包括对区域电网乃至全国电网保护协调的分析和改进。根据对故障情景的例行检查，将识别和预防性地分析协调瓶颈。改进措施将通过算法自动计算或导出，因此，该研究项目将为在未来电力系统持续变化的情况下保持网络可靠性做出重要贡献。

A high level of reliability of power systems is basis for productivity and prosperity of modern communities. The changes of power systems driven by CO2-reduced generation, increase of electrical energy transport and competitive energy market lead to an increased line loading and ongoing changes of network structures. The networks reach their physical and operational limits and become more and more complex. Numerous unintentional shutdowns of power supply in the near past are caused by malfunctions of protection systems. The protection systems are not adapted to the changing network conditions and complex network structures. Conventional methods of protection coordination are dedicated for local limited problems and cannot comply with the intentions described above.The goal of this research work are new methods of analysis and assessment of network and protection security for a predictive blackout avoidance. Network and protection system should be considered as an integral unity preventing malfunctions. Prerequisite is an overall system approach of network and protection system. It comprises an analysis and improvement of protection coordination of regional up to nationwide power grids. Based on routinely checks of fault scenarios, bottlenecks of coordination will be identified and analyzed preventively. Measures of improvement will be automatically calculated or derived by algorithms.Thus the proposed research project will make an important contribution for the preservation of network reliability in the presence of ongoing changes of power systems in the future.